Method and system for detection of driver drowsiness by an abrupt steering change following no steering movement
US4594583A · kind A · utility
46Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Feb 15, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/18
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A drowsiness alarm system for a vehicle detects and signals that the vehicle driver is drowsy on the basis of the duration during which no steering adjustments are made and the magnitude and speed of abrupt steering adjustments immediately following the non-steering period. Parameters compared to the magnitude and speed of the abrupt steering adjustments in order to recognize steering behavior reflecting drowsiness are adjusted in accordance with the duration of the non-steering period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.