Gas sensor
AssigneeTaiyo Yuden Co., Ltd.
InventorMasashi Hattori
Life of this patent
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Abstract
A gas sensor offering high gas identification property includes: a first gas detection element having a first oscillator, as well as a first gas-adsorption film which is provided on the first oscillator and constituted by two or more fluorine resins including vinylidene fluoride resin; a second gas detection element having a second oscillator, as well as a second gas-adsorption film which is provided on the second oscillator and constituted by two or more fluorine resins including vinylidene fluoride resin and which has adsorption characteristics different from those of the first adsorption film; and a detection circuitry that detects the resonance frequencies of the first and second gas detection elements.
Claims12
A gas sensor, comprising:
- a first gas-detection element having a first oscillator, as well as a first gas-adsorption film which is provided on the first oscillator and made of a copolymer constituted by two or more fluorine resins including vinylidene fluoride resin and trifluoroethylene, wherein a resonance frequency of the first oscillator is changed when the first gas-adsorption film adsorbs gas;
- a second gas-detection element having a second oscillator, as well as a second gas-adsorption film which is provided on the second oscillator and made of a copolymer constituted by two or more fluorine resins including vinylidene fluoride resin and trifluoroethylene, wherein a blending ratio of the two or more fluorine resins used for the second gas-detection film is different from that used for the first gas-detection film in a manner that the second gas-adsorption film has gas-adsorption characteristics different from those of the first gas-adsorption film wherein a resonance frequency of the second oscillator is changed when the second gas-adsorption film adsorbs gas;
- and
- a detection circuitry that detects resonance frequencies of the first and second gas-detection elements.
Dependencies are inferred from the claim text.