CN111486917A - Metering data reading device for counting character wheel and intelligent gas meter - Google Patents
Metering data reading device for counting character wheel and intelligent gas meter Download PDFInfo
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- CN111486917A CN111486917A CN202010400225.1A CN202010400225A CN111486917A CN 111486917 A CN111486917 A CN 111486917A CN 202010400225 A CN202010400225 A CN 202010400225A CN 111486917 A CN111486917 A CN 111486917A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/065—Indicating or recording devices with transmission devices, e.g. mechanical
- G01F15/066—Indicating or recording devices with transmission devices, e.g. mechanical involving magnetic transmission devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/068—Indicating or recording devices with electrical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
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Abstract
The invention discloses a metering data reading device for counting a digit wheel and an intelligent gas meter, comprising: the character wheel set comprises a number wheel and a steering piece in transmission connection with the number wheel through a transmission part, and the plane of the reciprocating motion track of the steering piece is not coplanar with the rotating plane of the number wheel; the steering piece is provided with a magnet which reciprocates along with the reciprocating motion of the steering piece; the magnetic induction device is arranged corresponding to the steering piece and is electrically connected to the circuit board; the magnetic induction device is used for inducing the change of the magnetic field and outputting counting pulses to the circuit board when the magnet moves to a position close to the magnetic induction device. This kind of mode of realizing count digit wheel electronic counting through setting up the piece that turns to that reciprocating motion orbit and count digit wheel rotation plane are not coplane, makes magnet and magnetic induction system's mounted position no longer receive the restriction of count digit wheel mounted position and direction of rotation, can reduce because of the limited problem that causes of mounting space magnetic induction system impaired and then influence the accuracy of electronic metering result.
Description
Technical Field
The invention relates to the technical field of gas meters, in particular to a metering data reading device for a counting digit wheel and an intelligent gas meter.
Background
The mechanical gas meter is used for metering the natural gas consumption of a user, and the counting principle is that the flow of the gas drives a counting number wheel to rotate for counting. To realize automatic meter reading, the rotation of the number counting wheel needs to be converted into an electric signal.
In the prior art, magnetic materials are mostly arranged on a counting wheel, and electronic pulse counting is carried out outside through a reed switch. For example, the chinese patent publication No. CN109489754A discloses an internet of things membrane gas meter, which includes a membrane box and a counting box, wherein the counting box is fixed on the membrane box; the film type box body is internally provided with an organic core assembly; the counting assembly, the communication module, the circuit board and the display are arranged in the counting box body, the display displays corresponding numerical values or codes according to instructions of the circuit board, and the communication module is used for receiving signals of the circuit board or the background server; the machine core assembly is connected with the counting assembly through the magnetic transmission assembly, the counting assembly comprises a counter, a gear transmission assembly, a first reed switch and a second reed switch, a magnet is arranged on a first digit wheel of the counter from right to left, the first reed switch and the second reed switch are arranged on the upper side and the lower side of the digit wheel with the magnet, and the first reed switch and the second reed switch are electrically connected with the circuit board. When the magnet rotates to the sensing position along with the digit wheel, the switch of the reed switch is closed, and when the magnet leaves the sensing position along with the rotation of the digit wheel, the switch of the reed switch is opened, the gas consumption indicated by the digit wheel on the gas meter is converted into an electric signal through the opening and closing of the reed switch, and the corresponding numerical value or code is displayed on the display.
However, two reed pipes of the gas meter need to be welded on the upper side and the lower side of a digit wheel with a magnet, the welding operation is inconvenient, particularly when the reed pipes below the digit wheel are welded, the welding operation is limited by the space structure of a counting box body, the space range of the welding operation is narrow, the vacuum glass pipe of the reed pipes is easy to leak in the welding process, the micro-leakage is difficult to find, and the problem that the metering is inaccurate after a period of time is caused by the fact that the character wheel counting device using the micro-leakage reed pipes and the intelligent gas meter.
Disclosure of Invention
Therefore, the invention provides a metering data reading device of a metering wheel and an intelligent gas meter, and aims to solve the technical problems that in the prior art, two reed switches are welded on the upper side and the lower side of the metering wheel with a magnet, the welding operation is inconvenient, and the micro leakage of the reed switches is easy to cause inaccurate metering results.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a metering data reading apparatus for a count word wheel, comprising:
the number wheel set comprises a number wheel and a steering piece in transmission connection with the number wheel through a transmission part, and the plane of the reciprocating motion track of the steering piece is not coplanar with the rotating plane of the number wheel; the steering piece is provided with a magnet which reciprocates along with the reciprocating motion of the steering piece;
the magnetic induction device is arranged corresponding to the steering piece and is electrically connected to the circuit board; and the magnetic induction device is used for inducing the change of the magnetic field and outputting counting pulses to the circuit board when the magnet moves to a position close to the magnetic induction device.
Further, the magnetic induction device comprises a first magnetic induction element and a second magnetic induction element; the magnet has with the in-process that the steering piece rotated with the magnet and corresponds with first magnetic induction component position so that first magnetic induction component induces the first position of magnetic field change, and with second magnetic induction component position corresponds so that second magnetic induction component induces the second position of magnetic field change.
Furthermore, the steering part is a rotating wheel with a rotating plane not coplanar with the rotating plane of the number counting wheel, and the transmission part comprises a transmission wheel in transmission connection with the rotating wheel.
Furthermore, the rotating wheel is a rotating gear with gear teeth protruding outwards on the periphery, and the driving wheel is a transmission gear meshed with the rotating gear.
Further, the rotation axes of the transmission gear and the rotation gear are parallel to each other and perpendicular to the rotation axis of the number wheel, respectively.
Furthermore, the number counting wheels are coaxially arranged, the outer covers are covered on the peripheries of the number counting wheels, and observation ports for observing the numerical values on the number counting wheels are formed in the outer covers; the rotating gear is at least partially exposed out of the outer cover.
Furthermore, the part where the transmission gear and the rotating gear are meshed with each other is arranged outside the outer cover.
Further, a transmission ratio between the transmission member and the number wheel is the same as a transmission ratio between the transmission member and the rotation gear.
Furthermore, the magnetic induction device is a patch type magnetic induction sensor attached to the circuit board.
On the other hand, the invention also provides an intelligent gas meter, which comprises a gas meter box, a control box arranged on the gas meter box, and a metering data reading device of the metering digit wheel, wherein the metering data reading device is arranged in the gas meter box and the control box; the character wheel is arranged in the gas meter box, and the circuit board is arranged in the control box.
Further, the gas meter box is equipped with the valve and with the first wiring socket that the valve electricity is connected, be equipped with in the control box with the second wiring socket that the circuit board electricity is connected, first wiring socket with be connected with valve control connecting wire between the second wiring socket, circuit board in the control box passes through valve control connecting wire control opening or closing of valve in the gas meter box.
Furthermore, an anti-disassembly magnet is arranged on the gas meter box, and an anti-disassembly magnetic induction device which is arranged on the circuit board corresponding to the anti-disassembly magnet in position is arranged on the control box; the disassembly-preventing magnetic induction device is used for sending a control signal for controlling the valve to be closed to the circuit board when the disassembly-preventing magnetic induction device senses that the disassembly-preventing magnet is separated from the disassembly-preventing magnet.
Further, the gas meter box is provided with a pressure sensor for detecting gas pressure in the gas meter base and a third wiring socket electrically connected with the pressure sensor, a fourth wiring socket electrically connected with the circuit board is arranged in the control box, and a pressure measurement connecting wire is connected between the third wiring socket and the fourth wiring socket.
Further, be equipped with in the gas table case be used for detecting the gas base table temperature sensor and with the fifth wiring socket that temperature sensor electricity is connected, be equipped with in the control box with the sixth wiring socket that the circuit board electricity is connected, fifth wiring socket with be connected with the temperature measurement connecting wire between the sixth wiring socket.
Furthermore, a display electrically connected with the circuit board is further arranged on the control box, and the display is used for displaying corresponding numerical values or codes according to the indication of the circuit board.
The technical scheme of the invention has the following advantages:
1. according to the metering data reading device of the metering wheel, the steering member is in transmission connection with the metering wheel through the transmission component, the rotation of the metering wheel can drive the steering member to reciprocate through the transmission component, so that the magnet on the steering member is driven to reciprocate, when the magnet rotates to a position close to the magnetic induction device, the magnetic induction device senses the change of a peripheral magnetic field and outputs counting pulses to the circuit board, and therefore electronic metering of the metering data of the metering wheel is completed; this kind of mode of realizing count number wheel electronic counting, with among the prior art with magnet direct mount on the number wheel, and compare the electronic counting mode of welding the tongue tube about the number wheel, turn to the piece through setting up the not coplane setting of reciprocating motion orbit and count number wheel rotation plane, can make the magnet on the piece that turns to and the mounted position that needs correspond the magnetic induction system who sets up with the magnet no longer receive the restriction of number wheel mounted position and rotation direction, magnet and magnetic induction system's installation space is bigger, installation operation is more convenient, and then can reduce because of the limited problem that causes the magnetic induction system of installation space is impaired and then influence the accuracy of electronic metering result.
2. According to the metering data reading device of the metering digit wheel, the first magnetic induction element and the second magnetic induction element are arranged, under a normal condition, the magnet does reciprocating motion with the steering piece in one period, and the two magnetic induction elements on the circuit board can generate two counting pulses together to finish electronic metering; when the magnet does a periodic reciprocating motion along with the steering piece, and two magnetic induction elements on the circuit board only generate a counting pulse or do not generate the counting pulse, the magnetic induction elements are determined to be influenced by an external abnormal magnetic field, so that the situation that a user changes the numerical value of electronic counting in a mode of influencing the electronic counting by applying a strong magnetic field can be effectively prevented.
3. The metering data reading device of the counting wheel has the advantages that the transmission precision of gear transmission is high, and the steering part and the transmission part adopt a gear meshing transmission mode, so that the transmission ratio between the counting wheel and the steering part can be kept unchanged, and the accuracy of an electronic counting result is improved.
4. According to the metering data reading device of the metering digit wheel, the rotating axes of the transmission gear and the rotating gear are parallel and perpendicular to the rotating axis of the metering digit wheel, the limitation of the installation position and the steering direction of the metering digit wheel on a magnet and a magnetic induction element can be reduced to the greatest extent, the installation space is enlarged, the convenience of installation operation is improved, and therefore the problem that errors occur in an electronic metering result due to damage of the magnetic induction element caused by the limitation of the installation space of the magnetic induction element is solved.
5. According to the metering data reading device of the metering wheel, the mutually meshed parts between the transmission gear and the rotating gear are arranged outside the outer cover, so that the interference of the outer cover on the movement of the magnet can be reduced, and the installation of the magnet and the selection of the model of the magnet are facilitated.
6. According to the metering data reading device of the metering digit wheel, the magnetic induction device adopts the surface-mounted magnetic induction sensor which can be directly mounted on the circuit board, so that the problems that manual intervention is much in the mounting process and electronic metering is inaccurate due to micro leakage of the reed switch in the electronic counting mode of the reed switch are solved, and the operation of connecting wires between the reed switch and the circuit board is omitted; the operation of mounting the surface-mounted magnetic induction sensor on the circuit board can be completed by automatic equipment in the production process of the circuit board, so that the realization of the automatic production of the whole body is facilitated; in addition, the magnetic field change induction of the surface mount type magnetic induction sensor to the magnet is more sensitive, stable and accurate compared with a reed switch, and the accuracy and the stability of electronic counting can be improved.
7. According to the intelligent gas meter provided by the invention, the metering data reading device of the metering digit wheel is adopted, the metering digit wheel is arranged in the gas meter box, the circuit board is arranged in the control box, and in the process of installing the control box outside the gas meter box, the magnetic induction device electrically connected with the circuit board, and the positions of the steering piece and the magnet arranged on the gas meter box can be synchronously arranged relatively, so that the intelligent gas meter is more convenient to install and operate.
8. According to the intelligent gas meter, the valve in the gas meter box is electrically connected with the circuit board in the control box through the valve control connecting wire, so that the circuit board can conveniently and automatically control the opening and closing of the valve.
9. According to the intelligent gas meter, the anti-disassembly magnet on the gas meter box and the anti-disassembly magnetic induction device on the circuit board are arranged, so that the installation state of the control box can be detected, the valve in the gas meter is controlled to be closed when the control box is disassembled, and the action that a user changes the gas consumption of the gas meter by disassembling the control box is prevented.
10. According to the intelligent gas meter, the pressure sensor and the temperature sensor are arranged in the gas meter box, so that the circuit board in the control box can conveniently monitor the pressure and the temperature in the gas meter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a side of a gas box body connected with a control box according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a side surface of the control box connected to the gas box according to the embodiment of the present invention.
Description of reference numerals: 1. a gas meter box; 11. a number wheel; 12. a rotating gear; 13. a magnet; 14. a transmission gear; 15. a housing; 16. a first wiring receptacle; 17. a third wiring jack; 18. a fifth wiring jack; 19. an anti-disassembly magnet; 2. a control box; 21. a first magnetic induction element; 22. a second magnetic induction element; 23. the magnetic induction device is prevented from being disassembled; 24. a second wiring receptacle; 25. a fourth wiring jack; 26. and a sixth wiring jack.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figures 1 and 2, the metering data reading device for the counting digit wheel comprises a self-wheel set and a magnetic induction device. The number wheel set comprises a number wheel 11 and a steering piece in transmission connection with the number wheel 11 through a transmission part, and the plane of the reciprocating motion track of the steering piece is not coplanar with the rotating plane of the number wheel 11; the steering member is provided with a magnet 13 which reciprocates in accordance with the reciprocating motion of the steering member. The magnetic induction device is arranged corresponding to the steering piece and is electrically connected to the circuit board; the magnetic induction device is used for inducing the change of the magnetic field and outputting counting pulses to the circuit board when the magnet 13 moves to a position close to the magnetic induction device.
According to the metering data reading device of the counting digit wheel, the counting digit wheel 11 is connected with a steering piece through a transmission part in a transmission way, the rotation of the counting digit wheel 11 can drive the steering piece to do reciprocating motion through the transmission part, so that a magnet 13 on the steering piece is driven to do reciprocating motion, when the magnet 13 rotates to a position close to a magnetic induction device, the magnetic induction device senses the change of a peripheral magnetic field and outputs counting pulses to a circuit board, and therefore electronic metering of the metering data of the counting digit wheel 11 is completed; this kind of mode of realizing 11 electronic counting of count number wheel, with magnet 13 direct mount on count number wheel 11 among the prior art, and compare the electronic counting mode of welding the tongue tube about count number wheel 11, through setting up the steering member that reciprocating motion orbit and 11 rotation planes of count number wheel are not coplane to be set up, can make magnet 13 on the steering member and the mounted position that needs correspond the magnetic induction system who sets up with magnet 13 no longer receive the restriction of 11 mounted position of count number wheel and direction of rotation, magnet 13 and magnetic induction system's installation space is bigger, installation operation is more convenient, and then can reduce the problem because of the limited magnetic induction system who causes of installation space is impaired and then influence the accuracy of electronic metering result.
In the present embodiment, the magnetic induction apparatus includes a first magnetic induction element 21 and a second magnetic induction element 22; the magnet 13 has a first position corresponding to the position of the first magnetic induction element 21 so that the first magnetic induction element 21 senses a change in the magnetic field, and a second position corresponding to the position of the second magnetic induction element 22 so that the second magnetic induction element 22 senses a change in the magnetic field during rotation with the steering member. By arranging the first magnetic induction element 21 and the second magnetic induction element 22, under normal conditions, the magnet 13 does reciprocating motion in one period along with the steering piece and sequentially passes through the first position and the second position, and the two magnetic induction elements on the circuit board can generate two counting pulses together to finish electronic metering; when the magnet 13 does a cycle of reciprocating motion along with the steering piece, and two magnetic induction elements on the circuit board only generate a counting pulse or do not generate the counting pulse, the magnetic induction elements are determined to be influenced by an external abnormal magnetic field, so that the situation that a user changes the numerical value of electronic counting in a mode of influencing electronic counting by applying a strong magnetic field can be effectively prevented. Of course, in other embodiments, the magnetic induction device may also include one, three or more magnetic induction elements, depending on the actual needs and safety level.
In a preferred embodiment of this embodiment, the steering member is a rotating wheel with a plane of rotation that is not coplanar with the plane of rotation of the number wheel 11, and the transmission member includes a transmission wheel in transmission connection with the rotating wheel. Specifically, the rotating wheel is a rotating gear 12 with outwardly convex gear teeth arranged on the periphery, and the driving wheel is a transmission gear 14 meshed with the rotating gear 12. The transmission gear 14 drives the rotating gear 12 to rotate in a gear meshing transmission mode, so that the magnet 13 on the rotating gear 12 can make reciprocating motion rotating around the axis of the rotating gear 12. Because gear drive has the advantage that the transmission precision is high, adopt the form of gear engagement transmission between steering member and the drive disk assembly, can ensure that the drive ratio between meter number wheel 11 and the steering member keeps unchangeable, and then improve the accuracy of electron count result. In other embodiments of the present embodiment, the transmission gear 14 of the transmission component can also be in transmission connection with the rotating gear 12 through a chain. In some embodiments, the steering member may also be a plurality of rotating gears 12 driven by meshing or by a chain, the magnet 13 is provided on any one of the rotating gears 12, and the installation position of the magnet 13 on the rotating gear 12 is offset from the rotation axis of the rotating gear 12. In other embodiments, the steering member may also be a swing rod, the transmission member includes a cam having one end abutting against the swing rod, the cam maintains a fixed transmission ratio relationship with the counting digit wheel 11 through the transmission assembly, and the cam pushes the swing rod to reciprocate during rotation, thereby driving the magnet 13 on the swing rod to reciprocate. In addition, the steering part can also be a sliding block which does a circular reciprocating motion on a circular track, the rotating part comprises a connecting rod with one end fixedly connected with the sliding block and a rotating disc which keeps synchronous rotation with the counting digit wheel 11, and the connecting rod is fixed on the rotating disc to rotate along with the rotating disc and drives the sliding block to do a reciprocating motion on the circular track. The specific structures of the steering member and the transmission component can be various, which is not illustrated here, as long as the magnet 13 on the steering member can reciprocate circularly along with the motion of the steering member, the plane of the reciprocating motion track of the steering member is not coplanar with the rotation plane of the counting character wheel 11, and the transmission component can keep the counting character wheel 11 and the steering member moving synchronously.
Further, the rotation axes of the transmission gear 14 and the rotation gear 12 are parallel to each other and perpendicular to the rotation axis of the count wheel 11, respectively. Generally speaking, the number wheels 11 are all installed on the surface of the box body, characters on the number wheels 11 can be observed through a view angle which is vertical to the surface of the box body, therefore, the direction of the rotating axis of the number wheels 11 is generally arranged in a direction which is vertical to the observation view angle of the surface of the box body, and the rotating axis of the rotating gear 12 is vertical to the rotating axis of the number wheels 11, namely, the rotating axis of the rotating gear 12 is vertical to the surface of the box body, therefore, the limitation of the installation position and the steering direction of the number wheels 11 on the magnet 13 and the magnetic induction element can be reduced to the maximum extent, the installation space is enlarged, the convenience of the installation operation is improved, and the problem that the electronic metering result is wrong due to the damage of the magnetic induction element caused by the.
In the embodiment, a plurality of number wheels 11 are coaxially arranged, the outer peripheries of the number wheels 11 are covered with an outer cover 15, and the outer cover 15 is provided with an observation port for observing the numerical values on the number wheels 11; the rotary gear 12 is at least partially exposed outside the housing 15. After the number wheel 11 is installed on the box body, on one hand, an observer needs to conveniently see the number on the number wheel 11 from the outside, and on the other hand, the number wheel 11 needs to be prevented from being manually stirred by hands or other parts; it is common to cover a plurality of number wheels 11 integrally with a cover 15, and provide a viewing port above the cover 15 for viewing the number on the number wheels 11, so that the cover 15 may interfere with the movement of the rotary gear 12 and the magnets 13 thereon. Since the transmission gear 14 is in transmission connection with the count character wheel 11, an inevitable part of the transmission gear is located in the outer cover 15, and for convenience of mounting the magnet 13 on the rotating gear 12, the rotating gear 12 needs to be integrally arranged outside the outer cover 15, so that a gap for extending the transmission gear 14 needs to be arranged at the bottom of the outer cover 15. The mutually meshed parts between the transmission gear 14 and the rotating gear 12 are arranged outside the outer cover 15, so that the safety protection requirement of the number wheel 11 can be met, the interference of the outer cover 15 on the movement of the magnet 13 can be reduced, the installation of the magnet 13 and the selection of the type of the magnet 13 are convenient, the magnet 13 can be directly installed on the rotating gear 12, the installation space of the magnet 13 can not be set by the adjacent outer cover 15, and in the process that the magnet 13 rotates along with the rotating gear 12, the magnet 13 can not enter the space in the outer cover 15 all the time, so the selection of the thickness of the magnet 13 can not be limited by the height of a gap at the bottom of the outer cover 15.
In the present embodiment, the transmission ratio between the transmission member and the count number wheel 11 is the same as the transmission ratio between the transmission member and the rotating wheel. When the counting wheel 11 rotates for one circle, the rotating gear 12 rotates for one circle, and the circuit board completes one-time electronic counting.
In this embodiment, the magnetic induction device is a surface mount magnetic induction sensor mounted on a circuit board. Compared with a common mode of carrying out electronic counting by adopting a reed switch, the surface-mounted magnetic induction sensor has less manual intervention in the installation process, and is not easy to cause the problem of inaccurate electronic metering caused by micro leakage of the installed reed switch; in addition, the operation of connecting the electric wire between the reed switch and the circuit board is also omitted. Moreover, the welding operation of the surface-mounted magnetic induction sensor mounted on the circuit board can be completed by automatic equipment in the production process of the circuit board, so that the realization of the automatic production of the whole body is facilitated; in addition, the magnetic field change induction of the surface mount type magnetic induction sensor to the magnet 13 is more sensitive, stable and accurate compared with a reed switch, and the accuracy and stability of electronic counting can be improved.
The metering data reading device of the metering wheel provided by the embodiment of the invention can be applied to various metering meters with the metering wheel 11, such as electric meters, water meters, gas meters and the like. The following describes in detail a measurement data reading apparatus including the measurement data wheel according to the above embodiment in an intelligent gas meter, taking the intelligent gas meter as an example.
As shown in fig. 1 and fig. 2, the intelligent gas meter includes a gas meter box 1, a control box 2 mounted on the gas meter box 1, and a metering data reading device of the above metering digit wheel disposed in the gas meter box 1 and the control box 2; the word wheelset is established in gas table case 1, and the circuit board setting is in control box 2. The control box 2 is provided with a display electrically connected with the circuit board, and the display is used for displaying corresponding numerical values or codes according to the indication of the circuit board.
This kind of intelligent gas table adopts foretell meter digit wheel's measurement data reading device to with the setting of meter digit wheel 11 at gas table case 1, set up the circuit board in control box 2, install control box 2 the outer process of gas table case 1, just can realize in step that the magnetic induction device that is connected with the circuit board electricity is connected and set up the position of turning to piece and magnet 13 on gas table case 1 and lay relatively, installation operation is more convenient.
In this embodiment, gas table case 1 is equipped with the valve and the first wiring socket 16 of being connected with the valve electricity, is equipped with the second wiring socket 24 of being connected with the circuit board electricity in the control box 2, is connected with the valve control connecting wire between first wiring socket 16 and the second wiring socket 24, and the circuit board in the control box 2 passes through the opening or closing of valve control connecting wire control gas table case 1 interior valve. The valve in the gas meter box 1 is electrically connected with the circuit board in the control box 2 through a valve control connecting wire, so that the opening and closing of the valve can be automatically controlled by the circuit board conveniently.
In the embodiment, the gas meter box 1 is provided with an anti-disassembly magnet 19, and the control box 2 is provided with an anti-disassembly magnetic induction device 23 which is arranged on the circuit board corresponding to the anti-disassembly magnet 19; the disassembly-prevention magnetic induction device 23 is used for sending a control signal for controlling the valve to be closed to the circuit board when the disassembly-prevention magnetic induction device is separated from the disassembly-prevention magnet 19. Specifically, the detachment prevention magnetic induction device 23 is also a surface mount magnetic induction sensor that is attached to and welded to the circuit board. The setting of anti-disassembly magnet 19 and the anti-disassembly magnetic induction device 23 on the circuit board on the gas table case 1 can detect the mounted state of control box 2 to control the valve in the gas table to close when control box 2 is dismantled, prevent that the user from changing the action of gas table gas quantity through dismantling control box 2.
In this embodiment, the gas meter box 1 is provided with a pressure sensor for detecting gas pressure in the gas meter base and a third wiring socket 17 electrically connected with the pressure sensor, a fourth wiring socket 25 electrically connected with the circuit board is arranged in the control box 2, and a pressure measurement connecting wire is connected between the third wiring socket 17 and the fourth wiring socket 25. Still be equipped with the temperature sensor who is used for detecting the interior temperature of gas base table and the fifth wiring socket 18 of being connected with the temperature sensor electricity in the gas table case 1, be equipped with the sixth wiring socket 26 of being connected with the circuit board electricity in the control box 2, be connected with the temperature measurement connecting wire between fifth wiring socket 18 and the sixth wiring socket 26. The arrangement of the pressure sensor and the temperature sensor in the gas meter box 1 facilitates the monitoring of the pressure and the temperature in the gas meter by the circuit board in the control box 2.
In summary, according to the metering data reading device of the metering digit wheel and the intelligent gas meter provided by the embodiment of the invention, the metering digit wheel 11 on the gas meter box 1 is in transmission connection with the rotating gear 12 through the transmission component, the rotation of the metering digit wheel 11 can drive the steering component to do reciprocating motion through the transmission component, so as to drive the magnet 13 on the rotating gear 12 to do reciprocating motion, when the magnet 13 rotates to a position close to the magnetic induction element, the magnetic induction element senses the change of the peripheral magnetic field and outputs the counting pulse to the circuit board, so that the electronic metering of the metering data of the metering digit wheel 11 is completed; this kind of mode of realizing the electronic counting of count number wheel 11, with magnet 13 direct mount on count number wheel 11 among the prior art, and compare the electronic counting mode of welding the tongue tube about count number wheel 11, through setting up the rotating gear 12 that the reciprocating motion orbit set up with 11 rotation planes of count number wheel are mutually perpendicular, can make magnet 13 on the rotating gear 12 and the mounted position that needs the magnetic induction element that corresponds the setting with magnet 13 no longer receive the restriction of count number wheel 11 mounted position and direction of rotation, magnet 13 and magnetic induction element's installation space is bigger, installation operation is more convenient, and then can reduce the problem that the magnetic induction element that causes because of the installation space is restricted is impaired and then influence the accuracy of electronic metering result.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (15)
1. A device for reading metering data of a counter wheel, comprising:
the character wheel set comprises a number wheel (11) and a steering member in transmission connection with the number wheel (11) through a transmission component, and the plane of the reciprocating motion track of the steering member is not coplanar with the rotating plane of the number wheel (11); the steering part is provided with a magnet (13) which reciprocates along with the reciprocating motion of the steering part;
the magnetic induction device is arranged corresponding to the steering piece and is electrically connected to the circuit board; the magnetic induction device is used for inducing the change of a magnetic field and outputting counting pulses to the circuit board when the magnet (13) moves to a position close to the magnetic induction device.
2. The metering data reading device of a metering wheel according to claim 1, characterized in that the magnetic induction means comprise a first magnetic induction element (21) and a second magnetic induction element (22); the magnet (13) has a first position corresponding to the position of the first magnetic induction element (21) so that the first magnetic induction element (21) induces a change in a magnetic field, and a second position corresponding to the position of the second magnetic induction element (22) so that the second magnetic induction element (22) induces a change in a magnetic field during rotation of the steering member.
3. The apparatus for reading the measurement data of a number wheel according to claim 1, wherein the steering member is a rotatable wheel having a plane of rotation that is not coplanar with a plane of rotation of the number wheel (11), and the transmission member comprises a transmission wheel drivingly coupled to the rotatable wheel.
4. The apparatus for reading the measurement data of a number wheel according to claim 3, wherein the rotary wheel is a rotary gear (12) provided with teeth protruding outward on the outer periphery thereof, and the transmission wheel is a transmission gear (14) engaged with the rotary gear (12).
5. The metering data reading device of the metering wheel according to claim 4, characterized in that the rotation axes of the transmission gear (14) and the rotation gear (12) are parallel to each other and perpendicular to the rotation axis of the metering wheel (11), respectively.
6. The device for reading the measurement data of the number wheel according to claim 4, wherein the number wheel (11) is provided in plurality and coaxially, a plurality of the number wheels (11) are covered with a cover (15) at the periphery, and the cover (15) is provided with a viewing port for viewing the values on the plurality of the number wheels (11); the rotating gear (12) is at least partially exposed outside the outer cover (15).
7. The apparatus for reading the metering data of a count word wheel according to claim 6, wherein the portion where said transmission gear (14) and said rotation gear (12) mesh with each other is outside said housing (15).
8. The metering data reading device of a metering wheel according to claim 4, characterized in that the transmission ratio between the transmission member and the metering wheel (11) is the same as the transmission ratio between the transmission member and the rotary gear (12).
9. The apparatus for reading measurement data of a number wheel according to any one of claims 1 to 8, wherein the magnetic induction device is a patch type magnetic induction sensor attached to the circuit board.
10. An intelligent gas meter, characterized by comprising a gas meter box (1), a control box (2) mounted on the gas meter box (1), and a metering data reading device of the metering wheel according to any one of claims 1-9, which is arranged in the gas meter box (1) and the control box (2); the character wheel set is arranged in the gas meter box (1), and the circuit board is arranged in the control box (2).
11. The intelligent gas meter according to claim 10, wherein the gas meter box (1) is provided with a valve and a first wiring socket (16) electrically connected with the valve, a second wiring socket (24) electrically connected with the circuit board is arranged in the control box (2), a valve control connecting wire is connected between the first wiring socket (16) and the second wiring socket (24), and the circuit board in the control box (2) controls the opening or closing of the valve in the gas meter box (1) through the valve control connecting wire.
12. The intelligent gas meter according to claim 11, wherein an anti-disassembly magnet (19) is provided on the gas meter box (1), and an anti-disassembly magnetic induction device (23) provided on the circuit board corresponding to the anti-disassembly magnet (19) is provided on the control box (2); the disassembly-preventing magnetic induction device (23) is used for sending a control signal for controlling the valve to be closed to the circuit board when the disassembly-preventing magnetic induction device is inducted to be separated from the disassembly-preventing magnet (19).
13. The intelligent gas meter according to claim 10, wherein the gas meter box (1) is provided with a pressure sensor for detecting gas pressure in the gas meter base and a third wiring socket (17) electrically connected with the pressure sensor, a fourth wiring socket (25) electrically connected with the circuit board is arranged in the control box (2), and a pressure measurement connecting wire is connected between the third wiring socket (17) and the fourth wiring socket (25).
14. The intelligent gas meter according to claim 10, wherein a temperature sensor for detecting the temperature in the gas meter base and a fifth wiring socket (18) electrically connected with the temperature sensor are arranged in the gas meter box (1), a sixth wiring socket (26) electrically connected with the circuit board is arranged in the control box (2), and a temperature measurement connecting wire is connected between the fifth wiring socket (18) and the sixth wiring socket (26).
15. The intelligent gas meter according to claim 10, wherein a display electrically connected to the circuit board is further provided on the control box (2), and the display is configured to display a corresponding numerical value or code according to an indication of the circuit board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010400225.1A CN111486917A (en) | 2020-05-12 | 2020-05-12 | Metering data reading device for counting character wheel and intelligent gas meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010400225.1A CN111486917A (en) | 2020-05-12 | 2020-05-12 | Metering data reading device for counting character wheel and intelligent gas meter |
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| CN202010400225.1A Pending CN111486917A (en) | 2020-05-12 | 2020-05-12 | Metering data reading device for counting character wheel and intelligent gas meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114111938A (en) * | 2021-11-12 | 2022-03-01 | 常州维格电子有限公司 | Micro-leakage detection intelligent diaphragm type gas meter device plate and method |
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