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Device, system and method for testing accelerometer meter core

An accelerometer and testing device technology, which is used in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, and measurement devices, etc. High degree of calculation automation, avoid manual calculation errors, and improve the effect of accuracy and precision

Active Publication Date: 2020-05-05
航天科工惯性技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to propose a kind of testing device, system and method of the accelerometer watch core for the problem that the test precision of the accelerometer watch core in the above-mentioned prior art is not high, can effectively improve the test precision of the accelerometer watch core

Method used

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  • Device, system and method for testing accelerometer meter core
  • Device, system and method for testing accelerometer meter core
  • Device, system and method for testing accelerometer meter core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] refer to figure 1 , the present embodiment provides a test device for an accelerometer watch core, including a first power supply module 101, a watch core interface module 102, a circuit interface module 103, a torque device selection module 104, and a degree of freedom test module 105;

[0052] The first power supply module 101 is connected with the torquer selection module 104 and the degree of freedom test module 105 through the circuit interface module 103;

[0053] The movement interface module 102 is connected to the degree of freedom test module 105 and the circuit interface module 103, and the torque device selection module 104 is connected to the circuit interface module 103;

[0054] The degree of freedom test module 105 includes a gear switch and a degree of freedom selection module. The degree of freedom selection module includes n capacitors (C1-Cn) and n single-pole single-throw switches (K1-Kn), wherein one capacitor and one single-pole single-throw The ...

Embodiment 2

[0074] refer to figure 2 , the present embodiment provides a test system for an accelerometer watch core, including the test device 201 for the above-mentioned accelerometer watch core, and also includes an AD acquisition module 202, a second power supply module 203, a control module 204, a serial port communication module 205 and a host Machine 206;

[0075] The AD acquisition module 202 is connected with the circuit interface module in the test device 201 of the accelerometer watch core, and the second power supply module 203 is connected with the control module 204, the AD acquisition module 202 and the serial port communication module 205, and the control module 204 is connected with the serial port communication module 205. The host computer 206 is connected.

[0076] The second power supply module 203 supplies power for the control module 204, the AD acquisition module 202 and the serial port communication module 205, and the control module 204 controls the AD acquisit...

Embodiment 3

[0079] refer to image 3 and Figure 4 , the present embodiment provides a test method for an accelerometer watch core, the accelerometer watch core is tested using the above-mentioned test system for the accelerometer watch core, and the method includes a skewness test method and a degree of freedom test method;

[0080] The skewness testing method includes:

[0081] Step S301, turn off the shift switch;

[0082] Step S302, connecting the accelerometer core to be tested with the core interface module;

[0083] Step S303, controlling the torque generator selection module to select the corresponding torque;

[0084] Step S304, the control module controls the AD acquisition module to acquire skewness values ​​under different torques and sends them to the host computer for display through the serial port communication module.

[0085] The degrees of freedom test method includes:

[0086] Step S401, disconnect the torque converter selection module;

[0087] Step S402, connec...

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Abstract

The invention provides a device, a system and a method for testing an accelerometer meter core. The device comprises a first power supply module, a movement interface module, a circuit interface module, a torquer selection module and a freedom degree test module. The first power supply module is connected with the torquer selection module and the freedom degree test module through the circuit interface module. The meter core interface module is connected with the freedom degree test module and the circuit interface module. The torquer selection module is connected with the circuit interface module. The degree-of-freedom test module comprises a gear shift switch and a degree-of-freedom selection module. The degree-of-freedom selection module comprises n capacitors and n single-pole single-throw switches. One capacitor and one single-pole single-throw switch are connected in series to form a branch circuit, the n branch circuits are connected in parallel and then connected with the gearshift switch, and the gear shift switch is further connected with the movement interface module. Each capacitor of the degree-of-freedom test module is controlled by an independent switch, so that theinfluence caused by interelectrode capacitance in the test process is reduced, and the test accuracy is improved.

Description

technical field [0001] The invention relates to the field of accelerometer core testing, in particular to a testing device, system and method for an accelerometer core. Background technique [0002] Accelerometer core monitoring is an important link in the assembly process of accelerometer core, which can greatly improve the yield rate of accelerometer core assembly. Quartz flexible accelerometer watch core assembly quality inspection items include watch core bias value, scale factor preliminary test, degree of freedom test and other items. With the increasing demand for accelerometers, the existing watch core test methods are becoming more and more It cannot meet the requirements of use, mainly because the individual test data needs to be calculated manually, and the accuracy of data acquisition and display is relatively low; there is inter-electrode capacitance between the gears of the degree of freedom test, which leads to certain errors in the test data. In addition, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 彭福英杨杏敏于皓周峰王晋麟张菁华牛新悦刘超
Owner 航天科工惯性技术有限公司
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