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针对飞机驾驶舱显示界面脑力负荷的客观判别预测问题,综合采用事件相关电位(ERP)、心电图(ECG)和眼电图(EOG)3类生理测量技术,结合主观测评法和绩效测评法,在同一飞行实验任务中开展脑力负荷的实验测量与数学建模研究。实验结果表明:随着脑力负荷的增加,ERP测量技术中的失匹配负波(MMN)成分的峰值幅度(在Fz电极处)显著增加,P3a成分的峰值(在Fz电极处)显著降低;ECG测量技术中的心率变异性指标全部窦性心搏RR间期(简称RR间期)的标准差(SDNN)的数值显著降低;EOG测量技术中的眨眼次数显著降低。在此基础上,基于Bayes判别方法构建了脑力负荷判别预测生理综合评估模型,并将生理综合评估模型判别结果与NASA任务负荷指数(NASA_TLX)量表判别结果进行了比较,生理综合评估模型判别结果略高于NASA_TLX判别结果。该模型为飞机驾驶舱显示界面脑力负荷状态的客观、实时判定和预测提供了一种新的方法,同时也为中国正在研发的新型战斗机和大型客机驾驶舱显示界面中的人为因素适航审定工作提供了新的符合性验证工具。
According to the objective discriminant and prediction of the brain load on the cockpit display interface of the aircraft, three types of physiological measurement techniques such as event-related potentials (ERP), electrocardiogram (ECG) and electro-oculography (EOG) were used in combination with subjective evaluation and performance evaluation. Experimental Measurement and Mathematical Modeling of Brain Load in the Same Flight Experiment. The experimental results show that the peak amplitude (at the Fz electrode) of mismatched negative (MMN) components in ERP measurement technique increases significantly with the increase of mental load, while the peak of P3a component (at the Fz electrode) decreases significantly. ECG The values of standard deviation (SDNN) of all sinus rhythm RR intervals (RR interval) were significantly reduced in the measurement of heart rate variability index; the number of blinks in EOG measurement technique was significantly decreased. On this basis, a physiological comprehensive assessment model of mental workload was established based on Bayes discriminant method, and the result of physical comprehensive evaluation model was compared with NASA_TLX scale discriminant results. The results of physiological comprehensive assessment model discriminant Slightly above the NASA_TLX discrimination result. The model provides a new method for objective, real-time decision-making and prediction of the brain load status of the cockpit display interface, as well as human-induced airworthiness certification in the cockpit display interface of new fighter jets and large passenger aircraft under development in China A new compliance verification tool is provided.