Plateau driving fatigue state detection method based on steering wheel index

The invention discloses a plateau driving fatigue state detection method based on a steering wheel index, and the method comprises the steps: carrying out the principal component analysis of an electroencephalogram signal sample entropy and a heart rate variation coefficient, obtaining a comprehensive evaluation index CIDF representing the fatigue state of a driver, carrying out the clustering analysis and optimal binning of a CIDF value, and obtaining a CIDF value; obtaining a plateau driving fatigue threshold value based on cardiac and physiological indexes and a fatigue state grade of the driver in each time window; setting the same time window length, extracting time domain features and frequency domain features of a plurality of pieces of steering wheel angle data, and screening out feature indexes with significant differences between different driving fatigue states as driving fatigue steering wheel index characterization parameter values by using single-factor variance analysis and collinearity test; a