Patent ID: 7266444

Claim:
A driver load measuring device for measuring a load on a driver driving a vehicle accompanied by attitude changes, said driver load measuring device comprising: angular velocity detecting means for periodically detecting an angular velocity of said vehicle driven by said driver to which said load is applied; angular velocity predicting means for predicting a value for said angular velocity at an n-th timing from values for said angular velocity at the previous timings before said n-th timing, according to time-series data of said angular velocity detected above; means for obtaining an error between said predicted value and said detected value for said angular velocity at said n-th timing; and load calculating means for calculating said load according to a distribution of said errors in a predetermined time periods, wherein said load calculating means comprises: means for obtaining a percentile value α at a predetermined probability of said errors; means for setting a plurality of ranges (cells) discrete from said percentile value α at a predetermined rate, according to said percentile value α; means for classifying all of said errors into said plurality of cells; and means for obtaining an entropy of said angular velocity according to the results of classification of said errors; said load on said driver being represented by said entropy of said angular velocity.