Balance Tower (P12005)

Vinay Barde : Program ManagerAlfred Lee: Lead CEJason Marks: Lead EEAlexis Reusch: Program Facilitator

Balance Tower(P12005)

Project DescriptionCustomer NeedsEngineering SpecificationsConcept SummarySystem ArchitectureDesign SummarySystem Testing ResultsObjective Project EvaluationsSuggestions for Future Work

Agenda

Seated balance to help physical therapist teach wheel chair bound patients to improve the strength of their core muscles.

Currently have a tower that is built that has seven large panels in a vertical line that are separated by banks of 3 tri-colored LEDs.

When activated the LED’s will be blue, if the patient touches the target they will turn green and if they miss they will become red.

There are two games in the MCU : Random & Timed Trial Second tower will be added to the game to add more

challenges for the patients. This tower will be a slave to the first tower and help to increase a patients side to side reaching distance.

Project Description

Customer Need

#Description Comments/Status

4 …that engages the clients Check6 …with measurable outcomes Check7 Safe for physical therapists Check8 Safe for clinic clients Check9 Easy for Physical Therapist to use Check

10 Easy for patient to use Check11 Minimal repair cost Par

12Can be used with only one attending physical

therapist Check13 LED indication when the tower is powered on Check14 Option to vary timing delay of panels Check15 Selection of which panels are on Check20 Duration of games need to be increased Check21 Add audio to indicate succesful touch of panel Incomplete

22Measures how far patient is from tower (first knuckle

to the tower) Check

24Rechargable batteries that can be removed from

tower Check

Customer Needs

Engineering Specifications

Metric No.

Need Nos.

Engineering SpecificationsMetric Units

Ideal Value

Relationship to System Architecture

1 7,8 Time to sanitize sec 60 Capacitive Buttons2 5 game response time ms 40 MCU3 9 set up time ( movement of towers) mins 1 System4 1,3,14 Time to activate touch sensitive panels ms 20 Capacitive Buttons8 6,23 Functional reach measurement accuracy in 0 Sensor9 9 Time to program games minutes 2 MCU13 2,9,11 Weight for entire system (per tower) lbs 15 System16 9,24 Time to replace batteries min 1 System19 13 LED indication to be ready to use sec 3 MCU, LED22 15 LED Indication for which buttons are selected sec 5 MCU, LED23 17, 18 Device will display results (hit, miss, average time, separate results per tower) boolean yes LCD, MCU

Concept SummaryMSP430 BoardFunctional Reach Wireless

System Architecture

SoftwarePCB

Design Summary

System Testing Results

Turn tower on Select game via user input buttons For random:

Chose time of each round# of rounds

For sequence: Chose time of each round# of rounds

Press any key to start Results displayed, hits, misses after completion Option to play again

Demo

SuccessFunctioning towerFunctional reach testPCBUpgrade to MSP430

+ TI resources now available

Objective Project Evaluations:Success and Failure

Failure Incorporation of second

tower Wireless Automated functional

reach Not capacitive touch

based Only two games

The previous MCU used a different complier, which RIT no longer had a license for

The previous code used was not up to date on edge The current touch plates on the towers are not capacitive

touch plates, they are grounding plates, which required a comparator circuit to make work

Due to troubles encountered, the wireless was never completed and the functional reach was never automated.

Reasons for Failures

Capacitive touch buttons• Suggested to use selected capacitive touch

chip Add additional towers Wireless communication• suggested to use selected wireless device

(eZ430-RF2500) Automate functional reach Create additional games Add sound

Suggestions for Future Work

Electrical                Part Name Manufactur

erManufacturer

Part # Distributor Distributor Part # Unit Price Quantit

yTotal Price

1 RGB LED's Kingbright WP154A4SUREPBGVGAW DigiKey 754-1492-ND $1.37 60 $82.20

2 Microprocessor Board TI MSP-

EXP430F5438 - - $149.00 2 $298.00

3Rechargeable Batteries and

ChargerTenergy - All-Battery.com

8 Bay charger and 16

Batteries$36.49 1 $36.49

4 Voltage Regulator (3.3v) - - SparkFun COM-00526 $1.95 4 $7.80

5 EZ430-RF2500 TI EZ430-RF2500   - $49.00 1 $49.006 Ultra Sonic Ping

Sensor Parallex 28015 DigiKey 28015-ND $29.99 2 $59.987 MSP430 USB JTAG TI MSP-FET430UIF - - $99.00 1 $99.008 PCB Advanced

Circuits - Advanced Circuits - $33.00 3 $99.00

9 EZ RF Header Mill-Max 850-10-006-20-001000 ARROW - $1.14 2 $2.28

10 LCD Screen Sparkfun GDM12864H Sparkfun GDM12864H $19.95 1 $19.95

11 TransistorsFaichild

Semiconductor

2N4401D75ZCT-ND Digikey 2N4401TAR $0.21

30 $6.3012 Surface Mount

Resistors 4.7K Panasonic P4.7KGDCT-ND Digikey ERJ-3GEYJ472V $0.15 50 $7.4613 Surface Mount

Resistors 820K Panasonic P820KGCT-ND DigiKey ERJ-3GEYJ820V $0.01 50 $0.4614 Surface Mount

Resistor 56 Panasonic P56GCT-ND DigiKey ERJ-3GEYJ560V $0.01 100 $0.7015 Surface Mount

Capacitors .1uFMurata

Electronics 490-1524-1-ND DigiKey GRM188R71E10KA01D $0.03 20 $0.52

16 Surface Mount Capacitors 10uF

TDK Corporation 445-6853-1-ND DigiKey C1608X5R1A10

6M $0.46 10 $4.5717 LM339 TI Radioshack 276-1712 $2.19 2 $4.38

Electrical BOM

Mechanical  Part Name Distributor Distributor Part # Unit Price Quantity Needed Total Price1 PVC Sheet McMaster-Carr 8747K217 $256.73 1 $256.732 Aluminum Sheet McMaster-Carr 8975K32 $50.50 2 $101.003 Clear LED Window McMaster-Carr 8574K32 $26.31 1 $26.314 Plate and Structure

Screws McMaster Carr 91772A253 $11.54 2 $23.085 LED Window Screws McMaster-Carr 91735A242 $5.33 2 $10.666 Base Gempler's 176426 $21.30 2 $42.607 Set rods McMaster-Carr 87025K29 $1.18 ( per ft) 5 $5.908 Rubber Edge McMaster-Carr 3482K4 $2.44 ( per

foot) 20 feet $48.809 Foam halo Cases By

Source, Inc. FS06   24"X36" $24.4610 Handles Lowe's     4 $3.2811 Tape Mreasure Lowe's     1 $11.7412 Velcro          13 Velcro Joanne Fabrics     15x34 $16.4714 Straps StrapsWorks     2  15 Castors Lowe's     4 $4.97

Mechanical BOM

Questions???