Anti-interference Performance of the Temperature Acquisition System for the Vacuum Thermal Test

Abstract The thermal test temperature acquisition system is one of the core systems in spacecraft. It uses thermocouple sensors for data acquisition, and its stability directly affects success or failure task. equipment types original environment were single, electromagnetic compatibility design was weak. With increase test, interference becoming more serious even collection. Based on principle measurement compatibility, this paper establishes relevant models analysis simulation obtains methods to improve under different conditions. And a certain using results model, corresponding circuit improvement carried out, which finally reduced influence ensured smooth progress