J. Ni, Jun Chang, Tong-yu Liu, Yanfang Li, Yanjie Zhao, Qian Wang
{"title":"光纤甲烷气体传感器及其在煤矿瓦斯突出预测中的应用","authors":"J. Ni, Jun Chang, Tong-yu Liu, Yanfang Li, Yanjie Zhao, Qian Wang","doi":"10.1109/APOS.2008.5226294","DOIUrl":null,"url":null,"abstract":"Fiber optic methane gas detecting system based on distributed feedback (DFB) laser wavelength scanning technique is demonstrated. Wavelength scan of methane absorption peak at 1665.9 nm is realized by saw tooth modulation of current which is injected to DFB laser. A reference methane gas cell is used to find the methane absorption peak around 1666 nm, and normalization is used to reduce the outside affection such as power drift, fiber loss. Concentration is got by arithmetic processing absorption coefficient of the methane gas. In-situ test is carried out in coalmine and long time precision of 0.05% is achieved. Some spot data of coal mine is introduced. By the system, methane outburst can be measured.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"27","resultStr":"{\"title\":\"Fiber methane gas sensor and its application in methane outburst prediction in coal mine\",\"authors\":\"J. Ni, Jun Chang, Tong-yu Liu, Yanfang Li, Yanjie Zhao, Qian Wang\",\"doi\":\"10.1109/APOS.2008.5226294\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Fiber optic methane gas detecting system based on distributed feedback (DFB) laser wavelength scanning technique is demonstrated. Wavelength scan of methane absorption peak at 1665.9 nm is realized by saw tooth modulation of current which is injected to DFB laser. A reference methane gas cell is used to find the methane absorption peak around 1666 nm, and normalization is used to reduce the outside affection such as power drift, fiber loss. Concentration is got by arithmetic processing absorption coefficient of the methane gas. In-situ test is carried out in coalmine and long time precision of 0.05% is achieved. Some spot data of coal mine is introduced. By the system, methane outburst can be measured.\",\"PeriodicalId\":154236,\"journal\":{\"name\":\"2008 1st Asia-Pacific Optical Fiber Sensors Conference\",\"volume\":\"17 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2008-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"27\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2008 1st Asia-Pacific Optical Fiber Sensors Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APOS.2008.5226294\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APOS.2008.5226294","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Fiber methane gas sensor and its application in methane outburst prediction in coal mine
Fiber optic methane gas detecting system based on distributed feedback (DFB) laser wavelength scanning technique is demonstrated. Wavelength scan of methane absorption peak at 1665.9 nm is realized by saw tooth modulation of current which is injected to DFB laser. A reference methane gas cell is used to find the methane absorption peak around 1666 nm, and normalization is used to reduce the outside affection such as power drift, fiber loss. Concentration is got by arithmetic processing absorption coefficient of the methane gas. In-situ test is carried out in coalmine and long time precision of 0.05% is achieved. Some spot data of coal mine is introduced. By the system, methane outburst can be measured.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
