Intermittent contact detection on motor sensor

A control method of a measurement of a physical quantity supplied by a first turbomachine sensor, by means of a first communication channel, and by a second turbomachine sensor, by means of a second communication channel, the method being executed by a computer of the turbomachine, and also comprising the steps of:

• acquisition, for a given acquisition window, of a first signal representative of the measurement from the first communication channel, and of a second signal representative of the measurement from the second communication channel, the signals being acquired in the form of a sample of points, spaced apart by a given period,
• determination of a validity status of each of the acquired signals,
• transmission of a signal to be processed which is selected:
• equal to the average between the acquired signals if the acquired signals are both determined valid,
• equal to the first signal acquired if:
• the first signal acquired is determined valid, and
• the second signal acquired is determined invalid, and
• equal to the second signal acquired if:
• the first signal acquired is determined invalid, and
• the second signal acquired is determined valid,
• wherein the control method comprises the steps of:
• calculation of a standard deviation between the different points of the acquisition window of an acquired signal,
• comparison of the calculated standard deviation at a standard deviation threshold,
• the signal being determined valid if the calculated standard deviation is less than the standard deviation threshold, and invalid if not, the value of an increment being augmented by 1 if the corresponding signal is determined invalid and being unchanged if the corresponding signal is determined valid.