Patent ID: 8531175

Claim:
A monitoring device for an electric power system, comprising: a detection unit having a power module, a current detecting module and a transmission module, wherein the power module includes positive and negative electrodes and is coupled to the current detecting module, the current detecting module includes a first switching unit and a second switching unit, each of the first and second switching units consists of a magnetic reed switch and a resistor connected to the magnetic reed switch in series, the first and second switching units are coupled between the positive and negative electrodes to detect currents on detection points of the electric power system, the transmission module includes a micro-controller unit and a transmission device coupled to the micro-controller unit, the micro-controller unit includes a first end and a second end, the first end is coupled to a node where the magnetic reed switch and the resistor of the first switching unit are connected together to detect switching condition of the first switching unit, and the second end is coupled to a node where the magnetic reed switch and the resistor of the second switching unit are connected together to detect switching condition of the second switching unit; and a display unit coupled to the transmission device for receiving signals from the detection unit.