There is provided a method for detecting anomalies along a railway track (20), the method comprising detecting, by a fiber optic sensor (21), at least one first sensor signal (F) for a measurement section (22) of the fiber optic sensor (21), the fiber optic sensor (21) being arranged along the railway track (20), after detecting the first sensor signal (F), the fiber optic sensor (21) being coupled to the measurement section (22) of the fiber optic sensor (21). At least one second sensor signal (S) is detected by the fiber optic sensor (21) for the measurement section (22), a first difference signal (FD) is determined, the first difference signal (FD) being dependent on a difference between an average sensor signal (AS) and the first sensor signal (F), the average sensor signal (AS) being dependent on a difference between the average sensor signal (AS) and the first sensor signal (F) before the detection of the first sensor signal (F), and the second sensor signal (F) being dependent on the difference between the average sensor signal (AS) and the first sensor signal (F). A second difference signal (SD) is determined by the fiber optic sensor (21) relating to an average value of previous sensor signals detected by the measurement section (22), the second difference signal (SD) relating to a difference between the average sensor signal (AS) and the second sensor signal (S), and an alarm signal (AL) is provided if a confidence condition is met, the confidence condition at least requires that both the first difference signal (FD) and the second difference signal (SD) are greater than a predetermined threshold signal, or the confidence condition at least requires that both the absolute value of the first difference signal (FD) and the absolute value of the second difference signal (SD) are greater than a predetermined threshold signal. Furthermore, an apparatus (24) for detecting anomalies along a railway track (20) is provided.
提供了一种用于检测沿铁路轨道(20)的异常的方法,该方法包括由光纤传感器(21)针对该光纤传感器(21)的测量段(22)检测至少一个第一传感器信号(F),该光纤传感器(21)沿铁路轨道(20)布置,在检测第一传感器信号(F)之后,由光纤传感器(21)针对测量段(22)检测至少一个第二传感器信号(S),确定第一差信号(FD),其中,第一差信号(FD)与平均传感器信号(AS)和所述第一传感器信号(F)之间的差相关,其中,平均传感器信号(AS)与在检测第一传感器信号(F)之前,由光纤传感器(21)针对测量段(22)检测的先前传感器信号的平均值相关,确定第二差信号(SD),其中,第二差信号(SD)与平均传感器信号(AS)和第二传感器信号(S)之间的差相关,以及在置信条件被满足的情况下提供报警信号(AL),其中,置信条件至少要求第一差信号(FD)和第二差信号(SD)均大于预定的阈值信号,或置信条件至少要求第一差信号(FD)的绝对值和第二差信号(SD)的绝对值均大于预定的阈值信号。此外,提供了一种用于检测沿铁路轨道(20)的异常的设备(24)。
Method and apparatus for detecting anomalies along railway track
用于检测沿铁路轨道的异常的方法与设备
30.05.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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