面向BIT验证的存储器故障模拟及注入方法研究  

Research of Memory Fault Simulation and Fault Injection Method for BIT Validation

作　　者：徐军[1] 徐萍[1] 

机构地区：[1]北京航空航天大学可靠性与系统工程学院,北京100191

出　　处：《计算机测量与控制》2013年第8期2027-2029,2058,共4页Computer Measurement &Control

摘　　要：随着航空电子设备复杂性的日益增加,BIT作为系统自检和故障诊断与隔离的重要手段,已在各机载设备中广泛应用;为满足航空电子设备中电路板级BIT验证需求,提出了基于模拟的故障注入技术,并针对板上器件——存储器进行了故障模拟;介绍了存储器故障模拟及注入原理,并对存储器常见故障模式以及故障触发方式进行分析,进而构建了故障模型;基于开源模拟器QEMU进行了二次开发,进行了大量修改并添加了故障注入模块,能够支持对存储器的存储单元以及地址译码器进行故障注入;并通过实例验证了该工具的正确性与有效性。As the complexity of the avionics, BIT （Built-In-Test） is an important means of system self-test and fault diagnosis and fault isolation, it has been widely used in various airborne equipment. To realize the validation of the board-level BIT for avionics, this paper pres- ented simulation-based fault-injection. A fault injector for memory fault was designed and implemented. Principle of the memory fault simula- tion and fault injection was introduced. After analyzing the typical failure mode of the memory and fault trigger mechanism, we built the memory fault model library. Based on the open source simulator QEMU, a lot of code was modified and the fault injection module was added to support the memory unit fault simulation and decoder fault simulation. Experiment was designed to validate the authenticity and validity of the fault injection tool.

关 键 词：故障注入 模拟器 BIT验证 QEMU 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]