Tire damage detection system and method

A tire damage detection system comprising:

• an acquisition device coupled to a vehicle bus of a motor vehicle equipped with two or more wheels fitted with tires, and configured to acquire, from the vehicle bus, a signal indicative of a speed of a wheel of the motor vehicle and output quantities indicative of the wheel speed;
• and
• a processing system configured to
• store a predefined tire damage model that includes a set of predefined thresholds related to different reference wheel speed values and a set of predefined time lengths related to different reference wheel speed values,
• receive, from the acquisition device, the quantities indicative of the wheel speed,
• analyse the wheel speed via a sliding time window,
• select one of the predefined thresholds and one of the predefined time lengths based on a given reference wheel speed value that is a wheel speed value, or an average of wheel speed values, immediately preceding and/or following the third sliding time window, wherein said sliding time window has the predefined time length selected,
• detect a maximum value and a minimum value of the wheel speed within the sliding time window,
• compute a difference between said maximum and minimum values,
• compute a ratio of the difference between said maximum and minimum values to the given reference wheel speed value, and
• detect a potential damage to a tire of the wheel of the motor vehicle if the ratio of the difference between said maximum and minimum values to the given reference wheel speed value exceeds the selected predefined threshold.

A method of tire damage detection, comprising:

• acquiring, via a vehicle bus of a motor vehicle equipped with two or more wheels fitted with tires, a signal indicative of a speed of a wheel of the motor vehicle;
• storing a predefined tire damage model that includes a set of predefined thresholds related to different reference wheel speed values and a set of predefined time lengths related to different reference wheel speed values;
• analysing the wheel speed via a sliding time window;
• selecting one of the predefined thresholds and one of the predefined time lengths based on a given reference wheel speed value that is a wheel speed value, or an average of wheel speed values, immediately preceding and/or following the third sliding time window, wherein said sliding time window has the predefined time length selected,
• detecting a maximum value and a minimum value of the wheel speed within the sliding time window;
• computing a difference between said maximum and minimum values;
• computing a ratio of the difference between said maximum and minimum values to the given reference wheel speed value;
• and
• detecting a potential damage to a tire of the wheel of the motor vehicle if the ratio of the difference between said maximum and minimum values to the given reference wheel speed value exceeds the selected predefined threshold.

A cloud computing system wirelessly and remotely connected to an acquisition device of a motor vehicle equipped with two or more wheels fitted with tires, and configured to

• store one or more predefined tire damage models that each include a set of predefined thresholds related to different reference wheel speed values and a set of predefined time lengths related to different reference wheel speed values;
• acquire, from the acquisition device, quantities indicative of a speed of a wheel of the motor vehicle;
• analyse the wheel speed via a sliding time window;
• select one of the predefined thresholds and one of the predefined time lengths based on a given reference wheel speed value that is a wheel speed value, or an average of wheel speed values, immediately preceding and/or following the third sliding time window, wherein said sliding time window has the predefined time length selected;
• detect a maximum value and a minimum value of the wheel speed within the sliding time window;
• compute a difference between said maximum and minimum values;
• compute a ratio of the difference between said maximum and minimum values to the given reference wheel speed value;
• and
• detect a potential damage to a tire of the wheel of the motor vehicle if the ratio of the difference between said maximum and minimum values to the given reference wheel speed value exceeds the selected predefined threshold.