倾角传感器在线校准的激励源影响性分析

doi:10.3969/j.issn.1000-1158.2019.04.04

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Abstract Sensors are key units of bridge health monitoring (BHM) systems for data collection. However, their measuring performance cannot be easily verified in situ for the absence of proper excitation sources and methods. An online calibrating method is presented which aims at using the load combination by traffic vehicles as an excitation source. To verify the impacts of excitation characteristics on the stability of calibrating results, an experiment is designed with input deflection step length ranging from 0 to 10mm and variation period being 5s, 10s, 15s and 20s. The experiment is performed on a simply supported beam bridge model under random excitation simulated by a programmable linear module. Hypothesis testing is conducted with the experimental results, which shows that given the significance level 0.05, the deflection amplitude and period of excitation source have no effect on calibrating results of the sensors.

Key words： metrology bridge health monitoring online calibration tilt sensor excitation source

Received: 14 January 2019 Published: 10 June 2019

PACS:

TB922

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	Articles by authors
	JING Gen-qiang
	DUAN Fa-jie
	LI Jian-shuang
	LUO Zhu

Cite this article:

JING Gen-qiang,DUAN Fa-jie,LI Jian-shuang, et al. Statistical Analysis on the Impacts of Excitation Sources on Tilt Sensors Online Calibration[J]. Acta Metrologica Sinica, 2019, 40(4): 563-568.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.04.04 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I4/563

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