Title:

Biomechanical Electricity Generator for the Knee Joint

The “Biomechanical Electricity Generator for the Knee Joint” is proposed to generate electricity from the movement of the knee joint. As human beings we walk everywhere, therefore it would be useful and practical to harness the energy generated by this action. Our mission was to build a biomechanical device that utilizes the oscillatory motion of the knee joint while walking to create mechanical energy and then converts that mechanical energy into electrical energy. The planned method was to use a simple mechanical system to spin an AC motor and charge a battery pack attached to the hip. The goal was to generate a consistent flow of electrical current while a person was walking, ideally enough to charge a cell phone. Ultimately, the device successfully generated a small current, however, it was too weak to meet the demand of a cell phone. Therefore, the team added an active voltage amplifier to increase the generated potential and to achieve the desired practical applications.

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