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RFID- Arduino Rat Tracking

RFID- Arduino Rat Tracking. Introduction. Objective : Develop method of position-tracking that allows for cost-effect behavioral analysis of subjects undergoing testing-stage treatment. Goal : set-up position tracking system using RFID technology Constraints : cage of 70x70cm

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RFID- Arduino Rat Tracking

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  1. RFID- Arduino Rat Tracking

  2. Introduction • Objective: Develop method of position-tracking that allows for cost-effect behavioral analysis of subjects undergoing testing-stage treatment. • Goal: set-up position tracking system using RFID technology • Constraints: • cage of 70x70cm • accuracy: minimal error ± 2cm • low cost • Possible animal/device orientation • IdealSolution: Inject rat with RFID tag, of which is readable at 35-70cm with an Arduino reader, and track its position through a cost effective and accurate method.

  3. Methods • Triangulation • Complex • Calculations using RSS (Received Signal Strength) • Requires sufficient reading range (70x70cm) • Estimate 8 antennas and 4 readers for full cage coverage • Unsure of accuracy • Case Study done with UHF passive tags achieved read range of 1m • BayesianNetwork • Simple • Calculations use checkpoints/gates • Requires numerous antennas and readers • Accuracy: location can be known within 1cm • Read range is not an issue • Passive tags can be used Note: Method is dependent on environment and cost Tradeoff: Triangulation uses fewer devices but we need a reading-range solution Checkpoints guarantee accuracy but is more costly with more equipment

  4. Tag-Types •LF : 125 kHz - 134,2 kHz •HF : 13.56 MHz •UHF : 860 MHz - 960 MHz •SHF : 2.45 GHz Note: the read ranges vary dramatically. Passive is able to be read up to a few meters, but it depends on the reader – most readers cannot achieve this because of government standards. It also depends on the frequency. UHF has been shown to get up to 300 ft

  5. More on Tags • Implantable tags are commonly LF passive; max range around 35cm; about €1 • Orientation: passive external accelerometer tag available • Passive is most commonly used with Arduino • Other forms of tags: chip, printable adhesives, key fobs, cards • Cards appear to get best read range • Battery Assisted tend to have sensors • The sizes, ranges, prices, and forms of tags and readers vary greatly

  6. Documented Experiments and Studies • RFID Cat door • Tutorial for Arduino • 125 kHz • Passive external tags • Bought Arduino kit with external antenna ($11+) • made custom antenna (10”x10”) • Achieved 4” range Trovan Technology • Used in mouse tracking study • Method: checkpoints • 27 Antennas • 1 reader ? • LF implantable tag • Unknown cost • Not Arduino Alien Technology • Case Study for localization using passive RFID • Method: Triangulation using RSS • External RFID tags • UHF • Read range of 1m • Not using Arduino • Expensive Equipment • 1 reader ($900 with 4 antennas ($194 each)

  7. Prices

  8. Questions to Answer • How much info on tag? How much space is needed? • What exactly is the environment/cage like? • Cost per cage? • Accuracy of position? • Orientation priority? • What is the problem with the current cages?

  9. Possible Testing • Buy 125kHz Arduino kit and modify antenna to see what the max range is for possible use in RSS Triangulation • Make grid of antennas of floor of cage (PCB). Use RSS or checkpoints with the short range. 1 antenna = 1 reader or find way to cycle through each antenna and use fewer readers • Assume max range is 35cm; put two antennas with one reader per wall (8 antennas, 4 readers). 4 virtual sections of cage and use RSS for location

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