Enabling battery-less wearable sensors via intra-body power transfer

Shukla, Rishi; Kiran, Neev; Wang, Rui; Gummeson, Jeremy; Lee, Sunghoon Ivan

doi:10.1145/3356250.3361959

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…In-N-out achieved a 0.37 mW average charging power and power gains when the implant device is static and in motion. Similarly, authors in SkinnyPower (Shukla et al, 2019) designed intra-body means of transferring power to on-body and battery-free sensing devices from battery-enabled ones. For a robust return path, a capacitive coupling model was used.…”

Section: Power Management In Bbwsmentioning

confidence: 99%

Backscatter communication-based wireless sensing (BBWS): Performance enhancement and future applications

Toro

ElHalawany²,

Wong³

et al. 2022

Journal of Network and Computer Applications

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Section: Power Management In Bbwsmentioning

confidence: 99%

Backscatter communication-based wireless sensing (BBWS): Performance enhancement and future applications

Toro

ElHalawany²,

Wong³

et al. 2022

Journal of Network and Computer Applications

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“…active, communication techniques also become actively researched. These include simple sense and transmit sensor powered by ambient temperature differences [156], UFoP [42] and Capybara [23]-energy-harvesting storage-adaptive sensors, Battery Free Phone [126], SkinnyPower-wearable sensor powered by intra-body power transfer [121], Camaropteraimage-inferring sensor [96], SoZu-battery-free activity detector [155], or Botoks-time-aware wireless sensor [28]. Non-wireless/non-communicating battery-free sensors include CapHarvester-local energy monitor powered by harvesting stray voltage from AC power lines- [40], self-powered step motion counter [60], Saturn-battery-free microphone [6], and active radio battery-less eye tracker [73].…”

Section: Related Workmentioning

confidence: 99%

Battery-Free Game Boy

Winkel

Kortbeek

Hester

et al. 2020

Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.

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We present ENGAGE, the first battery-free, personal mobile gaming device powered by energy harvested from the gamer actions and sunlight. Our design implements a power failure resilient Nintendo Game Boy emulator that can run off-the-shelf classic Game Boy games like Tetris or Super Mario Land. This emulator is capable of intermittent operation by tracking memory usage, avoiding the need for always checkpointing all volatile memory, and decouples the game loop from user interface mechanics allowing for restoration after power failure. We build custom hardware that harvests energy from gamer button presses and sunlight, and leverages a mixed volatility memory architecture for efficient intermittent emulation of game binaries. Beyond a fun toy, our design represents the first battery-free system design for continuous user attention despite frequent power failures caused by intermittent energy harvesting. We tackle key challenges in intermittent computing for interaction including seamless displays and dynamic incentive-based gameplay for energy harvesting. This work provides a reference implementation and framework for a future of battery-free mobile gaming in a more sustainable Internet of Things. CCS Concepts: • Human-centered computing → Handheld game consoles; • Hardware → Renewable energy; • Computer systems organization → Embedded systems;

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“…Over the past decades, the fast-growing pace of semiconductor and microelectromechanical system technologies is driving the interest in wearable or implantable bioelectronic devices, of which the power consumption has been reduced to the megawatt or even microwatt level. , Nonetheless, batteries are still used as the primary energy source for their operation. , Many inherent disadvantages of batteries, such as their limited lifetime and form factors, and the environmental impact of their waste are key barriers to the further development of bioelectronic devices. – Thus, there is an urgent need to develop a sustainable power source for these devices. Piezoelectric ceramics have the ability to convert mechanical energy into electric energy .…”

Section: Introductionmentioning

confidence: 99%

Significantly Enhanced Poling Efficiency of Piezocomposites by Tuning Resistivity of a Polymer Matrix

Gao,

Zheng,

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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Although the ability to convert biomechanical vibrations into electric energy has been demonstrated in organic−inorganic piezocomposites, it is challenging to improve their piezoelectric properties owing to insufficient electric field poling. Here, we propose a facile and effective approach to enhance the poling efficiency of a barium calcium zirconate titanate/polydimethylsiloxane (BCZT/PDMS) composite by introducing copper nanowires (Cu NWs) to tune the resistivity of the PDMS matrix. The Cu NW-modified PDMS weakens the resistivity mismatch between the BCZT filler and the PDMS matrix, allowing a higher poling electric field to be applied to the BCZT filler during poling. As a result, the BCZT/Cu-PDMS piezocomposite exhibited a high piezoelectric quality factor (d 33 × g 33 ) of 2.58 pm 2 /N, which was about 7 times higher than that of BCZT/PDMS (d 33 × g 33 = 0.38 pm 2 /N). Moreover, BCZT/Cu-PDMS showed a much higher power density (3.18 μW/cm 2 ) and a faster charging capability. This composite approach of introducing metal nanowires can be considered as a generic poling-improvement method that can be extended to other organic−inorganic piezocomposite systems.

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Enabling battery-less wearable sensors via intra-body power transfer

Cited by 9 publications

References 6 publications

Backscatter communication-based wireless sensing (BBWS): Performance enhancement and future applications

Backscatter communication-based wireless sensing (BBWS): Performance enhancement and future applications

Battery-Free Game Boy

Significantly Enhanced Poling Efficiency of Piezocomposites by Tuning Resistivity of a Polymer Matrix

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