Can the current and voltage generated by the piezoelectric vibratory energy harvester be measured experimentally?In other words, can we measure the power generated by the piezoelectric vibration energy collector ？
Hi,
The output current and voltage can be monitored by putting a load resistor at the output of the peizo generator. Measured the voltage drop across the known value of the resistor and back calculate the current. This is the usual method.
Regards
Amit
Hi 姚冬霜 冬霜 Yao
There are two options:
1. (Easier) Measure the voltage of a resistor placed into the piezoelectric eletrical terminals. Then, you have the value of the resistor and the measured voltage. Thus, it is possible to calculate the current by I=V/R.
2. (Harder but more comprehensive) Connect a frequency analyzer equipment into the terminals of the piezoelectric device. Then, it is possible to extract the frequency response (gain as function of frequency). Usually, frequency analyzers can provide voltage gain as function of frequency. You can also use a resistor as load in this case.
I hope this helps
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