Design of long-distance transmission circuit of high precision micro-seismic signals for mines

Abstract

This paper presents a long distance transmission circuit of high precision micro-seismic signals for mines. This circuit implements current loop and isolation gate to improve the precision of mine micro-seismic signal acquisition and data quality. The test result shows that the transmission circuit can transmit micro-seismic signal for 10km in real time and the dynamic range of the circuit is 77dB.The circuit demonstrates low power consumption and high precision capability.