FAULT LOCATION IN A REDUNDANT ACQUISITION SYSTEM

The present invention relates to a method for detecting and locating a faulty measurement-acquisition channel in an acquisition system (10) comprising two redundant acquisition channels (A, B) for measuring a physical quantity in an environment, the method using a computing unit (20) comprising a memory (24) storing a model (Mod) of the measured physical quantity, the method implementing the following steps: - (E1) detecting an error when a discrepancy (delta) between the measured values of the two channels (A, B) reaches a detection threshold (Th_D); - (E2) waiting to let the acquisition system undergo changes for a certain length of time (T); - (E3) locating the defective channel among the two channels (A, B), when the discrepancy (delta) in the measured values between the channels (A, B) reaches a location threshold (Th_L), said locating being performed on the basis of the comparison of the measured value of each of the channels (A, B) with a modelled value of the physical quantity, the location threshold