Wireless, passive, resonant-circuit sensors for monitoring food quality

Keat Ghee Ong; Libby G. Puckett; Bethel V. Sharma; Melanie Loiselle; Craig A. Grimes; Leonidas G. Bachas

doi:10.1117/12.456918

Wireless, passive, resonant-circuit sensors for monitoring food quality

Keat Ghee Ong, Libby G. Puckett, Bethel V. Sharma, Melanie Loiselle, Craig A. Grimes, Leonidas G. Bachas

Research output: Contribution to journal › Article

17 Scopus citations

Abstract

The inductor-capacitor (LC) sensor, comprised of a thick-film printed LC resonant circuit the resonant frequency of which can be remotely detected with a loop antenna, has been used for the monitoring of temperature, humidity, atmospheric pressure, salt concentration, and complex permittivity, as well as the detection of bacteria in a liquid medium based upon changes in the complex permittivity due to the bacteria growth. Due to its low unit cost and wireless detection, the LC sensor is potentially suitable for commercial scale monitoring of food quality. This paper includes the operational principles and design criteria of the LC sensor, and illustrates the monitoring of bacteria growth in milk, meat, and beer.

Original language	English (US)
Pages (from-to)	150-159
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4575
DOIs	https://doi.org/10.1117/12.456918
State	Published - Jan 1 2001
Externally published	Yes

Keywords

Bacteria growth
Complex permittivity
Food quality
Meat
Milk
Resonant circuit
Sensor
Wireless

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.456918

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Cite this

Ong, K. G., Puckett, L. G., Sharma, B. V., Loiselle, M., Grimes, C. A., & Bachas, L. G. (2001). Wireless, passive, resonant-circuit sensors for monitoring food quality. Proceedings of SPIE - The International Society for Optical Engineering, 4575, 150-159. https://doi.org/10.1117/12.456918

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