The acquisition and analysis of vibration energy signal generated by magnetic shape memory alloys

摘要

Mechanical vibration energy is widespread in nature. Lots of research shows that the inverse effect of the magnetic shape memory alloys (MSMA) can be fully used to convert the vibration energy in nature into electrical energy, to achieve the power supply of the sensor and the lithium battery. In order to acquire the accuracy of simulate of the MSMA, the signal generated by MSMA need to be transformed by Fourier decomposition into the frequency domain signal. So it can be fitted into several superposition of sinusoidal signals with different Frequency, amplitude and phase, and then be collected through the chip BQ25570 and its surrounding circuit. The simulation of signal acquisition and analysis is achieved and the output power is studied.