A satellite platform micro-vibration measuring instrument, signal acquisition method, and monitoring system based on analog-to-digital separation.

Abstract

This invention provides a satellite platform micro-vibration measuring instrument, signal acquisition method, and monitoring system based on analog-to-digital separation. The measuring instrument includes: an analog signal conditioning board that receives the raw analog signal output from the sensor, performs signal processing, and outputs a conditioned analog signal; an analog-to-digital converter board that receives the conditioned analog signal and converts it into a digital signal; a digital control board that processes and analyzes the digital signal and transmits it to a satellite computer or storage unit via a communication bus; a digital signal printed circuit board connector; and an analog signal printed circuit board connector. The measuring instrument provided by this invention arranges the digital and analog circuits on different boards and achieves physical separation through stacked connectors. Simultaneously, a metal shielding shell is used to electromagnetically isolate the connectors, significantly reducing crosstalk between digital and analog signals.

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