Research on high precision fire detection and location method in traffic tunnel

In order to solve the problem of tunnel orbital automatic fire extinguishing system, this paper through the use of various detector principle, accuracy, reliability of comparative analysis and real test, puts forward using three wavelength flame detector interval detection + multispectral image fire detector fire detection combination scheme to quickly detect fire, and identify the image fire center position, through the camera calibration, parallax calculation, coordinate conversion algorithm will fire point pixel coordinates into tunnel three-dimensional coordinates, guide the corresponding interval of the fire extinguishing robot quickly move to the fire and control the telescopic arm orientation. The fire source detection and positioning method is economical, reliable and accurate, which can help the robot to locate static / dynamic fire sources and quickly extinguish, reducing the impact of fire diffusion.