PROBLEM TO BE SOLVED: To determine tension (degree of a tension state) of a driver during vehicle driving in detail with a simple configuration.SOLUTION: A non-linear analysis part 110 of a driver state determination device 100 for determining tension of a driver during driving acquires a driving control input (control input concerning operation of an accelerator pedal, a brake pedal, a handle and so on), and calculates Lyapunov index relating to the control input by performing non-linear analysis processing. A frequency spectrum analysis part 120 calculates a power spectrum density of time-sequence data of Lyapunov index, and calculates an integral value of a prescribed low frequency band in the calculated power spectrum density. A driver condition determination part 130 determines whether tension of a driver is relevant to any one of an over-tension state, a moderate tension state and a tension shortage state by using the integral value of the prescribed low frequency band.SELECTED DRAWING: Figure 1
【課題】簡素な構成でドライバの車両運転時の緊張度(緊張状態の度合い)を詳細に判定する。【解決手段】ドライバの運転時の緊張度を判定するドライバ状態判定装置100の非線形解析部110が、ドライバの運転操作に係る運転操作量(アクセルペダル、ブレーキペダル、ハンドルなどの操作に係る操作量)を取得し、非線形解析処理を行うことによって運転操作量に関するリアプノフ指数を算出する。周波数スペクトル分析部120が、リアプノフ指数の時系列データのパワースペクトル密度を算出し、算出されたパワースペクトル密度における所定の低周波数帯域の積分値を算出する。ドライバ状態判定部130は、所定の低周波数帯域の積分値を使用して、ドライバの緊張度が、過緊張状態、適度な緊張状態、緊張不足状態のいずれであるかを判定する。【選択図】図1
DRIVER TENSION DETERMINATION DEVICE AND DRIVER TENSION DETERMINATION METHOD
ドライバ緊張度判定装置及びドライバ緊張度判定方法
2017-11-02
Patent
Electronic Resource
Japanese
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