【正文】 最后，再次對關(guān)心、幫助我的老師和同學(xué)表示衷心地感謝!
37。通過老師的不斷指導(dǎo)，使我對自己的選題有了更深刻的認(rèn)識，并且收獲的不僅僅是知識方面的，高老師的治學(xué)態(tài)度于我也是一筆財富，我會好好珍惜這次收獲的。謝 辭在高貴老師的精心指導(dǎo)和大力支持下，我才得以完成這篇論文?；陔娮有畔⒌闹悄芙煌艨刂葡到y(tǒng)可實現(xiàn)3種顏色燈的交替點亮，通過信息提示指揮車輛和行人安全通行，并能實時監(jiān)測交通燈工作狀態(tài)。我們常見到交通通信線路上交錯的線纜和繁多待測器件，然而在集成的電子信息技術(shù)下的虛擬測量系統(tǒng)不但使測量人員從繁復(fù)的儀器堆中解放出來，而且還可實現(xiàn)自動測量、自動記錄、自動數(shù)據(jù)處理。尤其電子信息技術(shù)支撐下的虛擬儀器技術(shù)功能強大，可實現(xiàn)示波器、邏輯分析儀、頻譜儀、信號發(fā)生器等多種普通儀器全部功能，配以專用探頭和軟件還可檢測特定系統(tǒng)的參數(shù)，如汽車發(fā)動機參數(shù)、汽油標(biāo)號、爐窯溫度、血液脈搏波、心電參數(shù)等多種數(shù)據(jù)；它操作靈活，完全圖形化界面，風(fēng)格簡約，符合傳統(tǒng)設(shè)備的使用習(xí)慣，用戶不經(jīng)培訓(xùn)即可迅速掌握操作規(guī)程；它集成方便，不但可以和高速數(shù)據(jù)采集設(shè)備構(gòu)成自動測量系統(tǒng)，而且可以和控制設(shè)備構(gòu)成自動控制系統(tǒng)。電子信息技術(shù)的快速發(fā)展使其在智能交通燈控制應(yīng)用方面越來越廣泛，這主要是由于其技術(shù)的優(yōu)勢所決定，即用戶可以通過電子定義自己的專用儀器系統(tǒng)，且功能靈活，很容易構(gòu)建，所以應(yīng)用極為廣泛，尤其在科研、開發(fā)、測量、檢測、計量、測控等領(lǐng)域更是不可多得的好工具。按照是否加入智能算法可以將交通信號燈控制策略分為2種：傳統(tǒng)控制策略、智能控制策略。隨著智能性交通燈控制系統(tǒng)的出現(xiàn)給這些問題提供了解決的可能性，即用智能算法來解決交通控制問題。例如其參數(shù)設(shè)定工作的龐大，且控制器需要隨交通情況的改變有規(guī)則地進行更新；它對于意外事件的處理并不完善，一旦意外事件發(fā)生就需要對系統(tǒng)進行大量的手工修改。再如針對可重復(fù)事件，引入表來記錄特殊情況的設(shè)定。并且提出了信號燈偏移量，即定義一個周期相對于其他交通信號燈周期開始時間的偏移量。為了解決固定周期控制器的種種弊端，人們對其做了各種改進。實際生活中多用固定周期控制器，這一固定周期控制器會帶來交通信號燈控制系統(tǒng)實現(xiàn)的簡單化，但也會帶來交通通行時間的極度浪費化。3 交通信號燈控制策略及電子信息化的重要性分析交通信號燈控制策略的目的是解決交通流問題，并利用各種算法來最小化車輛的旅程花費。這樣，一方面避免了數(shù)據(jù)傳輸?shù)膯栴}，另一方面可以充分地利用計算機的存儲功能。（5）使硬件測試設(shè)備與計算機之間的數(shù)據(jù)交流變得非常方便、直接和迅速。（4）自定義儀器功能。（2）由計算機來完成顯示、存儲、打印及微處理器控制管理等，即無論任何功能的儀器可利用或共享計算機的這些公共資源，而無需重復(fù)的設(shè)計。以這種方式構(gòu)成的虛擬儀器系統(tǒng)實質(zhì)上就是計算機儀器系統(tǒng)，從某種意義上來說，“軟件就是儀器”。虛擬儀器通過友好的圖形界面操作這臺計算機，就像在操作自己定制的一臺傳統(tǒng)儀器一樣。虛擬儀器系統(tǒng)中的硬件僅僅是為了解決信號的調(diào)理和輸入輸出。虛擬儀器是由計算機、應(yīng)用軟件和儀器硬件組成的。虛擬儀器突破了傳統(tǒng)電子儀器以硬件為主體的模式，實際上是一種基于計算機的自動化測試儀器系統(tǒng)。2 基于電子信息技術(shù)的虛擬儀器技術(shù)發(fā)展及應(yīng)用分析基于電子信息技術(shù)的虛擬儀器技術(shù)是新世紀(jì)科學(xué)技術(shù)中的核心技術(shù)之一，它包含了計算機技術(shù)、自動控制技術(shù)、信息技術(shù)、電子技術(shù)等多方面。隨著電子信息技術(shù)的迅猛發(fā)展，其相關(guān)的虛擬儀器技術(shù)在數(shù)據(jù)采集、自動測試和儀器控制領(lǐng)域得到廣泛應(yīng)用，使測試系統(tǒng)和測量控制的設(shè)計方法與實現(xiàn)技術(shù)發(fā)生了深刻的變化。研究車輛的通行規(guī)律，根據(jù)實際情況制定相應(yīng)的通行規(guī)則對緩解交通阻塞，提高路口車輛通行的效率具有非常重要的現(xiàn)實意義。s intelligent traffic light control system, passes through safely through the information cue direction vehicles and the pedestrian, and can the realtime monitor traffic light active status. This system not only programs is simple, is nimble, has the high reliability, moreover the cost is low, has the good economic efficiency. 電子信息技術(shù)在智能交通信號燈控制中的應(yīng)用1 引言城市化進程的日益加快和汽車的日益普及，事故頻發(fā)、交通擁擠加劇、路況日益惡化，交通問題已經(jīng)成為困擾全世界的嚴(yán)重問題。s widespread application, the traditional instrumentation equipment lacks the corresponding puter connection, thus the coordination data acquisition and the data processing are very difficult, moreover, the traditional instrument volume is relatively huge, many kinds of data surveys often feel have too many problems to tackle, helpless. We often see on the transportation munication link the staggered line cable and many testing ponents, not only however causes the survey crews under the integrated electronic information technology39。s use custom, the user then rapidly does not grasp the working instruction after training。s parameter by the specialpurpose probe head and the software, like motor car engine parameter, gasoline marking, dry kiln temperature, blood pulse wave, heart electrical parameter and so on many kinds of data。s superiority decided that namely the user may define own specialpurpose instrument system through the electron, and the function is flexible, very easy to construct, therefore the application is extremely widespread, especially in domains and so on scientific research, development, survey, examination, measurement, observation is the rare good tool. The electronic information technological advance, conforms to internationally popularly “the hardware software” trend of development, thus is often called as “the software instrument”. Especially under the electronic information technology support39。s core algorithm includes: Fuzzy logic, genetic algorithm, ine barrel algorithm, improvement strengthening learning algorithm, neural network and these algorithm different bination and optimization. The electronic information technology39。s appearance to these questions, namely solves the traffic control problem with the intelligent algorithm. Such intelligent system may not use the consideration control circulation, how was the decision making decided by at that time the transportation street intersection real situation, like this might a more precise control. According to whether to join the intelligent algorithm to be possible to divide into the streettraffic control lights control policy 2 kinds: Tradition control policy, intelligent control strategy. And the tradition control policy includes: Fixed cycles, longest Waiting line, relatively longest Waiting line control policy and so on。 It is imperfect regarding accident39。s focal point is green when the patibility, perhaps control circulation order. In practical life multipurpose fixed cycle controller, this fixed cycle controller can bring the simplification which the streettraffic control lights control system realizes, but will also bring the transportation general time the extreme waste. Because its green light recursive sequence is certain, does not consider the transportation information, therefore certainly will have such situation occurrence: In a street intersection not the how much vehicles actually longtime when holds is green, in other street intersection has many vehicles are actually unable to obtain are green when can only passive be at the waiting status. In order to solve fixed cycle controller39。s goal is the solution hands over the through flow question, and using each algorithm minimum vehicles39。s memory or the hard disk directly through the puter main line, for the later analysis use. Thus, on the one hand has avoided the data transmission question, on the other hand may use puter39。s these public resources, but does not need the design which is redundant(3) The modulation, openness, the interchangeable characteristic and the resources duplication, and may convenient, set up either the restructuring automated test system economically, the user may according to own need to select and purchase the modular instrument with different function, and may along with the test assignm