基于PLC的停车场管理系统的毕业设计.doc

摘要 停车场管理控制系统是现代建筑中不可或缺的一部分。随着计算机控制技术的发展，停车场管理控制系统的功能及软硬件设施也伴随其发展而不断改进。设计在对停车场管理及控制系统基本功能研究的基础上改进其系统构成及控制流程，应用PLC作为现场控制器，对现场设备进行信号采集与控制。研究了停车场及其控制系统在智能建筑中的作用及其自身管理模式的发展、变化。对典型停车场的管理及控制功能需求进行分析与研究，在此基础上提出模块化设计管理流程。根据管理及控制功能需求，充分研究了相关系统组件的工作原理及性能指标，据此进行系统功能设计及硬件选型。现在小区停车场管理系统重点要做到准确指示车辆进出，车辆进入时给与司机准确的车位数量，车辆进入后，记录车辆数量，车辆离开时，减少车辆数量。车辆进出指示可完全由PLC作为中央控制来处理，停车场空位指示可利用价格较不高的数码管显示。 本设计主要阐述了停车场的构成、工作原理、工作条件。运用可编程控制器(PLC)对停车场汽车进出进行管理的方案，此方案大大提高了工作效率。本设计利用PLC控制停车场空位显示，实现全自动运行。利用出口、入口的车辆检测传感器，检测车辆的出入，并用32位加减法计数器进行计数，从而达到自动控制的目的。 关键词：停车场，PLC控制器，计数器，数码管 Abstract Parking management control system is an integral part of modern architecture. With the development of computer control technology, car park management and control system functions and the hardware and software facilities are also accompanied its development and continuous improvement. Designed for parking management and control system based on the study of basic functions to improve its system structure and control processes, applications PLC as a scene controller, on-site equipment for signal acquisition and control. Studied the parking lot and its control system in intelligent building management role and its own model of development, change. Typical car park management and control of functional requirements analysis and research, based on this proposed modular design management process. According to the management and control of functional requirements, thorough study of the relevant system components working principle and performance indicators, which functions of the system design and hardware selection. Now focus on residential parking management system to achieve accurate indication of vehicles in and out, giving the driver when a vehicle enters the exact number of parking spaces and the exact location of the vehicle to enter, record the number of vehicles, the vehicle left, reducing the number of vehicles. Vehicle access instructions can be completely controlled by the PLC as central to treatment, indicating a