过采样技术在智能电气阀门定位器中的应用  

Application of Oversampling in Smart Electrical Valve Positioner

作　　者：陈维琨 冀青 

机构地区：[1]中环天仪股份有限公司,天津300384

出　　处：《自动化与仪表》2015年第1期67-69,共3页Automation & Instrumentation

摘　　要：在智能阀门定位器设计中,AD转换器的精度对智能电气阀门定位器控制精度具有重要影响。文章基于瑞萨单片机,采用过采样技术将10位AD转换器的精度提高到12位,提高阀门定位器控制精度的同时,避免采用昂贵的片外AD转换器,降低产品成本。In the design of smart electrical valve positioner,the precision of analog to digital converter（ADC） for precision has importamt implications of smart electrical valve positioner. Oversampling method was used and the ADC＇s detecting precision was increased from 10-bits to 12-bits with Renesas M30626 used as MCU in this paper. Beside this,the measurement precision was increased and the cost of products was reduced with no need of high precision ADC.

关 键 词：阀门定位器 AD转换器 过采样 

分 类 号：TH702[机械工程—仪器科学与技术]