Breath sensor, breath sensor unit, and breath sensing method
AssigneeMurata Manufacturing Co., Ltd.
InventorSHOZO OTERA
Life of this patent
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Abstract
A breath sensor includes a base body, a first electrode provided on a part of a surface of the base body, a second electrode provided on a part of the surface of the base body, and a covering layer made of a material that does not pass moisture therethrough, the covering layer covering the second electrode with the base body. The base body is preferably made of a material whose surface potential changes due to attachment of moisture to one of a surface of the first electrode and the surface of the base body. A surface potential on a side of the first electrode of the base body changes when a breath containing moisture touches the surface of the first electrode.
Claims15
A breath sensor comprising:
- a base body having an outer surface;
- a first electrode provided on part of the outer surface of the base body;
- a second electrode provided on a part of the outer surface of the base body;
- and
- a covering layer made of a material that does not pass moisture therethrough, the covering layer covering the second electrode,
- the base body being made of a material whose surface potential changes due to attachment of moisture to the surface of the first electrode and/or the outer surface of the base body.
A breath sensing method, comprising:
- (a) detecting a potential difference between a first electrode and a second electrode of a breath sensor of the type that includes:
- (1) a base body;
- (2) the first and second electrodes being located on the base body;
- and
- (3) a covering layer covering layer covering the second electrode and made of a material that does not pass moisture there through, the base body being made of a material whose surface potential changes due to attachment of moisture to a surface of the first electrode and/or a surface of the base body;
- and
- calculating a number of breaths within a predetermined period of time based on fluctuation of the potential difference.
Dependencies are inferred from the claim text.