缺少网 queshao.com

 缺少网>文档库>u乐国际娱乐平台>外文翻译>单片机抗干扰技术{外文翻译}

单片机抗干扰技术{外文翻译}

编号:10-77379 | doc 格式 | 59.00K | 9 页
  1. 文档介绍
  2. 上传者:xiaowei
单片机抗干扰技术{外文翻译}

中文:3500字
英文:12000字


随着单片微机在各个领域中的应用越来越广泛,对其可靠性要求也越来越高。单片机系统的可靠性由多种因素决定,其中系统抗干扰性能是可靠性的重要指标。工业环境有强烈的电磁干扰,因此必须采取抗干扰措施,否则难以稳定、可靠运行。
工业环境中的干扰一般是以脉冲形式进入微机系统,渠道主要有三条。空间干扰(场干扰),电磁信号通过空间辐射进入系统。过程通道干扰,干扰通过与系统相连的前向通道、后向通道及与其它系统的相互通道进入。供电系统干扰,电磁信号通过供电线路进入系统。
一般情况下空间干扰在强度上远小于其它两种,故微机系统中应重点防止过程通道与供电系统的干扰。
抗干扰措施有硬件措施和软件措施。硬件措施如果得当,可将绝大部分干扰拒之门外,但仍然会有少数干扰进入微机系统,故软件措施作为第二道防线必不可少。由于软件抗干扰措施是以CPU为代价的,如果没有硬件消除绝大多数干扰,CPU将疲于奔命,无暇顾及正常工作,严重影响系统的工作效率和实时性。因此,一个成功的抗干扰系统是由硬件和软件相结合构成的。
本文设计的激光打标控制系统由于现场使用环境较恶劣,各种干扰因素较多,如交流噪声、电网干扰及其它电磁干扰等,因此必须采取有效的抗干扰措施以确保系统稳定工作,下面介绍我们在该系统硬件、软件和CPU上采取的抗干扰措施。




The only flat machine technical foreword of interference rejection
Along with only flat personal computer in the sphere of each application more and more extensive, for its reliability requirement, it is also high. The reliability of single flat machine system is decided by various factor , is the important index of reliability in which the systematic performance of interference rejection. Industrial environment has strong electromagnetism to disturb , therefore must be hard to stabilize otherwise with the measure of interference rejection , reliable operation.
Industrial environment in disturb is normally with pulse form enter the system of personal computer, channel has Sub_clause of 3 mainly.
Space disturbs ( site disturb ), electromagnetism signal enters system through space radiation.
It is entered that course interference between channels disturbs to pass through the forward passageway that is linked with system, backward passageway and the mutual passageway with other system.
Power supply system disturbs , electromagnetism signal enters system through the line of power supply.
Usually space disturb in strength on is smaller than other two, so in the system of personal computer, it should be key to prevent course passageway with power supply system disturb.
The measure of interference rejection has hardware measure and software measure. If hardware measure is proper, but will unique most of disturb the door that resisted besides, but can still have few disturb to enter the system of personal computer, so, it is essential that software measure is second road defence line. Since the software measure of interference rejection is price with CPU, if have no hardware to eliminate the most, disturbs , CPU will be weighed down with work , has no time to take normal work into account , is serious to affect systematic working efficiency and real time. Therefore a successful system of interference rejection is formed from hardware and software.
  
关于我们 联系我们 帮助中心 支付方式  侵权处理 免责声明 友情链接 网站地图
  蜀ICP备11006018-1