Method for real-time monitoring of the operational state of a capacitive sensor

Abstract

A method is provided for real-time monitoring the operational state of a capacitive sensor capable of being mounted on a rotating machine, and connected to an electronic measuring module via a high frequency transmission line, the method comprising the steps of: generating within the electronic module a signal for compensating in capacitance parasitic effects from the transmission line and the sensor; generating within the electronic module a signal for compensating in conductance parasitic effects from the transmission line and the sensor; extracting a signal representative of the capacitance compensation and of a signal representative of the conductance compensation so as to determine an operating point of the sensor; and analyzing the operating point so as to check if it is located in a predetermined area.

Dependencies are inferred from the claim text.