公开(公告)号：US10697821B2

公开(公告)日：2020-06-30

申请号：US15886891

申请日：2018-02-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Taro Imagawa ,  Akihiro Noda ,  Hiroya Kusaka

IPC: G01G23/01 ,  G01G9/00 ,  G01G19/02 ,  G01G19/08

Abstract: A calibration device is a calibration device configured to calibrate a load meter that measures an axle load of a vehicle. The calibration device includes a detector and a calibrator. The detector detects a displacement amount corresponding to displacement caused on a road by the axle load of the vehicle. The calibrator aggregates the displacement amounts detected by the detector to generate a histogram of the displacement amounts, and updates a displacement coefficient for calculating the axle load of the vehicle based on a shape of the histogram. The calibrator updates the displacement coefficient base only on the shape of the histogram corresponding to a first axle serving as a forefront axle of the vehicle.