Knee Energy Harvester Using Servo Motor

In this paper the design and the development of a knee energy harvester, which uses a servo motor to harvest electrical energy from biomechanical energy created during a knee motion, is presented. The proposed system works around the limitations of existing energy harvesting methods using an advanced servo motor and optimized gear mechanism followed by a compact and ergonomic design. A microcontroller for real time monitoring, sensors for motion detection, a power management unit for efficient energy storage, and a lightweight framework for user comfort are all key components. Energy conversion efficiencies of approximately 80% with power outputs varying from 150 mW while walking to 250 mW while running were demonstrated by experimental evaluations of the device. The adaptable system to various motion patterns and the durable and user friendly design make it suitable for wearable electronics, medical devices and portable communication systems. The results of this study indicate that the proposed knee energy harvester may enable sustainable energy harvesting technology to strive.