System and method for filtering an alarm

Details System and method for filtering an alarm System and method for filtering an alarm

1998-11-20

2000-09-26

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340500, 340501, 340511, G08B 2900

Patent

active

061247901

ABSTRACT:
A method for filtering an alarm can be broadly summarized by the following steps: The state of an alarm is read or determined over time, which creates a pattern of state transitions for the alarm. The pattern of state transitions for the alarm are integrated to produce a second alarm having a second pattern of state transitions. State transitions for the second alarm are controlled by using a pair of hysteresis threshold values to filter out redundant alarm state transitions that do not convey useful or necessary fault information.

REFERENCES:
patent: 4543567 (1985-09-01), Shirata et al.
patent: 5155468 (1992-10-01), Stanley et al.
patent: 5233329 (1993-08-01), Lippmann et al.
patent: 5309147 (1994-05-01), Lee et al.
patent: 5329173 (1994-07-01), Murakami et al.
patent: 5444431 (1995-08-01), Kenny

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