The Development of High-Precision & High-Speed Synchronous Data Acquisition System in Vacuum-Thermal Test

Abstract

The Vacuum-Thermal test is an important test to verify the correctness of the thermal design and ensure its long-term reliable operation during the development of the spacecraft. At present, the temperature measurement in the Vacuum-Thermal Test mostly adopts the serial mode to complete the data acquisition of the large data volume temperature sensor. This method balances performance and costs well. However, in some special circumstances, it cannot accurately reflect the instantaneous temperature of the test piece. Aiming at this problem, a high-precision and high-speed fully parallel data acquisition system is designed. Based on the accuracy of the original temperature data acquisition, high-speed synchronization technology is used to accurately acquire the transient temperature data of the spacecraft to verify the transient heat of the spacecraft. Features provide a data foundation.