The people's police shoulder the responsibility of cracking down on illegal crimes and maintaining social stability, and they are an important force in guaranteeing urban safety. In the face of some emergencies in smart cities, such as terrorist activities, gatherings to fight, cult activities, anti-smuggling, security protection for major conferences/events, etc. In order to effectively prevent, control and handle emergencies in a timely manner, and effectively protect the lives and property of the people, timely grasp of information on a site plays a vital role in improving rapid response and emergency response capabilities. In the face of various emergencies, on-site commanders can use the remote wifi image transmission module wireless communication to transmit the audio and video signals of the front personnel back in real time, and respond quickly.
Smart city Wi-Fi coverage program, regional coverage key deployment control command system fixed station nodes are deployed at the commanding heights or relatively high points of urban buildings. In the case of building occlusion, they can effectively form a self-contained network with vehicle-mounted stations and handling individual nodes, interconnecting, and building one Zhang's "three-dimensional" wireless broadband network can meet the on-site emergency communication needs of "Quiet in Quietness" and "Communication in Motion". The images collected by the police force at the scene of an emergency can be relayed back to the rear command center at a time through a relay method to conduct unified command and dispatch of the police force at the scene.