Monitoring an Odour in the Environment with an Electronic Nose: Requirements for the Signal Processing

Abstract

Abstract:Artificial olfaction system (the so-called electronic nose) is a very promising tool to monitor the malodour in the field. Usual measurement techniques of odour use human olfaction or conventional analytical techniques. The first category represents the real odour perception but is not applicable to measure continuously bad odours in the field. The second class of techniques gives the mixture composition but not the global information representative of the odour perception. The e-nose has the potentialities to combine "the odour perception" and the "monitoring in the field". However to be able to reach that goal, the signal processing has to be adapted to work in complex environment. The research group in Arlon has more than ten years experience in the measure of environmental malodours in the field. The paper presents the minimal requirements that the group considers as essential for artificial olfaction system to become successful for this application.

Study on Interference Suppression Algorithms for Electronic Noses: A Review

“…Sensors are critical to the detection performance of an e-nose, so the selected sensors should have good reliability, robustness, high cross-sensitivity, and selectivity [ 15 ]. However, there are a number of limitations in e-nose which are associated with the properties of gas sensors and the signal processing methods [ 16 , 17 , 18 ]. These limitations make the e-noses face a serious problem of interference.…”

Chemical Mass Balance Model Applied to an Olfactory Annoyance Problematic

“…Senso-instrumental systems (also called electronic noses) have the advantage of providing answers in real time. Their main role is to follow the time evolution of an odor emission clearly identified to trigger alerts and corrective actions. − Chemical analyses focus on families of chemical compounds typically associated with odor (compounds containing sulfur, nitrogen, or oxygen functional groups), allowing a comprehensive identification, even at trace level concentrations. Several uses of chemical analysis are possible: characterizations of emission sources only or environmental monitoring of source tracers .…”

Perception of Odour Pollution Impact from Waste Treatment Plant on Health, Psychology and Physiology of Sensitive Receivers

“…The scope of odour studies is not limited to impact on general well-being as noted by Nicell and Tsakaloyannis (2003), NRCCO (1979) and Shusterman (1992). Studies also covered perception issues (Sakawi et al, 2011;Whitherspoon and Barnes, 2009) origin and source of odour (Applied Environmental Research Centre, 2001;Sironi et al, 2005;Stern, 2007), sampling and analysis of odour (Zarra et al, 2009;Sironi et al, 2007;Sakawi et al, 2011;Davoli et al, 2003;Romain and Nicolas, 2009;Drew et al, 2007); and odour control (Morcet et al, 2003;Chen et al, 2003;Otieno and Magagula, 2001;Fukuyama, 2004;Iwasaki, 2004;Bedogni and Resola, 2002;Hurst, 2005).…”