Improving the Sensitivity of Chipless RFID Sensors: The Case of a Low-Humidity Sensor

Marchi, Giada; Mulloni, Viviana; Ali, O. Hammad; Lorenzelli, Leandro; Donelli, Massimo

doi:10.3390/electronics10222861

Cited by 17 publications

(9 citation statements)

References 21 publications

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“…As a non-contact radio frequency identification technology, radio frequency identification (RFID) technology is used to read and write RFID tags attached to products through a reader [ 28 ], and it is being utilized in more and more food products. However, due to the cost and security of RFID tags, it still faces challenges before large-scale commercial use in the future [ 29 ]. The trusted identification in this paper is to generate the unique identification code of the product through the industrial Internet identification technology, and store the identification code into the two-dimensional code through the two-dimensional code technology, so that the information circulation of the product is more secure and reliable.…”

Section: Methodsmentioning

confidence: 99%

Information Traceability Model for the Grain and Oil Food Supply Chain Based on Trusted Identification and Trusted Blockchain

Zhang

Peng

et al. 2022

IJERPH

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The grain and oil food supply chain has a complex structure, long turnover cycles, and many stakeholders, so it is challenging to maintain the security of this supply chain. A reliable traceability system for the whole grain and oil food supply chain will help to improve the quality and safety of these products, thus enhancing people’s living standards. Driven by the trusted blockchain and trusted identity concepts, this paper constructs an information traceability model for the whole grain and oil food supply chain, and it describes how contract implementation and example verification are performed. First, an information traceability model framework of the whole grain and oil food supply chain is established based on the survey and analysis of the grain and oil food supply chain. Second, trusted identification, blockchain master–slave multi-chain storage, and trusted traceability mechanisms are designed. The trusted identification mechanism is used to track the data information of the whole grain and oil food supply chain. The blockchain master–slave multi-chain storage solves the problem of miscellaneous information caused by many links in the whole grain and oil supply chain, while the credible traceability mechanism ensures the credibility of information collection, storage, and transmission. Finally, based on the data flow, the model operation process is analyzed. Using the information traceability model, the grain and oil food trusted traceability system is designed and developed with the Hyperledger Fabric open-source framework, and a case study is conducted to verify the system. The results show that the model and system constructed in this study solve the problems of low data security and poor sharing, which exist widely in the traditional traceability mechanism, and enable the trusted uplink, storage, processing, and traceability of multi-source heterogeneous information in the lifecycle of the whole grain and oil food supply chain. The proposed system improves the granularity and accuracy of grain and oil food traceability, and provides support for the strategic security of grain stock.

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Section: Methodsmentioning

confidence: 99%

Information Traceability Model for the Grain and Oil Food Supply Chain Based on Trusted Identification and Trusted Blockchain

Zhang

Peng

et al. 2022

IJERPH

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“…Here, the sensitive material exploited is Nafion 117, a polymer which is well-known in the context of the proton exchange membrane (PEM) fuel cell thanks to the hydrophilic nature of its ionic groups which attract water molecules [ 25 ]. For the first time, Nafion 117 was demonstrated for chipless humidity sensors in our previous studies [ 9 , 26 , 27 ]. It achieves sensitivity levels comparable to PVA and paper, but with the great advantage of having near real-time response and recovery times [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…For the first time, Nafion 117 was demonstrated for chipless humidity sensors in our previous studies [ 9 , 26 , 27 ]. It achieves sensitivity levels comparable to PVA and paper, but with the great advantage of having near real-time response and recovery times [ 26 ]. In the present study we exploit Nafion 117 as sensitive material, but the focus is particularly on the third DoF mentioned, that is, the substrate, showing how by acting on the choice of the substrate it is possible to propose solutions preferable for different variations of extrinsic properties.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Performance of a Nafion 117 Humidity Chipless RFID Sensor: The Choice of the Substrate

Marchi

Mulloni

Acerbi

et al. 2023

Sensors

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Chipless radio-frequency identification (RFID) sensors are not yet widespread in practical applications because of their limited sensitivity and selectivity when compared to more mature sensing technologies. The search for a suitable material to perform the sensing function has often been focused on the most common materials used in electrochemical sensing approaches, but little work has been done to directly relate the performances of chipless or microwave sensors to the characteristics of the materials used to fabricate them. In this work we are simulating the impact of the substrate material on the performances of a chipless RFID sensor for humidity detection. The dielectric parameters of the substrate material turn out to be very important to maximize the sensor performances, in relation to the operative range of the sensor (based on the desired application) and to the effective dielectric properties of the sensitive material used, we verify the simulated results with measurements of real chipless humidity cells with Nafion 117 sensitive material. We show which types of substrate are preferable for low-humidity detection and which substrates’ features are instead fundamental to operate in a wider humidity range.

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“…However, there exists another category of RFID tags that do not include an IC (i.e., chipless tags) and where the signal backscattered to the reader consists on a ‘signature’ defined by the antenna (i.e., simple reflecting element) properties such as geometry and materials. Due to the absence of any active electronics in chipless RFID tags, these structures have a great potential to be employed for sensing applications without the risk of damaging the IC, for example, in an environment with a high temperature level [ 1 , 2 , 3 , 4 ]. However, despite their advantages, the main drawback of chipless tags is the absence of a dedicated standard and above all a strong limitation of use in terms of read range due to the impact of the environment: each object being also a reflective object [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

UHF RFID Temperature Sensor Tag Integrated into a Textile Yarn

Benouakta

Huţu

Duroc

2022

Sensors

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This paper presents the design of an ultra high-frequency (UHF) radio frequency identification (RFID) sensor tag integrated into a textile yarn and manufactured using the E-Thread® technology. The temperature detection concept is based on the modification of the impedance matching between RFID tag’s antenna and the chip. This modification is created by the change in the resistance of a thermistor integrated within the tag system due to a temperature variation. Moreover, in order to obtain an environment independent detection, a differential approach is proposed that avoids the use of a pre-calibration phase by the use of a reference tag. Experimental characterization demonstrates the RFID sensor’s potential of detecting a temperature variation or a temperature threshold between 25 and 70 °C through the variation of the transmitted differential activation power.

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Improving the Sensitivity of Chipless RFID Sensors: The Case of a Low-Humidity Sensor

Cited by 17 publications

References 21 publications

Information Traceability Model for the Grain and Oil Food Supply Chain Based on Trusted Identification and Trusted Blockchain

Information Traceability Model for the Grain and Oil Food Supply Chain Based on Trusted Identification and Trusted Blockchain

Tailoring the Performance of a Nafion 117 Humidity Chipless RFID Sensor: The Choice of the Substrate

UHF RFID Temperature Sensor Tag Integrated into a Textile Yarn

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