YOUNG ENGINEERS PROGRAMME
ABUJA –NIGERIA 2-7 NOVEMBER 2014

‘‘HARNESSING ENERGY WITHIN
THE DEVICE”

GEORGE OUMA OTIENO
BSC IN ELECTRICAL AND INFORMATION ENGINEERING
FIFTH YEAR
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The Auto-run Cellphone is a project that addresses the issue of quick battery
discharge in smartphones due to the many applications that run. The project solves this generating electrical energy for charging while mobile is being used.
This is achieved by a pretty small wireless device that is mounted at the back of
the phone to act as a charger. It uses energy from the radiation caused by the
Radiofrequency from the Base Transceiver Station (BTS) while communication is taking place. The device does the conversion and regulation of the Voltage and
Current to achieve mobile charging specifications.
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• Scope
• Methodology
• Discussion
• Technology
• World Population
• Energy
• The General Picture
• Communication Process
• Mobile Site
• The Idea
• The Process
• First Prototype
• Beneficiaries
• Advantages
• Challenges
• Cost Benefit Analysis
• Conclusion
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• Energy Consumption for charging mobile phones in Africa
• Alternative and sustainable mobile phone charging for reduced energy consumption
• Generating 2W-5W range of electrical power for charging
• Prototype and its operation
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• Detection of the radio frequency waves
• Converting the radio frequency to electrical energy using the device monopole antenna
• Stabilization or regulation to universal standard of 4-6V, 100mA-1000mA
• Connection to charging system
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• Living in the age of: -
• Cellphones
• Tablet
• Hand-held devices
• Computers
• Wireless Devices
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• 7.125billion people in the world in 2013 (Source: World Bank)
• Population Growth Rate projected to be 1.2% annually
• Africa’s Population is 2 nd largest in the World after Asia.
• Africa has 15% of the world’s population, approximately 1.068billion people
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• Technology requires energy to drive it.
• Main source of energy in Africa is Electrical Energy.
• Other sources of power – solar, wind – currently expensive and out of reach of most.
• Power Generation in Africa mainly Hydro and Geothermal
• Global warming has affected weather patterns which has affected power generation
• This leads to inadequate power generation therefore most countries in Africa experience, Black Outs, Power Rationing, etc
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• Assuming 70% of Africa’s Population each has a mobile device
• 70% of 1.068billion = 0.75billion people
• Maximum Power required to charge a mobile phone is approximately 5W
• Therefore, total power required for charging is: -
• 0.75billion * 5W = 3.75GW
• Demand is too HIGH!
• Alternative means of charging phones needs to be found.
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 Electrical energy is a precious commodity that needs to be
CONSERVED at all costs.
 Alternative, Sustainable and Affordable means of charging cell phones in Africa must be found.
 HARNESSING radiofrequency waves; CONVERT to electrical energy; REGULATING the energy; CHARGING of cellphone.
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 The principle behind this invention is based on harnessing the radiated electromagnetic waves from the cellphone antenna
 Formation of magnetic field around the antenna will lead to generation of electrical energy
 The electrical energy generated is the power that charges your cell phone
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 Not all radio frequency waves are to be converted, just about 70% of it.
 The charging takes place when you: -
• receive a call
• make a call
• send a text and
• while browsing
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AUTO-RUN CELLPHONE
Detection of Radio
Frequency
Conversion &
Regulation
Charging
(connection to charging system)
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ITEM
1 st Prototype
VOLTAGE, V
4
CURRENT, mA
225
POWER, W
0.9
REMARKS
Insufficient
2 nd Prototype 5 400 2 Sufficient
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 Mobile Phone Users.
 Hand Held Computers.
 Any wireless communication device
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 No charger required.
 Gives your phone energy especially when you need.
 Your phone can run for a good number of days without ac plug in.
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 Some mobile phones are not compatible with this system.( more research)
 Efficiency reduction in some mobile phone devices.
 Causes overheating in other phone devices ( Motorola, Huawei)
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ITEM DESCRIPTION QTY UNIT
COST
(KSHS)
1 Hardware Design
2 Hardware Fabrication
3 Scaling of Prototype
1
1
1
Lot
Lot
Lot
TOTAL COST
Assuming $1 = KSHS. 87.00, Total Cost
1,000.00
800.00
500.00
AMOUNT
1,000.00
800.00
500.00
2,300.00
$26.00
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• Cost of Energy Generation and Consumption in Africa is high.
• With Alternative, Affordable and Sustainable means of charging cellphones, the energy can be diverted to other uses.
• The Auto-run Cellphone invention will ensure energy is sustained, conserved and is affordable to most.
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AUTO-RUN CELLPHONE
Email: georgeouma07@gmail.com
Mobile: +254713062731
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