音・振動センシングによるエスカレーター診断(J19 製品ライフサイクルとメンテナンス)

概要

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This paper proposes an escalator step called the sensor step on which physical sensors are installed. The purpose of the sensor step is diagnosis of escalators by sound and vibration.sensing for effective maintenance. First, a method of detecting the sensor step position is described by using the accelerometer output to specify the fault point. Second, it is studied that the difference of the sensor data between normal and fault conditions. If a fault occurs on a rail, the power spectrum of envelope of vibration signal has peaks related to the distance between steps. It is also observed that the time - frequency distribution has the peak around the fault point by a loose chain. This results show that the sensor step is effective for diagnosing the escalator.
社団法人日本機械学会の論文
2004-09-04