Copy Of Wireless Energy Transfer_pp_draft3_2007a

Wireless Energy Transfer Team Cheetah Igal Mohamed, Mike Sweeney, Nguyen Than

Project Overview • Sponsored by EECS Department • Prove that wireless energy transfer is possible • Power a light bulb wirelessly by magnetic induction I

Team Cheetah Small size of the group Each member involved in every section of the project

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Presentation Outline • Marketing • Quality • Engineering • Manufacturing

Marketing The Wireless Energy System

Marketing analysis •Portable mobile devices need charging. •People are tired of dying batteries •Current wireless •charging is only possible within inches from a transmitter

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Marketing Features: Wireless technology will expand current electronics market • Wireless • Convenient • Portable

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Wireless Energy System Specifications Safety Affordable Cost Long Lasting Operation Long Distance Transfer Extended life Accessibility

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Operates at 10Mhz $ 35-50 1-2 Hours between charges Full efficiently at one meter 3-5 years Available at common electronic stores.

Market Competition • WildCharger & Visteon • $50-100 • Charging Multiple Device • Must have contact on pad

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Quality Engineering Wireless Energy System

Quality Testing • Conformance to requirements • Tests to verify Performance – Temperature – Impact – Humid

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Temperature Testing Procedure: • Determine if temperature affects the power transfer •

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Same procedure will be implemented for hot and cold temperatures

Humidity Testing Procedure: How much humidity can the system be exposed to Without inhibiting losses in energy transfer ? N

Impact Testing Procedure: • The impact test will check the case that surrounds the wireless transmitter for defects.

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Wireless System Quality Testing

• The transmitter and the receiver will be tested separately Testing Equipment Ref

Heater

Temp Test

R

R

Humid Test

R

R

Impact Test

Hum

Therm

Hygro

R

R

Mult

Mstic

Tank

R

R

R

R

R

R

Ref = Refrigerator; Hum = humidifier; Therm = thermometer; Hygro= Hygrometer; Mult = Digital Multimeter; Mstic = Meter Stick

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Reliability • Guarantee of system to perform for the specified time • To predict the rate of failure of the system • Using the (MIL-HDBK-217F). I

Failure Rate calculation

Total rate failure is:

λ = λ1 +λ2 where λ1 = sum( NP * λp) λp = failure rate of individual component Np

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=

number of components

Failure Rate Calculation Table 1 Components Resistors (~20) Inductors Transistors

Table 2 Rate of failure per 10^6 hours 0.0043 0.008

Sub-system

rate of failure per 10^6 hours

Transmitter

1.5

Receiver

1.5

~

0.0023

Capacitors

0.0039

Diodes

0.0069

~

The rate in which the wireless energy device will fail is 3 times every million hours of use or 1 failure per 500,000 hours of use. N

Certification Required • FCC Regulation • Is it safe when exposed to magnetic field?

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Engineering Wireless Energy System

Engineering Specifications and Principles Transmitter Input Voltage

Copper Coil 120 V (AC), 60 Hz

Transmission signal

10 MHz

Receiver Output

Copper coil 1 watt

• Magnetic Induction • Short distance magnetic resonances I,N

Wireless Energy Charger System

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AC to DC converter • This converter will convert the 120 V AC from the power outlet to a 9 V DC voltage across the input of the frequency oscillator.

Rectifier circuit composed a diodes and a capacitor. M

Frequency oscillator • Input voltage is 9 V D.C • Outputs A.C current at the desired frequency. • Creates an electromagnetic energy.

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Principle of Primary Coil

• Projecting Magnetic Field Magnetic Vector Equation

dB = udH

Principle of Receiving Coil The Changing in Flux creates an induced emf Induced Voltage

Vemf

d = − N ∫ B • ds dt

Safety Two Classes of Radiation

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Safety Ionizing radiation

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( > 10^15 Hz )

–

Can cause current in the body

–

Can cause ionization of molecules

– –

Can alter DNA

Safety • Non-ionizing radiations (< 10^15 Hz). – Does NOT cause ionization – Confined in the upper layer of skin – Cause minor heating sensations on the skin level M

Prototype BOM Bill of Materials (BOM): Prototype Cost/Un Total Component Provider Quantity it Cost Resistor Mouser Inc. 10 $0.05 $0.50 Capacitor Mouser Inc. 10 $0.07 0.70 BJT Mouser Inc. 6 $0.25 1.50 Diodes Mouser Inc. 4 $.025 1 ACE 1 Watt Bulb hardware 1 $1.70 2 Wall Outlet Pins Mouser Inc. 1 $0.10 0.10 ACE Coils hardware 2 $2.00 4.00 Breadboard Mouser Inc. 2 $2.00 4.00 Chassis Radio Shack 2 $1.50 3.00 Total

$ 17.00 I

Engineering Budget

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Engineering Budget

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Engineering Budget

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Project Schedule

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Manufacturing Wireless Energy System

Market Testing • Beta version will be created and tested for high level production. • 10,000 assembled for market testing.

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Process of Mass Production • Plexus Corp manufacture units for $5 per board plus the cost of components $7 • perform the quality testing of the final product for $1 each

Income Statement Year Ending December 2008 Revenue ………………………………………………………………………..$ 2,000,000 Cost of goods sold…………………...………………………………………... 500,000 Gross Profit……….. ……………………………………………………… 1,434,925 Expenses: Advertising …………………..……….……………………. …………… $ 5,200 Insurance …………………….……...………………………………….. 6,000 Legal & Professional Services…….……..……………….... ………………5,300 Utilities ………………….…………….……………...……………………..3,600 License………………………...………………………..………………….. 2,200 Bank & Credit Card Fees ……..……………………………………………... 675 Bookkeeping………………………………………………...……………….. 600 Engineering budget…..………………….………………………………....41,500 Manufacturing………..….….………………………….…………………500,000 . Total Expenses……………………...………………………………….$ 565,075 State Tax (8.8%) ...........……………………...………………………..……$ 176,000 Net Income ………..……………………………….…………………………$ 1,258,925

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Individual Unit Cost High production Manufacturing BOM ** eng Labor (Plexus Corp) Label user manual Testing Package Shipping Total M,I

Cost/Unit $7.00 $5.00 $0.50 $0.75 $1.00 $1.25 $1.50 $17.00

Production procedure Plexus Corp

Part Import

Sponsor Financial Department

Verify Materials

Team Cheetah

Part Assembly

Production Hospital

Testing Phase

Customer Feedback

Verify Function

Warranty

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Environmental Testing

Packing and Shipping

FCC Corporation

Conclusion –Safe to use –Convenient –Low cost

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Thank you John Yates Scott Campbell Pat Pedro John Schneider Partha Pande