发明名称 |
Sensor device, and disaster prevention system and electronic equipment each having sensor device incorporated therein |
摘要 |
A sensor device of the present invention is capable of surely detecting occurrence of a fire and a type of the fire. The sensor device includes a detection element made of an organic semiconductor element or an inorganic semiconductor element which is varied in characteristic value (i.e., resistance) thereof by both gas produced in a flaming-type fire and a smouldering-type fire and of which a variation in resistance by gas produced in a flaming-type fire is different in polarity from that by gas produced in a smouldering-type fire. A resistance of the detection element is extracted by a resistance extractor and then fed to a resistance decrease discriminator and a resistance increase discriminator, wherein a decrease or increase in resistance of the element is discriminated. An information output circuit outputs a predetermined signal depending on discrimination results provided by the discriminators, to thereby detect occurrence of a fire and/or a type of the fire.
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申请公布号 |
US5830412(A) |
申请公布日期 |
1998.11.03 |
申请号 |
US19960697015 |
申请日期 |
1996.08.16 |
申请人 |
NITTAN COMPANY LIMITED |
发明人 |
KIMURA, TETSUO;TANAKA, SEIICHI;TAKAHASHI, NARIMASA;HASHIMOTO, RYUKICHI |
分类号 |
G01N33/00;G08B17/117;(IPC1-7):G01N27/04 |
主分类号 |
G01N33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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