CN206479299U - A kind of photo-electric deflection of bridge span instrument calibrating installation - Google Patents

Abstract

The utility model provides a kind of photo-electric deflection of bridge span instrument calibrating installation, including measurement host, and the measurement data based on setting reference data and flexometer to be calibrated calculates the calibration data of flexometer to be calibrated；Mobile module, is connected with the measurement host, handles the obtained control signal vertical level movement of reference data to allow flexometer to be calibrated to carry out deflection metrology based on the measurement host；Automatic leveling module, sets the mobile module and is connected with the measurement host thereon, is controlled to realize automatic leveling by the measurement host.The utility model can realize natural bow and the dynamic deflection calibration of photo-electric deflection of bridge span instrument.

Description

A photoelectric bridge deflection meter calibration device

technical field

The utility model belongs to the technical field of bridge detection, in particular to a photoelectric bridge deflection meter calibration device.

Background technique

With the rapid development of China's economy, there has been a trend of heavy-duty, high-speed, and large-flow modern transportation structures in transportation, and the proportion of road transportation in the entire transportation system is increasing. Bridges are the throat of roads. Therefore, road transportation has put forward higher requirements on the structural performance and service quality of existing bridges (ie old bridges) and new bridges. In order to test the quality of newly built bridges and ensure the safety of bridge structures in service, on-site load tests and health monitoring of bridges are indispensable.

There are two types of bridge load tests: static load test and dynamic load test. The static load test is to observe the physical quantities such as reaction force, strain, displacement, rotation angle and crack of the bridge structure according to the needs. The dynamic load test is to observe the inherent dynamic characteristics of the bridge and the dynamic response of each control part of the bridge structure under the actual dynamic load, including amplitude, frequency, damping, dynamic strain or dynamic deflection (impact coefficient), etc. The displacement observation in the static load test mainly refers to the observation of the deflection of the bridge. The impact coefficient in the dynamic load test is a comprehensive index reflecting the impact of vehicle load on the dynamics of the bridge structure. According to the definition of the impact coefficient (the ratio of the dynamic deflection to the static deflection under the corresponding load is called the impact coefficient of the live load), it can be calculated by the measured deflection.

Bridge deflection is a very important parameter for bridge structures, which directly reflects the vertical overall stiffness of bridge structures and is an important indicator of bridge structural performance. Bridge deflection is closely related to the bearing capacity of the bridge and the ability to withstand dynamic loads such as earthquakes. The industry recommendation standard JTG/T J21-2011 of the People's Republic of China "Regulations for Testing and Evaluation of Highway Bridge Bearing Capacity" has clear requirements for the index of deflection in the bearing capacity, and takes deflection as one of the important contents of the evaluation of bridge bearing capacity. Therefore, the bridge deflection inspection business is an indispensable inspection item and basic capability in each inspection institution.

At present, the photoelectric bridge deflection meter is mainly used for deflection observation, which is used in construction quality control, old bridge quality assessment, special load test, bridge health monitoring, etc. With the increasingly widespread application of photoelectric bridge deflection meters, a large number of manufacturers have been born, and various deflection detectors have emerged as the times require. However, there is no suitable calibration device for the photoelectric bridge deflection meter at present, and the metrology department cannot carry out truly effective and comprehensive measurement of the special instruments and equipment.

Utility model content

In order to solve the above problems, the utility model provides a photoelectric bridge deflection meter calibration device, which is used to realize the static deflection and dynamic deflection calibration of the photoelectric bridge deflection meter.

According to one embodiment of the present invention, a photoelectric bridge deflection meter calibration device is provided, including:

The measuring host calculates the calibration data of the deflection gauge to be calibrated based on the set reference data and the measurement data of the deflection gauge to be calibrated;

The mobile module is connected to the measurement host, and moves vertically to the horizontal plane based on the control signal obtained by processing the reference data of the measurement host to allow the deflection instrument to be calibrated to perform deflection measurement;

An automatic leveling module, on which the mobile module is arranged and connected to the measurement host, is controlled by the measurement host to realize automatic leveling.

According to an embodiment of the present invention, the automatic leveling module includes:

base;

a level detection device, arranged on the base, connected to the measurement host, for detecting the level state of the base and sending the detected level state data to the measurement host;

The leveling support is arranged on the lower bottom surface of the base, is connected with the measuring host, and moves based on a control signal obtained by processing the horizontal status data of the measuring host, so that the base is in a horizontal state.

According to an embodiment of the present utility model, the automatic leveling module is provided with three leveling supports arranged in a triangle and having a fine-tuning motor connected to the measuring host.

According to an embodiment of the present invention, the level detection device includes a three-axis gyroscope and a level sensor.

According to an embodiment of the utility model, the mobile module includes:

The lead screw is vertically arranged on the base through the frame;

a slide table fixed on the lead screw and moving vertically following the lead screw;

The servo motor is fixed on the frame and connected with the measuring host to drive the lead screw to move.

According to an embodiment of the utility model, the mobile module further includes:

Two servo motors are respectively fixed on the frame and connected to the measuring host respectively;

Two unidirectional rotation mechanisms are respectively arranged at both ends of the lead screw and fixed on the frame, respectively connected to a servo motor and controlled by the servo motor so that the lead screw performs unidirectional rotation.

According to an embodiment of the present utility model, the moving module further includes an encoder fixed on the lead screw for obtaining the rotation amount of the lead screw.

According to an embodiment of the utility model, the measurement host includes:

memory for storing benchmark data;

The main controller outputs the motor drive signal based on the reference data, and calculates the calibration data of the deflection meter to be calibrated based on the reference data and the measurement data of the deflection meter to be calibrated;

The motor driver drives the servo motor according to the motor drive signal output by the main controller.

According to an embodiment of the present utility model, the measurement host further includes:

a display connected to the main controller;

The keyboard is connected with the main controller and used for editing and inputting reference data.

According to an embodiment of the utility model, the measurement host also includes:

an encoder interface, connected to the main controller, for receiving the output data of the encoder;

A power supply, connected to the main controller, for providing working power to the main controller;

A clock chip, connected to the main controller, is used to provide a clock signal to the main controller.

The beneficial effects of the utility model:

(1) The utility model proposes a bridge dynamic deflection calibration device for the first time, which provides technical support for the dynamic deflection calibration of the photoelectric bridge deflection meter.

(2) The base of the photoelectric bridge deflection meter calibration device described in the utility model adopts three supports with fine-tuning motors combined with a three-axis gyroscope for automatic leveling, which eliminates the manual leveling link before calibration and improves the work efficiency. efficiency. Using a three-axis gyroscope to judge the level of the base improves the accuracy, ensures that the moving direction of the slide table is perpendicular to the horizontal plane, ensures the accuracy of the calibration results, and reduces the uncertainty of the calibration equipment.

(3) The utility model uses an encoder to feed back the displacement of the slide table. Compared with the solution of the grating ruler, the utility model reduces the auxiliary equipment required in the installation process of the equipment and saves the installation cost.

(4) The utility model can calibrate the static deflection and the dynamic deflection separately, which saves the calibration time and improves the calibration efficiency.

(5) The utility model adopts the encoder for feedback and forms a closed-loop control with the servo motor, which improves the accuracy of the moving position of the slide table and ensures the accuracy of the calibration result.

(6) The calibration method proposed by the utility model moves the calibration of the dynamic deflection from the bridge site to the laboratory, which reduces the dependence on the calibration environment, reduces the calibration cost, improves the calibration speed, and the calibration results are more feasible.

(7) The utility model can meet the calibration needs of a large number of photoelectric bridge deflection meter manufacturers and the measurement needs of the measurement department, can meet the needs of bridge infrastructure construction, and will generate a large number of economic benefits.

(8) The mobile module of the photoelectric bridge deflection meter calibration device described in the utility model adopts the structure of double motors combined with double unidirectional rotating mechanisms, and cooperates with the processed dynamic deflection curve, which can break through the hardware limitations of the motor lead screw and realize the dynamic deflection The curve reproduces.

Other features and advantages of the present invention will be set forth in the following description, and, in part, will be apparent from the description, or can be learned by practicing the present invention. The objectives and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the specification, claims and accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required in the description of the embodiments will be briefly introduced below:

Fig. 1 is a schematic structural diagram of a photoelectric bridge deflection meter calibration device according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a measuring host according to an embodiment of the present invention;

Fig. 3 is a process of using the photoelectric bridge deflection meter calibration device according to an embodiment of the present invention.

detailed description

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in the utility model. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the utility model can be combined with each other, and the formed technical solutions are all within the protection scope of the utility model.

According to the requirements of "General Code for Design of Highway Bridges and Culverts" (JTG D60-2004) and "Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts" (JTG D62-2004), the calibration of photoelectric bridge deflection meters mainly includes the calibration of static deflection indications , Dynamic deflection indication calibration, etc. The prior art scheme is as follows:

1) Calibration of static deflection indication

The grating displacement measurement system is used, and the grating displacement measurement system is composed of a lifting and translation screw, a grating ruler and a stepping motor. The stepping motor can drive the translation platform to move horizontally and vertically, and the moving distance can be measured by the grating ruler.

During the measurement, the displacement platform moves 10 distances evenly according to the measurement range, and the displacement output by the grating ruler is used as the deflection standard value, and the photoelectric bridge deflection meter is started to measure the actual deflection value at each position. Take the maximum value of indication error among 10 positions as the deflection indication error.

2) There is no calibration method for the indication value of dynamic deflection.

Known by above prior art scheme, the defective that it exists is as follows:

1) There are technical defects in the open-loop system formed by the stepping motor for displacement control, that is, the moving distance output by the controller and the actual moving distance of the stage cannot be guaranteed to be consistent.

2) When measuring the moving distance of the grating ruler, the parallelism between the main ruler of the grating ruler and the moving direction is extremely high, which leads to difficulties in the actual installation process of the device, excessive investment in purchasing auxiliary devices, and high overall cost.

3) The prior art does not take into account the level of the photoelectric bridge deflection meter calibration device. If the moving direction of the displacement platform of the photoelectric bridge deflection meter calibration device is not perpendicular to the ground, the error will be large, and the calibration work cannot be performed.

4) The current technical means can only calibrate the static deflection, but cannot calibrate the dynamic deflection.

Therefore, the utility model provides a photoelectric bridge deflection meter calibration device, including a measuring host 1, a moving module and an automatic leveling module, as shown in FIG. 1 . Among them, the measurement host calculates the calibration data of the deflection instrument to be calibrated based on the reference data and the measurement data of the deflection instrument to be calibrated; the mobile module is connected to the measurement host, and moves vertically and horizontally based on the control signal obtained by processing the reference data of the measurement host to make the deflection instrument to be calibrated Perform deflection measurement; the automatic leveling module is equipped with a mobile module and connected to the measurement host, which is controlled by the measurement host to achieve automatic leveling. The connection relationship between the mobile module, the automatic leveling module and the measurement host is shown in the thick line 5 (ie, the data line) in Figure 1.

In the utility model, by setting the automatic leveling module, it can ensure that the vertical movement direction of the mobile module arranged on it is perpendicular to the ground, so as to ensure the measurement accuracy of the deflection meter to be calibrated. The mobile module moves vertically based on the reference data, where the reference data is the displacement data output by the measurement module, and the mobile module moves along the vertical ground direction based on the displacement data. The calibration method proposed by the utility model moves the calibration of the dynamic deflection from the bridge site to the laboratory, reduces the dependence on the calibration environment, reduces the calibration cost, improves the calibration speed, and has higher feasibility of the calibration result. The utility model can also meet the calibration needs of a large number of photoelectric bridge deflection meter manufacturers and the measurement needs of measurement departments, and can meet the needs of bridge infrastructure construction, and will generate a large number of economic benefits.

The built-in benchmark data of the measurement host includes the displacement information required for static deflection calibration and the dynamic deflection curve required for dynamic deflection calibration. This information can be increased or decreased by the control of the measurement host to ensure that it can cover different forms of photoelectric bridge deflection The static deflection value and dynamic deflection curve required for instrument calibration. Moreover, the built-in displacement information and dynamic deflection curve do not need to be saved by programming and curing, but can be directly copied and saved. Therefore, the utility model can calibrate the static deflection and the dynamic deflection, save the calibration time, and improve the calibration efficiency.

In one embodiment of the present utility model, the automatic leveling module includes a base 7 , a leveling support provided on the bottom surface of the base, and a level detection device 8 provided on the base, as shown in FIG. 1 . Wherein, the mobile module is fixed on the base 7, the leveling support and the level detection device are respectively connected with the measurement host, the level detection device detects the level state of the base and outputs the level state data to the measurement host, and the measurement host adjusts the adjustment based on the level state data. Flat stand so that the base is level, i.e. level with the ground.

In one embodiment of the present invention, the balance detection device can be replaced by a three-axis gyroscope or a level sensor, and of course other level detection devices can also be used. The present invention is described with a three-axis gyroscope. In one embodiment of the present invention, three adjustment supports with fine-tuning motors are provided on the lower surface of the base, arranged in a triangle, as shown by 7-1, 7-2, and 7-3 in Fig. 1 .

In one embodiment of the present invention, the automatic leveling module is provided with three leveling supports arranged in a triangle and equipped with fine-tuning motors connected to the measuring host. The base uses three supports with fine-tuning motors combined with a three-axis gyroscope for automatic leveling. One of the supports is at the midpoint of one side of the device base, and the other two are at the two ends of the other side of the device base, forming a The triangular structure is not only stable but also suitable for automatic leveling algorithms.

The level detection device, the leveling support and the base on the automatic leveling module work in conjunction with the measuring module. The three-axis gyroscope is installed on the plane of the base (if the base is a hollow box inside, the three-axis gyroscope can be installed inside the base), and the support with fine-tuning motor is installed on the bottom of the base and the support is triangular layout. When working, the three-axis gyroscope reads the level of the base and outputs it to the measuring host. The measuring host analyzes the offset angles of each axis and calculates them, transforming them into the rotation amounts of the three fine-tuning motors, so that the three supports The base moves, adjust the base to be horizontal, make the screw perpendicular to the horizontal plane, and ensure that the moving direction of the slide table is perpendicular to the horizontal plane.

In the utility model, the base uses three supports with fine-tuning motors combined with a three-axis gyroscope for automatic leveling, eliminating the need for manual leveling before calibration and improving work efficiency. Using a three-axis gyroscope to judge the level of the base improves the accuracy, ensures that the moving direction of the slide table is perpendicular to the horizontal plane, ensures the accuracy of the calibration results, and reduces the uncertainty of the calibration equipment.

In one embodiment of the present utility model, the mobile module includes a lead screw 3 arranged on the base through a frame 31, a slide table 2 fixed on the lead screw and capable of following the movement of the lead screw, and fixed on the frame and measuring Servo motor connected to the host and used to drive the lead screw. Specifically, the servo motor drives the lead screw to be vertical to the ground and drives the sliding table to move up and down. The slide table here is used to replace the bridge, and the deflection of the bridge is simulated and measured by observing the up and down movement of the slide table.

In an embodiment of the present invention, the moving module further includes two servo motors and two one-way rotation mechanisms. Among them, two servo motors are respectively fixed on the frame, and are respectively connected with the measuring host; two unidirectional rotating mechanisms are respectively arranged at both ends of the lead screw and fixed on the frame, respectively connected with a servo motor and controlled by the servo motor. The motors are controlled separately to make the lead screw rotate in one direction. In this way, it is beneficial for the servo motor to control the vertical and horizontal movement of the lead screw, and the two directions will not be interfered. Moreover, the structure of dual motors combined with dual one-way rotating mechanisms, combined with the processed dynamic deflection curve, can break through the hardware limitations of the motor screw and realize the reproduction of the dynamic deflection curve.

Specifically, as shown in FIG. 2 , the servo motor 6 is responsible for the upward movement of the sliding table, and the servo motor 9 is responsible for the downward movement of the sliding table, that is, each servo motor only rotates in one direction. The one-way rotation mechanism 11 and the one-way rotation mechanism 10 work together so that the rotation between the servo motor 6 and the servo motor 9 does not interfere with each other, and its working form is: when the servo motor 6 moves, the one-way rotation mechanism 11 will move from the servo The motor 6 is transmitted to the lead screw, thereby driving the sliding table to move upward, and the one-way rotation mechanism 10 makes the servo motor 9 slip and does not move with the lead screw; when the servo motor 9 moves, the one-way rotation mechanism 10 will move from the servo motor 9 is transmitted to the lead screw, thereby driving the slide table to move downward, while the one-way rotation mechanism 11 makes the servo motor 6 slip and does not move with the lead screw.

In one embodiment of the present invention, the mobile module further includes an encoder 4 fixed on the lead screw for measuring the rotation data of the lead screw. As shown in Figure 2, the measuring host drives the servo motor to control the sliding table to move on the lead screw according to the corresponding displacement or curve, read the value returned by the encoder through the encoder interface, and form a closed-loop control with the servo motor to correct the servo motor in real time The amount of rotation to ensure that the moving distance of the slide table is the same as the value output by the main controller. The closed-loop control system is adopted to make the moving position of the slide table knowable and controllable. Use the servo motor to drive the screw to rotate, thereby driving the sliding table to move, and install an encoder at the other end of the screw, collect the actual displacement of the sliding table through the encoder, and feed it back to the controller to control the rotation of the servo motor in real time , to ensure that the displacement of the sliding table is dynamically consistent with the displacement output from the controller to the servo motor. An encoder is used to monitor the displacement of the slide table. Because the encoder has high precision and is easy to install, the economic investment in the installation and production process of the device is small, and the maintenance cost is low. Moreover, the utility model uses an encoder to feed back the displacement of the slide table. Compared with the solution of the grating ruler, the utility model reduces the auxiliary equipment required in the installation process of the equipment and saves the installation cost. The utility model adopts an encoder for feedback, forms a closed-loop control with a servo motor, improves the accuracy of the moving position of the slide table, and ensures the accuracy of calibration results.

In one embodiment of the present utility model, the measuring host includes a memory, a main controller and a motor driver. Among them, the memory is used to store the reference data; the main controller outputs the motor drive signal based on the reference data, and calculates the calibration data of the deflection meter to be calibrated based on the reference data and the measurement data of the deflection meter to be calibrated; The drive signal drives the servo motor. Specifically, as shown in Figures 1 and 2, 1-1 is a controller, 1-2 is a button, 1-3 is a display, 1-4 is a switch, and the like. The reference data built in the memory includes the displacement information and the dynamic deflection curve required for static deflection calibration. This information can be increased or decreased through the memory to ensure that it can cover the static deflection values required for calibration of different types of photoelectric bridge deflection meters. and dynamic deflection curves. The dynamic deflection curve is the curve extracted after the data processing of the measured dynamic deflection curve set, which is convenient for the reproduction of the photoelectric bridge deflection meter calibration device.

Specifically, the measuring host can automatically decompose the dynamic deflection curve into the moving speed, moving time and moving distance information of the slide table, and then convert it into the servo motor rotation speed, rotation time and rotation angle information to drive the servo motor to rotate. The measuring host drives the servo motor through the motor driver to control the sliding table to move on the lead screw according to the corresponding displacement or curve, reads the value returned by the encoder through the encoder interface and forms a closed-loop control with the servo motor, and corrects the rotation amount of the servo motor in real time. To ensure that the moving distance of the sliding table is the same as the value output by the main controller. The dynamic deflection curve reproduced by the calibration device here is a curve extracted from the measured dynamic deflection curve after data processing, so as to meet the operation requirements of the servo motor.

In one embodiment of the present invention, the measuring host also includes a display and a keyboard connected to the main controller, wherein the keyboard can be used for function selection, and can also be used for editing and inputting static deflection displacement and dynamic deflection curve. The monitor can display the function selection interface, display the value and image of the output static deflection displacement or dynamic deflection curve in real time, and display the editing process of static deflection displacement and dynamic deflection curve, etc.

In one embodiment of the present invention, the measuring host also includes an encoder interface, a power supply and a clock chip. Wherein, the encoder interface is connected with the main controller for receiving the output data of the encoder; the power supply is connected with the main controller for providing working power to the main controller; the clock chip is connected with the main controller for providing The main controller provides the clock signal.

The basic principle steps of the calibration device measurement of the utility model include: vertically moving the mobile module used to simulate the bridge based on the reference data, and at the same time, the deflection meter to be calibrated is used to measure the deflection of the mobile module; Calibrate the calibration data of the deflection meter, and calibrate the deflection meter to be calibrated based on the calibration data, wherein the reference data includes: a displacement signal for static deflection calibration and a dynamic deflection curve for dynamic deflection calibration. The implementation process of photoelectric bridge deflection meter calibration using the above device is shown in Figure 3, which specifically includes the following steps:

(1) Direct the lens of the photoelectric bridge deflection meter to the slide mark of the calibration device.

(2) Start the calibration device, which will perform automatic leveling after power-on self-test, so that the position of the slide table will return to zero (set to the midpoint position of the screw).

(3) Select static deflection and dynamic deflection calibration.

(4) Select the mode, which is divided into built-in displacement (or built-in dynamic deflection curve) and manual input displacement (or manual input dynamic deflection curve).

(5) Start the photoelectric bridge deflection meter and start the deflection measurement.

(6) The sliding platform of the calibration device starts to move according to the selected displacement or dynamic deflection curve, and the photoelectric bridge deflection meter measures the movement of the sliding platform in real time. After the sliding table stops moving, stop the deflection measurement of the photoelectric bridge deflection instrument.

(7) Choose whether to continue the measurement. If you continue to measure, repeat the above (3)~(6). If not, choose whether to return to the dynamic/static deflection calibration. If you return, repeat the above (4)~(6). Return to exit the measurement directly.

(8) The sliding table position returns to zero when exiting the measurement.

(9) Turn off the photoelectric bridge deflection meter.

Through the above steps (1)-(9), the calibration data of the photoelectric bridge deflection meter to be tested can be obtained, and the photoelectric bridge deflection meter to be tested is calibrated based on the calibration data.

Although the embodiments disclosed in the present utility model are as above, the content described is only an embodiment adopted for the convenience of understanding the present utility model, and is not intended to limit the present utility model. Anyone skilled in the technical field to which the utility model belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the utility model, but the patent of the utility model The scope of protection must still be based on the scope defined in the appended claims.

Claims (11)

1. a kind of photo-electric deflection of bridge span instrument calibrating installation, including：

Measurement host；

Mobile module, is connected with the measurement host, realizes vertical level movement so as to treat school by measurement host control Quasi- flexometer carries out deflection metrology；

Automatic leveling module, sets the mobile module and is connected with the measurement host, controlled by the measurement host thereon To realize automatic leveling.

2. device according to claim 1, it is characterised in that the automatic leveling module includes：

Base；

Horizontal detector part, is arranged on the base, is connected with the measurement host；

Leveling support, is arranged at the bottom surface of the base, is connected with the measurement host.

3. device according to claim 2, it is characterised in that the automatic leveling module is provided with 3 cloth triangular in shape The leveling support putting, with the fine setting motor being connected with the measurement host.

4. device according to claim 2, it is characterised in that the horizontal detector part includes three-axis gyroscope and level Sensor.

5. the device according to any one of claim 2-4, it is characterised in that the mobile module includes：

Leading screw, is vertically installed on the base by frame；

Slide unit, is fixed on the leading screw and follows the leading screw to vertically move；

Servomotor, is fixed in frame, and is connected with the measurement host, for driving the guide screw movement.

6. device according to claim 5, it is characterised in that the mobile module also includes：

Two servomotors, are individually fixed in frame, and are connected respectively with the measurement host；

Two one-way rotation mechanisms, are respectively arranged at the two ends of leading screw and are fixed in frame, connect respectively with a servomotor Connect and controlled respectively by servomotor to cause leading screw to carry out single direction rotation.

7. device according to claim 5, it is characterised in that the mobile module also includes being fixed on the leading screw Encoder.

8. device according to claim 6, it is characterised in that the mobile module also includes being fixed on the leading screw Encoder.

9. the device according to claim 7 or 8, it is characterised in that the measurement host includes：

Memory；

Master controller, is connected with the memory；

Motor driver, is connected with the master controller.

10. device according to claim 9, it is characterised in that the measurement host also includes：

Display, is connected with the master controller；

Keyboard, is connected with the master controller.

11. device according to claim 9, it is characterised in that the measurement host also includes：

Encoder interfaces, are connected with the master controller；

Power supply, is connected with the master controller；

Clock chip, is connected with the master controller.