通过对安全气囊系统PSI5通信协议进行解析,对碰撞传感器的信号特征进行仿真。利用硬件在环仿真测试技术,模拟车辆碰撞的各种工况条件,对安全气囊控制器的控制策略及诊断策略进行测试验证。不仅可以对碰撞工况进行重复试验,也大大降低了实车碰撞试验的测试成本,是安全气囊控制器策略研究的有效测试手段。 By analyzing the airbag system PSI5 communication protocol, the signal characteristics of the crash sensor are simulated. The hardware-in-the-loop simulation test technology was used to simulate various working conditions of vehicle collision, and the control strategy and diagnosis strategy of airbag controller were tested and verified. Not only can the collision test be repeated, but also the test cost of real-vehicle collision test is greatly reduced, which is an effective test method for the airbag controller strategy research.