摘要： 根据IEC61508对可编程逻辑器件功能安全的要求，提出基于ARM的模拟量输入模块的安全设计。介绍该设计使用的诊断技术及其实现方法。该设计使用2块ARM分别用于工作和检测，具有较高的诊断覆盖率，符合IEC61508关于安全完整性的要求，适用于SIL3/SIL4的安全系统。
关键词:
ARM微处理器,
功能安全,
诊断覆盖率,
模拟量输入
Abstract: Aiming at the functional safe demands of programmable electronic systems in IEC61508, this paper proposes the safe design of Analog Input(AI) module based on ARM Microprocessor. It expounds the technique of diagnosis and implementation in this module. This design has two separated ARM microprocessors used for work and diagnosis, and has high diagnostic coverage, it conforms to the requirements of IEC61508, it is suitable for SIL3/SIL4 security system.
Key words:
ARM microprocessor,
functional safety,
diagnostic coverage rate,
Analog Input(AI)
中图分类号:
边俊, 黄文君, 何伟挺. 基于ARM的模拟量输入模块安全设计[J]. 计算机工程, 2011, 37(13): 241-242,245.
BIAN Dun, HUANG Wen-Jun, HE Wei-Ting. Safe Design of Analog Input Module Based on ARM[J]. Computer Engineering, 2011, 37(13): 241-242,245.