To provide a drowsy driving alarm system capable of accurately determining a driver's drowsiness level and inhibiting erroneous alarm output.SOLUTION: A drowsy driving alarm system (1) includes: a camera (2) that images a driver; a steering angle sensor (6) that detects a behavior of a vehicle; a driver image drowsiness level determination unit (16) that determines a drowsiness level and its degree of reliability on the basis of a driver image; a vehicle behavior drowsiness level determination unit (18) that determines a drowsiness level and its degree of reliability on the basis of the behavior of the vehicle; a comprehensive drowsiness level determination unit (20) that determines a comprehensive drowsiness level and comprehensive degree of reliability on the basis of the driver image drowsiness level and its degree of reliability and the vehicle behavior drowsiness level and its degree of reliability; and an alarm level designation unit (22) that designates an alarm level on the basis of a frequency distribution of the comprehensive drowsiness levels detected within a determination time, and corrects the frequencies of the comprehensive drowsiness levels so that the frequency of the comprehensive drowsiness level becomes low as the comprehensive degree of reliability of the comprehensive drowsiness level is low.SELECTED DRAWING: Figure 6
【課題】ドライバの眠気レベルをより正確に判定し、誤った警報出力を抑制することができる居眠り運転警報装置を提供する。【解決手段】居眠り運転警報装置(1)は、ドライバを撮影するカメラ(2)と、車両の挙動を検出する操舵角センサ(6)と、ドライバ画像に基づき眠気レベルとその信頼度を判定するドライバ画像眠気レベル判定部(16)と、車両の挙動に基づき眠気レベルとその信頼度を判定する車両挙動眠気レベル判定部(18)と、ドライバ画像眠気レベル及びその信頼度と、車両挙動眠気レベル及びその信頼度とに基づき、総合眠気レベル及び総合信頼度を決定する総合眠気レベル決定部(20)と、判定時間内の総合眠気レベルの頻度分布に基づき警報レベルを設定し、総合眠気レベルの総合信頼度が低いほど当該総合眠気レベルの頻度が低くなるように、総合眠気レベルの頻度の補正を行う警報レベル設定部(22)を備える。【選択図】図6
DROWSY DRIVING ALARM SYSTEM
居眠り運転警報装置
2019-01-31
Patent
Electronic Resource
Japanese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme |
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