WiFi electronic nose for indoor air monitoring

Wongchoosuk, Chatchawal; Khunarak, Chayanin; Lutz, Mario; Kerdcharoen, Teerakiat

doi:10.1109/ecticon.2012.6254166

Cited by 11 publications

(5 citation statements)

References 11 publications

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“…Similar e-nose prototypes exploring MOS sensors can be found in the literature [1], [16], [23]- [25]; sensor arrays range from four to ten, depending on the application. Prototypes rely on MOS technology because it offers small-size and robust sensors, quite good sensitivity, simple signal processing, commercial availability, and low cost.…”

Section: Introductionmentioning

confidence: 89%

“…Nowadays, e-noses in environmental monitoring have found application in four fields: i) air quality, ii) water quality, iii) process control, and iv) odor control systems [15]. Some representative work include Wongchoosuk's WiFi e-nose sensing and quantifying indoor air contaminants even in very low concentrations [16]. The e-nose prototype proposed by Mishra devoted to identify poison gases emanated from waste [17].…”

Section: Introductionmentioning

confidence: 99%

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Reliable e-nose for air toxicity monitoring by filter diagonalization method

Macias-Quijas

Velazquez

Fazio

et al. 2022

IJECE

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This paper introduces a compact, affordable electronic nose (e-nose) device devoted to detect the presence of toxic compounds that could affect human health, such as carbon monoxide, combustible gas, hydrogen, methane, and smoke, among others. Such artificial olfaction device consists of an array of six metal oxide semiconductor (MOS) sensors and a computer-based information system for signal acquisition, processing, and visualization. This study further proposes the use of the filter diagonalization method (FDM) to extract the spectral contents of the signals obtained from the sensors. Preliminary results show that the prototype is functional and that the FDM approach is suitable for a later classification stage. Example deployment scenarios of the proposed e-nose include indoor facilities (buildings and warehouses), compromised air quality places (mines and sanitary landfills), public transportation, mobile robots, and wireless sensor networks.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Reliable e-nose for air toxicity monitoring by filter diagonalization method

Macias-Quijas

Velazquez

Fazio

et al. 2022

IJECE

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“…Using their multi-gas Enose system along with LDA and PLS regression analytical tools, they were able to successfully determine the air quality (in the presence of relative humidity) in an indoor laboratory environment by differentiating between vapours from seven building materials such as sealants (acrylic and silicon), wood glaze, floor adhesive, wall paint, and Oriented Strand Board (OSB). A WiFi Enose composed of eight commercially procured SMO-based gas sensors for real-time indoor air quality assessment was also created by Wongchoosuk et al [106]. They were able to detect low concentrations of CO along with other VOCs in two separate environments (office and kitchen) with their existing Enose and PCA analysis.…”

Section: Air Quality Monitoringmentioning

confidence: 99%

An Outlook of Recent Advances in Chemiresistive Sensor-Based Electronic Nose Systems for Food Quality and Environmental Monitoring

John

Murugappan

Nisbet

et al. 2021

Sensors

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An electronic nose (Enose) relies on the use of an array of partially selective chemical gas sensors for identification of various chemical compounds, including volatile organic compounds in gas mixtures. They have been proposed as a portable low-cost technology to analyse complex odours in the food industry and for environmental monitoring. Recent advances in nanofabrication, sensor and microcircuitry design, neural networks, and system integration have considerably improved the efficacy of Enose devices. Here, we highlight different types of semiconducting metal oxides as well as their sensing mechanism and integration into Enose systems, including different pattern recognition techniques employed for data analysis. We offer a critical perspective of state-of-the-art commercial and custom-made Enoses, identifying current challenges for the broader uptake and use of Enose systems in a variety of applications.

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“…Moreover, powering the electronic nose from an interior source enables to place the device anywhere in the building and measure the air quality. A good example of a device employing the Wi-Fi module is an electronic nose equipped with eight MOS sensors (Wongchoosuk, Khunarak, Lutz, & Kerdcharoen, 2012). This device was placed in two different indoor environments, namely in an office and in a kitchen, and then measurements were taken for seven hours in each of these places.…”

Section: Future Research Directions Wireless E-nose Networkmentioning

confidence: 99%

Electronic Noses for Indoor Air Quality Assessment

Majchrzak

Wojnowski

Dymerski

et al. 2018

Electronic Nose Technologies and Advances in Machine Olfaction

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This chapter presents a proposal of the use of electronic noses in the monitoring of indoor air quality. The main focus is put on the detailed characteristics of today's indoor air quality control methods, the types of pollution in the air, and the development of electronic noses for air testing. Currently, scientists seek methodological and structural solutions that would enable real-time online indoor air control. It has been shown that using electronic noses in this situation is advantageous. In addition, potential uses of these devices are discussed, with particular focus on closed food processing spaces. The authors of the chapter argue that in the near future, the proposed solution could improve the quality of indoor air and thus the health of the users of the indoor environments, as well as the quality of the products prepared there.

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WiFi electronic nose for indoor air monitoring

Cited by 11 publications

References 11 publications

Reliable e-nose for air toxicity monitoring by filter diagonalization method

Reliable e-nose for air toxicity monitoring by filter diagonalization method

An Outlook of Recent Advances in Chemiresistive Sensor-Based Electronic Nose Systems for Food Quality and Environmental Monitoring

Electronic Noses for Indoor Air Quality Assessment

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