Device for measuring the electrical resistance of an element

Abstract

The present invention relates to a device (1) for measuring the resistance of an element (2), in particular an aircraft structural element, characterised in that the device (1) comprises:—a digital control circuit (5) configured, on the one hand, to control the value of a measurement current (IR) to be injected into the element to be tested (2) and, on the other hand, to determine, from the voltage value (VR) generated by the measurement current (IR), the resistance value of the element (2) being tested;—a digital-to-analogue conversion stage (8) configured to convert a digital signal into an analogue signal and vice versa;—an analogue measurement circuit (7) connected to the digital control circuit (5) via the converters and configured to: —generate a measurement current (IR) from a digital setpoint (Cm) originating from the digital control circuit (5); ·measure an analogue value of the voltage (VR) generated by the measurement current (IR); characterised in that the device (1) comprises a reference voltage source (3) connected to the conversion stage (8), the conversion stage (8) being configured to use the voltage value (Vref) generated by the reference source (3) for the conversion:—of digital signals (Cm), such as the digital setpoint (Cm) that controls the generation of a measurement current (IR) by the analogue measurement circuit (7), originating from the digital control circuit (5), into analogue signals (VC) intended for the analogue measurement circuit (7); and—of analogue signals (VR»), such as the voltage value (VR) measured across the terminals of the element (2) being tested, originating from the measurement circuit (7), into digital signals (LUext) intended for the digital control circuit (5).

Dependencies are inferred from the claim text.