摘要
提出了一个基于TMS320VC5402定点DSP的三维运动物体振动信号采集与处理系统。该系统在数据采集方面的最大特点是利用了DSP本身所具有的直接存储器访问(DMA)和多通道缓冲串口(McBSP),最大程度地减小了数据采集对CPU造成的负荷。对所采集到三维振动信号用多子带ADPCM算法进行压缩,数据压缩倍数达到六倍。被采集和处理的信号的动态范围达到72DB。
This paper introduces a 3D mobile vibration signal acquisition and processing system based on TI's fixed point DSP TMS30VC5402.Its characteristic is to use Direct Memory Access and Multichannel Buffered Serial Port ability of VC5402 to achieve data acquisition,which makes the data acquisition process take minimum resource from DSP CPU.We use Subband ADPCM(SBADPCM)algorithm to compress the vibration signal data which achieves 6∶1 compression ratio.The dynamic range of sampled signal is about 72 DB?
出处
《计算机应用研究》
CSCD
北大核心
2002年第12期100-102,134,共4页
Application Research of Computers
