INFORMATION PROCESSOR SYSTEM FOR MONITORING A COMPLEX SYSTEM

• US 20150142366A1
• Filed: 05/22/2013
• Published: 05/21/2015
• Est. Priority Date: 05/28/2012
• Status: Active Grant

• Current Assignee: Safran Aircraft Engine Company
• Original Assignee: Snecma (Safran SA)
• Inventors: Le Gonidec, Serge, Berechet, Ion, Malikov, Dimitri, Berechet, Stefan
• Granted Patent: US 10,393,624 B2
• Time in Patent Office: Days
• US Class Current: 702/108
• CPC Class Codes: G01M 15/00 Testing of engines
• CPC Class Codes: G05B 23/0218 characterised by the fault detection method dealing with either existing or incipient faults
• CPC Class Codes: G05B 23/0262 Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
• CPC Class Codes: G05B 23/0275 Fault isolation and identification, e.g. classify fault; estimate cause or root of failure
• CPC Class Codes: G05B 23/0278 Qualitative, e.g. if-then rules; Fuzzy logic; Lookup tables; Symptomatic search; FMEA

Abstract

An information processor system for monitoring a complex system and including a mechanism receiving at least one piece of event detection information associated with a detection time and a mechanism generating at least one remanent confidence level value that decreases over time starting from the detection time.

Claims

1-13. -13. (canceled)

14. An information processor system for monitoring a complex system comprising:

means for receiving at least one piece of event detection information associated with a detection time; and

means for generating at least one remanent confidence level value that decreases over time starting from the detection time.

15. A processor system according to claim 14, wherein the remanent confidence level value is associated with at least one failure magnitude value selected as a function of a failure magnitude value associated with the detection time.

16. A processor system according to claim 14, wherein the remanent confidence level value is associated with a fault flag associated with the piece of event detection information.

17. A processor system according to claim 14, further comprising means for generating at least two remanent confidence level values, each associated with a malfunction magnitude value, each of the at least two remanent confidence level values varying independently of the other.

18. A processor system according to claim 14, further comprising means for generating at least two remanent confidence level values each associated with a malfunction magnitude value, the remanent confidence level value among the at least two remanent confidence level values associated with the highest malfunction magnitude value or the lowest malfunction magnitude value being reset to zero if the other remanent confidence level value is not zero.

19. A processor system according to claim 14, wherein, starting from the detection time, the remanent confidence level value decreases over time from a value that depends on an initial confidence level associated with the event detection message.

20. A processor system according to claim 19, wherein, for the remanent confidence level value being a raw value, the system further comprises means for generating an integrated remanent confidence level value of value at the detection time that is equal to the initial confidence level combined with the raw remanent confidence level value at the detection time, and of value at times that are not detection times that is zero.

21. A processor system according to claim 14, wherein, for the remanent confidence level value being a raw value, the system further comprises means for generating an integrated remanent confidence level value of value at all times equal to the initial confidence level combined with the raw remanent confidence level value.

22. A processor system according to claim 20, wherein the initial confidence level and the raw remanent confidence level value are combined to give the integrated remanent confidence value by an addition.

23. A processor system according to claim 14, wherein the piece of detection information associated with a detection time is included in a failure message including at least a failure time, an initial confidence level, and a failure identifier.

24. A processor system according to claim 14, wherein a duration from which the remanent confidence level value is zero may be set by a user, for a single fault flag, or for a plurality of fault flags.

25. A processor system according to claim 14, wherein a decreasing relationship may be set by a user for the remanent confidence level value, for a single fault flag, or for a plurality of fault flags.

26. An information processing method for monitoring a complex system, the method comprising:

receiving at least one piece of event detection information associated with a detection time; and

generating at least one remanent confidence level value that decreases over time starting from the detection time.