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×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ Ä¿ ¼ ÕªÒª 1 Abstract 2 1 ÒýÑÔ 1 2 PLC»ù´¡ÖªÊ¶¼ò½é 2 2.1 PLCµÄ·¢Õ¹Àú³Ì 2 2.2 PLCµÄ¹¹³É 2 2.3 CPUµÄ¹¹³É 3 2.4 I/OÄ£¿é 3 2.5 µçÔ´Ä£¿é 4 2.6 µ×°å»ò»ú¼Ü 4 2.7 PLCϵͳµÄÆäËüÉ豸 4 2.8 PLCµÄͨÐÅÁªÍø 4 3 ÌâÄ¿·ÖÎö±à³Ì·½°¸ 6 3.1 ÌâÄ¿¿ÉÐÐÐÔ·ÖÎö 6 3.2 ³µÁ¾µÄ´æÔÚÓëͨ¹ýµÄ¼ì²â 6 3.2.1 ¸ÐÓ¦ÏßȦ(µç¸Ðʽ´«¸ÐÆ÷ 6 3.2.2 µç· 7 3.2.3 Ó²¼þÅäÖà 7 3.2.4 ³µÁ¾¼ÆÊý 14 3.3 ÓÃPLCʵÏÖÖÇÄܽ»Í¨µÆ¿ØÖÆ 15 3.3.1 ¿ØÖÆϵͳµÄ×é³É 15 3.3.2 ³µÁ÷Á¿µÄ¼ÆÁ¿ 15 4 ÖÇÄܽ»Í¨ÏµÍ³PLC±à³Ì 17 4.1 Ê®×Ö·¿Ú½»Í¨ÐźŵƿØÖÆϵͳµÄ¿ØÖÆÒªÇó 17 4.2 ¿ØÖÆϵͳµÄ¿ØÖÆÒªÇó 18 4.2.1 Õý³£Ñ­»·ÔËÐÐ 18 4.2.2 ¼±³µÇ¿Í¨¿ØÖÆ 20 4.3 Ê®×Ö·¿Ú½»Í¨ÐźŵƿØÖÆϵͳµÄPLCÑ¡ÐÍ 22 4.3.1 ¿ØÖÆϵͳµÄ¹¹³Éͼ 22 4.3.2 Ê®×Ö·¿Ú½»Í¨ÐźŵƿØÖÆϵͳµÄ×ÊÔ´·ÖÅä 23 4.4 ³ÌÐòʱÐòͼ 26 5 ³ÌÐò±à³ÌºÍµ÷ÊÔ 28 5.1 ±à³ÌÈí¼þ¼ò½é 28 5.1.1 »­Ãæ¹¹³É¼°¸÷²¿Ãû³Æ 28 5.1.2 PLC³ÌÐòµ÷ÊÔ 29 5.2 ³ÌÐòµ÷ÊÔ 31 5.2.1 Ä£Äⶨʱѭ»·¿ØÖÆ 32 5.2.2 Ä£Äⶨʱµ÷Õû¿ØÖÆ 32 5.3 Ô´³ÌÐò£¨¼û¸½Â¼ 33 5.3.1 ÖÇÄܽ»Í¨ÏµÍ³PLCÉè¼Æ³ÌÐò£¨¼û¸½Â¼A 33 5.3.2 ÖÇÄܽ»Í¨ÏµÍ³Ä£Äⶨʱ³ÌÐò£¨¼û¸½Â¼B£© 33 5.3.3 ÖÇÄܽ»Í¨ÏµÍ³Ä£Äâµ÷Õû³ÌÐò£¨¼û¸½Â¼C£© 33 6 ½áÂÛ 34 ¸½Â¼A 35 ¸½Â¼B 40 ¸½Â¼C 40 ²Î¿¼ÎÄÏ× 41 ÖÂл 42 ÍâÎÄÎÄÏ×Ô­Îļ°ÒëÎÄ 1 ÍâÎÄÎÄÏ×Ô­ÎÄ 1 ÒëÎÄ 11 ÕªÒª Ä¿Ç°¹úÄÚÊ®×Ö·¿ÚµÄ½»Í¨µÆ¿ØÖÆÒ»°ãÊǶ¨Ê±Çл»¿ØÖƵġ£ÔÚµ±½ñ¸ßËÙ·¢Õ¹µÄÉç»áÀ½»Í¨ÎÊÌâ³ÉΪ´ó¼Ò¹Ø×¢µÄÉç»áÎÊÌ⣬Æû³µÊýÁ¿µÄÖ±ÏßÉÏÉý¼°ÏÖÓеĶ¨Ê±Çл»¿ØÖƽ»Í¨·½Ê½µÄ¾ÖÏÞÐÔ¶¼Ê¹µÃÎÒÃÇÓбØҪѰÇóÒ»ÖÖÖÇÄܵĽ»Í¨¿ØÖÆϵͳ£¬»ùÓڴ˱¾ÂÛÎĵÄ˼·ÊÇ:ͨ¹ý̽²âÆ÷(¼´µç´Å¸ÐÓ¦ÏßȦ)̽²â³öÆû³µµÄÁ÷Á¿ºó×Ô¶¯µ÷½ÚºìÂ̵ƵÄʱ³¤¡£³µÁ¾µÄÁ÷Á¿¼ÇÊý¡¢½»Í¨µÆµÄʱ³¤¿ØÖÆ¿ÉÓɿɱà³Ì¿ØÖÆÆ÷(PLC)À´ÊµÏÖ¡£ ¹Ø¼ü´Ê ÖÇÄܽ»Í¨£¬Ì½²â£¬³µÁ÷Á¿£¬¿É±à³Ì¿ØÖÆÆ÷ Abstract At present ,our country traffic lights control generally is timing.In now high speed develop of society, the traffic problem becomes the social problem that everybody pay attention to, the car quantity runs high straightly and the timing control of the traffic lights exist the bug to all make that us have necessity to look for a kind of intellective transportation control system . According to the way of thinking of this thesis is: the hours of the traffic lights are automatically regulated after the locators(namely electromagnetic induction coil) have explored a discharge of the vehicle .The discharge of the vehicle records the number and the long control in hour of the traffic light can be come by PLC to realize. Keywords intelligence traffic£¬Detection£¬Number cars£¬PLC
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