Post on 14-Apr-2017
POWER GENERATION USING
PIEZOELECTRIC TRANSDUCERS IN
FOOTSTEPS
Project Members:
MELWIN DMELLO 4AL13ME418
SANJAY G S 4AL13ME420
SUSHMA 4AL13ME427
VINOD KUMAR 4AL13ME435
Project Guide :
Asst. Prof. ARUN KUMAR D T
MECHANICAL ENGINEERING
AIET, MIJAR
1. Introduction
2. Piezoelectric transducer
3. working
4. Applications
5. Advantages
6. Disadvantages
7. Estimated cost
contents
Introduction
Now a days, electricity has become a need of every single human, demand of electricity increasing day by day.
This new generation needs lots of electrical power for their different operations. There are various ways to generate electricity.
The use of piezo-electric crystal is to produce the electric output from surrounding vibrations.
These materials have the ability to absorb mechanical energy from their surroundings.
usually ambient vibration and transform it into electrical energy that can be used to power other devices.
Piezoelectric transducer
The piezoelectric material converts the pressure applied to it into electrical energy.
The source of pressure can be either from the weight of the moving vehicles or from the weight of the people walking over it.
The output of the piezoelectric material is not a steady one. So a bridge circuit is used to convert this variable voltage into a linear one.
Again an AC ripple filter is used to filter out any further fluctuations in the output.
The output dc voltage is then stored in a rechargeable battery.
Working
Working of piezo electric sensor
In a survey Israel is putting PEG 6cmunder the road level and at a distance of 30cm apart. From this trial, it has been seen that a vehicle weighing at around 5 tons can generate 2000V, and a 1Km cluster of such generator can generate 400Kwh energy. If 600vehicles are allowed to go through this road for an hour, it can power up to 600-800 homes
Applications
Roads, highways and railways
This is the important place which is responsible for generation of large energy as the huge amount of pressure is exerted by crowd on the footpaths. The embedded piezoelectric crystals at the footpaths & steps where people make contact with the footpath and these materials get excessive pressure and force, because of this greater amount of energy is stored.
Power Generating in foot steps
Platforms / Footpath is most
common place on where we embed
the piezoelectric tiles to produce
the small amount of energy by
utilizing the human footstep over it.
The produced charge is stored in
battery and then that stored charge
can be use for charging low power
electronic devices.
Power Generating from Platforms
It is eco friendly and produce no pollution to environment.
Light weight and is easy to operate.
Manufacturing cost is less and hence it proves to be economical.
Piezoelectric transducers can be obtained in larger sizes.
Advantages
Since the transducer material is delicate, it needs to be handled carefully.
As the voltage produced is less, additional equipments are needed for the working.
Disadvantages
PARTICULARS TOTAL COST
• Piezoelectric transducer,
• Fabrications materials,
• Inverter
• Electronic circuits,
• Battery charging unit
• Wires and attachments
• DC battery,
• Transportation cost
45000 - 50000
Estimated cost