Real-time testing system and method for speed and relative position of vehicle on expressway

Abstract

The invention relates to a speed and relative position real time measuring system and method for the vehicles on highway. The system contains passive response device that contains unique radio frequency identification code that could show the location of itself, reader that is set on vehicle to send active signal and receive radio frequency information and take data exchange with server through wireless communication network, server that receives the radio frequency and takes analysis and process to gain the real time information and sends back to reader. The method also relates to the method to test the speed and relative position on highway by the device. It has the advantages of high accuracy and low cost, and needs not to be maintained.

Description

technical field [0001] The invention belongs to the field of intelligent transportation systems, in particular to the application of RFID (Radio Frequency Identification) in highway safety management. Background technique [0002] The construction and development of the expressway network plays a very important role in the development of our country to increase productivity and enhance the international competitiveness in the context of economic globalization. In the long run, it will also have an important impact on the modernization of the Chinese people's way of life. [0003] In recent years, my country's expressways have developed vigorously, increasing at a rate of several thousand kilometers every year. As an important strategic resource of the country, the expressway has a good alignment, smooth road surface, and no interference from level crossings and slow vehicles. It not only improves transportation efficiency, but also reduces vehicle loss. Its advantages are v...

AI Technical Summary

Problems solved by technology

[0024] In the actual application of the above two patents or patent applications, the distance between the detectors is generally set at 100 meters or more, and the measurement of the real-time position and speed of the vehicle cannot be accurately detected, and if the detector If the spacing is set up very close, it is bound to greatly increase the operating cost of the system and reduce the reliability of the entire system

In addition, both of these two detection systems need to install circuit modules with active devices such as microprocessors on the highway, which is difficult to meet the performance requirements of high reliability, and there are also problems in system maintenance

Therefore, the above-mentioned patents or patent applications have technical problems in terms of road management, comprehensive identification of information on each vehicle, etc.

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