System and method for enhanced electrical impedance tomography

    公开(公告)号:US10357178B2

    公开(公告)日:2019-07-23

    申请号:US14970589

    申请日:2015-12-16

    Abstract: A method includes applying a plurality of currents to a plurality of electrodes disposed on a surface surrounding an anatomical region in a subject. Further, the method includes measuring a plurality of voltages generated in response to the plurality of currents. The method also includes selecting a coarse-scale basis corresponding to a response function associated with the plurality of electrodes. Moreover, the method includes determining simultaneously an internal admittivity corresponding to the anatomical region and a contact impedance corresponding to the plurality of electrodes based on the plurality of voltages and the coarse-scale basis. The method also includes reconstructing the diagnostic image based on the internal admittivity.

    ROUTE EXAMINING SYSTEM AND METHOD
    3.
    发明申请
    ROUTE EXAMINING SYSTEM AND METHOD 有权
    路由检查系统和方法

    公开(公告)号:US20150367872A1

    公开(公告)日:2015-12-24

    申请号:US14841209

    申请日:2015-08-31

    CPC classification number: B61L23/044 B61L3/18

    Abstract: Systems and methods for examining a route inject one or more electrical examination signals into a conductive route from onboard a vehicle system traveling along the route, detect one or more electrical characteristics of the route based on the one or more electrical examination signals, apply a filter to the one or more electrical characteristics, and detect a break in conductivity of the route responsive to the one or more electrical characteristics decreasing by more than a designated drop threshold for a time period within a designated drop time period. Feature vectors may be determined for the electrical characteristics and compared to one or more patterns in order to distinguish between breaks in the conductivity of the route and other causes for changes in the electrical characteristics.

    Abstract translation: 用于检查路线的系统和方法将一个或多个电检查信号从沿着路线行进的车辆系统上的导电路线注入,基于一个或多个电检查信号检测路线的一个或多个电特性,应用滤波器 响应所述一个或多个电气特性,在指定的下降时间段内的一段时间内减小超过指定的下降阈值,检测所述路线的电导率中断。 可以针对电特性确定特征向量,并与一个或多个图案进行比较,以区分路线的导电性的断裂和电特性变化的其它原因。

    Systems and methods for electrical impedance imaging

    公开(公告)号:US10357177B2

    公开(公告)日:2019-07-23

    申请号:US14105203

    申请日:2013-12-13

    Abstract: A method and system for performing electrical impedance imaging of a subject of interest using a plurality of electrodes is provided. The method includes applying one or more determined current patterns to one or more electrodes of the plurality of electrodes. Further, the method includes determining a resultant voltage at at least one electrode of the one or more electrodes in response to the one or more determined current patterns. Moreover, the method includes estimating a change in a contact impedance for the at least one electrode of the one or more electrodes. Additionally, the method includes calculating a compensated voltage for the at least one electrode based on an estimated change in a corresponding contact impedance of the at least one electrode.

    SYSTEMS AND METHOD FOR DOWN-HOLE PHASE MONITORING

    公开(公告)号:US20180340879A1

    公开(公告)日:2018-11-29

    申请号:US15607181

    申请日:2017-05-26

    Abstract: A measurement tool configured to be run through a bore of a hydrocarbon well. The measurement tool includes a dielectric core, a controller disposed at a first end of the dielectric core, a first wire helically disposed about the dielectric core and extending from the controller to a first location a first distance from the controller, and a second wire helically disposed about the dielectric core and extending from the controller to a second location a second distance from the controller. The controller provides first and second input signals to the first and second wires, and receives first and second reflected signals from the first and second wires.

    ROUTE EXAMINING SYSTEM
    10.
    发明申请
    ROUTE EXAMINING SYSTEM 有权
    路由考试系统

    公开(公告)号:US20160194012A1

    公开(公告)日:2016-07-07

    申请号:US15047083

    申请日:2016-02-18

    CPC classification number: B61L23/044 B61L3/10

    Abstract: Systems for examining a route inject one or more electrical examination signals into a conductive route from onboard a vehicle system traveling along the route, detect one or more electrical characteristics of the route based on the one or more electrical examination signals, and detect a break in conductivity of the route responsive to the one or more electrical characteristics decreasing by more than a designated drop threshold for a time period within a designated drop time period. Feature vectors may be determined for the electrical characteristics and compared to one or more patterns in order to distinguish between breaks in the conductivity of the route and other causes for changes in the electrical characteristics.

    Abstract translation: 用于检查路线的系统将一个或多个电检查信号从沿着路线行进的车辆系统上的导电路线注入,基于所述一个或多个电检查信号检测路线的一个或多个电特性,并且检测中断 响应于所述一个或多个电气特性的路线的电导率在指定的下降时间段内减少大于指定的下降阈值一段时间。 可以针对电特性确定特征向量,并与一个或多个图案进行比较,以区分路线的导电性的断裂和电特性变化的其它原因。

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