基于COM Express模块的安全开关机方案  

A Safety Power on and Shutdown Solution Based on COM Express Module

作　　者：秦友伦[1] 袁强[1] 涂炯[1] 

机构地区：[1]中国兵器工业第五八研究所特种电子技术部,四川绵阳621000

出　　处：《兵工自动化》2014年第5期69-71,共3页Ordnance Industry Automation

摘　　要：为解决特殊嵌入式计算机在非ATX电源供电情况下,因非安全开关机造成的系统崩溃、损坏文件系统等问题,设计一种基于COM Express模块的非ATX电源安全开关机方法。通过控制PS_ON引脚来开启或关闭电源,给出安全开关机单元原理框图,从开关控制单元设计、CPLD控制单元设计对硬件进行设计介绍,并使用VerilogHDL语言进行软件设计,并已成功应用于某型号项目中。结果表明:该方法有效可行,能实现物理开关机转换为软开关机功能,保证系统的安全关机。In order to solve the problem of system crash, damaging file system due to non-safety power on and shutdown in the special embedded computer system which supplied by non-ATX power, a safety power on and shutdown design was put forward based on COM Express module in a non-ATX power supply system. It controls PS_ON pin to turn on or turn off the power. This paper give block diagram of the safety switch unit and introduce the hardware design of the switch control unit, CPLD control unit. It uses VerilogHDL language to design the software. This solution has been successfully applied to a project. The results show that the method is effective and feasible. It can change physical switchin~ function and ensure svstem safetv shutdown.

关 键 词：嵌入式计算机 CPCI COM EXPRESS模块 安全开关机 

分 类 号：TP311.11[自动化与计算机技术—计算机软件与理论]