Mini Inductive Loop Vehicle Detection Sensor

Intelligent Transportation System (ITS) is a valid approach to solve the increasing transportation issue in cities and in highways. Vehicle detection is one of the key technologies in ITS. The ITS collects and processes traffic data (vehicle flow, vehicular speed, vehicle density and occupancy ratios) from vehicle detection sensors buried under the road or installed along the road. Inductive loop detector as one type of the vehicle detector is applied extensively, with the characters of stability, high value to cost ratio and feasibility. On the other hand, most of the existing inductive loop vehicle detection sensors have some weak points such as friability of large detective loop, huge engineering for setting and traffic interruption during installing the sensor. The design and reality of a new inductive loop vehicle detection sensor is presented against these weak points existing now. The new sensor is more feasible with miniature inductive loop, easy maintenance and installation, and intelligent controller. The new sensor can detect vehicle signals effectively proved by the experiment.