基于互联网的智能车位导引系统的研究

发布时间：2018-02-02 11:40

本文关键词： 单片机车位引导磁阻传感器 HTTP协议　出处：《大连海事大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文提出的智能停车场车位引导系统能通过一张PC端的全景图使车主对停车场实时的车位信息一目了然。能在手机APP上规划出一条从停车场入口到目标车位或者从停车位到停车场出口处的最佳行驶路线,语音提示司机前行的方向和前行的距离。该系统解决了司机进入大型停车场找空余车位困难问题,节省了司机停车时间,提高了停车效率和停车场管理水平,增加了经济效益。本文开发了一套智能停车场引导系统,系统首先采用磁通量传感器解决了车位信息策略的问题,然后设计实现了两个关键的具有通信功能的车位信息集线器和车位信息集总器的硬件设备,最后完成了单个停车场车位信息从停车场服务器到云服务器的提交软件设计。停车场车位信息集线器采用单片机为核心,可连接14片磁阻传感器。当磁阻传感器上方有车辆停靠或者有车辆路过时会引起传感器上方磁场的扰动,进而引起磁通量的变化,系统根据磁场的扰动来判断上方是否有车,实现对车位上方车辆的检测,埋设在过道的传感器检测到车辆时,车位信息集线器上传发送车辆位置坐标信息,实现对车辆的定位。车位信息集总器是利用一款型号为LPC2132的ARM芯片和嵌入式软件,依据通信协议实现对车位磁通量信息和位置坐标数据信息的收集、汇总和递交。云端数据提交软件有三大模块,分别为串口通信模块、停车场车位车辆动态显示模块和POST数据提交模块。串口通信模块创建SerialPort类完成车位数据信息的接收。停车场车位车辆动态显示模块利用接收的车位状态数据来控制车位车辆图片的隐藏与显示。POST数据提交模块利用HTTP协议中POST方法完成把数据信息提交到WEB服务器中。经过反复多次停车场测试,在4G网络和互联网环境下对系统的车位变更状态检测功能和过道处车辆引导功能进行验证。结果表明系统完成停车场30个车位状态检测用时极短,每个车位状态检测用时短、准确率高、可靠性好;在车辆引导时传感器反应灵敏,数据传输流畅,车位坐标信息从车位信息集线器到手机APP端传输延迟在1秒之内,实时性较好。
[Abstract]:The intelligent parking space guidance system proposed in this paper can make the parking space information in the parking lot clear at a glance through a panoramic view of the PC terminal. It can plan a car from the entrance of the parking lot to the target car on the mobile phone APP. The best route from the parking space to the exit of the parking lot. The system solves the difficult problem of the driver entering the large parking lot to find the spare parking space, saves the driver stopping time, improves the parking efficiency and the parking lot management level. In this paper, an intelligent parking lot guidance system is developed. Firstly, the magnetic flux sensor is used to solve the problem of parking information strategy. Then two key communication functions of the parking information hub and parking space information aggregator hardware equipment are designed and implemented. Finally, the submission software design of single parking space information from parking lot server to cloud server is completed. The parking space information hub uses single chip microcomputer as the core. It can be connected to 14 magnetoresistive sensors. When a vehicle stops above the magnetoresistive sensor or a vehicle passes by, the magnetic field above the sensor will be disturbed, and then the magnetic flux will change. According to the disturbance of the magnetic field, the system determines whether there is a vehicle above the car, realizes the detection of the vehicle above the parking space, and when the sensor embedded in the aisle detects the vehicle, the parking information hub uploads and sends the coordinate information of the vehicle position. The parking space information aggregator is based on a ARM chip and embedded software based on LPC2132. According to the communication protocol, the collection, collection and submission of magnetic flux information and position coordinate data information are realized. There are three modules in the cloud data submission software, which are serial communication module. The dynamic display module and POST data submission module of parking lot. The serial port communication module creates SerialPort class to complete the receiving of parking space data information. Using the received parking space status data to control the hidden and display of parking space pictures. Post data submission module uses the POST method in HTTP protocol to complete the data submission to the WEB server. After repeated parking lot tests. In the environment of 4G network and Internet, the function of detecting the change of parking space and the function of vehicle guidance in the aisle are verified. The results show that the system takes a very short time to complete the detection of 30 parking spaces. Each parking space condition detection time is short, the accuracy rate is high, the reliability is good; When the vehicle is guided, the sensor is sensitive, the data transmission is smooth, the transmission delay of the coordinate information from the parking space information hub to the APP terminal of the mobile phone is within 1 seconds, and the real-time performance is better.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.71;TP368.12;TP212.9

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