The invention discloses a vehicle passive safety protection method and system. The method comprises the following steps of detecting the weight and sitting posture of a driver and a passenger at an initial moment, calculating a human body proportion model of the driver and the passenger at the initial moment, and setting the human body proportion model as a preliminary model; synthesizing the preliminary model and the weight and sitting posture of the driver and passengers at the current moment, simulating and calculating a human body model in the collision process, and setting the human body model as a simulated collision model; collecting a collision signal, triggering pre-tightening of the safety belt, and feeding back the position of the safety belt after collision; calculating the motion trail, the motion acceleration and the contact point of the head and the safety air bag of the simulation collision model; and calculating the time interval of the collision simulation model in contact with the air bag, combining the time interval with a preset air bag unfolding model of the current vehicle, and deducing the optimal air bag detonation time. According to different sitting posture forms of the driver and passengers, calculation is carried out in combination with the collision signal, dynamic adaptation is carried out on the safety belt and the safety air bag, and the protection effect on the driver and passengers is effectively improved.
本发明公开了一种车用被动安全防护方法及其系统,包括如下步骤:检测初始时刻的驾乘人员体重、坐姿,计算初始时刻的驾乘人员的人体比例模型,设为初步模型;合成初步模型、当前时刻的驾乘人员体重与坐姿,模拟计算碰撞过程中的人体模型,设为模拟碰撞模型;采集碰撞信号,触发安全带预紧,并反馈安全带碰撞后位置;计算模拟碰撞模型的运动轨迹、运动加速度、头部与安全气囊的接触点;计算模拟碰撞模型接触安全气囊的时间间隔,将时间间隔与当前车辆预设的安全气囊展开模型结合,推演最佳安全气囊起爆时间。针对差异化的驾乘人员坐姿形态,结合碰撞信号进行计算,对安全带与安全气囊进行动态适配,有效提高对驾乘人员的保护效果。
Passive safety protection method and system for vehicle
一种车用被动安全防护方法及其系统
08.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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