Microgravity testing device based on quartz flexible accelerometer

A technology of accelerometer and testing device, which is applied in the direction of measuring device, gravitational field measurement, geophysical measurement, etc. It can solve the problems of small range of microgravity measuring device, lower accuracy of accelerometer, and low data reliability, so as to achieve real-time processing , mechanical noise reduction, damping reduction effect
CN102778700AActive Publication Date: 2012-11-14航天科工惯性技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
航天科工惯性技术有限公司
Publication Date
2012-11-14

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Abstract

The invention discloses a microgravity testing device based on a quartz flexible accelerometer. The microgravity testing device comprises a quartz flexible accelerometer assembly, a sampling circuit, a filter circuit, a gating circuit, an analog / digital (A / D) conversion circuit, a communication interface circuit and a field programmable gate array (FPGA) controller. The quartz flexible accelerometer assembly comprises the quartz flexible accelerometer and a temperature control system which comprises a temperature control circuit, a heating element, a heat preservation cover, an installation base body and a base. The microgravity testing device based on the quartz flexible accelerometer has the advantages of being low in noise, large in range, wide in transmission band, and capable of avoiding data loss caused by frame dropping, frame emptying, frame repetition, error codes and the like, and improving reliability of data.
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Description

technical field

[0001] The invention relates to a microgravity test device, in particular to a microgravity test device based on a quartz flexible accelerometer, which belongs to the technical field of space microgravity measurement. Background technique

[0002] The microgravity acceleration on space vehicles includes quasi-steady-state acceleration, transient acceleration and vibration acceleration. 1) Quasi-steady-state acceleration: the change frequency is not more than 0.01Hz, generally not more than 10 -6 g. The main causes of quasi-steady-state acceleration are atmospheric resistance, tidal force, solar radiation pressure, etc.; 2) Transient acceleration: the value of transient acceleration is generally within 10 -4 g. The main causes of transient acceleration include spacecraft orbit change thrust, orbit control and attitude control thrust, spacecraft auxiliary equipment and payload actions, astronaut activities, etc.; 3) Vibration acceleration: the value of vibrati...

Claims

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