基于山区公路线形判断的主动安全技术研究

Study on Automotive Active Safety Technology Based on Mountain Area Road Alignment Judgment

为提高汽车在山区公路上驾驶的安全性,防止因驾驶员对不和谐线形的疏忽而造成的交通事故,利用采集到的各种驾驶信息和车辆行驶信息对公路线形进行判断,从而实现对驾驶员的预警。基于山区公路线形判断的主动安全技术,首次被提出。采用矩阵论的思想,将各种不和谐线形定义为状态矩阵,将各种驾驶信息和车辆行驶信息定义为信号矩阵。根据信号矩阵对判断不和谐线形的贡献值不同,建立初始权重矩阵。然后,通过Matlab软件进行迭代仿真,从初始权重矩阵过渡到最终的权重矩阵,该权重矩阵可以作为常量直接使用。用给定线形对最终权重矩阵进行检验,其结果表明:使用该权重矩阵对线形进行判断,得到的结果与给定线形一致。

For the sake of making drivers early warned of the disharmony alignment, the road alignment judgment was made on the basis of the information about driving and vehicle condition. A mountain area road aligmnent judgment-based active safety technology was proposed. The disharmony alignment was de- fined as a state matrix while the information about driving and vehicle condition was defined as a signal ma- trix. An initial weight matrix was built according to the contribution of the signal matrix to the judgment of disharmony alignment, herative simulation was done through Matlab to reach the final weight matrix. The final weight matrix could be used directly as a constant. The final weight matrix was checked against given alignment data.