{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,23]],"date-time":"2025-12-23T10:30:49Z","timestamp":1766485849887,"version":"build-2065373602"},"reference-count":12,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2017,2,15]],"date-time":"2017-02-15T00:00:00Z","timestamp":1487116800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper aims at solving the problem of explosion proof in measurement of thermal gas flow using electronic sensor by presenting a new type of flow sensor by optical fiber heating. A measuring unit based on fiber Bragg grating (FBG) for fluid temperature and a unit for heat dissipation are designed to replace the traditional electronic sensors. The light in C band from the amplified spontaneous emission (ASE) light source is split, with one part used to heat the absorbing coating and the other part used in the signal processing unit. In the heating unit, an absorbing coating is introduced to replace the traditional resistance heating module to minimize the risk of explosion. The measurement results demonstrate a fine consistency between the flow and temperature difference in simulation. The method to enhance the measurement resolution of flow is also discussed.<\/jats:p>","DOI":"10.3390\/s17020374","type":"journal-article","created":{"date-parts":[[2017,2,15]],"date-time":"2017-02-15T10:09:07Z","timestamp":1487153347000},"page":"374","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Optical Sensor of Thermal Gas Flow Based on Fiber Bragg Grating"],"prefix":"10.3390","volume":"17","author":[{"given":"Xu","family":"Jiang","sequence":"first","affiliation":[{"name":"College of Information Science and Technology, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keda","family":"Wang","sequence":"additional","affiliation":[{"name":"Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Electronic Engineering College, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junqing","family":"Li","sequence":"additional","affiliation":[{"name":"Physics Department, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hui","family":"Zhan","sequence":"additional","affiliation":[{"name":"Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Electronic Engineering College, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenan","family":"Song","sequence":"additional","affiliation":[{"name":"Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Electronic Engineering College, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guohang","family":"Che","sequence":"additional","affiliation":[{"name":"Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Electronic Engineering College, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guohui","family":"Lyu","sequence":"additional","affiliation":[{"name":"Research Center for Fiber Optic Sensing Technology National Local Joint Engineering, Electronic Engineering College, Heilongjiang University, Harbin 150080, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,2,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"994","DOI":"10.1088\/0022-3735\/21\/10\/017","article-title":"Thermal mass-flow meter","volume":"21","author":"Huijsing","year":"1988","journal-title":"J. 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Fiber-optic thermal anemometer based on metallic coated fiber Bragg grating. Proceedings of the OFS2012 22nd International Conference on Optical Fiber Sensors, Beijing, China.","DOI":"10.1117\/12.970514"},{"key":"ref_9","first-page":"563","article-title":"On the convenction of heat from small cylinders in a stream of fluid Determination of the convenetion constants of small platinum wires with application to hot wires anemometry","volume":"214","author":"King","year":"1914","journal-title":"Proc. R. Soc. Lond. Ser. 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