非旋转式驾驶员安全气囊是否是较好的解决方案?

美国联邦机动车安全标准FMVSS 208对汽车设计者提出新的挑战,使他们重新考虑驾驶员侧面安全气囊的形状是否适应新的要求。最新试验提出,非对称设计和非旋转式驾驶员安全气囊模块特别向设有坚固驾驶室的车辆提供了改进的碰撞保护的可能性。     

汽车安全气囊装置中传感器的数学模型

论述了机械型汽车安全气囊装置中传感器的工作原理，对组成传感器的各元件进行了受力分析，从简化模型入手，建立了传感器的解析数学模型，根据设计要求，考虑综合因素，建立了传感器的实际数学模型，求解的方法可采用数值法。     

安全气囊不是万能的

谈到汽车安全．很多人会立即想到安全气囊。它是车辆发生事故时．保护车内乘员的安全设备之一。当汽车受到强大碰撞冲击时．气囊可以保护驾驶员和乘客的安全．防止汽车司乘人员受到严重的脑部和胸部损伤．以降低正面或侧面碰撞中车内人员的伤亡率。     

骏捷FRV轿车安全气囊系统的检修方法

骏捷FRV是沈阳华晨公司新推出的一款两厢式轿车,属于中华车系。按照引爆装置的数目和相关功能进行划分,骏捷FRV轿车安全气囊系统分为两种,即双路安全气囊系统和6路安全气囊系统。双路安全气囊系统具有正面防护功能,引爆装置有2个（驾驶员安全气囊、前排乘客安全气囊）：6路安全气囊系统在双路安全气囊系统的基础上增加了侧面防护功能,引爆装置有6个（驾驶员侧面安全气囊、前排乘客侧面安全气囊、驾驶员安全带张紧器、前排乘客安全带张紧器、2个侧面安全气囊传感器）。     

汽车安全气囊滚球式碰撞传感器结构设计

在安全气囊系统(SRS)设计中,需要SRS能够精确感应汽车发生的碰撞,并按照程序判断碰撞事故的严重程度。文章采用滚球式碰撞传感器来检测和判断汽车发生碰撞后的撞击信号。汽车发生碰撞时,滚球式碰撞传感器能根据汽车的速度和加速度大小,自动选择安全带预紧器动作或与安全气囊同时工作,从而避免了气囊的浪费。滚球式碰撞传感器具有结构简单、抗干扰能力好、制造成本低以及使用维护方便等优点,已经成功用于多款车型。     

安全气囊汽车安全史上的里程碑

安全气囊是现代轿车上引人注目的新技术装置。安装了安全气囊装置的轿车转向盘,平常与普通转向盘没有什么区别,但一旦车前端发生了强烈的碰撞,安全气囊就会瞬时间从转向盘内“蹦”出来,垫在转向盘与驾驶员之间,防止驾驶员的头部和胸部撞击到转向盘或仪表板等硬物上,起到安全带所不及的安全保护作用。 汽车安全气囊作为一项重要的被动安全技术,在发     

利用侧面安全气囊提高侧撞乘员保护效果的研究

文章简要阐述了针对C-NCAP侧撞要求中对于改进乘员保护所需的工作,基于侧面碰撞试验结果,分析了侧面气囊对乘员姿态控制和身体各部位的保护机理,提出了侧面气囊的设计思路。并结合某一车型的实际侧面碰撞性能提升开发过程,利用多次侧撞台车试验优化了侧面气囊并在整车侧撞试验中验证了气囊对假人胸部和腹部在C-NCAP中最易失分部位的保护效果。     

搭载艾里逊变速箱的校车为学生提供安全保障

北美地区已经拥有超过50万辆的各品牌校车,这些校车几乎无一例外地配备了艾里逊自动变速箱。除了在节油、减少污染和可靠性等方面的优势之外,令驾驶员可以更加安心的驾驶,在很大程度上保障了学生的安全。     

汽车安全气囊的使用及其注意事项

从安全气囊的工作原理着手,给出了安全气囊的控制原理,分析了其工作过程;指出了现有安全气囊在使用过程中的缺陷,提出了改进措施;最后总结了安全气囊在使用中应该注意的问题。     

安全带与安全气囊使用中的几个误区

在汽车的安全系统中,目前最受关注、应用最为广泛的是汽车座椅安全带与安全气囊两大装备.这二者的应用,挽救了不少人的生命,然而有许多人在使用这两大装备时还存在一些错误的认识,为此,在这里予以纠正.     

安全气囊技术的新进展

安全气囊是一种在汽车碰撞事故中自动充气膨胀,在二次碰撞中保护乘员、减轻伤害的安全保护装置。目前,世界汽车市场上,安全气囊日益普及,安全气囊技术也日臻成熟。本文介绍了安全气囊技术,指出现存问题,并对智能气囊技术进行介绍。     

汽车安全带安全气囊的新发展

简要回顾了汽车安全带、安全气囊的发展历史，对汽车安全带、安全气囊的发展动向作了重点介绍。基于目前国内外在该领域的差距，提出了一些应对策略。     

Simulation of an airbag deployment in out-of-position situations

The commonly used 'uniform pressure method' (UP) is a well-tried method to simulate an airbag deployment in accident cases. Nevertheless, this method indicates rather heavy inadequacies at the examination of the airbag deployment in the first milliseconds. A solution is the airbag deployment calculation by using computational fluid dynamics (CFD) methods, wherein the calculated gas flow pressure may be applied 'correctly' to the airbag shell elements.

This CFD simulation is integrated in LS-Dyna with the so-called Arbitrary Lagrangian Eulerian (ALE) method and in this review the result's accuracy will be discussed. According to the FMVSS 208, an OoP model will be built-on and comparisons with simulations and tests are done. Another important detail in this labour is the airbag cover examination and the tear seam modelling, as a trivial FE modelling cannot be done due to the very fine mesh. So two possible solutions for tear seam modelling are introduced and discussed. Furthermore considerations concerning the gas generator combustion will also be revealed and an analysis about the impossibility of the direct comparison between gas generator tank test and airbag deployment will be done. At least some parameters, which take effects in the simulation, are researched and evaluated, so finally an optimised simulation model can be made available for further examinations.     

斯柯达明锐轿车安全气囊系统工作原理及检修

本文主要介绍了上海大众斯柯达轿车安全气囊系统组成及工作原理。阐述了检修流程及要求,提出了安全气囊系统检修注意事项,并且阐述了安全气囊系统故障诊断与排除实例一例。     

Stereovision-based real-time occupant classification system for advanced airbag systems

Occupant classification in a passenger seat is one of the critical components for any advanced airbag system. Many automotive electronic suppliers and engineers predict that the camera will be the next generation sensor for active and passive safety systems because it has several advantages compared to other sensors. The present paper describes a stereovision-based occupant classification system (OCS) and intelligent algorithm with embedded system by which triggering of the airbag deployment can be controlled. The system consists of a pair of stereo cameras and dual Digital Signal Processor (DSP): the first DSP is for the stereo matching processing, and the second is for occupant classification. The results show that the reaches 97%, and the processing time is 960 ms. Such performance indicates that the feasibility of the system as an embedded OCS is high.     

Occupant position detection system (OPDS) for side airbag system

In order to prevent injury of the occupant of the passenger seat when a side airbag deploys, we have developed an occupant position detection system. It detects the occupant's head entering the side airbag deployment zone. If so, the side airbag operation is inhibited and an indicator light on the side airbag alerts the occupant to the improper sitting position. It detects accurately the occupant's size and the head entering the side airbag deployment zone, using an occupant identification algorithm and electrostatic capacity sensors under the seat trim cover which determine the dielectric around the seat surface.     

汽车安全气囊起爆车速与乘员伤害关系的仿真研究

利用碰撞受害者模拟软件MADYMO建立了某客车乘员约束系统前碰撞计算机仿真模型,通过对不同碰撞车速下乘员伤害值的仿真计算,研究了保证乘员伤害指标达到一定要求的汽车安全气囊起爆车速。使用生物力学灰度区的概念描述和确定气体发生器的点火阈值,也就是从乘员保护的观点出发,确定不同结构汽车的气囊点火车速,从而为整车匹配安全气囊提供了良好的手段和依据,并能够大大降低匹配时间和周期。     

Performance evaluation of slim low-risk-deployment dual-type passenger airbag system with dispersed inflation pressure

Motor vehicle passenger airbags have been proven to be effective for reducing the possibility of passenger injury during a crash. However, the inflation of the airbag sometimes causes serious injury when a passenger is positioned close to the airbag. The United States Federal Motor Vehicle Safety Standard (FMVSS) 208 requires the use of a low-riskdeployment (LRD) passenger airbag system. This paper proposes a newly developed airbag system comprising two slim airbags mounted on the instrument panel. A series of tests were conducted using the FMVSS 208 test procedures to demonstrate the effectiveness of the proposed system. It was found that the system not only satisfied the injury criteria of FMVSS 208, but was also effective for protecting passengers of all sizes.