Battery-Less Sensing of Body Movements Through Differential Backscattered RFID Signals

Wang, Tingzhe; Dai, Siqi; Liu, Yulong; Ye, Terry Tao

doi:10.1109/jsen.2022.3161406

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…In [ 113 ], a dual-band circular microstrip antenna was explored for strain omnidirectional detection, which achieved strain amplitude and direction detection within a single antenna sensor compared with the antenna array in [ 18 ]. T. Wang [ 114 ] proposed a dual-tag sensor to eliminate the common mode interference through differential backscattering signals [ 114 ]. Multi-sensory systems were also investigated in [ 76 ] for temperature and acceleration measurement.…”

Section: Technical Challenges and Solutionsmentioning

confidence: 99%

A Review of Radio Frequency Identification Sensing Systems for Structural Health Monitoring

et al. 2022

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Structural health monitoring (SHM) plays a critical role in ensuring the safety of large-scale structures during their operational lifespan, such as pipelines, railways and buildings. In the last few years, radio frequency identification (RFID) combined with sensors has attracted increasing interest in SHM for the advantages of being low cost, passive and maintenance-free. Numerous scientific papers have demonstrated the great potential of RFID sensing technology in SHM, e.g., RFID vibration and crack sensing systems. Although considerable progress has been made in RFID-based SHM, there are still numerous scientific challenges to be addressed, for example, multi-parameters detection and the low sampling rate of RFID sensing systems. This paper aims to promote the application of SHM based on RFID from laboratory testing or modelling to large-scale realistic structures. First, based on the analysis of the fundamentals of the RFID sensing system, various topologies that transform RFID into passive wireless sensors are analyzed with their working mechanism and novel applications in SHM. Then, the technical challenges and solutions are summarized based on the in-depth analysis. Lastly, future directions about printable flexible sensor tags and structural health prognostics are suggested. The detailed discussion will be instructive to promote the application of RFID in SHM.

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Section: Technical Challenges and Solutionsmentioning

confidence: 99%

A Review of Radio Frequency Identification Sensing Systems for Structural Health Monitoring

et al. 2022

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“…Differential and multi-port RFID systems were proposed as a solution to robust RFID sensing [16]. Compared to multiple co-located tags, each having an individual antenna [17], realizing a multi-port single-antenna RFID tag with several RFID integrated circuits (ICs) improves the integration as well as results in a similar far-field response. Differential RFID sensing platforms have also been developed for epidermal devices, tuned for operation in direct contact with the skin, enabling two measurands to be detected simultaneously [18].…”

Section: Introductionmentioning

confidence: 99%

Battery-Free Wireless Light-Sensing Tag Based on a Long-Range Dual-Port Dual-Polarized RFID Platform

Wagih

Weddell

Beeby

2022

Sensors

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Radio frequency identification (RFID) represents an emerging platform for passive RF-powered wireless sensing. Differential Multi-port RFID systems are widely used to enable multiple independent measurands to be gathered, or to overcome channel variations. This paper presents a dual-port/dual-integrated circuit (IC) RFID sensing tag based on a shared aperture dual-polarized microstrip antenna. The tag can be loaded with different sensors where the received signal strength indicator (RSSI) of one IC is modulated using a sensor, and the other acts as a measurand-insensitive reference, for differential sensing. The 868 MHz tag maintains a minimum unloaded read range of 14 m insensitive to deployment on metals or lossy objects, which represents the longest reported range of a multi-port RFID sensing tag. The tag is loaded with a light-dependent resistor (LDR) to demonstrate its functionality as a battery-less wireless RFID light sensor. Following detailed RF characterization of the LDR, it is shown that the impedance, and consequently the RSSI, of the sensing tag are modulated by changing the light intensity, whereas the reference port maintains a mostly unchanged response for a correlated channel. The proposed tag shows the potential for channel variations-tolerant differential RFID sensing platforms based on polarization-diversity antennas.

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Chipless RFID-inspired sensing for smart agriculture: A review

Shen,

Shi,

Cheng

et al. 2023

Sensors and Actuators A: Physical

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Battery-Less Sensing of Body Movements Through Differential Backscattered RFID Signals

Cited by 6 publications

References 24 publications

A Review of Radio Frequency Identification Sensing Systems for Structural Health Monitoring

A Review of Radio Frequency Identification Sensing Systems for Structural Health Monitoring

Battery-Free Wireless Light-Sensing Tag Based on a Long-Range Dual-Port Dual-Polarized RFID Platform

Chipless RFID-inspired sensing for smart agriculture: A review

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