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Accelerometer low-pressure performance testing device and testing method

A technology of accelerometer and testing device, applied in speed/acceleration/shock measurement, testing/calibration of speed/acceleration/shock measuring equipment, measuring device, etc., to achieve the effect of accurate data and reasonable angle setting

Pending Publication Date: 2021-10-26
CHONGQING HUAYU ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem in the prior art that measuring the performance parameters of the accelerometer under standard atmospheric pressure cannot truly reflect the relationship between its performance parameters and air pressure under different air pressures, providing An accelerometer low-pressure performance test device and its test method can truly reflect the performance of the accelerometer under different air pressures, provide important support for the research on the environmental adaptability of the accelerometer, and have a positive impact on the application of the accelerometer in aviation and aerospace. larger meaning

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  • Accelerometer low-pressure performance testing device and testing method
  • Accelerometer low-pressure performance testing device and testing method
  • Accelerometer low-pressure performance testing device and testing method

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Embodiment

[0025] see figure 1 , an accelerometer low-pressure performance testing device, comprising a test box 1 , an end-tooth indexing head 2 , a vacuum pump 3 , an accelerometer to be measured, and a collection and testing system 5 . One side of the test box 1 is open, and a box cover is provided on the open side. In specific implementation, one of the vertical sides of the test box 1 is open, and a sealing strip around the open side of the test box 1 is arranged between the box cover and the test box 1 , so that when the cover is closed on the test box 1 The test box 1 can be sealed, the air tightness requirements of the test box 1 can be better ensured, and the test data can be accurate. The test box 1 is connected with the output shaft of the end-tooth indexing head 2 and can rotate synchronously under the driving of the end-tooth indexing head 2 . In specific implementation, a blind hole is opened on the side opposite to the open side of the test box 1, and a mounting protrusi...

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Abstract

The invention discloses an accelerometer low-pressure performance testing device and testing method. The testing device comprises a testing box, an end tooth dividing head, a vacuum pump and an acquisition testing system; an opening is formed in one side of the testing box, and a box cover is arranged at an opening; the testing box is connected with an output shaft of the end tooth dividing head and can synchronously rotate along with the end tooth dividing head; an accelerometer mounting seat and a pressure gauge are arranged in the testing box; the vacuum pump is communicated with the testing box through a pipeline and monitors a pressure value in the testing box through the pressure gauge; and the acquisition test system is respectively connected with the end tooth dividing head and the testing box, and is used for controlling the rotation of the end tooth dividing head and acquiring and analyzing the related data of the testing box measured by the acquisition test system. The device and method can truly reflect the performance of the accelerometer under different air pressures, provide important support for the environmental adaptability research of the accelerometer, and are of great significance to the application of the accelerometer in aviation and spaceflight.

Description

technical field [0001] The invention relates to the technical field of accelerometers, in particular to an accelerometer low pressure performance testing device and a testing method thereof. Background technique [0002] Quartz flexible accelerometer is used to measure the acceleration information of the carrier and is one of the core devices of the inertial navigation system. Quartz flexible accelerometers are widely used in aerospace and other high-precision applications due to their simple structure, small size, and high measurement accuracy. [0003] When the inertial system is used in plateau and aviation and aerospace, the actual ambient air pressure conditions will be different, and the use environment of the accelerometer installed inside will also be different. With the continuous improvement of system environmental adaptability requirements, it has more clear and specific requirements for the accuracy of sensors (including accelerometers, gyroscopes and other elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00G01L11/00
CPCG01P21/00G01L11/00
Inventor 方伟梁文科陈邦力曹强阎文龙
Owner CHONGQING HUAYU ELECTRIC GRP
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