Interfacing of spectrophotometric detector to a personal computer via an audio card for a flow injection system

Laboratory Robotics and Automation Pub Date : 2000-07-14 DOI:10.1002/1098-2728(2000)12:3<138::AID-LRA4>3.0.CO;2-L

Mana Amornthammarong, Knadej Jareonsutasinee, Duangjai Nacapricha

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Abstract

This work describes the use of an audio card for interfacing a spectrophotometer with a personal computer (PC). Digital recording on the computer was carried out using a voltage-controlled oscillator (VCO) and an audio card primarily installed in a multimedia PC. The output voltage of the spectrophotometer was transformed to frequency by the VCO. The audio card, linked to the VCO, converts the VCO output to digital data. An executable program named SigREC was written in C language using Microsoft Visual C++ 5.0 compiler to record the data.

The interfacing system was tested and compared with a chart recorder to record signals from a flow injection system with a spectrophotometer as a detector. The audio card system gave a better recording precision (RSD = 1.8%) when compared to the chart recorder (RSD = 2.5%). © 2000 John Wiley & Sons, Inc. Lab Robotics and Automation 12:138–141, 2000

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用于流动注射系统的分光光度检测器通过声卡与个人计算机的接口

本工作描述了使用声卡将分光光度计与个人计算机(PC)连接起来。计算机上的数字录音是使用压控振荡器(VCO)和主要安装在多媒体PC中的声卡进行的。通过压控振荡器将分光光度计的输出电压转换为频率。声卡连接到VCO，将VCO输出转换为数字数据。采用Microsoft Visual c++ 5.0编译器，用C语言编写了SigREC可执行程序来记录数据。对接口系统进行了测试，并与图表记录仪进行了比较，以分光光度计为检测器记录流动注射系统的信号。与图表记录器(RSD = 2.5%)相比，声卡系统提供了更好的记录精度(RSD = 1.8%)。©2000 John Wiley &儿子,Inc。实验室机器人与自动化，2000

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Laboratory Robotics and Automation

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