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    SYSTEM AND METHOD FOR DETECTION OF RADIATION
    1.
    发明申请
    SYSTEM AND METHOD FOR DETECTION OF RADIATION 有权
    用于检测辐射的系统和方法

    公开(公告)号：US20130013260A1

    公开(公告)日：2013-01-10

    申请号：US13177769

    申请日：2011-07-07

    申请人： Kwong Wing Au ,  Brian C. Krafthefer ,  Eric Eastwold

    发明人： Kwong Wing Au ,  Brian C. Krafthefer ,  Eric Eastwold

    IPC分类号： G06F15/00

    CPC分类号： G01T1/15

    摘要： A system includes a count detector, a communication medium; and a processor coupled to the count detector. The processor continuously receives a plurality of pulses from the count detector. A pulse indicates a detection of a radiation unit emitted from a source material or a background. The processor determines a first period of time based on an expected range of speed of a carrier of the source material, and integrates the plurality of pulses over the first period of time, thereby yielding an integrated count associated with a time at a midpoint of the first period of time. The processor creates a continuous time series of count profiles from a plurality of integrated counts that are computed using a plurality of windows within the first period of time, and shifts each window over a second period of time. The second period of time is shorter than the first period of time. The processor estimates a background count from a history of the count profiles, computes an adaptive threshold based on the estimated background count, and detects the source material when consecutives of the integrated counts exceed the adaptive threshold.

    摘要翻译： 系统包括计数检测器，通信介质; 以及耦合到计数检测器的处理器。 处理器从计数检测器连续接收多个脉冲。 脉冲表示从源材料或背景发射的辐射单元的检测。 处理器基于源材料的载波的预期速度范围来确定第一时间段，并且在第一时间段内对多个脉冲进行积分，由此产生与在中间点处的时间相关联的积分计数 第一段时间。 处理器从在第一时间段内使用多个窗口计算的多个积分计数器创建连续的时间序列计数轮廓，并且在第二时间段内移动每个窗口。 第二个时间段比第一个时间段短。 处理器根据计数曲线的历史估计背景计数，基于估计的背景计数来计算自适应阈值，并且当积分计数的连续执行超过自适应阈值时检测源材料。

    Process control system and method
    2.
    发明授权
    Process control system and method 失效
    过程控制系统和方法

    公开(公告)号：US4825077A

    公开(公告)日：1989-04-25

    申请号：US121099

    申请日：1987-11-16

    申请人： Riad A. Tawil ,  David H. Sicking

    发明人： Riad A. Tawil ,  David H. Sicking

    IPC分类号： G01T1/15 ,  G01T1/208 ,  G01N23/06

    CPC分类号： G01T1/208 ,  G01T1/15

    摘要： A system and related method for sensing a parameter of a medium by means of radiation attenuation, the system including a radiation source for emitting radiation that will be attenuated as a function of the parameter upon passage through the medium and a radiation detector operatively positioned to detect the radiation that will be attenuated as aforesaid, and the system being further characterized by the detector comprising a scintillator probe for producing an electrical current output proportionally representative of detected radiation, a current integrator for continuously integrating the electrical current output of the scintillator probe, the current integrator having an input for receiving the electrical current output of the scintillator probe and an output for producing an electrical output representative of the integral of curernt received at the input thereof, a charge injector for supplying to the input of the current integrator current pulses of predetermined total charge and of opposite polarity relative to the electrical current output of the scintillator probe in response to the output of the current integrator having a predetermined characteristic, and a detector output for generating count signals at a frequency proportionally representative of the frequency at which the current pulses are supplied to the input of the current integrator by the charge injector.

    摘要翻译： 一种用于通过辐射衰减来感测介质的参数的系统和相关方法，所述系统包括用于发射辐射的辐射源，所述辐射源将在通过介质时作为参数衰减的功能;以及辐射探测器，其被可操作地定位以检测 将如上所述将被衰减的辐射，并且该系统的特征还在于检测器包括用于产生与检测到的辐射成比例地代表的电流输出的闪烁体探针，用于连续积分闪烁体探针的电流输出的电流积分器， 具有用于接收闪烁体探针的电流输出的输入的电流积分器和用于产生代表在其输入处接收的固化的积分的电输出的输出;电荷注入器，用于向电流积分器的输入提供电流脉冲 预定总费用 并且响应于具有预定特性的电流积分器的输出，相对于闪烁体探针的电流输出具有相反极性的检测器输出;以及检测器输出，用于以比例地代表电流脉冲的频率的频率产生计数信号 通过电荷注入器提供给当前积分器的输入。

    Radiation measuring device
    3.
    发明授权
    Radiation measuring device 失效
    辐射测量装置

    公开(公告)号：US4591984A

    公开(公告)日：1986-05-27

    申请号：US406514

    申请日：1982-08-09

    申请人： Issei Mori

    发明人： Issei Mori

    IPC分类号： G01T1/15 ,  G01T1/17 ,  G06F15/42

    CPC分类号： G01T1/171 ,  G01T1/15

    摘要： A radiation measuring device comprising a radiation detector for detecting radiation quantum arriving in the Poisson distribution, a phase height analyzer for analyzing a height of an output signal from the detector to extract signal components at a level within a predetermined level, converter for integrating an output signal from the detector to produce pulses of which the number corresponds to the integrated value, a switch for selecting the output signal from the analyzer when the number of arrival photons is smaller than a predetermined value and for selecting the output signal from the converter when the number of photons is larger than the predetermined value and a counter for counting output pulses of the selected analyzer or counter.

    摘要翻译： 一种辐射测量装置，包括用于检测到达泊松分布的辐射量子的辐射检测器，相位高度分析器，用于分析来自检测器的输出信号的高度，以提取在预定电平内的电平的信号分量，用于对输出进行积分 来自检测器的信号产生数字对应于积分值的脉冲，当到达光子数量小于预定值时用于选择来自分析器的输出信号的开关，以及当来自转换器的输出信号 光子数大于预定值，计数器用于计数所选择的分析器或计数器的输出脉冲。

    Digital radiation dosimeter with improved integrating pulse ionization chamber
    4.
    发明授权
    Digital radiation dosimeter with improved integrating pulse ionization chamber 失效
    具有改进的集成脉冲离子室的数字辐射剂量

    公开(公告)号：US3712983A

    公开(公告)日：1973-01-23

    申请号：US3712983D

    申请日：1971-11-09

    申请人： ATOMIC ENERGY COMMISSION

    发明人： BORKOWSKI C ,  ROCHELLE J

    IPC分类号： G01T1/15 ,  G01T1/185 ,  G01T1/18

    CPC分类号： G01T1/15 ,  G01T1/185

    摘要： AN IMPROVED DIGITAL RADIATION DOSIMETER OF THE OSCILLATING IONIZATION CHAMBER TYPE INCLUDING A GAS DIODE CONNECTED IN SERIES WITH THE CHAMBER ANODE HAS BEEN PROVIDED WITH IMPROVED OPERATION AND MINIATURIZATION OF THE DETECTOR CHAMBER. THIS IS MADE POSSIBLE BY A CIRCUIT THAT ADDS STROBE PULSES TO THE NORMAL DC CHAMBER BIAS VOLTAGE SO AS TO ALLOW THE GAS DIODE TO DISCHARGE EVEN THOUGH THE ACTIVE CHAMBER VOLUME IS NOT LARGE ENOUGH TO PRODUCE SUFFICIENT DIODE BIAS CURRENT AT LOW RADIATION EXPOSURE RATES.