Design and implementation of pH value measurement circuit in clarification workshop section in sugar industry

SONG Chun-ning; SONG Yun-peng; LIN Xiao-feng; SONG Shao-jian; LI Rong-jun

doi:10.13873/j.1000-97872012.02.006

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Design and implementation of pH value measurement circuit in clarification workshop section in sugar industry

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- Design and implementation of pH value measurement circuit in clarification workshop section in sugar industry
- Vol. 31, Issue 2, Pages: 93-95(2012)
- 作者机构：
  
  广西大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.02.006
  CLC： TS243.8;TP273
- Published：2012
- 稿件说明：
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[1]宋春宁,宋云鹏,林小峰,宋绍剑,李荣军.糖厂澄清工段pH值测量电路设计与实现[J].传感器与微系统,2012,31(02):93-95.

SONG Chun-ning, SONG Yun-peng, LIN Xiao-feng, et al. Design and implementation of pH value measurement circuit in clarification workshop section in sugar industry[J]. 2012, 31(2): 93-95.
[1]宋春宁,宋云鹏,林小峰,宋绍剑,李荣军.糖厂澄清工段pH值测量电路设计与实现[J].传感器与微系统,2012,31(02):93-95. DOI： 10.13873/j.1000-97872012.02.006.

SONG Chun-ning, SONG Yun-peng, LIN Xiao-feng, et al. Design and implementation of pH value measurement circuit in clarification workshop section in sugar industry[J]. 2012, 31(2): 93-95. DOI： 10.13873/j.1000-97872012.02.006.

摘要

针对糖厂复杂工作环境中pH玻璃电极测量存在的阻抗匹配和工业现场电磁信号干扰问题

率先把线性光耦HCNR201运用到INA116前置放大电路中

设计出pH值测量电路。实验结果表明:该电路可以解决阻抗匹配和电磁干扰2个问题

并能快速准确采集蔗汁pH值。

Abstract

Aiming at the impedance matching and electromagnetic interference problems in pH value measuring in the complex conditions in sugar factory

for the first time

HCNR201 optocoupler isolation is applied to INA116 preamplification circuit

the pH value measuring circuit is worked out.The experimental result shows that this circuit can not only solve the impedance matching and electromagnetic interference problems

but also collect the pH value quickly and precisely.

关键词

Keywords

references

计算机控制的在线智能酸度测量信号采集问题研究 [J]. 邱士安. 仪表技术与传感器 . 2006(10)

基于高线性模拟光耦器件HCNR200的模拟量隔离板 [J]. 张宝生,王念春. 仪表技术 . 2005(05)

基于IEC 61131-3标准的控制系统及应用[M]. 电子工业出版社 , 林小峰等, 2007

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