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applications Daniel Belo Felisberto Pereira Motivation Present - - PowerPoint PPT Presentation

Mar 12, 2024 238 likes •401 views

Nuno Borges Carvalho Passive Backscatter Sensors for IoT Ricardo Correia applications Daniel Belo Felisberto Pereira Motivation Present IoThings Near future IoThings Page 2 IT- DETI Universidade de Aveiro (nbcarvalho@ua.pt)

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SLIDE 1

Passive Backscatter Sensors for IoT applications

Nuno Borges Carvalho Ricardo Correia Daniel Belo Felisberto Pereira

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SLIDE 2 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Motivation

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Present Io“Things” Near future Io“Things”

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SLIDE 3 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Motivation

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SLIDE 4 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Motivation

Page 4 from QUALCOMM
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SLIDE 5 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Motivation Energy waste in IoT

Page 5 http://edna.iea-4e.org Source: 2016 data

Standby Energy Battery Manufacturing

One battery per IoT device and replaced every 2nd year

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SLIDE 6 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Motivation Energy waste in IoT

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Standby Energy

Batteries take hundreds of years to decompose, posing a serious threat to the public health and to the environment.

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SLIDE 7 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Market Solutions Power Consumption

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Type AAA CR2032 CR123A CR2 Material Alkaline LiMn02* Lithium Lithium Voltage 3V 3V 3V 3V Capacity 500 mAh 225 mAh 1500 mAh 800 mAh

10 20 30 40 50 60 50 100 150 200 250 300 350 Years Transactions per day AAA CR2032 CR123A CR2
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SLIDE 8 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Energy harvesting sources

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Wi-Fi Radio and TV broadcast GSM/Cellular

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SLIDE 9 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

The Solution

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Backscatter communications Wireless Power Transmission Energy Harvesting LoRa – 60 mW to 400 mW Bluetooth – 5 mW to 90 mW WiFi – 50 mW to 1 W

  • Remove the need of power for transmit / receive!
  • Eliminate batteries!

Passive

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SLIDE 10 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt) Page 10

Backscatter communications Wireless Power Transmission Energy Harvesting

SWIPT

Simultaneous Wireless Information and Power Transfer

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SLIDE 11 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Our Solution – SWIPT backscatter

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Low Cost SDR Readers Dummy Wireless Power Transmitters Passive Sensors

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SLIDE 12 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Backscatter Battery-less Paradigm

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SLIDE 13 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

Towards the FUTURE!!

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Passive Sensors Increase Data rate Increase data rate and enable WPT capabilities 2015 2017 2018 2019 2016 Increase frequency and decrease size Total size = 0.92 mm2

kbit/s Gbit/s

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SLIDE 14 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

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Backscatter ambient backscatter

Spyridon N Daskalakis et all, “Spectrally Efficient 4-PAM Ambient FM Backscattering for Wireless Sensing and RFID Applications”, to be presents in the next IMS2018 in Philadelphia
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SLIDE 15 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt)

mmWave low power connectivity – Applications & Investors

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  • Glaucoma
  • Diabetes (track the blood

sugar levels – measure glucose) Extremely small, low power and cheap connectivity solution which can be embedded in every object

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SLIDE 16 IT- DETI – Universidade de Aveiro (nbcarvalho@ua.pt) Page 16

Thank you very much for your attention