A FPGA-Based Smell Sensing System for Micromachined Gas Sensor Application

Halim, Zaini Abdul; Sidek, Othman

doi:10.1109/iemt.2006.4456476

Cited by 1 publication

(4 citation statements)

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“…Micrograph of micro hotplate is shown in figure 4. Figure 4: Micrograph of micro hotplate before bulk micro machine process [3].…”

Section: Electronic Nosementioning

confidence: 99%

“…Micro hotplate can be developed using CMOS technology and cavity under the micro hotplate can be developed using bulk micro machine process. Response time of micro hotplate sensor base is between 10 seconds to 120 seconds and the size of one sensor is around 200µm [3]. Micrograph of micro hotplate is shown in figure 4.…”

Section: Electronic Nosementioning

confidence: 99%

“…Micro hotplate is a micro machined device consisting of a built in heater, thermometer and electrodes to probe the resistance of a film deposited over them [3] [5] [6]. Heater is used to heat up the metal oxide until 350°C.…”

Section: Electronic Nosementioning

confidence: 99%

“…[1] A water system naturally consists of sulfate based components. When sulfate is added to a closed water system, the sodium sulphite is oxidized to sodium sulphate as indicated in the following reaction: 2Na +1 + SO 3 -1 + 0.5O 2 -2 = 2Na +1 + SO 4 -2…”

Section: Introductionmentioning

confidence: 99%

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Electronic nose to detect sulphate reducing bacteria which is an agent of corrosion

Chandaran

Halim

Sidek

et al. 2010

International Conference on Computer and Communication Engineering (ICCCE'10)

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Sulfate reducing bacteria (SRB) is a nonpathogenicand anaerobic bacterium which can produce enzyme to accelerate the reduction of sulfate compounds to hydrogen sulphate that corrodes metal. This paper will study the possibility of using electronic nose which consists of chemical sensing system, data acquisition system and pattern recognition system such as artificial neural network to detect hydrogen sulphide. There are a few methods of detecting SRB such as laboratory analysis and field test kit but the procedures are costly and take longer time, within 1 to 2 days. Study shows that electronic nose can be used to detect SRB by detecting hydrogen sulphide that is produced during reduction process. The electronic nose can detect hydrogen sulphide within 16 hours where the detection period is reduced from 30% to 65%. Study also shows that the electronic nose with micro hotplate sensor base will reduce 86% of power consumption compared to electronic nose with alumina ceramic sensor base.

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“…Micrograph of micro hotplate is shown in figure 4. Figure 4: Micrograph of micro hotplate before bulk micro machine process [3].…”

Section: Electronic Nosementioning

confidence: 99%

Section: Electronic Nosementioning

confidence: 99%