基于功能性大脑网络,识别草原道路上的特殊天气条件
Mingxing Gao1, Yin Liang1, Hangtian Li1
1Energy and Transportation Engineering College, Inner Mongolia Agricultural University, Hohhot, China.
Traffic injury prevention
|December 15, 2025
概括
自动驾驶系统在恶劣的天气中扎,如沙暴,影响驾驶员接管性能. 大脑网络分析和机器学习准确地识别天气条件,提高自动驾驶的安全性.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 自动驾驶技术 自动驾驶技术
背景情况:
- 内蒙古的草原道路为自动驾驶研究提供了理想的条件,因为交通量低,几何结构简单.
- 然而,像畜牧过境和恶劣天气 (沙风,雨,雪) 等挑战阻碍了自主系统的性能,需要驾驶员的干预.
- 司机接管过程涉及复杂的认知活动,使得理解大脑功能网络对于阐明机制至关重要.
研究的目的:
- 在各种天气条件下的驾驶员接管事件中分析大脑功能网络特征.
- 研究不同天气场景对认知处理和大脑网络动态的影响.
- 开发一种机器学习模型来识别天气条件,以增强自动驾驶决策支持.
主要方法:
- 在阳光明,沙暴和雨/雪条件下进行了一项驾驶模拟实验.
- 在模拟牲畜交叉过程中记录了脑电图 (EEG) 信号和接管响应时间.
- 使用相滞后指数构建相位同步网络,并在 θ,α 和 β 频带中分析拓特征. 一个K-最近邻居 (KNN) 算法被用于天气分类.
主要成果:
- 接管响应时间在沙暴中最长,表明视觉干扰和受阻的认知控制.
- 恶劣的天气削弱了区域间的大脑连接,特别是在β频段,影响了接管稳定性.
- 降雨和降雪条件显示了信息处理的增强的 θ 和 α 频段网络集成,而阳光条件保持了稳定的大脑连接和较低的认知负载,从而提高了接管性能.
- 该KNN模型在天气识别方面实现了96%的准确性,证明了良好的概括性.
结论:
- 大脑功能网络分析提供了对恶劣天气中驾驶员接管机制的见解.
- 这些发现支持通过提供神经生理学证据来优化自主驾驶策略,以在特殊天气条件下进行适应性决策.
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