单片机控制系统抗干扰设计  

Anti-disturbance design in the micro-controller system

作　　者：李志宇[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《电子测量技术》2007年第6期100-102,117,共4页Electronic Measurement Technology

摘　　要：单片机控制系统必须具有较高的灵敏度,但是灵敏度越高越容易把干扰引入系统中,因此抗干扰技术己成为单片机控制系统设计时必须考虑的环节。本文分析了单片机控制系统干扰的主要来源,介绍了印制电路板中地线和电源线的布线方法,从硬件和软件两个方面阐述了抗干扰设计。这些抗干扰方法实际应用中取得了良好的效果,使一些单片机控制系统在现场成功运行。High sensitivity plays an indispensable role in micro-controller system. However, the higher the sensitivity is, the easier the disturbance is brought into the system. Therefore, anti-disturbance technology has been a necessary sector to consider in designing micro-controller system. The main sources of the disturbance for micro-controller system are analyzed in this paper. Some methods of locating the wire of ground wire and power wire of PCB are introduced. The design of anti-disturbance is stated from hardware and software two aspects respectively. These anti-disturbance technologies have practically brought about good effect, making some Micro-controller Systems run successfully in the working places.

关 键 词：单片机控制系统 干扰源 抗干扰 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]