Waterproof Cellular Phone Design

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Waterproof Cellular Phone Design

• Berhane Azage
• Jin Yoon
• Trey Whiteman
• Joshua Salazar
• Sarah Ohr

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Introduction

• Background on Cell Phones
• Market Assessment
• Why Waterproofing?
• The gist of the problem definition
• Design a competitive waterproofed cell phone that
  is cost effective.

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Objective Tree
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Analysis of the Problem

• Existing products Casio G'zOne TYPE-R, Can U
  5025
• Main Features
• water-proof, shock resistant, a 1.3MP digital
  camera, and electronic compass
• Strengths
• High Water-Proof Capability, High Durability
• Weaknesses
• Its chunky appearance, cost

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Challenges and Design Constraints

• waterproof each component
• ensure high durability and waterproof capability.
  
• Cost-effective
• Aesthetics compact and stylish

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Morph Chart
Function Possible Means
Type of Phone Flip Slide Bar -- --
Antenna Internal External Both -- --
User Interface Standard Touch screen Qwerty -- --
Waterproofing Outer Casing Individual Components -- -- --
Screen Color Black/White -- -- --
Casing Metallic Plastic -- -- --
Digital Transmission CDMA GSM -- -- --
Battery Removable Non-removable Nickel Cadmium Lithium Polymer Lithium Ion
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Product Differentiation

• Waterproofing Individual Components
• vs.
• The Outer Casing
• Competition
• Defining our Market

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Waterproofing Techniques

• Battery
• Removable
• Non-removable
• Speaker
• Polypropylene
• Mylar
• PlastiDip
• Microphone
• PlastiDip
• Parylene

• Main Board
• Parylene
• Epoxy
• Touch Screen
• Screen
• Epoxy
• Parylene
• Antenna
• Internal
• External

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Metrics

• Cost
• Temperature Tolerance
• Call quality / sound quality
• Aesthetics
• Moisture Transmission
• Pressure
• Depth
• Pressure Differences

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Design Description I
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Motherboard
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Battery Case Connector
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Speaker Microphone
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Network Technology

• CMDA vs. GSM
• CMDA Do not need to worry about sim card

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Design Description II

• Screen
• Antenna
• Encasing/Cell Phone Body

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Approximate Cost of Design
Waterproofed items Approximate Cost to Waterproof (per phone)
Main board 20
Antenna 0
Speaker 1
Microphone 1
Battery Case .50-1.00
Camera 0
Touch Screen (software/hardware) 1
Charger software/hardware 1
Testing 5
Labor Cost of Manufacturing 3
TOTAL 33 base phone
this is an overestimate of the cost
waterproofing components such as the microphone
and speaker may cost a little less
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Schedule testing, shipment, and marketing

• - Completion of Design
  March 8, 2006
• - Final Documentation
  March 20,2006
• - Presentation to Class
  March 25,2006
• - Building Prototype of cell phone
  April 20,2006
• Ordering of parts, Assembling, Determining ways
  to testing)
• - Testing I
  April 30,2006
• Pressure levels, Temperature variation, Signal
  strength, etc.
• - Revision of Design
  May 5, 2006
• Developing alternatives if needed
• Re-analysis of Budgeting
• - Specification for Fabrication and Production
  May 12, 2006
• - Sample Manufacturing
  June 15, 2006
• (Note length of time is due to outsourcing to
  China and India)
• - Evaluation
  July 25, 2006
• Focus groups (survey customer satisfaction)
• - Solutions to customer requests
  July 30, 2006
• - Marketing
  August 9, 2006
• Research potential customers
• Contract with cell phone providers

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• THANK YOU