Changes between Version 17 and Version 18 of Other/Summer/2024/pD


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Timestamp:
Jul 3, 2024, 3:53:20 PM (4 days ago)
Author:
sdas21
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  • Other/Summer/2024/pD

    v17 v18  
    22= Plant Doctor: Harnessing Backscatter Radio Sensors for Agriculture =
    33**WINLAB Summer Internship 2024**\\
    4 **Group Members:** Sam-Fone Cheung & Shriya Das\\
     4**Group Members:** Sam-Fone Cheung, Shriya Das, Aly Mustafa, Xiang Meng\\
    55**Advisor:** Aggelos Bletsas
    66
    … …  
    99Backscatter radio, or reflection radio, offers a low-cost and low-power alternative to conventional radio sensor networks. This is crucial for modern agriculture which requires continual monitoring of environmental conditions such as soil moisture or temperature. Prior research using capacitance sensors to measure soil moisture has shown promising results using backscatter radio, despite the limited range.
    1010
    11 Our group expanded this work to use temperature sensors on a plants which will transmit information using a network of RFID tags. These sensors should be battery-less and low-cost as they will harvest ambient radio frequency (RF) energy.
     11Our group expanded this work to use temperature sensors on a plants which will transmit information using a network of RFID (radio frequency identification) tags. These sensors should be battery-less and low-cost as they will harvest ambient radio frequency (RF) energy.
     12
     13Over the summer, our team split into two groups to build the transmitter and receiver, ultimately converging.
     14
    1215
    1316== Weekly Progress
    1417==== WEEK ONE ====
    1518[https://docs.google.com/presentation/d/176HsRDAxeJxmf1tP5aNRFMfCJ6p95QO6EIxRgzuDiPA/edit?usp=share_link Weekly Presentation]\\
    16 //Progress: //Read prior art about [https://ieeexplore.ieee.org/document/8454387 backscatter radios], RFID (radio frequency identification) tags, and using [https://ieeexplore.ieee.org/document/8454387 capacitance sensors to measure soil moisture].
     19
     20||= Receiver =||= Transmitter =||
     21||Read prior art about [https://ieeexplore.ieee.org/document/8454387 backscatter radio], RFID tags, and [https://ieeexplore.ieee.org/document/8454387 capacitance sensors]. ||Started learning the TI Launchpad microcontroller, read the documentation, and spoke to an expert.||
    1722
    1823
    1924==== WEEK TWO ====
    2025[https://docs.google.com/presentation/d/1bY_nNpxIUeusqLehttZEXWjmkHdcylSNkebI1xsyuZM/edit?usp=sharing Weekly Presentation]\\
    21 //Progress: //Used RTL-SDR's to explore software-defined radios (SDR) and tune into local FM stations. Also familiarized ourselves with [https://www.gnuradio.org GNURadio]. [[Image()]]
     26||= Receiver =||= Transmitter =||
     27||*Used RTL-SDR's to explore software-defined radios (SDR) and tune into local FM stations. \\*Also familiarized ourselves with [https://www.gnuradio.org GNURadio] and its tutorials.||*Learned how to use TI Launchpad MCU MSP-EXP430G2ET. \\*Implemented an adjustable 200kHz-300kHz 50% duty cycle square wave output. Also implemented user input through digital input using the I/O pins. \\*Attempted potentiometer user input, but did not successfully complete it. ||
    2228
    2329
    … …  
    2531[https://docs.google.com/presentation/d/15bAzRQfZHG3FM4fyjsaUbeUBmcJpEHqheeM7rIhx3_g/edit?usp=sharing Weekly Presentation]\\
    2632//Progress: //Continued using GNURadio to implement [https://wiki.gnuradio.org/index.php?title=Simulation_example:_FSK frequency shift keying] and [https://www.mathworks.com/help/signal/ref/periodogram.html periodograms] (maximum likelihood estimators). We also used MATLAB/Octave to compare our results from GNURadio using the SDR.
    27 [[Image(unnamed.png)]]
     33[[Image(unnamed.png, align=center)]]
    2834
    2935==== WEEK FOUR ====
    30 [Weekly Presentation]\\
    31 //Progress: //Explored the accuracy of the reciever while changing the power transmission, frequency, and distance between the SDR and signal generator. Learned about matched filters and how to [https://www.telecom.tuc.gr/~aggelos/files/TCOM2014.pdf implement them into the receiver].
     36[https://docs.google.com/presentation/d/1tVhHWkjkA914yFxDjfUT3V-OctOSd3-dtMAMtxsk6sg/edit?usp=sharing Weekly Presentation]\\
     37//Progress: //Explored the accuracy of the receiver while changing the power transmission, frequency, and distance between the SDR and signal generator. Learned about matched filters and how to [https://www.telecom.tuc.gr/~aggelos/files/TCOM2014.pdf implement them into the receiver]. We also created a block diagram to illustrate how both the transmitter and receiver should work together to send information about a plant's temperature.\\
     38[[Image(unnamed.2.png, 520px, align=center)]]
     39
     40
     41==== WEEK FIVE ====
     42[https://docs.google.com/presentation/d/1IVHxp37dLoeeXByd_AVcU_r4t5fZpaF5VpObRvP3WJ0/edit?usp=share_link Weekly Presentation]\\
     43//Progress: //
     44
     45
     46==== WEEK SIX ====
     47[https://docs.google.com/presentation/d/1IVHxp37dLoeeXByd_AVcU_r4t5fZpaF5VpObRvP3WJ0/edit?usp=share_link Weekly Presentation]\\
     48//Progress: //