Tunnel personnel positioning system

The invention discloses a tunnel personnel positioning system which comprises a positioning label, at least four positioning base stations, a server and a video monitoring system. The positioning base stations and the video monitoring system are in communication connection with the server, and the positioning label is used for sending UWB signals to the positioning base stations; the server is used for receiving the timestamps sent by the positioning base stations and determining the positions of the positioning labels according to the coordinates of the positioning base stations and the timestamps; the video monitoring system comprises a video management module and a plurality of cameras, and the video management module is used for monitoring the position of the positioning tag according to the position of the positioning tag sent by the server when an abnormal condition occurs in a video picture shot by the cameras; and the camera is controlled to carry out follow-up video picture display and follow-up phot