Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1984-02-21
1986-07-01
Rowland, James L.
Communications: electrical
Condition responsive indicating system
With particular system function
340501, G08B 2900
Patent
active
045982716
ABSTRACT:
The circuit arrangement generating at least one noise-level warning threshold monitors the noise-level of detectors in an alarm system. The noise-level warning threshold assumes a fixed relation to the operating or working point level of the signal transmitted by the detector of the alarm system while taking into account shifts in the level of the operating or working point. An alarm storage or buffer disposed in the detector is set without transmitting an alarm signal when the noise-level warning threshold has been exceeded. The noise-level is monitored during normal operation and gives sufficiently early warning of a tendency to generate false alarms.
REFERENCES:
patent: 4051467 (1977-09-01), Galvin
patent: 4222041 (1980-09-01), Von Tomkewitsch et al.
patent: 4333093 (1982-06-01), Raber et al.
patent: 4348661 (1982-09-01), Lucchesi
patent: 4459583 (1984-07-01), Vanderwalt et al.
patent: 4470047 (1984-09-01), Vogt et al.
patent: 4479113 (1984-10-01), McNeilly et al.
patent: 4506253 (1985-03-01), Mande et al.
patent: 4517554 (1985-05-01), Moser et al.
Temperli Stefan
Wagli Peter
Cerberus AG
Kleeman Werner W.
Rowland James L.
Tumm Brian R.
LandOfFree
Circuit arrangement for monitoring noise levels of detectors arr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit arrangement for monitoring noise levels of detectors arr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for monitoring noise levels of detectors arr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1084418