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驾驶员心理紧张度与行车安全有直接的关系,而心率变化是心理紧张度的直接反应。利用生物反馈仪对驾驶员在不同海拔的心率变化进行系统研究和分析。以心率变异性低频功率与高频功率之比(LF/HF)作为疲劳评价指标,利用SPSS建立LF/HF与海拔的关系模型并对此进行研究。随着海拔的升高,驾驶员行车疲劳度会更加明显。驾驶疲劳度对驾驶员的心率产生的影响越明显,行车过程中越容易发生安全问题。
Driver psychological stress and driving safety have a direct relationship, and heart rate changes are the direct psychological reaction of stress. The biofeedback instrument was used to systematically study and analyze the driver’s heart rate changes at different altitudes. Based on the LF / HF ratio of heart rate variability (LF / HF) as fatigue evaluation index, the relation model between LF / HF and altitude was established by using SPSS and studied. As the altitude increases, the driver’s driving fatigue will be more obvious. The impact of driving fatigue on the driver’s heart rate is more obvious, the more likely safety problems occur during driving.