| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an abnormal sound detection device for an elevator, capable of easily distinguishing an abnormal sound from a normal sound. <P>SOLUTION: The abnormal sound detection device for an elevator, which diagnoses the abnormal state of the elevator on the basis of a sound generated or propagated in a hoistway, includes abnormal sound analysis learning means for analyzing the frequency of the sound collected within a prescribed time limit to determine a frequency spectrum, and extracting the frequency band of a peak appearing at the frequency spectrum, and abnormal sound diagnosis means for diagnosing the generation of an abnormal sound when there is a frequency band other than that of a normal sound detected in the extracted frequency band beforehand to be stored in a storage unit. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
