{"title":"Axial multipoint laser Doppler velocimetry based on grating guidance","authors":"Qiuyuan Yu, Bohan Liu, Zhenhua Cong, Zhaojun Liu, Xiao Zhang, Luoyuan Qu, Shaojie Men","doi":"10.1007/s00340-024-08267-0","DOIUrl":null,"url":null,"abstract":"<div><p>Laser Doppler velocimetry (LDV) technology is highly favored in the field of speed measurement for its high accuracy and resolution. However, it has limitations in specific applications due to its single-point speed measurement capability. To address this issue, a method of axial multi-point laser Doppler velocimetry is proposed to expand the application range of this technology. This method is based on the dual-beam laser Doppler velocimetry mode, utilizing the diffraction characteristics of the reflected grating to achieve spatial separation of measurement points axially. To verify the feasibility of the method, a laser Doppler velocimetry system was constructed, enabling velocity measurements at three axial points within a range of 0–14 m/s, with an average measurement error of less than 4%. Measurements of water flow velocity in a water tank pipeline were conducted, and compared with a standard electronic flowmeter, resulting in an average relative error of approximately 0.77%.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"130 7","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00340-024-08267-0","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Laser Doppler velocimetry (LDV) technology is highly favored in the field of speed measurement for its high accuracy and resolution. However, it has limitations in specific applications due to its single-point speed measurement capability. To address this issue, a method of axial multi-point laser Doppler velocimetry is proposed to expand the application range of this technology. This method is based on the dual-beam laser Doppler velocimetry mode, utilizing the diffraction characteristics of the reflected grating to achieve spatial separation of measurement points axially. To verify the feasibility of the method, a laser Doppler velocimetry system was constructed, enabling velocity measurements at three axial points within a range of 0–14 m/s, with an average measurement error of less than 4%. Measurements of water flow velocity in a water tank pipeline were conducted, and compared with a standard electronic flowmeter, resulting in an average relative error of approximately 0.77%.
期刊介绍：
Features publication of experimental and theoretical investigations in applied physics
Offers invited reviews in addition to regular papers
Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more
94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again
Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field.
In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
