Method and system for monitoring current-carrying capacity of cable based on distributed optical fiber temperature measuring method

The invention relates to a method and a system for monitoring current-carrying capacity of a cable based on a distributed optical fiber temperature measuring method. The system comprises a laser drive device which is matched with a temperature sensing device in a cable; the temperature sensing device is matched with the corresponding optical fiber splitter; the output end of each optical fiber splitter is connected with one end of the cable; the other end of the cable is connected with a wire distribution cabinet which is matched with demodulating equipment; and the output end of the demodulating equipment is connected with a cable integrated Ethernet chip (IEC) compute server which is output to a client terminal. Combining the distributed optical fiber temperature measuring method, by the method and system provided by the invention, the important parameters of the cable operation can be acquired; the stimulated accuracy is greatly improved through the comprehensive analysis of the current-carrying capacity, thus providing the decision standard for ensuring the safe operation of the city cables and the reasonable configuration of the transmission capacity.