Research on Visual and Physiological Characteristics of Drivers Under Stress Scene

摘要

To research the visual and physiological characteristics of drivers under stress scene, the visual and physiological data of drivers under different stress scenarios were analyzed. By using the method of dynamic clustering, Pearson test, and mathematical analysis, the visual and physiological characteristics of the driver in the stress situation were studied. In the meanwhile, the characteristics of the driver's HRV were analyzed in time domain and frequency domain, which were selected as the analysis index. It shows that: the driver's visual distribution is more concentrated under the stress scene and drivers are more accustomed to obtain traffic information from near the front of the region which they regard as the main area, when objects in the scene moving, the driver will judge the moving range of the object to selected 1-2 related auxiliary area for information retrieval. The driver used to gaze the main area and scan the auxiliary area. In terms of the rate of increase in heart rate, different stress scenarios will have a significant impact on the driver's heart rate growth rate. In the HRV time domain characteristics, the driver to the two objectives of pedestrians and bicycles has a longer degree of tension, and the weather, the vehicle, the degree of tension of is intermittent. In the frequency domain characteristics of HRV, the driver's mental workload has increased when he encounters pedestrians and bicycles, the driver's mental workload has reduced when he encounters motor vehicles and external weather conditions.