Weighted noise compensating method and camera used in millimeter wave imaging

    公开(公告)号:US20060006322A1

    公开(公告)日:2006-01-12

    申请号:US11007047

    申请日:2004-12-08

    申请人: Nitin Vaidya

    发明人: Nitin Vaidya

    IPC分类号: G12B13/00

    CPC分类号: H04N5/217 G01S13/887 H04N5/30

    摘要: Unpredictable response variations of the output value signals from radiometer or receiver channels due to noise are minimized when composing a millimeter wave image. The image is composed from composition signals which are each related to the corresponding output value signals from the channels. Some composition signals are weighted by a weighting factor which is different from a weighting factor used for weighting other composition signals. Preferably, the reciprocal of the standard deviation of variations of the output value signals from each channel is used as the weighting factor for deriving the composition signals from the output value signals from that channel. The intensity of each pixel of the image is composed by adding the weighted composition signals associated with that pixel.

    Method for stabilizing the temperature dependency of light emission of an LED
    62.
    发明申请
    Method for stabilizing the temperature dependency of light emission of an LED 有权
    稳定LED发光温度依赖性的方法

    公开(公告)号:US20050263680A1

    公开(公告)日:2005-12-01

    申请号:US11128119

    申请日:2005-05-10

    IPC分类号: G12B13/00 H01J7/24 H05B33/08

    摘要: Method for correction of the temperature dependency of a light quantity L emitted by a light emitting diode (LED), being operated in pulsed mode with substantially constant pulse duration tP, and measured in a light detector, using a predetermined parameter X, correlated to the temperature T of the LED in a predetermined ratio, whereby a correction factor K is determined from the parameter X, preferably using a calibration table, especially preferred using an analytic predetermined function, whereby the measured emitted light quantity L is corrected for the temperature contingent fluctuations of the emitted light quantity, whereby the parameter X is determined from at least two output signals of the LED, which are related to each other in a predetermined manner.

    摘要翻译: 用于校正由发光二极管(LED)发射的光量L的温度依赖性的方法,其以脉冲模式以基本上恒定的脉冲持续时间t P P运行,并且在光检测器中测量,使用 预定参数X,以预定比例与LED的温度T相关,由此,优选使用校准表,从参数X确定校正因子K,特别优选使用分析预定功能,由此测量的发射光量 根据发射光量的温度偶然波动来校正L,由此根据预定方式彼此相关的LED的至少两个输出信号来确定参数X.

    METHOD AND DEVICE FOR DIAGNOSING GAS SENSOR DEGRADATION
    63.
    发明申请
    METHOD AND DEVICE FOR DIAGNOSING GAS SENSOR DEGRADATION 有权
    用于诊断气体传感器降解的方法和装置

    公开(公告)号:US20050155405A1

    公开(公告)日:2005-07-21

    申请号:US10514254

    申请日:2003-05-12

    摘要: A degradation diagnosis method for simply performing degradation diagnosis of a gas sensor such as a hydrogen sensor. The hydrogen sensor has a reference detector member and common detector member, with each detector member respectively constituted of a detector element and temperature compensating element that form a pair. Power is normally supplied to the common detector member, which performs concentration detection of the hydrogen gas. When performing degradation diagnosis of this common detector member, concentration detection is performed simultaneously by each detector member for the gas of the prescribed hydrogen concentration by supplying power to both the common detector member and reference detector member and comparing the output value of the common detector member and the output value of the reference detector member.

    摘要翻译: 用于简单地进行诸如氢传感器的气体传感器的劣化诊断的劣化诊断方法。 氢传感器具有参考检测器构件和公共检测器构件,每个检测器构件分别由形成一对的检测器元件和温度补偿元件构成。 通常将功率供给到检测氢气的公共检测部件。 当对该常用检测器构件执行劣化诊断时,通过向公共检测器构件和参考检测器构件两者供电并将公共检测器构件的输出值进行比较,同时通过每个检测器构件对规定氢浓度的气体进行浓度检测 和参考检测器构件的输出值。

    Device for ejecting a metered quantity of vaporized fluid
    65.
    发明授权
    Device for ejecting a metered quantity of vaporized fluid 有权
    用于喷射计量的蒸发流体的装置

    公开(公告)号:US6044688A

    公开(公告)日:2000-04-04

    申请号:US282767

    申请日:1999-03-31

    IPC分类号: G01M3/00 G12B13/00

    CPC分类号: G01M3/007

    摘要: A device for delivering a metered quantity of vaporized liquid material to the surrounding atmosphere is disclosed. The device includes a reservoir for storing the liquid material, and a conduit in flow communication with the reservoir, with a portion of the conduit defining a dosing chamber for storing the metered quantity of the liquid material. The conduit further includes an impeding portion for restricting the flow of the liquid material from the dosing chamber toward the reservoir. An outlet nozzle is provided and is in flow communication with the dosing chamber. A thermal activator is disposed adjacent the dosing chamber for vaporizing the liquid material in the dosing chamber thereby ejecting the vaporized material through the outlet nozzle to the atmosphere.

    摘要翻译: 公开了一种用于将计量的蒸发液体材料输送到周围大气的装置。 该装置包括用于储存液体材料的储存器和与储存器流体连通的导管,该导管的一部分限定用于存储计量量的液体材料的计量室。 导管还包括阻止部分,用于限制液体材料从定量室朝向储存器的流动。 出口喷嘴设置并与计量室流动连通。 热活化剂设置在剂量室附近,用于蒸发计量室中的液体材料,从而通过出口喷嘴将气化材料喷射到大气中。

    Light emitting diode reference locket
    66.
    发明授权
    Light emitting diode reference locket 失效
    发光二极管参考小盒

    公开(公告)号:US5567936A

    公开(公告)日:1996-10-22

    申请号:US494612

    申请日:1995-06-23

    申请人: Michael J. Basso

    发明人: Michael J. Basso

    CPC分类号: G01T1/40 G01T1/026 G01T3/08

    摘要: A reference locket for use in calibrating a radiac computer indicator or trument having a light emitting diode or LED. The present invention is an inexpensive stable device having a base, a retainer placed in the base holding a light emitting diode or LED, and a cover forming a reference locket. The reference locket is placed in a radiac computer indicator or instrument for calibration. A forward constant current pulse provided to the LED results in electromagnetic radiation or light that simulates a gamma dose. The characteristic junction resistance of the LED simulates a neutron reading. The present invention replaces a conventional reference locket having a silver activated phosphate glass and a neutron diode. The phosphate glass blocks have exhibited unexplained increases in the previously calibrated gamma doses. Therefore, calibration or reference lockets using phosphate glass may be unstable. The present invention provides a stable, inexpensive reference locket used for calibration of a radiac computer indicator or instrument without modification to the existing instrument.

    摘要翻译: 用于校准具有发光二极管或LED的无线电计算机指示器或仪器的参考小盒。 本发明是一种廉价的稳定装置,其具有基座,保持器位于保持发光二极管或LED的基座中,以及形成参考小盒的盖。 参考小盒被放置在用于校准的无线电计算机指示器或仪器中。 提供给LED的正向恒定电流脉冲导致模拟伽马剂量的电磁辐射或光。 LED的特征结电阻模拟中子读数。 本发明替代了具有银活化磷酸盐玻璃和中子二极管的常规参考小盒。 磷酸盐玻璃块已经显示了先前校准的γ剂量的不明原因的增加。 因此,使用磷酸盐玻璃的校准或参考小盒可能不稳定。 本发明提供了一种用于校准无线计算机指示器或仪器的稳定,便宜的参考小盒,而不改变现有仪器。

    Method of calibrating an analytical instrument
    67.
    发明授权
    Method of calibrating an analytical instrument 失效
    校准分析仪器的方法

    公开(公告)号:US5552997A

    公开(公告)日:1996-09-03

    申请号:US275099

    申请日:1994-07-14

    摘要: A method of calibrating an analytical instrument, for example an atomic absorption spectrophotometer, comprises measuring the absorbance of a plurality of standards of known concentration (100) and plotting the measured absorbance against concentration (101). A straight line is fitted to the plotted points (102) and a quality co-efficient calculated (103). If the quality co-efficient is acceptable (104) the calibration line is used for measurement of samples (105). If not, then the slope of the line joining each point to the origin is determined and if the slopes are random (107) then a robust regression technique is used to fit the calibration line (108). If outliers are then detected (109) it is determined which points are outliers (110) and appropriate action taken, for example to restrict the range if the last point(s) is/are outliers (111). If the slopes determined in step (106) are not random, then, provided more than 4 points remain (113), the slope of each point with respect to the first point is determined (114). If they are again not random (115), then a curved calibration line is diagnosed, while if they are random, a straight line not passing through the origin is diagnosed (117). In atomic absorption spectroscopy, a straight line not passing through the origin indicates a problem with the blank solution, for example, a problem of contamination.

    摘要翻译: 校准分析仪器(例如原子吸收分光光度计)的方法包括测量已知浓度(100)的多种标准品的吸光度,并绘制所测量的吸光度与浓度(101)的关系。 将直线拟合到绘制的点(102)和计算出的质量系数(103)。 如果质量合格是可接受的(104),则校准线用于测量样品(105)。 如果不是,则确定将每个点连接到原点的线的斜率,并且如果斜率是随机的(107),则使用鲁棒的回归技术来拟合校准线(108)。 如果然后检测到异常值(109),则确定哪些点是异常值(110),并采取适当的动作,例如如果最后一个点是异常值(111)则限制该范围。 如果在步骤(106)中确定的斜率不是随机的,那么如果剩余多于4个点(113),则确定每个点相对于第一点的斜率(114)。 如果它们再次不是随机的(115),则诊断出弯曲的校准线,而如果它们是随机的,则诊断出不通过原点的直线(117)。 在原子吸收光谱中,不通过原点的直线表示空白溶液的问题,例如污染问题。

    Automated method and apparatus for calibration of laser scanning in a
selective laser sintering apparatus
    68.
    发明授权
    Automated method and apparatus for calibration of laser scanning in a selective laser sintering apparatus 失效
    用于在选择性激光烧结装置中校准激光扫描的自动化方法和装置

    公开(公告)号:US5430666A

    公开(公告)日:1995-07-04

    申请号:US992559

    申请日:1992-12-18

    摘要: A method and apparatus for calibrating the scan of a laser over a planar surface that includes defining an error table having x-dimension and y-dimension correction factors, and also a scale factor, for each of a plurality of regions of the planar target surface. The scale factor is initially set to a value to account for differences in the size of the image field to be scanned and the overall scan field in the CAD data base. Adjustment is performed to each scale factor to account for theoretical differences due to the use of a perpendicular galvanometer-driven mirror scanning system. A sheet with a large number of square cells is then placed over the target surface, after rotational alignment, and the laser marks each cell. The sheet is then converted into digital form by scanning, and the location of the laser mark relative to the centroid of the cell is used to update the correction factors for that cell.

    摘要翻译: 一种用于校准激光在平面上的扫描的方法和装置,包括:对于平面目标表面的多个区域中的每个区域定义具有x维度和y维度校正因子的误差表以及比例因子 。 比例因子最初设置为一个值,以考虑要扫描的图像字段的大小和CAD数据库中的整体扫描字段的差异。 对于每个比例因子进行调整,以解决由于使用垂直检流计驱动的镜像扫描系统而产生的理论差异。 然后在旋转对准之后将具有大量方形电池的片放置在目标表面上,并且激光对每个电池进行标记。 然后通过扫描将薄片转换成数字形式,并且使用相对于单元的质心的激光标记的位置来更新该单元的校正因子。

    Mixed gamma emitting gas standard and method
    69.
    发明授权
    Mixed gamma emitting gas standard and method 失效
    混合伽马发射气体标准和方法

    公开(公告)号:US4456823A

    公开(公告)日:1984-06-26

    申请号:US322442

    申请日:1981-11-18

    IPC分类号: G01D18/00 G12B13/00

    CPC分类号: G01D18/00

    摘要: A mixed gamma emitting gas standard in the form of a multiple isotope standard in a glass sphere which can be used to calibrate a gamma spectrometer system for gas counting in a wide energy range and without the need for any additional standards. Total and partial transfers of gas standard material to counting containers without leakage is enabled. The mixed gas standard is contained in a spherical vial equipped with ground glass stopcocks and a septum port in one tubular arm separated from the spherical vial by one stopcock. A gas transfer syringe, venting needle, assorted septa, and a length of hose are included with the spherical vial assembly to enable accurate volumetric transfers to several different gas counting geometries.

    摘要翻译: 玻璃球中多重同位素标准形式的混合伽马发射气体标准,可用于校准伽马光谱仪系统,用于在广泛能量范围内进行气体计数,无需任何其他标准。 将气体标准物质全部和部分转移给无泄漏的计数容器。 混合气体标准品包含在装有磨玻璃旋塞阀的球形小瓶和一个管状臂中的隔膜口中,该管状臂通过一个旋塞与球形小瓶分离。 球形小瓶组件包括气体输送注射器,通气针,各种隔片和一段长度的软管,以实现精确的体积转移到几种不同的气体计数几何形状。

    TECHNICAL STAGE DEVICE AND METHOD FOR DETERMINING A CORRELATION FUNCTION

    公开(公告)号:US20220091217A1

    公开(公告)日:2022-03-24

    申请号:US17424914

    申请日:2020-01-09

    申请人: zactrack GmbH

    发明人: Werner PETRICEK

    摘要: The invention relates to a technical stage device (1), comprising a fastening element (2), a bearing element (3) and a functional element (4), in particular a camera or a spotlight, wherein the functional element (4) is arranged on the bearing element (3) so as to be pivotable about a tilt axis (14) and wherein the bearing element (3) is arranged on the fastening element (2) so as to be rotatable about a pan axis (13), wherein a position determination arrangement is provided, which is designed in such a way that a relative movement between the bearing element (3) and the fastening element (2) as well as between the bearing element (3) and the functional element (4) can be determined. Further, the invention relates to a method for determining the correlation function of predetermined tilt and pan values of a functional value (4), in particular a camera or a spotlight, to absolute motion values of the functional element (4).