机动车地感线圈测速系统现场测速误差测量结果的不确定度评定

Evaluation of Uncertainty in Measurement Result of Field Velocity Error of Traffic Loop-based Speed Meters

机动车地感线圈测速系统是指固定安装在道路上,通过测量机动车经过一组(两个或两个以上的地感线圈)按一定距离埋设在路面下的相同规格感应线圈的时间差,计算得出机动车的行驶速度,并自动记录该机动车的图像、速度、日期、时间、地点等相关信息的监测系统[1-2]。此文对地感线圈测速系统进行了现场测速误差测得值的不确定度评定。

Traffic loop-based speed meters refers to a time difference that is fixedly mounted on a road and measures the same specification induction coil buried under the road surface by a set of two( two or more ground-sensing coils). A monitoring system that calculates the traveling speed of the motor vehicle and automatically records the relevant information such as the image,speed,date,time,and location of the motor vehicle. In this paper,the uncertainty of the field velocity measurement error measurement is evaluated for the loop-based speed meters.