Diagnostic Operation Method and System for a Transport Vehicle Automatic or Semi-Automatic Access Device

A health status assessment system for a transport vehicle automatic or semi-automatic access device comprising at least one leaf suitable for being actuated by a kinematic chain including at least one motor supplied with electricity and having an associated angular position and/or rotation speed encoder and preferably at least one switch, the access device being movable between an open position and a closed position,

• comprising a computing unit including at least one processor, suitable for carrying out, for at least one actuating cycle of the kinematic chain between a first position among the open and closed positions and a second position, different from the first position, from among the closed and open positions, modules suitable for:
• during one said cycle, acquiring information relative to the kinematic chain comprising at least one piece of information representative of the electrical energy consumed by the motor, and/or position and/or speed information provided by said encoder and/or binary information indicating positions of switches of the actuating kinematic chain,
• dividing said cycle into a plurality of functional segments based on said acquired information,
• calculating at least one descriptor value per functional segment,
• establishing a health status diagnosis comprising a degradation detection as a function of at least part of said calculated descriptor values, the computing unit being suitable, if a degradation is detected, for:
• calculating one or several individual health indicators per functional segment,
• calculating at least one signature vector including at least some of the individual health indicators,
• estimating a similarity measurement between said signature vector and at least one reference signature vector representative of a degradation type, and
• identifying a type of degradation based on the estimate of a similarity measurement.