Vehicle speed sensor failure detection apparatus and method for an electronic control system
US7058490B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Feb 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B9/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle speed sensor failure detection apparatus for an electronic control system having a vehicle speed sensor for generating a vehicle speed information signal indicating vehicle speed information includes a vehicle behavior detection portion, a brake sensor and a failure detection portion. If vehicle speed information generated from the vehicle speed sensor is less than or equal to a vehicle speed reference level stored in the failure detection portion, the vehicle behavior information signal generated during a predetermined period of time has a portion exceeding the behavior reference level stored in the failure detection portion and the brake is in the OFF state, the failure detection portion generates a failure signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.