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A platform for research: civil engineering, architecture and urbanism
Sound barrier anti-collapse monitoring method and monitoring device thereof
The invention discloses a sound barrier anti-collapse monitoring method and device, and the method comprises the steps: determining a block interval where a train is located through a track circuit, and starting sound barrier anti-collapse monitoring when the train enters a previous block interval of the block interval where the sound barrier is located; collecting the intensity of light pulses reflected by the distributed optical fiber vibration sensors on the screen body and the stand column of the sound barrier, and carrying out time domain analysis on the light pulses to obtain time domain signals of the horizontal acceleration of the screen body and the stand column; performing low-pass filtering processing on the time-domain acceleration signals of the screen body and the upright post to obtain horizontal acceleration time-domain signals of the screen body and the upright post under the excitation of the running train; analyzing the filtered acceleration time domain signal by adopting a random subspace method, a peak value pickup method, a frequency domain decomposition method or Hilbert-Huang transform to obtain the current natural vibration frequency of the screen body and the upright post; comparing the initial natural vibration frequency and the current natural vibration frequency of the screen body and the stand column, and determining whether the screen body and the stand column have collapse risks or not.
本发明公开了一种声屏障防倒塌监测方法及监测装置，监测方法包括采用轨道电路确定列车所在闭塞区间，当列车进入声屏障所在闭塞区间的上一个闭塞区间时，启动声屏障防倒塌监测；采集声屏障的屏体和立柱上的分布式光纤振动传感器反射的光脉冲强度，并对光脉冲进行时域分析，得到屏体和立柱水平加速度的时域信号；对屏体和立柱的时域加速度信号进行低通滤波处理，得到屏体和立柱在运行列车激励下的水平加速度时域信号；采用随机子空间法、峰值拾取法、频域分解法或者希尔伯特‑黄变换分析滤波后的加速度时域信号，得到屏体和立柱的当前自振频率；比较屏体和立柱的初始自振频率和当前自振频率，确定屏体和立柱是否存在倒塌风险。
Sound barrier anti-collapse monitoring method and monitoring device thereof
The invention discloses a sound barrier anti-collapse monitoring method and device, and the method comprises the steps: determining a block interval where a train is located through a track circuit, and starting sound barrier anti-collapse monitoring when the train enters a previous block interval of the block interval where the sound barrier is located; collecting the intensity of light pulses reflected by the distributed optical fiber vibration sensors on the screen body and the stand column of the sound barrier, and carrying out time domain analysis on the light pulses to obtain time domain signals of the horizontal acceleration of the screen body and the stand column; performing low-pass filtering processing on the time-domain acceleration signals of the screen body and the upright post to obtain horizontal acceleration time-domain signals of the screen body and the upright post under the excitation of the running train; analyzing the filtered acceleration time domain signal by adopting a random subspace method, a peak value pickup method, a frequency domain decomposition method or Hilbert-Huang transform to obtain the current natural vibration frequency of the screen body and the upright post; comparing the initial natural vibration frequency and the current natural vibration frequency of the screen body and the stand column, and determining whether the screen body and the stand column have collapse risks or not.
本发明公开了一种声屏障防倒塌监测方法及监测装置，监测方法包括采用轨道电路确定列车所在闭塞区间，当列车进入声屏障所在闭塞区间的上一个闭塞区间时，启动声屏障防倒塌监测；采集声屏障的屏体和立柱上的分布式光纤振动传感器反射的光脉冲强度，并对光脉冲进行时域分析，得到屏体和立柱水平加速度的时域信号；对屏体和立柱的时域加速度信号进行低通滤波处理，得到屏体和立柱在运行列车激励下的水平加速度时域信号；采用随机子空间法、峰值拾取法、频域分解法或者希尔伯特‑黄变换分析滤波后的加速度时域信号，得到屏体和立柱的当前自振频率；比较屏体和立柱的初始自振频率和当前自振频率，确定屏体和立柱是否存在倒塌风险。
Sound barrier anti-collapse monitoring method and monitoring device thereof
一种声屏障防倒塌监测方法及其监测装置
LIU QUANMIN (author) / LIANG HAOYU (author) / SONG LIZHONG (author) / LUO WENJUN (author) / CHENG GONG (author) / GUO WENJIE (author) / JING WENQIAN (author) / HUANG DAWEI (author)
2023-11-10
Patent
Electronic Resource
Chinese
IPC:
G01V
Geophysik
,
GEOPHYSICS
/
B61L
Leiten des Eisenbahnverkehrs
,
GUIDING RAILWAY TRAFFIC
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
G01H
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
,
Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen
| European Patent Office | 2018