Lightning current detecting device

The invention discloses a lightning current detecting device which comprises a signal conditioning unit, an energy taking unit and a collecting unit. The lightning current detecting device can directly use lightning stroke energy on overhead transmission lines or lightning conductors, and the lightning stroke energy can be coupled by an energy taking coil to obtain power finally. Monitoring equipment can be driven without external power supply to provide energy. The lightning current detecting device can guarantee stable, continuous and real-time monitoring for a long time without taking the situation where the lighting stroke cannot be monitored due to the fact that external power is insufficient to cause equipment failure into consideration. The lightning current detecting device can accurately record time, amplitude and polarity of the lightning stroke. The lightning current detecting device removes a special trigger circuit and has the advantages of being high in accuracy, simple in structure, small in size, low in cost, high in safety and the like. In addition, the lightning current detecting device has the advantages of being simple in structure, small in size, light in weight, capable of taking energy conveniently, convenient to install, flexible to adjustable and the like.