Patent
Model based alarm coordination
TLDR
In this paper, a model-based alarm coordination system coordinates primary and secondary alarm notifications in order to ascertain whether they are caused by a single fault, or multiple faults, in a complex electrical system.Abstract:
A model-based alarm coordination system coordinates primary and secondary alarm notifications in order to ascertain whether they are caused by a single fault, or multiple faults, in a complex electrical system. The alarm coordination function is part of a larger overall Fault Management Support (FMS) system. The FMS system is a framework that, when combined with object-specific fault management parts, offers uniform fault management functions to managed objects (MOs) within the electrical system. Each MO is viewed as a self-contained, functional unit, and is responsible for its own internal fault management. Therefore, there are no global or centralized fault management functions. Object relation models, based on functional dependencies between objects, are used to automatically solve the alarm coordination problem which arises when a large number of faults are reported in response to a single fault which causes out-of-specification performance in many dependent objects. Little object-specific programming is required.read more
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References
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Patent
Built-in passive fault detection circuitry for an aircraft's electrical/electronic systems
TL;DR: In this paper, the authors present a fault detection circuitry for line replaceable units (LRUs) in an aircraft that can detect and distinguish between open impedance faults and open wiring faults.
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Reliability and workability test apparatus for an environmental monitoring system
TL;DR: In this paper, a controller is arranged to test the workability and reliability of a plurality of detector units on a cyclic basis, where the controller includes a test routine program for both issuing the test instruction and for determining if the digital signal test value is within the tolerance range and issuing a trouble output indicative of the test value being outside the range.
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Alarm system incorporating dynamic range testing
Lance Weston,Harry D. Schweiger +1 more
TL;DR: In this article, a dynamic range testing feature was proposed to detect when the circuit of a resistor element has degraded to a pre-trouble resistance range, such that the circuit can be serviced and repaired prior to its degrading to a point which will trigger the alarm system.