Highway tunnel is different from other open highway environments, its closed traffic environment and linear structure, if fire hazards occur, if not contained in time, it is very easy to cause a big fire, threatening the traffic safety of vehicles in the highway, serious will also cause traffic accidents, causing incalculable loss of personnel and property. Therefore, it is necessary to find out the hidden danger of tunnel fire in time and nip the fire in the bud to ensure the safety of tunnel and reduce the loss of personnel and property.

Equipped with infrared thermal camera, the fire robot can find the hidden fire danger in time even in the dim tunnel environment, and can timely and accurately locate the fire source position. Through the automatic fire extinguishing system inside the interlocking fire robot, the fire source position can be accurately extinguished in time to curb the occurrence of fire.

Infrared thermal camera is passive infrared imaging. In nature, everything above absolute zero (-273.16 Degrees Celsius) is constantly radiating infrared radiation, a phenomenon known as thermal radiation. Infrared ray is a kind of light wave invisible to human eyes, no matter day or night, the object will radiate infrared ray, but infrared ray no matter strong or weak, people can not see. Infrared thermal camera is using the infrared detector, optical imaging lens receives the infrared radiation signal of the measured target, after infrared optical system of infrared detector using electronic scanning circuit on photosensitive source analyte in a sample of the infrared thermal image scanned into electrical signal, after amplification processing, conversion, or standard video signal through the television screen or monitor display infrared thermal images. An instrument made of this principle is an infrared thermal camera. It produces a thermal image by detecting tiny temperature differences.

The fire robot equipped with infrared thermal camera can realize the tunnel fire detection and location through intelligent algorithm, which has high accuracy and reliability.