Experimental research on biological signal of muscle fatigue under dynamic driving environment

To evaluate human comfort under different dynamic driving environment,the IEMG and frequency-domain eigenvalues of SEMG signal under different accelerations were calculated in the simulated dynamic driving environment.Based on experimental datum,the change curves between the partial MF indexes and the acceleration,the time were plotted,including the biceps brachii,erector spinae and biceps femoris.Besides,the characteristic of muscle oxygen content and brain oxygen variation were recorded by NIRS.Meanwhile subjective evaluations of human body comfort and fatigue in different dynamic driving environment were given respectively.The experimental results show that different dynamic driving environment has direct influence on human muscle oxygen content and brain oxygen,further influence on human body comfort and fatigue.Hence the results provide impersonal and efficient references for evaluating the operation comfort and design of human-vehicle interface under dynamic driving environment.