基于信度分析判别路面平整度检测设备速度影响性的方法

Methods for Judging Speed Influence of Pavement Flatness Detection Device Based on Reliability Analysis

在调研国内外路面平整度检测设备的基础上,分析各类检测设备的技术特征和数据特征,选取主流的响应类检测设备进行速度影响性判定。首先对该设备不同行驶速度下左右侧轮迹的检测数据进行顺时曲线展现,接着进行信度系数计算与分析,计算结果符合数据展现的整体趋势,即左侧轮迹检测数据受速度影响性较大,右侧很小,进一步通过不同速度下各项目检测数据相关性的分析,表明左侧轮迹80 km/h下的检测数据与任何一项检测数据的相关性均较低。因此,在产生数据需求时应考虑行驶速度对车载设备数据采集准确度的影响,该方法计算结果可作为相应设备使用效果和状态受速度影响性判别的依据。

The technical characteristics and data characteristics of various types of testing device are analyzed based on the investigation of pavement flatness testing device at home and abroad.Mainstream responsive testing device is selected to determine the speed influence.Firstly,the detection data of left and right wheel traces at different running speeds of the device is displayed in a time-series curve,then the reliability coefficient is calculated and analyzed.The calculation result conforms to the overall trend shown by the data,that is,the left wheel trace detection data is influenced by speed larger,and the right side is very small.Through further analysis of the correlation of test data of different items at different speeds,the result shows that the correlation between detection data of the left wheel and anyone test data is low at 80 km/h.Therefore,the influence of speed on the data acquisition accuracy of on-board device should be considered when data demand arises.The result of this method can be used as a basis of determining speed influence for using effect and status of appropriate device.