【導(dǎo)讀】隨著社會經(jīng)濟的發(fā)展,城市交通問題。越來越引起人們的關(guān)注。人、車、路三者關(guān)系的協(xié)調(diào),已成為交通管理部門需要解決。而PLC的飛速發(fā)展,使其在工業(yè)控制中得到了廣泛應(yīng)用,但是目前國內(nèi)利用PLC. 實現(xiàn)交通信號燈自動控制還不是十分廣泛。本設(shè)計重點討論用PLC實現(xiàn)對十字路口交。東西南北的紅、黃、綠、左綠燈實現(xiàn)有規(guī)律的循環(huán)閃亮,以達到對交通信號燈的控制。制對象的控制,本系統(tǒng)具有高可靠性、高性能和智能化的特點。第2章系統(tǒng)總體方案設(shè)計················································3. 設(shè)計內(nèi)容及要求····················································3. 第3章PLC控制系統(tǒng)設(shè)計················································6. 確定I/O信號數(shù)量,選擇PLC類型····································6. I/O地址的分配與編號···············································6