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摘要:近100年以來，人類的科技文明成果超過了100年以前的整個(gè)文明史總和?？茖W(xué)正以前未所有的速度在進(jìn)步，科技月新日異，技術(shù)不斷更新，交通燈便是人類進(jìn)步中的一大發(fā)明。 隨著汽車的普及，城市的交通壓力越來越大，除了增加道路的建設(shè)，提高對(duì)道路的交通管理也成了重中之重。一個(gè)好的交通燈控制系統(tǒng)，將給道路擁擠、違章控制等方面給予技術(shù)革新。十字路口車輛穿梭，行人熙攘，車行車道，人行人道，有條不紊。如何能做到這樣？靠的是交通信號(hào)燈的自動(dòng)指揮系統(tǒng)。交通信號(hào)燈控制方式很多。本系統(tǒng)采用89系列單片機(jī)STC89C52為中心器件來設(shè)計(jì)交通燈控制器，實(shí)現(xiàn)了通過STC89C52芯片的P0、P2口設(shè)置紅、綠燈燃亮?xí)r間的功能；顯示時(shí)間通過STC89C52的P3、0 P3、1口輸出到七段數(shù)碼管顯示，它用簡(jiǎn)單的硬件電路模擬交通燈信號(hào)燈的交替變換，實(shí)現(xiàn)紅綠燈循環(huán)點(diǎn)亮。用LED數(shù)碼管作為倒計(jì)時(shí)指示。 在軟件方面運(yùn)用單片機(jī)匯編語言設(shè)置并控制信號(hào)燈的基本變化，同時(shí)實(shí)施處理個(gè)檢查裝置的輸入的數(shù)據(jù)，判斷產(chǎn)生對(duì)信號(hào)燈的變化控制以實(shí)現(xiàn)交通燈的設(shè)計(jì)模系統(tǒng)實(shí)用性強(qiáng)、操作簡(jiǎn)單、擴(kuò)展性強(qiáng)。 關(guān)鍵詞 :交通燈 ；單片機(jī)STC89C52 ；LED 七段數(shù)碼管
Abstract:In the last 100 years, human civilization achievements of science and technology of more than 100 years before the whole sum of civilization., Science is not all the speed before in progress . Science and technology constantly updated each month even each day. The traffic lights is one of the great inventions in human progress. With the popularity of the car, and the city's traffic pressure is bigger and bigger, in addition to increasing the road construction, improve the management of road traffic has also become a top priority. A good traffic control system, will give road congestion, illegal control to give technical innovation. Crossroads transports, bustling pedestrian, auto lane, a humanitarian, in an orderly way. How do you do this? By the traffic lights automatic command system. There are many ways to control the traffic lights. The system USES the 89 series microcontroller STC89C52 as the center device to designing traffic light controller, realized through the STC89C52 chip P0, P2 mouth set red, green lit the function of the time; Show time STC89C52 through the P3, 0 P3, 1 output to the mouth for seven digital pipe display, it with simple hardware circuit simulation traffic lights alternates alternately, realize the traffic light cycle lighted. Use LED digital tube as countdown instructions. In software using single chip assembly language Settings and control signal lamp basic change, at the same time implementing processing an inspection device of input data, judgment to the change of light produced in order to realize the design of the traffic control modeling system practical, simple operation and expandability. Key words: Traffic lights Single-chip microcomputer AT89C52 LED for seven digital tube
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