Abnormity diagnosis system of passenger conveyer

Abstract

The invention provides an abnormity diagnosis system of passenger conveyer, which includes a mobile sound-collection device (15) and a fixed sound-collection device (17, 18) for collecting operation sound of escalator, and a data collection section (21) stored in a diagnostic equipment (20). A computation section (22) of the diagnostic equipment (20) computes the difference of sound data of escalator operation sound and reference data stored in the data collection section (21), and only the abnormal sound component of the escalator operation sound is abstracted. Farther, the arithmetic section (22) judges whether the maximum peak value P of the output waveform of abnormal sound component exceeds the prescribed threshold value Sh1 for determining abnormity. Farther, if an abnormity is judged to be existing, the arithmetic section (22) estimates the mutual relation between the frequency analysis result of data around the maximum peak value of the abnormal component and the preobtained abnormal audio rate pattern corresponding various abnormal reasons, and estimates abnormal reason according to the estimation result.

Description

technical field [0001] The present invention relates to an abnormality diagnosis system for diagnosing abnormalities of passenger conveyors such as escalators and moving walkways. Background technique [0002] Passenger conveyors such as escalators and moving walkways convey passengers riding on the steps by circularly moving a plurality of steps connected in a loop along guide rails arranged inside the truss. Once this kind of passenger conveyor breaks down, it often takes a lot of time to restore it. Therefore, once it breaks down, it will cause great trouble to the user. Therefore, it is hoped that the abnormality can be detected early at the stage when any abnormality occurs before the failure occurs, so that the abnormality can be eliminated through maintenance to avoid failure. [0003] Against such a background, Japanese Patent Application Laid-Open No. 2007-8709 (Patent Document 1) proposes a scheme in which a diagnosis device with an acceleration sensor or a microp...

AI Technical Summary

Problems solved by technology

[0004] However, in the technology disclosed in the aforementioned Patent Document 1, it is automatically determined whether there is an abnormality in the passenger conveyor, but the cause of the occurrence cannot be identified.

Therefore, there is a problem that when an abnormality is found in the passenger conveyor, maintenance personnel are required to go to the scene to investigate the condition of the passenger conveyor and determine the cause of the abnormality. It is also difficult to wait for necessary personnel and dispatch maintenance personnel to the site, which hinders the efficiency of maintenance work

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