基于STWD100xP WTD嵌入式系统抗EMC技术  

STWD100xP-based EMC Technology for WDT Embedded Systems

作　　者：晏勇 高晓琴[2] 

机构地区：[1]阿坝师范高等专科学校电子信息工程系,四川郫县611741 [2]四川工商职业技术学院信息工程系,四川都江堰611830

出　　处：《现代电子技术》2011年第16期10-13,共4页Modern Electronics Technique

摘　　要：随着嵌入式技术的发展,嵌入式系统对系统稳定性、可靠性、抗干扰性等要求逐渐增高。在此详细分析嵌入式系统EMC产生的原因和途径,在不增加CPU额外开销情况下,采用了意法半导体公司硬件看门狗集成电路STWD100,提高了系统可靠性和稳定性,并给出了STDW100与CPU应用原理图。实验证明,采用STDW100硬件看门狗使嵌入式系统具有很强的抗EMC能力,在实际应用中使系统具有相当高的可靠性和稳定性。With the development of embedded technology,the requirements for embedded systems are gradually heighten in the aspects of system stability,reliability and anti-interference.The causes and ways which generate EMC of embedded system are analyzed in detail.Without increase of any CPU overhead,the system reliability and stability were improved with hardware watchdog integrated circuit STWD100 of ST Company.The application principle diagrams of STWD100 and CPU are given.The experiment proves that the application of STWD100 hardware watchdog makes the capability of embedded systems more strong to resist EMC.In the actual application,It improved the reliability and stability of the embedded system.

关 键 词：嵌入式系统 EMC 可靠性 看门狗 STDW100 

分 类 号：TN919-34[电子电信—通信与信息系统] TP368.1[电子电信—信息与通信工程]