PLC可编程序控制器是以微处理器为基础，综合了计算机技术、自动控制技术和通讯技术发展而来的一种新型工业控制装置。它具有结构简单、编程方便、可靠性高等优点，已广泛用于工业过程和位置的自动控制中。据统计，可编程控制器是工业自动化装置中应用最多的一种设备。专家认为，可编程控制器将成为今后工业控制的主要手段和重要的基础设备之一，PLC、机器人、CAD/CAM将成为工业生产的三大支柱。
由于PLC有环境适应性强的特性，同时其内部定时器资源十分丰富，可对目前普遍使用的“渐进式”信号灯进行精确控制，特别对多岔路口的控制可方便地实现。因此现在将PLC越来越多地应用于交通灯系统中。同时，PLC本身还具有通讯联网功能，将同一条道路上的信号灯组成一个局域网进行统一调度管理，可缩短车辆通行等候时间，实现科学化管理。在十字路口红绿灯闪亮及车辆通行，十分形象地显示出了PLC在交通灯系统中的实际应用。本文结合交通的实际情况，设计了一种简单的十字路口交通灯控制系统，主要通过流程图和时序图阐述了交通灯控制系统的工作原理，并结合工作原理设定了方案，然后进行了交通灯硬件系统设计，最后进行了程序设计。该交通系统全部运用定时器来实现交通灯的工作，虽然程序长了些，但其没有复杂指令，使人易懂！
PLC programmable logic controller is a microprocessor based on a combination of computer technology, automatic control and communication technologies developed from a new type of industrial control devices. It has a simple structure, easy programming, high reliability, has been widely used in industrial process and location of the automatic control. According to statistics, the programmable automation controller is the most widely used devices in a device. Experts believe that the future will be a programmable logic controller to control the main means of industry and one of the important infrastructure, PLC, robotics, CAD / CAM will become the three pillars of industrial production.
PLC has the environment as a result of the characteristics of adaptability, while its internal timer is very rich in resources, can be widely used on the current "progressive" signal for precise control, especially for the control of multi-fork can be easily achieved. PLC therefore will now be applied to more and more traffic lights system. At the same time, PLC communications network also has its own functions, will be on the road with a signal to form a unified scheduling LAN management, can reduce the waiting time of vehicles, the realization of scientific management. Flashing at the crossroads and traffic lights, is vividly shown in the traffic lights PLC practical application of the system. In this paper, the actual traffic situation, design a simple traffic light intersection control systems, primarily through the flow chart and timing diagram of a traffic light control system for the working principle and the principle of combining the work of setting the program, and then proceed to the traffic lamp hardware system design, the end of the program design. All use of the transport system timer to achieve the traffic lights work, although the process has been long, but it is not complicated instructions, is easy to understand!
PLC has the environment as a result of the characteristics of adaptability, while its internal timer is very rich in resources, can be widely used on the current "progressive" signal for precise control, especially for the control of multi-fork can be easily achieved. PLC therefore will now be applied to more and more traffic lights system. At the same time, PLC communications network also has its own functions, will be on the road with a signal to form a unified scheduling LAN management, can reduce the waiting time of vehicles, the realization of scientific management. Flashing at the crossroads and traffic lights, is vividly shown in the traffic lights PLC practical application of the system. In this paper, the actual traffic situation, design a simple traffic light intersection control systems, primarily through the flow chart and timing diagram of a traffic light control system for the working principle and the principle of combining the work of setting the program, and then proceed to the traffic lamp hardware system design, the end of the program design. All use of the transport system timer to achieve the traffic lights work, although the process has been long, but it is not complicated instructions, is easy to understand!
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第1个回答 2009-06-03
PLC可编程序控制器是以微处理器为基础，综合了计算机技术、自动控制技术和通讯技术发展而来的一种新型工业控制装置。它具有结构简单、编程方便、可靠性高等优点，已广泛用于工业过程和位置的自动控制中。据统计，可编程控制器是工业自动化装置中应用最多的一种设备。专家认为，可编程控制器将成为今后工业控制的主要手段和重要的基础设备之一，PLC、机器人、CAD/CAM将成为工业生产的三大支柱。
由于PLC有环境适应性强的特性，同时其内部定时器资源十分丰富，可对目前普遍使用的“渐进式”信号灯进行精确控制，特别对多岔路口的控制可方便地实现。因此现在将PLC越来越多地应用于交通灯系统中。同时，PLC本身还具有通讯联网功能，将同一条道路上的信号灯组成一个局域网进行统一调度管理，可缩短车辆通行等候时间，实现科学化管理。在十字路口红绿灯闪亮及车辆通行，十分形象地显示出了PLC在交通灯系统中的实际应用。本文结合交通的实际情况，设计了一种简单的十字路口交通灯控制系统，主要通过流程图和时序图阐述了交通灯控制系统的工作原理，并结合工作原理设定了方案，然后进行了交通灯硬件系统设计，最后进行了程序设计。该交通系统全部运用定时器来实现交通灯的工作，虽然程序长了些，但其没有复杂指令，使人易懂！
PLC programmable logic controller is a microprocessor based on a combination of computer technology, automatic control and communication technologies developed from a new type of industrial control devices. It has a simple structure, easy programming, high reliability, has been widely used in industrial process and location of the automatic control. According to statistics, the programmable automation controller is the most widely used devices in a device. Experts believe that the future will be a programmable logic controller to control the main means of industry and one of the important infrastructure, PLC, robotics, CAD / CAM will become the three pillars of industrial production.
PLC has the environment as a result of the characteristics of adaptability, while its internal timer is very rich in resources, can be widely used on the current "progressive" signal for precise control, especially for the control of multi-fork can be easily achieved. PLC therefore will now be applied to more and more traffic lights system. At the same time, PLC communications network also has its own functions, will be on the road with a signal to form a unified scheduling LAN management, can reduce the waiting time of vehicles, the realization of scientific management. Flashing at the crossroads and traffic lights, is vividly shown in the traffic lights PLC practical application of the system. In this paper, the actual traffic situation, design a simple traffic light intersection control systems, primarily through the flow chart and timing diagram of a traffic light control system for the working principle and the principle of combining the work of setting the program, and then proceed to the traffic lamp hardware system design, the end of the program design. All use of the transport system timer to achieve the traffic lights work, although the process has been long, but it is not complicated instructions, is easy to understand!
由于PLC有环境适应性强的特性，同时其内部定时器资源十分丰富，可对目前普遍使用的“渐进式”信号灯进行精确控制，特别对多岔路口的控制可方便地实现。因此现在将PLC越来越多地应用于交通灯系统中。同时，PLC本身还具有通讯联网功能，将同一条道路上的信号灯组成一个局域网进行统一调度管理，可缩短车辆通行等候时间，实现科学化管理。在十字路口红绿灯闪亮及车辆通行，十分形象地显示出了PLC在交通灯系统中的实际应用。本文结合交通的实际情况，设计了一种简单的十字路口交通灯控制系统，主要通过流程图和时序图阐述了交通灯控制系统的工作原理，并结合工作原理设定了方案，然后进行了交通灯硬件系统设计，最后进行了程序设计。该交通系统全部运用定时器来实现交通灯的工作，虽然程序长了些，但其没有复杂指令，使人易懂！
PLC programmable logic controller is a microprocessor based on a combination of computer technology, automatic control and communication technologies developed from a new type of industrial control devices. It has a simple structure, easy programming, high reliability, has been widely used in industrial process and location of the automatic control. According to statistics, the programmable automation controller is the most widely used devices in a device. Experts believe that the future will be a programmable logic controller to control the main means of industry and one of the important infrastructure, PLC, robotics, CAD / CAM will become the three pillars of industrial production.
PLC has the environment as a result of the characteristics of adaptability, while its internal timer is very rich in resources, can be widely used on the current "progressive" signal for precise control, especially for the control of multi-fork can be easily achieved. PLC therefore will now be applied to more and more traffic lights system. At the same time, PLC communications network also has its own functions, will be on the road with a signal to form a unified scheduling LAN management, can reduce the waiting time of vehicles, the realization of scientific management. Flashing at the crossroads and traffic lights, is vividly shown in the traffic lights PLC practical application of the system. In this paper, the actual traffic situation, design a simple traffic light intersection control systems, primarily through the flow chart and timing diagram of a traffic light control system for the working principle and the principle of combining the work of setting the program, and then proceed to the traffic lamp hardware system design, the end of the program design. All use of the transport system timer to achieve the traffic lights work, although the process has been long, but it is not complicated instructions, is easy to understand!
参考资料：自己想
