门路交通旗子暗记灯把持系统的事理及构成(国外英文资料).docVIP

道路交通信号灯控制系统的原理及组成(国外英文资料) The principle and composition of the control system for road traffic signals Believe everyone has such a sense, passing through an intersection or tee junction, the above Settings command to the traffic light at the north and south, east and west, divided into red, green and yellow colors on color, the expression of different meaning. The red light is not passed in 20 seconds, turning to the green light for 3 seconds after turning the yellow light. And the time Settings on main roads and secondary highways are different, so how do they control the system? How does it all work? How do red, green, and yellow lights show time? What are the devices? The meaning of road traffic lights is whether people can travel safely! ... Principle of main and second road - points are how many vehicles, because the main trunk road vehicles more than time, so in keeping the passage of time also is to show a green light time varied trunk road, main road of 20 s, 10 s trunk road. Assume main road traffic lights the time when the green light for A, trunk road when the green light for B, road traffic signal lamp also is the time of waiting for light when the yellow lights to C. The design of the road traffic light control system is: The main road is green, and the main road red light counter is counting from N1 to 20 left The main road yellow light is bright, the main road red light counter is from N3 to 5 increment counting left The main road is red light, and the green light counter is from N2 to 10 left The main road is red light, and the yellow light on the main road is increased by N3 to 5 (the loop is the process of the road traffic light control system) ... Complete road traffic lights the whole process needs to use master controller, the control circuit, counter, the clock signal generator, signal decoding drive circuit and digital display of decoding drive circuit. By the clock signal generator to the main control circuit and counter, counter to the deco