发明名称 |
Method and apparatus for monitoring an alarm system |
摘要 |
A method and apparatus for monitoring an alarm system such as a fire alarm system having a plurality of alarms connected to a central station determine the amount of departure of measured alarm values from a rated quiescent value and calculate a fluctuation value therefrom, the fluctuation value then being compared at selected time intervals with a rated limiting value. If the result of the comparison shows that the fluctuation value is less than the rated limiting value, a malfunction signal is displayed.
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申请公布号 |
US4543565(A) |
申请公布日期 |
1985.09.24 |
申请号 |
US19820375318 |
申请日期 |
1982.05.05 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
OBERSTEIN, KARLA;THILO, PEER |
分类号 |
G02B26/00;G08B26/00;G08B29/04;(IPC1-7):G08B29/00 |
主分类号 |
G02B26/00 |
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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