基于分布式控制架構(gòu)的信號機設(shè)計研究
發(fā)布時間：2018-08-26 11:23
【摘要】：隨著經(jīng)濟的發(fā)展和生活節(jié)奏的加快,越來越多的人購買私家車作為代步工具,汽車的保有量也隨之迅速增加。由于大部分城市的交通設(shè)施還比較落后,交叉路口的調(diào)控能力比較弱,交通阻塞現(xiàn)象日益嚴(yán)重。為了適應(yīng)城市交通的發(fā)展趨勢,提高交通管理的技術(shù)水平和道路通行能力,改善目前大多數(shù)城市以多時段定時式信號機為主流的現(xiàn)狀,設(shè)計了一套具有單點控制、區(qū)域聯(lián)網(wǎng)控制以及自適應(yīng)控制等功能的分布式架構(gòu)的信號機控制系統(tǒng)。系統(tǒng)的硬件平臺采用分布式系統(tǒng)的硬件組織方式來進行設(shè)計,每塊獨立的功能板都具有微處理器,具有一定的自主控制能力。各功能板之間通過CAN總線進行相互通信,以構(gòu)成一個完整的系統(tǒng)。其中,核心控制板采用32位的ARM作為其核心處理器,具有以太網(wǎng)通信模塊、串口通信模塊、485倒計時模塊、3G通信模塊、觸控屏控制模塊以及GPS校時模塊等功能模塊。核心控制板可通過RJ45接口或者3G通信模塊與控制中心進行通信,上傳車流量數(shù)據(jù)或者下載控制方案等信息,從而可實現(xiàn)城市交通的區(qū)域控制;通過由MAX485芯片組成的485通信模塊可實現(xiàn)信號機對倒計時牌的控制;用戶可通過觸控屏的UI界面設(shè)置適合本路口的控制方案;通過采集GPS模塊的數(shù)據(jù),可獲得精確的當(dāng)前時間,為系統(tǒng)的校時提供硬件支持。信號燈驅(qū)動板以及車輛信息采集板以單片機PIC18F4580作為其核心處理器,信號燈驅(qū)動板通過由光電耦和器、可控硅等元器件組成的驅(qū)動電路控制信號燈的亮滅,并可通過由電流感應(yīng)器、電壓比較器等元器件組成的狀態(tài)反饋電路采集信號燈的工作狀態(tài)信息;車輛信息采集板可完成車輛信息的數(shù)據(jù)采集、數(shù)據(jù)分析以及數(shù)據(jù)通信,將檢測器檢測到的車流信息通過采集電路和整形電路送至單片機,單片機對該信息進行數(shù)據(jù)分析,判斷車輛通過情況。電源板為系統(tǒng)提供穩(wěn)定的5V及3.3V工作電壓,通過電壓轉(zhuǎn)換模塊可將220V市電轉(zhuǎn)換為5V電壓輸出,5V電壓經(jīng)芯片LM117可獲得穩(wěn)定的3.3V電壓輸出。背板的主要功能是為各個功能板提供CAN通信的通道。經(jīng)過測試運行,系統(tǒng)能夠正常的運行,完成交叉路口的交通控制,對城市交通信號控制系統(tǒng)的研發(fā)與建設(shè)具有較高的參考和實用價值。
[Abstract]:With the development of economy and the quickening pace of life, more and more people buy private cars as a means of transportation, and the quantity of cars also increases rapidly. Because the traffic facilities of most cities are still relatively backward, the control ability of intersections is relatively weak, and traffic congestion is becoming more and more serious. In order to adapt to the development trend of urban traffic, improve the technical level of traffic management and traffic capacity, and improve the current situation of multi-time timing signal in most cities, a set of single-point control is designed. Distributed signal control system with the functions of area network control and adaptive control. The hardware platform of the system is designed by the hardware organization mode of the distributed system. Each independent functional board has microprocessor and certain autonomous control ability. Each functional board communicates with each other through CAN bus to form a complete system. Among them, the core control board uses 32-bit ARM as its core processor, with Ethernet communication module, serial port communication module 485 countdown module and 3G communication module, touch control screen control module and GPS timing module and other functional modules. The core control board can communicate with the control center through the RJ45 interface or 3G communication module, upload the traffic flow data or download the information of the control scheme, so as to realize the regional control of urban traffic. Through the 485 communication module composed of MAX485 chip, the signal machine can control the inverted time plate; the user can set the control scheme suitable for the intersection through the UI interface of the touch control screen; by collecting the data of the GPS module, the accurate current time can be obtained. Provide hardware support for system timing. The signal lamp driving board and the vehicle information collecting board take the single chip computer PIC18F4580 as its core processor. The signal lamp drive board controls the signal lamp to light out through the driving circuit composed of photoelectric coupling device, silicon controlled device and so on. The state feedback circuit composed of current sensor and voltage comparator can collect the working state information of the signal lamp, and the vehicle information acquisition board can complete the data acquisition, data analysis and data communication of the vehicle information. The traffic flow information detected by the detector is sent to the single chip microcomputer through the collection circuit and the shaping circuit. The single chip computer carries on the data analysis to judge the passing situation of the vehicle. The power supply board provides stable 5V and 3.3V operating voltages for the system. Through the voltage conversion module, the 220V can be converted to 5V voltage output 5V voltage can be obtained by LM117 chip stable 3.3V voltage output. The main function of the backplane is to provide CAN communication channels for each functional panel. After testing and running, the system can run normally and complete traffic control at intersections, which has a high reference and practical value for the development and construction of urban traffic signal control system.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U491.51
本文編號：2204716
[Abstract]:With the development of economy and the quickening pace of life, more and more people buy private cars as a means of transportation, and the quantity of cars also increases rapidly. Because the traffic facilities of most cities are still relatively backward, the control ability of intersections is relatively weak, and traffic congestion is becoming more and more serious. In order to adapt to the development trend of urban traffic, improve the technical level of traffic management and traffic capacity, and improve the current situation of multi-time timing signal in most cities, a set of single-point control is designed. Distributed signal control system with the functions of area network control and adaptive control. The hardware platform of the system is designed by the hardware organization mode of the distributed system. Each independent functional board has microprocessor and certain autonomous control ability. Each functional board communicates with each other through CAN bus to form a complete system. Among them, the core control board uses 32-bit ARM as its core processor, with Ethernet communication module, serial port communication module 485 countdown module and 3G communication module, touch control screen control module and GPS timing module and other functional modules. The core control board can communicate with the control center through the RJ45 interface or 3G communication module, upload the traffic flow data or download the information of the control scheme, so as to realize the regional control of urban traffic. Through the 485 communication module composed of MAX485 chip, the signal machine can control the inverted time plate; the user can set the control scheme suitable for the intersection through the UI interface of the touch control screen; by collecting the data of the GPS module, the accurate current time can be obtained. Provide hardware support for system timing. The signal lamp driving board and the vehicle information collecting board take the single chip computer PIC18F4580 as its core processor. The signal lamp drive board controls the signal lamp to light out through the driving circuit composed of photoelectric coupling device, silicon controlled device and so on. The state feedback circuit composed of current sensor and voltage comparator can collect the working state information of the signal lamp, and the vehicle information acquisition board can complete the data acquisition, data analysis and data communication of the vehicle information. The traffic flow information detected by the detector is sent to the single chip microcomputer through the collection circuit and the shaping circuit. The single chip computer carries on the data analysis to judge the passing situation of the vehicle. The power supply board provides stable 5V and 3.3V operating voltages for the system. Through the voltage conversion module, the 220V can be converted to 5V voltage output 5V voltage can be obtained by LM117 chip stable 3.3V voltage output. The main function of the backplane is to provide CAN communication channels for each functional panel. After testing and running, the system can run normally and complete traffic control at intersections, which has a high reference and practical value for the development and construction of urban traffic signal control system.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U491.51
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1 周純杰,宋明權(quán),王永驥;CAN總線網(wǎng)絡(luò)節(jié)點通信的一種方法及實現(xiàn)[J];控制工程;2005年01期
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1 陳曦;CAN總線實時性和可靠性若干問題的研究[D];天津大學(xué);2010年
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