Signal and Power Transfer to Actuators Distributed on Conductive Fabric Sheet for Wearable Tactile Display

Tajima, Yuki; Noda, Akihito; Shinoda, Hiroyuki

doi:10.1007/978-981-10-4157-0_28

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Power supply sheets are functional 2-D surfaces that provide power to the RXs placed on them. We categorize these researches into two groups: 1) ad-hoc contact DC power supply sheets [13,37,39,42,44,46] and 2) WPT sheets [17,25,26,30,35,38,45]. Ad-hoc contact DC power supply sheets transmit power to RXs via electrodes which establish conductive contact.…”

Section: Power Supply Sheetsmentioning

confidence: 99%

A Cuttable Wireless Power Transfer Sheet

Takahashi

Sasatani

Okuya

et al. 2018

Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.

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We propose a cuttable wireless power transfer sheet which allows users to modify its size and shape. This intuitive manipulation allows users to easily add wireless power transmission capabilities to everyday objects. The properties of the sheet such as thinness, flexibility, and lightness make our sheet highly compatible with various configurations. We contribute a set of technical principles for the design of circuitry, which integrates H-tree wiring and time division power supply techniques. H-tree wiring allows the sheet to remain functional even when cut from the outside of the sheet, whereas time division power supply avoids the reduction in power transfer efficiency caused by the magnetic interference between adjacent transmitter coils. Through the evaluations, we found that our time division power supply scheme mitigates the degradation of power transfer efficiency and successfully improves the average efficiency. Furthermore, we present four applications which integrates our sheet into daily objects: wireless charging furniture, bag, jacket, and craft; these applications confirmed the feasibility of our prototype.

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Section: Power Supply Sheetsmentioning

confidence: 99%

A Cuttable Wireless Power Transfer Sheet

Takahashi

Sasatani

Okuya

et al. 2018

Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.

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“…Continuous dc power supply and amplitude modulated signal, using a carrier in a frequency range of 2-10 MHz, are simultaneously transferred on the same textile medium. Based on a similar concept, continuous dc power supply combined with multiplexed signal transfer [18], which derives from multiplexed ac power transfer [17], have been presented, based on frequency division multiplexing (FDM). In those works, three-channel on/off control of slave devices was demonstrated by on-off modulation of three carriers.…”

Section: Introductionmentioning

confidence: 99%

Inter-IC for Wearables (I²We): Power and Data Transfer Over Double-Sided Conductive Textile

Noda

Shinoda

2019

IEEE Trans. Biomed. Circuits Syst.

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We propose a power and data transfer network on a conductive fabric material based on an existing serial communication protocol, Inter-Integrated Circuit (I 2 C). We call the proposed network Inter-IC for Wearables (I 2 We). Continuous dc power and I 2 C-formatted data are simultaneously transferred to tiny sensor nodes distributed on a double-sided conductive textile. The textile has two conductive sides isolated from each other and is used as a single planar transmission line. I 2 C data are transferred along with dc power supply based on frequency division multiplexing (FDM). Two carriers are modulated with the clock (SCL) and the data (SDA) signals of I 2 C. A modulation and demodulation circuit is designed to enable using off-the-shelf I 2 C-interfaced sensor ICs. One significant originality of this work is that a special filter to enable passive modulation is designed by locating its impedance poles and zeros at appropriate frequencies.The proposed scheme enables flexible implementation of wearable sensor systems in which multiple off-the-shelf tiny sensors are distributed all over a wear.

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Ramus: A Frequency-Multiplexed Power Bus for Powering, Sensing and Controlling Robots

Nishizawa

Sasatani

Ishige

et al. 2020

IEEE Robot. Autom. Lett.

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Signal and Power Transfer to Actuators Distributed on Conductive Fabric Sheet for Wearable Tactile Display

Cited by 4 publications

References 4 publications

A Cuttable Wireless Power Transfer Sheet

A Cuttable Wireless Power Transfer Sheet

Inter-IC for Wearables (I²We): Power and Data Transfer Over Double-Sided Conductive Textile

Ramus: A Frequency-Multiplexed Power Bus for Powering, Sensing and Controlling Robots

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Signal and Power Transfer to Actuators Distributed on Conductive Fabric Sheet for Wearable Tactile Display

Cited by 4 publications

References 4 publications

A Cuttable Wireless Power Transfer Sheet

A Cuttable Wireless Power Transfer Sheet

Inter-IC for Wearables (I2We): Power and Data Transfer Over Double-Sided Conductive Textile

Ramus: A Frequency-Multiplexed Power Bus for Powering, Sensing and Controlling Robots

Contact Info

Product

Resources

About

Inter-IC for Wearables (I²We): Power and Data Transfer Over Double-Sided Conductive Textile