Abstract
Based on the review of the development situation of the ETC home and abroad and the ETC key technology, this paper put forward to apply ZigBee network in the freeway ETC system. CC2431 wireless location function is used in the high speed highway ETC system to realize data transmission between network centre node and terminal node safely, which records passing information of the vehicle terminal by the wireless data transmission between the coordinator and vehicle terminal. To improve the position accuracy, a weighted centroid position algorithm is introduced combination the RSSI with centroid position algorithm. The test results of the wireless communication between vehicle terminal and coordinator show that CC2431 wireless position system can realize vehicle omnibearing position and real time monitor in the super-speed highway.
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