Title：MCU to complete the traffic light control system design and implementation of ABSTRACT Traffic controllers system is a modern society with the logistics, travel and other transportation development of a unique set of public management systems. To ensure safe and efficient traffic order, in addition to the development of a series of traffic rules, they must have a certain scientific and technological means to achieve. In this paper, the current traffic control for in-depth analysis, based on the use of detection sensors, real-time adjustment to achieve intelligent control technology, sensor monitoring, real-time adjustments to traffic control algorithm and the role of single-chip combination is proposed based on microcontroller traffic control system design. 8051 traffic light control system consists of 8051, traffic lights display, LED countdown, traffic detection and adjustment, compliance testing, emergency handling, time mode manual settings module. In addition to basic traffic light system functions, but also with the passage of time manually, you can countdown show, forced through the emergency vehicle, traffic detection and adjustment, identification and handling of traffic anomalies and other related functions. The system is able to prove the theory is simple, economical and effective way to ease traffic, improve traffic intersection traffic capacity. This design made the following main aspects: First, determine the overall traffic control system design, including, forbidding the passage of specific intersection design and various functions of the system should have, and second, the hardware circuit for the sensor, display circuit design and basic functional requirements. Third, the software system design for this system, I used the MCU assembly language, the overall completion of the software was written.
