光寻址电位传感器测量系统的研究  

Research of Light Addressable Potentiometric Sensors Measure System

作　　者：张志勇[1] 陈兴梧[1] 牛文成[2] 陈诚[1] 孙兴文[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]南开大学信息技术科学学院,天津300071

出　　处：《仪表技术与传感器》2003年第12期34-36,54,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(60176028)

摘　　要：在生物医学及化工等领域的研究及应用中,对于与生物分子、生物过程相关的参数以及化学反应中离子浓度的检测是非常重要的研究手段。但是,传统的测量方法和仪器难以做到小型化,极大限制了上述检测方法的应用,因此急需解决小型化问题。光寻址电位传感器(LAPS)是基于半导体技术的传感器,因此可以做到小型化,较好的解决了此问题。扼要介绍了光寻址电位传感器的发展历程,阐述了该传感器测量系统的工作原理,以及基于DSP的LAPS测量系统的组成,并使用该系统对溶液中pH值的分布进行了实际测量,得到了溶液的pH值分布图。On research and applications in fields of biomedicine and chemical industry,the check-up method on parameters in relation to biological molecules or process and on ionic concentration in chemical reactions is a kind of greatly important means.However, conventional metrical methods and instruments can hardly lead to miniaturization, therefore, it seriously restricts the application of the methods mentioned above.light Addressable Potentiometric Sensors (LAPS) is a sort of sensors based on semiconductor technique, so it may contribute to miniaturization and solve the problem.This dissertation compendiously introduces the development of LAPS, expatiates the working principle and buildup of such measuring system, which is based on DSP, and then uses this system to measure the distribution of the pH value of the solution.

关 键 词：离子浓度检测 光寻址电位传感器 LAPS PH值 光电压 光调制频率 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH832.3[自动化与计算机技术—控制科学与工程]