Wildlife Tracker:

Systems Design

Review MSD I

Team P14347

Agenda

Project Background

Customer Requirements

Engineering Requirements

Functional Decomposition

Physical Architecture

Morphological Analysis

Concept Selection

Risk Assessment

Test Plan

Project Plan

Team P14347 & Introduction

Member Role

Eric Peterson Team Leader / EE

Alex Pelkey ME

Joesph Ciccarello EE

Frank Meola EE

Timothy Nash ME

Current State & Issues

Bow and arrow hunting is a popular outdoor

activity. An animal fatally shot with an arrow may

not drop in place

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

Desired State

Wildlife tracking device will be deployed with shot

arrow and detach upon impact

Allows a bow hunter to track fleeing target using

handheld device

Does not negatively impact the accuracy of the

hunter’s shot

Durable and reusable, with long lasting power

source

Leads to less wasteful animal deaths in bow

hunting

Stakeholders Primary Customer: Dr. Eli Saber

Faculty Guide: Art North

End Users: Bow Hunters

Other: Hunting Stores/Distributors, Game Wardens,

Environmental Activists

MSD Team 14347

Project Deliverables

Re-attachable tracking device that connects onto

an arrow

Handheld device that monitors the location of the

tracking device

User Manual

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

Customer Requirements

Customer

Rqmt. #Importance Description

CR1 9 The device locates the wildlife after being shot.

CR2 9 Device detaches from arrow and attaches to wildlife upon impact.

CR3 3 The device functions in heavily wooded areas (2000 meters ideal. 300 meters minimal)

CR4 9 The device does not impede the accuracy of the shot, or at least produces repeatable deviations

CR5 3 The device does not impede the range of the shot

CR6 1 Tracker costs under $50

CR7 3 Arrow attachment is reusable up to ten times

CR8 9 Arrow attachment "sticks" to wildlife with enough force to not fall off

CR9 3 Tracking is active for up to 90 minutes. 30 minutes minimal.

CR10 1 The arrow attachment is one piece

CR11 1 Arm/disarm feature for arrow attachment is present.

CR12 3 Used for for both deer and turkey hunting

CR13 3 Durability/temperature resistance is suitable for Oct.-Dec hunting

CR14 9 Arrow attachment does not fall off due to force of the shot

CR15 9 User device tracks the location of the arrow attachment

CR16 3 Arrow attachment does not generate a noise when shot

Engineering Requirements

rqmt. # Importance Source Function Engr. Requirement (metric) Unit of MeasureMarginal

ValueIdeal Value

S1 3 CR3 System Functionality Transmit Range meters 300 2000

S2 2 CR4, CR5 System Operation Weight grams <5.8 <2.9

S3 1 CR4, CR5 System Operation Aerodynamic Drag Newtons

S4 3 CR8 System Functionality Holding Force (Target) Newtons 1.12 2.24

S5 2 CR14 System Functionality Holding Force (Arrow) Newtons

S6 2 CR13 System Robustness Operational Temperature degrees Celsius 0 to 30 minus 30 to 50

S7 3 CR4 System Functionality Change in Arrow Accuracy mm from center at 20m <50 25

S8 1 CR5 System Functionality Change in Arrow Range % 10 5

S9 3 CR9 System Robustness Operation Time hours 3 12

S10 2 CR7, CR10 System Robustness Product Reusability # of uses 5 10

S11 3 CR1 System Functionality Accuracy of Tracking meters per meter 1 per 50 1 / 100

S12 1 CR6 System Production Prototype Cost $$ 150 100

S13 1 CR6 System Production Manufacturing Cost $$ 90 50

S14 2 CR11 System Functionality Arm / Disarm Feature binary No Yes

S15 1 CR15 System Portability Handheld User Tracking Device binary No Yes

S16 2 CR12 System Functionality Arrow Compatibility % arrows in market 40 100

S17 2 CR4, CR5 System Portability Volume of Arrow Attachment mm 3̂ 75 30

Requirement Mapping Engineering Requirements

Tran

smit

Range

Weigh

t

Aerodyn

amic

Drag

Holdin

g Forc

e (T

arget

)

Holdin

g Forc

e (A

rrow

)

Operat

ional

Tem

perat

ure

Change

in A

rrow A

ccura

cy

Change

in A

rrow R

ange

Operat

ion T

ime

Product

Reu

sabilit

y

Accura

cy o

f Tra

ckin

g

Proto

type C

ost

Man

ufact

uring

Cost

Arm /

Disarm

Feat

ure

Handheld

Use

r Tra

ckin

g Dev

ice

Arrow

Com

patib

ility

Volum

e of

Arrow

Atta

chm

ent

Cu

sto

mer

Nee

ds

The device locates the wildlife after being shot. X

Device detaches from arrow and attaches to wildlife upon impact. X X

The device functions in heavily wooded areas (2000 meters ideal. 300 meters

minimal)X

The device does not impede the accuracy of the shot, or at least produces

repeatable deviationsX X X X

The device does not impede the range of the shot X X X X

Tracker costs under $50 X X

Arrow attachment is reusable up to ten times X

Arrow attachment "sticks" to wildlife with enough force to not fall off X

Tracking is active for up to 90 minutes. 30 minutes minimal. X

The arrow attachment is one piece X

Arm/disarm feature for arrow attachment is present. X

Used for for both deer and turkey hunting X

Durability/temperature resistance is suitable for Oct.-Dec hunting X

Arrow attachment does not fall off due to force of the shot X

User device tracks the location of the arrow attachment X

Arrow attachment does not make a noise when shot X

Cu

sto

mer

Nee

ds

Functional Decomposition Locate Wildlife

Attach to Arrow

Access Arrow

Attach to Wildlife

Does not alter Shot

Detach from Arrow

Link to Animal

Remains attached during

Flight

Protect Functional Integrity

Safeguard Electronics

Indicate Location of Attachment

Device

Transmit Signal

Activate Transmitter

Receive Signal

Activate Receiver

Process and Interpret Signal

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/Rece

ive Signal Transponder GPS Antenna

Cell Phone

Signal Radio Waves WiMAX

Indicate

Location Audio Speaker Visual-Map

Visual-Blinking

LED Text on Screen Dial Indicator

Protect

Functional

Integrity

Enclosure Potting

Compound Airbags?

Activate

Transmitter Accelerometer On/off switch

Animal Circuit

Activation

Concept Selection

1 2 3 4 5Metrics Importance Spring-Dowel Pin Clip Adhesive Magnet

1 Ease of Design 2 4 2 1 3

2 Effectiveness 1 2 1 4 3

3 Cost 3 4 1 2 3

4 Weight 1 3 2 1 4

TOTAL 25 10 13 22

0.04 0.1 0.076923077 0.045454545

1 2 3 4 5Metrics Importance Barbed Hook Pronged Tip Spring-Activated Clamp Retractable Prongs

1 Ease of Design 2 1 2 4 3

2 Effectiveness 1 2 1 4 3

3 Cost 3 1 2 4 3

4 Weight 1 1 2 3 4

TOTAL 8 13 27 22

0.125 0.076923077 0.037037037 0.045454545

1 2 3 4 5Metrics Importance Transponder GPS Antenna Cell Phone Signal Radio Waves WiMAX

1 Ease of Design 2 2 5 3 1 4

2 Effectiveness (Range) 1 3 1 5 4 2

3 Cost 2 2 4 3 1 5

4 Weight of Transmitter 1 2 5 3 1 4

5 Power Consumption 2 2 5 3 1 4

TOTAL 17 34 26 11 32

Solution

Attach to Arrow

Attach to WildlifeSolution

Transmit/Receive SignalSolution

Concept Selection

1 2 3 4 5Metrics Importance Audio Speaker Visual-Map Visual-Blinking LED Text on Screen Dial Indicator

1 Ease of Design 1 3 5 1 4 2

2 Effectiveness 1 5 1 4 3 2

3 Cost 2 3 5 1 4 2

TOTAL 11 11 6 11 6

0.090909091 0.090909091 0.166666667 0.090909091 0.166666667

1 2 3 4 5Metrics Importance Enclosure Potting Compound Airbags?

1 Ease of Design 2 1 2 3

2 Effectiveness 1 1 2 3

3 Cost 3 2 1 3

4 Weight 1 1 2 3

TOTAL 10 11 21

0.1 0.090909091 0.047619048

1 2 3 4 5Metrics Importance Accelerometer On/Off Switch Animal Circuit Activation Limit Switch

1 Ease of Design 2 1 2 4 3

2 Effectiveness 1 1 3 4 2

3 Cost 3 2 1 4 2

4 Weight 1 1 2 3 4

TOTAL 10 12 27 18

Indicate LocationSolution

Protect Functional Integrity

Activate TransmitterSolution

Solution

Concept Selection Solution Number--> 1 2 3 4 5

Attach to Arrow 2-Clip 2-Clip 2-Clip 1-Spring-Dowel Pin 2-Clip

Attach to Wildlife 1-Barbed Hook 2-Pronged Tip 1-Barbed Hook 2-Pronged Tip 1-Barbed Hook

Transmit/Receive Signal 4-Radio Waves 4-Radio Waves 1-Transponder 1-Transponder 4-Radio Waves

Indicate Location 3-Blinking LED 5-Dial Indicator 3-Blinking LED 3-Blinking LED 5-Dial Indicator

Protect Functional Integrity 1-Enclosure 1-Enclosure 1-Enclosure 2-Potting Compound 1-Enclosure

Activate Trandmitter 1-Accelerometer 2-On/Off Switch 1-Accelerometer 2-On/Off Switch 1-Accelerometer

Concept Selection

Physical Architecture

Risk Assessment ID Risk Item Effect Cause

Lik

elih

oo

d

Se

ve

rity

Imp

ort

an

ce

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 attach

to arrow

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

on the 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 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

8 Avoiding Patent

Infringement

Product cannot go to

market

Lack of attention to

detail and patents 2 2 4

Be aware and research all current

restraints by patents Team P14347

9 Part Lead Times Delays in the projection Procrastination 2 2 4 Ensure the parts are ordered ahead

of schedule Team P14347

11 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

12 Budget Conservation Going over budget Poor budgeting 1 1 1 Draft and follow a strict budget Team P14347

13 Geometry of the device

Causes an alarming

sound which could alert

the animal

Bulky geometry 1 1 1

Computation model of the

aerodynamic drag of the

attachment

Tim/Alex

Test Plan

rqmt# Function p# Plan

S1 Transmit Range

P1 Two group members will find each other using the transmitter and receiver used for the project and document results

S11 Accuracy of Tracking

S2 Weight P2 Place device on scale, measure

S3 Aerodynamic Drag P3

If necessary, tether device inside of a wind tunnel and measure results from force gauge if arrow range is deemed problematic while experimenting with the archer

S4 Holding Force (Target)

P4 An experienced archer from the archery club will shoot multiple materials and a group member will document results

S5 Holding Force (Arrow)

S10 Product Reusability

S6 Operational Temperature P5 Throw device in freezer and decrease the temperature until device stops working

S7 Change in Arrow Accuracy

P6 An experienced archer from the archery club will shoot multiple arrows with the device attached and will document results with input of the archer

S8 Change in Arrow Range

S12 Prototype Cost

P7 Design product, create B.O.M., get quoted from a few manufacturers

S13 Manufacturing Cost

S9 Operation Time P8 Leave device on and running and document battery life time

S16 Arrow Compatibility P9 Attach device to multiple brands and styles of arrows

Project Plan (Subsystem

Design)

Action Items List

Gain understanding/knowledge of project-specific

fields (archery, RF, etc.)

Begin purchasing and testing

Start maintaining budget

Fill in engineering requirement gaps

Subsystem Design

Questions?