System and method for detecting machine movement and speed sensor failure
US8214101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Apr 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for indirectly detecting a movement of a machine and a failure of a speed sensor is disclosed. The method may include receiving an operator input signal, and determining a first factor based on the operator input signal. The method may also include measuring a machine operation parameter, and determining a second factor based on the machine operation parameter. The method may further include identifying a movement of the machine if the first factor is out of a first threshold range and the second factor is out of a second threshold range for at least a first threshold length of time. The method may also include determining a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.