Wireless monitoring system of vehicle overspeed on freeway based on GPRS

Vehicle overspeed is an important reason for the traffic accident on the freeway and it is helpful and necessary to monitor the peccancy behavior of over speed. In this paper, design method of the overspeed wireless monitoring system based on GPRS (general packet radio system) is discussed, and the configuration of its hardware and software is introduced. The whole system consists of the subsystems of the vehicle overspeed monitoring stations that are distributed on the freeway and the remote control center. As the over speed action is detected, two images will be captured, analyzed and processed. Then the information of the overspeed vehiclepsila speed, peccancy time, peccancy place serial number, compressed image and etc, will be written to the wireless modem of Motorola G20 through the serial interface and sent to the remote monitoring center through the GPRS network and the GGSN gateway. The remote control center is responsible for data displaying and saving. Integrating the technologies of sensor, number plate recognition and GPRS, the whole monitoring system stands up the trend of vehicle overspeed surveillance on freeway. The design and application of the new type of vehicle overspeed monitoring system will undoubtedly improve the automatic and intelligent management on freeway.