基于AUTOSAR的控制流检测模块的设计与实现  

Design and Implementation of Control Flow Detection Module Based on AUTOSAR

作　　者：李思健 石春[1] 吴刚[1] 秦琳琳[1] LI Sijian;SHI Chun;WU Gang;QIN Linlin(Department of Automation,University of Science and Technology of China,Hefei 230027,China)

机构地区：[1]中国科学技术大学自动化系,安徽合肥230027

出　　处：《仪表技术》2022年第4期1-6,60,共7页Instrumentation Technology

摘　　要：汽车电子软件的高速发展伴随着对功能安全的需求增加。分析了现有的控制流检测技术,综合可移植性、功能性等方面设计,实现了基于AUTOSAR标准的控制流检测模块。检测算法在程序中插入若干个“检查点”,通过判断两“检查点”的转移关系是否符合预设的约束条件来检测控制流的错处。在Freescale HCS12X处理器上实现并进行功能和性能测试。实验结果表明,该模块能及时准确地检测出错误,可提高软件系统的安全性,但增加了运行时长,对实时性有一定影响。With rapid development of automotive software,the demand for functional safety is increasing.In this paper,the existing control flow detection technology is analyzed,and control flow detection module based on AUTOSAR is designed and implemented from the aspects of portability and functionality.The detection algorithm inserts several "checkpoints" into the program and detects control flow errors by determining whether transition between two checkpoints conforms to preset constraints.Function and performance tests are conducted on the Freescale HCS12 X microprocessor.The results show that the module can detect errors timely and accurately,which improves safety of the software system.However,the module increases running time,which has a negative impact on real-time performance.

关 键 词：控制流检测 汽车开放系统架构标准 功能安全 检查点 看门狗 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]