关联标定方法在多路数据采集系统通道串扰中的应用  

Application of Correlation Calibration Method in Crosstalk Between Channels for Multi Channel Acquisition System

作　　者：杜红棉[1,2] 祖静[1,2] 

机构地区：[1]中北大学,山西太原030051 [2]仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《仪表技术与传感器》2010年第12期89-91,共3页Instrument Technique and Sensor

摘　　要：针对多参数、低功耗、小体积的应用环境,设计了具有3种不同采样频率信号的多路数据采集系统,给出了详细的硬件组成及模拟开关设计电路,在分析模拟开关使用特性的基础上,针对模拟开关通道之间切换时存在的串扰问题,提出了关联标定的软件后处理方法。实验结果表明该方法可有效去除模拟开关通道之间的串扰问题。According to the application environment for multi-parameters,low power and small volume,a multi-channel data acquisition system used for three different sampling frequencies was designed.And its hardware composition and analog switch circuit were presented.Based on analyzing the using characteristics of analog switch and its crosstalk between channels during switching,a correlation calibration method with software post-processing was put forward.Experimental results show that the crosstalk problem between channels can be removed effectively.

关 键 词：多路 数据采集 串扰 关联标定 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]