八通道可变增益高速数据采集系统  

Eight-channel variable gain data acquisition system

作　　者：黄新栋[1] 王新平[1] 陈元林[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《电子技术应用》2009年第1期47-49,共3页Application of Electronic Technique

摘　　要：针对多通道超声波应用提出了一种USB+FPGA+DSP的架构,模拟前端可实现8通道高速数据采集,并可实现线性增益和可变采样率。FPGA为系统的控制核心,同时进行信号预处理方面的工作,而DSP着重于复杂算法的应用。最后通过已知信号对整个系统进行测试,验证了该系统性能良好,具有很高的实用价值。The architecture of a multi-channel ultrasonic application system is proposed. The analog part of the system implements eight-channel high-speed data acquisition, and the gain and sample rate can be changed. The FPGA is the controller of the system and realizes signal-processing at the same time. The DSP realizes complicated arithmetic. The system is tested and the experimental results show that the system has significant value for practical application,and attains to the demand of high-performance system.

关 键 词：FPGA DSP USB 超声波 高速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]