交通信號燈英文翻譯

1、交通信號燈當今，紅綠燈安裝在各個道口上，已經(jīng)成為疏導(dǎo)交通車輛最常見和最有效的手段。社會的發(fā)展，人們的消費水平不斷的提高，私人車輛不斷的增加。人多、車多道路窄的道路交通狀況已經(jīng)很明顯了。所以采用有效的方法控制交通燈是勢在必行的。PLC 的智能控制原則是控制系統(tǒng)的核心，采用PLC把東西方向或南北方向的車輛按數(shù)量規(guī)模進行分檔，相應(yīng)給定的東西方向與南北方向的綠燈時長也按一定的規(guī)律分檔. 這樣就可以實現(xiàn)按車流量規(guī)模給定綠燈時長，達到最大限度的有車放行，減少十字路口的車輛滯流，緩解交通擁擠、實現(xiàn)最優(yōu)控制，從而提高了交通控制系統(tǒng)的效率.PLC的應(yīng)用正在不斷地走向深入，同時帶動傳統(tǒng)控制檢測日新月益更新。它具有

2、結(jié)構(gòu)簡單、編程方便、可靠性高等優(yōu)點，已廣泛用于工業(yè)過程和位置的自動控制中。由于PLC具有對使用環(huán)境適應(yīng)性強的特性，同時其內(nèi)部定時器資源十分豐富，可對目前普遍使用的“漸進式”信號燈進行精確控制，特別對多岔路口的控制可方便地實現(xiàn)。因此現(xiàn)在越來越多地將PLC應(yīng)用于交通燈系統(tǒng)中。同時，PLC本身還具有通訊聯(lián)網(wǎng)功能，將同一條道路上的信號燈組成一局域網(wǎng)進行統(tǒng)一調(diào)度管理，可縮短車輛通行等候時間，實現(xiàn)科學(xué)化管理。在實時檢測和自動控制的PLC應(yīng)用系統(tǒng)中，PLC往往是作為一個核心部件來使用。. 21世紀，PLC會有更大的發(fā)展。從技術(shù)上看，計算機技術(shù)的新成果會更多地應(yīng)用于可編程控制器的設(shè)計和制造上，會有運算速度更快

3、、存儲容量更大、智能更強的品種出現(xiàn)；從產(chǎn)品規(guī)模上看，會進一步向超小型及超大型方向發(fā)展；從產(chǎn)品的配套性上看，產(chǎn)品的品種會更豐富、規(guī)格更齊全，完美的人機界面、完備的通信設(shè)備會更好地適應(yīng)各種工業(yè)控制場合的需求；從市場上看，各國各自生產(chǎn)多品種產(chǎn)品的情況會隨著國際競爭的加劇而打破，會出現(xiàn)少數(shù)幾個品牌壟斷國際市場的局面，會出現(xiàn)國際通用的編程語言；從網(wǎng)絡(luò)的發(fā)展情況來看，可編程控制器和其它工業(yè)控制計算機組網(wǎng)構(gòu)成大型的控制系統(tǒng)是可編程控制器技術(shù)的發(fā)展方向。目前的計算機集散控制系統(tǒng)DCS中已有大量的可編程控制器應(yīng)用。伴隨著計算機網(wǎng)絡(luò)的發(fā)展，可編程控制器作為自動化控制網(wǎng)絡(luò)和國際通用網(wǎng)絡(luò)的重要組成部分，將在工業(yè)及工業(yè)

4、以外的眾多領(lǐng)域發(fā)揮越來越大的作用。在中國機動車量的不斷增加，許多大城市如北京、上海、南京等地出現(xiàn)了交通超負荷運行的情況，交通事故的問題也越來越嚴重。并且由于各種特殊車輛（如120急救車、119火警車、110警車及各種特種車輛）在緊急情況之下不受紅燈限制，也給交通帶來很多不便，甚至造成交通事故。而且，目前大多數(shù)交通燈在同一時刻都會出現(xiàn)兩個或兩個以上方向同時為綠燈的情況，也增加了交通事故的發(fā)生率。因此，設(shè)計一種專為特殊車輛通過而不至于引發(fā)任何交通事故、正常交通控制時任何時刻只有一個方向通行綠燈的現(xiàn)代化智能交通燈控制系統(tǒng)是迫切需要的。Nowadays, traffic lights installe

5、d in each crossing, has become the most common and dredge the traffic, the most effective means. The development of the society, peoples consumption level unceasing enhancement, private vehicles unceasing increase. And more cars roads are narrow road traffic is clear. So adopting effective method to

6、 control the traffic light is imperative. PLC intelligent control principle is the core of the control system, PLC put the things direction or north-south direction according to quantity of vehicles, the corresponding scale what divides class given the green light direction between north and south d

7、irection according to certain rules too long. It can realize divides class according to a given the green cars duration scale of maximum car release, reduce crossroads vehicles, ease traffic congestion stagnation, realize the optimal control, so as to improve the efficiency of the traffic control sy

8、stem. The application of PLC is continuously, and drive to the deepening traditional control test new month benefit updates. It is simple in structure, programming and high reliability etc, convenient already widely used in industrial processes and position in the automatic control. Due to use of PL

9、C has the characteristics of environmental adaptable, and its internal timer is very rich in resources, but the current widely used progressive lights, especially for precise control more than the crossway control can be easily realized. So now increasingly applying PLC traffic light system. Meanwhi

10、le, PLC itself also has communication networking function, will the same path as part of a LAN signal unified dispatching management, can shorten the traffic wait times, realize scientific management. In real-time detection and automatic control of PLC application system, PLC is often used as a core

11、 components. In the 21st century, PLC will have greater development. Technically, the computer technology can morely new achievements used in programmable controller design and manufacturing, there will be faster, storage and larger capacity, intelligent stronger varieties appear; Look from product

12、size, can further to mini and super-large direction; Look from product compatibility, the variety of our products will be more rich, specification more complete, perfect man-machine interface and complete communication equipment can better adapt to all kinds of industrial control occasion demands; L

13、ook from the market, all countries to their production of multiple products with international competition intensifies and break, can appear a few brand monopoly international market situation, can appear international general programming languages; Judging from the development of the network, progr

14、ammable controller and other industrial control computer networking constitute a large control system is programmable controller technology development direction. The current computer distributed control system DCS has already a lot of programmable controller applications. Along with the development

15、 of computer network, the programmable controller as automation control network and international general network will be an important part of the industry and industry, the numerous fields outside play an increasing role. In China the increasing amount of motor vehicles, many big cities like Beijin

16、g, Shanghai, nanjing and other ground appeared traffic overload running condition, traffic accidents problem also more and more serious. And because the various special vehicles (such as an ambulance, 119 120 car, police and various special vehicle 110 in emergency situations, by red under limited to traffic bring a lot of inconvenience, even cause traffic accident. And now, most traffic lights at the same moment will appear two or more than two direction at the same time for the green situation, and increase the incidence of the traffic accide