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Locomen always knock tracks with hammers to detect loose screws,cracksof tracks and the invalid gadgets of trains.They usually judge the conditions of tracks by the sound of knocking.However,the listening skill of detecting tracks needs accumulation of experience for a long time,and locomen need some attempts to know the exist of problems, which is inefficient.”Easy to Detect”is a testing hammer in whose interiorthere is a acoustic detectiondevice.When the sound is abnormal,it will record and analysis the change of sound frequencies by resonancetheory.After dealing, the warning light will twinkle to alert locomen.
Dalian Minzu University
Dalian Nationalities University