电子设计工程
電子設計工程
전자설계공정
Electronic Design Engineering
2015年
19期
18-20,23
,共4页
振动信号%信号调理%USB接口%便携式%数据采集
振動信號%信號調理%USB接口%便攜式%數據採集
진동신호%신호조리%USB접구%편휴식%수거채집
vibration signal%signal conditioning%USB interface%portable%data acquisition
为记录多路振动信号设计了一款基于USB接口的数据采集系统。该系统包含四路信号调理单元、模数转换单元、以DSP器件为核心的控制单元和采用USB接口的与上位机通信单元。在采集频率不高于300kHz的情况下，系统可实现不间断采集，并将采集到的数据实时传送给上位机进行存储记录，数据采集位宽为14位。系统整体功耗小于2瓦，采用USB接口通过上位机供电，且自身尺寸小，满足便携式要求。
為記錄多路振動信號設計瞭一款基于USB接口的數據採集繫統。該繫統包含四路信號調理單元、模數轉換單元、以DSP器件為覈心的控製單元和採用USB接口的與上位機通信單元。在採集頻率不高于300kHz的情況下，繫統可實現不間斷採集，併將採集到的數據實時傳送給上位機進行存儲記錄，數據採集位寬為14位。繫統整體功耗小于2瓦，採用USB接口通過上位機供電，且自身呎吋小，滿足便攜式要求。
위기록다로진동신호설계료일관기우USB접구적수거채집계통。해계통포함사로신호조리단원、모수전환단원、이DSP기건위핵심적공제단원화채용USB접구적여상위궤통신단원。재채집빈솔불고우300kHz적정황하，계통가실현불간단채집，병장채집도적수거실시전송급상위궤진행존저기록，수거채집위관위14위。계통정체공모소우2와，채용USB접구통과상위궤공전，차자신척촌소，만족편휴식요구。
In this paper, a design of data acquisition system for recording multi-channel vibration signals based on USB interface is proposed. The system consists of four parts, including signal conditioning unit, analog-digital conversion unit, control unit using DSP as the core and communication unit using the USB interface. In the case of acquisition rate is not higher than 300spps, the system can achieve continuous acquisition and real-time data acquisition to be transferred to the host computer. Data acquisition is 14 bits wide. Overall system power consumption is less than 2 watts. The system is powered using the USB interface from the PC, and meet requirements of small size and portable.
