| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an elevator abnormality diagnostic device for reducing wrong diagnoses resulting from a difference of elevator specifications. <P>SOLUTION: The elevator abnormality diagnostic device includes a waveform analysis part for generating analytical data obtained by analyzing waveform data of sound and vibrations detected in a basket 30 of an elevator, a multidimensional data generation part for generating multidimensional data obtained by associating the analytical data generated by the waveform analysis part on the elevator with specification data on the elevator of a diagnosis object, a Mahalanobis distance calculation part for calculating a Mahalanobis distance between a reference space composed of multidimensional data of an elevator with no abnormality and the multidimensional data generated by the multidimensional data generation part, and abnormality determination part for comparing the Mahalanobis distance calculated by the Mahalanobis distance calculation part with a prescribed threshold, determining that the elevator is abnormal when the Mahalanobis distance is larger than the threshold, and determines that the elevator is normal when the Mahalanobis distance is equal to or less than the threshold. <P>COPYRIGHT: (C)2013,JPO&INPIT |
