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首页> 外文会议>International conference on transportation and development >Railroad Track Irregularities Position Accuracy Assessments Using Low-Cost Sensors on a Hi-Rail Vehicle
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Railroad Track Irregularities Position Accuracy Assessments Using Low-Cost Sensors on a Hi-Rail Vehicle

机译：在高铁车辆上使用低成本传感器进行铁轨不平顺位置精度评估

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Regular maintenance of railroad tracks is not only essential for the proper functioning of the railway, but also significantly improves ride quality, reduces track damage, and increases track life. Deviations from the designed track geometry can result in poor ride quality and possible derailments. This research investigates the potential use of low-cost sensors aboard hi-rail vehicle to monitor automatically and continuously for inertial events caused by irregular track geometry. However, the GPS receivers of low-cost sensors do not always provide reliable position information, mostly due to signal occlusion, multipath interference, and low update rates. This study introduces a signal processing and statistical method to estimate the position of peak inertial events from multiple traversals and furthermore, the study characterizes and validates its accuracy by comparing the estimated positions of detected irregularities with the actual positions of irregularities that the railroad inspector observed.
机译：定期维护铁轨不仅对铁路的正常运行至关重要，而且还可以显着提高行驶质量，减少铁轨损坏并延长铁轨寿命。偏离设计的轨道几何形状可能会导致行驶质量不佳并可能出轨。这项研究调查了在高铁轨车辆上使用低成本传感器来自动连续监测由不规则轨道几何形状引起的惯性事件的潜在用途。但是，低成本传感器的GPS接收器并不总是提供可靠的位置信息，这主要是由于信号遮挡，多径干扰和低更新率所致。这项研究引入了一种信号处理和统计方法，以从多个遍历估计峰值惯性事件的位置，此外，该研究还通过比较检测到的不规则位置的估计位置与铁路检查员观察到的不规则位置的实际位置来表征和验证其准确性。

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