公开(公告)号：US20180245970A1

公开(公告)日：2018-08-30

申请号：US15901268

申请日：2018-02-21

申请人： KISTLER HOLDING AG

发明人： THOMAS WUHRMANN ,  ADRIAN HOFMANN ,  MANUEL AESCHBACHER

IPC分类号： G01G23/01 ,  G01G19/03 ,  G01G3/13

摘要： An apparatus for calibrating a weigh-in-motion (WIM) sensor embedded in a roadway includes an actuator, an applicator, a force sensor disposed between the actuator and the applicator, and a carriage supporting the actuator, the applicator and the force sensor, which carriage is selectively movable on a longitudinal support carried by a frame. The apparatus also includes a drive unit to move the applicator along the longitudinal support as well as a position sensor that detects a position of the calibration path relative to the WIM sensor. According to a method for calibrating a WIM sensor, the frame is positioned to straddle the WIM sensor. The applicator introduces along the calibration path at a succession of different positions, a reference force that is measured by the WIM sensor and the force sensor, and these measurements are compared to generate a calibration.