Capacitive measurement of tire deformation

Details Capacitive measurement of tire deformation Capacitive measurement of tire deformation

2007-09-19

2009-06-09

Allen, Andre J (Department: 2855)

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

Reexamination Certificate

active

07543491

ABSTRACT:
The invention relates to systems and methods for detecting and monitoring tire deformation. In one embodiment, a tire deformation detection system comprises a first electrode, a second electrode, circuitry, and a central control unit. The first electrode is coupled to an interior surface of a tire. The second electrode is coupled to an interior surface of the tire and configured with the first electrode to form a first capacitor. The circuitry is configured to measure a first capacitance of the first capacitor. The central control unit is configured to detect a deformation of the tire based at least in part on the first capacitance.

REFERENCES:
patent: 2005/0016649 (2005-01-01), Poulbot et al.
patent: 2007/0272006 (2007-11-01), Demaie et al.
patent: 1186853 (2002-03-01), None
patent: 1526385 (2006-08-01), None
patent: 2005108123 (2005-11-01), None
Matsuzaki et al., Wireless strain monitoring of tires using electrical capacitance changes with an oscillating circuit, Sensors and Actuators A 119, 2005, 323-331. Elsevier (9 pages).
Sergio et al., On road tire deformation measurement system using a capacitive-resistive sensor, IEEE, 2003, 1059-1063, 0-7803-8133-5/03 (5 pages).

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