Along with the increase in vehicles and the rapid development of transport, road traffic management and control of traffic demand for more and more information. Traffic information collection is use the vehicle detector to achieve, vehicle detector according to different technologies used in the main coil is divided into many species.
According to the current applied situation of the traffic information collection, this paper introduces a loop detector system which is based on micro-controller, and analyzes the structure and function of this system. The principal part of the hard ware in this sys tem is chiefly controlled by AT89S52, this system realizes the dynamic traffic information collection, and the collected data reflect the pass or existence condition of the vehicles real- timely. This system is simple, and is easy to operate it can detect vehicles precisely, and can be used in the highway traffic flow detection and the road security system.
