基于PLC的车辆出入库管理系统精选.doc

摘要 随着生产力和科学技术的不断发展，人们的日常生活和生产活动大量的使用自动化控制，不仅节约了人力资源而且很大程度的提高了生产效率，又进一步的促进了生产力快速发展，并不断的丰富着人们的生活。 本设计是基于PLC的车辆出入库管理系统，采用两位LED来显示车库内车辆的实际数量。使用两个光传感器来监控车辆的进出并完成计数工作，车辆进入时经过两个光传感器使显示数字加一，车辆外出时经过两个光传感器使显示数字减一，但当车辆只经过一个传感器时不计数。 为了防止意外计数错误，本系统采用反复程序校验，来提高系统的可靠性。 首先注意控制两个传感器之间的距离，用程序验证进出车库的是否是车辆，当人通过传感器时不计数；其次，用逻辑互锁方式，启动加计数则要锁定减计数，产生加计数脉冲时，则要锁定减计数脉冲，如此以保证可靠性；最后及时的进行复位处理，以免车辆在传感器附近作往返运动时错误计数。 关键词：PLC， 传感器 ，车辆 ，可靠性 Abstract With productivity and the continuous development of science and technology,people’s daily lives and production activities of a large number of the use of automated control , not only saving human resources ,but a large degree of improved production efficiency, further promote the rapid development of productive forces, and constant enrich people’s lives. The design is based on the storage of vehicles PLC mangement systems , LED used two vehicles in the garage to show that the actual number . the use of two light sensor to monitor vehicle access and complete count , the two vehicles entered the house throuth the sensor and a digital display , two vehicles going through the sensor by a digital display ,but only after a sensor vehicles will not count. In oder to prevent accidents counting error ,the system used repeatedly checking procedures to enhance the reliability of the system . First of all ,pay attention to control the distant between the two sensors ,access to the garage with the certification ,procedures for the vehicle ,through the sensor when people do not count ,Sencondly ,the introduction of the logical interlocked ,and counting would start by counting lock , a Canadian counting will have to lock pulse by pluse count , so in order to ensure reliability , Finally ,a reduction of the processing time to avoid vehicles in the vicinity of sensors for counting from the wrong campaign . Key words : PLC ， Sensor ， Vehicles ， Reliability 1绪论 1.1课题的提出背景 近年来，我国的汽车产业飞速发展。另外，国家把城市化、城镇化作为我国经济发展的一个方向，城市人口的增长和规模的扩大为城市交通带来更大发展机遇的同时，也势必会给城市交通造成更大的压力。为满