Download pptx - EPICS - GLASS HEARD Design Review 1 (Fall 2014) [Final]-2 [Autosaved]

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

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Our Goal


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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


PECS: Picture Exchange Communication System

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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


PECS: Picture Exchange Communication System

PROTOTYPE DEMO

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Our Demo/Prototype

Design Review ~ Fall 2014 EPICS ~ GLASS ~ HEARD

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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

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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

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SEMESTER PROGRESS

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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



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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


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FINAL PROTOTYPE DESIGN SKETCH CHANGE

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FINAL DESIGN

1. Display2. Velcro pushbutton panel3. On/Off button4. Serial port5. Charging port6. Volume Increase7. Volume decrease

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Hardware Diagram


Raspberry Pi

RFID card

Battery

Buttons

RFID reader

Micro SD

Display

Microphone

Speaker

Switch

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System Controller — Raspberry Pi


• 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

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Hardware Diagram


Raspberry Pi

RFID readerDisplay

Speaker & Microphone

UARTI2C

I2S

ADC

SPI

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Hardware Components

• Raspberry Pi

• Microphone

• Speaker

• Push Button

• Battery

• RFID reader

• RFID Cards

• SD cards

• Display



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• Adafruit PN532 Breakout Board

• Adafruit SSD1306 I2C Display

• MCP3008 Analog-Digital Converter

• MiFare RFID/NFC Cards

• Push Button

• Slider Potentiometer

Hardware Components


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• WiringPi

• libNFC

• ArduiPi_SSD1306 Driver

Software Libraries


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CODE SNIPPETS – DISPLAY


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CODE SNIPPETS – RFID SETUP


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CODE SNIPPETS – RFID POLL


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CODE SNIPPETS – AUDIO PLAYBACK

NFC Card UID – 32-bitFile Name – Hexadecimal Value of UID


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CODE SNIPPETS – APPLICATION ROUTINE

• Check Card• Scan Buttons


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PROTOTYPE DEVELOPMENT


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USER OBSERVATION


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NEXT SEMESTER

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Goals for Next Semester

• CAD model

• 3D Shell

• Activities for Clients



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USER MANUAL AND QUICK START GUIDE


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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


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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

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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

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Questions?