Intelligent Traffic Detection Technology Based On Magnetic Sensor

As the economic develops rapidly in china, the problem of Road and Traffic become more and more serious.Whether the Transport Sector can solve the problem on Traffic jams and Construct an orderly, optimization of intelligent transportation system get more and more public's attention. And that problem also restricts the development of our economy.we need construct such a intelligent transportation system that can get the traffic information effectly and accurately in real-time.And that system should have the function of forecast,monitoring and provide the information that choose which road should be better. The detection of the vehicle information becomes more and more important in Intelligent Transportation System. Formely we used to use inductive loops to detect the traffic information.But that methold did't only damage the road, and its usage age is also not long.Beside that, the Pavement deformation also affect its accuracy.And we used to use such detection mode that only use single detection in vehicle distinguish.But that arithmetic can't get the result instantaneity, and the acurracy is poor.First, in this article, we build an intelligent Transportation Systerms. This System is based on such a magentic detecor which have two sensors. This System has many functions such as traffic information collection, (for example speed, traffic density, the share of trave time).And this system also can Statistics those traffic data .The system is composed by three layers of framwork.they are DAL, UI and BLL.Second the new mode have the mechanism that can adjust the Base vale automaticly.so its robustness is very perfect.It also can solve the problem that the Base value is uninvalid because the effect of the magnetic field around the detection. Even under such conditions that the threshold is failure.The systerm also can find out the real reasons according the data from the sensor.To address the problem that the datas will become distortion In the process of transmission.This is because the defect of the circuit itself and the influence come from the environment around.so,we use"Wavelet transformation"to solve the problem.According this methold, the noises have been departed from the Signal.So the accuracy of the Algorithm has been improved greatly. Beacuse of the high demand for real-time.So, in this article, we cut the signal into small sections.And do the wavelet transform separately.At last, this article also have list out the communication protocal of the system and the framework of the Software system and introduced the main interface and the function area involved of the systerm.