近年来，我国大中型城市的小汽车的保有量越来越大，公共车位相对缺乏、停车难的矛盾已经成为城市规划管理的一个突出问题。而目前国内现阶段运营中的停车场管理系统仅仅只是对车辆的停车时间进行统计，以实现自动计费和收费的功能；为解决车位紧张问题，部分城市的规划超前要求新建的城市商业综合体、居民住宅小区等设立多层停车场以及立体车位。然而，对于车位的管理工作多采用人工管理方式，多层停车场存在的问题也暴露出来，例如：驶入车辆不能确知哪层，哪些位置还存在空位；无法及时准确的统计停车场内空闲车位的数量及方位信息，管理人员无法对待停车辆进行有效的指引和调度。为了解决上述问题，本文设计了一种停车区位引导系统，解决了大型地下停车场多层停车信息不对称的问题，使得驶入车辆能够方便获得每层的剩余车位信息，快速方便的泊车。 本论文以三层地下停车场为例，设计了一个多层地下停车场区位引导系统；本系统由上位数据库计算机控制中心、中心控制器、下位分层控制器和总入口及各层入口LED点阵显示屏共同组成。其中系统硬件部分包括车辆检测转换电路、多级阵列式LED显示驱动电路以及LED点阵显示屏，系统中控制器通过拨码开关来选择是中心控制器还是分层控制器，监控室的中心主控制器通过RS-485的方式来与各层的分控制器进行通信，同时提供以太网口进行通信，有效避免了网络的重建。其中软件部分包括上位机软件设计和下位机软件设计，其中上位机软件实现了停车场车位进行初始化、实时监测各层车位的占用情况等功能；下位机软件实现了LED点阵屏驱动、串口驱动和网口驱动等系列驱动控制功能，实现了LED点阵屏显示、车辆信号检测、主从控制器之间、以及主控制器与上位机间的通信功能。 系统经过大量严格测试，结果表明，该系统可以快速准确对进出车辆信号进行检测，将检测后的车位信息传输给LED屏幕实时显示，方便驾驶员快速地选择合适的地方停车；系统整体设计合理，可靠性高，便于安装，使用价值高。

In recent years, the car ownership of Chinese in large and medium-sized cities being larger and larger; however, the relative lack of public parking stall and the contradiction of parking has become a prominent problem of the urban planning management. In order to solve the problem of parking tensions, some urban planning demand that the new city commercial complex and residential areas set up a multi-storey car park and stereo parking spaces. However, the present parking systems for domestic operators using manual management of the parking stall, the problems existing in the multi-storey car park are also exposed. Such as the diver don’t sure the layer with empty parking stall, managers can not collect the number of free parking spaces and orientation information timely and accurately, the managers can not effectively treat the parking guidance and scheduling. In order to solve the above problems, this paper put forward a parking location guidance system, solved the problem of asymmetric parking information for large underground parking, so drivers can find the remaining parking information of each layer easily and parking quickly and easily. This paper designs a multi-layered underground parking location guidance system, which base on three levels of underground parking lot. This system consists of upper database under computer control center, the center controller, a hierarchical controller and the total entry and LED dot matrix display screen of each entry. The system hardware consists of vehicle detection conversion circuit, the multistage array type LED display driver circuit, and LED dot matrix display screen, System controller through dial the code switch is to select the center controller or hierarchical controller, the control room at the center of the main controller by means of RS-485 to communicate with each layer of points controller, at the same time provide Ethernet front-end ports communication, effectively avoid the reconstruction of the network. The system software includes upper computer system software design and lower computer system software design; upper computer software realize the function of parking place plot amount initialization, real time monitoring detection the amount of parking plot and other functions. Lower computer software realize the function of LED Lattice screen driver, serial deriver and Ethernet driver etc; realize some function of LED screen display, detection of the signal of traffic, the communication of the master-slave controller and master controller between upper computer。 Through series of strict system test, and the results show that the system can fast and accurately test the signal of vehicles in and out, after the detecting, some parking information can be transmitted to the LED screen display, it is convenient for the driver to choose proper parking space quickly. The whole system design is reasonable, high reliability, ease of installation, and high for use value.