| 智能工业pH值变送器的设计 |
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| 引用本文： | 赵玉宝,张纪明,李惠军.智能工业pH值变送器的设计[J].实验技术与管理,2006,23(9):45-47,50. |
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| 作者姓名： | 赵玉宝 张纪明 李惠军 |
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| 作者单位： | 1. 山东大学,信息科学与工程学院,济南,250061
2. 山东大学,控制科学与工程学院,济南,250061 |
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| 摘 要： | 该文介绍了一种采用89C52单片机设计的pH值智能变送器,将工业现场的0～14 pH值变送为4～20 mA的标准信号输出.该变送器采用玻璃电极作为测量传感器,采用两片7650运放组成的差动电路作为输入电路,提高了抗干扰能力,采用Ptl00热电阻测量被测介质的温度,对pH值进行温度补偿,提高了测量精度.文中介绍了硬件电路的设计原理及软件框图.
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| 关 键 词： | pH值 智能变送器 89C52单片机 抗干扰 |
| 文章编号： | 1002-4956（2006）09-0045-03 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2005-12-122006-03-02 |
The design of an intelligent pH transducer in industry |
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| ZHAO Yu-bao,ZHANG Ji-ming,LI Hui-jun.The design of an intelligent pH transducer in industry[J].Experimental Technology and Management,2006,23(9):45-47,50. |
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| Authors: | ZHAO Yu-bao ZHANG Ji-ming LI Hui-jun |
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| Abstract: | This paper introduces the design of an intelligent pH transducer based on 89C52 singlechip. The transducer transforms 0 - 14 pH to 4 - 20 mA standard signal as output in industrial fields. It uses glass electrode as geodesic sensor. It uses differential electro circuit composed of two 7650 amplifiers as input electrocircuit, which improves the level of anti-jamming. It also uses thermic resistance Pt100 to measure temperature as expiation, which improves the precision of measuring. This paper introduces the principle of hardware design and flow chart of software design. |
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| Keywords: | pH value intelligent transducer 89C52 singlechip anti- jamming |
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