现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
24期
134-135,139
,共3页
ARM%ADS1256%模拟开关%检波器
ARM%ADS1256%模擬開關%檢波器
ARM%ADS1256%모의개관%검파기
ARM%ADS1256%analog switch%radiodetector
介绍了以ARM内核S3C2440为处理器,24位自带模拟开关的ADS1256芯片为A/D转换和信号输入通道选择,利用其特性、工作原理来设计具有高精度、多通道、实时操作性强的地震数据采集系统电路。数据通过桥式低通滤波输入,有效地抑制了长导线共模信号,并且大大提高了整个电路抗电磁干扰能力,从而可以实现地震数据采集系统的高精度、高质量、低功耗和便携式等特点。
介紹瞭以ARM內覈S3C2440為處理器,24位自帶模擬開關的ADS1256芯片為A/D轉換和信號輸入通道選擇,利用其特性、工作原理來設計具有高精度、多通道、實時操作性彊的地震數據採集繫統電路。數據通過橋式低通濾波輸入,有效地抑製瞭長導線共模信號,併且大大提高瞭整箇電路抗電磁榦擾能力,從而可以實現地震數據採集繫統的高精度、高質量、低功耗和便攜式等特點。
개소료이ARM내핵S3C2440위처리기,24위자대모의개관적ADS1256심편위A/D전환화신호수입통도선택,이용기특성、공작원리래설계구유고정도、다통도、실시조작성강적지진수거채집계통전로。수거통과교식저통려파수입,유효지억제료장도선공모신호,병차대대제고료정개전로항전자간우능력,종이가이실현지진수거채집계통적고정도、고질량、저공모화편휴식등특점。
The circuit,which has high accuracy,multi-channel and strong real-time operational performance,and takes ARM kernel S3C2440 as its processor,and 24-bit ADS1256 chip with the analog switch as its A/D conversion and signal input channel,was designed for a seismic data acquisition system. The bridge low-pass filtering input of data effectively inhibits the common mode signal through long wire and greatly improves the ability of the whole circuit resistance against electromagnetic in-terference,by which the characteristics of high precision,high quality,low consumption and portability were realized for the seismic data acquisition system.