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Dynamic idea: Walk and generate energy!

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Innovative: A.R. Dipika and K.K. Deepika with their creation
Innovative: A.R. Dipika and K.K. Deepika with their creation

Two engineering students develop a knee dynamo that generates electricity when a person walks with the device strapped to the leg

Two engineering students develop a knee dynamo that generates electricity when a person walks with the device strapped to the leg

With the number of hours spent on mobiles increasing day-by-day, battery getting discharged at a faster pace is a reality one has to deal with, more so youngsters who cannot move without a mobile.

Charging the mobile while on the move is a dream for many and two students of Scient Institute of Technology have found out an answer for it.

Two final semester students of Electrical & Electronics Engineering branch of the college A.R. Dipika and K.K. Deepika have developed an interesting model for charging batteries, cell phones and other personal gadgets using a Knee dynamo, which a person can wear on his legs and can carry easily.

Knee dynamo is a bio-mechanical energy harvester that generates electricity during walking with little extra effort.

This is to be strapped on to a person’s leg just on the knee. It works when he walks and generates electricity.

“It is quite light, assists the muscles in the walking action and simultaneously generates a small voltage when the person walks,” say the girls.

Explaining further the girls say when the person walks with this model strapped on to one of his knees, the movements of the leg cause the gear-trains to rotate and the rotational movement from the gears is transmitted to the shaft of the dynamo.

The magnets of the dynamo spin inside and AC current is produced, which is converted into DC and is available at the terminals for various uses.

“It is experience of all of us that, other than during restful periods like sleep, the human body is invariably in motion.

We can convert this motion into useful energy. Tests of the 1.6 kg device produced an average of 5 watts of electricity from a slow walk. During experimentation, efforts are made to generate more electricity and it was found that even up to 13 watts from just normal walking, they say. “The project was taken up under the guidance of C. Kulasekhar, Assistant Professor and support from EEE faculty,” said the vice principal B. Sridhar Reddy.

R. RAVIKANTH REDDY


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