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High-speed trains are one of the most impressive developments of the recent years having brought a new degree of comfort for travelers. These train posed serious accidents because of the high level of vibration, which they can generate. In the present paper a smart vibration sensor is developed which is a self-sensation device equipped with recording and wireless communication interface. One programmed microcontroller 89C52 is used, which record vibration of trains with real time into memory.There is certain limit of vibrations, which is acceptable by track. Beyond this limit track can be damaged and may result major casualty.