2014 Fiscal Year Final Research Report
Development of Road Surface Evaluation Method based on Physiological Fatigue by Unconstrained Pulse Wave Monitoring
| Project/Area Number |
25870026
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil engineering materials/Construction/Construction management
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 路面評価 / 心拍変動 / 脈波 / 生体疲労 / 平坦性 / ドライビングシミュレータ / 生体情報・計測 / 土木情報学 |
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| Outline of Final Research Achievements |
Although road users are exposed to vehicle vibrations induced by road roughness, the effect of surface characteristics to physiological fatigue of vehicle drivers is still unknown. This study examined a new evaluation method of surface roughness in terms of “passive fatigue” that is the fatigue caused by the roughness based on an unconstrained pulse wave monitoring. For this purpose we conducted a driving experiment to investigate the effect of passive fatigue on drivers by use of a driving simulator. The frequency analysis of heart rate variability from pulse waves was employed to monitor the behavior of high and low frequency components (HF and LF respectively) of the waves. According to the result the ratio of LF and HF (LF/HF) enables us to monitor the long term mental stress that correlates with the passive fatigue. On the other hand HF is effective in evaluating ride and comfort of a vehicle, which is comparatively occurred in short duration.
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| Free Research Field |
道路工学，交通工学
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