A passive UHF RFID pH sensor (smart polymers for wireless medical sensing devices)

Hillier, Aaron J. R.; Makarovaite, Viktorija; Holder, Simon J.; Gourlay, Campbell; Batchelor, John C.

doi:10.1049/cp.2017.0260

Cited by 10 publications

(2 citation statements)

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“…PDMS (Polydimethylsiloxane) has been outlined as a viable sensing polymer by Harsányi [204]. A cross-linked variant of PDMS was used in Reference [207] by Hillier et al for UHF RFID sensing of pH. Other sensing applications also exist for PDMS, including pressure sensing up to 1 MPa, as seen in the work of Lei et al [208].…”

Section: Overview Of Previously Used Rfid Sensor Materialsmentioning

confidence: 99%

A Review of Chipless Remote Sensing Solutions Based on RFID Technology

Gee

Anandarajah

Collins

2019

Sensors

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Chipless Radio Frequency Identification (RFID) has been used in a variety of remote sensing applications and is currently a hot research topic. To date, there have been a large number of chipless RFID tags developed in both academia and in industry that boast a large variation in design characteristics. This review paper sets out to discuss the various design aspects needed in a chipless RFID sensor. Such aspects include: (1) Addressing strategies to allow for unique identification of the tag, (2) Sensing mechanisms used to allow for impedance-based response signal modulation and (3) Sensing materials to introduce the desired impedance change when under the influence of the target stimulus. From the tabular comparison of the various sensing and addressing techniques, it is concluded that although many sensors provide adequate performance characteristics, more work is needed to ensure that this technology is capable/robust enough to operate in many of the applications it has been earmarked for.

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Section: Overview Of Previously Used Rfid Sensor Materialsmentioning

confidence: 99%

A Review of Chipless Remote Sensing Solutions Based on RFID Technology

Gee

Anandarajah

Collins

2019

Sensors

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“…A chipless RFID sensor tag is a potential solution to this challenge. Reports were made on wireless pH sensors based on integrated chip [5], electrode system [6], inductive coupling [7], and color-change RFID tag [8]. However, these designs are not appropriate for a wearable platform or wound monitoring.…”

Section: Introductionmentioning

confidence: 99%

Bandage compatible chipless RFID pH sensor for chronic wound monitoring using chitosan in the ISM frequency band

Hasan,

Perez-Pinon,

Pala

2023

Smart Biomedical and Physiological Sensor Technology XX

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We propose a chipless RFID pH sensor which can be easily integrated into a bandage for wound monitoring. The sensor can detect the pH level from 4 to 7 of the wounded area through frequency shift owing to the pH sensitive dielectric parameter of chitosan hydrogel, embedded into the substrate of the sensor. The substrate is composed of fabric material which makes it a strong candidate for non-invasive wound monitoring application. The frequency shift can be wirelessly detected by RFID reader to get the status of the wounded area.

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