Device for detecting an abnormality of a rotation sensor
US4805447A · kind A · utility
9Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1988 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/416
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An abnormality detecting device for detecting a breakage in wiring of a rotation sensor. When the rotating acceleration calculated based on signals from the rotation sensor is greater than a predetermined acceleration value and the rotating speed calculated based on signals from the rotation sensor is zero, a detection signal is put on a wire connected to the rotation sensor. A change in the level of the detection signal is checked for determining whether the rotation sensor is abnormal, i.e., whether there is a breakage in the rotation sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.