Patent Number: 7,762,129

Title: Tire tread detection and measurement of physical variables of a tire on a moving vehicle

Abstract: A tire tread sensing system includes a magnetic field sensor and a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread. The magnetic field sensor is configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, and the magnetic field strength is indicative of a tire tread depth. Alternatively, the particles comprise alternating permanent magnets embedded in a tread portion of a tire.

Inventors: Niklas; Alfred (Poing, DE), Hammerschmidt; Dirk (Villach, AT)

Assignee: Infineon Technologies AG

International Classification: B60C 23/02 (20060101)

Expiration Date: 7/27/12018