| US 7,520,155 B2 | ||
| Gas detection apparatus and method | ||
| Takashi Sasaki, Saitama (Japan); Hidetoshi Oishi, Saitama (Japan); Takashi Saito, Saitama (Japan); and Akihiro Suzuki, Saitama (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Nov. 22, 2005, as Appl. No. 11/285,957. | ||
| Claims priority of application No. 2004-343008 (JP), filed on Nov. 26, 2004. | ||
| Prior Publication US 2006/0113199 A1, Jun. 01, 2006 | ||
| Int. Cl. G01N 27/00 (2006.01) | ||
| U.S. Cl. 73—1.06 | 12 Claims |
| 1. A gas detection apparatus comprising:
a gas detection chamber adapted to receive a gas that contains moisture;
a gas sensing element provided in the gas detection chamber to detect a component of the gas;
an anomaly detection device provided to detect an anomaly of the gas sensing element;
a heater provided to heat the gas detection chamber to lower a relative humidity in the gas detection chamber; and
a heater regulator provided to regulate an output of the heater, wherein the heater regulator causes the heater to continue
to heat the gas detection chamber when the anomaly detection device detects the anomaly of the gas sensing element,
wherein the gas sensing element comprises an element selected from the group consisting of a catalytic combustible sensing
element, a semiconductor sensing element, a solid-electrolyte sensing element, an electrochemical sensing element, a field-effect
transistor sensing element, a diode sensing element, and an adsorption effect transistor sensing element.
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