摘要： 设计一种基于飞思卡尔芯片技术的复杂安全气囊控制系统，包括初始化模块、上电自检模块、安全气囊控制模块、实时自检模块和定时器模块。系统硬件采用9S12系列16位微控器，集成多个MMA系列微机电系统加速度传感器和MC33797点火驱动芯片。实验结果表明，该系统具有较高的集成度、可靠性，且实时性较好。

关键词: 安全气囊, 加速度传感器, 加速度阈值, 移动窗口积分

Abstract: This paper proposes a complicated airbag control system based on the Freescale’s chip technology. It includes initial module, startup self-check module, airbag control module, real-time self-check module and timer modules. The system employs the 9S12 series 16 bit microcontroller, and integrates several MMA series Micro Electro Mechanical Systems(MEMS) based acceleration sensors and squib drivers MC33797. Experimental results show that the whole system has high level of integration and reliability, and has good real-time.

Key words: airbag, acceleration sensor, acceleration threshold, moving window integral

中图分类号: 

• N945