3382 十字路口交通信號燈PLC控制系統(tǒng)設(shè)計,十字路口,交通,信號燈,plc,控制系統(tǒng),設(shè)計 I摘 要隨著社會的發(fā)展和進步以及人民生活水平的提高，上路的車輛越來越多，但相應(yīng)的公路設(shè)施卻沒有相應(yīng)的改善，這就導(dǎo)致了城市交通擁堵問題突出，而且擁堵的地方多是十字路口等車輛匯集處。如何改善交通燈控制系統(tǒng)，以適應(yīng)現(xiàn)在的交通狀況，成為競相研究的課題，本文對該問題給予了深刻地研究。本文十字路口交通燈控制系統(tǒng)主要用于處理十字路口車輛及行人通過的問題，使其減少相互干擾，提高了十字路口的通行能力。本文總結(jié)了交通燈控制技術(shù)的發(fā)展，討論了基于 PLC 的十字路口交通信號燈控制系統(tǒng)的設(shè)計可行性。根據(jù) PLC 的工作原理并結(jié)合城市交通的實際狀況，本文提出了以三菱公司生產(chǎn)的 FX2N-128MT-001 型 PLC 作為基本控制核心，安排了四個方向的直行、左轉(zhuǎn)紅黃綠燈，人行道紅綠燈以及倒計時數(shù)碼管的具體配置；設(shè)計完成了PLC 的 I/O 端口分配和控制程序；探索了基于紅外遙控的十字路口交通信號燈的無線強通控制方案并設(shè)計了具體的硬件電路及軟件控制程序。關(guān)鍵詞：十字路口；信號燈；PLC；三菱；無線控制器IIABSTRACTAs the development of society and the advance in people’s living standard, More and more vehicles drive on road, meanwhile, road facilities corresponding haven’t got improved, which leads to the prominent of traffic jam. What’s more, traffic jams appear mainly at the gathering area of vehicles such as crossroad. How to improve the current traffic system becomes a hot point to research, and the paper revealed it deeply. Traffic light control system is mainly used to process passing of vehicles and pedestrians, reducing interference between vehicles and to promote the traffic capacity. The paper summarized the development of traffic light control technology and discussed the feasibility of crossroad traffic signal light control system based on PLC. According to the PLC work principle and practical situation of crossroad, the paper presents FX2N-128MT-001 of Mitsubishi Corporation as control core, making arrangements of red, yellow, green light for straight going and for left-face; red， green light on sidewalk and figure manifestation of count down. Completed I/O port-settings and control procedure of PLC. The paper also searched the project of crossroad traffic signal light based on infrared remote control and designed the specific hardware circuit and software control programs. Keywords: crossroad; traffic light; PLC; Mitsubishi Corporation; remote controller