本文關(guān)鍵詞： 單片機(jī) 車位引導(dǎo) 磁阻傳感器 HTTP協(xié)議　出處：《大連海事大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：本文提出的智能停車場(chǎng)車位引導(dǎo)系統(tǒng)能通過(guò)一張PC端的全景圖使車主對(duì)停車場(chǎng)實(shí)時(shí)的車位信息一目了然。能在手機(jī)APP上規(guī)劃出一條從停車場(chǎng)入口到目標(biāo)車位或者從停車位到停車場(chǎng)出口處的最佳行駛路線,語(yǔ)音提示司機(jī)前行的方向和前行的距離。該系統(tǒng)解決了司機(jī)進(jìn)入大型停車場(chǎng)找空余車位困難問(wèn)題,節(jié)省了司機(jī)停車時(shí)間,提高了停車效率和停車場(chǎng)管理水平,增加了經(jīng)濟(jì)效益。本文開(kāi)發(fā)了一套智能停車場(chǎng)引導(dǎo)系統(tǒng),系統(tǒng)首先采用磁通量傳感器解決了車位信息策略的問(wèn)題,然后設(shè)計(jì)實(shí)現(xiàn)了兩個(gè)關(guān)鍵的具有通信功能的車位信息集線器和車位信息集總器的硬件設(shè)備,最后完成了單個(gè)停車場(chǎng)車位信息從停車場(chǎng)服務(wù)器到云服務(wù)器的提交軟件設(shè)計(jì)。停車場(chǎng)車位信息集線器采用單片機(jī)為核心,可連接14片磁阻傳感器。當(dāng)磁阻傳感器上方有車輛�？炕蛘哂熊囕v路過(guò)時(shí)會(huì)引起傳感器上方磁場(chǎng)的擾動(dòng),進(jìn)而引起磁通量的變化,系統(tǒng)根據(jù)磁場(chǎng)的擾動(dòng)來(lái)判斷上方是否有車,實(shí)現(xiàn)對(duì)車位上方車輛的檢測(cè),埋設(shè)在過(guò)道的傳感器檢測(cè)到車輛時(shí),車位信息集線器上傳發(fā)送車輛位置坐標(biāo)信息,實(shí)現(xiàn)對(duì)車輛的定位。車位信息集總器是利用一款型號(hào)為L(zhǎng)PC2132的ARM芯片和嵌入式軟件,依據(jù)通信協(xié)議實(shí)現(xiàn)對(duì)車位磁通量信息和位置坐標(biāo)數(shù)據(jù)信息的收集、匯總和遞交。云端數(shù)據(jù)提交軟件有三大模塊,分別為串口通信模塊、停車場(chǎng)車位車輛動(dòng)態(tài)顯示模塊和POST數(shù)據(jù)提交模塊。串口通信模塊創(chuàng)建SerialPort類完成車位數(shù)據(jù)信息的接收。停車場(chǎng)車位車輛動(dòng)態(tài)顯示模塊利用接收的車位狀態(tài)數(shù)據(jù)來(lái)控制車位車輛圖片的隱藏與顯示。POST數(shù)據(jù)提交模塊利用HTTP協(xié)議中POST方法完成把數(shù)據(jù)信息提交到WEB服務(wù)器中。經(jīng)過(guò)反復(fù)多次停車場(chǎng)測(cè)試,在4G網(wǎng)絡(luò)和互聯(lián)網(wǎng)環(huán)境下對(duì)系統(tǒng)的車位變更狀態(tài)檢測(cè)功能和過(guò)道處車輛引導(dǎo)功能進(jìn)行驗(yàn)證。結(jié)果表明系統(tǒng)完成停車場(chǎng)30個(gè)車位狀態(tài)檢測(cè)用時(shí)極短,每個(gè)車位狀態(tài)檢測(cè)用時(shí)短、準(zhǔn)確率高、可靠性好;在車輛引導(dǎo)時(shí)傳感器反應(yīng)靈敏,數(shù)據(jù)傳輸流暢,車位坐標(biāo)信息從車位信息集線器到手機(jī)APP端傳輸延遲在1秒之內(nèi),實(shí)時(shí)性較好。
[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.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U491.71;TP368.12;TP212.9

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