摘要
给出了一种基于声卡的多通道数据采集装置和系统。该装置首先将输入信号转换成频率信号,由声卡采集频率信号,然后将采集到的频率信号用软件还原成输入信号,解决了声卡不能采集低频或直流信号的问题,同时利用一片单片机控制多路模拟开关,并由该单片机向声卡发出多路识别信号实现了多路信号采集功能。
This thesis offers a kind of multiple channel data collection device and system based on the SBC. The device first converts input signals into frequency signals,and sound blaster audio card collects frequency signals and to the frequency signals collected is restored into input signals by software. By doing so,it resolves the problem which the SBC can＇t collect low frequency signals or dc signals; meanwhile,a piece of MCU controls the AMUX,and this SBC sends poly identification signals to SBC,so the function of poly signals collection is achieved.
出处
《电子器件》
CAS
北大核心
2014年第2期378-380,共3页
Chinese Journal of Electron Devices
关键词
电压频率转换
声卡
虚拟仪器
多通道
数据采集
VFC
sound blaster audio card（SBC）
virtual instrument
multiple channel
data collection
