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    • 10. 发明申请
    • Density detection using real time discrete photon counting for fast moving targets
    • 使用实时离散光子计数的快速移动目标的密度检测
    • US20060145080A1
    • 2006-07-06
    • US11292093
    • 2005-12-02
    • Victor VerbinskiScott SmithKenneth ValentineJudith MaxwellJeffrey AdamsRyan Shyffer
    • Victor VerbinskiScott SmithKenneth ValentineJudith MaxwellJeffrey AdamsRyan Shyffer
    • G01N23/08
    • G01V5/0016G01N23/02G01V5/0066
    • A system for detecting and graphically displaying a contents of a fast-moving target object comprises: a radiation source, having a position such that at least a portion of radiation emitted from the radiation source passes through the fast-moving target object, the fast-moving target object having a variable velocity and acceleration while maintaining a substantially constant distance from the radiation source and being selected from the group consisting of: a vehicle, a cargo container and a railroad car; a velocity measuring device configured to measure the variable velocity of the fast-moving target object; a detector array comprising a plurality of photon detectors, having a position such that at least some of the at least a portion of the radiation passing through the target object is received thereby, the detector array having a variable count time according to the variable velocity and a grid unit size; a counter circuit coupled to the detector array for discretely counting a number of photons entering individual photon detectors, the counter circuit measuring a count rate according to a contents within the fast-moving target object; a high baud-rate interface coupled to the counter circuit for sending count information from the counter circuit at a rate fast enough to support real-time data transfer therethrough; and a processor coupled to the velocity measuring device and to the high-baud-rate interface, receiving count information from the high baud-rate interface and generating distortion-free image data in real time as a function of the count information and the variable velocity. A method for using the system is also disclosed.
    • 一种用于检测和图形显示快速移动的目标物体的内容的系统包括:辐射源,具有这样的位置,使得从辐射源发出的辐射的至少一部分通过快速移动的目标物体, 具有可变速度和加速度的移动目标物体,同时保持与辐射源基本恒定的距离,并且从包括车辆,货物集装箱和铁路车辆的组中选择; 速度测量装置,被配置为测量所述快速移动的目标物体的可变速度; 包括多个光子检测器的检测器阵列,具有这样的位置,使得穿过目标物体的至少一部分辐射被接收,检测器阵列根据可变速度具有可变计数时间, 网格单位大小; 耦合到所述检测器阵列的计数器电路,用于对进入各个光子检测器的多个光子进行离散计数,所述计数器电路根据所述快速移动目标对象内的内容来测量计数率; 耦合到计数器电路的高波特率接口,用于以足以支持实时数据传输的速率从计数器电路发送计数信息; 以及耦合到速度测量装置和高波特率接口的处理器,从高波特率接口接收计数信息,并且作为计数信息和可变速度的函数实时生成无失真图像数据 。 还公开了一种使用该系统的方法。