电位测定振荡反应虚拟仪器的研制与推广  

The development and application of virtual instrument for determining oscillating reaction by potential

作　　者：孟虎[1] 李将渊[1] 汤永怀[1] 郭德鹏[1] 

机构地区：[1]西华师范大学化学化工学院,应用化学与环境污染控制技术重点实验室,四川南充637002

出　　处：《计算机与应用化学》2009年第11期1491-1496,共6页Computers and Applied Chemistry

基　　金：四川省教育厅资助项目(川教[2005]198号);西华师范大学学生科技创新基金项目资助(2008-58)

摘　　要：运用离子选择性电极、调理电路、DAQ卡和计算机,构建基于LabVIEW 8.0的电位法测定振荡反应虚拟仪器系统,实现自动采集振荡反应系统电位的变化,实时绘制振荡曲线,存储处理测量数据,自动报告测量结果。虚拟仪器可多路同步,方便快捷地用电位法研究振荡反应,系统操作简便、人机界面友好,避免人工处理数据的繁琐,提高了测量的准确性和重现性。系统测定B-Z振荡反应结果表明,能实时同步绘制出双振荡曲线,其表观活化能测定结果相对误差<0.7%。The virtual instrument system for determining oscillating reaction by potential based on LabVIEW 8.0 was constructed by ion selective electrode, homemade adjusting circuit, data acquiring board and computer. It can realize automatically acquiring the potential changes in the oscillation reaction system, real-time drawing oscillation curve, data storage and processing, and automatically reporting the measurement results. The virtual instrument system has advantages of adopting multiplexed operation, sgnchronous operation, conveniently and quickly using potential method to study oscilating reaction, friendly man-machine interface, easily operating and avoiding the complexity of manual processing of data, thus improving the accuracy and repeatability of measure ment. It can synchronously and in real-time draw two-oscillation curve when it is applied to determine the B-Z oscillation reaction, and the relative error of the apparent activation energy measurement is less than 0. 7%.

关 键 词：LABVIEW 振荡反应 虚拟仪器 电位法 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TQ015.9[自动化与计算机技术—控制科学与工程]