System for monitoring a measurement chain of a turbojet engine

摘要

A method and a system for monitoring a measuring chain arranged to collect over time measures relating to a turbojet engine of an aircraft, the system including a processor configured to build a health indicator of the measuring chain based on counting transitions between successive health words defining a validity score of corresponding successive measures.

主权项

1. A system for monitoring a measuring chain arranged to collect measurements relating to an aircraft turbojet engine, the system comprising:
circuitry configured to: build health words by using likelihood and deviation tests between redundant paths of the measuring chain, the likelihood and deviation tests being defined according to parametering thresholds specifically selected for monitoring the measuring chain; build a health indicator of the measuring chain based on counting transitions between successive health words defining a validity score for corresponding successive measurements to detect or predict degradation that could lead to failure of the measuring chain; and acquire the measurements collected by the measuring chain, wherein the circuitry is configured to change values of the parametering thresholds as a function of an observable measured by the measuring chain.