外文翻譯基于PLC的交通燈設計

1、 畢業(yè)設計（外文翻譯）英文題目 PLC-based design of traffic lights中文題目 基于PLC的交通燈設計 系 （院） 自動化系 專 業(yè) 電氣工程與自動化 學生姓名 學 號 指導教師 職 稱 講 師 二一三 年 六 月PLC-based design of traffic lightsAbstract: One kind of traffic light control system using programmable logic controller (PLC), via software control traffic lights run automatica

2、lly. In the system, the original line is the program instead of the relay, programmable logic controller (PLC) system hardware and software resources to be fair use. Normal operation and emergency transport for a detailed description and from the East and West emergencies can be mutually linked. Tra

3、ffic signal systems and two seven-segment digital display in the countdown order; also discussed in detail the wiring of the hardware and PLC ladder. Traffic lights at the crossroads of the remote monitoring system design configuration software MCGS, real-time monitoring of traffic lights, greatly i

4、mproving the reliability of data transmission. At the same time, we can configure the traffic lights to change the status of photographs.Keywords: switching power,supply protection, circuit system design1. Introduction With the social development and progress, traffic flow becomes increasingly impor

5、tant. On the one hand, too many crossroads, more and more vehicles, which are causing serious traffic congestion. On the other hand, in the limited time it is necessary to maintain the vehicle and pedestrian fast and safe. Therefore, one kind of traffic light control system design, can be used to di

6、splay time countdown, with computer controlled real-time data. In addition, the configuration technology for real-time images that reflect the traffic lights, understand the historical crossroads of work to get traffic lights visualization. The system consists of host computer and a low computer. MC

7、GS configuration is installed in the host computer is lower by the PLC control system.Normal traffic signal timing diagram shown in Figure 1. But there are some urgent matters, for example. There are a number of ambulances to transport patients to the hospital or to deal with a number of fire engine

8、s and fire. Fire engines and ambulances rushed to take precedence over other traffic scene. According to urban traffic control system, under normal circumstances, two control methods and urgency traffic control factors into account. This process can show 14 segment encoder. U.S. traffic lights insta

9、nt record of the monitoring process.Emergency control signals to control traffic emergency switch. If there is no emergency lights all work, but when an emergency open. In this case, the car is urgent priority pass. Once the emergency vehicle passes, emergency switch off immediately. The green light

10、 in the same direction of the vehicle quickly flashes three times, followed by the normal operation. If you were from the north-south and east-west two emergency vehicles, traffic control systems can respond quickly came early, and then another.2. Traffic Control System Design A. Hardware design CP1

11、H series PLC as controller, display the procedure should stop when the time series of abnormal system operation, the time will not be displayed. When the emergency procedures are completed time series, countdown display program should be reset. At 220 V AC system is used to control traffic lights, 2

12、4 V DC control segment encoder, Figure 2 shows the scheme Eastern time display. CP1H series programmable logic controller (PLC) is a simple controller, which consists of 24 inputs and sixteen outputs. Because the output to twenty In this system, an I / O module must be extended. Circuit is shown in

13、Figure 2.B. Control Program DesignSix timers and two special normal open pulse is used in this system, the green light flashes for all north-south and east-timer and a special pulse; eight kinds of interlocking internal relay is used to implement the urgency and transmit pulse two directions to PLC,

14、 shown in the figure. Two SDEC instructions are used to display the countdown display the corresponding light. As an important part of the countdown display program, east and west of the green light reflected in the view 4 in these programs downloaded to the programmable logic controller (PLC), all

15、the traffic lights running accuracy, urgency, and things can be interlocked from north to south strictly, all the lights can be set back to the urgency of passing state. Therefore, these control program is correct, simple.C. Monitoring System Computer system has two main functions: an output signal

16、acquisition and display real-time status of the programmable logic controller (PLC) to control traffic lights, traffic lights. Another notification robot status and history of the state real-time curve by examining the history and alarm window. This monitoring system design and configuration softwar

17、e MCGS configuration is easy. The serial communication is implemented as follows.Data inspection methods: double endedSerial Communications Number: COM0 endedThe minimum sampling period: 200 msProgrammable Logic Controller (PLC) The parameters are defined as follows:The minimum sampling period of th

18、e basic properties: 200 msThree read / write channel: X0, X1, X2Six read-only access (read U.S. traffic lights): Q0-Q5 All channels must be connected to a variable defined in a real-time database access visits and other parameters to their default values. After a successful relationship, PLC and com

19、puter control system is able to change the color of the analog signal lights in the picture on the PC being collected data through the serial port. In contrast, by changing the parameters of the host, the corresponding value is written to the PLC internal relay control, intersection traffic lights c

20、an be implemented. Experimental results show that the system is usually good enough and animation. Online monitoring system of traffic lights in Figure 5:3. ConclusionExperimental results show that the system is usually configured with enough good photos. This system simplifies the programmable logi

21、c controller (PLC) and the communication between the host computer using industrial configuration software development time is greatly reduced. In particular, more suitable for complex control systems. We can control the traffic lights by the PLC and MCGS configuration, replace the original relay co

22、ntrol, improve the systems lifetime. At the same time, this method can be applied to control the motor and fluid levels. Remote control and configuration combined with the simulation, can be applied to similar control zone.4. References1 Whitworth, Duller, Jones D I. Aerial video inspection of overh

23、ead power lines J.Power Engineering Journal,2001,15:25-32.2 Jan Axelson, Lakeview Research-Serial port complete D. USA:1999:91-135.基于PLC的交通燈控制系統(tǒng)設計摘要一種交通燈控制系統(tǒng)采用可編程序控制器(PLC), 通過軟件控制交通燈自動運行。在系統(tǒng)原有的繼電器線路被程序代替，可編程序控制器(PLC)系統(tǒng)的硬件和軟件資源的被合理使用。正常運行和緊急運輸進行了詳細的介紹，并從突發(fā)事件的東西南北可以相互連鎖。交通燈信號系統(tǒng)和兩個數碼管顯示在倒計時秩序; 同時詳細的論述布

24、線的硬件和PLC的梯形圖。在十字路口的交通信號燈遠程監(jiān)控系統(tǒng)設計了組態(tài)軟MCGS，實時監(jiān)控紅綠燈，大大提高了數據傳輸的可靠性。與此同時，我們可以通過合理配置改變交通信號燈的狀況。關鍵詞：PLC，交通信號燈，SDEC，配置軟件，MCGS組態(tài)一、引言隨著社會的發(fā)展和進步,交通暢通變得越來越重要。一方面,太多的十字路口,車輛越來越多，這些都造成嚴重的交通堵塞。另一方面，在有限的時間有必要保持車載和行人快速和安全。因此，一種交通燈控制系統(tǒng)的設計, 可以用來顯示時間的倒計時, 與電腦聯網控制實時數據。此外,配置技術應用于實時圖像反映的交通信號燈、了解歷史工作的十字路口， 獲得交通信號燈的可視化。該系統(tǒng)由

25、計算機主機和較低的電腦。MCGS組態(tài)被安裝于主機、較低的電腦是由PLC控制系統(tǒng)。時序圖正常交通信號燈顯示圖1，但也有一些緊急的事情。例如有一些救護車用來運送病人醫(yī)院或一些消防車用來對付大火。消防車和救護車優(yōu)先于其他的交通趕到出事地點，根據城市交通控制系統(tǒng)，正常情況下兩種控制方法交通控制和緊迫性因素考慮在內。這個過程可以顯示了14段編碼器，美國的交通信號燈的即時照片記錄了監(jiān)控過程。緊急控制信號是控制交通緊急開關如果沒有緊急事件所有的紅綠燈正常工作，只是緊急事件發(fā)生的時候打開。在這種情況下,緊急的車是優(yōu)先通過。一旦緊急車輛經過,應急開關立即關掉。那綠色的光在同一方向的車輛迅速閃三次，隨后正常運行。

26、如果從南北和東西分別有兩個緊急車，交通控制系統(tǒng)只能迅速反應來得早的，然后另一個。二、交通控制系統(tǒng)的設計A.硬件電路設計CP1H系列的PLC作為控制器,，顯示的程序應該停止的時候，時間序列異常系統(tǒng)工作，時間不會被顯示。當緊急程序完成了時間序列、倒計時顯示的程序應該被重置。在220 V交流系統(tǒng)是用來控制交通信號燈，24 V直流控制七段編碼器，圖2顯示了方案東西方時間顯示。CP1H系列可編程序控制器(PLC)的一個簡單的控制器，它由24輸入和16個輸出。因為需要二十輸出在這個系統(tǒng)中,一個I / O模塊必須被擴展。線路圖如圖2：B.控制程序的設計六個定時器和兩個特殊的正常開啟脈沖是用來在這個系統(tǒng)中，綠色燈閃南北及東西進行所有的定時器和特殊的脈沖；八種內部繼電器被用來實現聯鎖的緊迫性和發(fā)送脈沖兩個方向至PLC，圖中顯示。兩個SDEC指示是用來顯示倒計時顯示相應的光。作為一個重要的部分,倒計時顯示程序，東、西向的綠燈表現在視圖4。在這些程序下載到可編程序控制器(PLC)，所有的交通燈運行準確、緊迫性和從南北東西可以聯鎖