The Intelligent Signal Light Control System Based On RFID And ZigBee

With the development of the economic and technological, the level of traffic control system is more and more higher. Intelligent Transportation System(ITS) uses the advanced information, the communication technology and the control technology, it has played a significant role in increasing the rate of traffic network and solving the traffic congestion.The main topic of this paper is The Intelligent Signal Light Control System based on RFID and ZigBee.For real-time collecting.transmitting and handing the traffic information is the key technology of the intelligent transportation system. This paper uses the wireless RFID testing way, transmits traffic information by ZigBee, processes the traffic information and builds the fuzzy control scheme.In the process for handing traffic information, at the first system fused the senor data through the data fusion approach that is the most excellent integration and least squares, achieved good results;forecasts short-term traffic flow data information by least squares regression support vector machine learn in theory, the traffic flow can be better an next time.In the process for data transmission, this paper introduces the wireless technology ZigBee, which achieves the short-distance data transmission through the wireless network and joins in the existing wired network, achieves section communications of the control center and the intersection of road and traffic detector control unit.For the nonlinear, time delay and uncertainty of the road traffic system, this paper uses fuzzy theory to achieve the Crossroads Control. To simply the problem, Input/Output variables have the same size and shape of membership functions. To improve the sensitivity of the output, a modified algorithm of membership functions is also introduced. Experimental results show that fuzzy control can play its unique performance only when the plenty of vehicles and faster speed, comparing the static timing control with fuzzy control.