Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-04-04
1988-06-07
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
340511, 364178, G08B 1700
Patent
active
047499877
ABSTRACT:
An analog fire detector which comprises sensor means for detecting, in analog form, one or more kinds of quantity of state which change due to fire; a sampling means for sampling the detection outputs from the sensor means with a predetermined period; and fire determining means which predicts future fire data changes from the sampling data and generates a fire determination output signal when the prediction data satisfies predetermined fire conditions. The invention also provides an analog fire alarm system which comprises a central signal station; a plurality of on-off type fire detectors connected to a pair of power supply/signal lines connected to said central signal station in such a manner that the signal lines are short-circuited into low impedance when the value of a quantity of state changed due to a fire exceeds a threshold value; and an intelligent fire detector installed in specific areas, where the signal lines are extended, such as an important supervisory area or an area where a false alarm is liable to occur, and adapted to short-circuit the signal lines into low impedance when a predicted value of a future quantity of state changing due to a fire satisfies predetermined fire conditions; such intelligent fire detector being the analog fire detector mentioned above.
REFERENCES:
patent: 4644331 (1987-02-01), Matsushita et al.
Hochiki Corporation
Mullen Jr. Thomas J.
Orsino Joseph A.
LandOfFree
Analog fire detector and analog fire alarm system using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analog fire detector and analog fire alarm system using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog fire detector and analog fire alarm system using the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-847003