The Implement And Design Of The Traffic Data Collection Device

The road traffic information collection can supply the traffic basic data for the road layout,maintain,management department, know the traffic data,traffic stream distribution,vehicle speed and so on throw the oftentimes,termly,without day inquiry. With the implement of traffic department"Gold Week"road traffic data statistical system and the requirement of traffic layout department, the traffic check point and the distance will more. So it is very signification to develop the intelligent, automotive traffic information collection device. It cay replace the manual collection, save the manpower. At same time it improve the exactitude of statistic and avoid the subjectivity of vehicle type in the manual.The traffic information collection device connect to the data center of traffic department by the GPRS, publish the data in web. That produce a road traffic information statistic system faced the Internet. It is an innovation in the traffic. It is another application that the newest electronics technology and Internet used in the traffic field. To GPRS replace the wire, it save the money which lay a lot of wire. This system belong to the ITS. So first the article introduce the development of ITS and the application status in the world, explain the signification of task; Then introduce the whole structure of the road traffic information statistical system base the internet, the functional brief introduction of the sub module; describe the design of traffic information collection device include the principle of the detection, select of the sensor, the application of the embedded system in the control module. It is important in the article the implement of the control module software in the traffic information collection device. The software module is divided by the function. It show the serial communication of IEC TC57/5, and realize the wireless communication by the GPRS include the TCP/IP communication. At the last, the article says some ways in the reliability of the device. Some ways are used in the software in order to the reliability of transport.The traffic information collection device in the article already got the application in the Tianjin city, Shandong province, Zhejiang province, Jiangsu province . That is feasibility of the project.