工业CT数据采集系统  

The data acquisition system of ICT

作　　者：高富强[1] 安康[2] 卢华[2] 曹鹏[2] 江仁清[2] 高福兵[3] 

机构地区：[1]重庆大学ICT研究中心,重庆400030 [2]重庆大学自动化学院,重庆400030 [3]重庆通信学院,重庆400035

出　　处：《核电子学与探测技术》2008年第3期556-559,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然基金项目(60672098);国家863计划项目(2006AA04Z104)

摘　　要：工业CT机中需要对数百通道微弱光信号同时进行数据采集传输,本文介绍的系统是为满足这一要求而设计;系统采用FPGA+20位积分转化芯片模式构建探测部分,采用FPGA+AMCCS5335模式主控采集部分;运用多级缓存机制解决了实际应用中出现的数据阻塞、丢失问题;该设计已应用于重庆大学ICT中心的多台工业CT机中,取得了良好的效果。The purpose of the design is to develop a data acquisition system which can be used to collect and transmit hundreds of channels of weak light signal data at the same time, so as to meet the need of industrial computer tomography. The system is composed of two parts, detection circuit and acquisition circuit FPGA and 20 bit integral and conversion chips are the primary chips adopted in detection circuit, while the primary chips for acquisition circuit are FPGA and AMCCS55335. The problems, data jam-up and data drop were solved by using multilevel memorizer. A large number of experiments have proved that this system has very high precision and transmission reliability. The design has been applied in sever- al industrial computer tomography machines produced by the industrial computer tomography research center of Chongqing University, and its effectiveness is well apprised.

关 键 词：数百通道 FPGA PCI 数据采集传输 多级缓存机制 

分 类 号：TB96[机械工程—光学工程]