Power transmission line photonics-electronics converged long-distance monitoring device and method

A photoelectric fusion long-distance monitoring device for a power transmission line, installed on a tower, comprising:

• an optical fiber grating demodulation circuit, a convergence circuit, an electro-optical converter, and an edge calculation and signal return circuit,
• wherein the optical fiber grating demodulation circuit is connected to the edge calculation and signal return circuit and optical fiber grating sensors of different channels on the power transmission line, and the optical fiber grating demodulation circuit is configured to transmit a laser signal to the optical fiber grating sensors, receive first optical signals returned from the optical fiber grating sensors, demodulate the first optical signals, and output the demodulated first optical signals to the edge calculation and signal return circuit;
• the convergence circuit is connected to the electro-optical converter, and the convergence circuit is configured to receive sensing data of other monitoring devices on the power transmission line other than the optical fiber grating sensors, converge the sensing data, and output the converged sensing data to the electro-optical converter;
• the electro-optical converter is connected to the edge calculation and signal return circuit, and the electro-optical converter is configured to receive the converged sensing data, convert the converged sensing data into a second optical signal, and output the second optical signal to the edge calculation and signal return circuit;
• and
• the edge calculation and signal return circuit is connected to a monitoring master station, and the edge calculation and signal return circuit is configured to calculate, encode and process the demodulated first optical signals and the second optical signal to obtain an encoded communication optical signal, and return the encoded communication optical signal to the monitoring master station.