METHOD, DEVICES AND COMPUTER PROGRAM FOR ASSISTING IN THE DIAGNOSTIC OF AN AIRCRAFT SYSTEM, USING FAILURE CONDITION GRAPHS
First Claim
1. Computer method for establishing an aid in diagnosis of a complex system of an aircraft (700, 800) comprising a plurality of sub-systems (705, 805), at least one sub-system of the said plurality of sub-systems comprising means for monitoring and notification of at least one detected event, this method being characterized in that:
- it uses a graph of feared events (200, 300) at least partially modeling the said complex system, the said graph of feared events comprising a plurality of peaks (205-250), each peak of the said plurality of peaks being connected by a logic implication relationship to at least one other peak of the said plurality of peaks, the said plurality of peaks comprising at least,one peak representing a feared event (205, 210); and
,one peak representing at least one element (245, 250) of the said complex system, the said at least one element being able to break down;
it comprises the following steps,receiving (500) at least one message of notification of occurrence of the said at least one detected event;
creating (510) a set of feared events, each feared event of the said set of feared events being associated with a peak of the said graph of feared events linked to the said at least one received notification message;
for each feared event of the said set of feared events, constructing (515), from the said graph of feared events, at least one logic expression leading to the said feared event, the said at least one logic expression being based on elements of the said complex system;
creating (520) at least one group of feared events of the said set of feared events, at least one element being common to two logic expressions linked to two separate feared events of the said at least one group, the logic expressions associated with the said feared events of the said at least one group representing a diagnosis relating to the said at least one detected event.
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Abstract
The invention in particular has as an object aid in diagnosis of a system of an aircraft, comprising a plurality of sub-systems at least one of which comprises means for monitoring and notification of at least one detected event, using graphs of feared events. After a message of notification of occurrence of the said detected event has been received (500), a set of feared events linked to this message is created (510) from the said graph of feared events, and logic expressions—using as operands elements of the system coherent with the feared events of the said set—are constructed (515) according to the logic links represented in the said graph of feared events. A group of feared events then is created (520) according to elements of the said logic expressions. The minimal vertexes of the logic expressions associated with the feared events of the said group are calculated and form a diagnosis of the said system.
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Citations
11 Claims
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1. Computer method for establishing an aid in diagnosis of a complex system of an aircraft (700, 800) comprising a plurality of sub-systems (705, 805), at least one sub-system of the said plurality of sub-systems comprising means for monitoring and notification of at least one detected event, this method being characterized in that:
- it uses a graph of feared events (200, 300) at least partially modeling the said complex system, the said graph of feared events comprising a plurality of peaks (205-250), each peak of the said plurality of peaks being connected by a logic implication relationship to at least one other peak of the said plurality of peaks, the said plurality of peaks comprising at least,
one peak representing a feared event (205, 210); and
,one peak representing at least one element (245, 250) of the said complex system, the said at least one element being able to break down; it comprises the following steps, receiving (500) at least one message of notification of occurrence of the said at least one detected event; creating (510) a set of feared events, each feared event of the said set of feared events being associated with a peak of the said graph of feared events linked to the said at least one received notification message; for each feared event of the said set of feared events, constructing (515), from the said graph of feared events, at least one logic expression leading to the said feared event, the said at least one logic expression being based on elements of the said complex system; creating (520) at least one group of feared events of the said set of feared events, at least one element being common to two logic expressions linked to two separate feared events of the said at least one group, the logic expressions associated with the said feared events of the said at least one group representing a diagnosis relating to the said at least one detected event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- it uses a graph of feared events (200, 300) at least partially modeling the said complex system, the said graph of feared events comprising a plurality of peaks (205-250), each peak of the said plurality of peaks being connected by a logic implication relationship to at least one other peak of the said plurality of peaks, the said plurality of peaks comprising at least,
Specification