Structural vibration frequency monitoring based on event camera | |
Lv, Yuanyuan1,2,3; Zhou, Liang1,3![]() ![]() | |
作者部门 | 光电跟踪与测量技术研究室 |
2024-08-01 | |
发表期刊 | MEASUREMENT SCIENCE AND TECHNOLOGY
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ISSN | 0957-0233;1361-6501 |
卷号 | 35期号:8 |
产权排序 | 1 |
摘要 | Compared with traditional cameras, event cameras (ECs) have the significant advantages of high temporal resolution, low data redundancy, and microsecond delay, which are beneficial in structural monitoring to extract the dense response of structures in both spatial and temporal dimensions. In this paper, the vibration frequency detection method based on ECs is studied. This study investigates vibration frequency detection methods based on ECs, and proposes two algorithms for vibration frequency detection based on event streams: marker tracking and event count. Experimental verification is conducted through forced vibration experiments. The results indicate that the event count method achieves high-precision measurement of vibration frequencies in the range of 10-190 Hz for different vibration scales, with a maximum relative error of 1% and an average relative error of 0.673%. The marker tracking method demonstrates a maximum relative error of 1.43% and an average relative error of 0.575% in frequency measurement for large-amplitude vibrations. However, as the amplitude decreases, the frequency measurement error increases. When the amplitude is less than 3 pixels, the frequency measurement error exceeds 30%, rendering the measurement results unreliable. This research provides technical support for high-precision structural vibration frequency monitoring and further expands the application of ECs in structural monitoring. |
关键词 | visual vibration measurement event cameras vibration frequency monitoring |
DOI | 10.1088/1361-6501/ad42bf |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:001222014400001 |
出版者 | IOP Publishing Ltd |
EI入藏号 | 20242116106596 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/97467 |
专题 | 光电跟踪与测量技术研究室 |
通讯作者 | Zhou, Liang |
作者单位 | 1.Xian Inst Opt & Precis Mech, Chinese Acad Sci, l7 Xinxi Rd, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Space Precis Measurement Technol, l7 Xinxi Rd, Xian, Peoples R China |
推荐引用方式 GB/T 7714 | Lv, Yuanyuan,Zhou, Liang,Liu, Zhaohui,et al. Structural vibration frequency monitoring based on event camera[J]. MEASUREMENT SCIENCE AND TECHNOLOGY,2024,35(8). |
APA | Lv, Yuanyuan,Zhou, Liang,Liu, Zhaohui,&Zhang, Haiyang.(2024).Structural vibration frequency monitoring based on event camera.MEASUREMENT SCIENCE AND TECHNOLOGY,35(8). |
MLA | Lv, Yuanyuan,et al."Structural vibration frequency monitoring based on event camera".MEASUREMENT SCIENCE AND TECHNOLOGY 35.8(2024). |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Structural vibration(2545KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 请求全文 |
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