摘要
载人航天器设置双端模拟信号采集通道实现对模拟量信号的差分采集。其优势是避免信号的共模噪声干扰,提高信号采集的准确性。文章对于载人航天器的模拟量差分采集电路进行了简要介绍,结合实际应用过程中并网控制器模拟信号采集出现的特殊现象,提出了信号采集的接口约束条件,保证了模拟量采集电路的安全性。
A dual-end analog signal acquisition channel is used in manned spacecraft to carry out the differential signal acquisition and to avoid the common mode interference.This paper discusses the acquisition circuit of manned spacecraft,and the special phenomenon due to the parallel power connection.Finally,the constraint conditions of signal acquisition are established to ensure the safety of analog signal acquisition circuit.
出处
《航天器环境工程》
2011年第6期545-550,共6页
Spacecraft Environment Engineering
基金
国家重大科技专项工程
关键词
载人航天器
浮地信号
接口电路
信号采集
manned spacecraft
float grounding signal
interface circuit
signal acquisition