As the core sensing device of smart cities, AI induction probes are being widely used in fields such as transportation, security, and environmental protection. Its core technologies include: real - time monitoring of pedestrian flow, traffic flow, and environmental data through multi - sensor fusion technology, and analysis of abnormal behaviors through AI algorithms. For example, after deploying AI induction probes at key intersections in a certain city, the traffic accident rate has been reduced by 20%. The system can automatically identify violations such as running red lights and reverse driving, and cooperate with the traffic police platform for real - time handling. In the field of environmental protection, the probes can monitor air quality and noise pollution, and the data is uploaded to the environmental protection department in real - time to assist in precise governance. In addition, AI induction probes support edge computing, and the local data processing delay is less than 50ms to ensure a rapid response to emergencies. In the future, with the popularization of 5G technology, the probes will achieve more efficient data transmission, promoting smart cities to move towards full - scale perception and intelligent decision - making.