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Gardner, J. W.; Wei, G.; Vincent, Timothy A.; Volans, K.; Tremlett, P.; Wotherspoon, T.; Dyer, David (2015)
Publisher: Elsevier
Journal: Procedia Engineering
Languages: English
Types: Article
Subjects: Engineering(all), TA
A novel low power, miniature gas sensor measuring system is presented for application in harsh environmental conditions, i.e. to detect carbon monoxide and oxygen at temperatures of up to +225oC and high relative humidities up to 95%. The gas sensors are fabricated using SOI high temperature technology and two full custom ASICs are embedded into a high-temperature circuit board interfaced to a low-cost general purpose microcontroller. The sensor system has been developed for a CO concentration range of 0 to 300 ppm, O2 concentration range of 0 to 21%, and monitors the humidity and temperature of the gas, as well as operating temperatures of micro-heaters within the two MOX gas sensors. Feedback control is built into the program of the micro-controller to compensate for temperature dependence of gas sensors. Preliminary experiments show promising results for the intended application within domestic boilers.\ud
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] F. Udrea, S.Z. Ali, M. Brezeanu, V.Dumitru, O.Buiu, et al, SOI sensing technologies for harsh environment. IEEE 2012 International Semiconductor Conference 1 (2012) 3-10.
    • [2] H. Cheng, X. Ren, S. Ebadi, Y. Chen, L. An, X. Gong, Wireless Passive temperature sensors using integrated cylindrical resonator/antenna for harsh-environment applications, IEEE Sensors Journal, 2015,15(3): 1453-1462.
    • [3] A. De Luca, V. Pathirana, S.Z. Ali, D. Dragomirescu, F. Udrea, Experimental, analytical and numerical investigation of non-linearity of SOI diode temperature sensors at extreme temperatures. Sensors and Actuators A 222 (2015), 31-38.
    • [4] B.J.D. Furnival, S.K. Roy, K.V. Vassilevski, N.G. Wright, A.B. Horsfall, C.J. O'Malley, CMOS compatible gas sensor arrays for hostile environments, IEEE Sensors Conference (2012) 1-4.
    • [5] D. Nowark, S. Sawicki and A. Dziedzic, High temperature LTCC package for gas sensor, IEEE International Students and Young Scientists Workshop, (2010) 64-65.
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