Method for calibrating an acquisition chain of a braking device or braking system of at least one vehicle, in particular at least one railway vehicle

A method for calibrating an acquisition chain of a braking device or braking system of at least one vehicle, wherein the acquisition chain comprises:

• a sensor means arranged to measure a value of a physical quantity and to provide an analogue signal, the value of which is a function of the value of said physical quantity;
• an analogue-to-digital conversion means arranged to convert said analogue signal into a digital signal;
• control means arranged to determine the value of said physical quantity from said digital signal and according to a transfer function including at least one coefficient;
• said calibration method including the steps of:
• a) measuring, by means of a calibration means having a degree of accuracy greater than a predetermined threshold, a predetermined reference value of said physical quantity;
• b) measuring, by means of said acquisition chain, said predetermined reference value of said physical quantity;
• c) determining a measurement error of the acquisition chain by comparing the value measured by the calibration means with the value measured by the acquisition chain;
• d) modifying the at least one coefficient of said transfer function of the control means of the acquisition chain, on the basis of said comparison of the value measured by the calibration means with the value measured by the acquisition chain, so that said measurement error of the acquisition chain is minimized or rendered null.