Method and apparatus for detecting wheel motion in a tire pressure monitoring system
US7104123B2 · kind B2 · utility
3Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Sep 8, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0408
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for detecting motion of a wheel comprising tyre. The apparatus comprises a pressure sensor for measuring the tyre pressure and generating a signal corresponding to the measured tyre pressure, and means for detecting a component of said signal that corresponds to, or is generated by, vibrations of the tyre. Upon detection of the signal component, the apparatus determines that the wheel is in motion. The detecting means may arranged to detect an audio signal component or signal components having a frequency in the range 200 Hz to 300 Hz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.