Brake pad wear detection and warning for autonomous driving vehicles
AssigneeApollo Autonomous Driving USA LLC
InventorsBaoping Yuan, Yaoming Shen
Life of this patent
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Abstract
Sound signals are received by a plurality of microphones disposed on a top of an ADV. An analysis of the sound signals is performed based on a spectrum and a vibration intensity of the sound signals. A wheel which the sound signals come from and a thickness of a brake pad of the wheel is determine based on the analysis of the sound signals. A brake pad wear degree of the brake pad and how long the ADV can run with the brake pad within a safety range is determined. A warning message indicating warning information based on the brake pad wear degree is transmitted.
Claims20
A computer-implemented method for operating an autonomous driving vehicle (ADV), the method comprising:
- receiving sound signals by a plurality of microphones disposed on a top of the ADV;
- performing an analysis of the sound signals based on a spectrum and a vibration intensity of the sound signals;
- determining a wheel which the sound signals come from and a thickness of a brake pad of the wheel based on the analysis of the sound signals;
- determining a brake pad wear degree of the brake pad and how long the ADV can run with the brake pad within a safety range based on the thickness of the brake pad;
- and
- transmitting a warning message indicating warning information based on the brake pad wear degree.
A non-transitory machine-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:
- receiving sound signals by a plurality of microphones disposed on a top of an autonomous driving vehicle (ADV);
- performing an analysis of the sound signals based on a spectrum and a vibration intensity of the sound signals;
- determining a wheel which the sound signals come from and a thickness of a brake pad of the wheel based on the analysis of the sound signals;
- determining a brake pad wear degree of the brake pad and how long the ADV can run with the brake pad within a safety range based on the thickness of the brake pad;
- and
- transmitting a warning message indicating warning information based on the brake pad wear degree.
A data processing system, comprising:
- a processor;
- and
- a memory coupled to the processor to store instructions, which when executed by the processor, cause the processor to perform operations, the operations including
- receiving sound signals by a plurality of microphones disposed on a top of an autonomous driving vehicle (ADV);
- performing an analysis of the sound signals based on a spectrum and a vibration intensity of the sound signals;
- determining a wheel which the sound signals come from and a thickness of a brake pad of the wheel based on the analysis of the sound signals;
- determining a brake pad wear degree of the brake pad and how long the ADV can run with the brake pad within a safety range based on the thickness of the brake pad;
- and
- transmitting a warning message indicating warning information based on the brake pad wear degree.
Dependencies are inferred from the claim text.