Waterproof Cellular Phone Design

Berhane Azage

Jin Yoon

Trey Whiteman

Joshua Salazar

Sarah Ohr

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.

Objective Tree

Durability

TemperatureLiquid Variant

Depth Sensitive

Waterproof

Aesthetics

Features Low Weight

Appeals to Customers

WaterproofingTechnology

Cost Effective

WATERPROOF CELL PHONES

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

Challenges and Design Constraints

• waterproof each component

• ensure high durability and waterproof capability.

• Cost-effective

• Aesthetics: compact and stylish

Morph ChartFunction 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

Product Differentiation

Waterproofing Individual

Components

vs.

The Outer Casing

• Competition• Defining our Market

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

Metrics

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

Depth Pressure Differences

Design Description I

Motherboard

Battery Case & Connector

Speaker & Microphone

Network Technology

• CMDA vs. GSM

• CMDA: Do not need to worry about sim card

Design Description II

• Screen

• Antenna

• Encasing/Cell Phone Body

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

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 customersContract with cell phone providers

- Release of Product October 10, 2006- Monitoring and Customer Support Ongoing

THANK YOU