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中文摘要：
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＋AMCS5335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。
英文摘要：
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.
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The construction of 2D rotationally invariant wavelets and their application in image edge detection
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