Apparatus with movable receiver coil array for locating a buried metallic object
    1.
    发明授权
    Apparatus with movable receiver coil array for locating a buried metallic object 有权
    具有可移动接收器线圈阵列的装置,用于定位埋置的金属物体

    公开(公告)号:US06600320B2

    公开(公告)日:2003-07-29

    申请号:US09928632

    申请日:2001-08-13

    IPC分类号: G01V308

    CPC分类号: G01V3/15 G01V3/12

    摘要: A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain electromagnetic techniques on a scanning frame similar to a X-Y plotter. The system collects magnetic data over a large area above the buried object. The spatial information of the field detected on the ground is then processed with an unique ‘nearfield holographic’ data processing method to reconstruct the field image of the buried object.

    摘要翻译: 公开了一种使用低频电磁场的独特的时域电磁系统和数据处理技术,可以三维定位埋藏金属物体的位置。 测量系统在类似于X-Y绘图仪的扫描框架上使用时域电磁技术。 该系统在掩埋物体上方的大面积上收集磁性数据。 然后用独特的“近场全息”数据处理方法处理在地面上检测到的场的空间信息,以重建被埋物体的场图像。

    Imaging objects in a dissipative medium by nearfield electromagnetic
holography
    2.
    发明授权
    Imaging objects in a dissipative medium by nearfield electromagnetic holography 失效
    通过近场电磁全息术在耗散介质中成像物体

    公开(公告)号:US6084412A

    公开(公告)日:2000-07-04

    申请号:US824644

    申请日:1997-03-24

    CPC分类号: G01V3/15 G01V3/12

    摘要: A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain electromagnetic techniques on a scanning frame similar to a X-Y plotter. The system collects magnetic data over a large area above the buried object. The spatial information of the field detected on the ground is then processed with an unique `nearfield holographic` data processing method to reconstruct the field image of the buried object.

    摘要翻译: 公开了一种使用低频电磁场的独特的时域电磁系统和数据处理技术,可以三维定位埋藏金属物体的位置。 测量系统在类似于X-Y绘图仪的扫描框架上使用时域电磁技术。 该系统在掩埋物体上方的大面积上收集磁性数据。 然后用独特的“近场全息”数据处理方法处理在地面上检测到的场的空间信息,以重建掩埋物体的场图像。

    System and method of radar detection of non-linear interfaces
    3.
    发明授权
    System and method of radar detection of non-linear interfaces 失效
    雷达检测非线性接口的系统和方法

    公开(公告)号:US06765527B2

    公开(公告)日:2004-07-20

    申请号:US10048769

    申请日:2002-01-31

    IPC分类号: G01S1304

    摘要: A harmonic radar nonlinear junction detector system for detecting concealed weapons, electronics, and other man-made objects utilizing state-of-the art wireless technology, circuit fabrication, signal synthesis, and computer processing techniques to detect and characterize man-made objects possessing nonlinear junctions. The system transmits a pair of low power waveforms and a receiver within the system is coherently tuned to harmonics of the transmitted frequencies of the waveforms to detect man-made metal objects and electronics that contain non-linear junctions. The receiver is also capable of receiving inter-modulation products reflected from the man-made objects that are a result of using two incident signals. The system uses two signal sources generating user-definable waveforms of variable frequencies in order to provide enhanced discrimination and target identification abilities via the processing of returned inter-modulation products.

    摘要翻译: 一种谐波雷达非线性结检测器系统,用于利用最先进的无线技术,电路制造,信号合成和计算机处理技术来检测隐藏的武器,电子和其他人造物体,以检测和表征具有非线性的人造物体 路口 系统传输一对低功率波形,并且系统内的接收器被相干地调谐到波形的发射频率的谐波,以检测包含非线性结的人造金属物体和电子器件。 接收机还能够接收由人造物体反射的作为使用两个入射信号的结果的互调产物。 该系统使用两个信号源产生可变频率的用户可定义波形,以便通过返回的互调产物的处理来提供增强的识别和目标识别能力。

    Apparatus for sensing human prostate tumor
    4.
    发明授权
    Apparatus for sensing human prostate tumor 有权
    用于感测人类前列腺肿瘤的装置

    公开(公告)号:US07283868B2

    公开(公告)日:2007-10-16

    申请号:US10204719

    申请日:2001-04-05

    IPC分类号: A61B5/05

    摘要: An electromagnetic bioimpedance measurement apparatus uses an alternating magnetic field to induce electrical eddy currents in biological tissue. The eddy currents produce secondary magnetic fields that have the effect of changing the mutual inductance between the tissue and the coil that applied to the initial magnetic field. The amplitude of the resultant voltage, as measured by the same coil or a different receiver coil, is proportional to the conductivity of the tissue. A simple, marginally stable oscillator circuit is used to generate the current into the coil. Nearfield holographic signal processing is then used for holographic image formation. Bioimpedance is used to distinguish between normal tissue and cancerous tissue, especially cancerous prostate tissue. An invasive embodiment includes driven needle electrodes that are inserted into the body segment to be tested. Noninvasive embodiments include single or multiple coils arranged on a probe shaft.

    摘要翻译: 电磁生物阻抗测量装置使用交变磁场来诱导生物组织中的电涡流。 涡流产生二次磁场,其具有改变应用于初始磁场的组织和线圈之间的互感的作用。 由相同线圈或不同的接收器线圈测量的合成电压的幅度与组织的电导率成比例。 使用简单的,稍微稳定的振荡器电路来产生线圈中的电流。 然后将近场全息信号处理用于全息图像形成。 生物阻抗用于区分正常组织和癌组织,特别是癌前列腺组织。 侵入性实施例包括被插入被检体内段的驱动针电极。 非侵入性实施例包括布置在探针轴上的单个或多个线圈。

    In vivo, noninvasive, bioelectromagnetic glucose sensor system and method

    公开(公告)号:US11298055B2

    公开(公告)日:2022-04-12

    申请号:US17305787

    申请日:2021-07-14

    申请人: Harvey W. Ko

    发明人: Harvey W. Ko

    IPC分类号: A61B5/145 A61B5/01 A61B5/00

    摘要: A noninvasive glucose monitoring device includes a drive-and-sense coil and an electronic oscillator with multiple circuits electrically connected to the coil. The drive-and-sense coil may be embedded in either a finger clip or a finger push button. The device measures bioimpedance with a magnetic field coil outside a user's finger. The coil measures blood and glucose electrical conductivity without penetrating the finger. No blood extraction is required. A noninvasive method of measuring glucose in-vivo includes placing the drive-and-sense coil next to a subject's finger and inducing magnetic fields in blood in the subject's finger. A change in mutual impedance between the drive-and-sense coil and the blood is measured at predetermined frequencies and glucose content is calculated from the change in mutual impedance according to a predetermined correlation for each frequency.

    Magnetoencephalography system and method for 3D localization and tracking of electrical activity in brain
    6.
    发明授权
    Magnetoencephalography system and method for 3D localization and tracking of electrical activity in brain 有权
    脑电图三维定位和跟踪电脑脑电图系统及方法

    公开(公告)号:US09370309B2

    公开(公告)日:2016-06-21

    申请号:US13885746

    申请日:2011-11-18

    IPC分类号: A61B5/04 A61B5/00

    摘要: A magnetoencephalogram (MEG) system is provided for use with a head. The MEG system includes a shell, and three three-axis gradiometers and a computing portion. Each three-axis gradiometer detects a magnetic field vector from a magnetic dipole in the head and generates a respective detected signal based on the respective magnetic field vector. Each three-axis gradiometer is disposed at a respective position of the shell. The computing portion determines a location of the magnetic dipole based on the first detected signal, the second detected signal and the third detected signal.

    摘要翻译: 提供脑磁图(MEG)系统用于头部。 MEG系统包括壳体和三个三轴梯度计和计算部分。 每个三轴梯度计检测来自头部中的磁偶极子的磁场矢量,并且基于相应的磁场矢量产生相应的检测信号。 每个三轴梯度计设置在壳体的相应位置。 计算部分基于第一检测信号,第二检测信号和第三检测信号来确定磁偶极子的位置。

    Magnetoencephalography System and Method for 3D Localization and Tracking of Electrical Activity in Brain
    7.
    发明申请
    Magnetoencephalography System and Method for 3D Localization and Tracking of Electrical Activity in Brain 有权
    脑电图的3D定位和跟踪的脑电图系统和方法

    公开(公告)号:US20140005518A1

    公开(公告)日:2014-01-02

    申请号:US13885746

    申请日:2011-11-18

    IPC分类号: A61B5/04

    摘要: A magnetoencephalogram (MEG) system is provided for use with a head. The MEG system includes a shell, and three three-axis gradiometers and a computing portion. Each three-axis gradiometer detects a magnetic field vector from a magnetic dipole in the head and generates a respective detected signal based on the respective magnetic field vector. Each three-axis gradiometer is disposed at a respective position of the shell. The computing portion determines a location of the magnetic dipole based on the first detected signal, the second detected signal and the third detected signal.

    摘要翻译: 提供脑磁图(MEG)系统用于头部。 MEG系统包括壳体和三个三轴梯度计和计算部分。 每个三轴梯度计检测来自头部中的磁偶极子的磁场矢量,并且基于相应的磁场矢量产生相应的检测信号。 每个三轴梯度计设置在壳体的相应位置。 计算部分基于第一检测信号,第二检测信号和第三检测信号来确定磁偶极子的位置。

    Neutron detection based on boron activated liquid scintillation
    8.
    发明授权
    Neutron detection based on boron activated liquid scintillation 有权
    基于硼激活液体闪烁的中子检测

    公开(公告)号:US07126148B2

    公开(公告)日:2006-10-24

    申请号:US10621595

    申请日:2003-07-17

    IPC分类号: G01V5/10

    CPC分类号: G01T3/06 Y10S250/90

    摘要: A system for detecting neutron radiation. A liquid cocktail mixture comprised of a neutron absorber and a scintillator is housed in a Teflon® tube having a mirror at one end of the tube and a windowed portal at the other end of the tube. Neutrons that penetrate the tube react with the neutron absorber producing ionization that excites a scintillator to produce photons. A photo-multiplier tube is coupled with the windowed portal for receiving photons and converting the photons to electrical signals. A processing device is coupled to the photo-multiplier output for receiving and analyzing the electrical signals so as to provide a measurement pertaining to the presence and relative strength of neutron radiation. The tube can be adapted to function as a portable survey instrument. Alternatively, the tube can be stretched to cover large apertured areas. In such implementations a wavelength shifter is employed to convert light emitted to another wavelength giving a multiplier effect necessary for long light guides.

    摘要翻译: 一种用于检测中子辐射的系统。 由中子吸收剂和闪烁体组成的液体混合物混合物容纳在管的一端具有反射镜的Teflon管和管的另一端的窗口入口。 渗透管的中子与中子吸收剂反应产生电离,激发闪烁体产生光子。 光电倍增管与窗口门户耦合以接收光子并将光子转换成电信号。 处理装置耦合到光电倍增器输出端,用于接收和分析电信号,以提供与中子辐射的存在和相对强度有关的测量。 该管可适用于便携式测量仪器。 或者,管可以被拉伸以覆盖大的有孔区域。 在这种实现中,使用波长移位器将发射的光转换成另一波长,给出长光导所需的乘法器效应。