基于非线性误差修正的智能水质检测仪的研制  

Development of Intelligent Water Detecting Instrument Based on Non-linearity Correction

作　　者：唐露新[1] 阳仲伯[1] 陈辉[1] 邓金花[2] 傅研芳[2] 

机构地区：[1]广东工业大学信息工程学院,广东广州510006 [2]广东环凯微生物科技有限公司,广东广州510663

出　　处：《计算机测量与控制》2011年第1期224-226,共3页Computer Measurement &Control

基　　金：广东省自然科学基金项目(05001838)

摘　　要：根据光度法原理,设计了一种高精度的智能化水质检测仪,阐述了智能化水质检测仪的硬件、软件组成,对软件上的数据处理关键技术进行了详细的分析,采用单色LED发出特定波长的光,实现对水质参数的测量,通过分析测量过程中的主要误差干扰,提出滤除干扰和修正误差的方法,通过分析吸光度和溶液浓度的函数关系,采用曲线拟合技术建立两者之间的数学模型;实际应用表明,本仪器具有调试简单快速、测量精度高和可靠性高等特点,具有良好的应用前景。According to spectrophotometry principle, a high precise intelligent water detecting instrument was designed, the hardware and software based on intelligent water detecting instrument is introduced, gives a details analysis about the key technology for data process ing of software, a specific wavelength of light was issued with monochromatic LED, for realizing measurement of the water quality parameters, by analyzing the major error of the measurement in process, proposing a method of interference elimination and amend error, by analy zing the relationship of absorbance and concentration, establishing the mathematical model by using curve-fitting. Practical application showed that this instrument has features, such as debug simple and rapid, high accuracy and high reliability, and has good application prospects.

关 键 词：智能化 水质检测仪 光度法 误差修正 数字滤波 曲线拟合 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]