Method for simultaneously monitoring physiological and psychological fatigue in driving

Abstract

The invention relates to a method for simultaneously monitoring physiological and psychological fatigue in driving, which comprises the following steps of: installing a flexible pressure sensor arrayon a backrest of a driver seat, and monitoring the pressure distribution of each pressure sensor monitoring point when a driver clings to the backrest; recognizing the sitting posture of the driver through an extreme learning machine algorithm according to the pressure distribution condition, and monitoring the change frequency of the sitting posture of the driver; evaluating the physiological fatigue state through sitting posture comfort judgment and sitting posture change frequency statistics; in addition, extracting heart impact signals through noise reduction of monitored pressure sensor signals; and judging the psychological fatigue state according to the magnitude of the ballistocardiogram signal entropy. According to the method, the driving fatigue types are distinguished, so that guidance is provided for providing fatigue driving intervention control measures in a targeted manner.

Description

technical field [0001] The invention belongs to the field of fatigue driving monitoring and early warning, in particular to a method for simultaneously monitoring physiological and psychological fatigue during driving. Background technique [0002] Traffic accidents are considered to be one of the main reasons that endanger the lives of people in most countries in the world. According to the accident statistics of the traffic department, the number of deaths caused by traffic accidents in my country is no less than 500,000 each year. The annual traffic accidents caused by fatigue driving It accounts for at least 20%, and the resulting direct economic losses amount to millions. Fatigue during driving is mainly divided into two categories: (1) physiological fatigue caused by muscle static work and lack of sleep; (2) psychological fatigue caused by high-intensity work of the nerve center. In view of the above two causes of fatigue, driving fatigue is usually a mixed type of fat...

AI Technical Summary

Problems solved by technology

Regarding the above two causes of fatigue, driving fatigue is usually a mixed type of fatigue that is a combination of physical and psychological fatigue. In view of the complexity of the mechanism of driving fatigue, the current driving fatigue monitoring has little results in distinguishing fatigue types. Although various types of fatigue Both will lead to an increase in the tendency of driving violations and a reduction in driving ability, but the difference between the degree of influence on driving and the reduction in driving ability cannot be clearly distinguished

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