公开(公告)号：US20240264031A1

公开(公告)日：2024-08-08

申请号：US18564990

申请日：2022-04-02

Applicant: RESEARCH INSTITUTE OF HIGHWAY MINISTRY OF TRANSPORT

Inventor： Genqiang JING ,  Lu PENG ,  Bing ZHANG ,  Hongbo GUO

IPC: G01M5/00

CPC classification number: G01M5/0041 ,  G01M5/0008

Abstract: A passive excitation-based online calibration method for a bridge structural monitoring system, comprising: taking a dynamic load of a normal passing vehicle of a bridge as a passive excitation source to act on a bridge structure; an RS and an SMS to be calibrated continuously and synchronously acquiring strain data of the bridge structure, and forming measurement data sequences according to time sequencing; calculating an instantaneous measurement error, a period measurement error, and a basic error of the SMS according to the measurement data sequences respectively acquired by the RS and the SMS to be calibrated; and taking the instantaneous measurement error, and/or the period measurement error, and/or the basic error as a calibration basis to perform online calibration on the metrology performance of the SMS.