毕业论文 安全气囊电控系统分析.doc

摘 要 汽车安全气囊系统（简称SRS）是辅助安全系统，它通常是作为安全带的辅助安全装置出现。安全带与安全气囊是配套使用，没有安全带，安全气囊的安全效果将要大打折扣。据调查，单独使用安全气囊可使事故死亡率降低18%左右，单独使用安全带可使事故死亡率下降42%左右，而当安全气囊与安全带配合使用时可使事故死亡率降低47%左右。由此可见，只有两者相互配合才能最大可能的降低事故的死亡率，安全气囊系统必然作为安全带的辅助系统出现。 当发生碰撞事故时，安全带将乘员“约束”在座椅上，使乘员的身体不至于撞到方向盘、仪表板和风窗玻璃上，避免乘员发生二次碰撞；同时避免乘员在车辆发生翻滚等危险情况下被抛离座位。安全气囊的保护原理是：当汽车遭受一定碰撞力量以后，气囊系统就会引发某种类似小剂量炸药爆炸的化学反应，隐藏在车内的安全气囊就在瞬间充气弹出，在乘员的身体与车内设备碰撞之前起到铺垫作用，减轻身体所受冲击力，从而达到减轻乘员伤害的效果。Automobile airbag system (hereinafter referred to as SRS) is auxiliary safety system, it is often used as an auxiliary safety device appeared seat belt. Seat belts with airbag is supporting the use, without the seat belt and the airbag safety effect will be discounted. According to the survey, used alone airbags can make the accident rate by 18% or so, separate tie-off can make the accident mortality reduction 42% left and right, but when the airbag with seat belt when used together can make accident 47 per cent lower mortality. Thus, if the two biggest possible mutual coordination can reduce accidents of mortality, airbag system inevitable as belt auxiliary system appears. When collision accident occurred, the safety belt will occupant restriction in the seat, make the occupant body not hit the steering wheel, instrument panel and wind window pane, avoid occupant occur secondary collision; At the same time avoid passenger car produces rolling and other dangerous situations is cast to seat. The airbag protection principle is: when car collision force suffered after certain airbag system will trigger some similar small doses of explosive chemistry, hidden in the cars airbags would be instantly inflatable pop up, in crew members body and in-ehicle equipment collision before play matting function, reduce the body by wallop, thereby achieve alleviate occupant damage effect. Keywords: airbags, Sensors; Working principle 目 录 第一章 绪论 1 1.1 安全气囊的概述 1 1.2 安全气囊发展史 2 第二章 汽车安全气囊系统组成及其工作原理 3 2.1 汽车安全性 3 2.2 安全气囊系统组成 3 2.3 安全气囊的工作原理 4 2.4 安全气囊的特点 6 2.5 安全气囊的化学原理及打开条件 6 2.5.1 化