Tpms with acoustic sensor
AssigneeNexen Tire America, Inc.
InventorAaron Neumann
Life of this patent
Estimating the term…
Abstract
An acoustic sensor for coupling with a tire pressure monitoring system to generally detect an acoustic signal corresponding to a noise generated by a tire as the tire travels across a road surface. The detected signal can be used by various vehicle system to generally determine tire tread wear or depth and for use in active noise cancelling within the vehicle.
Claims20
A tire pressure monitoring system, the tire pressure monitoring system including a sensor adapted to sense a pressure of a tire mounted on a wheel and in communication with a vehicle, the tire pressure monitoring system comprising:
- at least one acoustic sensor, the at least one acoustic sensor coupled to the tire pressure monitoring system and configured to detect an acoustic signal generated by the tire as the tire contacts a road surface.
A tire pressure monitoring system coupled to a vehicle and configured to detect a pressure of a tire mounted on the vehicle, the tire pressure monitoring system comprising:
- at least one acoustic sensor coupled to the tire pressure monitoring system and configured to detect a noise of the tire during operation of the vehicle as the tire contacts a road surface;
- and
- a controller, the, the controller coupled to the tire pressure monitoring system and the acoustic sensor and configured to process a detected at least one acoustic sensor data stream for transmission to the vehicle through a transmitter.
A method for detecting a worn tire with a tire pressure monitoring system in a vehicle, the method comprising the steps of:
- detecting a noise of the tire from a position at an interior of the tire with at least one acoustic sensor;
- measuring the detected noise;
- determining if the measured noise is at a frequency corresponding to a predetermined wear condition;
- and
- transmitting the predetermined wear condition to a warning system of the vehicle.
Dependencies are inferred from the claim text.