MSD I Team P14347 Team P14347 Arrow Guys amp Introduction Member Role Eric Peterson Team Leader EE Alex Pelkey ME Joseph Ciccarello EE Frank Meola EE Timothy Nash ID: 744942
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Slide1
Wildlife Tracker: Complete Design Review
MSD ITeam P14347Slide2
Team P14347 “Arrow Guys”
& Introduction
Member RoleEric Peterson
Team
Leader / EE
Alex
Pelkey
ME
Joseph
Ciccarello
EE
Frank Meola
EE
Timothy Nash
ME Slide3
Agenda
Progress ReportProject BackgroundSystem Analysis
Mechanical AnalysisElectrical AnalysisRisk AssessmentTest PlanMSD II PlanQuestionsSlide4
Progress Report
Google Maps API programming has been exploredUser Device Module Block Diagram Established (w/ Pin Connections)
Arrow Attachment Deviation Experiment has been conducted Microcontroller selectedBudget FinalizedBOM refinement is in progress
Received
Linx
Technology products
Previous Questions:
Further FCC regulations, 1W for a transmission of digitally modulated signals in our bandwidth (902-928 MHz)
Using one active antenna on each device, multiple miniature embedded antennas on the arrow attachmentSlide5
Current & Desired State
Injured animals can travel substantial distances, may be difficult to trackGame 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 animalHandheld device will provide GPS location of animalSlide6
Stakeholders
Primary
Customer: Dr. Eli SaberFaculty Guide: Art NorthEnd Users: Bow
Hunters
Other
: Hunting Stores/Distributors, Game Wardens, Environmental
Activists,
Linx
Technologies
MSD
Team 14347Slide7
Project Deliverables
Durable re-attachable
tracking device that connects onto an arrowHandheld 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 applicationSlide8
Benchmarking
GameVector Deer Recover System$
399.9945 Grains (2.9 grams)Battery life of 48-72 hoursUp to two mile
range
Tested for bows shooting up to 300 feet per second
Currently sold
outSlide9
Customer RequirementsSlide10
Engineering RequirementsSlide11
Functional DecompositionSlide12
Morphological Analysis
Solutions
Sub-Functions
1
2
3
4
5
Attach to Arrow
Spring-Dowel Pin
Clip
Adhesive
Magnet
Attach to Wildlife
Barbed Hook
Pronged Tip
Spring-Activated Clamp
Retractable Prongs
Transmit/Receive Signal
Transponder
WiMAX
Cell Phone Signal
Radio Waves
Indicate Location
Audio Speaker
LCD Map
Visual-Blinking LED
Cellphone Integration
Dial Indicator
Protect Functional Integrity
Enclosure
Potting Compound
Airbags?
Activate Transmitter
Accelerometer
On/off switch
Animal Circuit Activation
Slide13
Physical Architecture
RF Receiver
RX Antenna
RF Transmitter
Battery
Arrow Clip
GPS Satellites
Arrow Attachment
Handheld Device
Tx
Antenna
GPS Receiver
Audio Jack
GPS Receiver
Google Maps
Microcontroller
Hide Hook
Active
Antenna(s
)
iPhone
On/Off SwitchSlide14
Bow Efficiency vs Arrow Weight
Example
B.W
.
Kooi
- “On the Mechanics of the Bow and Arrow”Slide15
Front of Center
Optimal F.O.C values were found at
Goldtip.com and ArcheryReport.comSlide16
Arrow TrajectorySlide17
Form FactorsSlide18
Arrow Flight Test
Test ProcedureBow sights calibrated for regular arrow5 shots fired from 20 meters of each design
X and Y Distances measure from bulls-eyeCalculate mean, median, standard deviation…etcSlide19
Test Attachments
400 Grain Carbon Arrows with 125 Grain Field Tips65lb Martin “MAG CAT” Compound BowSlide20
Testing PhotosSlide21
Arrow Flight TestSlide22
Other Testing Notes
The attachments ended up being much heavier than expected Arrow speed was not measured but was visibly slower for all attachments
All attachments except the streamline were very loud when traveling through the airExperimental Video to displaySlide23
Arrow Attachment Device ElectronicsSlide24
User Device ElectronicsSlide25
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)Slide26
GPS ReceiverSlide27
RF Transceiver
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
Relying on newer model being released this summerSlide28
Microcontroller
Made by Microchip TechnologyProgrammable Intelligent ComputerLow Cost
Widely UsedSerial Programming in CMPLABFree IDE provided by MicrochipOperating Current175μ
A
Operating Voltage
2.0V – 5.5VSlide29
Antenna Selection
TX Antenna:
66089 Series by
Anaren
915MHz center frequency
SWR <1.7 typical
Gain: 3dBi
Quarter wave
RX
Antenna:
ANT-916 by
Linx
916MHz
center frequency
SWR <
1.9
typical
Gain:
1.8dBi
Quarter
wave
GPS
Antenna
:
W3011A by Pulse Electronics
Ceramic
Gain:
3-3.3dBi
1.575GHz center frequency
Surface mountSlide30
Conceptual Model of User DeviceSlide31
Power Consumption
Arrow Attachment Electronics
Device
Power Consumption (
mW
)
GPS Receiver
42.9
RF Transmitter
330
Total:
372.9
User Device Electronics
Device
Power Consumption (
mW
)
RF Receiver
25
Microcontroller
1
Total:
30
Slide32
Google Maps Integration
Handheld Device
Receive GPS Coordinates
Display Phone Location
Display GPS Coordinate Location
Store Locations on the Cloud as a “Map”
Google Maps
Handheld Device
Application
Relay GPS Coordinates to Google Maps
Sends Save Command to Google MapsSlide33
Google Maps APISlide34
ID
Risk Item
Effect
Cause
Likelihood
Severity
Importance
Action to Minimize Risk
Owner
1
Effect on flight of the arrow
The attachment could cause an inaccurate shot
The aerodynamics of the arrow become faulty
3
3
9
Ensure the aerodynamics of the arrow are unaffected by the attachment
Tim/Alex
2
Range of the Device
Location of the animal unknown
The animal becomes out of range of the device
3
3
9
Wireless data transmission test
Eric/Joe/Frank
3
Enough holding force for the attachment to the arrow
Tracker
doesn’t
stay on arrow during flight or impact
Not enough holding force to the arrow
3
3
9
Test by applying a pulling force to the attachment of the arrow
Tim/Alex
4
Unfamiliarity with wireless Transmitting/Receiving
Difficulties choosing the best method for signal translation
Lack of RF/wireless transmission knowledge
3
3
9
Seek help from an expert in the signals field (
ie
. Dr.
Amuso
)
Eric/Joe/Frank
5
Circuitry size constraint
Weight and size of arrow becomes too robust
Unnecessary circuitry
3
3
9
Keep the circuitry small enough to fit into your palm
Eric/Joe/Frank
6
Placement of mechanism
onto
arrow
Cause injury/ harm to the user or effect the accuracy of the shot
Placing the device towards the butt of the arrow
3
3
9
Avoid placing the device towards the back or mid section of the arrow
Tim/Alex
7
Transceiver Dimensions
Increases arrow attachment size
To fit the transceiver,
the attachment will have to be enlarged
3
2
6
Adjust
arrow dynamics of the arrow attachment, or find a smaller RF transceiver
P14347
Risk Assessment ASlide35
Risk Assessment B
ID
Risk Item
Effect
Cause
Likelihood
Severity
Importance
Action to Minimize Risk
Owner
8
Loss of Signal Transmission
Animal
becomes lost
Heavily wooded areas or obstacles blocking
the signal
of the attachment
to the user device
2
3
6
Explore all frequencies for which the RF components
can operate on, and select the frequency which provides the most minimal interference
Eric/Joe/Frank
9
Animal
falling on top of attachment
The
signals from the attachment will be seriously if not completely attenuated
The body of the animal causes a median, for which signals
cannot pass through
2
3
6
Operate
in a range of frequency, which signals can pass through the deer carcass
Team P14347
10
Detachability of the device
If the device doesn’t detach the attachment could block the penetration of the shot
Faulty detachment mechanism
2
2
4
Test the device on different material surfaces
Tim/Alex
11
Part Lead Times
Delays in the projection
Procrastination
2
2
4
Ensure the parts are ordered ahead of schedule
Team P14347
12
Avoiding Patent Infringement
Product
can’t
go to market
Lack of attention to detail and patents
1
2
2
Be aware and research all current restraints by patents
Team P14347
13
Durability of attachment (Reusability)
Device is fragile and requires replacing periodically
Weak materials and poor construction of device
2
1
2
Ensure that weak, brittle materials are a last resort
Tim/Alex
14
Budget Conservation
Going over budget
Poor budgeting
1
1
1
Draft and follow a strict budget
Team P14347
15
Geometry of the device
An
alarming
sound,
alerting
the animal
Bulky geometry
1
1
1
Computation model of the aerodynamic drag of the attachment
Tim/
AlexSlide36
Test PlanSlide37
Bill of MaterialsSlide38
Project Plan for MSD II
Prototyping Design3D Printing Enclosures
Application Development (for Google Maps Integration)Integrate the User Device ModuleMonitor budgetTest for engineering
requirements
Utilize summer for further progressSlide39
Questions?