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Updated: May 21, 2025

Method Development for Contactless Resonant Cavity Dielectric Spectroscopic Studies of Cellulosic Paper

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Published on: October 4, 2019

一种高灵敏度喷墨打印的柔性共振器,用于监测肉类中的介电变化.

Jamal Abounasr¹, Mariam El Gharbi¹, Raúl Fernández García¹

¹Department of Electronic Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain.

Sensors (Basel, Switzerland)

|March 17, 2025

概括

一个新的灵活循环天线传感器通过跟踪介电性质变化来准确监测肉质. 这种具有成本效益,可打印的传感器提供实时,非侵入性的食品安全洞察力.

关键词:

在2.4 GHz ISM频段.介电性质分析介电性质分析灵活的环形天线天线用喷墨打印的传感器可以打印.肉类新鲜度监测肉类新鲜度监测微波共振是一种微波共振.进行非侵入性监测.基于允许度的传感器印刷电子产品印刷电子产品实时食品质量评估实时食品质量评估

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Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.

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Last Updated: May 21, 2025

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科学领域:

电气工程电气工程
食品科学食品科学食品科学
材料科学材料科学材料科学

背景情况:

食品质量下降会影响介电性质.
实时,非侵入性监测对于食品安全至关重要.
无线电频率 (RF) 传感器为质量评估提供了潜力.

研究的目的:

开发和验证一个灵活的环形天线传感器,用于实时监测肉质量.
根据肉类储存期间的介电性质变化调查传感器的性能.
为了评估传感器的灵敏度,准确性,精度和可重复性.

主要方法:

使用CST微波工作室2024的灵活循环天线传感器的设计和模拟.
在2.4 GHz工业,科学和医疗 (ISM) 频段内运行.
在6天的储存期内使用5个肉样进行实验验证,测量了共振频率的变化.

主要成果:

传感器检测到频率从2.14 GHz (第0天) 到1.29 GHz (第5天) 的变化.
平均灵敏度为0.173 GHz/天,测量和模拟结果之间的相关性很高 (R2=0.984和R2=0.974).
证明了高精度和可重复性,低标准偏差.

结论:

灵活的环形天线传感器是一种灵敏,准确和具有成本效益的解决方案,用于实时监测肉质量.
传感器的设计是紧的,可打印,可扩展,用于整合到物联网 (IoT) 平台.
这项技术通过早期检测腐败,推进了基于射频的非侵入性食品安全.