Vehicle safety system with advanced tire monitoring
AssigneeFord Global Technologies, LLC
InventorsChristopher R. Bujak, Manoharprasad K. Rao, Mark A. Cuddihy
Life of this patent
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Abstract
A control system (11) for a vehicle (10) includes vehicle dynamics sensors (35-47) providing a vehicle dynamics signal. Tire monitoring system sensors (20) in each wheel generate tire signals including temperature, pressure and acceleration data. A controller (26) communicates with the tire monitoring system sensors (20) and at least one vehicle dynamics sensor, and generates a tire abnormality value as a function of the multi-axis acceleration data of the tire signals. Tire multi-axis acceleration data is also used to detect a roadway departure, and an oversteer or understeer event.
Claims31
A safety system for a vehicle comprising:
- a tire sensor located within each wheel of the vehicle and each generating a tire signal comprising pressure, temperature and multi-axis acceleration data;
- at least one vehicle dynamics sensor providing a vehicle dynamics signal;
- and
- a controller communicating with each tire sensor and the at least one vehicle dynamics sensor, the controller, in response to the vehicle dynamics signal;
- generating a tire abnormal state value as a function of the multi-axis acceleration data of the tire signal and a comparison of frequency response characteristics of the tire signal;
- and
- transmitting the tire abnormal state to at least one vehicle system controller.
A safety system for a vehicle comprising:
- a tire sensor located within each wheel of the vehicle and generating a tire signal comprising pressure, temperature and multi-axis acceleration data;
- at least one vehicle dynamics sensor providing a vehicle dynamics signal;
- and
- a controller communicating with each tire sensor and the at least one vehicle dynamics sensor, the controller, in response to the vehicle dynamics signal, generating a roadway departure signal as a function of the multi-axis acceleration data of the tire signals as a comparison of frequency and amplitude response characteristics of the tire signal;
- and
- transmitting the roadway departure signal to at least one vehicle system controller.
A safety system for a vehicle comprising:
- a tire sensor located within each wheel of the vehicle and generating a tire signal comprising pressure, temperature and multi-axis acceleration data;
- at least one vehicle dynamics sensor providing a vehicle dynamics signal;
- a brake system for applying a braking torque to each of the vehicle wheels in response to a brake signal;
- and
- a controller communicating with each tire sensor and the at least one vehicle dynamics sensor, the controller, in response to the vehicle dynamics signal, generating a lateral tire force signal for each of the vehicle wheels as a function of the respective multi-axis acceleration data of the tire signal as a comparison of frequency response characteristics of the tire signal, generating an oversteer/understeer signal as a function of the lateral tire force signal, and transmitting the brake signal to the brake system in response to the oversteer/understeer signal.
Dependencies are inferred from the claim text.