| 摘要 |
<p>The electric energy generated by a piezoelectric device PEG (10), when mechanically stressed, is transferred from the PEG (10) to a storage element (e.g., a capacitor (C1) or a battery) by selectively coupling an inductor (L1) in the conduction path between the PEG (10) and the storage element (C1). In one embodiment, the transfer of energy is optimized by allowing the amplitude of the electric signal to reach a peak value before transferring the electrical energy via an inductive network (L1) to a capacitor (C1) or a battery for storage. Electrically, the PEG (10) is operated without a significant loading (e.g., essentially open circuited) when the amplitude of the voltage generated by the PEG (10) is increasing. When the amplitude of the voltage has peaked, or reached a predetermined value, the electrical energy generated by the PEG (10) is coupled to an inductive-capacitive network (L1, C1) for absorbing and storing the energy produced by the PEG (10).</p> |
