3. Objective
● To ensure that our cell phones never run out of juice by letting us charge
it while we are on our daily walk
4. Introduction
● Walk n Charge is one of the latest technologies used to charge the low power device like Mobile
batteries, MP3 player Batteries, Power Bank etc.
● Two technologies are used to convert energy used in Walking into Electrical Power
○ By Using Piezoelectric material.
○ il. By Using small Electro Mechanical Devices (Dynamo).
5.
6. Mechanism
● The mechanism involves three basic stages
● Conversion of mechanical to electrical energy Storing the
electrical energy
● Using this energy to charge mobile phone
MECHANICAL TO
ELETRICAL
ENERGY
STORING THE
ELECTRICAL
USING THIS ENERGY TO
CHARGE YOUR DEVICE
7. Working
● Work n Charge is worn below the knee cap on one leg and a light string is attached
to the other leg. The strides taken help in pulling and retracting the string, which is
further attached to a dynamo that generates about 3.5 Watts; enough to charge
low-powered devices like mobiles, MP3 players, GPS devices, etc.
● Walk-N-Charge is about converting a part of the bio-mechanical energy spent in
our day-to-day lives(while walking) into a usable form and storing it to charge low-
power battery-operateddevices.
● Walking involves a change in relative displacement of around 35 cm between legs.
This repeated linear motion could be converted to rotary motion with the help of a
pulley and string. Thus, the bio-mechanical work is converted into mechanical form
and eventually stored as chemical energy in batteries to store electric energy
8. Arrangement
● The device is clamped on one leg using a Velcro strap and a hole lets out a Nylon
string that is attached to the other leg that helps in the conversion of the
displacement into rotary motion.
● Each Walk-n-Charge Is Capable Of Generating Minimum 3.5 Watts Of Power At
Normal Walking Speed (4 Km/H).
● An Intermittent Walk Of 20 Minutes Is Sufficient To Charge A Mobile With Around
1 Hour Talk Time, Which Can Be Considered As An Average Person's Phone Usage
For A Day.
● For A Person With An Average Walking Of Half An Hour Per Day, This Device Can
Generate 2 W / H Of Energy.
11. Applications
● Increasing the effectiveness of mobiles in rural India by providing a
portable means of charging mobiles, torches, radios, etc.
● Helping military personnel charge their GPS devices and other low-
power electronic gadgets while on the move.
● Providing an alternate means to wall-based charging for MP3 players,
mobiles, etc. in cities, thereby, helping
● today's fast generation to move faster without mobile battery
problems.
● Charging your cell phone might soon be as simple as taking a walk
around the block.
12. FUTURE PROSPECTIVES
● India has signed the Kyoto Protocol - an acknowledgment that we share
the concern of global warming, which also expresses our commitment to
slow down climate change. Walk-N-Charge would just add to the efforts
put in by India in various innovative ways.
● This technique of charging helps us to use the renewable energy from
human movement.
● We can consume electricity without worrying about power shutdown.
13. CONCLUSION
Hence, walk-n-charge is the best idea for battery charging. Even if
0.1% of the Indian population uses this device, it can generate 1500
kW / h of energy and can help reduce carbon emission by 2.25 tonnes
per day. Thus, Walk-N-Charge promises you a source of energy that is
not only clean, portable and inexpensive, but also charges your mobile
while you get charged up!
