A Spacecraft Ground Environmental Test System Based on Optical Fiber Sensing

Abstract

The application provides a spacecraft ground environment test system based on optical fiber sensing, including a control unit, a demodulation unit and a sensing unit; the sensing unit is fixed on the spacecraft; the sensing unit includes a plurality of FBG sensors; the sensing unit The unit is connected to the demodulation unit through the first data transmission line; the demodulation unit is connected to the control unit through the second data transmission line; the control unit is configured to send a test command signal to the demodulation unit; the demodulation unit is configured to receive Test the instruction signal, and sample the information collected by the sensing unit to obtain a spectral signal, convert the spectral signal into an electrical signal and send it to the control unit through the second data transmission line; the control unit is also configured to perform the received electrical signal Data processing, and classification, storage and display of raw data and processed data according to preset conditions. The application can realize multi-parameter integrated testing, and the testing system flow is simple.

Description

technical field [0001] The present application relates to the technical field of spacecraft ground environment testing, in particular to a spacecraft ground testing system based on optical fiber sensing. Background technique [0002] In the development of spacecraft, it is necessary to conduct large-scale test analysis and monitoring of various state parameters and environmental parameters of the spacecraft, such as structural parameters such as acceleration, strain, displacement, and deformation, and environmental parameters such as temperature, pressure, and gas composition. Whether the status and performance of the detector meet the requirements for development and in-orbit operation. [0003] At present, the parameter test and analysis of each stage of the whole process of the satellite is carried out independently using various special test instruments and equipment, and before the test work of different stages is carried out, it is necessary to carry out satellite stat...

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Problems solved by technology

[0003] At present, the parameter test and analysis of each stage of the whole process of the satellite is carried out independently using various special test instruments and equipment, and before the test work of different stages is carried out, it is necessary to carry out satellite state design and modification, a large number of sensor layout and installation, and test system construction and debugging. etc., resulting in complex test process and long test preparation time, which affects the development cycle of satellites; moreover, the types of parameters tested at each stage are limited to varying degrees, making it difficult to interpret all parameters of satellite status, which affects satellite status and performance. Integrity of Monitoring and Analytical Assessment

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