Although the comprehensive pipe corridor could save urban land resources and beautify urban landscape

there were many pipelines in the pipe corridor

and the cause of fire was complex.Among them

the cable fire caused by excessively high temperature in the cable accessory was the most serious.Therefore

it was necessary to design a reliable temperature measurement system for cable accessories and to monitor the temperature of cable terminals or intermediate joints.This paper presented a wireless infrared temperature measuring system for power cable in the comprehensive pipe corridor based on infrared temperature measuring and radio frequency communication technology.This system used STM32 as the development platform

used AM2301 infrared temperature sensor to collect cable temperature

transmitted data of each temperature measuring node to the data management center through ESP8266 wireless module

and finally transferred the data of the management center to the server through RS485 bus

realizing the functions of multi-node temperature collection and wireless data transmission.It was verified by experiments that the measurement error of the temperature monitoring system was within 0.5 K

which could monitor the node temperature in real time

and provide guarantee for the safe operation and fire prevention of power cables in the comprehensive pipe corridor.