PROBLEM TO BE SOLVED: To provide a vehicle safe driving promotion method and a vehicle safe driving promotion device that: reduce both non-alarm and incorrect alarm for a case in which a driver does not look ahead carefully; suppress botheration with respect to a driver's alarm; improve reliability; and promote safe driving.SOLUTION: A vehicle safe driving promotion method comprises: obtaining an angle θ of the direction of a driver's face in a horizontal direction, with a traveling direction of a vehicle 10 as a reference; then, storing the obtained angle θ in chronological order; then, converting a time sequence of the angles θ, during a predetermined period ta traced back from a current time t, into a power spectrum; then, calculating an integrated value IVx in which a function g{PSD(f)} based on a power spectral density PSD in a frequency range fa is frequency-integrated; then, determining whether the integrated value IVx is an alarm issuing threshold IVa or more; and then, issuing an alarm when the integrated value IVx is the alarm issuing threshold IVa or more.SELECTED DRAWING: Figure 1
【課題】運転者の前方不注視に対する警報に関して未警報及び誤警報の両方を低減し、運転者の警報に対する煩わしさを抑制すると共に信頼性を向上して、安全運転を促進する車両の安全運転促進方法及び車両の安全運転促進装置を提供する。【解決手段】車両10の進行方向を基準にして左右方向の運転者の顔向きの角度θを取得し、次いで、取得した角度θを時系列で記憶し、次いで、現時刻tから過去一定期間taにおける角度θの時系列をパワースペクトルに変換し、次いで、周波数範囲faにおけるパワースペクトル密度PSDに基づいた関数g{PSD(f)}を周波数積分した積分値IVxを算出し、次いで、その積分値IVxが警報発令閾値IVa以上であるか否かを判定し、次いで、積分値IVxが警報発令閾値IVa以上の場合に、警報を発令する。【選択図】図1
VEHICLE SAFE DRIVING PROMOTION METHOD AND VEHICLE SAFE DRIVING PROMOTION DEVICE
車両の安全運転促進方法及び車両の安全運転促進装置
2016-12-08
Patent
Electronic Resource
Japanese
VEHICLE SAFE DRIVING PROMOTION METHOD AND VEHICLE SAFE DRIVING PROMOTION DEVICE
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