Embroidered Textile Coils for Wireless Charging of Smart Garments

Chang, C. Y.; Riehl, Patrick; Lin, Jenshan

doi:10.1109/wptc51349.2021.9458167

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…However, if each component is fabricated in a versatile and modular form, a simple do-it-yourself solution may be possible by combining prefabricated modules with textile interconnects. Chang et al present work on a wireless charging device with a similar structure that may be implemented in this fashion . Our solution offers a highly customizable path to the fabrication of a simple, robust, and modular sensor that meets and potentially exceeds the needs of a wider scope of users.…”

Section: Design and Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Flexible Iron-On Sensor Embedded in Smart Sock for Gait Event Detection

Fastier-Wooller,

Lyons,

et al. 2023

ACS Appl. Mater. Interfaces

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Portable and wearable electronics for biomechanical data collection have become a growing part of everyday life. As smart technology improves and integrates into our lives, some devices remain ineffective, expensive, or difficult to access. We propose a washable iron-on textile pressure sensor for biometric data acquisition. Biometric data, such as human gait, are a powerful tool for the monitoring and diagnosis of ambulance and physical activity. To demonstrate this, our washable iron-on device is embedded into a sock and compared to gold standard force plate data. Biomechanical testing showed that our embedded sensor displayed a high aptitude for gait event detection, successfully identifying over 96% of heel strike and toe-off gait events. Our device demonstrates excellent attributes for further investigations into low-cost, washable, and highly versatile iron-on textiles for specialized biometric analysis.

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Section: Design and Mechanismmentioning

confidence: 99%

“…Chang et al present work on a wireless charging device with a similar structure that may be implemented in this fashion. 33 Our solution offers a highly customizable path to the fabrication of a simple, robust, and modular sensor that meets and potentially exceeds the needs of a wider scope of users.…”

Section: ■ Design and Mechanismmentioning

confidence: 99%

Flexible Iron-On Sensor Embedded in Smart Sock for Gait Event Detection

Fastier-Wooller,

Lyons,

et al. 2023

ACS Appl. Mater. Interfaces

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“…As flexible "e-textile" wearables continue to generate interest for a range of different applications [1], enabling batteryfree wearable devices through wireless power transfer (WPT) has been the focus of many research efforts [2]- [5]. Batteryless wearables have the advantages of a long lifetime and reduce the electronic waste generated upon their disposal.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the potential for operating at a few meters from a standard FCC-compliant source such as a Powercast transmitter or an RFID reader has been demonstrated [8]. On the other end, near-field wearable WPT has been demonstrated using a range of flexible, textile-based and printed coils for wearable near-field WPT [2], [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

1 μW-3.75 W Dual-Mode Near/Far-Field Wearable Wireless Power Transfer using a Hybrid Rectenna

Wagih¹,

Komolafe²,

Weddell³

et al. 2022

2022 Wireless Power Week (WPW)

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While far-field wireless power transfer (WPT) promises a long range of operation, it falls short on the DC power which can be provided. On the other hand, resonant near-field WPT suffers from a short wireless range. In this work, a dualmode high/low-power near/far-field rectenna is demonstrated for the first time based on a flexible rectifier and a textile antenna. Based on a high-efficiency single-series rectifier, the far-field rectenna achieves a peak efficiency of 42.7% from an ultralow power density of 0.43 µW/cm 2 , with a 1 V DC output from 4 µW/cm 2 . A high-power 6.78 MHz bridge rectifier is designed and implemented on a flexible textile-based substrate with a 10 dB return loss for inputs above 15 dBm. As a near-field receiver, the antenna could receive 3.75 W DC power at 5 cm from the transmitting coil, with an end-to-end efficiency of 30% inclusive of rectifier, coils, and power amplifier losses. Based on the proposed dual-mode antenna, textile-based wearables could be wirelessly powered dynamically using resonant near-field and radiative near-field WPT.

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“…There have been several types of research that worked on the WPT system utilizing textile [ 19 – 29 ]. Heo et al [ 19 ], Jiang et al [ 20 ], Xu et al [ 21 ], Escobedo et al [ 22 ], Chang et al [ 23 , 26 ], Grabham et al [ 24 ] and Sun et al [ 25 ] analyzed detailed characteristics of textile and verified the feasibility of textile usage on the WPT system. However, they utilized textile as a driving coil so that rigid electronic elements of subsequent circuits have to be attached to the textile, which can possibly be damaged by dynamic movement or laundry process.…”

Section: Introductionmentioning

confidence: 99%

Full-duplex enabled wireless power transfer system via textile for miniaturized IMD

Lee

Bae²,

Kim³

et al. 2022

Biomed. Eng. Lett.

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Full-duplex (FD) enabled wireless power transfer (WPT) system via textile for miniaturized IMD is presented. By utilizing the battery-free near-field communication (NFC) method, the system realizes wireless power and data transmission without a bulky battery or energy harvester which can diminish the physical size of implantable medical device (IMD). Moreover, using textile as a medium of power transmission, the system overcomes the drawback and extends the limited effective range of the NFC method. In addition, as realizing simultaneous bidirectional data transmission over a single data channel, IMD has been further miniaturized. The proposed system including an external transmitter and the minimized IMD receiver supports 200 kbps and 50 kbps data rates for FSK downlink and LSK uplink telemetries at the same time with bit error rate (BER) of < and < , respectively. The measured power transfer efficiency (PTE) and DC-to-DC power delivered to load (PDL) are 5.77% and 64 mW at 0.5/60 cm of vertical/horizontal distance.

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Embroidered Textile Coils for Wireless Charging of Smart Garments

Cited by 5 publications

References 10 publications

Flexible Iron-On Sensor Embedded in Smart Sock for Gait Event Detection

Flexible Iron-On Sensor Embedded in Smart Sock for Gait Event Detection

1 μW-3.75 W Dual-Mode Near/Far-Field Wearable Wireless Power Transfer using a Hybrid Rectenna

Full-duplex enabled wireless power transfer system via textile for miniaturized IMD

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