Piezoelectric energy harvester and wireless switch including the same
First Claim
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1. A piezoelectric energy harvester comprising:
- a plate that is elastically deformable;
a piezoelectric element situated on the plate;
a magnet situated to be spaced apart from the plate; and
an insulator movably situated between the plate and the magnet,wherein the plate is elastically deformed by a magnetic force of the magnet.
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Abstract
Provided are a piezoelectric energy harvester and a wireless switch including the piezoelectric energy harvester. The wireless switch uses energy generated in a piezoelectric energy harvester as a source of driving power, thereby transmitting communications signals to an external electronic device without requiring a battery. In addition, the piezoelectric energy harvester generates displacement in a piezoelectric element through a magnetic force generated in a magnet, thereby generating a constant level of energy when generating the driving power.
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Citations
14 Claims
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1. A piezoelectric energy harvester comprising:
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a plate that is elastically deformable; a piezoelectric element situated on the plate; a magnet situated to be spaced apart from the plate; and an insulator movably situated between the plate and the magnet, wherein the plate is elastically deformed by a magnetic force of the magnet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A piezoelectric energy harvester comprising:
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a plate that is elastically deformable; a piezoelectric element situated on the plate; a magnet situated to be spaced apart from the plate; and an insulator movably situated to allow magnetic force of the magnet to have an influence on the plate or to block the magnetic force of the magnet acting on the plate. - View Dependent Claims (13, 14)
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Specification