Moisture detection element, gas detection device, and breath inspection system
AssigneeHitachi, Ltd.
InventorsHironori Wakana, Masuyoshi Yamada, Minoru Sakairi
Life of this patent
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Abstract
In order to provide a moisture detection element, a gas detection device, and a breath inspection system that are compact and have high response performance, the moisture detection element includes an insulating section made of an insulating material, an application electrode to which an voltage is applied, and a detection electrode that detects a voltage signal corresponding to a current flowing through an electrical path via water molecules adsorbed on the insulating section by the voltage applied to the application electrode.
Claims11
A moisture detection element comprising:
- an insulating section made of an insulating material having a surface,
- an application section to which a voltage is applied, and
- an outputting section configured to output a voltage signal corresponding to a current flowing through an electrical path between the application section and the outputting section via water molecules adsorbed on the surface of the insulating material by the voltage applied to the application section, wherein the application section and the outputting section each include electrodes arranged on the surface of the insulating material
- wherein the insulating section has projections and depressions provided on the surface on which the water molecules are adsorbed,
- wherein the projections and depressions of the insulating section in the case of use in an environment at a temperature equal to or higher than a prescribed temperature are larger in magnitude than the projections and depressions of the insulating section in the case of use in an environment at a temperature equal to or lower than the prescribed temperature.
A moisture detection element comprising:
- an insulating section made of an insulating material having a surface,
- an application section to which a voltage is applied, and
- an outputting section configured to output a voltage signal corresponding to a current flowing through an electrical path between the application section and the outputting section via water molecules adsorbed on the surface of the insulating material by the voltage applied to the application section, wherein the application section and the outputting section each include electrodes arranged on the surface of the insulating material, wherein
- a first electrode has a rod shape,
- a second electrode has a cylindrical shape that encloses the first electrode, and
- a tabular section is connected to the first electrode and the second electrode, wherein
- the tabular section includes the insulating section, the application section, and the outputting section,
- one of the application section and the outputting section being connected to the first electrode,
- the other of the application section and the outputting section being connected to the second electrode.
Dependencies are inferred from the claim text.