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Highly responsive co2 detection by an improved & compact gas sensor using mid-ir spectroscopy

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Show simple item record Rashidi Salim, Mohd Haniff Ibrahim, Mohd Izam Azmi, Asrul Yusof Mohd Noor, Muhammad Sharmi Abdullah, Ahmad Hafizah Ngajikin, Nor Manap, Hadi Dooly, Gerard Lewis, Elfed 2018-10-15T11:35:35Z 2018-10-15T11:35:35Z 2018
dc.description peer-reviewed en_US
dc.description.abstract An improved and compact gas sensor using mid-infrared spectroscopy for highly responsive Carbon Dioxide (CO2) detection is presented. The sensing principle is based on open-path direct absorption spectroscopy in the mid-infrared region. The improved reflective structure of optical gas sensor consists of low cost and compact components. Several gas cell configuration which includes SISO, 2-MISO, 4-MISO and 8-MISO were simulated using ZEMAX®12 using non-sequential ray tracing technique to get the optimum radius of the reflective curved surface. Sensitivity analysis has shown that the optimised structure of 4-MISO yields the highest sensitivity and power efficiency of -0.2895%-1 and 12.298% respectively. The developed gas sensing system using the optimised gas cell has shown the capability of accurately detecting CO2 concentration between 1.5% and 5.8% with no cross-sensitivity with other gases present in the gas cell. The newly developed CO2 sensor exhibits high responsivity with the recorded rise time and fall time of less than 1 second respectively. en_US
dc.language.iso eng en_US
dc.publisher Faculty of Electronic and Computer Engineering (FKEKK), Universiti Teknikal Malaysia Melaka (UTeM). en_US
dc.relation.ispartofseries Journal of Telecommunication, Electronic and Computer Engineering;10 (2-8)
dc.subject carbon dioxide sensor en_US
dc.subject mid-infrared en_US
dc.subject responsivity en_US
dc.subject spectroscopy en_US
dc.title Highly responsive co2 detection by an improved & compact gas sensor using mid-ir spectroscopy en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.contributor.sponsor Ministry of Higher Education (MOHE) en_US
dc.relation.projectid Q.J130000.2723.02K79 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2889973

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