St. Vincent Advancement TeamDesign ReviewApril 17, 2012

Overview

•Introductions•Hippotherapy•Fatigue Device•HEC (Hand Eye Coordination)•Ball•Database

2

Project Partners

•St. Vincent Hospital

3

Hippotherapy

Jacob EissesGeunho Choi Anthony Reyes

What is Hippotherapy?

•Hippotherapy ▫A physical, occupational, or speech and

language therapy treatment strategy that utilizes equine movement

•Why the Horse?

5http://www.americanhippotherapyassociation.org

5

Hippotherapy cont.

The horse provides a dynamic base of support, making it an excellent tool for increasing trunk strength and control, balance, building overall postural strength and endurance, addressing weight bearing, and motor planning.

6

Who Can Benefit?

•Attention Deficit Disorder

•Autism •Cerebral Palsy •Closed Head Injury •Developmental Delay •Down Syndrome •Emotional Disorders

• Hearing Impairment• Multiple Sclerosis• Muscular Dystrophy• Paralysis• Scoliosis• Spinal Bifida• Traumatic Brain Injury

7

Project Partner Needs

•Hippotherapy…▫ System that simulates horseback riding for

children who have underdeveloped muscle allowing children to gain: Strengthen core muscles Posture Motor function Balance

▫Small children under ten Debilitating illnesses and movement dysfunction Poor posture Limited mobility

8

Project Partner Info • Need for Hippotherapy sessions on site• Amazing results but costly-Average Hippotherapy ride cost ≒ $75~150 per session-Normally runs twice a week ≒ $7,200~14,400 per year• Accessibility for urban families-barns are not near by big cities-saving travel distance (=cost)

9

Project Specification Overview

•Design Goal▫Develop a working prototype

Start with simple design Modify prototype to fore bar design if necessary

▫Design steering mechanism▫Design roll cage like frame to provide safe seat

belt to prevent from falling off▫Make a handle for therapist to push▫Childproofing

10

Two different designs

11

• Design #1 uses misshapen wheels• Design #2 uses normal wheels that drive 4-

bar mechanisms to move saddle

The following prototype is build from design #1

Prototype Specifications • Overall dimensions: width 30” length 57.5”

height 38” • Chassis dimensions: 25” wide, 51” long• Barrel is attached to chassis using 4 11” 2 by

4 legs

12

The barrel

•Semi circle ½ inch plywood•Framed with strips of ½”

plywood 2” wide•17” wide, 37” long, 10” tall•4 semi-circle ribs•2 by 4 base

13

Platform for wheel testing

Goals• Mimic horse

steps• Test different

wheel designs

14

Front Wheel Shape

15

• Tested 6 pedal flower and oval

• Flower shape worked better than oval

• Right wheel connected to left to maintain offset

• Each time wheel rolls onto pedal, mimics a step by the horse.

Rear Wheel

• Oval shape Provides up and down motion

• The change in radius causes change in height

16

• Wheels will be made using ¾” plywood• Used Plasti-dip to provide traction• Difference between the radius of the major and minor axis

will determine the change in height• Flower will mimic 6 steps per rotation• Oval wheel will mimic 2 steps per rotation

17

Determining wheel shape and size

4 wheel vs. 3 wheel

18

•4 wheels could not keep all wheels in contact•3 wheel design provides good movement and

stability

19

Journey of building the ride #1Build design #1 Test full scaleIf necessary, modify the prototype to

utilize four bar mechanism

Wheel Design•Front

20

• Rear

21

Determining Front Wheel Shape• Considered 5,6 and 8 pedals.

• More pedals equals easier to rotate

• Used trig and geometry to determine the change in height as a function of edge length.

• For octagon change in height=.1*side length

• For hexagon change in height=.13*side length

• For pentagon change in height=.5*side length

22

Determining Back Wheel Shape• Diamond Shape

with rounded edges• Major radius 10”• Minor radius 8”• Change In height

equals 2”

Fixing Axles on wheels1. Cut out a groove for a pin2. Drill through the axle3. Put a pin through the drilled-hole4. Glue the pin and wheel together

23

24

• Rear wheel slid instead of rotating• Left to right movement broke the top layer of the

plywood wheel allowing free rotation• Movement provided from front wheels provided

positive results

Testing

Recap and possible failure report

•Plasti-Dip will NOT last long

-failed after 2~3 feet run

25

26

o Failure around the axle due to excessive torque

-19 ft-lb @ stationary-equivalent to pneumatic pulse driver

Recap and possible failure report

27

Additions to Prototype

• Add a push bar • Replace plasti-dip with

bicycle inner tube rubber• Replace back wheel with an

oval• Have metal plates welded

onto axels so that wheels can be bolted onto axels

After completion of Prototype•Aesthetics

▫Cloth/fabric to cover the frame and sharp edges

•Extra Safety▫Childproof edge

guards▫Seat belt for saddle to

secure patients better

28

29

Budget (design #1) Project 2: Hippo Therapy (Non-Mechanical)

  Description & Justification

Fall 2011 Actual Expenses

Spring 2012 Predicted Expenses

Spring 2012 Actual Expenses

F11 Actual + S12 Predicted

Total Expenses

Funds from Other Resources

2.14x 8ft 2 by 4s   $75.00 $11.88   $7.92  

2.22x 4ft by 8ft 3/4in plywood   $100.00 $40.52   $40.52  

2.32x 1in metal tubing   $40.00 $7.99   $7.99  

2.44x bearings   $30.00 $47.12   $28.00  

2.5machining   $50.00 $0.00   $0.00  

2.6Cloth   $20.00 $15.00   $10.00  

2.7Plasti-dip   $15.00 $6.88   $8.00  

2.8Wheels/Parts   $50.00 $0.00   $0.00  

2.9Aesthetic Materials   $40.00 $0.00   $0.00  

2.10Epoxy   $20.00 $15.67   $0.00  

  TOTAL $0.00 $440.00 $145.06 $0.00 $102.43 $0.00

Total cost of prototype: $145.06

30

Project Timeline  Week #

Activity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Semester Project Planning                                

Project Partner Meeting (if able)                                

Research: Hippotherapy, Project Partner Needs                                

Research: Current Design                                

Sketches                                

Research: Materials                                

Purchase Materials                                

Design Review (all)                                

Build                                

Testing/Modifying                                

Finalize                                

Design Review/Evaluation(all)                                

End of Semester Report                                

Additional considerations

31

•Size▫Able to hold children up

to 5ft tall•Comfortable

▫Thin cushion•Safe

▫No sharp edges▫Less likely for

children to fall

•Saddle▫Enables more muscles

activity•Easy to clean

▫Removable/cleanable saddle blanket

•Strong▫Need to hold 60-100

lbs

32

Questions?

33

Fatigue Device TeamMatt CarpenterEmily McCuenErica Zanath

Project Background

▫Project was started in Spring 2010▫Motivated by physical therapists need▫Need a device that can measure fatigue in

arms▫Need to provide therapists with quantitative

assessment▫Will be used with children ages 6-10

Keep children engaged

34

Design Requirements

•Therapist Requirements▫Quantitative▫Easy to use▫Engaging▫Adaptable

•Functional Requirements▫Size – Ipod Nano▫Weight – Wrist watch

35

Previous Design

•Four games in one box▫Rotating box▫Works different arm muscles

•Problems▫Not adaptable▫Not portable

36

Current Design

•Wireless interfacing▫Two accelerometers on wrist▫One accelerometer on elbow

•Utilization of pre-existing games▫Different activities for various age groups/skill

levels▫Different activities for various muscle groups

•MATLAB and Arduino programs created to measure fatigue for each motion used

37

Calculating Fatigue

•Use accelerometers to find accelerations▫Use accelerations to calculate forces▫Set fatigue limit at some percent of

maximum force•Plot forces of each hit

▫Stop game after the fatigue limit is passed•Sampling Rate

▫Need to balance accuracy and efficiency

38

What is Arduino?

•Open source microcontroller•Very versatile•Wide array of expansions•Extensive community

39

Our Current System

40

Software

MATLAB-based programming

Serial communication interface

Continuous data streaming

Real-time acceleration plot

User interface Fatigue level tracking

41

User interface •Control center for the

therapists•Will allow therapist to:

▫Start and end therapy and recordings.

▫Input patients’ arm weight

▫Input target fatigue level•Can choose motion

types•Display the force graph

42

Ideal Output

43

Games, Motions, and MusclesDrumming Motion

• Consider the force of the deltoid, pectoral, and bicep muscles

• Games▫ Hungry Hungry Hippos▫ Dribbling a basketball▫ Whack-a-mole▫ Drum set

Punching motion

• Consider the forces of the tricep

• Games▫ Punching Bag

44

Device encasing

•Use iPod Nano armband•Allows adjustable fit

Design Failure Mode and Effects Analysis (DFMEA)•Evaluated possible failures of each

component▫MATLAB Program

Error reading data in▫Interface to Therapists

Therapist entering wrong percentage▫Wristbands with Sensors

Sensor moving around▫Physical Games

Games become worn•Evaluated device as a whole

46

Issues to be addressed

•Software▫Communication between Arduino and

MATLAB▫MATLAB Program

LabVIEW or Visual Basic

47

Future Goals▫Complete Software Programming for two

motions▫Complete hardware assembly

Including encasing for hardware▫Test and Redesign as needed▫Incorporate other muscle groups▫Add more games, with more complex

motions▫Smaller, condensed version of wrist/elbow

bands

48

49

Future Version

•All components on one custom circuit board▫More robust▫Smaller▫Lighter

Questions?

51

HEC TeamKaustuv Dasgupta Jinyuan Tian

•St. Vincent Pediatric Rehabilitation Center

•In Indianapolis, Indiana•Working with physical therapists

▫Patients are children ages 3-14 years old struggling with motor and visual skills

53

Our Project Partner

•Develop a method of testing, recording, and quantifying a patient’s hand eye coordination skills

•Quantified data will be used by physical therapists to track patients’ improvement with therapies

•Needs to be completed with young patients in mind

54

Project Goal

•HEC project began in Fall 2010•Games have been developed in past

semesters •The Rockband drum hardware was

selected early on •Fly Swat Game and Reaction have been

completed•Simon Game is under development

55

Project History

Timeline –Spring 2012

56

Hardware

New piezoAttached with putty

57

•Calculates the average response time for the child.

•Visual-Spatial Relation

Fly Swat Games

58

Demo Fly Swat Game

59

•Cymbals/No Cymbals▫Spatial recognition

•2-7 Sequences *•Unlimited Runs

60

Testing and Scoring

• Score total run percentage• Record response time

*http://www.experiment-resources.com/short-term-memory.htmlhttp://www.corporatecoachgroup.co.uk/blogDetail.asp?blogid=183

•Visual Recognition

•Measuring Reaction Time

•Visual Discrimination

Reaction Game

61

Demo Reaction Game

62

•The game is always starting from a pre-defined drum(in this case, red).

•After the game is over, it automatically gets reset to the red drum, for a new run.

•These two modifications address the recommendations.

Issues Addressed for the Reaction Game

63

The ability to store and retrieve previously experienced visual

sensations and perceptions when the stimuli that originally evoked them

are no longer present.

64

What is Visual Memory?

http://www.achievepublications.com/chpt3.htmlhttp://www.teachingexpertise.com/articles/activities-to-develop-visual-memory-1104

•Goal: To test child’s visual memory

•Similar to the Fly Swat game, utilizing the same kit and similar background layout .

Simon’s Game

65

• There would be four drum sets on the background, and drums will light up colors in a random sequence.

• A “glowy” drum color will show the user which drums to remember.

• User need to hit the drum in the same sequence based on memory.

• Results will turn out in terms of reaction time and hit correction percentage.

• The total number of drums to remember can be decided based on the number of runs selected.

How Simon Game Works?

66

Flow Chart of Simon GameInitialize game

Run Random Sequence Function

Run Hitting Register Scoring Function

End

67

Background will light up in a sequence

Let me give you a demonstration

The Simon Game

68

•The current design of Simon game is not fully functional according to the direct user’s needs. For the future team, they need to develop a new criteria of calculating the percentage of correct hits.

• It is important to consider more about the sequence to be remembered and the number of hits, not just the latter.

Issues

69

•The scoring for the Simon’s Game needs to be programmed. For now, we are using the old scoring algorithm from the Reaction Game.

•Figure out a possible way to display the drum sequences at the top of the screen.

Transition

70

Questions?

71

BALL Team

Katie SandlinJessica PlaceTom Yang

Project Partner•St. Vincent Pediatric Rehabilitation Center▫Jennifer Suba

Physical Therapist at Carmel Location•Project Consultant

▫Mindy GutweinPhysical Therapist at St. Elizabeth

Project Identification•Design a ball containing an accelerometer to record force of a patient’s kick.

•Design a database that allows therapist to track sessions of individual patients.

75

Operational OverviewSuba places

the ball on the ground

Patient kicks the ball down

the hall

The accelerometer picks up the acceleration

Sends it to wireless

handheld device

Data recorded

Repeat for 5-10

minutes

76

Progress of the BALL Team

•Project started in the Fall of 2010▫Research was conducted▫Initial testing

•Spring 2011▫Completing research

•Fall 2011 ▫Finalizing materials▫Prototyping

Timeline• Week 7

▫Exported existing codes to Arduino board ▫Began final code between Arduino and accelormeter

• Week 8-9▫Have all codes working with the Arduino board ▫Build circuit board

• Week 10-12▫Purchased OtterBox for protective case and began

construction▫ Finished calibrating the accelerometer

• Week 13 -15▫Finish construction of ball▫Begin testing

78

Structural Design Concept

• 1: OtterBox• 2: Foam Ball• 3: Foam Layer• 4: Outer Covering

of Soccer Ball

1234

Current Progress

•Began construction of second prototype

•Finalized codes for hardware

•Purchased power source

•Soldered hardware components

•Finished calibrating accelerometer

Current Progress

Current Progress

Components of Wireless Device

•3-axis analog accelerometer

•Arduino Microcontroller

•X-Bee

▫Wireless Transmitters and receiver

Working process

Sensing Data

Processing data and sending data

Receiving data and push to user interface

User interface interpret data into force and graph(done

this part)

Progress Continued

•Circuit soldered

▫Make sure firm connections

▫Basic step for the circuit to physically work correct

▫Had continuously getting garbage read before

Calibration of Sensor

•Not physically changing the sensor itself

•Relation between sensor outputs and real physical value

•Relation of sensor’s output and gravity acceleration

Other progress•Xbees configured (pair up two xbees)

•Instructional code updated

Questions and Suggestions

•Any feedback is greatly appreciated.

Database

Ben FrauhigerKatie Sandlin

Purpose

•To construct a database that will fulfill each project partners’ specifications.

Current Progress

•Local Host▫php and MySQL

•Constructed separate database for each▫HEC▫Ball▫Fatigue

•Backend completed •Frontend in progress

▫Currently working on search ability and storing data

Specifications

•Patient Database▫Patient ID ▫First and Last Name▫Birth date

•Project Database▫Date of Session▫Patient ID▫Progress and Goals▫Measurables

BALL Project Database

•Patient ID▫Component that will be searchable

•Measurables▫Force▫Deviation from Midline

•Goals and Improvements•Date of session

▫More recent at beginning

Current Progress

Current Progress

Front End

•Data input▫Local host▫Web browser

•Security▫User ID and Password

Patient Table

Database Table

Issues for Next Semester

•HIPPA Regulations•Security•Aesthetics

Questions?

Thank you for coming!!

99