seminar presentation on Walk ‘n’ charge. In this, we are generating electrical energy as non-conventional method by simply walking on the footstep.

1. WALK ‘N’ CHARGE
ARPIT
16284

2. CONTENT
 Introduction
 How it works?
 Advantages
 Conclusion
 Reference

3. Introduction
 Walk –n-charge is one of the technologies used to charge the low power
operated devices like mobile phone batteries , MP3 player batteries , etc
while you walk.
 Two technologies have been tested so far to convert energy used in
walking into electrical power.
 1: Uses of piezoelectric material.
 2: Placing small electro-mechanical devices , such as a dynamo

4. Mechanism
 Conversion of mechanical to electrical energy
 Storing the electrical energy
 Using this energy to charge mobile phone
MECHANICAL TO
ELETRICAL ENERGY
STORING THE
ELECTRICAL
ENERGY
USING THIS
ENERGY TO
CHARGE YOUR
DEVICE

5. Using piezoelectric material.
 Piezoelectric materials are materials that produce an electric current
when they are placed under mechanical stress.

7. How its work?
 The pushing power is converted into electricity
 we can take advantage of this special property by putting piezo elements
underneath our feet in such a way that every time we take a step, we are
using our weight to push on the piezo electric elements- which then in
turn convert that energy into electricity.
 The only issue with this, however is that we need DC, not AC in order to
power our stuff. We can solve this problem by creating a bridge rectifier
with diodes to convert the AC power to DC power we can use.

9. STEP 1:MEASURING YOUR SHOE AND
PRINTING THE FILES

10. STEP 2: GLUING THE PIEZO
ELEMENTS

11. STEP 3: THE BRIDGE RECTIFIER

12. STEP 4: INSTALLATION AND
FINISHING TOUCHES

13. STEP 5: EXERCISE!

14. Other application of piezoelectric
material

15. Placing small electro-mechanical
devices , such as a dynamo
 Dynamos convert mechanical rotation into electric power.
 Dynamo - a device that makes direct current electric power using
electromagnetism.

16. How it works?
 This device has to be worn below the knee cap on one leg and a light
string is attached to the other leg.
 This device captures the energy by connecting an electrical generator to
leg movements.
 When the person extends the gap between the legs, power is generated
by a gear that turns and spins the generator.
 The flexion of the leg turns off the gear so as not to discomfort the
person.

18. Storing the electrical energy:
 Since the electricity produced is bi-directional and contains spikes, an
electronic circuit encompassing a rectifier and a filter converts it into a
unidirectional, spike-free wave and stores the energy produced in
rechargeable batteries. This stored energy is used as an input supply to
mobiles

19. ADVANTAGES and FUTURE
PROSPECTIVES:
 Increasing the effectiveness of mobiles in rural India by providing a portable
means of charging of mobiles, torches, radios.
 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.
 India has signed the Kyoto Protocol ? an acknowledgement 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.
 Charging your cell phone might soon be as simple as taking a walk around
the block.

20. Conclusion
 Even if 0.1% of the Indian population uses this device, it can to help reduce
carbon emission by 2.25 tones per day.
 This is a Non-conventional system
 Smart system
 Eco friendly
 More cheaper than solar system

21. Reference
 https://circuitdigest.com
 http://www.123seminarsonly.com
 https://www.wikipedia.org/
 https://www.slideshare.net