Design of general detection circuit for analog signal of equipment electrical and electronic system

Aiming at the requirement of analog signal detection in electrical and electronic system detection equipment, a universal analog signal detection circuit is designed in this paper. Through the analysis of signal type, range, precision, frequency range and other parameters, select the appropriate sensor, amplifier, filter, ADC and other components, complete the design of voltage acquisition circuit, current acquisition circuit, resistance acquisition circuit, MCU circuit and communication circuit.