To provide a railroad crossing alarm sound monitoring device which can detect a railroad crossing alarm sound with good accuracy.SOLUTION: In a railroad crossing alarm sound monitoring device 1, an MPU3 determines whether an acoustic pressure of a sound detected by an acoustic pressure sensor 60 provided near a railroad crossing alarm exceeds a measurement start threshold, and calculates a threshold for detection of a cycle of an alarm sound on the basis of a maximum value and a minimum value of the acoustic pressure detected by the acoustic pressure sensor 60 within prescribed time after determining that the acoustic pressure has exceeded the measurement start threshold.SELECTED DRAWING: Figure 4
【課題】踏切の警報音を精度良く検出することができる踏切警報音監視装置を提供する。【解決手段】踏切警報音監視装置1は、MPU3が、踏切警報機の近傍に設けられた音圧センサ60が検出した音の音圧が測定開始閾値を超えたか判定し、測定開始閾値を超えたと判定してから所定時間内に音圧センサ60が検出した音圧の最大値及び最小値に基づいて警報音の周期検出用の閾値を算出する。【選択図】図4
RAILROAD CROSSING ALARM SOUND MONITORING DEVICE
踏切警報音監視装置
2022-06-30
Patent
Electronic Resource
Japanese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |