Sensor signal acquisition device with 4-20mA output

The utility model discloses a 4-20mA output sensor signal acquisition device, and relates to the field of sensor signal acquisition. The system comprises an analog signal acquisition conditioning module, an A/D conversion module, a single-chip microcomputer processing module and a communication module which are connected in sequence. The analog signal acquisition conditioning module adopts at least one sensor input channel; wherein the sensor converts acquired physical quantity into 4-20mA current, and the analog signal acquisition and conditioning module is used for converting a current signal transmitted by the sensor into a voltage signal through an I/V circuit and inputting an analog signal into the A/D conversion module after RC filtering and conditioning; the A/D conversion module isused for converting the analog signal into a digital signal and transmitting the digital signal to the single-chip microcomputer processing module; the single-chip microcomputer processing module isused for analyzing and pro