发明名称 |
MENTAL FATIGUE DETECTING METHOD AND DEVICE |
摘要 |
A mental fatigue detection device for detecting mental fatigue without arbitrariness using a flickering light includes: a light-emitting unit (1) for emitting a flickering visible light; a lighting unit (2) for emitting an infrared ray; an imaging unit (3) for taking an infrared image; and a control unit (4); wherein: the light-emitting unit (3) presents a test subject a flickering visible light with its frequency changing monotonically and stepwise; the imaging unit (3) captures an image of a region containing an eye of the test subject; the control unit (4) finds a pupil diameter of an image of the eye contained in each frame image of the captured image as time-series data, finds a threshold frequency of the test subject at the time of the measurement based on the variation in the pupil diameter and compares the threshold frequency with a threshold frequency when the test subject has no mental fatigue, thereby determining that whether the test subject has mental fatigue.
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申请公布号 |
US2010085539(A1) |
申请公布日期 |
2010.04.08 |
申请号 |
US20090624067 |
申请日期 |
2009.11.23 |
申请人 |
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCEAND TECHNOLOGY |
发明人 |
HARADA NOBUYOSHI;IWAKI SUNAO |
分类号 |
A61B3/11;A61B3/14;A61B13/00 |
主分类号 |
A61B3/11 |
代理机构 |
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地址 |
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