Project Building Instructions ( Electricity From Walking) l3b13

ELECTRICITY FROM WALKING

By Santhosh. R

TABLE OF CONTENTS PAGE INTRODUCTION....................................................................1 PRINCIPLE..............................................................................1 MATERIALS REQUIRED....................................................2 PROCEDURE..........................................................................2 CIRCUIT....................................................................................5 PHOTOS OF THE PROJECT.............................................5 RESULTS..................................................................................8 APPLICATIONS......................................................................8 REFERENCE............................................................................9

INTRODUCTION Whenever we walk we waste our energy. There are many ways to recover some of this energy in the form of electricity. The easiest and the space saving way is to produce electricity from

piezoelectric property of certain crystals.

PRINCIPLE Piezoelectricity is the ability of some materials

to

generate

an

electrical

potential

response to applied mechanical stress. This may take the form of a separation of electrical charge across the crystal lattice. If the material is not short circuited ,the charge induces a voltage across the material. The word is derived from the Greek piezo

or piezein, which means to squeeze or press.

PAGE 1

MATERIALS REQUIRED Piezoelectric transducers -as required for the area 1N4148 diodes-equal to the no. Of transducers Cardboard-required size wires-required Multimeter-1 Crocodile or alligator clips with wires-2 Soldering iron-1 soldering wire wire strippers Insulated copper wire-a reel

PROCEDURE The picture to the right is the first prototype before building my project It contains two sheets of cardboard with

a

piezotransducer

wired

between the two. The readings as I stamped on it are pictured below, PAGE 2

The pictures of the soldering on the piezoelectric transducers are,

For the project first we have to arrange the piezoelectric transducers on the cardboard and mark their places for sticking on later.

Cut pieces of cardboard to a size larger than the transducers.

PAGE 3

Take a reel of insulated copper wire and mark the places and strip off the enamel on the copper wire. Cover the stripped piece of wire with solder. Solder a end of diode with one of the electrodes of the transducers.



other

electrodes

of

the

transducers

commonly.

Connect the cathodes of all the diodes together.

The connection of the diodes will act as a positive source and the other wire connected commonly acts as a ground.

PAGE 4

CIRCUIT To the circuit for smoothing

From piezoelectric transducer

AC to DC

Voltage stabilization and regulation

Step up to AC to run appliances

Battery charging

PHOTOS OF THE PROJECT

Finished pictures

PAGE 5

The cardboard with transducers covered with a layer of sponge. The pictures of my project displayed in an SCIENCE FAIR are below,

Me with my project,(the project is not displayed as it was put on the floor) PAGE 6

My project covered with a designed sheet .

The readings showing 13.93 Volt

PAGE 7

RESULTS ➔

The output power is directly proportional

to the pressure applied. ➔

No constant output is seen unless a high

frequency of stepping on it and off it is present. ➔

It has certain dis-advantages of heavy

weights or loads. ➔

When the area of the cells are increased

the power output is also increased.

APPLICATIONS ✔ Can be implemented in heavy crowded areas as a type of floor. ✔ Can be implemented in the boots of the soldiers and the power generated can be used for their equipments and thus it reduces the load of battery backups carried by the soldiers. ✔ Research has been going on by scientists for the above mentioned item. ✔ It has been implemented in a disco in Netherlands and in sub-ways in Japan. PAGE 8

REFERENCE • http://en.wikipedia.org/wiki/Piezoelectricity

If you have any doubts regarding this project please feel free to me at [email protected]

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