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首页> 外文会议>Advanced microsystems for automotive applications 2009 : Smart systems for safety, sustainability, and comfort >Airbag Electronics: from Single Building Blocks to Integrated Solutions
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Airbag Electronics: from Single Building Blocks to Integrated Solutions

机译：安全气囊电子产品：从单一模块到集成解决方案

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Airbag electronic systems measure various sensor signals and control several different actuators in an effort to prevent passenger injuries in case of accidents. This paper describes the electronics needed in such an application (acceleration sensors, bus interfaces, uC, power supply, squib drivers etc.) and the development of airbag systems as well as their increase of complexity over time. Acceleration information is delivered via PAS, PSI5 or DSI busses by high g acceleration sensors installed on vehicle corners and pressure sensors installed inside the doors. This information is validated by the microcontroller vs. centrally located inertial sensors. Precisely sampled acceleration values are used to identify a crash situation, in which case the firing circuit is enabled and a firing signal is sent to deploy the airbags. Building blocks like voltage regulator/power supplies and squib drivers have to provide the energy at the right time to ignite the airbag balloons mounted in the front and sides of the vehicle and tighten seat belts. Over time, new features have been added to the system - including rollover protection with airbag curtains, rear crash protection (whiplash prevention), and superior advanced crash detection algorithms to fire multi-stage airbags. All this functionality needs to be addressed by effective, safe, reliable, cost-effective electronics. Integration of the functions in a few application specific ICs and the fact that all function blocks and necessary semiconductor processes are available in one company makes the creation of synergies and the implementation of cost-effective silicon strategies possible.
机译：安全气囊电子系统可测量各种传感器信号并控制多个不同的执行器，以防止发生事故时伤害乘客。本文介绍了此类应用中所需的电子设备（加速度传感器，总线接口，uC，电源，爆管驱动器等），以及安全气囊系统的发展及其随着时间的推移而增加的复杂性。加速度信息通过PAS，PSI5或DSI总线通过安装在车辆转弯处的高加速度传感器和安装在车门内的压力传感器传递。该信息通过微控制器与位于中心的惯性传感器进行了验证。精确采样的加速度值用于识别碰撞情况，在这种情况下，启用点火电路并发送点火信号以展开安全气囊。诸如电压调节器/电源和爆管驱动器之类的构建块必须在正确的时间提供能量，以点燃安装在车辆前部和侧面的安全气囊并束紧安全带。随着时间的流逝，系统中已增加了新功能-包括安全气囊帘的防侧翻保护，后部碰撞保护（防止鞭打）以及先进的先进碰撞检测算法，可触发多级安全气囊。所有这些功能都需要有效，安全，可靠，具有成本效益的电子设备来解决。几个公司专用IC中功能的集成以及所有功能块和必要的半导体工艺都可以在一家公司获得的事实，使得创造协同效应和实施具有成本效益的芯片策略成为可能。

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