摘要
鉴于DSP在结构和技术性能上的特点,本文提出了一种基于DSP的多通道同步数据采集系统的设计方法。该系统采用锁相环(PLL)实时频率跟踪实现数据的同步采样,采用专门的A/D芯片实现多通道的同步,采用专门的开关电容滤波器提高采样系统的性能。通过初步的试验,验证了系统的性能,为进一步的研究奠定了基础。
In consideration of the features of DSP on its structure and performance, one design method of Multi-channel simultaneous DAS based on DSP is proposed. Simultaneous data sample is achieved on account of adopting real time frequency tracking by PLL (Phase Lock Loop) . The synchronization of multi-channel is realized on account of adopting specific A/D chip. And adopting the specific switch- capacitor filter enhance the system performance. The system characteristics is checked in elementary experimentation, which open the way to further study.
出处
《微计算机信息》
北大核心
2007年第03Z期167-169,共3页
Control & Automation
基金
国家自然科学基金重点项目(60534040)
关键词
DSP
多通道
锁相环
Digital Signal Processor,Multi-channel,Phase Lock Loop