飞机微小电压信号采集电路设计与验证

The design and verification of tiny voltage signal acquisition circuit in aircraft

针对飞机上的微小电压信号采集精度偏低且在机上容易受干扰的现状,设计一种基于射频滤波器及仪表运算放大器的高精度微小电压信号采集电路,介绍了电路的拓扑形式、各功能电路的作用,阐述了各部分的设计要点,通过实物测试数据验证了电路的采集精度。

For the fact that the tiny voltage signal acquisition accuracy in the aircraft is low and it is susceptible to interference on the aircraft, a high-precision tiny voltage signal acquisition circuit based on RF filters and instrumentation operational amplifiers is designed. The topology of the circuit and the function of each part is described, and the accuracy of the circuit is verified through physical test data.