检测电缆故障点的电磁传感器设计与实现

Design and Implementation of the Electromagnetic Sensor for the Cable Fault Detection

电磁传感器是根据电磁感应原理用于检测电磁信号的。在精确检测电缆故障点时,根据故障点产生的磁场变化,电磁传感器拾取到这种变化的磁场信号,并将其转换成感应电压,感应电压经放大、整流处理后,用于后续检测指示电路,最后确定故障点的位置。

lectromagnetic cording to the duced voltage An electromagnetic sensor is designed according to the principle of electromagnetic induction for e- signals detection. The electromagnetic sensor can pickup the change of the magnetic field signal ac- changing magnetic field generated by the fault point, and converts it into the induced voltage. The in- is amplified and rectified and then fed into the follow-up testing and indicating circuit to determine the location of the fault point.