A low-cost capacitive relative humidity sensor for food moisture monitoring application

Bo Wang; Man Kay Law; Amine Bermak

doi:10.1109/ACQED.2012.6320483

A low-cost capacitive relative humidity sensor for food moisture monitoring application

Bo Wang^*, Man Kay Law, Amine Bermak

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

7 Citations (Scopus)

Abstract

In this paper, a low-cost capacitive relative humidity hygrometer suitable for food moisture monitoring is presented. The variation of dielectric constant of polyimide film to relative humidity enables the sensor's functionality. A fully differential capacitance to digital converter is utilized as the hygrometer digital readout, which is immune to circuit wiring parasitic and enable the sensor's long-term stability. The humidity sensor is implemented using TSMC1P6M 0.18μm technology with thick top metal option. Simulation results indicate that an inaccuracy of +6/-5%RH can be achieved sensing from 10%RH ∼ 90%RH, with 5.4μW power consumption for sensing and 21.6mW power consumption for sensor heating.

Original language	English
Title of host publication	Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012
Pages	95-99
Number of pages	5
DOIs	https://doi.org/10.1109/ACQED.2012.6320483
Publication status	Published - 2012
Externally published	Yes
Event	4th Asia Symposium on Quality Electronic Design, ASQED 2012 - Penang, Malaysia Duration: 10 Jul 2012 → 11 Jul 2012

Publication series

Name	Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012

Conference

Conference	4th Asia Symposium on Quality Electronic Design, ASQED 2012
Country/Territory	Malaysia
City	Penang
Period	10/07/12 → 11/07/12

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10.1109/ACQED.2012.6320483

Cite this

@inproceedings{7a8c588ccbf2425795b6a7e0a5d04b01,

title = "A low-cost capacitive relative humidity sensor for food moisture monitoring application",

abstract = "In this paper, a low-cost capacitive relative humidity hygrometer suitable for food moisture monitoring is presented. The variation of dielectric constant of polyimide film to relative humidity enables the sensor's functionality. A fully differential capacitance to digital converter is utilized as the hygrometer digital readout, which is immune to circuit wiring parasitic and enable the sensor's long-term stability. The humidity sensor is implemented using TSMC1P6M 0.18μm technology with thick top metal option. Simulation results indicate that an inaccuracy of +6/-5%RH can be achieved sensing from 10%RH ∼ 90%RH, with 5.4μW power consumption for sensing and 21.6mW power consumption for sensor heating.",

author = "Bo Wang and Law, {Man Kay} and Amine Bermak",

year = "2012",

doi = "10.1109/ACQED.2012.6320483",

language = "English",

isbn = "9781467326889",

series = "Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012",

pages = "95--99",

booktitle = "Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012",

note = "4th Asia Symposium on Quality Electronic Design, ASQED 2012 ; Conference date: 10-07-2012 Through 11-07-2012",

}

Wang, B, Law, MK & Bermak, A 2012, A low-cost capacitive relative humidity sensor for food moisture monitoring application. in Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012., 6320483, Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012, pp. 95-99, 4th Asia Symposium on Quality Electronic Design, ASQED 2012, Penang, Malaysia, 10/07/12. https://doi.org/10.1109/ACQED.2012.6320483

A low-cost capacitive relative humidity sensor for food moisture monitoring application. / Wang, Bo; Law, Man Kay; Bermak, Amine.
Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012. 2012. p. 95-99 6320483 (Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A low-cost capacitive relative humidity sensor for food moisture monitoring application

AU - Wang, Bo

AU - Law, Man Kay

AU - Bermak, Amine

PY - 2012

Y1 - 2012

N2 - In this paper, a low-cost capacitive relative humidity hygrometer suitable for food moisture monitoring is presented. The variation of dielectric constant of polyimide film to relative humidity enables the sensor's functionality. A fully differential capacitance to digital converter is utilized as the hygrometer digital readout, which is immune to circuit wiring parasitic and enable the sensor's long-term stability. The humidity sensor is implemented using TSMC1P6M 0.18μm technology with thick top metal option. Simulation results indicate that an inaccuracy of +6/-5%RH can be achieved sensing from 10%RH ∼ 90%RH, with 5.4μW power consumption for sensing and 21.6mW power consumption for sensor heating.

AB - In this paper, a low-cost capacitive relative humidity hygrometer suitable for food moisture monitoring is presented. The variation of dielectric constant of polyimide film to relative humidity enables the sensor's functionality. A fully differential capacitance to digital converter is utilized as the hygrometer digital readout, which is immune to circuit wiring parasitic and enable the sensor's long-term stability. The humidity sensor is implemented using TSMC1P6M 0.18μm technology with thick top metal option. Simulation results indicate that an inaccuracy of +6/-5%RH can be achieved sensing from 10%RH ∼ 90%RH, with 5.4μW power consumption for sensing and 21.6mW power consumption for sensor heating.

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DO - 10.1109/ACQED.2012.6320483

M3 - Conference contribution

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SN - 9781467326889

T3 - Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012

SP - 95

EP - 99

BT - Proceedings of the 4th Asia Symposium on Quality Electronic Design, ASQED 2012

T2 - 4th Asia Symposium on Quality Electronic Design, ASQED 2012

Y2 - 10 July 2012 through 11 July 2012

ER -

A low-cost capacitive relative humidity sensor for food moisture monitoring application

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