Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1987-04-13
1988-06-07
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340500, 340506, 340519, 340522, 340523, 340525, 36443101, G08B 2300
Patent
active
047499850
ABSTRACT:
A functional relationship-based alarm processing system and method analyzes each alarm as it is activated and determines its relative importance with other currently activated alarms and signals in accordance with the relationships that the newly activated alarm has with other currently activated alarms. Once the initial level of importance of the alarm has been determined, that alarm is again evaluated if another related alarm is activated. Thus, each alarm's importance is continuously oupdated as the state of the process changes during a scenario. Four hierarchical relationships are defined by this alarm filtering methodology: (1) level precursor (usually occurs when there are two alarm settings on the same parameter); (2) direct precursor (based on caussal factors between two alarms); (3) required action (system response or action) expected within a specified time following activation of an alarm or combination of alarms and process signals); and (4) blocking condition (alarms that are normally expected and are not considered important). The alarm processing system and method is sensitive to the dynamic nature of the process being monitored and is capable of changing the relative importance of each alarm as necessary.
REFERENCES:
patent: 4015237 (1977-03-01), Takatani et al.
patent: 4401971 (1983-08-01), Saito et al.
V. Exparza, Jr. et al., "Safety Monitoring in Process and Control," Apr., 1984, pp. 1-6, Mexican-American Eng. Society Eighth National Engineering Symposium.
D. Corsberg et al., "A Functional Relationship Based Alarm Processing System for Nuclear Power", Sep. 1986, Intenational ANS/ENS meeting on Operability of Nuclear Power System in Normal and Adverse Environments.
Corsberg et al., "An Object-Oriented Alarm-Filtering System", Apr. 1986, 6th Power Plant Dynamics, Control and Testing Symposium.
DMA (Diagnosis of Multiple Alarms), disclosed in an article by M. M. Danchak, entitled "Alarms Within Advanced Display Streams: Alternative and Performance Measures", published in NUREG/CR-2276, EGG-2202, Sep. 1982.
Star, disclosed in an article by L. Felkel, entitled "The Star Concept, Systems to Assist the Operator During Abnormal Events", published in Atomkernenergie, Kertechnik, vol. 45, No. 4, 1984, pp. 252-262.
DASS (Disturbance Analysis and Surveillance Systems), disclosed in an article by A. B. Long, R. M. Kanazave et al., entitled "Summary and Evaluation of Scoping and Feasibility Studies for Disturbance Analysis and Surveillance Systems (DASS)", published in Topical Report EPRI NP--1964, Dec. 1980.
Crosland Donnie L.
Fisher Robert J.
Glenn Hugh W.
Hightower Judson R.
United States of America as represented by the United States Dep
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