多通道数据采集和分析系统研究文献综述.doc

文献综述
课题名称:多通道数据采集和分析系统研究(下位机)
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2011年3月12日
多通道数据采集和分析系统研究(下位机)
中文摘要
由于数据采集系统的应用范围越来越宽,所涉及到的测量信号和信号源的类型越来越多,对测量的要求也越来越高,国内现在已有不少数据测量和采集的系统,但很多系统存在功能单一、采集通道少、采集速率低、操作复杂,并且对测试环境要求较高等问题。
目前针对多通道数据采集体统的研究主要集中在数据传输的同步性、系统容量及低能耗等特点。人们需要一种应用范围广、性价比高的数据采集系统。
本文主要对目前国内外多通道数据采集系统的研究及发展方向进行分析,并对几种较常用到的多通道数据采集系统的基本情况做了简单的介绍。常用的多通道数据采集系统有运用单片机、DSP、CPLD、FPGA以及基于LabVIEW平台的虚拟仪器。针对目前多通道数据采集体统的研究主要集中在数据传输的同步性、系统容量及低能耗等特点。有些研究虽然在同步性上有所突破,但在系统容量或者能耗方面仍需改进,或者在能耗方面取得一定的成就,但系统的精度或分辨率等均达不到要求。总之,多通道数据采集系统不仅在应用上是多种多样的,它的实现方式也是纷繁复杂的。
关键词:多通道数据采集系统实现方式虚拟仪器
Multi-Channel Data Acquisition and Analysis System
(puter)
Abstract
As the application of data acquisition system is e more and more wide,it means that there is more measuring signal and more kinds of signal source need to be measured, and the requirement of these measurements is also increasingly high. There are quite a few system of data collecting and measuring, but lots of these systems are neither poor in functions,nor lack of acquisition channels, or low in gathering rate, complex to operate, and the most serious problem is that the requirement of test environment is absolutely higher. Nowadays, the research of multichannel data acquisition systems focus on the synchrony of data transmission 、the capacity of system and low consumption of energy. We also need a wide application and high rati