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    • 2. 发明授权
    • Aircraft icing sensors
    • 飞机结冰传感器
    • US5772153A
    • 1998-06-30
    • US544131
    • 1995-10-17
    • John T. AbaunzaNicholas C. Donnangelo
    • John T. AbaunzaNicholas C. Donnangelo
    • B64D15/20
    • B64D15/20
    • An icing sensor utilizes a surface gap transmission line along which a radio frequency is transmitted. The phase delay of the radio frequency along the transmission line is dependent upon the dielectric constant presented at the surface in the gap between the transmission line electrodes. Accordingly, changes of dielectric constant affect phase delay of the transmitted frequency. This phase delay may be used to detect the difference between ice, water and snow as well as the presence of freezing point depressing fluids such as ethylene glycol. When the sensor is mounted on an aircraft control surface, the presence and likelihood of icing conditions may be predicted. Through the use of one or more temperature, freezing point depressing fluids/water mixture determined from dielectric constant, and rate of change of the dielectric constant, it is possible to predict the time delay until icing begins. Thus, the sensor of the present application may safely reduce the effort and expense in aircraft deicing.
    • 结冰传感器利用传播无线电频率的表面间隙传输线。 沿着传输线的射频的相位延迟取决于在传输线电极之间的间隙处的表面处呈现的介电常数。 因此,介电常数的变化影响发射频率的相位延迟。 这种相位延迟可用于检测冰,水和雪之间的差异以及冰点压降液体如乙二醇的存在。 当传感器安装在飞机控制表面上时,可以预测结冰条件的存在和可能性。 通过使用从介电常数和介电常数变化率确定的一种或多种温度,凝点降低液体/水混合物,可以预测直到结冰开始的时间延迟。 因此,本申请的传感器可以安全地减少飞机除冰中的努力和费用。
    • 4. 发明授权
    • Techniques for building-scale electrostatic tomography
    • 建筑规模静电层析成像技术
    • US07330032B2
    • 2008-02-12
    • US10993421
    • 2004-11-22
    • Nicholas C. Donnangelo
    • Nicholas C. Donnangelo
    • G01N27/60
    • G01N27/60A61B5/0536G01R29/14
    • Techniques for imaging a search region to detect a dielectric target include placing multiple electrodes outside the search region. At least two electrodes are activated independently of each other. Emitter circuits are connected to corresponding emitter electrodes. Each emitter circuit is configured for using its emitter electrode to produce an electric field with wavelength longer than about one hundred meters. Receiver circuits are connected to corresponding receiver electrodes. Each receiver circuit is configured for using its receiver electrode to measure a property of an electric field produced, at least in part, by an emitter electrode. A processor determines a property of a dielectric target inside the search region based on measurements from the receiver circuits using a subset of the emitter circuits. Among other uses, these techniques allow humans to be detected inside building-size regions, even when hidden by visually opaque blocking material of small dielectric constant.
    • 用于对搜索区域成像以检测电介质靶的技术包括将多个电极放置在搜索区域之外。 至少两个电极彼此独立地被激活。 发射极电路连接到相应的发射极。 每个发射极电路被配置为使用其发射电极产生波长长于约百米的电场。 接收器电路连接到相应的接收器电极。 每个接收器电路被配置为使用其接收器电极来至少部分地由发射极电极测量产生的电场的性质。 处理器基于使用发射极电路的子集的来自接收器电路的测量来确定搜索区域内的介电目标的属性。 除了其他用途之外,这些技术还允许在建筑尺寸区域内检测到人类,即使当通过具有小介电常数的视觉上不透明的阻挡材料隐藏时。
    • 7. 发明授权
    • Airborne surveillance method and system
    • 机载监控方法和系统
    • US4910526A
    • 1990-03-20
    • US50716
    • 1987-05-18
    • Nicholas C. DonnangeloJohn T. AbaunzaJohn G. Aiken
    • Nicholas C. DonnangeloJohn T. AbaunzaJohn G. Aiken
    • G01S3/48G01S13/78G01S13/91G01S13/93
    • G01S3/48G01S13/781G01S13/9303
    • An airborne surveillance method and system allows an observer aircraft to determine the position and change of position of a multiplicity of target aircraft and thus allows analysis of collision threats from these aircraft. The system uses a phase comparison direction finding antenna to determine direction of nearby ground based SSRs and all target aircraft of interest. The system further makes use of all other available data including Mode C transponder generated altitude information of the target aircraft, the altitude of the observer aircraft, the received signal strength of both the SSR beam and the received transponder signal, the time difference of arrival between the SSR interrogation signal and the response from the target aircraft, and a variety of other factors to determine the position of the target aircraft. The system compensates for the attitude of the observer aircraft and performs optimal Kalman filtering on the input data set to produce an estimate on target position based upon prior estimates and upon information contained in the data set while making estimates of the error magnitude of each measurement and compensating for these errors. The covariance matrix Q of the Kalman filter is adaptively vaired so as to optimize the estimate of the degree of correlation between various input values.
    • 机载监视方法和系统允许观察员飞机确定多个目标飞机的位置和位置的变化,从而允许分析来自这些飞机的碰撞威胁。 该系统使用相位比较方向发现天线来确定附近地面SSR和所有目标飞机的方向。 该系统进一步利用包括目标飞机在内的模式C转发器生成的高空信息,观察员飞机的高度,SSR波束和接收的应答器信号的接收信号强度等所有其他可用数据, SSR询问信号和来自目标飞机的响应,以及各种其他因素来确定目标飞机的位置。 该系统补偿观察员飞机的姿态,并对输入数据集执行最佳卡尔曼滤波,以根据先前的估计和包含在数据集中的信息同时估计每个测量的误差幅度来产生目标位置的估计,以及 补偿这些错误。 卡尔曼滤波器的协方差矩阵Q被自适应地维持,以优化各种输入值之间的相关程度的估计。
    • 8. 发明申请
    • Remotely Classifying Materials Based on Complex Permittivity Features
    • 基于复电阻特征的远程分类材料
    • US20160231264A1
    • 2016-08-11
    • US12395250
    • 2009-02-27
    • Nicholas C. DonnangeloAlex V. MamishevAdrian V. Mariano
    • Nicholas C. DonnangeloAlex V. MamishevAdrian V. Mariano
    • G01R27/00G01N33/22G06N5/02
    • G01N33/22
    • Provided are systems and methods for remotely classifying materials based on complex permittivity features. Such a system includes a first electrode, a second electrode, and a computing module. The first electrode is configured to generate an electric field. The second electrode is configured to sense interaction of the electric field with a container and any materials in the container and to provide a signal corresponding thereto. The computing module is configured to (i) convert the signal into one or more electrical parameters, (ii) classify the materials in the container based on the one or more electrical parameters, and (iii) identify at least one of the materials in the container to be contraband based on the classifications. The first and second electrodes may be configured as opposing parallel electrodes, a fringing-field sensor, or a combination thereof.
    • 提供了基于复介电常数特征远程分类材料的系统和方法。 这种系统包括第一电极,第二电极和计算模块。 第一电极被配置为产生电场。 第二电极被配置为感测电场与容器和容器中的任何材料的相互作用并且提供与其对应的信号。 所述计算模块被配置为(i)将所述信号转换成一个或多个电参数,(ii)基于所述一个或多个电参数对所述容器中的材料进行分类,以及(iii)识别所述容器中的至少一个材料 集装箱根据分类为违禁品。 第一和第二电极可以被配置为相对的平行电极,边缘场传感器或其组合。