Design and test of a 915MHz, RFID-based pressure sensor for Glaucoma

Faul, Andre; Naber, John

doi:10.1109/lascas.2014.6820300

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…The idea of the sensor-tag approach is to associate new tag information capture capabilities while still enjoying the identification functionality and obviously, also the remote power supply and wireless transmission. A wide variety of RFID Sensors have been demonstrated in the literature, among them sensors for temperature [3,4], pressure [5], humidity [6,7], deformation [8], crack width [9], curvature monitoring [10], Open/Close [11], chemical [12], food quality [13], etc. The previous references give some examples of the cited functionalities, but the list is not exhaustive.…”

Section: Introductionmentioning

confidence: 99%

On energy harvesting for augmented tags

Allane

Duroc

Vera

et al. 2016

Comptes Rendus. Physique

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International audienceIn this paper, the harmonic signals generated by UHF RFID chips, usually considered as spurious effects and unused, are exploited. Indeed, the harmonic signals are harvested to feed a supplementary circuitry associated with a passive RFID tag. Two approaches are presented and compared. In the first one, the third-harmonic signal is combined with an external 2.45-GHz Wi-Fi signal. The integration is done in such a way that the composite signal boosts the conversion efficiency of the energy harvester. In the second approach, the third-harmonic signal is used as the only source of a harvester that energizes a commercial temperature sensor associated with the tag. The design procedures of the two “augmented-tag” approaches are presented. The performance of each system is simulated with ADS software, and using Harmonic Balance tool (HB), the results obtained in simulation and measurements are compared also.Dans cet article, les signaux harmoniques générés par les puces RFID UHF, généralement considérés comme des effets parasites et non utilisés, sont exploités. En effet, les signaux harmoniques sont collectés pour alimenter un circuit supplémentaire associé à un tag RFID passif. Deux approches sont présentées et comparées. Dans la première approche, le signal harmonique 3f0 est combiné avec un signal Wi-Fi externe à 2,45 GHz. L'intégration se fait de telle manière que le signal composite augmente le rendement de conversion du circuit de récupération d'énergie. Dans la seconde approche, le signal harmonique 3f0 est utilisé comme seule source d'énergie alimentant un capteur de température commercial associé au tag. Les procédures de conception des deux « tags augmentés » sont présentées. Les performances de chaque système sont simulées avec le logiciel ADS, en utilisant l'outil Harmonique Balance (HB) ; les résultats obtenus au moyen de simulations et de mesures sont aussi comparés

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Section: Introductionmentioning

confidence: 99%

On energy harvesting for augmented tags

Allane

Duroc

Vera

et al. 2016

Comptes Rendus. Physique

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A novel 915 MHz, RFID-based pressure sensor for glaucoma using an electrically small antenna

Faul

Naber

2015

Analog Integr Circ Sig Process

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Toward a Wirelessly Powered On-Lens Intraocular Pressure Monitoring System

Chiou

Hsu

Liao

et al. 2016

IEEE J. Biomed. Health Inform.

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This paper presents a wireless on-lens intraocular pressure monitoring system, comprising a capacitance-to-digital converter and a wirelessly powered radio-frequency identification (RFID)-compatible communication system, for sensor control and data communication. The capacitive sensor was embedded on a soft contact lens of 200 μm thickness using commercially available biocompatible lens material, to improve compliance and reduce user discomfort. The sensor chip was shown to achieve effective number of bits greater than 10 over a capacitance range up to 50 pF while consuming only 64-μW power. The on-lens capacitive sensor could detect dielectric variation caused by changes in water content from a distance of 2 cm by using incident power from an RFID reader at 20 dBm. The maximum detectable distance was 11 cm with 30-dBm incident RF power. The rise in eye tissue temperature under 30-dBm RF exposure over an interval of 1 s was simulated and found to be less than 0.01°C.

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Design and test of a 915MHz, RFID-based pressure sensor for Glaucoma

Cited by 7 publications

References 13 publications

On energy harvesting for augmented tags

On energy harvesting for augmented tags

A novel 915 MHz, RFID-based pressure sensor for glaucoma using an electrically small antenna

Toward a Wirelessly Powered On-Lens Intraocular Pressure Monitoring System

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