鎽� 瑕侊細绂忓楂橀€熷叕璺毀閬撶溇澶�锛屽湪鍦嬪収(n猫i)杓冪偤灏戣锛岄毀閬撶洠(ji膩n)鎺ч噰鐢≒LC浣滅偤鏈湴鎺у埗鍣ㄩ€�(j矛n)琛屾暩(sh霉)鎿�(j霉)閲囬泦鍜屼俊鎭櫦(f膩)甯�,鏁村€婸LC绯荤当(t菕ng)绲勭恫(w菐ng)鏂逛究锛岄亱(y霉n)琛屽彲闈�,閬�(d谩)鍒板苟婊胯冻瑷�(sh猫)瑷�(j矛)鐨勭洰鐨勫拰瑕佹眰銆� 闂�(gu膩n)閸佃锛�闅ч亾; 鐩�(ji膩n)鎺х郴绲�(t菕ng); 鏈湴鎺у埗鍣� Abstract: There鈥榬e many tunnels on FuNing freeway锛� which rarely happen in China銆� The tunnel monitored system utilizes PLC as the local controller to collect data and issue information锛宼he entire PLC network system can be pretty easily built up锛宱perate reliable, and well meet the design objective and requirement銆� Keywords: tunnel;monitored control system;local controller 1 寮曡█ 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