摘要
介绍了一种以数字信号处理器（ＤＳＰ）为ＣＰＵ 的分布式高速、高精度多通道模拟及视频信号实时采集与处理系统， 可广泛应用于实时的多通道声、光信号（包括图像）检测与处理。该系统主、从板均采用ＤＳＰ作为ＣＰＵ，可实现实时处理；主、从板间的信息交换既可利用适于少量数据灵活传送的双向ＦＩＦＯ，又可利用适于大数据量快速传送的ＤＭＡ；用户程序可灵活方便地从ＰＣ机上下载避免了写入ＥＰＲＯＭ
Introduces the hardware and software structures of a high speed and high precision distributed data acquisition and processing system based on DSP for analog and video signals, this system can extensively be applied to data acquisition and processing of multichannel acoustic and optical signals. Both the master board and the slave board use DSP chips as the CPU in order to do real time processing. User program can conveniently be downloaded from PC. There are two data transfer methods between the master and the slave boards: DMA(direct memory access) and FIFO. DMA is preferably used for block or massive memory transfer, and FIFO is more appropriate to handle small volume data flow.
出处
《数据采集与处理》
CSCD
1999年第4期509-512,共4页
Journal of Data Acquisition and Processing
关键词
数据采集
数字信号处理器
视频信号
图像处理
data acquisition
digital signal processor
analog to digital conversion
video signal
