Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1995-05-16
1999-01-26
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
With particular system function
340506, 340511, 340514, 340517, 340521, 340522, 340588, 340589, 364138, 364139, G08B 2300
Patent
active
058642862
ABSTRACT:
There is provided an alarm system for detecting and warning of the presence of alarm and trouble conditions in a plurality of zones. The system comprises a control panel having a central processing unit and a plurality of alarm devices, each having a microprocessor, that are electrically coupled to the control panel. In particular, the present invention is a two-tier monitoring system such that each alarm device monitors its zone for a shorter rolling time period and the control panel monitors the same zone of the alarm device for a longer rolling time period. An electronic circuit of the alarm device, including the microprocessor, reads and processes data received from various sensors of the alarm device. Periodically, the alarm device updates a first reference value stored in its memory based on the data received from the sensors during the shorter rolling time period. At the same time, the control panel stores a second reference value in its memory that is based on data received during the longer rolling time period and periodically updates that similar reference value. Accordingly, the two-tier monitoring system of the present invention provides for the distribution of tasks between the control panel and at least one alarm device coupled thereto.
REFERENCES:
patent: 4290055 (1981-09-01), Furney et al.
patent: 4525700 (1985-06-01), Kimura et al.
patent: 4749987 (1988-06-01), Ishii
patent: 4901316 (1990-02-01), Igarashi et al.
patent: 4954809 (1990-09-01), Right et al.
patent: 4962368 (1990-10-01), Dobrzanski et al.
patent: 5017905 (1991-05-01), Yuchi
patent: 5117219 (1992-05-01), Tice et al.
patent: 5267180 (1993-11-01), Okayama
patent: 5298223 (1994-03-01), Berger et al.
patent: 5347515 (1994-09-01), Marino
patent: 5351034 (1994-09-01), Berger et al.
patent: 5471194 (1995-11-01), Guscott
Morris Brian M.
Price Douglas
Right Robert W.
General Signal Corporation
Hofsass Jeffery
Pope Daryl C.
LandOfFree
Distributed intelligence alarm system having a two- tier monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distributed intelligence alarm system having a two- tier monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed intelligence alarm system having a two- tier monitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1453187