Direction detection for a vehicle
US4555761A · kind A · utility
21Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1983 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Feb 9, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and method for detecting the running direction of an automotive vehicle includes terrestrial magnetic field direction detection, vehicle steering angle detection, and response to the signals of these detectors for producing the vehicle running direction signal. In a computer, or equivalent circuitry, occurrence of abnormalities of the terrestrial magnetic field is decided when the relationship between the change in the vehicle running direction and the change in the steering angle does not satisfy a predetermined requirement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.