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Low-cost dielectric...
Low-cost dielectric sheets for large-area floor sensing applications
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- Tewari, Amit (författare)
- Åbo Akademi University, Finland
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- Huerta, Hugo (författare)
- Turku University of Applied Sciences, Sweden
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- Chinga-Carrasco, Gary (författare)
- RISE,Material- och ytdesign
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- Hindersland, Leif Kåre (författare)
- Alloc AS, Norway
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- Ranta, Samuli (författare)
- Turku University of Applied Sciences, Finland
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- Pettersson, Fredrik (författare)
- Åbo Akademi University, Finland
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- Österbacka, Ronald (författare)
- Åbo Akademi University, Finland
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- Toivakka, Martti (författare)
- Åbo Akademi University, Finland
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(creator_code:org_t)
- 2022-10-20
- 2022
- Engelska.
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Ingår i: Flexible and Printed Electronics. - : Institute of Physics. - 2058-8585. ; 7:4
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sensitivity response is a critical parameter that decides the domain of dielectric materials to be implemented as piezocapacitive sensors for low- or high-pressure sensing applications. Here, we have clarified the sensitivity response behavior of three low-cost dielectric materials, two biodegradable paperboards, and one acoustic polymeric foam. The devices are fabricated in the form of a metal-insulator-metal structure, and the capacitive response of the devices is measured using the charge extraction by linearly increasing voltage technique. The sensitivity response curve (ΔC/C o vs. pressure) reveals that the paperboard materials are sensitive enough to detect low-pressure regimes (45 kPa), whereas the acoustic foam is quite promising for high-pressure monitoring (above 150 kPa). Using a multiplexer circuit, we demonstrated the sensitivity response via 2 by 2 matrix structure both as a steady-state and transient response. Our results show that the passive matrix structure interference between different pixels can be minimized after increasing the spacing between electrodes strip. Finally, a full-scale demonstrator (dimension 120 cm × 400 cm) with a 2 × 8 matrix structure laminated under floor tiling has been demonstrated. We show how such a floor sensor utilizing the low-cost substrates can be used to recognize single-stepping, walking, and falling.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- biodegrable sheets
- capacitance
- dielectric
- piezocapacitive sensor
- sensitivity
- Costs
- Dielectric materials
- Floors
- Metal insulator boundaries
- Timing circuits
- Transient analysis
- Biodegrable sheet
- Dielectric sheets
- High pressure
- Low pressures
- Low-costs
- Low-high
- Matrix structure
- Sensing applications
- Dielectrics
- Foam
- Materials
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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