异构感知融合的主动式行人碰撞保护技术研究

道路行人作为交通事故中的弱势群体，在交通事故中伤亡占比高，且头部和下肢是在事故中受伤害最多的部位. 行人保护性能的提升，仅仅通过被动安全很难有所突破，为此当前国内外车企及相关研究机构均加大了对行人安全的投入和技术研究. 主动弹起式引擎盖常规通过力学传感器感知触发执行机构面临开发成本高、周期长等问题，且力学感知传感器易发生不触发或误触发. 近年智能驾驶辅助系统(ADAS)进入普及阶段，集成ADAS的紧急防撞功能(AEB)和引擎盖系统，通过摄像头和雷达进行行人识别和距离感知，碰撞时可快速触发引擎盖弹起，实现行人保护的精准性，减少开发成本和误报的同时，缩短开发周期，性能得分比被动行人保护提升30%以上，大大改善对行人的保护. 

Active Pedestrian Collision Protection Technology Based on Heterogeneous Perception Fusion

As a vulnerable group in traffic accidents, pedestrians account for a high proportion of casualties in traffic accidents, and the head and lower limbs are the most injured parts in the accident. To improve pedestrian protection performance, passive safety method can not be used as only technology for breakthrough. Therefore, most of domestic and foreign car enterprises and relevant research institutions have increased investment and technical research on pedestrian safety. Due to use of conventional mechanical sensors to trigger the actuators, active pop-up hood are facing many problems, such as development costs and cycles, and also the mechanical sensors are prone to miss trigger or no trigger. In recent years, the perception sensor technology was arranged for advanced driving assistance system（ADAS）, entering the stage of popularization, integrating autonomous emergency braking (AEB) and the hood system of ADAS. The camera and radar were used to effectively identify pedestrians and perceive the distance and speed, quickly trigger the hood to spring up, achieve the precise goal of pedestrian protection and reduce the cost. The results show that the new technology can greatly shorten development cycle and reduce the market false alarm rate. Its performance score reaches up to 30%, being higher than passive pedestrian protection, greatly improving the pedestrian protection.