Probe Vehicles Used to Measure Road Ride Quality Pilot Demonstration
Probe Vehicles Used to Measure Road Ride Quality Pilot Demonstration
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DOI：
10.3141/2304-18
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发表时间：
2012-01-01
影响因子：
1.7
通讯作者：
Medina-Flintsch, Alejandra
中科院分区：
文献类型：
--
作者：
Flintsch, Gerardo W.;Valeri, Stephen M.;Medina-Flintsch, Alejandra
新的车辆技术正在催生评估国家公路系统状况的有效方法。使用安装在车辆上的简单传感器（例如加速度计）可以提供一种经济有效的方法来评估路面管理的行驶质量。一项试点研究将从加速度计收集的数据与当前测量乘坐质量的最先进实践进行比较。在回顾了之前涉及探测车辆的相关研究后，本研究评估了使用探测车辆的加速度测量来评估路面轮廓。获得了具有互相关性和标准偏差的加速度测量的重复性。利用视觉方法和相干函数，将加速度测量值与惯性轮廓仪获得的轮廓测量值进行比较。文献综述强化了这样的观点，即使用探测车辆收集路面状况数据将是有前途的，并且使用典型的车载传感器测量路面状况可以提供一种经济高效的方式来收集路面管理数据。探测车辆最常用于路面管理应用，通过使用车辆加速度计和全球定位系统来描述行驶质量。试点研究证实加速运行是可重复的。加速度和轮廓图的目视检查表明加速度轮廓和平滑度测量结果相似。相干函数的分析也证实了这种强烈的关系。与惯性轮廓仪相比，经过测试的方法提供了一种评估平滑度的实用方法，同时提供了更广泛的覆盖范围。
New vehicle technology is leading to efficient methods for assessing the condition of the National Highway System. The use of simple sensors such as accelerometers, installed in vehicles, could provide a cost-effective way to assess ride quality for pavement management. A pilot study compared data gathered from accelerometers with the current state-of-the-art practices for measuring ride quality. After a review of relevant previous studies involving probe vehicles, this study assessed the use of probe vehicles' acceleration measurements to evaluate the pavement profile. The repeatability of acceleration measurements with cross-correlation and standard deviation was obtained. With visual methods and the coherence function, acceleration measurements were compared with profile measurements obtained from inertial profilers. The literature review reinforced the view that using probe vehicles for pavement condition data collection would be promising and that measuring pavement condition with typical onboard sensors could provide a cost-effective way to collect data for pavement management. Probe vehicles are most practically used in pavement management applications to describe ride quality by using vehicle accelerometers and the Global Positioning System. The pilot study confirmed that the acceleration runs were repeatable. Visual inspection of the acceleration and profile plots suggested that the acceleration profiles and smoothness measurements were similar. Analysis with the coherence function also confirmed this strong relationship. The tested methodology provides a practical way to evaluate smoothness while providing a wider base of coverage compared with that of inertial profilers.