P07002Design Review 2 Documents 1
Senior Design 1
P07002
Design Review 2
Date: Friday, November 3, 2006
Time: 9AM – 10AM
Location: 09/2271
P07002 – Two Way Communication Device
Design Review 2
Table of Contents
TopicPage Number
Design Review 2 Itinerary3
Project Introduction4
Concept Overview – Keyboard5
Concept Overview – LCD6
Concept Overview – Power Supply7
Concept Overview – SBC PCM93718
Concept Overview – Program Screenshot9
Potential Failure Modes10
Bill of Materials11
Current State of Design Specs12
Needs Assessment for Reference13
P07002 – Two Way Communication Device
Design Review 2
Design Review 2 Itinerary
Project Introduction/Background - Matt5 minutes
Introduction of team members/disciplines
Background on two-way communication device
Overview and updates of concept design
Software development - Zemma15 minutes
Overview of current state
Actions taken to mitigate risks
Demonstration of feasibility
SBC Selection- Aisosa5 minutes
Memory and storage selection
Heat Dissipation - Scott10 minutes
Overview of heat experiment
Results of heat experiment
Proposed path of heat flow
Proposed solution for heat dissipation
Bill of Materials - Glenn5 minutes
Summary of budget status
Long lead items
Wrap-up (Matt)20 Minutes
Design specifications complete to date
Review of Senior Design II Schedule*
Additional discussion and comments from panel**
*Microsoft Project document to be handed out at review
**This will include a brief discussion concerning the case design of the device
P07002 – Two Way Communication Device
Design Review 2
Project Introduction
Team members:
Matthew Tice – EE – Team Lead
Scott Keller – ME – Heat Dissipation/Case/Durability Subsystem Lead
Nathan Holland – ME – Benchmarking/Data collection Subsystem Lead
Zemma Kassa – EE – Software Development Subsystem Lead
Aisosa Ayela-Uwangue – EE – Components Subsystem Lead
Glenn Snyder – EE – User Interface Subsystem Lead
Project Background:
In the past, faculty and tutors have found that they are having difficulty communicating with hard-of-hearing and deaf students. The only method in which the student can communicate with the professor or tutor is by means of paper and pencil. This method of communication is very slow and tedious and can at times be frustrating to both individuals. The goal of this project is to design a device that will allow users to communicate rapidly and easily with minimal training. Professors and tutors will be able to effectively help students in an efficient manner.
The team started the project by defining the goal of the project and creating a needs assessment. This was accomplished by interviewing several stakeholders including professors, deaf students and hard-of-hearing students. The team then determined the specifications that the design must meet. Brainstorming sessions along with QFD analysis led to concept generation. A solution prioritization matrix was then used to filter several concept ideas down to a final device concept. A meeting was held to discuss risks involved in the implementation of the design that was selected. These risks have been broken down and steps have been taken to mitigate each risk.
This review will cover the overall design of the device in the areas of software development, single board computer selection, heat dissipation, casing design and project budget. Team members will discuss the risks that have been identified and the steps that have been taken to mitigate each risk in order to ensure smooth implementation of the final design.
P07002 – Two Way Communication Device
Design Review 2
Concept Overview - Keyboard
P07002 – Two Way Communication Device
Design Review 2
Concept Overview - LCD
LCD Power Consumption
P07002 – Two Way Communication Device
Design Review 2
Concept Overview – Power Supply
150 W ATX Power Supply Specs
P07002 – Two Way Communication Device
Design Review 2
Concept Overview – SBC PCM9371
P07002 – Two Way Communication Device
Design Review 2
Concept Overview – Program Screenshot
Above is a screenshot of the program running in the Qt Developer Environment. This screenshot shows the work completed on the program to date. Zemma will give a demonstration of the GUI later in the presentation.
P07002 – Two Way Communication Device
Design Review 2
Potential Failure Modes
P07002 – Two Way Communication Device
Design Review 2
Bill of Materials
The only anticipated long lead item is the LCD screen that has an estimated time of arrival of 12/10/2006.
The budget provides $228.00 for the case of the device. Conversations with the Brinkman Lab have resulted with a fabricated case at the price of the materials required. Future discussions need to occur before any agreement is finalized.
P07002 – Two Way Communication Device
Design Review 2
Current State of Design Specs
P07002 – Two Way Communication Device
Design Review 2
Needs Assessment for Reference
Need Topic /Need Number/Statement
Software / 1)Have an optional use for visually impaired users (larger font)2)Database that covers all disciplines in COE
3)Internet access
4)Means to update database/software
5)Have a way to provide graphical tools to users(graphs)
Team Capability / 6)Stay within budget
7)Design output must be within programming capability of team
Portability / 8)Portable for single user to carry
Display / 9)Screen size viewable by both student and teacher
10)Rotating capability
Manual / 11)Detailed user manual with troubleshooting and FAQ section
System Specifications / 12)Have RAM/processor speeds that are adequate for project
13)Storage space to accommodate database expansion
Durability / 14)Able to resist impact
15)Able to resist liquid spills
I/O / 16)Have capability to allow user to save session for later use
Maintenance / 17)Easy to clean in order to keep in orderly condition and sanitary
18)Include carrying case
Heat Control / 19)Dissipate heat in order to prevent over-heating
Security / 20)Have theft prevention capabilities
Power / 21)Have low power consumption
22)a low power mode
23)long battery life
User-Friendly / 24)Users must be able to be trained in a short time period
25)Menus must be easy to navigate through
26)Commonly used phrases and recently used history