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

被引：7

作者：

Ong, KG ^{[1
]}

Puckett, LG ^{[1
]}

Sharma, BV ^{[1
]}

Loiselle, M ^{[1
]}

Grimes, CA ^{[1
]}

Bachas, LG ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

来源：

CHEMICAL AND BIOLOGICAL EARLY WARNING MONITORING FOR WATER, FOOD AND GROUND | 2002年 / 4575卷

关键词：

food quality; milk; meat; sensor; resonant circuit; wireless; complex permittivity; bacteria growth;

D O I：

10.1117/12.456918

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 hi 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.

引用

页码：150 / 159

页数：10

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