電器設(shè)備檢測中信號采集與處理方法的對比分析

1、電器設(shè)備檢測中信號采集與處理方法的對比分析摘要：本文主要介紹了基于單片機(jī)、DSP、數(shù)據(jù)采集卡的信號采集與處理系統(tǒng)，并對不同的處理方法進(jìn)行了分析比較，找出了各自應(yīng)用場合及特點(diǎn)。設(shè)計(jì)一種基于DSP的高速數(shù)據(jù)采集與處理系統(tǒng)方案，給出了方案構(gòu)成的硬件系統(tǒng)平臺設(shè)計(jì)，并詳細(xì)闡述了各硬件系統(tǒng)平臺的具體構(gòu)成。對采集后的數(shù)字信號的后續(xù)處理做了簡要介紹，并給出了數(shù)字下變頻模塊的具體實(shí)現(xiàn)，利用嵌入式邏輯分析儀測試并驗(yàn)證了AD采樣信號的正確性。該數(shù)據(jù)采集與處理系統(tǒng)具有一定的通用性和可擴(kuò)展性，具有一定的工程應(yīng)用價(jià)值。最后對DSP技術(shù)的未來發(fā)展進(jìn)行展望。關(guān)鍵詞： 單片機(jī) 數(shù)據(jù)采集卡 DSP 數(shù)據(jù)采集與處理Title Co

2、mparative analysis of signal acquisition and processing method in the electrical equipment testingAbstractThis paper mainly introduces several signal acquisition and processing systems, which are based on different processor such as SCM, DSP, the data acquisition card. Those processing methods are a

3、nalyzed and compared, and respective characteristics and fields each applicable to are found.A scheme of the high speed data acquisition and processing system based on DSP is introduced in the paper. The design of hardware system is proposed and the composition is described in detail. The processing

4、 of the latter digital signal acquisited is briefly introduced and the realization of digital down conversion is given. The sampling signal is tested and verified correctly though embed-ded logic analyzer. The data acquisition and processing system has some universality and expansibility and applica

5、tion value in project.At last, the paper also discusses the development of DSP in the future.Keywords： Single Chip Micyoco（SCM） Data Acquisition CardDigital Signal Processing（DSP） Data acquisition and processing目 次1緒論11.1電器設(shè)備檢測的信號采集與處理11.2本課題主要研究工作22常用的幾種不同的信號采集與處理方案22.1單片機(jī)22.1.1 單片機(jī)的基本概念22.1.2 單片機(jī)的

6、應(yīng)用領(lǐng)域32.1.3 基于單片機(jī)的信號采集與處理特點(diǎn)52.2數(shù)據(jù)采集卡62.2.1 數(shù)據(jù)采集卡的基本概念62.2.2 數(shù)據(jù)采集卡的應(yīng)用領(lǐng)域62.2.3 基于數(shù)據(jù)采集卡的信號采集與處理的特點(diǎn)62.3DSP72.3.1 DSP的基本概念72.3.2 DSP的應(yīng)用領(lǐng)域92.3.3 基于DSP的信號采集與處理的特點(diǎn)102.4三種采集方案的對比分析103基于DSP的高速數(shù)據(jù)采集與處理系統(tǒng)113.1系統(tǒng)的硬件設(shè)計(jì)113.1.1 高速AD采樣電路113.1.2 FPGA設(shè)計(jì)及功能123.1.3 DSP電路設(shè)計(jì)143.2系統(tǒng)軟件設(shè)計(jì)153.2.1 軟件設(shè)計(jì)153.2.2 信號處理算法153.2.3 系統(tǒng)實(shí)現(xiàn)與測試1