基于磁阻效应的矿井杂散电流检测系统

针对杂散电流对煤矿安全生产带来严重威胁的问题,提出了一种基于磁阻效应的矿井杂散电流检测系统,介绍了系统检测原理,设计了检测电路和传感器外围电路,并进行了实验。实验结果表明,该系统可以准确稳定地测量杂散电流,电流的检测精度基本满足检测需求,且非接触式的检测系统安全可靠,对矿井杂散电流的防治具有十分重要的现实意义。

Detection system of stray currents in coal mine based on magnetoresistance effects

In view of problem that stray currents generate serious threat to safety production of coal mine,the paper proposed detection system of stray currents in coal mine based on magnetoresistance effects.It introduced detection principle of the system,designed detection circuit and sensor peripheral circuit,and completed experiment.The experimental result shows that the system can measure stray current accurately and stably,current detection accuracy basically meets detection requirements and the non-contact method is safe and reliable.The proposed system has great practical significance for mine stray current control.