Sensing circuit, sensing device and monitoring system for power transmission lines

A sensing circuit, mounted in a sensing device for a power transmission line, comprising:

• a plurality of induction power sources;
• a solar photovoltaic module;
• a protection circuit, electrically connected to the induction power sources for avoiding a damage caused by a spike voltage, lightning, or an overcurrent situation;
• a first filter, electrically connected to the protection circuit and filtering an output electrical energy of the induction power sources;
• a second filter, electrically connected to the solar photovoltaic module and filtering an output electrical energy of the solar photovoltaic module;
• a power control unit, electrically connected to the first filter and the second filter and controlling the electrical energy provided to the sensing circuit;
• a first battery, electrically connected to the power control unit and being a first backup power source;
• a second battery, electrically connected to the power control unit and being a second backup power source;
• a first charger, electrically connected to the first filter and the first battery and charging the first battery;
• a second charger, electrically connected to the second filter and the second battery and charging the second battery;
• a central processing unit, electrically connected to the power control unit, controlling the sensing circuit and executing computations thereof;
• a video recording module, electrically connected to the central processing unit, generating a plurality of image signals and transmitting the image signals to the central processing unit;
• a sensor module, electrically connected to the central processing unit, generating a plurality of sensing signals and parameters data, and transmitting the sensing signals and parameters data to the central processing unit;
• a wireless communication module, electrically connected to the central processing unit, converting the signals from the central processing unit into wireless signals;
• and
• an antenna, electrically connected to the wireless communication module for transmitting the wireless signals.

A monitoring system for power transmission line comprising:

• a plurality of sensing devices for power transmission line, wherein each of the sensing devices comprises a sensing circuit, and is defined on a power transmission line between two transmission towers, each sensing device for power transmission line detects a plurality of parameters data and a plurality of image signals;
• a plurality of gateway units, wherein each gateway unit receives a part of wireless signals transmitted from the sensing devices for power transmission line;
• a remote monitoring center, wirelessly communicating with the gateway units, a plurality of wireless communication signals transmitted between the gateways and the remote monitoring center;
• and
• a database, defined in the remote monitoring center, recording and storing the parameters data, the image signals and real-time data of the power transmission lines detected by the sensing device for power transmission line.