计算机科学 ›› 2020, Vol. 47 ›› Issue (4): 318-322.doi: 10.11896/jsjkx.190700137
• 信息安全 • 上一篇
唐敏1, 王东强2, 曾鑫钰1
TANG Min1, WANG Dong-qiang2, ZENG Xin-yu1
摘要： 汽车主动避撞系统的研究主要是为了能够提前对汽车碰撞做出预警及自动处理,有效抑制交通事故的发生。文中开展基于摄像头、激光雷达、车间通信的车辆防碰撞预警关键技术研究,提出了一种适用于智能车超车换道阶段的基于TTC和冲突概率估计的碰撞概率主动安全预测算法。综合考虑时间域和超车距离等条件的约束,建立车辆超车换道最小安全距离模型;依据超车行为约束条件,提出碰撞时间与碰撞概率的公式(TTC);同时引入多元高斯分布的概率密度函数,用冲突潜在领域表示潜在冲突的可能性大小,建立了两车潜在冲突区域重合的概率密度计算模型。在1∶10模拟赛道仿真平台上对所提方法进行了模拟测试,其对4辆智能车200次的同向及反向接近预警警报和紧急警报的准确率均为100%,从而验证了该方法的有效性。
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