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Wildlife Tracker: Detailed Design Review

Wildlife Tracker: Detailed Design Review. MSD I Team P14347. Team P14347 & Introduction. Agenda. Progress Report Project Background System Analysis Mechanical Analysis Electrical Analysis Risk Assessment Test Plan Action Items/MSD II Plan Questions. Current & Desired State.

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Wildlife Tracker: Detailed Design Review

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  1. Wildlife Tracker: Detailed Design Review MSD I Team P14347

  2. Team P14347 & Introduction

  3. Agenda • Progress Report • Project Background • System Analysis • Mechanical Analysis • Electrical Analysis • Risk Assessment • Test Plan • Action Items/MSD II Plan • Questions

  4. Current & Desired State • Injured animals can travel substantial distances, may be difficult to track • Game which has been shot and cannot be found leads to more animal deaths and inefficient hunting • Wildlife Tracker will detach from arrow and remain attached to animal • Handheld device will provide GPS location of animal

  5. Progress Report • Cellphone & Google Maps Integration has been researched & found to be a viable User Module • Circuitry Block Diagrams Established (w/ Pin Connections) • Enclosure Model Completed • Began Purchasing Test Parts • Arrows & Broadheads • Linx Technologies • Initial Arrow Attachment Deviation Experiment ready for trial • Refined Budget • Faculty Review Consultations Completed • Dr. Amuso • Dr. P. Venkataraman Previous Questions: • Burst vs. Continuous Transmission – Burst will utilized for the application (10-15 min. bursts) • FCC Safety Requirements – SAR (Specific Absorption Rate) 1.6 W/kg

  6. Stakeholders • Primary Customer: Dr. Eli Saber • Faculty Guide: Art North • End Users: Bow Hunters • Other: Hunting Stores/Distributors, Game Wardens, Environmental Activists, Linx Technologies • MSD Team 14347

  7. Project Deliverables • Durable re-attachable tracking device that connects onto an arrow • Handheld user device that monitors the location of the GPS attachment • ‘Second Chance’ retrieval feature (In case shot is not fatal) • Intuitive, easy to understand User Manual • Cellphone GPS application

  8. Benchmarking • GameVector Deer Recover System • $399.99 • 45 Grains (2.9 grams) • Battery life of 48-72 hours • Up to two mile range • Tested for bows shooting up to 300 feet per second • Currently sold out

  9. Customer Requirements

  10. Engineering Requirements

  11. Requirement Mapping

  12. Functional Decomposition

  13. Morphological Analysis

  14. Concept Selection

  15. Concept Selection

  16. Concept Selection

  17. Physical Architecture GPS Satellites iPhone GPS Receiver ActiveAntenna(s) Google Maps GPS Receiver Battery Audio Jack RF Transmitter Microcontroller Arrow Clip Tx Antenna RF Receiver RX Antenna Hide Hook Arrow Attachment Handheld Device

  18. Google Maps Integration Handheld Device Application Google Maps Display Phone Location Receive GPS Coordinates Display GPS Coordinate Location Handheld Device Relay GPS Coordinates to Google Maps Store Locations on the Cloud as a “Map” Sends Save Command to Google Maps

  19. Bow Efficiency vs Arrow Weight Example B.W. Kooi - “On the Mechanics of the Bow and Arrow”

  20. Baseline Drag Analysis

  21. Video of Arrow Slow Motion https://www.youtube.com/watch?v=CO102jz8sFM

  22. Front of Center Optimal F.O.C values were found at Goldtip.com and ArcheryReport.com

  23. Arrow Trajectory

  24. Possible Designs

  25. Arrow Flight Test • Test Procedure • 10 shots fired from 20 meters of each design • Velocity measure with radar gun for each shot • Deviation measured from bulls-eye in mm • Calculate mean, median, standard deviation…etc • Iterate Test Procedure for a normal arrow and each attachment design.

  26. Test Data Sheet

  27. Arrow Attachment Device Electronics

  28. GPS Receiver • Linx Technologies RXM-GPS-RM • Includes evaluation kit • Operating Voltage: 3.0-4.3V (Typically 3.3V) • Supply Current: 12-14mA (Peak of 44mA) • NMEA Output Messages • Embedded Ceramic Antenna (not included)

  29. Linx Technologies TRM-915-R250 • No evaluation kit included, plan to substitute using Raspberry Pi • Operating Voltage: 3.3V • Supply Current: • Receive: 25mA • Transmit: 60-200mA • Frequency: 902-928MHz • Can transmit to distances of up to 4km RF Transceiver

  30. Antenna Considerations • Friis Equation can be used to calculate range • Arrow attachment device may need multiple antennas • Interference can be predicted using permittivity of materials • Linx’s recommendation:

  31. Power Consumption

  32. Risk Assessment A

  33. Risk Assessment B

  34. Test Plan

  35. Bill of Materials

  36. Action Items • Select number/type of antennas • Test arrow attachment shapes • Decide on form factor and dimensions • Select battery • Test/experiment with Linx Technology products as they arrive • Complete design • Full BOM & pricing of parts necessary for MSD II • Optimize budget

  37. Project Plan for MSD II • Prototyping • Application development (for Google Maps integration) • Maintain budget • Test for engineering requirements

  38. Questions?

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