Energy-saving system and method for electrified supporting body with signal line

The energy-saving system comprises a main control module, an operation control module, a communication module, terminal equipment, the power supply supporting body, a signal feedback line, a terminalinformation acquisition device and a main platform system, wherein the main control module is externally connected with power supply connection equipment; wherein the main control module, the operation control module and the terminal equipment are connected in sequence through the power supply supporting body; the operation control module is connected with the terminal information acquisition device through a signal feedback line; and the main control module is in communication connection with the main platform system through the communication module to realize remote power supply on-off control of the terminal equipment. The electrified supporting body with the signal lines can have different solutions according to different application requirements and scenes, power transmission and signal transmission at a cert