The document discusses piezoelectric energy harvesting, which utilizes pressure points in the body to generate electricity through piezoelectric materials. It outlines the design process of a prototype, its applications for powering low-energy devices, and the advantages such as cost-effectiveness and portability. Future prospects include deploying the technology in high-traffic areas to generate energy from vibrations for public utilities.

1. Piezoelectric Energy Harvesting

2. CONTENTS
 INTRODUCTION
 BLOCK DIAGRAM
 PRODUCT DEVELOPMENT PROCESS
 APPLICATIONS
 ADVANTAGES
 FUTURE WORK
 RESULT ANALYSIS
 CONCLUSION
 REFERENCES
Fig: 1
Piezoelectric Energy Harvesting 1

3. INTRODUCTION
• There are different pressure points in our feet and whole body
pressure is exerted on these pressure points. So we can use the
principle of piezoelectricity to harvest energy from these pressure
points.
• Piezoelectric materials such as quartz which uses this concept are
those materials that have the ability to generate an electric
potential in response to mechanical stress given into material.
• The significance of the proposed approach results in efficient
generation of electricity which can power day-to-day utility devices.
Piezoelectric Energy Harvesting 2

4. FOOT PRINT
Fig. 2
Fig. 3
Piezoelectric Energy Harvesting 3

6. BLOCK DIAGRAM
• Conversion of pressure into electricity by applying pressure on
the piezoelectric crystals using feet.
• Rectification of generated AC voltage followed by filtering.
• Elevating this harvested energy to a certain required level
using voltage regulator and booster in order to meet the
minimum threshold power expectations for battery run
devices.
• Storage of rectified-regulated-boosted DC voltage.
Piezoelectric Energy Harvesting 4
Piezoelectric
Transducers
Rectifier
and Filter
Voltage
Regulator
Storage

7. CIRCUIT DIAGRAM
Fig: 4
Piezoelectric Energy Harvesting 5

8. PROCESS OF DESIGNING PROTOTYPE
• The process of designing the prototype was initiated with
literature survey and purchase of electronic components for
the model.
• Further, testing of each piezoelectric transducer in order to
make a proper estimate about the minimum and maximum
power that can be harvested.
• Connection of a bridge rectifier using diode 1N4007 to get a
net positive voltage.
Piezoelectric Energy Harvesting 6

9. ….CONTINUED
• Connection of a capacitor for further filtering.
• Further regulation of this voltage within 3-5 V , using voltage
regulator LM317 IC.
• Storage of the harvested energy in
batteries which is tied to the ankle
using Velcro.
Fig: 5
Piezoelectric Energy Harvesting 7

10. APPLICATIONS
• Piezoelectric power generation can provide a convenient
alternative to traditional power sources.
• Can be used to power low power electronics devices.
Piezoelectric Energy Harvesting 8
Fig: 6

11. ADVANTAGES
• Cost effective
• Portability
• Easy to handle
Date: 22nd Mar 2015 Piezoelectric Energy Harvesting

12. RESULT ANALYSIS
Date: 22nd Mar 2015 Piezoelectric Energy Harvesting
10

13. FUTURE WORK
• This technology can be used in heavily populated area where the
traffic is considerably high.
• The crystals may be installed in floors to harvest energy using
vibrations in order to power street lighting systems, public clocks
and other low power electronic devices.
Piezoelectric Energy Harvesting 11
Fig: 7

14. CONCLUSION
With further advancement in field of electronics, better
synthesized piezoelectric crystals and better selection of place of
installations can lead in generating more electricity for
semiconductor based devices and it can be viewed as a next
promising source.
Piezoelectric Energy Harvesting 12

15. REFERENCE
• [1] D. Han and V. Kaajakari, "Microstructured polymer for shoe power generation",
Transducers 2009, International Solid-State Sensors, Actuators and Microsystems Conference,
pp. 1393-1396 , Denver, CO, June 21-25, 2009.
• [2] K. Govind, A. Pahwa, N. Aggarwal and V. Balodhi, “Ecosecurity energy harvesting using
piezoelectric crystal“, Engineering and Systems (SCES), pp. 1-6, Allahabad, Uttar Pradesh,
March 16-18, 2012
• [3] H. Jaffe and D.A. Berlincourt, “Piezoelectric Transducer Materials”, Proceedings of the
IEEE, pp 1372-1386, Vol: 53, Issue: 10, October, 1965
• [4] J.G. Rocha, L.M. Goncalves, P.F. Rocha, M.P. Silva and S. Lanceros-Mendez,” Energy
Harvesting From Piezoelectric Materials Fully Integrated In Footwear”, Industrial Electronics,
IEEE transactions, pp 813-819, Vol: 57, Issue: 3, August 7, 2009
• [5] M. Jain, U. Tiwari and M. Gupta,”Mobile Charger via walk”, IMPACT 2011, Multimedia,
Signal Processing and Communication Technologies, pp. 149-152, Aligarh, Dec 17-19, 2011
Piezoelectric Energy Harvesting 13