CHAINE D'ACQUISITION D'AU MOINS UNE GRANDEUR PHYSIQUE NOTAMMENT POUR UN SYSTEME AVIONIQUE EMBARQUE CRITIQUE, ET PROCEDE D'ACQUISITION ASSOCIE

摘要

The present invention relates to a system (10) for acquisition of at least one physical variable, in particular for a critical on-board avionics system, comprising: - a sensor (12) for measuring the physical variable; - an acquisition channel (14) receiving an analogue signal corresponding to the physical variable measured by the sensor (12) and transforming this analogue signal into a corresponding digital signal, at least some of these transformations being able to be carried out with loss of accuracy; - self-test means (20) for checking the integrity of the acquisition channel (14) and generating a self-test result. The system further comprises means (20) for analysis of the self-test result in order to determine an operating mode of the acquisition channel (10), and for activating the operation of means (22) for correction of the signal delivered by the channel (14).