一种嵌入式计算机系统的看门狗设计  

Design of Watchdog for Embedded Computer System

作　　者：刘宵辰 赵刚[1] 刘卫华[1] Liu Xiaochen;Zhao Gang;Liu Weihua(Aviation Industry Xi'an Aeronautical Computing Technology Research Institute, Xi'an Shaanxi 710068, China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710068

出　　处：《山西电子技术》2021年第1期32-33,共2页Shanxi Electronic Technology

摘　　要：看门狗在嵌入式计算机系统中应用十分广泛,但软件看门狗机制容易发生看门狗失效,一些硬件看门狗电路无法记录复位时刻的信息。文章设计了一种嵌入式计算机系统的看门狗机制,采用看门狗芯片与处理器相结合实现,既能对系统进行监控,还能实现对狗叫时刻的信息进行记录。Watchdog is widely used in embedded computer system,but software watchdog mechanism is prone to failure,some hardware watchdog circuit cannot record the reset time information.This paper designs a watchdog mechanism of embedded computer system,which is realized by the combination of watchdog chip and processor.It can not only monitor the system,but also record the information of the time when the dog barks.

关 键 词：看门狗 复位 可靠性 嵌入式 

分 类 号：TP368.12[自动化与计算机技术—计算机系统结构]