Assessment Of Cerebral Oxygenation Response To Vibration In Drivers

In modern society,traffic accident is a crucial cause for abnormal death; fatigue driving is a vital cause for accidents, it becomes hot areas in research institutions and auto companies recently.So,exploring the mechanism for drving fatigue has a vital implication for preventing fatigue drving and ensuring people's livelihood life property safety.The researches concerning drving fatigue may proclaim not only the objective laws of fatigue during drving,but also reliable information for developing fatigue warning devices.Now,detective technologies have various shortbacks,therefore,seeking innovative and real—time detective methods is still the hot area.Oxygen is one of the most crucial substances for maintaining man's life, it's shortage is a vital cause of fatigue.Consequently,detecting the oxygenation has great implications for proclaiming the mechanism of fatigue and developing estimating technology.The study analyzed the vital cause for driving fatigue—the decrease of Chhbc2 in cerebral oxygenation induced by vehicle vibration.Hence,researching the variations of the cerebral oxygenation during vibration and probing the influence of vehicle vibration is vital for studying the effect of vehicle vibration on driving fatigue.Human body tissue's oxygenation may be monitored by near infrared spectroscopy,NIRS is capable of detecting human tissue's oxygenation undamagedly,continuously and in real time.It is proposed to detect the oxygenation of drivers in the status of fatigue in this study,and this method is a novel exploration in the field of fatigue driving.The primary job is as follows:(1) Drivers especially those who drive commercial vehicles are exposed to long term tension state of mind,they not only endure whole body vibration in different frequencies and amplitudes, but also operate various manual controls,such as handles,knobs,buttons,etc.The traffic environment in which drivers drive is complex,so drivers tend to feel highly tense and are liable to be tired.Meanwhile.drivers are exposed to vehicle vibrations of different frequencies.These vibrations is induced by vehicle and uneven road.The range of the frequencies and amplitudes of the vehicle vibrations is wide.The environment surrounding drivers is analyzed in this study to ascertain the amplitudes and frequencies of vibrations in the driving context.(2) This study researched drivers'cerebral oxygenation during vehicle vibration using NIRS.The basic principal for detecting cerebral oxygenation by NIRS is discussed in the study;the feasibility for detecting the cerebral oxygenaion during vehicle vibrations by NIRS is also analyzed.The aufbau principle and usage of TASH-100 NIRS blood oxygen nondestructive monitors is clarified in this study.(3) The cerebral oxygenation is detected by NIRS and analyzed by statistics and wavelet analysis,to proclaim the mechanism of cerebral oxygenation variability for broadening our knowledge about the prevention of driver fatigue and to analyze which frequency affluences the drivers'cerebral oxygenation most dramatically so as to provide some basis for design of vibration frequencies in vehicle design.(4) The paper researches the responses of cerebral oxygenation to vehicle vibration.Vehicle vibration in different amplitudes and frequencies has varied influences.This is manifested in that variation tendencies of Cub, CubO2 and TOI are different under different vibrations.And different content of the oxygenation has influence on human reaction.The paper plans to research vehicle vibration and response trend to it,to research the variation trend of oxygenation under vibration.So,we can confirm under which frequency the trend of oxygenation is the most significant.Thereby,we can confirm which frequency tends to cause fatigue,so as to provide some theoretical bases for prevention and remission of drivers'fatigue.