基于ISO26262的车道保持辅助的功能安全概念设计
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摘要
目前功能安全标准ISO26262在汽车自动驾驶辅助系统设计过程中的应用,尤其是概念阶段的设计应用缺乏统一有效的方法。详细阐述了ISO26262标准第三部分概念阶段的内容和要求,包括相关项定义、功能安全周期启动、HARA分析和功能安全概念,介绍了符合ISO26262标准进行概念阶段各部分设计的具体方法,以车道保持辅助(LKA)为例阐述详细的设计步骤和分析过程。此方法已应用于长安汽车部分自动驾驶辅助系统的功能安全概念设计,为其他自动化相关驾驶辅助系统开展功能安全概念设计提供了一定的方法指导。
The unitive and effective method to design vehicle automatic driving assistance system applying for functional safety standard ISO26262 is absent nowadays,especially for concept design phase. Therefore,the contents and requirements of the conceptual phase of Part-3 in ISO26262 were expounded in detail,including item definition,initiation of the safety life cycle,HARA analysis and function safety concept. The specific design method of concept phase in accordance with ISO26262 was introduced,and the detailed design steps and analysis process were elaborated according to the case of Lane Keeping Assistance( LKA). The proposed method has been applied to functional safety concept design of some automatic driving assistant systems of Chang'an automobiles,and provides some methodological guidance for other automatic driving assistant systems to carry out the conceptual design of functional safety.
The unitive and effective method to design vehicle automatic driving assistance system applying for functional safety standard ISO26262 is absent nowadays,especially for concept design phase. Therefore,the contents and requirements of the conceptual phase of Part-3 in ISO26262 were expounded in detail,including item definition,initiation of the safety life cycle,HARA analysis and function safety concept. The specific design method of concept phase in accordance with ISO26262 was introduced,and the detailed design steps and analysis process were elaborated according to the case of Lane Keeping Assistance( LKA). The proposed method has been applied to functional safety concept design of some automatic driving assistant systems of Chang'an automobiles,and provides some methodological guidance for other automatic driving assistant systems to carry out the conceptual design of functional safety.
引文
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[2]陈慧,徐建波.智能汽车技术发展趋势[J].中国集成电路,2014,23(11):64-70.CHEN Hui,XU Jianbo.Developing trend of intelligent vehicle technology[J].China Integrated Circuit,2014,23(11):64-70.
[3]刘佳熙,郭辉,李君.汽车电子电气系统的功能安全标准ISO26262[J].上海汽车,2011(10):57-61.LIU Jiaxi,GUO Hui,LI Jun.Functional safety standard ISO26262of vehicle e/e system[J].Shanghai Auto,2011(10):57-61.
[4]童菲.基于ISO26262的整车电源模式管理系统功能安全概念设计[J].机电一体化,2015,21(7):63-67.TONG Fei.Functional safety concept design of vehicle power supply management system basedon ISO26262[J].Mechatronics,2015,21(7):63-67.
[5]葛鹏,陈勇,罗大国,等.基于道路车辆功能安全标准ISO26262的7DCT电控系统设计[J].汽车技术,2014(9):21-23.GE Peng,CHEN Yong,LUO Daguo,et al.Design of DCT electrical control system based on road vehicle functional safetystandard ISO26262[J].Automobile Technology,2014(9):21-23.
[6]LEE K J,LEE K H,MOON C,et al.Design and development of a functional safety compliant electric power steering system[J].Journal of Electrical Engineering&Technology,2015,10(4):1915-1920.
[7]SCHAFFNER J.Hazard analysis and functional safety concept according to ISO 26262 for driver assistance systems[J].Atzautotechnology,2011,6(1):22-27.
[8]International Standard Office.ISO 26262 Road Vehicles-Functional Safety[S].Geneva,Switzerland:International Standard Office,2011.
[9]BAYBUTT P.A critique of the hazard and operability(HAZOP)study[J].Journal of Loss Prevention in the Process Industries,2015,33(7):52-58.
[10]MADLO HERRERA,A S LUNA,A C A D COSTA,et al.A structural approach to the HAZOP-hazard and operability technique in the biopharmaceutical industry[J].Journal of Loss Prevention in the Process Industries,2015,35:1-11.
[11]BAYBUTT P.Requirements for improved process hazard analysis(PHA)methods[J].Journal of Loss Prevention in the Process Industries,2014,32:182-191.