发明名称 |
FOERFARANDE OCH ANORDNING FOER OEVERFOERING AV MAETVAERDEN I ETT BRANDALARMSYSTEM |
摘要 |
In a fire alarm system individual fire alarms are connected in series by reporting lines with a central signal station. In order to be able to connect a greater number of fire alarms with the individual reporting or signaling lines and/or in order to be able to dispatch an increased amount of current through the reporting lines, the reporting or signaling lines from the last fire alarm of a line are returned back to the central signal station in the form of a ring circuit or loop. Upon the absence of signals at a reporting line an interrogation device is reversed, so that there can be ensured that in the event of a line disturbance or breakdown of a fire alarm the remainder of the fire alarms still can be utilized for giving a signal. The individual fire alarms are structured such that during assembly the inputs and outputs can be mutually interchanged. |
申请公布号 |
FI811935(L) |
申请公布日期 |
1981.12.24 |
申请号 |
FI19810001935 |
申请日期 |
1981.06.18 |
申请人 |
CERBERUS AG |
发明人 |
MUELLER PETER;SCHIBLI EUGEN;SCHEIDWILER ANDREAS;MUGGLI JUERG |
分类号 |
G08B25/00;G08B17/00;G08B26/00;G08B29/02;G08B29/06 |
主分类号 |
G08B25/00 |
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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