Based On Zigbee Technology Do Not Stop The Charges Of Vehicle Equipment Design

Presently, in Electronic Toll Collection(ETC) system, the main types of working frequency of radio frequency(RF) identification used in On-Board Equipment(OBE) are 902~928MHz, 2.45GHz and 5.8GHz. However, the OBE are usually incompatible and high costing. So developing more competitive OBE has important applied value. In this paper, a new solution project of OBE is put forward based on the emerging ZigBee technique.This paper proposes a detailed solution project of OBE based on ZigBee technique and ETC system. First, the hardware platform is structured by the CC2430 which is integrated with wireless transceiver and microcontroller. In order to select the appropriate antenna of OBE, testing is given to compare the signal strength and link quality of different antennas. Then, referring to the free protocol stack provided by TI, the tree network topology and application-layer frame structure are designed based on the characteristics of ETC system, and they can complete the wireless communication of Road-Side Equipment (RSE). Finally, this paper program the driving of different components and realize the function of OBE.For the problem of vehicle speed when cars get across the toll booths, this paper takes tests in the aspects of the time required to join the network, data transmission capacity and the time of completing the payment process. Testing results show that it can realize the payment when the speed of vehicle passing the toll booths is lower than 50km / h.The testing results show that the solution project of OBE studied in this paper can meet the requirement of ETC system and has a bright application prospects.