| As modern society increasingly dependent on transport, traffic control system, more and more widespread attention, while the use of advanced information technology, communication technology and control technology and other high-tech development of the transport system can significantly improve the operation of transport networks efficiency, solve traffic congestion problems as the most economical, one of the most effective way.In this paper, urban traffic control as the research object to the basic theory of traffic engineering, combined with application of current microprocessor technology, the traffic signal control system analysis and research on traffic signal control system of basic functions are described , introduced to the AT89C58 microprocessor control chip that integrates DS12C887, TL16C554 peripheral chips such as traffic signal control system, given the system's hardware structure and software design process analysis. The system uses a modular design for easy cutting and expansion capabilities.The traffic signal control system, a modular chassis design, coordinated control of multi-CPU hardware and software watchdog technique, RTOS operating system can work under harsh conditions, the use of Chinese LCD debug interface, intuitive operation and convenient debugging. Junction with the machine, the remote network parameter setting, operation mode switching control, on-line center when the executable instructions, stand-alone can be run locally adaptive control, clock and phase can be established based on green wave, can be coordinated control center.The system features an RS232 switch TCP / IP module for remote transmission of information traffic flow, with extensive coverage, implementation method is simple and flexible control features. The signal control system easier and more effective, to improve traffic order for the achievement, increase the traffic capacity of existing transport facilities, the purpose of reducing traffic accidents is important. |
PDF Full Text Request