文档介绍：河北大学
硕士学位论文
锅炉水硬度自动检测装置的研究与设计
姓名:李盼盼
申请学位级别:硕士
专业:通信与信息系统
指导教师:王文理
2011-06
摘要
摘要
锅炉在日常生活和工农业生产中是一种常见设备,它以水作为媒介,是燃料燃烧释
放的热能通过媒介水传递出去,用于生活、工业所需的蒸汽或者热水。因此锅炉水水质
的分析检测越来越受到人们的关注,水质达不到国家规定会使锅炉所造成的后果,概括
为结垢、腐蚀和汽水共腾,会引起设备事故频繁发生进而增加了维修成本,因此解决锅
炉水质检测和处理问题一直是科研人员关注的课题。
离子选择电极是近年来获得广泛应用的电化学传感器。它将溶液中的离子活度量转
化为电位量,借助于测量电极的电动势,
单片机为集中控制核心,通过离子选择性电极技术及电位分析法的相关知识,实现对锅
炉水硬度的检测报警。主要包括离子选择性电极电压信号的读取,单片机对电压值的采
集分析及对整个装置的控制等。选取测量准确、速度效率高的 INA116 测量电路,保证
了电极信号的准确快速读取。采用二次标准加入法,在 S 斜率未知的情况下计算试液离
子浓度,同时由于其分析方法的特殊性,缩短了装置在一个测量周期内的测量时间,减
小了温度等因素对测量结果的影响,进一步解决了测量浓度的精准度问题。使用单片机
C8051F020 对数据采集分析,程序编写中采用模块化结构和相应的文档说明,分级驱动,
软件设计实现了测试仪多种智能化功能,保证了测量的实时性。为了能得到更普及的使
用,在各部分器件的选取和使用上应该更注重实用性和廉价性,适合作为产品推广到工
业锅炉用水硬度检测的生产实际中。

关键词锅炉水离子选择性电极二次标准加入法 INA116
I
Abstract
Abstract
Boiler is mon device in our daily lives and in industrial and agricultural production.
It takes water as a medium. The heat that released by bustion passed out by the water.
It is required for domestic, industrial steam or hot water. Therefore, the analysis of boiler
water testing get more and more attention, the consequences that the water quality can not
meet the national regulation summarized as scaling, corrosion and priming .They will cause
frequently equipment accidents and thus increased maintenance cost, thus solving the boiler
water testing and treatment has been the subject of concern to researchers.
Ion-selective electrode is a kind of electrochemical sensor which is widely applied in
recent years. It transformed the ion living measure of the solution into potential value, and by
means of measuring value of the Ion-selective electrode, we can directly calculate the ion
concentration measured. In this paper, we take the single chip as centralized control core, and
then we realize the hardness of boiler water detection alarm through the knowledge of the
ion-selective electrode technology and potential analysis. It mainly includes reading