【正文】 題 目： 基于 FX 系列 PLC 的交通燈控制 設(shè)計(jì) 學(xué) 院： 物理學(xué)院 專 業(yè)： 測(cè)控技術(shù)與儀器 姓 名： 程犇 指導(dǎo)教師： 朱成果 完成日期： 2020 年 5 月 26 日 I 摘 要 可編程序控制器在工業(yè)自動(dòng)化中的地位極為重要，廣泛的應(yīng)用于各個(gè)行業(yè)。隨著科技的發(fā)展，可編程控制器的功能日益完善，加上小型化、價(jià)格低、可靠性高，在現(xiàn)代工業(yè)中的應(yīng)用更加突出。城市交通燈控制采用的可編程制器具有可靠性高、 維護(hù)方便 ， 應(yīng)用 簡(jiǎn)單 、通用性強(qiáng)等諸多優(yōu)點(diǎn)。 本文 介紹了一種 用三菱 FX2N的可編程 控制器控制十字路口 信號(hào)燈 的 硬件 、 軟件的設(shè)計(jì) 。解決好公路交通燈控制問題將是保障交通有序、安全、快捷運(yùn)行的重要環(huán)節(jié) ， 但現(xiàn)在有的交通信號(hào)燈控制系統(tǒng)都是單一的固定時(shí)序控制，不能夠根據(jù)實(shí)際交通狀況進(jìn)行調(diào)節(jié) 控制。三菱系列的可編程序控制器和傳感技術(shù)來實(shí)現(xiàn)對(duì)交通燈的智能信號(hào)控制?？捎萌缦路桨竵砜刂平煌窙r ： 制作傳感器探測(cè)車輛數(shù)量來控制交通燈的時(shí)長(zhǎng)。具體如下 ： 在入路口的各個(gè)方向附近的地下按要求埋設(shè)感應(yīng)線圈，當(dāng)汽車經(jīng)過時(shí)就會(huì)產(chǎn)生渦流損耗，環(huán)狀絕緣電線的電感開始減少，即可檢測(cè)出汽車的通過，并將這一信號(hào)轉(zhuǎn)換為標(biāo)準(zhǔn)脈沖信號(hào)作為可編程控制器的控制輸入，并用 PLC 計(jì)數(shù)，按一定控制規(guī)律自動(dòng)調(diào)節(jié)紅綠燈的時(shí)長(zhǎng)。 關(guān)鍵詞 ： PLC（可編程序控制器）； 三菱 FX2N； 傳感器探測(cè) ； 交通燈 II Abstract The variable procedure controller is in industry automate the position is extremely important, extensive application in each profession. Along with the development of science and technology, the function of the programmable controller is increasingly perfect, plus small scaled turn, the price is low, the credibility is high, the application that is in modern industry is more outstanding. The city transportation light control adopts programmable to make the tool contain high credibility, the maintenance convenience, the method of using is simple, the in general use strong etc. characteristics, this text uses the design that the programmable controller of the Mitsubishi FX2N control intersections conveyance light explains the programmable controller hardware software. Resolve the good highway transportation light control problem will is guarantee the transportation contain preface, safety, fast movement of important link. But the transportation signal beacon control systems have now are all the single and fixed cycle times controls, can39。t carry on regulating the control according to the actual transportation condition enough. The programmable preface controller of the Mitsubishi series and spread the feeling technique to carry out the intelligence signal control toward the transportation light. Can use as follows the project controls the transportation situation on road: the creation spreads the feeling machine to probe into the vehicle quantity the hour of control the transportation light is long. In a specific way and as follows: The at go the into the underground of the each the direction neighborhood the of the street corner the to lay the to respond the coil the according to the trequest, the be the automobile to the pass by the will produce the to flow the to exhaust, the wreath the form insulates the electricity the feeling of the electric the wire to start reduce, can immediately examine pass of an automobile, and convert this signal control importation that is the programmable controller for the standard pulse signal, counteract the PLC to count, long by the hour that the certain control regulation regulates the traffic lights automatically. Keywords： PLC( Programmable Logical Controller)。 Trapezoid。 diagram。 Instruction In proper order function diagram Transportation light 2 目錄 一、 緒論 1 1 1 2 二、 可編程程序控制器（ PLC） 3 概述 3 （ 1） PLC 的發(fā)展歷程 3 （ 2） PLC 的發(fā)展趨勢(shì) 4 （ 3） PLC 的應(yīng)用 5 的硬件結(jié)構(gòu)