epics - glass heard design review 1 (fall 2014) [final]-2 [autosaved]
Post on 19-Aug-2015
8 Views
Preview:
TRANSCRIPT
EPICS Design ReviewGreater Lafayette Special Services TeamHandheld Educational Augmentative RFID Device
Team Introduction
• Richard Wei• Computer Science, Sophomore• Design Lead
• Kristen Kummen• Electrical Engineering, Sophomore• Project Partner Liason
• Frank Oh• Electrical Engineering, Sophomore• Project Archivist
• Amy LoBue• First Year Engineering, Freshman
• Financial Officer
Design Review ~ Fall 2014EPICS ~ GLASS ~ HEARD
Team Members
Project Partner• Professor Wendt
• Department of Educational Studies and Department of Speech, Language and Hearing Sciences
3
Our Goal
Design Review ~ Fall 2014EPICS ~ GLASS ~ HEARD
4
Project Introduction
Users are those with:
• Severe form of autism
• Motor control issues
• Limited or no vocabulary
Currently the most common form of communication system implemented in schools
Design Review ~ Fall 2014EPICS ~ GLASS ~ HEARD
PECS: Picture Exchange Communication System
5
Project Introduction
Goals
• Give children with different speaker an alternate way to learn
• Encourages speech production
• Increases independence
• Used to initiate communication and teach concept of asking/receiving objects
• Begins with single-picture communication and develops into vocal communication
• Demo with Key card
• Verbal communication production
Design Review ~ Fall 2014EPICS ~ GLASS ~ HEARD
PECS: Picture Exchange Communication System
PROTOTYPE DEMO
7
Our Demo/Prototype
Design Review ~ Fall 2014 EPICS ~ GLASS ~ HEARD
8
Project Function Criteria• Ability to bring to classroom and test with students
• Full functionality of recording, playback, pushbutton and RFID
• Touch-sensitive button under Velcro; pressure-prompted playback
• Lightweight, easy to handle and portable
• Clean surface for client; 1 button as opposed to multiple
• Securing agent for device on hand
• Organized storage for RFID keys
• Solution grows with the learner
• Possibility: sync our device with the IPAAC application / appropriate iPad application
• Sliding mechanics to adjust volume
• Safe for children; no sharp edgesDesign Review ~ Fall 2014EPICS ~ GLASS ~ HEARD
9
Midsemester Design Review Feedback
• More elaboration that cards are re-recordable
• Specification of Battery/ Battery Life/ Requirements
• Has the team made from past semester.
• Concerns of triggers for autism with sound.
• The plan for creating a case. If yes, then how does it affect the budget.
• The budget seems not sufficient to build the device
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
Concerns
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
10
SEMESTER PROGRESS
11
Meetings with Professor Wendt
• Display is a distraction to clients
• Any buttons / display for caretaker on side of device
•Simplicity; client surface as clean as possible
•Portable / lightweight
•Hand Strap
• RFID ability to play sound multiple times; touch sensitive
• More pressure with button; the more action needed the better the client learns
• Larger key size
• Organize design for keys
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
12
DESIGN CHANGES
The reasons behind the change:
•It is easier to implement •A click button does not require a large volume case •A click button will enhance touch sensitive and sound sensitive of the device
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
13
FINAL PROTOTYPE DESIGN SKETCH CHANGE
14
FINAL DESIGN
1. Display2. Velcro pushbutton panel3. On/Off button4. Serial port5. Charging port6. Volume Increase7. Volume decrease
15
Hardware Diagram
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
Raspberry Pi
RFID card
Battery
Buttons
RFID reader
Micro SD
Display
Microphone
Speaker
Switch
16
System Controller — Raspberry Pi
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
• Built-in Audio I/O
• Built-in SD Card I/O and Filesystems
• Powerful Linux for Development
• Focus on Functionality more than on Driver Implementation
17
Hardware Diagram
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
Raspberry Pi
RFID readerDisplay
Speaker & Microphone
UARTI2C
I2S
ADC
SPI
18
Hardware Components
• Raspberry Pi
• Microphone
• Speaker
• Push Button
• Battery
• RFID reader
• RFID Cards
• SD cards
• Display
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
19
• Adafruit PN532 Breakout Board
• Adafruit SSD1306 I2C Display
• MCP3008 Analog-Digital Converter
• MiFare RFID/NFC Cards
• Push Button
• Slider Potentiometer
Hardware Components
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
20
• WiringPi
• libNFC
• ArduiPi_SSD1306 Driver
Software Libraries
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
21
CODE SNIPPETS – DISPLAY
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
22
CODE SNIPPETS – RFID SETUP
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
23
CODE SNIPPETS – RFID POLL
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
24
CODE SNIPPETS – AUDIO PLAYBACK
NFC Card UID – 32-bitFile Name – Hexadecimal Value of UID
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
25
CODE SNIPPETS – APPLICATION ROUTINE
• Check Card• Scan Buttons
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
26
PROTOTYPE DEVELOPMENT
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
27
PROTOTYPE DEVELOPMENT
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
28
PROTOTYPE DEVELOPMENT
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
29
USER OBSERVATION
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
30
NEXT SEMESTER
31
Goals for Next Semester
• CAD model
• 3D Shell
• Activities for Clients
Design Review 2 ~ Fall 2013 EPICS ~ GLASS ~ HEARD
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
32
USER MANUAL AND QUICK START GUIDE
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
33
NEXT SEMESTER DOCUMENTATION
• How is our documentation better for next semester?
• Written in-depth
• Frank put in numerous hours
• Every meeting with Professor Wendt, with the team, and every lab was noted
• Notes taken
• What are we doing to make transition to next semester smooth?
• Three out of the four team members are staying on the team
• Experienced; will be able to easily explain project and status to new members
DESIGN REVIEW 2 ~ FALL 2013 EPICS ~ GLASS ~ HEARD
34
FDA APPROVAL
• “The FDA is recommending that medical device manufacturers and health care facilities take steps to assure that appropriate safeguards are in place…”
• “The FDA is not aware of any patient injuries or deaths associated with these incidents nor do we have any indication that any specific devices or systems in clinical use have been purposely targeted at this time.”
• Almost all devices Professor Wendt has worked with are not FDA approved
• Expenses
• Time
• Necessity
35
Project Budget
Unit Price Quantity Item Price
Raspberry Pi Model B+ 39.95 1 39.95
SSD1306 128x32 Display 17.50 1 17.50
Raspberry Pi Breakout Kit 7.50 1 7.50
MCP3008 ADC 3.75 1 3.75
PN532 NFC Breakout Board 39.95 1 39.95
MiFare Classic NFC Card 2.50 10 25.00
Lithium Ion Battery 9.95 1 9.95
Slider Potentiometer 6.00 1 6.00
Total 149.60
36
Questions?
top related