Intelligent Traffic Signal Controller

With the modern society increasingly dependent on transportation, traffic control system has been gaining widespread attention. And the use of advanced information technology, communications technology and control technology, and other high-tech development of the intelligent transport system will greatly increase the efficiency of the transport network, to solve the traffic congestion problems are most economic, one of the most effective ways.Based on the traffic signal control at home and abroad for development trend and requirements analysis, advanced signal control from the design concept, in light of China's actual demand for transport needs, we develop a new type of intelligent traffic signal control aircraft. Against high system reliability, high security requirements, to meet the system requirements premise, products, cost-effective as the guiding ideology, the modular design of the system, the system is flexible control capability to meet the different sizes of the junctionThis paper products company to the ATMEL AVR Microcontroller series designed as a system in the ATmega64 implementation of the underlying control modules, manual control unit, intelligent power supply, drive and monitor the realization phase, the phase of the current detection, manual control, and intelligent power supply on the strong safety, the two control points using Digi Division against global embedded control, communications and Ethernet connectivity market development of high-performance 8-bit microprocessor Rabbit 3200, together with long-term use by the industry-proven Dynamic C software development system, the system is the hardware design and software flow analysis.The system is modular in design, ease of cutting and expansion capabilities. Ethernet, RS232 and RS485 communication standard, and can be updated with remote control .It has covered a wide range of methods to achieve simple, flexible control features. The system supports a Single-crossing to Multi-junction regional control, and to control a variety of ways, with adaptive control algorithm, the real-time traffic control with a security protection mechanisms, can detect errors, the implementation of demotion, yellow flash, Reset, power protection; real-time log files, comprehensive report on the traffic control and running, the lights on the control easier, and more effective control.The system is the transport system in the infrastructure, its intelligent is important,basic significance for the realization of traffic control, intelligent management system upgrade, in order to better improve traffic order and increase the existing capacity of transportation facilities, with the purpose of reducing traffic accidents.