Design and implementation of visual precision positioning system for substation camera

Aiming at the problem of large deviation and inaccurate positioning of substation camera manual positioning, the positioning system is designed by combining laser ranging and video image technology. The device is equipped with a lifting structure, a laser sensor, and a multi-functional interface. The 'measurement-visualization' verification is realized by real-time linkage of coordinate data and camera screen through a flat panel display. Based on the three-dimensional laser point cloud, the geographic space model of substation is built, and the camera parameters are calibrated by BP network, and the coordinate transformation matrix is built. The system adapts to multiple scenarios, the positioning deviation is small, the repeated construction rate is greatly reduced, and the positioning efficiency and applicability are improved.