CN118376286A

CN118376286A - Pointer type measuring instrument and instrument checking method

Info

Publication number: CN118376286A
Application number: CN202410836008.5A
Authority: CN
Inventors: 赵士春
Original assignee: Beijing Const Instruments Technology Inc
Current assignee: Beijing Const Instruments Technology Inc
Priority date: 2024-06-26
Filing date: 2024-06-26
Publication date: 2024-07-23
Anticipated expiration: 2044-06-26
Also published as: CN118376286B

Abstract

The embodiment of the application provides a pointer type measuring instrument and an instrument verification method, comprising a dial plate; the rotating shaft is arranged at a first position of the dial plate; the first part of the pointer is connected with the rotating shaft; the driving module is used for driving the second part of the pointer and is arranged at the second position of the dial plate; the measuring sensor is used for measuring the physical quantity to be measured and generating a sensor signal; the processing module collects sensor signals from the measuring sensor, and controls the driving module according to the sensor signals so that the indication measured value of the pointer corresponds to the sensor signals. The technical scheme of the application can digitize the pointer, reduce the damage risk of the rotating shaft and improve the service life of the pointer type measuring instrument.

Description

Pointer type measuring instrument and instrument checking method

Technical Field

The application relates to the technical field of industrial measurement, in particular to a pointer type measuring instrument and an instrument verification method.

Background

Pointer type meters are widely used in industrial measurement scenes such as pressure measurement and temperature measurement.

Taking a pointer pressure gauge as an example, the pointer pressure gauge comprises a pressure sensing diaphragm, a force transmission mechanism, a rotating shaft and a pointer, wherein one end of the rotating shaft is connected with the output end of the force transmission mechanism, the other end of the rotating shaft is connected with the pointer, the pressure sensing diaphragm deforms according to the pressure to be measured in the measuring process, the force transmission mechanism converts the deformation into torque, and the pointer is driven to move through the rotating shaft, so that the indication of the pressure measurement value is realized.

When the physical quantity to be measured fluctuates or varies greatly, the pointer needs to move along with the variation of the physical quantity to be measured, the stress of the rotating shaft is increased, and the rotating shaft is easy to damage.

Disclosure of Invention

The embodiment of the application provides a pointer type measuring instrument and an instrument checking method, which can reduce the damage risk of a rotating shaft.

A first aspect of an embodiment of the present application provides a pointer type measuring instrument, including: a dial; the rotating shaft is arranged at a first position of the dial plate; the first part of the pointer is connected with the rotating shaft; the driving module is used for driving the second part of the pointer and is arranged at the second position of the dial plate; the measuring sensor is used for measuring the physical quantity to be measured and generating a sensor signal; the processing module collects sensor signals from the measuring sensor, and controls the driving module according to the sensor signals so that the indication measured value of the pointer corresponds to the sensor signals.

In some embodiments, the drive module includes a magnetic field generating portion for generating a magnetic field, the force being generated between the second portion of the pointer and the magnetic field to rotate the second portion of the pointer about the rotational axis.

In some embodiments, the first control period is determined according to a relative movement speed of the second portion of the pointer and the magnetic field generating portion, and the processing module is configured to control the magnetic field generating portion according to the first control period to change the acting force between the second portion of the pointer and the magnetic field.

In some embodiments, the magnetic field generating part includes a first generating unit; the processing module is configured to: at a first moment, if the position of the first generating unit is located between the current position of the pointer and the corresponding position of the sensor signal, controlling the first generating unit to generate a magnetic field for attracting the pointer; at a second moment, the first generating unit is controlled to generate a magnetic field for rejecting the pointer, and the second moment occurs after the first moment; between the first moment and the second moment, the second part of the pointer is driven by the magnetic field past the first generating unit.

In some embodiments, the magnetic field generating part includes a first generating unit and a second generating unit; the processing module is configured to: at a first moment, if the first generating unit is positioned between the current position of the pointer and the corresponding position of the sensor signal, the second generating unit is positioned between the first generating unit and the corresponding position of the sensor signal, and the first generating unit is controlled to generate a magnetic field for attracting the pointer; controlling the second generation unit to generate a magnetic field for attracting the pointer at a second moment, wherein the second moment occurs after the first moment; between the first moment and the second moment, the second part of the pointer is driven by the magnetic field past the first generating unit.

In some embodiments, the magnetic field generating part includes a first generating unit and a second generating unit; the processing module is configured to: at a second moment, if the current position of the pointer is located between the first generating unit and the second generating unit, the second generating unit is located between the current position of the pointer and the corresponding position of the sensor signal, and the first generating unit is controlled to generate a magnetic field for rejecting the pointer; at a third time, controlling the intensity of the magnetic field generated by the first generating unit to be reduced, or controlling the first generating unit to stop generating the magnetic field, wherein the third time occurs after the second time; between the second moment and the third moment, the second part of the pointer is driven by the magnetic field past the second generating unit.

In some embodiments, the magnetic field generating part includes a first generating unit and a second generating unit; if the corresponding position of the sensor signal is located between the first generating unit and the second generating unit, the current position of the pointer is located between the first generating unit and the second generating unit, and the processing module is configured to: controlling the first generating unit and the second generating unit to generate a magnetic field for attracting the pointer; or controlling the first generating unit and the second generating unit to generate a magnetic field which repels the pointer.

In some embodiments, the processing module is configured to: periodically collecting sensor signals from the measurement sensor; if the deviation between the corresponding positions of the pointer and the sensor signal is smaller than or equal to a set threshold value, the processing module is configured to control the magnetic field generating part according to a second control period; the second control period is greater than the acquisition period of the sensor signal.

In some embodiments, during the second control period, the processing module is configured to determine, based on the current position of the pointer and the sensor signal: if the deviation between the current position of the pointer and the sensor signal is smaller than or equal to the adjustment threshold value, keeping the current position of the pointer unchanged until the next second control period; and if the deviation between the current position of the pointer and the sensor signal is larger than the adjustment threshold value, controlling the magnetic field generating part according to the sensor signal.

In some embodiments, if the deviation between the corresponding positions of the pointer and the sensor signal is greater than a set threshold, the processing module is configured to control the magnetic field generating portion according to the first control period; the first control period is greater than the second control period; or the second control period is smaller than the first control period, and the first control period is larger than the acquisition period of the sensor signal.

In some embodiments, the processing module is configured to: calculating a signal change trend according to all sensor signals in the second control period; the magnetic field generating unit is controlled according to the signal change trend so that the pointer change trend is the same as the signal change trend.

In some embodiments, the magnetic field generating part includes at least two magnetic field generating units, the magnetic field generating units are disposed on indication scales of the dial plate, or the magnetic field generating units are disposed between two adjacent indication scales of the dial plate, so that at least one magnetic field generating unit is disposed in a range from one indication scale to the other indication scale of the dial plate.

In some embodiments, the dial comprises a first indication section provided with at least one indication scale, and a second indication section provided with at least one indication scale; the distribution density of the magnetic field generating units in the first indication interval is greater than the distribution density of the magnetic field generating units in the second indication interval.

In some embodiments, the measurement sensor includes a first sensing unit and a second sensing unit, and the processing module is configured to: acquiring a processing formula which is used for expressing the relation among the physical quantity to be measured, the first measurable physical quantity and the second measurable physical quantity; collecting a first measurement signal from a first sensing unit, the first measurement signal being indicative of a first measurable physical quantity; collecting a second measurement signal from the second sensing unit, the second measurement signal being indicative of a second measurable physical quantity; and processing the first measurement signal and the second measurement signal according to a processing formula, and controlling the driving module according to a processing result to enable the indication measured value to represent the physical quantity to be measured.

A second aspect of the embodiments of the present application provides an instrument verification method, configured to verify a pointer type measuring instrument of any one of the first aspects of the embodiments of the present application, where the pointer type measuring instrument includes a pointer, a driving module, a measuring sensor, and a processing module; the instrument verification method comprises the following steps: controlling the verification physical quantity to change according to the first trend until reaching a target verification value; the measurement sensor measures the verification physical quantity, and when the pointer meets the verification requirement, a first indication measurement value is obtained; the processing module controls the driving module to enable the pointer to change according to the first trend, then controls the driving module according to a sensor signal of the measuring sensor, and obtains a second indication measured value when the pointer meets the verification requirement; and verifying the pointer type measuring instrument according to the first indication measuring value and the second indication measuring value.

In the embodiment of the application, when the physical quantity to be measured changes, the measuring sensor measures the physical quantity to be measured and generates the sensor signal, the processing module controls the driving module according to the sensor signal, and the driving module drives the second part of the pointer to move around the rotating shaft, so that the indication measured value of the pointer corresponds to the sensor signal. The rotating center of the pointer is determined through the rotating shaft and the first part of the pointer, the movement of the pointer is controlled through the driving relation between the driving module and the second part of the pointer, and when the physical quantity to be measured fluctuates or changes greatly, the torque influence on the rotating shaft is reduced, the service life of the rotating shaft is prolonged, and the maintenance cost of the pointer type measuring instrument is reduced.

Drawings

Fig. 1 is a schematic connection diagram of a pointer type measuring instrument according to one embodiment of the present application.

FIG. 2 is a schematic diagram showing the connection of a pressure measuring instrument according to one embodiment of the present application.

Fig. 3 is a schematic diagram showing connection of a temperature measuring instrument according to one embodiment of the present application.

FIG. 4 is a schematic diagram of a process measurement instrument connection according to one embodiment of the present application.

Fig. 5 is a schematic connection diagram of a pointer type measuring instrument according to a second embodiment of the present application.

Fig. 6 is an illustration of a pointer type measuring instrument according to an embodiment of the present application at a first moment.

Fig. 7 is an illustration of a pointer type measuring instrument at a second moment in time according to an embodiment of the present application.

Fig. 8 is a diagram illustrating a pointer type measuring instrument at a third moment according to an embodiment of the present application.

Fig. 9 is a schematic diagram of one of the processes of the pointer type measuring instrument according to the embodiment of the application.

Fig. 10 is a schematic diagram of a second flow of the pointer type measuring instrument according to the embodiment of the application.

FIG. 11 is a schematic diagram illustrating a third flow of the pointer type measuring instrument according to the embodiment of the application.

Fig. 12 is a schematic diagram of a flow chart of a pointer type measuring instrument according to an embodiment of the application.

Fig. 13 is a schematic diagram of a flow chart of a pointer type measuring instrument according to an embodiment of the present application.

Fig. 14 is a flowchart of a meter verification method according to an embodiment of the application.

Fig. 15 is a schematic connection diagram of a pointer type measuring instrument according to a third embodiment of the present application.

Reference numerals:

100. The watch body, 110, dial, 111, first position (of dial), 112, second position (of dial), 113, indication mark location area, 120, rotation shaft, 121, first rotation shaft, 122, second rotation shaft, 130, pointer, 131, first portion (of pointer), 132, second portion (of pointer), 133, indication end (of pointer), 140, measurement sensor, 150, processing module, 200, driving module, 210, magnetic field generating portion, 211, first generating unit, 212, second generating unit, 221, driving track, 222, driving slide, 223, transmission bearing, 224, driving motor, 300, pressure joint, 310, pressure guiding tube, 320, pressure sensing unit, 410, thermocouple unit, 420, thermocouple signal measuring unit, 430, cold end temperature measuring unit, 440, temperature area to be measured, 510, signal connector, 520, process signal measuring unit, 530, signal source to be measured.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. For ease of description, the drawings in the specification accordingly simplify or omit components commonly used in the art, such as external connection lines and the like, which are not relevant to the description of embodiments of the present application. These omitted or simplified components do not affect the understanding of the embodiments of the present application by those skilled in the art.

The prior art has the problems that: the pointer pressure gauge comprises a pressure sensing diaphragm, a force transmission mechanism, a rotating shaft and a pointer, wherein one end of the rotating shaft is connected with the output end of the force transmission mechanism, the other end of the rotating shaft is connected with the pointer, the pressure sensing diaphragm deforms according to the pressure to be measured in the measuring process, the force transmission mechanism converts the deformation into torque, and the pointer is driven to move through the rotating shaft to realize the indication of pressure measurement values. In some cases, the pressure sensor is adopted to replace the pressure sensing diaphragm, the motor is adopted to replace the force transmission mechanism, in the measuring process, the pressure sensor measures the pressure to be measured to obtain a sensor signal, the motor is controlled according to the sensor signal, the motor drives the rotating shaft to rotate, and the indication of the pressure measurement value is realized. It can be understood that no matter what way is adopted to drive the rotating shaft, the torque for driving the pointer to move is provided by the rotating shaft, and as the indicating part of the pointer rotates around the rotating shaft and a certain distance exists between the indicating part of the pointer and the rotating shaft, the farther from the rotating shaft, the longer the moment arm to the rotating shaft is. In order to improve the accuracy of the meter, the shaft needs to be as thin as possible to reduce its impact on torque transmission. When the physical quantity to be measured fluctuates, the instantaneous torque of the rotating shaft and the instantaneous movement direction of the pointer may be opposite, and when the physical quantity to be measured obviously changes, the pointer needs to move at a faster speed to reach the corresponding indication position, and the two conditions may cause the rotating shaft to receive a larger torque, accelerate the aging of the rotating shaft and the connecting structure thereof, and even cause the damage of the rotating shaft and the connecting structure thereof.

The pointer type measuring instrument in the embodiment of the application is used for measuring industrial physical quantities, and specifically, the physical quantities to be measured of the pointer type measuring instrument comprise at least one of the industrial physical quantities such as pressure, temperature, humidity, flow, process signals and the like.

The indication measured value in the embodiment of the application means that an indication scale, an indication interval or other scale marks, colors, numbers, symbols, icons or other marks used for representing indication meanings of corresponding positions are arranged on a dial plate of the pointer type measuring instrument; based on the current position of the pointer in the dial plate, the current measurement result of the pointer type measuring instrument can be expressed by combining the mark on the dial plate, namely the indication measured value.

As shown in fig. 1, an embodiment of the present application provides a pointer type measuring instrument, including: dial 110; a rotating shaft 120, wherein the rotating shaft 120 is arranged at a first position 111 of the dial; a pointer 130, the first portion 131 of which is connected to the rotation shaft 120; a driving module 200 for driving the second portion 132 of the pointer, the driving module 200 being disposed at the second position 112 of the dial; a measurement sensor 140 for measuring a physical quantity to be measured, generating a sensor signal; the processing module 150, the processing module 150 collects sensor signals from the measurement sensor 140, and controls the driving module 200 according to the sensor signals so that the indication measured value of the pointer corresponds to the sensor signals. Since the driving module 200 is in an invisible state on the front face of the dial, the processing module 150 is located inside the watch body and is invisible on the front face of the dial, and is indicated by a broken line. The measurement sensor 140 may be provided outside the body, or may be provided in the body entirely or partially.

In some embodiments, the pointer type measuring instrument includes a meter body 100, a dial 110 is disposed on a first end surface of the meter body 100, and a processing module 150 is further disposed in the meter body 100, and the measuring sensor 140 is connected with the processing module 150, so that the processing module 150 can collect a sensor signal from the measuring sensor 140.

In some embodiments, as shown in fig. 2, the pointer type measuring instrument is a pressure instrument, a pressure connector 300 is disposed on a second end surface of the meter body, a pressure guiding tube 310 is disposed in the pressure connector 300, the measuring sensor 140 includes a pressure sensing unit 320, and a pressure sensing surface of the pressure sensing unit is connected with the pressure guiding tube 310, so that the pressure sensing unit can measure the pressure to be measured introduced by the pressure guiding tube 310, the pressure sensing unit 320 is connected with the processing module 150, and the processing module 150 can collect sensor signals from the pressure sensing unit 320. In the pressure measurement process, the pressure guiding pipe 310 is connected with the pressure to be measured. Since the pressure sensing unit 320 and the pressure introduction pipe 310 may be disposed inside the pressure joint 300, they are indicated by dotted lines.

In some embodiments, as shown in fig. 3, the pointer type measuring instrument is a temperature instrument, the measuring sensor 140 includes a thermocouple unit 410 (may also be a thermal resistor or other temperature measuring unit), the meter body 100 is provided with a thermocouple signal measuring unit 420 and a cold end temperature measuring unit 430, the thermocouple signal measuring unit 420 is connected with the thermocouple unit 430 through a thermocouple connection wire, the thermocouple connection wire is adapted to the thermocouple unit 430, the thermocouple signal measuring unit 420 is connected with the processing module 150, the cold end temperature measuring unit 430 is connected with the processing module 150, so that the processing module 150 can collect a sensor signal from the thermocouple unit 410 according to a measurement result of the thermocouple signal measuring unit 420; it will be appreciated that the thermocouple signal measurement unit 420, the cold end temperature measurement unit 430, and thermocouple wires may be all or part of the processing module 150, or all or part of the measurement sensor 140. During the temperature measurement, the measurement end of thermocouple element 410 is placed in temperature zone 440 to be measured.

In some embodiments, as shown in fig. 4, the pointer type measuring instrument is a process instrument, the measuring sensor 140 includes a signal connector 510, a meter body is provided with a process signal measuring unit 520, the process signal measuring unit 520 is connected with the signal connector 510, and the process signal measuring unit 520 is connected with the processing module 150, so that the processing module 150 can collect a sensor signal from the signal connector 510 according to a measurement result of the process signal measuring unit 520; it is understood that the process signal measurement unit 520 may be wholly or partially part of the processing module 150 or wholly or partially part of the measurement sensor 140. During process signal measurement, the signal connector 510 is connected to a signal source 530 to be measured.

In other embodiments, the pointer type measuring instrument may also be used for measuring other industrial physical quantities, which are not listed here.

The processing module 150 collects sensor signals from the measurement sensor 140. In some embodiments, the measurement sensor 140 periodically sends sensor signals to the processing module 150. In some embodiments, the processing module 150 collects sensor signals and processes the sensor signals according to the collected sensor signals, in some embodiments, the measurement sensor 140 provides sensor signals to the processing module 150 in the form of analog signals (voltage, current, or resistance), the processing module 150 measures the sensor signals to obtain signal values of the analog signals, and the collection of the sensor signals is implemented, and it is understood that there are many possible forms of sensor signal collection of the measurement sensor 140 by the processing module 150, which are not listed here.

In some embodiments, the pointer-type measuring instrument further includes a power module, which is disposed in the meter body 100, and the power module may be a built-in power source of the pointer-type measuring instrument, such as a battery, or a power distribution circuit connected with an external power source, and is connected with the processing module 150, and the processing module 150 is connected with the driving module 200, so that the processing module 150 may control the driving module 200, and the processing module 150 is connected with the measuring sensor 140, so that the processing module 150 may collect sensor signals from the measuring sensor 140.

In some embodiments, if the second portion 132 of the pointer is an energized conductor or electromagnet, the processing module 150 is coupled to the second portion 132 of the pointer such that the processing module 150 can control the power supplied to the second portion 132 of the pointer.

In some embodiments, the driving module 200 includes a plurality of driving units that operate independently of each other, and the processing module 150 may be respectively connected to the plurality of driving units, so that the processing module 150 may respectively control the plurality of driving units.

The rotating shaft 120 is connected to the first portion 131 of the pointer, so that the pointer 130 can perform a rotational movement with the rotating shaft 120 as a rotational center, preferably, the first portion 131 of the pointer is configured to rotate freely, in some embodiments, the first portion 131 of the pointer is movably connected to the rotating shaft 120, so that the first portion 131 of the pointer can rotate freely around the rotating shaft 120, in some embodiments, the rotating shaft 120 is movably connected to the watch body 100, so that the rotating shaft 120 can rotate freely around its own axis, in some embodiments, the rotating shaft 120 can include a first rotating shaft portion 121 and a second rotating shaft portion 122, the first rotating shaft portion 121 is fixedly connected to the watch body 100, the second rotating shaft portion 122 is fixedly connected to the pointer, and the first rotating shaft portion 121 is movably connected to the second rotating shaft portion 122. Preferably, the movable connection is a rolling connection or a sliding connection with as little friction as possible, so that the pointer 130 receives as little rotational moment as possible from the rotating shaft 120 when the pointer 130 performs a rotational movement about the rotating shaft 120.

The driving module 200 is configured to drive the second portion 132 of the pointer, where the first portion 131 of the pointer and the second portion 132 of the pointer correspond to different positions of the pointer, and since the rotating shaft 120 is connected to the first portion 131 of the pointer, the second portion 132 of the pointer is located between the first portion 131 (not including) of the pointer and the indicating end 133 (including) of the pointer, and the indicating end 133 of the pointer is configured to cooperate with an indication mark (such as an indication scale, an indication color, etc.) on the dial 110 to represent an indication measurement value, and in some embodiments, a projection of the indicating end 133 of the pointer 130 falls into the area 113 where the indication mark on the dial 110 is located. Preferably, the closer the second portion 132 of the pointer is to the indicating end 133 of the pointer, the better the driving effect in connection with the embodiment of the present application, so the second portion 132 of the pointer may include the indicating end 133 of the pointer, and the second portion 132 of the pointer may include a position near the indicating end 133 of the pointer.

The driving module 200 is disposed at the second position 112 of the dial, and the first position 111 of the dial, the rotation shaft 120, and the first portion 131 of the pointer are at the same projection position, and the second portion 132 of the pointer and the first portion 131 of the pointer are different positions on the pointer 130, so that the second position 112 of the dial is different from the first position 111 of the dial. In some embodiments, the trajectory of movement of the second portion 132 according to the pointer is identical or partially coincides with the second position 112 of the dial. Preferably, the second position 112 of the dial is identical or partially coincident with the area 113 of the dial 110 where the indication mark is located.

In some embodiments, the driving module 200 is connected to the second portion 132 of the pointer, such that the driving module 200 can drive the second portion 132 of the pointer to move, and the driving module 200 is at least partially exposed on the surface of the dial 110; in some embodiments, the driving module 200 drives the second portion 132 of the pointer by magnetic driving, electromagnetic driving or other non-contact method, preferably, there is no contact between the driving module 200 and the second portion 132 of the pointer, and a gap exists between the second portion 132 of the pointer and the dial 112, so that friction resistance caused by contact during movement of the pointer is reduced as much as possible, and at this time, the driving module 200 may be disposed inside the watch body 100 so as not to be visible on the outer surface of the dial.

In the embodiment of the application, when the pointer-type measuring instrument measures a physical quantity to be measured, the measuring sensor 140 measures the physical quantity to be measured to generate a sensor signal corresponding to the physical quantity to be measured, the processing module 150 collects the sensor signal from the measuring sensor 140 and determines a control target after processing, the control target corresponds to the physical quantity to be measured, the processing module 150 controls the driving module 200 to enable the driving module 200 to generate a driving force for the second part 132 of the pointer, the direction of the driving force corresponds to the control target, the pointer 130 starts to rotate, the rotating direction of the pointer 130 corresponds to the control target because the first part 131 of the pointer is connected with the rotating shaft 120, the processing module 150 continuously controls the driving module 200 according to the control target until the control target is reached, at this time, the relative position of the indicating end 133 of the pointer in the area where the indication mark is located can be used for indicating the indication measured value of the pointer-type measuring instrument, and the indication measured value corresponds to the physical quantity to be measured.

In the embodiment of the present application, when the physical quantity to be measured fluctuates, the current moving direction of the pointer may be opposite to the control target, and since the second portion 132 of the pointer is driven by the driving module 200, the receiving body that receives the instantaneously increased impact is the driving module 200, so that the moment influence on the first portion 131 of the pointer and the rotating shaft 120 is reduced, and when the physical quantity to be measured changes greatly, even if the pointer moves in an accelerating manner, the receiving body that receives the instantaneously increased impact due to the acceleration is also the driving module 200; preferably, the first pointer 131 is configured to rotate freely, so that the pointer 130 can convert the impulse force into rotational displacement as much as possible, thereby improving control efficiency and control efficiency, reducing the influence of abrupt change of the physical quantity to be measured on the rotating shaft 120, prolonging the service life of the rotating shaft 120, and reducing the damage risk of the rotating shaft 120.

In some embodiments, as shown in fig. 5, the pointer type measuring instrument further includes: the driving module 200 includes a magnetic field generating portion 210, where the magnetic field generating portion 210 is configured to generate a magnetic field, and an acting force is generated between the second portion 132 of the pointer and the magnetic field, so that the second portion 132 of the pointer rotates around the rotation axis 120. In the embodiment of the present application, the magnetic field generating unit 210 has a plurality of parts, and the processing module 150 is connected to each part of the magnetic field generating unit 210, and the magnetic field generating unit 210 is not visible on the dial face, so that it is indicated by a dotted line, and the processing module 150 and the measuring sensor 140 are not visible on the dial face, so that it is indicated by a dotted line.

The magnetic field generating unit 210 may be an electromagnet or other electromagnetic generating device, and in the energized state, the magnetic field generating unit 210 may generate a magnetic field, preferably, in the de-energized state, the magnetic field generating unit 210 may stop generating a magnetic field, preferably, the processing module 150 is configured to control the current intensity of the magnetic field generating unit 210, thereby controlling the magnetic field intensity generated by the magnetic field generating unit 210, preferably, the processing module 150 is configured to control the current direction of the magnetic field generating unit 210, thereby controlling the magnetic field direction generated by the magnetic field generating unit 210.

The second portion 132 of the pointer includes at least one of a conductive conductor, a permanent magnet, and an electromagnet, which is adapted to the magnetic field generating portion 210, so that the second portion 132 of the pointer can also generate a magnetic field, thereby generating a force between the second portion 132 of the pointer and the magnetic field generating portion 210 through the magnetic field.

In some embodiments, the processing module 150 determines the target position of the pointer 130 to be P1 according to the sensor signal, and the magnetic field generating portion 210 is disposed between the target position P1 of the pointer and the pointer 130, and the processing module 150 controls the magnetic field generating portion 210 according to the sensor signal so that the magnetic field direction of the second portion 132 of the pointer is the same as the magnetic field direction of the magnetic field generating portion 210, at this time, the second portion 132 of the pointer is attracted by the magnetic field generating portion 210 and moves toward the magnetic field generating portion 210, and since the magnetic field generating portion 210 is between the pointer 130 and the target position P1 of the pointer, the pointer 130 moves toward the target position P1 of the pointer.

In some embodiments, the processing module 150 determines the target position of the pointer 130 to be P2 according to the sensor signal, the pointer 130 is located between the target position P2 of the pointer and the magnetic field generating portion 210, the processing module 150 controls the magnetic field generating portion 210 according to the sensor signal to make the magnetic field direction of the second portion 131 of the pointer opposite to the magnetic field direction of the magnetic field generating portion 210, at this time, the second portion 132 of the pointer is repelled by the magnetic field generating portion 210 and moves opposite to the magnetic field generating portion 210, and since the magnetic field generating portion 210 and the target position P2 of the pointer are located at two sides of the pointer 130, respectively, the pointer 130 moves towards the target position P2 of the pointer.

In the embodiment of the application, when the mechanical connection is used for driving, the loss of moment (torque) in the mechanical transmission process is required to be compensated, and when the physical quantity to be measured fluctuates, the larger the loss caused by the mechanical transmission is, the larger the required compensation quantity is, and the larger the influence on the accuracy degree of the pointer type measuring instrument is. In the embodiment of the application, the magnetic field generating part 210 is fixed with the dial 110, and in the measuring process, the magnetic field generating part 210 drives the second part 132 of the pointer through the magnetic field, so that the driving module 200 can control the pointer 130 to move in a contactless manner, compared with mechanical transmission, the torque loss in the transmission process can be reduced, and the accuracy of the pointer type measuring instrument is improved.

In some embodiments, the pointer-type meter further comprises: the first control period is determined according to the relative movement speed of the second portion 132 of the pointer and the magnetic field generating portion 210, and the processing module 150 is configured to control the magnetic field generating portion 210 according to the first control period so that the acting force between the second portion 132 of the pointer and the magnetic field changes.

Preferably, the processing module 150 may control the magnetic field generating part 210 in at least one of the following ways: the processing module 150 can control different parts of the magnetic field generating part 210 in different manners according to the sensor signals; the processing module 150 may control a part of the magnetic field generating part 210 to change from a state of generating the magnetic field to a state of stopping generating the magnetic field according to the sensor signal; the processing module 150 may control a portion of the magnetic field generating part 210 to change from a state of stopping generating the magnetic field to a state of generating the magnetic field according to the sensor signal; the processing module 150 may control the current intensity of a portion of the magnetic field generating part 210 to be changed according to the sensor signal, thereby adjusting the magnetic field intensity generated by the magnetic field generating part 210; the processing module may control the current direction of a portion of the magnetic field generating unit 210 to be changed according to the sensor signal, thereby adjusting the magnetic field direction generated by the magnetic field generating unit 210. It will be appreciated that some, if not all, of the solutions of the respective art are feasible and practical.

The processing module 150 periodically controls the magnetic field generating section 210. Preferably, the processing module 150 controls the magnetic field generating section 210 according to the first control period. Preferably, the processing module 150 may preset a specific value of the first control period, or preset a parameter that may calculate the first control period, thereby determining the first control period.

In some embodiments, the first control period is determined based on the relative speed of movement of the second portion 132 of the pointer and the magnetic field generating portion 210. When the distribution of the magnetic field generating unit 210 has been determined, the greater the relative movement speed of the second part 132 of the pointer and the magnetic field generating unit 210, the smaller the time interval of the first control period, the smaller the relative movement speed of the second part 132 of the pointer and the magnetic field generating unit 210, and the greater the time interval of the first control period. Preferably, if the pointer 130 has not reached the corresponding position of the sensor signal, the pointer 130 is in a rotating state, and the processing module 150 periodically controls the magnetic field generating unit 210 according to the first control period, so that the second portion 132 of the pointer is located at one side of the specific portion of the magnetic field generating unit 210 in the nth period, and the second portion 132 of the pointer is located at the other side of the specific portion of the magnetic field generating unit 210 in the n+1th period.

In the embodiment of the present application, the first control period is determined according to the relative movement speed of the second portion 132 of the pointer and the magnetic field generating portion 210, so that: if the moving speed of the pointer 130 increases, the time interval of the first control period becomes shorter, the control frequency of the processing module 150 to the magnetic field generating unit 210 increases, the driving accuracy of the magnetic field generating unit 210 to the second portion 132 of the pointer increases, and the driving efficiency of the magnetic field generating unit 210 to the second portion 132 of the pointer increases; when the moving speed of the pointer 130 decreases, the time interval of the first control period increases, the control frequency of the processing module 150 to the magnetic field generating unit 210 decreases, and the influence of the magnetic field change of the magnetic field generating unit 210 on the fluctuation of the second portion 132 of the pointer decreases, thereby increasing the driving efficiency of the magnetic field generating unit 210 to the second portion 132 of the pointer.

In some embodiments, the pointer-type meter further comprises: the magnetic field generating part includes a first generating unit 211; the processing module 150 is configured to: at the first moment, if the position of the first generating unit 211 is located between the current position of the pointer 130 and the corresponding position of the sensor signal, controlling the first generating unit 211 to generate a magnetic field for attracting the pointer 130; at a second time instant, which occurs after the first time instant, the first generation unit 211 is controlled to generate a magnetic field that repels the pointer 130; between the first moment and the second moment, the second part 132 of the pointer is driven by the magnetic field past the first generating unit 211.

In some embodiments, as shown in fig. 6, 7 and 9, the pointer type measuring instrument may include:

S110, at the first moment, the processing module 150 controls the first generating unit 211 to generate the magnetic field that attracts the pointer 130. At the first moment, there is a deviation between the pointer 130 and the corresponding position of the sensor signal, and the processing module 150 controls the first generating unit 211 to generate a magnetic field that attracts the second portion 132 of the pointer, so that the pointer 130 moves towards the first generating unit 211, and since the position of the first generating unit 211 is located between the second portion 132 of the pointer and the corresponding position of the sensor signal, the pointer 130 also moves towards the corresponding position of the sensor signal.

S120, between the first time and the second time, the second portion 132 of the pointer is driven by the magnetic field through the first generating unit 211. Between the first time and the second time, the movement inertia of the pointer 130 may be used, or the magnetic fields of other generating units in the magnetic field generating part may be used, and the pointer 130 maintains the current movement direction, i.e. the direction towards the corresponding position of the sensor signal, and since the position of the first generating unit 211 is located between the second part 132 of the pointer and the corresponding position of the sensor signal, the second part 132 of the pointer passes through the first generating unit 211 during the movement of the pointer.

S130, at a second moment, the processing module 150 controls the first generating unit 211 to generate a magnetic field for rejecting the pointer. At the second moment, there is a deviation between the pointer 130 and the corresponding position of the sensor signal, and the processing module 150 controls the first generating unit 211 to generate a magnetic field that repels the second portion 132 of the pointer, so that the pointer 130 moves away from the direction of the first generating unit 211, and since the second portion 132 of the pointer passes the first generating unit 211, i.e. the second portion 132 of the pointer is located between the first generating unit 211 and the corresponding position of the sensor signal, the pointer 130 continues to move towards the corresponding position of the sensor signal. In some embodiments, the action at the second moment may be started after the second portion 132 of the pointer passes through the first generating unit 211. In some embodiments, if the processing module 150 controls the first generating unit according to the first control period in the foregoing embodiments, the first time and the second time are respectively different times of the first control period, and preferably, a time interval between the first time and the second time is (a time interval of) one or more first control periods.

In the embodiments of fig. 6, 7 and 8, the processing module 150 and the measuring sensor 140 are not visible on the dial face, and are indicated by broken lines, and the first generating unit 211 and the second generating unit 212 are not visible on the dial face, and are indicated by broken lines, and the relationship between the first generating unit 211, the second generating unit 212 and the second portion 132 of the pointer is mainly described in the embodiments of fig. 6, 7 and 8, so that the connection between the processing module 150 and the other portion of the magnetic field generating unit 210 is omitted.

In some embodiments, the second portion 132 of the pointer includes an energizing conductor or an electromagnet, and in the process of S110, the processing module 150 controls the first generating unit 211 to generate a magnetic field in a first magnetic field direction, the processing module 150 controls the energizing of the second portion 132 of the pointer, and supplies power to the second portion 132 of the pointer according to the first current direction, so that the magnetic field direction of the second portion 132 of the pointer is the same as the first magnetic field direction; in some embodiments, in the process of S130, the processing module 150 controls the first generating unit 211 to generate a magnetic field with a second magnetic field direction, the first magnetic field direction is opposite to the second magnetic field direction, the processing module 150 controls the power on of the second portion 132 of the pointer, and supplies power to the second portion 132 of the pointer according to the first current direction, so that the magnetic field direction of the second portion 132 of the pointer is opposite to the second magnetic field direction; in some embodiments, in the process of S130, the processing module 150 controls the first generating unit 211 to generate the magnetic field in the first magnetic field direction, the processing module 150 controls the power on of the second portion 132 of the pointer, and supplies power to the second portion 132 of the pointer according to the second current direction, and the first current direction is opposite to the second current direction, so that the magnetic field direction of the second portion 132 of the pointer is opposite to the second magnetic field direction.

In some embodiments, the second portion 132 of the pointer includes a permanent magnet, and the processing module 150 controls the first generating unit 211 to generate a magnetic field in a first magnetic field direction in the process of S110, so that the magnetic field direction of the second portion 132 of the pointer is the same as the first magnetic field direction, and controls the first generating unit 211 to generate a magnetic field in a second magnetic field direction opposite to the first magnetic field direction in the process of S130, so that the magnetic field direction of the second portion 132 of the pointer is opposite to the second magnetic field direction.

In the embodiment of the present application, when the pointer moves from the current position to the corresponding position of the sensor signal, if the first generating unit 211 is located on the movement path, the first generating unit 211 may control the movement of the pointer through the magnetic field attractive force first, and then control the movement of the pointer through the magnetic field repulsive force, and compared with the case of a single acting force direction (for example, only the attractive force exists between the magnetic field of the first generating unit and the second portion of the pointer), the first generating unit 211 may drive the pointer in a larger range, so as to increase the moving speed of the pointer when being driven, and when the physical quantity to be measured changes greatly, the pointer may reach the corresponding position of the sensor signal in a shorter time, so as to increase the measuring speed of the pointer type measuring instrument.

In the embodiment of the present application, the first generating unit 211 is controlled through the first control period, and since the relative movement speed of the pointer 130 and the magnetic field generating unit 210 is determined according to the first control period, the processing module 150 can determine the first moment and the second moment through the first control period, without additionally acquiring the actual movement position of the pointer, so that the cost of the pointer type measuring instrument can be reduced.

In some embodiments, the pointer-type meter further comprises: the magnetic field generating section 210 includes a first generating unit 211 and a second generating unit 212; the processing module 150 is configured to: at the first moment, if the first generating unit 211 is located between the current position of the pointer 130 and the corresponding position of the sensor signal, the second generating unit 212 is located between the first generating unit 211 and the corresponding position of the sensor signal, and controls the first generating unit 211 to generate a magnetic field for attracting the pointer 130; at a second time, which occurs after the first time, the second generation unit 212 is controlled to generate a magnetic field that attracts the pointer 130; between the first moment and the second moment, the second part 132 of the pointer is driven by the magnetic field past the first generating unit 211.

In some embodiments, as shown in fig. 6, 7 and 10, the pointer type measuring instrument may include:

S210, at the first moment, the processing module 150 controls the first generating unit 211 to generate the magnetic field that attracts the pointer 130. At the first moment, there is a deviation between the corresponding positions of the pointer 130 and the sensor signal, where the interval corresponding to the deviation includes the first generating unit 211 and the second generating unit 212, where the first generating unit 211 is closer to the pointer second portion 132 than the second generating unit 212, and at this time, the processing module 150 controls the first generating unit 211 to generate a magnetic field that attracts the pointer second portion 132, so that the pointer moves toward the first generating unit 211, and since the position of the first generating unit 211 is located between the pointer second portion 132 and the corresponding position of the sensor signal, the pointer 130 also moves toward the corresponding position of the sensor signal.

S220, between the first time and the second time, the second portion 132 of the pointer is driven by the magnetic field through the first generating unit 211. Between the first time and the second time, the movement inertia of the pointer 130 may be used, or the magnetic field of one or more of the first generating unit 211, the second generating unit 212, and the other generating units in the magnetic field generating unit 210 may be used, so that the pointer 130 maintains the current movement direction, i.e., the direction toward the corresponding position of the sensor signal, and since the position of the first generating unit 211 is located between the second portion 132 of the pointer and the corresponding position of the sensor signal, the second portion 132 of the pointer passes through the first generating unit 211 during the movement of the pointer.

At the second moment S230, the processing module 150 controls the second generating unit 212 to generate the magnetic field that attracts the pointer 130. At the second moment, there is a deviation between the pointer 130 and the corresponding position of the sensor signal, where the interval corresponding to the deviation includes the second generating unit 212, and the processing module 150 controls the second generating unit 212 to generate a magnetic field that attracts the second portion 132 of the pointer, so that the pointer moves in the direction of the second generating unit 212, compared to the first moment, outside the interval corresponding to the deviation, and since the position of the second generating unit 212 is located between the second portion 132 of the pointer and the corresponding position of the sensor signal, the pointer 130 also moves in the direction of the corresponding position of the sensor signal.

In the embodiment of the present application, the pointer-type measuring instrument provides a technical scheme of performing "relay" control on the second portion 132 of the pointer through at least two magnetic field generating units (211, 212), when at least two magnetic field generating units exist between the pointer 130 and the corresponding position of the sensor signal, the pointer 130 is driven through the first generating unit 211 closest to the pointer 130 in the at least two magnetic field generating units until the relative position between the pointer 130 and the magnetic field generating unit 210 changes, the first generating unit 211 is not between the pointer 130 and the corresponding position of the sensor signal, and then the pointer 130 is driven through the second generating unit 212 closest to the pointer 130 in the at least two magnetic field generating units, and so on, thereby driving the pointer 130 to the corresponding position of the sensor signal.

In the embodiment of the application, the farther the distance between the magnetic field generating units (211, 212) and the second part 132 of the pointer is, the smaller the driving force of the magnetic field generating units (211, 212) to the second part 132 of the pointer is, the slower the driving speed is, compared with the driving of the magnetic field generating units located at the corresponding positions of the sensor signals to the second part 132 of the pointer, the driving acting force of the magnetic field generating units 210 and the second part 132 of the pointer can be improved, and further the moving speed of the pointer when the pointer is driven can be improved, and when the physical quantity to be measured is changed greatly, the pointer can reach the corresponding positions of the sensor signals in a shorter time, and the measuring speed of the pointer type measuring instrument is improved.

In some embodiments, the first moments of S110 and S210 are the same, the S110 and S210 may be implemented in cooperation, the S120 and S220 correspond to the second moments of S130 and S230, and the S130 and S230 may be implemented in cooperation, in cooperation with the embodiments, the pointer type meter provides at least two magnetic field generating units to drive the second portion 132 of the pointer, in movement of the pointer 130, the second portion 132 of the pointer is subjected to a suction force applied by the at least one magnetic field generating unit through the magnetic field, and at the same time, the second portion 132 of the pointer is also subjected to a repulsive force applied by the at least one magnetic field generating unit through the magnetic field, and the suction force is the same as the driving direction of the repulsive force applied to the second portion 132 of the pointer, after the relative position between the pointer 130 and the magnetic field generating unit 210 is changed, the magnetic field generating state of the magnetic field generating unit 210 may be adjusted, so that one or more of the at least two magnetic field generating units closer to the second portion 132 of the pointer is driven.

In some embodiments, the pointer-type meter further comprises: the magnetic field generating section 210 includes a first generating unit 211 and a second generating unit 212; the processing module 150 is configured to: at the second moment, if the current position of the pointer 130 is located between the first generating unit 211 and the second generating unit 212, the second generating unit 212 is located between the current position of the pointer 130 and the corresponding position of the sensor signal, and controls the first generating unit 211 to generate a magnetic field that repels the pointer 130; at a third time, the magnetic field intensity generated by the first generating unit 211 is controlled to decrease, or the first generating unit 211 is controlled to stop generating the magnetic field, the third time occurs after the second time; between the second time and the third time, the second portion 132 of the pointer is driven by the magnetic field past the second generation unit 212.

In some embodiments, as shown in fig. 7, 8 and 11, the pointer type measuring instrument may include:

At S310, at the second moment, the processing module 150 controls the first generating unit 211 to generate a magnetic field that repels the pointer 130. At the second moment, there is a deviation between the pointer 130 and the corresponding position of the sensor signal, where the interval corresponding to the deviation includes the second generating unit 212, and the pointer 130 is located between the first generating unit 211 and the second generating unit 212, at this time, the processing module 150 controls the first generating unit 211 to generate the magnetic field that repels the second portion 132 of the pointer, so that the pointer moves away from the direction of the first generating unit 211, that is, the pointer 130 moves toward the corresponding position of the sensor signal.

Between S320 and the second time and the third time, the second portion 132 of the pointer is driven by the magnetic field through the second generation unit 212. Between the second time and the third time, the movement inertia of the pointer 130 may be used, or the magnetic field of one or more of the first generating unit 211, the second generating unit 212, and the other generating units in the magnetic field generating unit 210 may be used, so that the pointer 130 maintains the current movement direction, i.e., the direction toward the corresponding position of the sensor signal, and since the position of the second generating unit 212 is located between the second portion 132 of the pointer and the corresponding position of the sensor signal, the second portion 132 of the pointer passes through the second generating unit 212 during the movement of the pointer.

At the third time, the processing module 150 controls the magnetic field strength generated by the first generating unit 211 to decrease, or the processing module 150 controls the first generating unit 211 to stop generating the magnetic field. At the third moment, the second generating unit 212 is located between the first generating unit 211 and the second portion 132 of the pointer, and at this time, the processing module 150 may reduce the current passing through the first generating unit 211, so that the magnetic field strength generated by the first generating unit 211 is reduced. It is understood that stopping the energization of the first generating unit 211 may be regarded as the decrease of the current intensity through the first generating unit 211 to zero, and correspondingly, stopping the generation of the magnetic field by the first generating unit 211 may be regarded as the decrease of the magnetic field intensity generated by the first generating unit 211 to zero.

In the embodiment of the application, the pointer 130 rotates around the rotating shaft 120, the second portion 132 of the pointer rotates around the first portion 131 of the pointer, and the magnetic field interference of the first generating unit 211 to the position of the second portion 132 of the pointer can be reduced by controlling the magnetic field intensity generated by the first generating unit 211 to be reduced, so that the control efficiency and the control accuracy of other magnetic field generating units of the magnetic field generating unit 210 to the second portion 132 of the pointer are improved, and the measurement efficiency and the measurement accuracy of the pointer type measuring instrument are further improved.

In some embodiments, S310 is the same as the second time in S130, and S310 and S130 may be implemented cooperatively; in some embodiments, S310 is the same as the second time in S230, and S310 and S230 may be implemented cooperatively; in some embodiments, as shown in fig. 6, 7, 8 and 12, S310, S130 are the same as the second time in S230, and S310, S130 are implemented in cooperation with S230. In the process of the matching embodiment, the pointer-type measuring instrument provides a control scheme of the magnetic field generating part 210 in a relay manner, when a deviation exists between the corresponding positions of the pointer 130 and the sensor signal, the area corresponding to the deviation comprises at least one magnetic field generating unit, the first generating unit 211 closest to the pointer 130 in the at least one magnetic field generating unit is determined, the first generating unit 211 is controlled to generate a magnetic field attracted by the pointer second part 132, the pointer 130 passes through the first generating unit 211 between the first moment and the second moment, the pointer 130 is positioned between the first generating unit 211 and the second generating unit 212, the first generating unit 211 is controlled to generate a magnetic field which is repulsive to the second part 132 of the pointer, the pointer 130 passes through the second generating unit 212 between the second moment and the third moment, and the magnetic field intensity of the first generating unit 211 is controlled to be reduced at the third moment; further, if the deviation between the corresponding positions of the pointer 130 and the sensor signal is determined at the second moment, it may be determined that the region corresponding to the deviation includes at least one magnetic field generating unit, and it may be further determined that the second generating unit 212 closest to the pointer 130 among the at least one magnetic field generating unit is the second generating unit 212, and the second moment controls the second generating unit 212 to generate the magnetic field attracted to the second portion 132 of the pointer, it may be understood that, from the second moment, the second generating unit 212 may be controlled with reference to the first generating unit 211 at the first moment.

In the embodiment of the present application, by performing the relay control as described above on at least one magnetic field generating unit in the magnetic field generating unit 210, the control efficiency of the magnetic field generating unit 210 on the second portion 132 of the pointer can be improved, and the moving rate of the pointer 130 when driven can be improved, so that when the physical quantity to be measured changes, the pointer 130 can be moved to the position corresponding to the indication measurement value of the physical quantity to be measured as soon as possible, and the measurement efficiency of the pointer type measuring instrument can be improved.

In the embodiment of the present application, when the first control period is used to control the first generating unit 211, since the relative movement speed of the pointer 130 and the magnetic field generating unit 210 is determined according to the first control period, the processing module 150 can determine the first time, the second time and the third time through the first control period, without additionally obtaining the actual movement position of the pointer, so that the cost of the pointer type measuring instrument can be reduced.

In some embodiments, the pointer-type meter further comprises: the magnetic field generating section 210 includes a first generating unit 211 and a second generating unit 212; if the corresponding position of the sensor signal is located between the first generating unit 211 and the second generating unit 212, the current position of the pointer 130 is located between the first generating unit 211 and the second generating unit 212, and the processing module 150 is configured to: controlling the first generation unit 211 and the second generation unit 212 to generate a magnetic field that attracts the pointer 130; or controls the first generation unit 211 and the second generation unit 212 to generate a magnetic field that repels the pointer 130.

In some embodiments, if the current position of the pointer 130 and the corresponding position of the sensor signal are located between the first generating unit 211 and the second generating unit 212, the deviation between the corresponding positions of the pointer 130 and the sensor signal is smaller than the distance between the first generating unit 211 and the second generating unit 212, and the processing module 150 may selectively adopt one of the following control schemes: in another example, the first generating unit 211 is controlled to generate the magnetic field that attracts the second portion 132 of the pointer, while the second generating unit 212 is controlled to generate the magnetic field that attracts the second portion 132 of the pointer, and in yet another example, the first generating unit 211 is controlled to generate the magnetic field that repels the second portion 132 of the pointer, while the second generating unit 212 is controlled to generate the magnetic field that repels the second portion 132 of the pointer.

In some embodiments, if the magnetic field strength of the first generating unit 211 is the first magnetic field strength when determining the first moment, when controlling the first generating unit 211 and the second generating unit 212 to generate the magnetic field for attracting the pointer 130, the magnetic field strength of the first generating unit 211 is the second magnetic field strength, and the second magnetic field strength is smaller than the first magnetic field strength; in some embodiments, if the magnetic field strength of the first generating unit 211 is the first magnetic field strength when determining the second moment, when controlling the first generating unit 211 and the second generating unit 212 to generate the magnetic field that repels the pointer 130, the magnetic field strength of the first generating unit 211 is the second magnetic field strength, and the second magnetic field strength is smaller than the first magnetic field strength; in some embodiments, if the intensity of the current flowing through the second portion 132 of the pointer is the first intensity of the current when determining the first moment, when controlling the first generating unit 211 and the second generating unit 212 to generate the magnetic field for attracting the pointer 130, the intensity of the current flowing through the second portion 132 of the pointer is the second intensity of the current, and the second intensity of the current is smaller than the first intensity of the current; in some embodiments, if the intensity of the current flowing through the second portion 132 of the pointer is the first intensity of the current when determining the second moment, the intensity of the current flowing through the second portion 132 of the pointer is the second intensity of the current when controlling the first generating unit 211 and the second generating unit 212 to generate the magnetic field that repels the pointer 130, and the second intensity of the current is smaller than the first intensity of the current.

In some embodiments, the first generating unit 211 is controlled to generate the magnetic field that attracts the second portion 132 of the pointer, and at the same time, the second generating unit 212 is controlled to generate the magnetic field that attracts the second portion 132 of the pointer, at this time, by adjusting the magnetic field strength of the first generating unit 211 or the magnetic field strength of the second generating unit 212, the position of the pointer 130 may be adjusted between the first generating unit 211 and the second generating unit 212, for example, the magnetic field strength of the first generating unit 211 may be increased, or the magnetic field strength of the second generating unit 212 may be decreased, the pointer 130 may be moved in a direction approaching the first generating unit 211, and for example, the magnetic field strength of the first generating unit 211 may be decreased, or the magnetic field strength of the second generating unit 212 may be increased, and the pointer 130 may be moved in a direction approaching the second generating unit 212.

In some embodiments, the first generating unit 211 is controlled to generate the magnetic field that repels the second portion 132 of the pointer, and the second generating unit 212 is controlled to generate the magnetic field that repels the second portion 132 of the pointer, at this time, by adjusting the magnetic field strength of the first generating unit 211 or the magnetic field strength of the second generating unit 212, the position of the pointer 130 may be adjusted between the first generating unit 211 and the second generating unit 212, for example, the magnetic field strength of the first generating unit 211 may be increased, or the magnetic field strength of the second generating unit 212 may be decreased, the pointer 130 may be moved in a direction approaching the second generating unit 212, and for example, the magnetic field strength of the first generating unit 211 may be decreased, or the magnetic field strength of the second generating unit 212 may be increased, and the pointer 130 may be moved in a direction approaching the first generating unit 211.

In the embodiment of the present application, the pointer 130 can be stabilized at the corresponding position of the sensor signal by the magnetic fields of the first generating unit 211 and the second generating unit 212, and meanwhile, when the sensor signal fluctuates, the position of the pointer 130 can be efficiently adjusted by adjusting the magnetic field of at least one of the first generating unit 211 and the second generating unit 212, so that the measurement accuracy of the pointer type measuring instrument is improved.

In the embodiment of the present application, the first generating unit 211 is controlled to generate the magnetic field of the second portion 132 of the rejection pointer, and at the same time, the second generating unit 212 is controlled to generate the magnetic field of the second portion 132 of the rejection pointer; the state of the pointer 130 is a steady state when it is determined that no impact force in the field environment is received; if there is an impact force on the pointer type measuring instrument in the field environment, on the one hand, when the impact force reaches the pointer 130, the pointer 130 can overcome the influence of the magnetic field to do work, the impact force is consumed and buffered by the magnetic field, so as to reduce the damage risk of the impact force to the pointer 130 and the rotating shaft 120, on the other hand, when the magnetic field strength of the first generating unit 211 and the second generating unit 212 is unchanged, if the impact force causes the pointer 130 to move in a certain direction, for example, the first generating unit 211, when the energy consumption of the impact force is finished, the distance between the first generating unit 211 and the second part 132 of the pointer is smaller than that in the steady state, the received repulsive force is larger, the received repulsive force between the second generating unit 212 and the second part 132 of the pointer is larger than that in the steady state, so as to drive the pointer 130 to move towards the second generating unit 212 until the steady state is restored.

In some embodiments, the pointer-type meter further comprises: the processing module 150 is configured to: periodically collecting sensor signals from the measurement sensor 140; if the deviation between the corresponding positions of the pointer and the sensor signal is smaller than or equal to a set threshold value, the processing module is configured to control the magnetic field generation part according to a second control period; the second control period is greater than the acquisition period of the sensor signal.

The processing module 150 is configured to control the magnetic field generating unit 210 with the second control period when the indication measurement value reaches the expected range, and in the embodiment of the present application, if the deviation between the current position of the pointer and the corresponding position of the sensor signal is smaller than the set threshold value, it may be considered that the indication measurement value reaches the expected range.

In some embodiments, a set threshold is input to the processing module 150 according to the fluctuation degree of the physical quantity to be measured, so that the set threshold is smaller than or equal to the maximum fluctuation value of the physical quantity to be measured; in some embodiments, the set threshold is determined according to the accuracy required by the physical quantity to be measured, so that the set threshold is less than or equal to the maximum allowable error of the physical quantity to be measured.

In the embodiment of the application, since the second control period is greater than the acquisition period of the sensor signals, each second control period can have at least one sensor signal corresponding to the period, so that the indication measured value is adjusted, and the measurement accuracy of the pointer type measuring instrument in the second control period is improved.

In some embodiments, the pointer-type meter further comprises: in the second control period, the processing module 150 is configured to determine, according to the current position of the pointer 130 and the sensor signal: if the deviation between the current position of the pointer 130 and the sensor signal is smaller than or equal to the adjustment threshold, keeping the current position of the pointer 130 unchanged until the next second control period; if the deviation between the current position of the pointer 130 and the sensor signal is greater than the adjustment threshold, the magnetic field generating unit 210 is controlled based on the sensor signal.

In some embodiments, the adjustment threshold may be input to the processing module 150 according to the fluctuation degree of the physical quantity to be measured, so that the adjustment threshold is smaller than or equal to the maximum fluctuation value of the physical quantity to be measured, and in some embodiments, the adjustment threshold may be determined according to the accuracy degree required by the physical quantity to be measured, so that the adjustment threshold is smaller than or equal to the maximum allowable error of the physical quantity to be measured; in some embodiments, the threshold is adjusted to a predetermined parameter; in some embodiments, the adjustment threshold is less than the set threshold.

In some embodiments, the processing module 150 may determine the current position of the pointer 130 based on the last control instruction to the magnetic field generating section 210.

In the embodiment of the application, the physical quantity to be measured can be measured in two dimensions of the fluctuation frequency and the fluctuation amplitude by setting the threshold and adjusting the threshold, so that under the condition that the actual condition of the physical quantity to be measured is not determined, the physical quantity to be measured with smaller fluctuation amplitude and smaller fluctuation frequency can be accurately and statically expressed, and the physical quantity to be measured with larger fluctuation amplitude and larger fluctuation frequency can be accurately and dynamically expressed, thereby improving the measurement accuracy of the pointer type measuring instrument. For example, if the fluctuation range of the physical quantity to be measured is smaller than or equal to the adjustment threshold, the magnetic field generating unit 210 is controlled according to the second control period, so that the indication measured value of the pointer type measuring instrument is refreshed according to the second control period, and the physical quantity to be measured can be measured more accurately; if the fluctuation range of the physical quantity to be measured is greater than the adjustment threshold and less than or equal to the set threshold, and the fluctuation frequency of the physical quantity to be measured is less than the second control period, the magnetic field generating part 210 can be controlled according to the actual sensor signal when the fluctuation degree of the physical quantity to be measured exceeds the adjustment threshold, so that not only the static measurement result, but also the fluctuation condition of the physical quantity to be measured can be expressed; if the fluctuation range of the physical quantity to be measured is greater than the adjustment threshold and less than or equal to the set threshold, and the fluctuation frequency of the physical quantity to be measured is greater than or equal to the second control period, the magnetic field generating unit 210 may be controlled according to the second control period, and when the fluctuation range of the physical quantity to be measured exceeds the adjustment threshold, the magnetic field generating unit 210 may be controlled according to the actual sensor signal, so that not only the static measurement result but also the fluctuation condition of the physical quantity to be measured may be expressed.

In some embodiments, the pointer-type meter further comprises: if the deviation between the corresponding positions of the pointer 130 and the sensor signal is greater than the set threshold, the processing module 150 is configured to control the magnetic field generating part 210 according to the first control period; the first control period is greater than the second control period; or the second control period is smaller than the first control period, and the first control period is larger than the acquisition period of the sensor signal.

In some embodiments, the processing module 150 is configured to determine according to the current position of the pointer 130 and the corresponding position of the sensor signal, if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is greater than the set threshold, the processing module 150 is configured to control the magnetic field generating portion 210 according to the first control period, and if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is less than or equal to the set threshold, the processing module 150 is configured to control the magnetic field generating portion 210 according to the second control period.

In some embodiments, the first control period is greater than the acquisition period of the sensor signal.

In some embodiments, the required moving speed of the pointer 130 may be determined according to the current position of the pointer 130 and the corresponding position of the sensor signal, the magnetic field strength of the magnetic field generating unit 210 is controlled according to the required moving speed of the pointer 130, for example, if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is greater than the acceleration threshold, the processing module 150 is configured to control the magnetic field strength generated by the first generating unit 211 to be the third magnetic field strength, so that the magnetic field force of the second portion 132 of the pointer is applied by the first generating unit 211 to be the third force, and if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is less than or equal to the acceleration threshold, the processing module 150 is configured to control the magnetic field strength generated by the first generating unit 211 to be the fourth magnetic field strength, so that the magnetic field force of the second portion 132 of the pointer is applied by the first generating unit 211 to be the fourth force, where the third force is greater than the fourth force, and the third magnetic field strength is greater than the fourth magnetic field strength. In some embodiments, the acceleration threshold is greater than the set threshold in the previous embodiments.

In some embodiments, the first control period is greater than the second control period. In the embodiment of the present application, when the physical quantity to be measured continuously changes, if the change of the physical quantity to be measured is gradual and the change degree of unit time is small, the processing module 150 controls the magnetic field generating portion 210 according to the first control period, so that the second portion 132 of the pointer can be driven by the magnetic field generating unit in the foregoing embodiment in a "relay" manner, and the moving process of the pointer 130 is smooth and does not get stuck.

In some embodiments, the first control period is less than the first control period, and the first control period is greater than the acquisition period of the sensor signal. In the embodiment of the present application, when the physical quantity to be measured is suddenly changed, for example, the change height of the physical quantity to be measured per unit time is relatively large, the processing module 150 controls the magnetic field generating portion 210 according to the first control period, so as to increase the moving speed of the second portion 132 of the pointer, shorten the time for the pointer 130 to reach the corresponding position of the sensor signal, and increase the measurement efficiency of the pointer type measuring instrument.

In the embodiment of the present application, as shown in fig. 13, the processing module 150 may acquire a set threshold, an adjustment threshold, a first control period and a second control period, in the measurement process, S410, the processing module 150 periodically acquires a sensor signal from the measurement sensor 140, determines according to the current position of the pointer 130 and the corresponding position of the sensor signal, S420, if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is greater than the set threshold, the processing module 150 periodically controls the magnetic field generating portion 210 according to the first control period, so that the pointer 130 approaches the corresponding position of the sensor signal, S430, if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is less than or equal to the set threshold, the processing module 150 periodically controls the magnetic field generating portion 210 according to the second control period, S440, and if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is less than or equal to the adjustment threshold, continues to perform sensor signal acquisition until the next second control period, S450, and if the deviation between the current position of the pointer 130 and the corresponding position of the sensor signal is greater than the adjustment threshold, then recalculates control period. By setting the threshold, adjusting the threshold, the first control period and the second control period in the embodiment of the application, the control strategy of the processing module 150 on the magnetic field generating part 210 can be adaptively adjusted according to the change conditions of different physical quantities to be measured, so that the conditions of different physical quantities to be measured such as gradual change of the physical quantities to be measured, abrupt change of the physical quantities to be measured and fluctuation of the physical quantities to be measured can be met, and the measurement accuracy of the pointer type measuring instrument is improved under the condition that the actual performance of the physical quantities to be measured cannot be determined in advance.

In some embodiments, the pointer-type meter further comprises: the processing module 150 is configured to: calculating a signal change trend according to all sensor signals in the second control period; the magnetic field generating unit 210 is controlled according to the signal change trend so that the pointer 130 has the same change trend as the signal change trend.

In some embodiments, the acquisition of the sensor signal is performed at least twice during the second control period; further, the second control period is greater than or equal to two times of the acquisition period of the sensor signal, so that at least two acquisitions of the sensor signal can be performed in each second control period.

In some embodiments, the processing module 150 periodically collects sensor signals from the measurement sensor 140, if a trigger condition for controlling the magnetic field generating unit 210 is not satisfied, the processing module 150 stores corresponding data of the sensor signals in the temporary storage area, and when the trigger condition for controlling the magnetic field generating unit 210 is satisfied, the processing module 150 extracts corresponding data of all sensor signals from the temporary storage area, and deletes the extracted data in the temporary storage area; the triggering conditions for controlling the magnetic field generating unit 210 in the embodiment of the present application include at least one of the following: entering a new second control period; the deviation between the current position of the pointer and the sensor signal is greater than the adjustment threshold.

In some embodiments, the processing module 150 calculates a signal variation trend according to all the sensor signals (at least two) in the second control period, and by way of example, the processing module 150 calculates a signal variation curve according to all the sensor signals in the second control period, determines whether the current sensor signal falls within a coverage area of the signal variation curve, if the current sensor signal falls within the coverage area of the signal variation curve, controls the magnetic field generating unit 210 according to a corresponding value of the signal variation curve, and if the current sensor signal exceeds the coverage area of the signal variation curve, controls the magnetic field generating unit 210 according to the current sensor signal.

In the embodiment of the application, when the physical quantity to be measured changes very slowly, for example, the physical quantity to be measured corresponds to a switch meter or a safety meter, the processing module 150 calculates a signal change trend according to all sensor signals in the second control period, and controls the magnetic field generating part 210 according to the signal change trend, so that even if the physical quantity to be measured fluctuates, the aforesaid very slow change can be clearly represented by the signal change trend, and compared with the change of the physical quantity to be measured represented by transient, the very slow change process of the physical quantity to be measured can be more accurately represented, and the measurement accuracy of the pointer type measuring meter is improved.

In some embodiments, the pointer-type meter further comprises: the magnetic field generating part 210 includes at least two magnetic field generating units disposed on the indication scale of the dial 110 or disposed between two adjacent indication scales of the dial 110 such that at least one magnetic field generating unit is disposed in a range from one indication scale to the other indication scale of the dial.

In some embodiments, the pointer-type meter further comprises: the dial 110 includes a first indication section provided with at least one indication scale, and a second indication section provided with at least one indication scale; the distribution density of the magnetic field generating units in the first indication interval is greater than the distribution density of the magnetic field generating units in the second indication interval.

In some embodiments, the dial is provided with a scale mark, and according to the difference of the thickness degree, the distinguishing grade and the like of the scale mark, the scale mark may include a main scale mark, a sub-scale mark and a more subdivided scale mark (if any), in some embodiments, the indication scale is the main scale mark, in some embodiments, the indication scale is a combination of the main scale mark and the sub-scale mark, in some embodiments, the indication scale is a combination of the main scale mark, the sub-scale mark and the more subdivided scale mark.

In some embodiments, the magnetic field generating unit may include the first generating unit 211 and the second generating unit 212 in the foregoing embodiments, and may further include other magnetic field generating units in the magnetic field generating part 210. The magnetic field generating unit may be correspondingly disposed on the indication scales, and the magnetic field generating unit may also be disposed between two adjacent indication scales, where the magnetic field generating unit may also be disposed on the indication scales, and between the indication scales, where it is understood that in the embodiment of the present application, the magnetic field generating unit may be disposed on the surface of the dial, or may be disposed at a position corresponding to the dial in the watch body 100, for example, where the magnetic field generating unit is disposed in the watch body 100 and corresponds to a certain indication scale, and also where the magnetic field generating unit is disposed on the indication scale.

In some embodiments, the range from one indication scale to another indication scale of the dial plate includes the boundary of the range, that is, the one indication scale and the other indication scale.

In some embodiments, the magnetic field generating units are configured to be evenly distributed within the corresponding space provided with the indication scale; in some embodiments, the magnetic field generating unit is configured to be unevenly distributed within the corresponding space of the indication scale; further, the physical quantity to be measured may be expected, and the first physical quantity range and the second physical quantity range may be determined according to the expected situation, where the probability that the physical quantity to be measured falls within the first physical quantity range is greater than the probability that the physical quantity to be measured falls within the second physical quantity range, the indication section corresponding to the first physical quantity range is determined as a first indication section, the indication section corresponding to the second physical quantity range is determined as a second indication section, the distribution density of the magnetic field generating units in the first indication section is greater than the distribution density of the magnetic field generating units in the second indication section, for example, the magnetic field generating units are disposed only on each indication scale, within the first indication section, the magnetic field generating units are disposed not only on each indication scale, but also between adjacent indication scales.

In the embodiment of the application, by setting the magnetic field generating unit, the second part 132 of the pointer can obtain the driving control of the magnetic field generating unit just arranged at the corresponding position based on the corresponding position of the sensor signal, the second part 132 of the pointer can also obtain the driving control of the magnetic field generating units at two sides of the corresponding position, and the distance between the corresponding position of the magnetic field generating unit and the corresponding position of the sensor signal is smaller than the distance between two adjacent indication scales, so that when the second part 132 of the pointer is driven by the magnetic field of the magnetic field generating part 210, the magnetic field of the magnetic field generating unit close enough to the second part 132 of the pointer can be always obtained, thereby improving the measuring speed and accuracy of the pointer type measuring instrument.

In the embodiment of the application, by setting the magnetic field generating units, compared with the second indication interval, when the pointer 130 moves in the first indication interval, the magnetic field control of the closer magnetic field generating units can be obtained, or the magnetic field control of more magnetic field generating units can be obtained, so that the control efficiency and the control accuracy are improved, and the measurement efficiency and the measurement accuracy of the pointer type measuring instrument are further improved.

In some embodiments, the pointer-type meter further comprises: the measurement sensor 140 comprises a first sensing unit 141 and a second sensing unit 142, the processing module 150 being configured to: acquiring a processing formula which is used for expressing the relation among the physical quantity to be measured, the first measurable physical quantity and the second measurable physical quantity; collecting a first measurement signal from a first sensing unit, the first measurement signal being indicative of a first measurable physical quantity; collecting a second measurement signal from the second sensing unit, the second measurement signal being indicative of a second measurable physical quantity; and processing the first measurement signal and the second measurement signal according to a processing formula, and controlling the driving module according to a processing result to enable the indication measured value to represent the physical quantity to be measured.

In some embodiments, the physical quantity to be measured is difficult to measure, for example, the physical quantity to be measured is a flow, and for example, the physical quantity to be measured is a field physical quantity, for such physical quantity to be measured, the physical quantity to be measured may be decomposed into at least two measurable physical quantities, where the at least two measurable physical quantities include a first measurable physical quantity and a second measurable physical quantity; the measurement sensor 140 includes at least two measurement sensing units, where the at least two measurement sensing units include a first sensing unit 141 and a second sensing unit 142, where the first sensing unit 141 is configured to measure a first measurable physical quantity, and the second sensing unit 142 is configured to measure a second measurable physical quantity; in the measurement process, the first sensing unit 141 is connected to the first measurable physical quantity, so that the first sensing unit 141 measures the first measurable physical quantity, the second sensing unit 142 is connected to the second measurable physical quantity, the second sensing unit 142 measures the second measurable physical quantity, the processing module 150 is respectively connected to the first sensing unit 141 and the second sensing unit 142, the processing module 150 collects the first measurement signal from the first sensing unit 141, and the second measurement signal from the second sensing unit 142; the processing module 150 presets a processing formula, where the processing formula may include a correspondence between the physical quantity to be measured, the first measurable physical quantity, and the second measurable physical quantity, and the processing formula may be in a functional form, a table form, or other forms capable of expressing the correspondence; the processing module 150 substitutes the first measurement signal and the second measurement signal into a processing formula to perform processing calculation, so as to obtain a calculation result, and the processing formula represents a corresponding relation between the physical quantity to be measured and the measurable physical quantity, so that the calculation result can be used to represent the physical quantity to be measured, the driving module 200 is controlled according to the calculation result, the driving module 200 drives the pointer 130 until the position indicated by the pointer 130 corresponds to the calculation result, and the position indicated by the pointer 130 can also represent the physical quantity to be measured because the calculation result represents the physical quantity to be measured.

It should be understood that in the embodiment of the present application, the first measurable physical quantity may be one or more, the second measurable physical quantity may be one or more, the first measurable physical quantity and the second measurable physical quantity are used to represent at least two measurable physical quantities, the first measurable physical quantity and the second measurable physical quantity are different in at least one index of a physical quantity type, a measurement location, a measurement object, etc., and accordingly, the first measurable physical quantity and the second measurable physical quantity are used to represent at least two measurable physical quantities, and correspondingly, the first sensing unit 141 may also be one or more, the number of the first sensing units 141 is not less than the number of the first measurable physical quantities, the second sensing unit 142 may also be one or more, the number of the second sensing units 142 is not less than the number of the second measurable physical quantities, and the first sensing unit 141 and the second sensing unit 142 are used to represent at least two measurement sensing units.

In some embodiments, the processing module 150 is configured to periodically acquire a first measurement signal from the first sensing unit 141, periodically acquire a second measurement signal from the second sensing unit 142, and the acquisition period of the first measurement signal is the same as the acquisition period of the second measurement signal, further, the first measurement signal and the second measurement signal are acquired synchronously; in some embodiments, the processing module 150 is configured to periodically acquire the first measurement signal from the first sensing unit 141, periodically acquire the second measurement signal from the second sensing unit 142, and the acquisition period of the first measurement signal is less than the acquisition period of the second measurement signal.

In the embodiment of the application, the physical quantity to be measured is decomposed into the first measurable physical quantity and the second measurable physical quantity, and the first sensing unit 141 and the second sensing unit 142 are configured in the pointer type measuring instrument correspondingly.

As shown in fig. 14, the embodiment of the present application further provides a method for checking a pointer type measuring instrument according to the embodiment of the present application, where the pointer type measuring instrument includes a pointer 130, a driving module 200, a measuring sensor 140 and a processing module 150, and the specific structure and working scheme of the pointer type measuring instrument may refer to the foregoing description of the embodiment of the present application and are not repeated herein,

In some embodiments, the foregoing meter verification method may include:

S510, controlling the verification physical quantity to change according to the first trend until the target verification value is reached. By way of example, the measurement sensor 140 is connected to a calibration physical quantity such that the measurement sensor 140 can measure the calibration physical quantity, which belongs to the same type of physical quantity as the physical quantity to be measured, with a higher accuracy than the pointer meter, so that the pointer meter can be calibrated using the calibration physical quantity. For example, at least one target calibration value is determined according to the calibration requirements of the pointer-type measuring instrument, preferably, the target calibration value includes at least one value of a physical quantity that needs to be calibrated to be reached by the change of the physical quantity, for example, if the physical quantity is pressure, the target calibration value includes at least one value other than atmospheric pressure, and for example, if the physical quantity is temperature, the target calibration value includes at least one value different from the ambient temperature. For example, the calibration physical quantity is controlled according to the target calibration value, so that the calibration physical quantity changes from the current value to the target calibration value, in this process, the change direction of the calibration physical quantity is the first trend, for example, the calibration physical quantity is pressure, the target calibration value is a value higher than the atmospheric pressure, the first trend changes to be a boost, for example, the calibration physical quantity is temperature, the target calibration value is a value lower than the ambient temperature, and the first trend changes to be a decrease; it is understood that in the first trend change, the physical quantity is checked to maintain the consistency of the change direction, for example, the first trend change is to boost, so that no voltage reduction occurs during the boosting process, and for example, the first trend change is to cool, so that no temperature rise occurs during the cooling process. In some embodiments, when the verification physical quantity reaches the target verification value after the first trend change, the verification requirement on the target verification value is satisfied, and the next step S520 may be performed.

S520, the measuring sensor 140 measures the checking physical quantity, and when the pointer 130 reaches the checking requirement, a first indication measured value is obtained. For example, the measurement sensor 140 measures the calibration physical quantity to generate a sensor signal, the processing module 150 collects the sensor signal, and controls the driving module 150 according to the sensor signal, so that the driving module 150 drives the second portion 132 of the pointer, and the second portion 132 of the pointer is driven by the driving module 150, thereby driving the pointer 130 to rotate around the first portion 131 of the pointer until the pointer 130 reaches a corresponding position of the sensor signal. For example, according to the corresponding calibration specification or calibration rule, there may be a certain requirement on the stability or fluctuation of the pointer 130, for example, when the pointer 130 reaches the indication position, it may take a certain time to wait for reading, and for example, when the fluctuation range of the pointer 130 is smaller than a certain range, it may take reading. For example, when the pointer 130 meets the verification requirement, the indication measurement value of the pointer-type measuring instrument may be read to obtain a first indication measurement value, where the first indication measurement value corresponds to the first trend and the target verification value, and it may be understood that the higher the actual accuracy of the pointer-type measuring instrument, the closer the first indication measurement value is to the target verification value. In some embodiments, after the reading of the first indication measurement is completed, the next step S530 may be entered.

S530, the processing module 150 controls the driving module 200 to enable the pointer 130 to change according to the first trend, then controls the driving module 200 according to the sensor signal of the measuring sensor 140, and obtains a second indication measured value when the pointer 130 reaches the verification requirement. Illustratively, a calibration command is issued to the pointer-type meter, where the calibration command may include information about the first trend, and the processing module 150 obtains the calibration command and determines the first trend according to the calibration command. Illustratively, a check command is issued to the pointer-type measuring instrument, the check command instructs the processing module 150 to control the pointer 130 according to the previous trend, the processing module 150 obtains the check command, and accordingly searches the information of the latest control driving module 200 for changing the pointer 130, so as to determine the first trend. Illustratively, according to the verification instruction, the processing module 150 does not temporarily follow the sensing signal, but controls the driving module 200 according to the information of the first trend, and the driving module 200 drives the second portion 132 of the pointer to change the pointer 130 according to the first trend, and the change amplitude or change time of this process may be preset, so that after the change, there is a deviation between the position of the pointer 130 and the sensor signal, and the pointer 130 needs to be changed opposite to the first trend to reach the corresponding position of the sensor signal. Illustratively, the processing module 150, after controlling the driving module 200 to cause the pointer 130 to change according to the first trend, re-follows the sensor signal to control the driving module 200 and thus the pointer 130, and specifically, the processing module 150 controls the driving module 200 according to the sensor signal, drives the second portion 130 of the pointer to rotate in a direction opposite to the first trend through the driving module 200, and the second portion 132 of the pointer rotates around the first portion 131 of the pointer until the pointer 130 reaches the corresponding position of the sensor signal. For example, when the pointer 130 reaches the verification requirement, the indication measurement value of the pointer type measuring instrument may be read to obtain a second indication measurement value, where the verification requirement is generally the same as the verification requirement in S520. In some embodiments, the check physical quantity in S530 remains unchanged at the target check value.

S540, checking the pointer type measuring instrument according to the first indication measuring value and the second indication measuring value. In some embodiments, S540 occurs after S530, and S540 may be performed, for example, immediately after S530 is completed, or data processing may be performed after each target check value is read to complete the indication measurement value. For example, calculating a deviation between the first indication measured value and the target verification value, the deviation being used for evaluation, when the physical quantity to be measured changes according to the first trend, the measurement accuracy of the pointer-type measuring instrument; calculating the deviation between the second indication measured value and the target check value, wherein the deviation is used for evaluation, and when the physical quantity to be measured changes according to the second trend, the measurement accuracy of the pointer type measuring instrument is improved; and judging according to the deviation between the first indication measured value and the target check value and the deviation between the second indication measured value and the target check value, and measuring the accuracy degree of the pointer type measuring instrument when the physical quantity to be measured changes or fluctuates.

The embodiment of the application provides a calibration method of a pointer type measuring instrument, which can reduce the change process of the physical quantity different from the first trend and the stabilization process after the change process, shorten the calibration time and improve the calibration efficiency.

As shown in fig. 15, the embodiment of the present application also provides an implementation of the driving module 200. The driving module 200 includes a driving track 221, a driving slider 222, and a transmission bearing 223, where the driving track 221 corresponds to the motion track of the second portion 132 of the pointer, and the driving slider 222 is disposed on the driving track 221. The driving rail 221 may be driven by the driving motor 224 to move, the driving rail 221 is provided with a driving belt or a driving tooth, and the driving rail 221 is in driving connection with the driving slider 222 through the driving belt or the driving tooth, so that the driving slider 222 is driven to move through the movement of the driving rail 221, and after the driving rail 221 is powered on, an interaction force is generated between the driving rail 221 and the driving slider 222 through a magnetic field. The driving slider 222 is fixedly connected with the transmission bearing 223, so that when the driving slider 222 moves along the driving track 221, the driving slider 222 drives the transmission bearing 223 to move. One end of the transmission bearing 223 is fixedly connected with the driving slide block 222, the transmission bearing 223 is connected with the second part 132 of the pointer, and the second part 132 of the pointer and the transmission bearing 223 can rotate relatively, so that when the transmission bearing 223 moves along with the driving slide block 222, the second part 132 of the pointer moves along with the transmission bearing 223, and meanwhile, the transmission bearing 223 can be adjusted according to the relative position of the second part 132 of the pointer and the driving slide block 222. In the embodiment of the present application, the processing module 150 collects the sensor signal from the measurement sensor 140, and controls the position of the driving slider 222 on the driving track 221 according to the sensor signal, so as to drive the second portion 132 of the pointer to move, so that the second portion 132 of the pointer rotates around the first portion 131 of the pointer until the pointer 130 reaches the corresponding position of the sensor signal. It will be appreciated that there may be other ways of driving the second portion 132 of the pointer by the driving module 200, which are not illustrated here.

Certain features, structures, or characteristics of one or more embodiments of the application may be combined as suitable. The embodiments of the present application are used for illustrating the technical scheme, and should not be construed as limiting the same. Although a few exemplary embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this application. Accordingly, all such modifications are intended to be included within the scope of this application, as modifications to the disclosed embodiment or embodiments are intended to be included within the scope of this application.

Claims

1. A pointer-type measuring instrument, characterized by comprising:

A dial;

The rotating shaft is arranged at a first position of the dial plate;

The first part of the pointer is connected with the rotating shaft;

The driving module is used for driving the second part of the pointer, and the driving module is arranged at the second position of the dial plate;

The measuring sensor is used for measuring the physical quantity to be measured and generating a sensor signal;

The processing module is used for acquiring the sensor signals from the measuring sensor, controlling the driving module according to the sensor signals and enabling the indication measured value of the pointer to correspond to the sensor signals.

2. The pointer-type measuring instrument of claim 1, wherein the drive module comprises a magnetic field generating portion for generating a magnetic field, the force being generated between the second portion of the pointer and the magnetic field to rotate the second portion of the pointer about the rotational axis.

3. The pointer-type measuring instrument of claim 2, wherein a first control period is determined based on a relative movement speed of the second portion of the pointer and the magnetic field generating portion, the processing module being configured to control the magnetic field generating portion to vary a force between the second portion of the pointer and the magnetic field based on the first control period.

4. A pointer-type measuring instrument according to claim 2 or 3, wherein the magnetic field generating section includes a first generating unit; the processing module is configured to:

At a first moment, if the position of the first generating unit is located between the current position of the pointer and the corresponding position of the sensor signal, controlling the first generating unit to generate a magnetic field for attracting the pointer;

controlling the first generating unit to generate a magnetic field that repels the pointer at a second time, the second time occurring after the first time;

between the first moment and the second moment, the second part of the pointer is driven by a magnetic field past the first generating unit.

5. A pointer-type measuring instrument according to claim 2 or3, wherein the magnetic field generating section includes a first generating unit and a second generating unit; the processing module is configured to:

At a first moment, if the first generating unit is located between the current position of the pointer and the corresponding position of the sensor signal, the second generating unit is located between the first generating unit and the corresponding position of the sensor signal, and the first generating unit is controlled to generate a magnetic field for attracting the pointer;

Controlling the second generation unit to generate a magnetic field attracting the pointer at a second time, the second time occurring after the first time;

6. A pointer-type measuring instrument according to claim 2 or3, wherein the magnetic field generating section includes a first generating unit and a second generating unit; the processing module is configured to:

At a second moment, if the current position of the pointer is located between the first generating unit and the second generating unit, the second generating unit is located between the current position of the pointer and the corresponding position of the sensor signal, and the first generating unit is controlled to generate a magnetic field which repels the pointer;

Controlling the magnetic field intensity generated by the first generating unit to be reduced or controlling the first generating unit to stop generating the magnetic field at a third moment, wherein the third moment occurs after the second moment;

between the second moment and the third moment, a second portion of the pointer is driven by a magnetic field past the second generation unit.

7. A pointer-type measuring instrument according to claim 2 or 3, wherein the magnetic field generating section includes a first generating unit and a second generating unit;

If the corresponding position of the sensor signal is located between the first generation unit and the second generation unit, the current position of the pointer is located between the first generation unit and the second generation unit, and the processing module is configured to:

Controlling the first generating unit and the second generating unit to generate a magnetic field for attracting the pointer; or controlling the first generating unit and the second generating unit to generate a magnetic field which repels the pointer.

8. A pointer meter as claimed in claim 2 or claim 3, wherein the processing module is configured to:

periodically acquiring the sensor signal from the measurement sensor;

if the deviation between the corresponding positions of the pointer and the sensor signal is smaller than or equal to a set threshold value, the processing module is configured to control the magnetic field generating part according to a second control period;

the second control period is greater than the acquisition period of the sensor signal.

9. The pointer-type meter of claim 8, wherein during the second control period, the processing module is configured to determine from the current position of the pointer and the sensor signal:

if the deviation between the current position of the pointer and the sensor signal is smaller than or equal to an adjustment threshold value, keeping the current position of the pointer unchanged until the next second control period;

and if the deviation between the current position of the pointer and the sensor signal is larger than the adjustment threshold value, controlling the magnetic field generating part according to the sensor signal.

10. The pointer-type meter of claim 8, wherein if the deviation between the pointer and the corresponding position of the sensor signal is greater than a set threshold, the processing module is configured to control the magnetic field generation section according to a first control period;

The first control period is greater than the second control period; or the second control period is smaller than the first control period, and the first control period is larger than the acquisition period of the sensor signal.

11. The pointer-type meter of claim 8, wherein the processing module is configured to:

calculating a signal change trend according to all the sensor signals in the second control period;

And controlling the magnetic field generating part according to the signal change trend so that the change trend of the pointer is the same as the signal change trend.

12. A pointer-type measuring instrument according to claim 2,3, 9, 10 or 11, characterized in that the magnetic field generating section comprises at least two magnetic field generating units, which are arranged on the indication scale of the dial plate or between two adjacent indication scales of the dial plate, such that at least one of the magnetic field generating units is arranged in a range from one indication scale to the other indication scale of the dial plate.

13. The pointer-type measuring instrument according to claim 12, wherein the dial plate comprises a first indication section provided with at least one indication scale, and a second indication section provided with at least one indication scale; the distribution density of the magnetic field generating units in the first indication section is greater than the distribution density of the magnetic field generating units in the second indication section.

14. The pointer-type meter of claim 2,3, 9, 10, 11, or 13, wherein the measurement sensor comprises a first sensing unit and a second sensing unit, and the processing module is configured to:

Acquiring a processing formula, wherein the processing formula is used for expressing the relation among the physical quantity to be measured, the first measurable physical quantity and the second measurable physical quantity;

Collecting a first measurement signal from the first sensing unit, the first measurement signal being indicative of the first measurable physical quantity;

Collecting a second measurement signal from the second sensing unit, the second measurement signal being indicative of the second measurable physical quantity;

And processing the first measurement signal and the second measurement signal according to the processing formula, and controlling the driving module according to a processing result to enable the indication measured value to represent the physical quantity to be measured.

15. An instrument verification method, which is characterized by being used for verifying the pointer type measuring instrument of any one of claims 1 to 14, wherein the pointer type measuring instrument comprises a pointer, a driving module, a measuring sensor and a processing module; the instrument verification method comprises the following steps:

controlling the verification physical quantity to change according to the first trend until reaching a target verification value;

the measuring sensor measures the checking physical quantity, and when the pointer meets the checking requirement, a first indication measured value is obtained;

the processing module controls the driving module to enable the pointer to change according to a first trend, then controls the driving module according to a sensor signal of the measuring sensor, and obtains a second indication measured value when the pointer meets a verification requirement;

and verifying the pointer type measuring instrument according to the first indicating measured value and the second indicating measured value.