Abstract
In this paper, we presented a measurement of power output versus acceleration with a data logger. The vibration energy harvester consists of a Si grid, a vibration mass, which has a charged electret film, and a cover glass. The data logger can measure voltage outputs, acceleration, temperature, humidity, and electrocardiogram (ECG). Accelerations and output voltages from the harvester were measured by 10 bit ADC (analog-to-digital converter) and the sampling frequency was 125 Hz. The power output at different accelerations on modal thruster is calculated by the output voltage from the harvester and the 20 MΩ load resistance. The power output was proportional to acceleration and the maximum generated power was 17.3 nW. The generated power worn on ankle while walking was 2.1 nW.
