П`єзоелектричні перетворювачі як джерела автономного живлення систем моніторингу

Abstract

The paper considers the physical principles of constructing energy harvesting systems based on the direct piezoelectric effect. The process of converting mechanical vibration energy into electrical energy and the influence of frequency matching on the system efficiency are analyzed. The equivalent electrical circuit of a piezoelectric transducer and the role of impedance matching for maximizing power output are described. The prospects of using cantilever-type piezoelectric generators for powering autonomous nodes of wireless sensor networks are shown.