Wakefulness estimating apparatus and method
US7084773B2 · kind B2 · utility
17Cited by
11References
6Claims
0Family size
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Key dates
| Filing date | Aug 24, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jan 8, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/18
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
When a steering angle dakaku is equal to or smaller than ±15° (S22), the steering angle dakaku is integrated to calculate an integrated value dakaku_sum (S24). When the integrated value dakaku_sum is within a set range (S25, S26), a road-shape-based wakefulness correction coefficient R_hosei is set at 0.5 (S28). Any erroneous determination of wakefulness attributable to a road shape is prevented by correcting wakefulness H for evaluating wakefulness by decreasing it using the road-shape-based wakefulness correction coefficient R_hosei.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.