发明名称 |
Alarm system having improved false alarm rate and detection reliability |
摘要 |
An alarm system has two output modes, one providing relatively high detection probability and the other providing relatively low false alarm probability. Two or more sensors are coupled to an associated logic circuit which provides a first alarm output in response to actuation of any one of the sensors, and a second alarm output in response to actuation of the two or more sensors within a predetermined time interval.
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申请公布号 |
US4195286(A) |
申请公布日期 |
1980.03.25 |
申请号 |
US19780867479 |
申请日期 |
1978.01.06 |
申请人 |
AMERICAN DISTRICT TELEGRAPH |
发明人 |
GALVIN, AARON A |
分类号 |
G08B23/00;G08B29/16;G08B29/18;(IPC1-7):G08B29/00 |
主分类号 |
G08B23/00 |
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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