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Sensors 2013, 13(6), 7079-7103; doi:10.3390/s130607079
Article

A Novel Solid State Non-Dispersive Infrared CO2 Gas Sensor Compatible with Wireless and Portable Deployment

*  and
Received: 8 April 2013; in revised form: 14 May 2013 / Accepted: 17 May 2013 / Published: 29 May 2013
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in the UK 2013)
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Abstract: This paper describes development of a novel mid-infrared light emitting diode (LED) and photodiode (PD) light source/detector combination and use within a non-dispersive infrared (NDIR) carbon dioxide gas sensor. The LED/PD based NDIR sensor provides fast stabilisation time (time required to turn on the sensor from cold, warm up, take and report a measurement, and power down again ≈1 second), longevity (>15 years), low power consumption and low cost. Described performance is compatible with “fit and forget” wireless deployed sensors in applications such as indoor air quality monitoring/control & energy conservation in buildings, transport systems, horticultural greenhouses and portable deployment for safety, industrial and medical applications. Fast stabilisation time, low intrinsic power consumption and cycled operation offer typical energy consumption per measurement of mJ’s, providing extended operation using battery and/or energy harvesting strategies (measurement interval of ≈ 2 minutes provides >10 years operation from one AA battery). Specific performance data is provided in relation to measurement accuracy and noise, temperature performance, cross sensitivity, measurement range (two pathlength variants are described covering ambient through to 100% gas concentration), comparison with NDIR utilizing thermal source/pyroelectric light source/detector combination and compatibility with energy harvesting. Semiconductor based LED/PD processing together with injection moulded reflective optics and simple assembly provide a route to low cost high volume manufacturing.
Keywords: CO2 sensor; energy harvesting; demand control ventilation; indoor air quality; portable gas sensors; mid infrared light emitting diodes; mid infrared photodiodes CO2 sensor; energy harvesting; demand control ventilation; indoor air quality; portable gas sensors; mid infrared light emitting diodes; mid infrared photodiodes
This 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 cited.

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MDPI and ACS Style

Gibson, D.; MacGregor, C. A Novel Solid State Non-Dispersive Infrared CO2 Gas Sensor Compatible with Wireless and Portable Deployment. Sensors 2013, 13, 7079-7103.

AMA Style

Gibson D, MacGregor C. A Novel Solid State Non-Dispersive Infrared CO2 Gas Sensor Compatible with Wireless and Portable Deployment. Sensors. 2013; 13(6):7079-7103.

Chicago/Turabian Style

Gibson, Desmond; MacGregor, Calum. 2013. "A Novel Solid State Non-Dispersive Infrared CO2 Gas Sensor Compatible with Wireless and Portable Deployment." Sensors 13, no. 6: 7079-7103.


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