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    • 7. 发明授权
    • DETECTING TRAIN SEPARATION
    • 检测列车分离
    • EP2809565B1
    • 2017-05-31
    • EP13703872.5
    • 2013-02-01
    • OptaSense Holdings Limited
    • KELLEY, John
    • B61L15/00B61L1/16B61L1/14
    • G01N29/4454B61L1/14B61L1/166B61L5/12B61L5/206B61L15/00B61L15/0054G01H9/004G01N29/07G01N2291/011G01N2291/023G01N2291/025
    • This application describes method and apparatus for detecting train separation, where one or more railway cars/carriages (401) accidentally decouple from the rest of the train. The method involves performing distributed acoustic sensing on at least one optical fibre (104a, 104b) to provide a plurality of longitudinal acoustic sensor portions along the railway (201). The acoustic response is analysed to detect a signature indicative of a train separation. This may involve detecting acoustic events (302, 303) associated with different parts of the train and detecting when the separation between the two events exceeds a threshold amount. The method may identify the front of the train and the rear of the train and detect when the distance between the front and rear changes by more than a threshold amount and/or sounds associated with wheelsets passing track features (402) may be used to determine the intervals (T3, T4) between wheelsets of adjacent cars and determine when the interval exceeds a threshold amount. The threshold may be based on the interval (T2) between wheelsets of the same car passing the track feature.
    • 本申请描述了用于检测列车分离的方法和设备,其中一个或多个铁路车厢/小车(401)意外地与列车的其余部分分离。 该方法包括对至少一个光纤(104a,104b)执行分布式声学感测以沿着铁路(201)提供多个纵向声学传感器部分。 分析声学响应以检测指示列车分离的签名。 这可能涉及检测与列车的不同部分相关联的声学事件(302,303)并检测两个事件之间的间隔何时超过阈值量。 该方法可以识别列车的前部和列车的后部并且检测前部和后部之间的距离变化超过阈值量的时间和/或与经过轨道特征(402)的轮副相关联的声音可以用于确定 相邻轿厢的轮对之间的间隔(T3,T4),并确定间隔何时超过阈值量。 该阈值可以基于经过轨道特征的同一汽车的轮对之间的间隔(T2)。
    • 9. 发明申请
    • Detecting Train Separation
    • 检测火车分离
    • US20150000415A1
    • 2015-01-01
    • US14375906
    • 2013-02-01
    • OPTASENSE HOLDINGS LIMITED
    • John Kelley
    • G01N29/44B61L5/12B61L15/00B61L5/20G01H9/00G01N29/07
    • G01N29/4454B61L1/14B61L1/166B61L5/12B61L5/206B61L15/00B61L15/0054G01H9/004G01N29/07G01N2291/011G01N2291/023G01N2291/025
    • This application describes method and apparatus for detecting train separation, where one or more railway cars/carriages (401) accidentally decouple from the rest of the train. The method involves performing distributed acoustic sensing on at least one optical fibre (104a, 104b) to provide a plurality of longitudinal acoustic sensor portions along the railway (201). The acoustic response is analysed to detect a signature indicative of a train separation. This may involve detecting acoustic events (302, 303) associated with different parts of the train and detecting when the separation between the two events exceeds a threshold amount. The method may identify the front of the train and the rear of the train and detect when the distance between the front and rear changes by more than a threshold amount and/or sounds associated with wheelsets passing track features (402) may be used to determine the intervals (T3, T4) between wheelsets of adjacent cars and determine when the interval exceeds a threshold amount. The threshold may be based on the interval (T2) between wheelsets of the same car passing the track feature.
    • 本申请描述了用于检测列车分离的方法和装置,其中一个或多个铁路车辆/车厢(401)意外地与列车的其余部分分离。 该方法涉及在至少一根光纤(104a,104b)上执行分布式声学感测以沿着铁路(201)提供多个纵向声学传感器部分。 分析声学响应以检测指示列车间隔的签名。 这可以涉及检测与列车的不同部分相关联的声学事件(302,303),并且检测两个事件之间的间隔何时超过阈值量。 该方法可以识别列车的前部和列车的后部,并且检测前后的距离何时改变超过阈值量和/或与轮对通过轨道特征(402)相关联的声音可以用于确定 相邻轿厢的轮对之间的间隔(T3,T4),并确定间隔何时超过阈值。 阈值可以基于通过轨道特征的同一车辆的轮对之间的间隔(T2)。