基于DSP的智能仪表串行通信与抗干扰实现  

Realization of serial communication and Anti-jamming for intelligent instrument based on DSP

作　　者：艾红[1] 邓大伟[1] 唐斌[1] 

机构地区：[1]北京信息科技大学自动化学院控制工程系,北京100192

出　　处：《自动化与仪器仪表》2011年第6期125-127,共3页Automation & Instrumentation

基　　金：北京市教育委员会科技发展计划面上项目资助(KM200910772008)

摘　　要：阐述了基于DSP的智能仪表RS232串行通信接口电路设计,采用MAX202芯片,完成智能仪表与计算机的异步串行通信。分析了串行通信接口模块SCI波特率计算方法和串行通信程序设计。实现了RS485通信电路设计。阐述了硬件抗干扰,内电层分割,抑制干扰源和提高敏感元器件的抗干扰性能等方法。Serial communication circuit design of intelligent instrument based on DSP is expounded.Using MAX202 chip,serial communication between intelligent instrument and computer is completed.The calculation method of SCI baud rate is analyzed and program design of serial communication is illustrated.RS485 communication circuit design is realized.Hardware Anti-jamming and division of internal circuit are described.The methods of restraining disturbing source and enhancing anti-jamming performance of sense component are expounded.

关 键 词：智能仪表 串行通信 抗干扰 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]