PROBLEM TO BE SOLVED: To provide an elevator abnormal sound diagnostic system that classifies waveforms of sounds collected by a microphone to extract an abnormal waveform.SOLUTION: An elevator abnormal sound diagnostic system includes: a frequency analysis part 13 for analyzing frequencies of waveforms acquired from a microphone 1; a period analysis part 14 for analyzing periods of the frequencies classified in the frequency analysis part 13; a waveform extraction part 16 for extracting sequential waveforms, periodic waveforms and a single waveform based on analyses of the frequency analysis part 13 and the period analysis part 14; an operation waveform detection part 21 for comparing waveforms according to elevator operation states stored in a measured waveform storage part 19 with the waveform extracted in the waveform extraction part 16 thereby to determine a waveform not stored in the measured waveform storage part 19 to be an abnormal waveform; and an abnormal waveform detection part 23 for determining being abnormal if the abnormal waveform stored in the operation waveform detection part 21 is among a plurality of abnormal waveforms stored in a comparison waveform storage part 24.SELECTED DRAWING: Figure 1
【課題】マイクで集音した音の波形に対し、波形を弁別して異常波形を抽出するエレベーターの異常音診断装置を提供する。【解決手段】マイク1から取得した波形を周波数解析する周波数解析部13と、周波数解析部13で弁別した複数周波数の周期解析を行う周期解析部14と、周波数解析部13と周期解析部14の解析にて連続波形と周期波形と単一波形を抽出する波形抽出部16と、測定波形格納部19に記憶されるエレベーター稼働状況に応じた波形と波形抽出部16で抽出した波形を比較し、測定波形格納部19に記憶されていない波形を異常波形とする稼働波形検出部21と、稼働波形検出部21に記憶した異常波形が、比較波形格納部24に格納される複数の異常時波形に存在するとき、異常と判定する異常波形検出部23と、を備えたものである。【選択図】図1
ELEVATOR ABNORMAL SOUND DIAGNOSTIC SYSTEM
エレベーターの異常音診断装置
2016-06-23
Patent
Electronic Resource
Japanese
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