Tire pressure monitoring system with transition from stationary vehicle to moving vehicle conditions
US6832514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2003 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Feb 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0481
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure monitoring system monitors the periodic transmissions from each of the tire pressure monitoring sensors. If a particular sensor fails to report a counter is incremented. The count is compared to a limit, with a lower limit being set for when a vehicle is moving and a higher limit being set for when the vehicle is stationary. If the count exceeds the limit then it is determined that the particular transmitter is failing. When the vehicle transitions from stationary mode to moving mode the count is compared to limits. If the count is between two limits, then the count is reset to a lower number before the control monitors operation in moving mode. In this fashion, inaccurate identifications of a failed transmitter are reduced or eliminated by ensuring that the difference between the two limits does not result in an improper identification of a transmitter as failing when the vehicle transitions from stationary to moving mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.