基于CPLD的多路数据采集系统  

Application of CPLD in Multi-Channel Data Acquisition System

作　　者：王芳[1] 严胜刚[1] 陈勇 李芳庆[2] 

机构地区：[1]西北工业大学航海学院,西安710072 [2]第二炮兵工程学院,西安710025

出　　处：《弹箭与制导学报》2005年第SA期407-409,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：提出了一种基于 CPLD 的多路高速实时数据采集系统的新方法。该系统利用4片 AD7655可以实现8通道同步采样或16通道异步采样,其中 CPLD 完成对 A/D 转换的逻辑控制,使用 DSP21160对 A/D 转换数据进行处理。8路同步采样时最大采样频率可达700kHz,16路异步采样时最大采样频率可达350kHz。通过 MAX+PLUSⅡ仿真及实际测试结果表明,所设计的基于 CPLD 的多通道数据采集系统,能够准确有效地进行 A/D 数据采集。A new method of multi-channel,realtime aad high speed data acquisition system based on the CPLD is devel- oped in this paper.4 AD7655s are used to realize 8-channel synchronized sampling or 16-channel asynchronized sam- piing,while the ADC is logically controlled by the CPLD,the converted datas are processed by the DSP21160.The sampling frequency of 8-channel synehronized sampling is up to 700kHz,while that of 16-channel asynchronized sam- piing is up to 350kHz.The timing result simulated by the MAXPLUSⅡ and the practical testing result indicated that the designed multi-channel data acquisition system based on the CPLD is able to effieiently complete the ADC in the practical applications.

关 键 词：数据采集 CPLD DSP A/D 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]