+1 vote
We have batteries that get charged up when vehicles travel , or dynamo which lights up from stored energy accumulated from motion.

My question is , Whether it would be possible to generate electricity from roads that are engaged with high traffic and thereby the

electricity can be used up to lit the street lamps ?
Category Engineering Forum in Electrical
asked Jan 12, 2016 in Electrical by techdoubt | 98 views

1 Answer

+2 votes
Selected Ans.

There are various type of method of generating electricity from the kinetic energy posses by the running vehicles.

You can generate electricity from road by using piezoelectric material or by making a proper arrangement of gears,rack & pinion,flywheel etc.

  • While moving, the vehicles possess some kinetic energy and it is being wasted. 
  • This kinetic energy can be utilized to produce power by using a special arrangement called Power Hump. It is an Electro-Mechanical unit. 
  • All this mechanism can be housed under the dome, like speed breaker, which is called Hump. It utilizes both mechanical technologies and electrical techniques for the power generation and its storage.
  • Whenever the vehicle is allowed to pass over the dome it gets pressed downwards, then the springs that are attached to the dome are compressed and the rack, which is attached to the bottom of the dome moves downward in reciprocating motion. Since the rack has teeth connected to gears, there exists conversion of reciprocating motion of rack into rotary motion of gears but the two gears rotate in opposite direction. 
  • A flywheel is mounted on the shaft whose function is to regulate the fluctuation in the energy and to make the energy uniform. So the shafts will rotate with certain rpm. These shafts are connected through a belt drive to the dynamos, which converts the mechanical energy into electrical energy. The conversion will be proportional to the traffic density Whenever an armature rotates between the magnetic fields of south and north poles, an E.M.F (electro motive force) is induced in it. So, for inducing this E.M.F. armature coil has to rotate, and for rotating this armature it is connected to a long shaft. For this rotation kinetic energy of moving vehicles is utilized. 
  • The power is generated in both the directions; so to convert this power into one direction, a special component is used, called zener diode, for continuous supply. The electrical output can be improved by arranging these POWER HUMPS in series. This generated power can be amplified and stored by using different electrical device.

2) you can visit the given link to get another method


3) Generation of electricity by piezoelectric material

Piezoelectric materials convert mechanical pressure into electrical energy and vice versa. 

With the help of aurdino or microprocessor we can prepare a set up.When the running vehicles passes over the combination of piezoelectric material the mechanical force is applied and shape of material get compressed and wire is connected across the ends of material to collect the electrical energy. 

if u have any more queries then ask.

answered Jan 19, 2016 by Avinash
edited Mar 16, 2016 by slow_learner