Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1995-02-21
1997-08-19
Swarthout, Brent A.
Communications: electrical
Condition responsive indicating system
With particular system function
340506, 340517, 340523, 34082506, 340577, 34028605, 340293, G08B 1900
Patent
active
056592922
ABSTRACT:
Outputs from a smoke detector and non-fire sensors such as temperature and humidity can be combined to produce a delay in a signal from the smoke sensor indicative of a potential fire condition. The signals can be combined locally and all of the sensors can be carried in a single housing. Alternately, the sensors can be carried in separate housings and combined at a remote control panel. The value output from the humidity and temperature sensor can be used in determining whether or not to produce a delay. Alternately, the rate of change of either or both parameters can be used to determine whether a delay is necessary.
REFERENCES:
patent: 4536747 (1985-08-01), Jensen
patent: 4611197 (1986-09-01), Sansky
patent: 4660024 (1987-04-01), McMaster
patent: 4725820 (1988-02-01), Kimura
patent: 4749985 (1988-06-01), Corsberg
patent: 4831361 (1989-05-01), Kimura
patent: 5486811 (1996-01-01), Wehrle et al.
Von Dr. Gustav Pfister Mannedorf; Fehlalarme in der Branddetektion: Dank neuer Technologie bald vom Tisch?; Marz 94; pp. 37-42.
Dipl.-Ing. Michael Buschmann; Intelligentes Trio; 14 Oktober 1994; p. 408.
Pittway Corporation
Pope Daryl C.
Swarthout Brent A.
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