1. V.SATHISH
VELAMMAL INSTITUTE OF TECHNOLOGY
CHENNAI

2. INTRODUCTION
 Energy harvesting sources including
solar, wind and thermal each with a different
optimal size. They either waste much available
energy due to impedance mismatch, or they
require active digital control that incurs
overhead, or they work with only one specific
type of source. No more research on the
vibration domain

3. PROPOSED SYSTEM
 This paper has investigated the optimal power that can be
extracted from ROAD SPEED BRAKER over a wide
speed range using electromechanical vibration conversion
from human movement. Driven by the potential to power
small portable electronic devices, more recent research in
energy harvesting from ROAD SPEED BRAKER has
focused on
1) increasing the power output
2) energy harvesting from the motion of vehicles.

4. BLOCK DIAGRAM
Accelerometer
Accelerometer
a
Vibration
Source
Accelerometer
DC-DC
Booster
Super
capacitor
Piezo plate
ATMEL AT89S52
ADC
LCD
AC Loadoad
Relay
Inverter (DCAC)
Storage
Devicee

9. OPERATION

10. EXPLAINATION
 mechanical stability of the piezoelectric transducer
under large mechanical stress
 Piezoelectric transducer plate is kept at the bottom of
the speed breaker, so when the vehicle passes through
speed breaker on the spot it compresses and produces
pressure which is then used to produce electricity.

11. APPLICATIONS
 Long lasting operability
 No chemical disposal
 Cost saving
 Maintenance free
 No charging points
 Inaccessible sites operability
 Flexibility
 Applications otherwise impossible

12. THANKYOU