Piezoelectric energy harvester and wireless switch including the same
AssigneeSamsung Electo-Mechanics Co., Ltd.
InventorsIn Wha Jeong, Jong Heum Park, Hugh Kim
Life of this patent
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Abstract
Examples provide a piezoelectric energy harvester and a wireless switch including the same. The piezoelectric energy harvester includes a pressure transmission part situated between a pressing plate and a piezoelectric body, so as to transmit a uniform amount of pressure to the piezoelectric body, thereby generating a constant level of energy. In addition, a wireless switch uses energy generated in the piezoelectric energy harvester as its driving power, thereby transmitting radio frequency (RF) communications signals to an external electronic device to control the operation of the electronic device.
Claims18
A piezoelectric energy harvester comprising:
- a plate;
- a piezoelectric element disposed on one surface of the plate;
- a pressing plate disposed so as to be spaced apart from the piezoelectric element;
- and
- a pressure transmission element disposed directly between the pressing plate and the piezoelectric element, and comprising a body,
- wherein an area of an upper surface the body is larger than an area of a lower surface of the body.
A wireless switch comprising:
- a piezoelectric energy harvester comprising
- a plate,
- a piezoelectric element disposed on one surface of the plate,
- a pressing plate disposed so as to be spaced apart from the piezoelectric element, and
- a pressure transmission element disposed directly between the pressing plate and the piezoelectric element, and comprising a body, wherein an area of an upper surface the body is larger than an area of a lower surface of the body;
- and
- a transmitting module configured to transmit electrical signals using power generated by the piezoelectric energy harvester as driving power.
A piezoelectric energy harvester, comprising:
- a piezoelectric element disposed on a surface of a plate;
- a pressing plate spaced apart from the piezoelectric element;
- and
- a pressure transmission element disposed between the pressing plate and the piezoelectric element, and comprising a first elastic member spaced apart from a second elastic member,
- wherein the first elastic member is disposed on an upper surface of the pressure transmission element and the second elastic member disposed on a lower surface of the pressure transmission element, and
- wherein an area of the upper surface is larger than an area of the lower surface.
Dependencies are inferred from the claim text.