基于最小二乘法的pH值温度补偿系统设计  

Design of temperature compensation system of pH value based on least square method

作　　者：张开远[1] 周孟然[1] 闫鹏程[1] 王瑞[1] 

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《传感器与微系统》2015年第5期109-111,122,共4页Transducer and Microsystem Technologies

基　　金：国家"十二五"科技支撑计划资助项目(2013BAK06B01)

摘　　要：温度对水样的pH值和pH值传感器复合电极电位都有影响,通过对pH值测量原理的分析,提出以最小二乘法为原理的pH值传感器温度补偿模型,设计了以ATMEGA128单片机为核心控制器的水样pH值测量系统。通过对测试数据分析表明:该系统测量的数据精度较高,实现了对水样pH的精确测量。Temperature has an impact on pH value of water and composite electrode potential of pH sensor, through analysis on pH measurement principle, put forward temperature compensation model based on least squares method, design pH value measurement system using ATMEGA128 MCU as core controller. The analysis on test data show that the measurement precision is higher in this system, precise measurement of pH of water is achieved.

关 键 词：PH值传感器 温度补偿 最小二乘法 ATMEGA128 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]