A NDIR Mid-Infrared Methane Sensor with a Compact Pentahedron Gas-Cell

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dc.citation.articleNumber5461en_US
dc.citation.issueNumber19en_US
dc.citation.journalTitleSensorsen_US
dc.citation.volumeNumber20en_US
dc.contributor.authorYe, Weilinen_US
dc.contributor.authorTu, Zihanen_US
dc.contributor.authorXiao, Xupengen_US
dc.contributor.authorSimeone, Alessandroen_US
dc.contributor.authorYan, Jingwenen_US
dc.contributor.authorWu, Taoen_US
dc.contributor.authorWu, Fupeien_US
dc.contributor.authorZheng, Chuantaoen_US
dc.contributor.authorTittel, Frank K.en_US
dc.date.accessioned2020-10-21T18:16:22Zen_US
dc.date.available2020-10-21T18:16:22Zen_US
dc.date.issued2020en_US
dc.description.abstractIn order to improve the performance of the large divergence angle mid-infrared source in gas sensing, this paper aims at developing a methane (CH4) sensor with non-dispersive infrared (NDIR) technology using a compact pentahedron gas-cell. A paraboloid concentrator, two biconvex lenses and five planar mirrors were used to set up the pentahedron structure. The gas cell is endowed with a 170 mm optical path length with a volume of 19.8 mL. The mathematical model of the cross-section and the three-dimension spiral structure of the pentahedron gas-cell were established. The gas-cell was integrated with a mid-infrared light source and a detector as the optical part of the sensor. Concerning the electrical part, a STM32F429 was employed as a microcontroller to generate the driving signal for the IR source, and the signal from the detector was sampled by an analog-to-digital converter. A static volumetric method was employed for the experimental setup, and 20 different concentration CH4 samples were prepared to study the sensor’s evaluation, which revealed a 1σ detection limit of 2.96 parts-per-million (ppm) with a 43 s averaging time.en_US
dc.identifier.citationYe, Weilin, Tu, Zihan, Xiao, Xupeng, et al.. "A NDIR Mid-Infrared Methane Sensor with a Compact Pentahedron Gas-Cell." <i>Sensors,</i> 20, no. 19 (2020) MDPI: https://doi.org/10.3390/s20195461.en_US
dc.identifier.doihttps://doi.org/10.3390/s20195461en_US
dc.identifier.urihttps://hdl.handle.net/1911/109441en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citeden_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordinfrared spectroscopyen_US
dc.subject.keywordmid-infrared sensoren_US
dc.subject.keywordNDIRen_US
dc.subject.keywordpentahedron gas-cellen_US
dc.titleA NDIR Mid-Infrared Methane Sensor with a Compact Pentahedron Gas-Cellen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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