To obtain a railroad wheel tread abnormality detection system that can detect wheel tread abnormalities at a low cost even when detecting wheel tread abnormalities for many wheels.SOLUTION: A railroad wheel tread abnormality detection system 1A comprises: a frequency analysis section 10A that converts a vibration sensor signal measured by a vibration sensor installed on a rail into a first time signal indicating the signal intensity for each frequency band; a joint vibration removal section 40A that calculates a second time signal obtained by removing a signal of vibration caused by a rail joint from a corresponding signal corresponding to the first time signal; a tread abnormality detection section 80A that determines the presence or absence of wheel tread abnormality from the second time signal; and an output section 90 that outputs a determination result of the tread abnormality detection section 80A. When the signal intensity of a third time signal including the frequency of the vibration caused by the rail joint extracted from the corresponding signal exceeds a specific value, the joint vibration removal section 40A calculates the second time signal by removing the third time signal from the corresponding signal.SELECTED DRAWING: Figure 1
【課題】多数の車輪に対して車輪踏面異常を検知する場合であっても低コストで車輪踏面異常を検知することができる鉄道車輪踏面異常検知システムを得ること。【解決手段】鉄道車輪踏面異常検知システム1Aが、レールに設置された振動センサによって計測された振動センサ信号を周波数帯毎の信号強度を示す第1の時間信号へと変換する周波数解析部10Aと、第1の時間信号に対応する対応信号からレール継ぎ目に起因する振動の信号を除去した第2の時間信号を算出する継ぎ目振動除去部40Aと、第2の時間信号から車輪踏面異常の有無を判定する踏面異常検出部80Aと、踏面異常検出部80Aの判定結果を出力する出力部90と、を備え、継ぎ目振動除去部40Aは、対応信号から抽出したレール継ぎ目に起因する振動の周波数を含む第3の時間信号の信号強度が特定値を超える場合に対応信号から第3の時間信号を除去することで第2の時間信号を算出する。【選択図】図1
RAILROAD WHEEL TREAD ABNORMALITY DETECTION SYSTEM, RAILROAD WHEEL TREAD ABNORMALITY DETECTION METHOD, AND RAILROAD WHEEL TREAD ABNORMALITY DETECTION PROGRAM
鉄道車輪踏面異常検知システム、鉄道車輪踏面異常検知方法、および鉄道車輪踏面異常検知プログラム
2024-11-21
Patent
Electronic Resource
Japanese
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen |
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