System and method for performing auto-location of a tire pressure monitoring sensor arranged with a vehicle wheel using confidence interval analysis and rollback events
US9333814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Jan 4, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0489
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Auto-location systems and methods of tire pressure monitoring sensor units arranged with a wheel of a vehicle detect a predetermined time (T1) when a wheel phase angle reaches angle of interest using a rim mounted or a tire mounted sensor. The systems and methods transmit a radio frequency message associated with a wheel phase angle indication. The wheel phase angle indication triggers wheel phase and/or speed data such as ABS data at the predetermined time (T1) to be stored. A correlation algorithm is executed to identify the specific location of a wheel based on the wheel phase and/or speed data at the predetermined time (T1). TPM sensor parameters from a tire pressure monitoring sensor unit are assigned to the specific location of the wheel based on a confidence interval width analysis of the ABS data at the predetermined (T1). The confidence interval width analysis identifies the specific location of the wheel whose ABS sensor shows a lowest confidence interval width as a result of a normal distribution pattern or similar pattern. The confidence interval width analysis may calculate a weighted cumulative confidence interval width for the ABS data which experience rollback event…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.