Method and system for determining a respective geographical position of defects of a road surface

Abstract

Method and system (1) for determining a respective geographical position (GP) of defects (RD) of a road surface (900), the system (1) comprising a first acquisition system (2) structured to acquire over time a signal (S) representative of a motion of a crown portion (30) of a tyre (3) of a vehicle (99), a second acquisition system (20) structured to acquire information representative of a plurality of geographical positions (Loc) of the vehicle (99) along a path, and a processing unit (8) programmed to receive the signal (S) and the information representative of the plurality of geographical positions (Loc) and to perform the following steps of the method: dividing the signal (S) into a set of signal portions (SP); for each signal portion (SP), calculating a respective value of a parameter (KPI) representative of an average power of the signal; comparing each respective value of the parameter (KPI) with a threshold value (TS); selecting each signal portion (SP) corresponding to a respective value of the parameter (KPI) greater than the threshold value (TS), to obtain a set of candidate signal portions (SP'); correlating each candidate signal portion (SP') to at least one respective geographical position (Loc) and determining a respective geographical position (GP) of a respective defect (RD) for each candidate signal portion (SP') as the at least one respective geographical position (Loc) correlated to the candidate signal portion (SP').

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