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交通流模型中常见的参数有行驶时间、车速(平均车速或瞬时车速)、车流量与车辆密度。这些参数在智能交通系统的应用中起着重要的作用。借助精准的交通参数,驾驶员可正确地选择便捷的行驶方式与更快的行车路径。本文主要介绍了交通流模型的基本原理、基于新一代无线定位技术(5.8GHz)车速检测的方法与应用、以及无线定位技术在交通流模型中的其他应用方式。5.8GHZ频段信号广泛应用在高速公路电子不停车收费领域中,利用5.8GHz的无线定位技术,路侧单元可对装有车载器的车辆进行精确定位并准确检测与估计该车车速。先进的无线定位技术为未来智能交通系统发展奠定了坚实的技术基础。
Traffic flow model common parameters are driving time, speed (average speed or instantaneous speed), traffic volume and vehicle density. These parameters play an important role in the application of intelligent transportation system. With precise traffic parameters, drivers can choose the convenient driving style and the faster driving route correctly. This paper mainly introduces the basic principle of traffic flow model, the method and application of vehicle speed detection based on the new generation of wireless location technology (5.8GHz) and other applications of wireless location technology in traffic flow model. 5.8GHZ band signal is widely used in highway electronic toll collection area, the use of 5.8GHz wireless positioning technology, roadside unit can be equipped with vehicle-mounted vehicles to accurately locate and accurately detect and estimate the car speed. Advanced wireless location technology for the future development of intelligent transportation system has laid a solid technical foundation.