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    • 2. 发明授权
      US5274578A Circuit and method for normalizing detector circuit 失效
    • Circuit and method for normalizing detector circuit
    • 用于归一化检测器电路的电路和方法
    • US5274578A
    • 1993-12-28
    • US850255
    • 1992-03-12
    • Jon C. Noeth , James E. Robertson , Terry L. Zumwalt , Glenn T. Mortland , David O. Box
    • Jon C. Noeth , James E. Robertson , Terry L. Zumwalt , Glenn T. Mortland , David O. Box
    • G01D3/02 , G01D18/00 , H04N5/33 , H04N5/365 , G06F15/31
    • G01D18/006 , G01D3/022 , H04N5/3655 , H04N5/33
    • A dynamic detector normalization circuit for normalizing detector output data using detector-error-correcting offset and gain coefficients that are updated in real time. The offset/gain coefficients are computed by a coefficient processor (20) at selected update intervals based on detector responses to a reference source. The coefficient processor averages detector reference responses over a number of update intervals to obtain updated offset/gain coefficients with greater precision than that available from the detector network. The detector normalization circuit (10) includes offset addition logic (12) and gain coefficient logic (14) for reading-out the offset/gain coefficients stored in respective RAMs (13, 15). For each detector output sample received by the detector normalization circuit (10), an offset addition operation 40 adds to the sample the MS bits of the offset coefficient. After the addition operation, the LS bits of the offset coefficient (representing increased precision available from the offset coefficient) are concatenated, and after underflow/overflow protection (42), an offset-corrected detector sample is obtained. A gain multiplication operation (50) multiplies the offset-corrected detector sample by the gain coefficient to obtain an offset/gain-corrected detector sample. After discarding LS bits representing unnecessary precision, and range-clipping (60), the normalization circuit (10) outputs normalized detector data with the desired precision. The detector normalization technique is described in connection with an exemplary application for normalizing thermal detector array output in a thermal imaging system.
    • 一种动态检测器归一化电路，用于使用实时更新的检测器误差校正偏移和增益系数对检测器输出数据进行归一化。 基于对参考源的检测器响应，偏移/增益系数由系数处理器（20）以选定的更新间隔计算。 系数处理器在多个更新间隔上对检测器参考响应进行平均，以获得比从检测器网络可用的精度更高的精度的更新的偏移/增益系数。 检测器归一化电路（10）包括用于读出存储在各个RAM（13,15）中的偏移/增益系数的偏移加法逻辑（12）和增益系数逻辑（14）。 对于由检测器归一化电路（10）接收到的每个检测器输出样本，偏移相加操作40向该采样添加偏移系数的MS位。 在相加操作之后，将偏移系数的LS位（表示从偏移系数得到的增加的精度）连接起来，并且在下溢/溢出保护（42）之后，获得偏移校正的检测器样本。 增益乘法运算（50）将经偏移校正的检测器样本乘以增益系数，以获得偏移/增益校正的检测器样本。 归一化电路（10）在丢弃表示不必要的精度的LS比特和范围限幅（60）之后，以所需的精度输出归一化的检测器数据。 结合用于在热成像系统中归一化热检测器阵列输出的示例性应用来描述检测器归一化技术。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 6. 发明授权
      US6021169A Feedwater control over full power range for pressurized water reactor steam generators 有权
    • Feedwater control over full power range for pressurized water reactor steam generators
    • 给水反应堆蒸汽发生器的全功率范围的给水控制
    • US6021169A
    • 2000-02-01
    • US176799
    • 1998-10-22
    • James E. Robertson , Deva R. Chari , Stephen J. Wilkosz
    • James E. Robertson , Deva R. Chari , Stephen J. Wilkosz
    • G21D3/00 , F22B35/00 , G21D3/14 , G21C7/32 , G21C7/00 , G21C7/36
    • G21D3/14 , F22B35/004 , G21Y2002/201 , G21Y2002/205 , G21Y2002/304 , G21Y2004/30 , G21Y2004/401 , G21Y2004/403 , Y02E30/40
    • A feedwater control system and method for a pressurized water reactor steam generating system having first and second output signals. The first output signal is determined by first and second input signals, and, when combined with a third input signal automatically controls at least one feedwater pump and first designated valves which regulate water flow from the one or more feedwater pumps to a steam generator when a steam generator steam load and reactor are operating at a first predetermined power level. The first input signal is determined by a downcomer feedwater flow differential pressure. The second input signal is determined by a reactor power level. The third input signal is determined by a steam generator level. The second output signal, determined by a steam generator water level, automatically controls at least one startup feedwater control valve when the steam generator steam load and the reactor are operating at a second predetermined power level. In a preferred embodiment, the first designated valves include at least one economizer feedwater control valve and at least one downcomer feedwater control valve. Also, in a preferred embodiment, the first predetermined power level is between about 5 and about 20 percent, and the second predetermined power level is between zero and about 5 percent.
    • 一种具有第一和第二输出信号的加压水反应堆蒸汽发生系统的给水控制系统和方法。 第一输出信号由第一和第二输入信号确定，并且当与第三输入信号组合时，自动控制至少一个给水泵和第一指定阀，其将来自一个或多个给水泵的水流调节到蒸汽发生器 蒸汽发生器蒸汽负载和电抗器工作在第一预定功率水平。 第一输入信号由降液管给水流量差压决定。 第二输入信号由电抗器功率电平决定。 第三输入信号由蒸汽发生器水平确定。 当蒸汽发生器蒸汽负载和电抗器工作在第二预定功率水平时，由蒸汽发生器水位确定的第二输出信号自动控制至少一个启动给水控制阀。 在优选实施例中，第一指定阀包括至少一个节能器给水控制阀和至少一个降液管给水控制阀。 而且，在优选实施例中，第一预定功率水平在约5％至约20％之间，而第二预定功率水平介于零和约5％之间。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 7. 发明授权
      US5960049A Pump selection logic 失效
    • Pump selection logic
    • 泵选择逻辑
    • US5960049A
    • 1999-09-28
    • US025925
    • 1998-02-19
    • Stephen J. Wilkosz , Deva R. Chari , James E. Robertson
    • Stephen J. Wilkosz , Deva R. Chari , James E. Robertson
    • G21D1/04 , G21C15/00
    • G21D1/04 , G21Y2002/205 , G21Y2002/208 , G21Y2004/401 , G21Y2004/403 , Y02E30/40
    • The operator of a nuclear steam supply system manually selects a lineup of either one, two, or three main feedwater pumps for normal reactor operation to generate power. This selection sets or resets a status latch for each pump, representative of intended pump operation. A system (RPCS) for implementing a step reduction in the power output of the reactor, includes an associated logic circuit which combines signals indicative of tripping of one or more pumps, with the pump status latches, to achieve the following outcomes: (a) with one pump selected, a trip of this one pump does not produce an RPCS trip demand signal (because the reactor will be tripped); (b) with two pumps selected, (i) a trip of one pump will produce an RPCS trip demand signal, whereas (ii) a trip of these two pumps will not produce an RPCS trip demand signal; (c) with three pumps selected, (i) a trip of one pump will not produce an RPCS trip demand signal (because the transient can be handled by the basic control system), (ii) a trip of two pumps will produce an RPCS trip demand signal, and (iii) a trip of three pumps will not produce an RPCS trip demand signal.
    • 核蒸汽供应系统的操作者手动选择一个，两个或三个主要给水泵的阵容，用于正常的反应堆操作以产生电力。 该选择设置或复位每个泵的状态锁定，代表预期的泵操作。 用于实现反应堆功率输出的步骤降低的系统（RPCS）包括将指示一个或多个泵跳闸的信号与泵状态锁存器组合的相关逻辑电路，以实现以下结果：（a） 选择一个泵，该一个泵的跳闸不产生RPCS跳闸要求信号（因为反应器将被跳闸）; （b）选择两个泵，（i）一个泵的跳闸将产生RPCS跳闸要求信号，而（ii）这两个泵的跳闸将不产生RPCS跳闸要求信号; （c）选择三个泵，（i）一个泵的跳闸不会产生RPCS跳闸要求信号（因为瞬态可以由基本控制系统处理），（ii）两个泵的跳闸将产生RPCS 旅行需求信号，（iii）三个泵的跳闸不会产生RPCS跳闸要求信号。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 10. 发明授权
      US5939024A Microplate assembly 失效
    • Microplate assembly
    • 微孔板组装
    • US5939024A
    • 1999-08-17
    • US997182
    • 1997-12-23
    • James E. Robertson
    • James E. Robertson
    • B01L3/00 , C12M1/12 , C12M1/20
    • B01L3/50255
    • A microplate assembly for use in analyzing samples captured on a filter medium comprises a holding tray and a collimator having multiple sample wells. These elements are generally rectangular in shape and are sized to stack on top of one another. The filter medium is positioned within the holding tray and the holding tray is positioned within the collimator with the filter medium positioned beneath the collimator. To prepare samples in the microplate assembly for analysis, the samples are captured on the filter medium and the filter medium is placed in the holding tray. After adding scintillation cocktail or luminescent substrate to the filter medium, the collimator is placed over the holding tray with the filter medium positioned between the collimator and the holding tray and the samples disposed in the sample wells. The holding tray, the filter medium and the collimator are provided with complementary keyed corners to facilitate alignment of these elements relative to one another. The wells of the collimator include respective lower rims protruding into the filter medium to minimize crosstalk through the filter medium. The collimator and holding tray include structure for defining multiple positions of engagement with each other for accommodating filters of different thicknesses.
    • 用于分析在过滤介质上捕获的样品的微板组件包括具有多个样品阱的保持盘和准直器。 这些元件的形状通常为矩形，并且尺寸设计成彼此堆叠。 过滤介质定位在保持托盘内，并且保持托盘定位在准直器内，过滤介质位于准直器下方。 为了在微板组件中制备样品用于分析，将样品捕获在过滤介质上，并将过滤介质置于保持盘中。 将闪烁混合物或发光基质加入到过滤介质中后，将准直器置于保持盘上方，过滤介质位于准直器和保持托盘之间，样品置于样品孔中。 保持托盘，过滤介质和准直器设置有互补的键角，以便于这些元件相对于彼此对准。 准直器的阱包括突出到过滤介质中的相应下边缘，以最小化通过过滤介质的串扰。 准直器和保持托盘包括用于限定彼此接合的多个位置以容纳不同厚度的过滤器的结构。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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