基于USB2.0的小型工业CT数据采集系统的研制  

Development of Data Acquisition System for Small-scale Industrial CT Based on USB2.0

作　　者：高富强[1,2] 唐维[2] 陈晟飞[2] 戴正国[3] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室ICT研究中心 [2]重庆大学自动化学院 [3]中国人民解放军63867部队

出　　处：《核电子学与探测技术》2012年第4期402-406,492,共6页Nuclear Electronics & Detection Technology

摘　　要：针对小型工业CT系统探测器数量不多、体积小、传输距离不长等特点,设计了一种基于小间隔探测器、FPGA和USB2.0的数据采集系统。系统选取X-CARD 0.2-256G作为探测器芯片。主控芯片FPGA控制前端探测采集的时序并缓存数据,再通过USB接口芯片EZ-FX2LP CY7C68013A把数据上传给PC机便于以后的图像重建。该系统已通过实验验证,结果表明USB传输速度可达33.2 MB/s,能满足小型工业CT数据采集的要求。In order to meet the requirements of the small - scale industrial CT of small size, needing small quantities of detector, in short - transmission distance, it designs a kind of data acquisition system based on a small interval detector, FPGA and USB2.0. The system pick X -CARD 0.2 -256G as the detector chip. FPGA is the master chip, which controls the timing of data - collecting - block and detecting - block, storages the data, then sends it to host PC through the USB interface chip EZ - FX2LP CYTC68013A for image reconstruction. The system has been verified by experiment, and the results show that the USB transfer speed can reach 33.2 MB/s. The system satisfies the requirements of data acquisition for small - scale industrial CT.

关 键 词：工业CT 数据采集 USB2.0 X—CARD 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]