Design Team 8: Robert Blake Biochemical Craig Goliber Bioinstrumentation Alanna Ocampo - Bioinformatics. BME 4900 December 2009

Transcription

1 Design Team 8: Robert Blake Biochemical Craig Goliber Bioinstrumentation Alanna Ocampo - Bioinformatics BME 4900 December 2009

2 Three assistive devices have been designed for our client, Joey Toce, to allow him greater independence and ease of everyday activities 1. Adapted Hungry, Hungry Hippos Game 2. Adapted Sled 3. Device Control Panel Overview of presentation: Client Background Objective for each project Patents/Pre-existing Products Final Designs Budget Timeline

3 Client: Disability: Description: Joey Toce Mixed Type Quadriplegic Cerebral Palsy Approximately 42 inches with a weight of about 35 pounds. Muscle tone in arms and legs fluctuates, and due to global apraxia, Joey has motor planning difficulties. Furthermore, Joey has a mild form of strabismus, which causes him to have difficulty focusing both his eyes. His trunk region is most effected by the cerebral palsy.

4 1) Adapted Hungry, Hungry Hippos Game The Purpose of this project will be to take an existing H.H.H. board game and modify it so that the client will have full control of the game. Device must provide force required to push on levers without much effort from client 2) Adapted Sled Provide a safe and secure way for the client to be pulled around in a snow sled Support head and trunk and secure client to sled with harness 3) Device Control Panel Remotely control DVD & CD player, and turtle light in his room with portable, easy-to-use control panel Touch sensitive buttons(jelly-bean style)

5 Pre-existing Devices: One such product exists titled Hungry Hippo, manufactured by Enabling Devices &Toys for Special Children Employs large push paddles Priced at $ Proposed Design Meets specifications! Touch-sensitive buttons Simple, customized setup Supplies necessary force on hippo levers at the touch of a button for the client Comparable marketing price! At 35% of prototype cost, can market device for ~$50.00 Problems: DO NOT meet specifications! Required force on paddle is still too large for client

6 Pre-existing Devices: Many toddler/baby sleds exist with large range of prices Ex: Walmart Pelican Baby Sled ($15) and patent-pending Bambino Grande Pull Sled ($150) A couple patents for toddler sleds exist; US Patent D for Toddler Taxi Sled & US Patent D for Toddler Snow Sled Proposed Design Meets specifications! Full support harness provided Full head and back support Comparable marketing price! At 35% of prototype cost, can market device for ~$31.00 D D Problems: DO NOT meet specifications! No harness and/or back & head support are missing

7 Pre-existing Devices: Universal remote controls ($30-$250 or more) Control panels for disabled people at (+accessories $250) Proposed Design Meets specifications! Touch-sensitive buttons Simple, customized setup with bright colors and pictures which facilitate Joey s ability to learn tasks Don t have to lift and point remote (RF) BONUS: Extra range in comparison to IR remotes Comparable marketing price! At 35% of prototype cost, can market device for ~$238 Panel at Enabling Devices Problems: DO NOT meet specifications! Buttons too small System too complex for client s use Must lift and point universal remotes (IR)

8 Subunits: -Motor with swing arm -Push button control -Housing unit Motor & Swing Arm The motor will provide the necessary force to the board games levers. A swing arm will be attached to the motors spindle and will provide the actual interaction between the board game and motor. Motor being used is a 298:1 geared DC electric hobby motor Powered by 6V Provides torque of 46 in-oz Provides an RPM of 70

9 Push Button The push button is used to activate the motor, thus assisting in interaction with the board game. Important for it to be sensitive so little force is needed to press it, and that it has a large surface area. Button being used is jelly-bean styled Will connect to the electric circuit through a 3.5mm mono jack Has a large surface area, and a diameter of 5 and 3/8 inches

10 Housing Unit The housing will hold all of the components together, and allow the device to fit onto the board game with proper positioning. Will be fabricated in machine shop Will be attached onto the board game unit and hold components Have a compartment to hold 4 AA batteries to power motor

11 The sled being used is made of plastic and is strong enough to support the weight of the seat and the client. The seat being used was designed for use as a swing and is made of plastic and is tall enough to support Joey s head without additional modification. Seat has an adductor between the legs, as well as a full harness built into the seat to secure his shoulders and waist.

12 The following CAD diagrams show how the seat and sled will be pieced together. Heavy plastic will be used for the mounting brackets, and various nuts and bolts will be used to mate the two components.

13 Figure 1 below describes the general design of the device control panel Components: Two Basic Stamp 2 microcontrollers (MC) for transmission of data between control panel (transmitter, TX) and receiver hub (receiver, RX), IR-RF extender (transceiver 1 & 2) for transmission of IR data via RF waves to DVD player Figure 1: Control panel design

14 Currently continuing with control panel and receiving end prototype for CD player and light. Figures 2 & 3 below are pictures of the current prototype. Figure 2: Transmitting end Figure 3: Receiving end

15 'This code plays/stops the CD player and turns light on/off 'This code is sent from the control panel via the transmitter '{$STAMP BS2} '{$PBASIC 2.5} DO x VAR Word PULSOUT 14, 1200 'Sync pulse for the receiver IF IN0 = 1 THEN 'Play button pushed for CD player x = 0 ELSEIF IN1 =1 THEN 'Stop button pushed for CD player x = 1 ELSEIF IN2 = 1 THEN 'Light button pushed x = 2 ELSE x = 3 ENDIF SEROUT 14, 16468, [ "!", x ] Send data out via serial command LOOP

16 'This code receives data from the control panel via the receiver 'and sends the information to the devices '{$STAMP BS2} '{$PBASIC 2.5} x VAR Word DO SERIN 14, 16468, [WAIT("!"), x] 'receive data via seria command DEBUG? x IF x = 0 THEN 'play CD player HIGH 0 'send out a high output to the play button on CD player LOW 1 'set all other pins to low LOW 2 LOW 3 ELSEIF x = 1 THEN 'stop CD player HIGH 1 'send out a high output to the stop button on CD player LOW 0 'set all other pins to low LOW 2 LOW 3 ELSEIF x = 2 THEN 'turn on the lght HIGH 2 send out a high output to turn on the light LOW 0 'set all other pins to low LOW 1 LOW 3 ELSE HIGH 3 LOW 1 LOW 2 LOW 0 ENDIF LOOP

17 Adapted Hungry, Hungry Hippos Game Item Cost Jumbo Pancake Switch $ Electric DC Motor $ Sheet Metal $ Batteries $ Total Product Cost: $ Shipping & Extra: $ Grand Total: $ Adapted Sled Item Cost Full Support Swing Seat $ /4" Plywood $ 6.00 Stainless Steel Bolts $ 8.00 Stainless Steel Nuts $ 1.00 Total Product Cost: $ Shipping & Extra: $ Grand Total: $ Device Control Panel Item Cost Parallax Transmitter (433 MHz) $ Parallax Receiver (433 MHz) $ Basic Stamp Board of Education (USB) Full Kits $ Jelly-bean buttons (10 max, most probably 7) $ Next-Gen IR-RF extender (418 MHz) $ Plastic material for housing $ Total Product Cost: $ Shipping & Extra: $ Grand Total: $ Total Cost For Team 8 Projects: $ 1,641.00

18 Time Period 11/30-12/4 Task -Complete design of the housing unit and finish purchasing components 12/4-12/11 -Manufacture swing arm in machine shop 12/11-12/18 -Attach swing arm to motor and test for proper operation 12/18-12/25 12/25-1/1 1/1-1/15 -Wire electrical circuit for motor control, and test for proper operation -Test motor and swing arm for proper operation and ensure sufficient force is provided -Manufacture housing unit and any additional parts in machine shop 1/15-1/22 -Assemble all of the components into housing unit 1/22-Completion -Test system and troubleshoot any problems

19 Time Period Task 11/30-12/4 -Determining how to best mount seat to sled 12/4-12/18 -Manufacture and purchase pieces necessary for mounting 12/18-Completion -Attach seat to sled and ensure proper construction

20 Time Period 11/30-12/14 12/28 1/4 1/4-1/11 1/11-1/18 1/18-1/25 1/25-2/1 Task -Finalize microcontroller (MC) code and prototype (with switches, MC, TX, RX, and LED outputs from receiving hub) -Order plastic enclosures for panel and receiving hub -Start wiring jelly-bean switches into panel prototype and test -Start wiring receiving end outputs from MC into switches of CD player and light and test -Continue testing with newly wired jelly-bean switches & CD player & light -If time allows, work in connector on receiving end -Begin integrating IR-RF extender in panel; open up remote circuitry & test transceiver within remote circuitry with receiving end & DVD player -Continue to test transceiver -Work on wiring jelly-bean buttons into remote and test

21 Time Period 2/1-2/8 2/8-2/15 2/15-2/22 2/22-2/29 2/29-3/-3/1 3/1-3/8 3/8-end Task -Work on integrating transmitter and remote into one power source with MC and battery in panel & test -Power the transceiver with main power source -Continue testing & working on powering panel parts with one power source -Setup power source with adapter in receiving hub -Solder/screw parts into panel -Cut holes in panel cover for buttons -Solder/screw into receiving hub -Make holes in hub for adapter cord & wires for the devices -Tie up loose ends Continue testing

22 Dr. John Enderle Mr. James Paolino The Toce Family NSF