A Low-Cost On-Line Monitoring Mechanism for the FlexRay Communication Protocol

被引：2
|
作者：
Sedaghat, Yasser [1 ]
Miremadi, Seyed Ghassem [1 ]
机构：
[1] Sharif Univ Technol, Dependable Syst Lab, Tehran, Iran
来源：
LADC: 2009 4TH LATIN-AMERICAN SYMPOSIUM ON DEPENDABLE COMPUTING | 2009年
关键词：
Distributed embedded systems; FlexRay protocol; Fault injection; Transient faults; Single point of failure; On-line monitoring;
D O I：
10.1109/LADC.2009.20
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Nowadays, communication protocols are used in safety-critical automotive applications. In these applications, fault tolerance is a main requirement and the existence of single points of failure is a serious threat to system failures. Among the communication protocols, FlexRay is expected to become the communication backbone for future automotive systems. In this paper, we identify single points of failure in the FlexRay protocol by injecting a total of 135,600 single-bit transient faults into all accessible registers of the FlexRay communication controller. The results showed that about 1.2% of all injected faults caused the controller to freeze immediately. Based on these results and detailed study of the FlexRay specifications, a low-cost on-line monitoring mechanism is proposed to check freeze errors. Using this mechanism, the host controller distinguishes about 99.8% all occurred freeze errors into errors due to transient faults or due to standard operation of the FlexRay protocol.
引用
收藏
页码：111 / 118
页数：8
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