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由加速器周期性产生的X射线经前准直器成形为扇形脉冲束流,透过集装箱后再经过后准直器进入阵列探测器,再由前置放大器放大成形为电压信号送入采样保持电路,经多路选择器送去变换成为一组数字量;再经过一系列的预处理就可形成一列象素。由于集装箱是载于拖动装置上的,随着拖动装置的运动,这一列列的象素就可组成一幅完整的集装箱透视图,这样的一个完整过程由中心管理站统一控制和同步。本文介绍实时扫描数据获取与处理,并给出中心系统管理站的任务需求分析与结构规划。
The X-ray periodically generated by the accelerator is shaped into a fan-shaped pulsed beam by the front collimator, passes through the container and then passes through the collimator into the array detector, and then amplified by the preamplifier to form a voltage signal into the sample-and-hold circuit , Sent by the multiplexer to transform into a set of digital; and then through a series of pre-processing can form a column of pixels. As the container is carried by the dragging device, the pixels in this column form a complete container perspective with the movement of the dragging device. Such a complete process is centrally controlled and synchronized by the central management station. This article introduces real-time scan data acquisition and processing, and gives the central system management station mission needs analysis and structural planning.