【導讀】法來取代這種復雜而工作不穩(wěn)定的控制系統(tǒng)?，F(xiàn)今PLC技術飛快發(fā)展，應用越來。越廣，在工業(yè)自動化中的地位極為重要，廣泛的應用于各個行業(yè)。業(yè)中的作用更加突出。本論文就是運用PLC原理來實現(xiàn)對十字路口的交通燈的控。我們所設計出來的交通燈必須美觀、大方、經(jīng)濟適用、有多種變化，龍系列的PLC來控制紅綠燈的變化，經(jīng)過對現(xiàn)今交通燈控制系統(tǒng)進行實地考察，選擇一種最優(yōu)方案，用以在一定程度上緩解目前交通壓力。第二章PLC的基礎知識……第三章系統(tǒng)單元設計…………………第五章結論………

　　

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