The goal of the Project Report On Energy Harvesting From Passive Human Power is to investigate energy sources to power wearable devices from passive human activity (motion and heat). Electrical energy can be harvested from human motion employing different transducers: piezoelectric materials, variable capacitors, and inductive generators. Thermoelectric generators will be the way to extract electrical energy from the temperature difference between the human body and the environment. Other possibilities in this research area like extracting electrical energy from the temperature difference between the wearable device and the environment or the human body. The difference between every human power source (heat, human walking, arm motion, etc.) gives as result as many sources as possible locations or movements of the human body.
To select the appropriate source is equivalent to select the appropriate motion and location in the human body. Therefore, the first phase in the design of a harvested energy generator is to make an acceleration and temperature of different parts of the body for different activities. The second phase consists in obtaining a software model of the generator from the data obtained in the first phase and the electrical circuit of the transducer. The third phase consists in the design of a converter and/or storage circuit that has to take into account the output signal of the generator and its impedance. A final step of redesign may be necessary in order to adequate the simulations made in the second phase and the real results obtained by a prototype. Advances in low power design open the possibility to harvest energy from the environment to power electronic circuits.
Project Report On Energy Harvesting From Passive Human Power Conclusion:
The challenge is to produce small low-energy converters, losing a considerable part on the behavior of otherwise insignificant change and loss of sleep, although the function blocks operate only a fraction of the period of oscillation current. However, a net continuous power output up to a few charging a battery, so that, upon application of a sensor in the power supply, which is often the case, providing the battery easily. The idea is to supplement the system with enough energy over time in order to prolong his life and avoid having to replace an otherwise easily exhaustible battery.
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