This document describes a project to generate electricity from speed breakers. It discusses three mechanisms - roller, rack and pinion, and crankshaft - that can convert the kinetic energy of vehicles passing over speed bumps into rotational motion. Graphs show the relationship between voltage generated, vehicle speed and weight. Advantages include using wasted energy and providing power for street lights. Challenges are low outputs and maintenance needs. Future work could aim for heavier vehicles and more efficient designs to increase power generation for rural electrification.

1. JAWAHARLAL NEHRU NATIONAL COLLEGE OF ENGINEERING ,SHIMOGA
DEPARTMENT OF MECHANICAL ENGINEERING
PRESENTED BY:
MALTESH
4JN10ME051
GUIDED BY:
Mr. C. D. ASHOK KUMAR
ASSOCIATE PROF
M. Tech

2.  INTRODUCTION
 DIFFERENT MECHANISMS INVOLVED
 ROLLER MECHANISM
 RACK AND PINION MECHANISM
 CRANK SHAFT MECHANISM
 ADVANTAGES
 LIMITATIONS
 FUTURE SCOPE
 CONCLUSION
 REFERENCES

3. INTRODUCTION
A large amount of electrical energy is wasted in speed breaker through friction,
every time when vehicle passes over it.
So electricity can be generate using vehicle weight (potential energy) as an input.
So this small step to improve this situation.
Very new and innovative concept
Non –Conventional Energy Source.
This Makes Use Of WASTE OF ENERGY TO generate ELECTRICAL
ENERGY.

4. DIFFERENT MECHANISMS INVOLVED
There are three basic mechanisms involved in power generation
using speed breakers
Roller mechanism
Rack and pinion mechanism
Crank shaft mechanism

5. ROLLER MECHANISM
Here roller ,sprocket-chain arrangement is used.
 Ratio of speed of roller to dynamo shaft is 1:5
Whenever a vehicle passes over this hump the roller fitted in between a
speed breaker and some kind of a grip provided on the speed breaker
rotates.
This in turn rotates the shaft of D.C generator and hence produce
electricity.

6. Cont ...

8. These are the few disadvantages of roller mechanism
Extensive maintenance required.
Might cause collision, eg. a car comes at 100kmph and passes
over this hump due to which the hump gains a speed of 90kmph,at
the same time if a bicycle at 20kmph passes over the hump it cause
collision.
Their efficiency is less compared to other mechanisms.

9. RACK AND PINION MECHANISM
Here the reciprocating motion of the speed-breaker is converted into
rotary motion using the rack and pinion arrangement .
The axis of the pinion is coupled with the sprocket arrangement .
The axis of the smaller sprocket is coupled to a gear arrangement.
Finally the gear arrangement with free wheel is coupled with the
generator .
freewheel

10. CONT...

11. SPEED in km/hr Voltage generated in V
10 7.93
20 6.28
30 5.03
40 4.66
50 3.03
LOAD in kg Voltage generated in V
60 8.33
130 9.45
170 10.22
200 11.23
270 11.81
Speed v/s voltage (vehicle weight 150 kg)
Load v/s voltage (vehicle speed 10km/hr)

13. CRANK SHAFT MECHANISM
 Whenever the vehicle goes on the speed breaker , the speed breaker goes
downward.
So the potential energy is converted into kinetic energy.
Here whenever the vehicle passes over the hump,the hump goes down.

14. This cranks the flywheel present below which has low inertia and it rotates at high
speeds.
This in turn drives the alternator which generate the electricity.
ANIMATION OF
CRANK SHAFT
MECHANISM

15. HOW MUCH POWER CAN BE GENERATED ??
“A vehicle weighing 1,000 kg going up a height
of 10 cm on such a rumble strip produces
approximately 0.0098 kilowatt power. So one
such speed-breaker on a busy highway, where
about 100 vehicles pass every minute, about one
kilo watt of electricity can be produced every
single minute. The figure will be huge at the end
of the day,”

16.  Simple construction, mature technology, and easy maintenance.
 No manual work necessary during generation.
 Energy available all year round.
 No fuel transportation problem.
 No consumption of any fossil fuel which is non-renewable source of energy.
 Pollution free power generation.
 India is a very vast country and has a broad network of highways, the rural
areas beside the highways can be supplied with the street lightning
electricity.

17.  It gives low electrical output.
 Initial cost of implementation is high.
 Regular maintenance is necessary.
 Achievement of proper balance between speed and torque
is difficult
 The springs used gets worn frequently and hence need to
be regularly replaced .

18. FUTURE SCOPE
Such speed breakers can be designed for heavy vehicles, thus
increasing input torque and ultimately output of generator.
More suitable and compact mechanisms to enhance efficiency.
A survey on the energy consumption in India had published a
pathetic report that 85,000 villages in India do not still have
electricity. Supply of power in most of the country is poor. Hence
more research and development of technologies are needed in this
field. This energy can be used for the lights on the either sides of
the roads and thus power that is consumed by these lights can be
utilized to send power to these villages.
It may also be used for light vehicle also.

19.  The existing source of energy such as coal, oil etc may
not be adequate to meet the ever increasing energy
demands. These conventional sources of energy are
also depleting and may be exhausted.
 These are some non-conventional methods of
producing energy. This project is a one step to path of
exploring the possibilities of energy from several non-
conventional energy sources.

20. REFERENCES
A Novel Speed-Breaker for Electrical Energy Generation Suitable for
Elimination of Remote Parts of Power Systems where is Near to Roads -
ISSN 2090-4304 Journal of Basic and Applied Scientific Research
www.textroad.com
Power Generation Using Speed Breaker with Auto Street Light
International Journal of Engineering Science and Innovative Technology
(IJESIT) Volume 2, Issue 2, March 2013, ISSN: 2319-5967
PRODUCE ELECTRICITY BY THE USE OF SPEED BREAKERS by Shakun
Srivastava , Ankit asthana- Journal of Engineering Research and Studies,
E-ISSN 0976-7916