{"title":"一种简单、低成本的非色散红外CO/sub /监测仪","authors":"Song Chen, T. Yamaguchi, K. Watanabe","doi":"10.1109/SFICON.2002.1159816","DOIUrl":null,"url":null,"abstract":"A non-dispersive infrared (NDIR) CO/sub 2/ monitor is developed for air quality assessment, The NDIR CO/sub 2/ sensor consists of one IR source, a pipe in which IR beam interacts with CO/sub 2/ molecules in the air, and a beam splitter terminated by two thermopiles with optical band-pass windows. One thermopile measures the spectrum absorption due to CO/sub 2/ molecules, while the other monitors the light emission level of the IR source. The signal processing electronics take the ratio between the outputs of the two detectors to make the CO/sub 2/ concentration measurement insensitive to the aging of the IR source and temperature. The ratio is a nonlinear function of CO/sub 2/ concentration and the cubic spline function is used for the linearization and the calibration. A prototype monitor demonstrates performances quite satisfactory for practical applications.","PeriodicalId":294424,"journal":{"name":"2nd ISA/IEEE Sensors for Industry Conference,","volume":"98 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"A simple, low-cost non-dispersive infrared CO/sub 2/ monitor\",\"authors\":\"Song Chen, T. Yamaguchi, K. Watanabe\",\"doi\":\"10.1109/SFICON.2002.1159816\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A non-dispersive infrared (NDIR) CO/sub 2/ monitor is developed for air quality assessment, The NDIR CO/sub 2/ sensor consists of one IR source, a pipe in which IR beam interacts with CO/sub 2/ molecules in the air, and a beam splitter terminated by two thermopiles with optical band-pass windows. One thermopile measures the spectrum absorption due to CO/sub 2/ molecules, while the other monitors the light emission level of the IR source. The signal processing electronics take the ratio between the outputs of the two detectors to make the CO/sub 2/ concentration measurement insensitive to the aging of the IR source and temperature. The ratio is a nonlinear function of CO/sub 2/ concentration and the cubic spline function is used for the linearization and the calibration. A prototype monitor demonstrates performances quite satisfactory for practical applications.\",\"PeriodicalId\":294424,\"journal\":{\"name\":\"2nd ISA/IEEE Sensors for Industry Conference,\",\"volume\":\"98 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2nd ISA/IEEE Sensors for Industry Conference,\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SFICON.2002.1159816\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2nd ISA/IEEE Sensors for Industry Conference,","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SFICON.2002.1159816","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A simple, low-cost non-dispersive infrared CO/sub 2/ monitor
A non-dispersive infrared (NDIR) CO/sub 2/ monitor is developed for air quality assessment, The NDIR CO/sub 2/ sensor consists of one IR source, a pipe in which IR beam interacts with CO/sub 2/ molecules in the air, and a beam splitter terminated by two thermopiles with optical band-pass windows. One thermopile measures the spectrum absorption due to CO/sub 2/ molecules, while the other monitors the light emission level of the IR source. The signal processing electronics take the ratio between the outputs of the two detectors to make the CO/sub 2/ concentration measurement insensitive to the aging of the IR source and temperature. The ratio is a nonlinear function of CO/sub 2/ concentration and the cubic spline function is used for the linearization and the calibration. A prototype monitor demonstrates performances quite satisfactory for practical applications.
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