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Plant Doctor/MagicRoom: Sensing Using Backscatter Networks

Shriya

Das

Aly Mustafa

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Xiang Meng

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Sam-Fone

Cheung

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Plant Doctor Project Recap

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Setup

RFID reflector

Potentiometer (Analog Input)

MSP430 (MCU)

Switching RF Transistor

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Setup

RFID Illuminator

RFID Reflector

Receiving Antenna

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Results

Carrier Frequency (900MHz)

Backscatter Frequencies

(±100-200kHz)

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Fruitless Endeavors…

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Received input using RTLSDR

100 kHz

100 kHz

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Convert the peaks to frequencies

Frequency Decoded

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Magic Room Project Objective

  • Using passive RFID tags to localize people in a room

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Setting up so many RFID tags ….

96 tags

54 tags

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Plans for Next Week

  • Remove noise
  • Work on real time
  • Add more RFID tags!!
  • Create an RRSI map of the tags to explore potential effects of steel studs

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