计量学报2025，Vol.46Issue(9)：1356-1363,8.DOI:10.3969/j.issn.1000-1158.2025.09.16
光电挠度仪动态校准方法的研究
Research on Dynamic Calibration Methods for Photoelectric Deflectometers
摘要
Abstract
To achieve dynamic calibration of the photoelectric deflection meter to ensure the accuracy of dynamic deflection measurements,a non-contact dynamic calibration method based on a display screen was investigated.The feasibility of using a dynamic light spot generated on the display screen to replace the traditional LED target of the photoelectric deflection meter and simulate dynamic displacement was analyzed.The structure of the calibration device,the calibration method,and its principles were described.Experiments were conducted,and the measurement results were analyzed in terms of the maximum value of dynamic deflection,vibration frequency,and the mapping relationship between deflections in the X and Y directions.The experimental results showed that at a distance of 10 m,the relative error between the maximum deflection measured by the photoelectric deflection meter and the standard maximum deflection was no more than 3%;at a distance of 50 m,the relative error was no more than 4%.After Fourier transform analysis,the frequency corresponding to the measured maximum amplitude was consistent with the actual vibration frequency.The method can accurately and conveniently achieve dynamic calibration of the photoelectric deflection meter.关键词
挠度测量/光电挠度仪/动态校准/显示光斑/最大挠度/振动频率/桥梁健康Key words
deflection measurements/photoelectric deflectometer/dynamic calibration/dynamic light spot/maximum deflection/vibration frequency/bridge health分类
通用工业技术引用本文复制引用
常玄,康瑶,李连福,李建双,占春连,缪东晶,尹琳..光电挠度仪动态校准方法的研究[J].计量学报,2025,46(9):1356-1363,8.基金项目
国家市场监督管理总局科技计划项目(2024MK195) （2024MK195）
国家市场监督管理总局质量技术基础能力建设(ANL2404) （ANL2404）
