公开(公告)号：US5246000A

公开(公告)日：1993-09-21

申请号：US874320

申请日：1992-04-27

申请人： Vincent J. Ellis ,  Charles L. Brown

发明人： Vincent J. Ellis ,  Charles L. Brown

IPC分类号： A61N1/37 ,  G09B23/28

CPC分类号： G09B23/28 ,  A61N1/37 ,  A61N1/3718

摘要： A phantom test cell and method for testing the response of a cardiac pacemaker to electromagnetic fields. The phantom comprises a substantially rigid shell which has a torso-like section and two leg-like appendages. The entire shell is filled with a tissue-equivalent material, which in one embodiment represents an upper bound approximation of human whole body averages. The phantom's torso is equipped with a plurality of access ports to which a current probe containment vessel may attach when immersed in the tissue-equivalent material. The containment vessel houses a current probe and flooded tube through which an implanted pacemaker's leads may pass, allowing induced currents to be monitored. In operation, lead current measurements are taken within the phantom and are normalized using measurements taken without the presence of a phantom. A transfer function is computed by taking the ratio of the induced current measured and a reference E-field and/or H-field measurement. A source of interest is then convolved with the transfer function to determine what the induced current would be in an implanted pacemaker. In one embodiment, the induced current which is arrived at analytically is then physically injected into a cardiac pacemaker outside the test phantom to reproduce EMI effects.

摘要翻译： 用于测试心脏起搏器对电磁场的响应的幻影测试单元和方法。 该体模包括具有躯干状部分和两个腿状附件的基本刚性的壳体。 整个外壳填充有组织等效材料，其在一个实施例中表示人体全身平均值的上限近似值。 幻影的躯干配备有多个进入端口，当浸入到组织等效材料中时，电流探针容纳容器可附接到该入口。 安全壳容纳一个电流探针和淹水管，植入式起搏器的引线通过该探针和淹水管，可以监测感应电流。 在运行中，引线电流测量在幻影中进行，并使用不存在幻影的测量进行归一化。 通过获取测得的感应电流与参考E场和/或H场测量的比值来计算传递函数。 然后将感兴趣的来源与传递函数进行卷积，以确定在植入式心脏起搏器中感应电流将是什么。 在一个实施例中，然后将分析到达的感应电流物理地注入到测试体模之外的心脏起搏器中以再现EMI效应。

公开(公告)号：US5401978A

公开(公告)日：1995-03-28

申请号：US81892

申请日：1993-06-24

申请人： David J. DeTroye ,  Thomas J. Bock ,  Vincent J. Ellis

发明人： David J. DeTroye ,  Thomas J. Bock ,  Vincent J. Ellis

IPC分类号： G01D5/34 ,  G01S17/46 ,  G01S17/88

CPC分类号： G01S17/46 ,  G01D5/34 ,  G01S17/88

摘要： A system uses laser optic technology for non-obtrusive monitoring of movements a missile control surface undergoing electromagnetic testing. The system includes a laser source, a detector positioned opposite the laser source, an attenuator assembly positioned between the laser source and the detector, and a recorder for recording data processed by the detector. The attenuator assembly consists of a framed translucent gray scale shaded window mounted on a block member, which in turn is mounted to the missile control surface. The control surface is a pivotally mounted canard member on the missile body. Generated laser beams project onto the gray scale shaded window. The gray scale shading affects the intensity of the directed laser beams (darker areas attenuate more light and lighter areas allow more light to pass through). Accordingly, data is obtained from tracking the different shades of the light intensities which are directly related in synchronization with the movements of the canard member of the monitor assembly. The resulting intensity data is detected and measured by the detector and then processed by the recorder. Thus, as the control surface moves, the recorded data provides a basis for determining recognition characteristics with respect to the missile control surface, such as (1) the direction of the movement, (2) the distance of the movement, and (3) the speed of the movement.

摘要翻译： 一个系统使用激光光学技术对导弹控制表面进行电磁测试的运动进行非显着监测。 该系统包括激光源，与激光源相对设置的检测器，位于激光源和检测器之间的衰减器组件，以及用于记录由检测器处理的数据的记录器。 衰减器组件由安装在块构件上的框架半透明灰度阴影窗口组成，其又安装在导弹控制表面上。 控制面是在导弹体上枢转安装的鸭子部件。 生成的激光束投射到灰度阴影窗口上。 灰度阴影影响定向激光束的强度（较暗的区域衰减更多的光线，较浅的区域允许更多的光线通过）。 因此，通过跟踪与监视器组件的卡口部件的移动同步直接相关的光强度的不同色调，获得数据。 所得到的强度数据由检测器检测和测量，然后由记录器处理。 因此，当控制面移动时，所记录的数据提供了确定相对于导弹控制表面的识别特性的基础，例如（1）移动方向，（2）移动距离，以及（3） 运动的速度。

公开(公告)号：US5490090A

公开(公告)日：1996-02-06

申请号：US260293

申请日：1994-06-14

申请人： Vincent J. Ellis

发明人： Vincent J. Ellis

IPC分类号： G01R31/00 ,  G01R31/303 ,  G01R31/304

CPC分类号： G01R31/001

摘要： A method has been developed and used to non-intrusively interrogate electronic systems in order to determine the system's characteristic response to electromagnetic energy. The method involves subjecting the system under test to two continuous wave signal sources of different frequencies fl and fh and measuring the difference frequency .DELTA.f (fh-fl) emitted from the system under test. The difference frequency, created by mixing action of nonlinear electronic components within the system, is a relative indication of the system's response to fh, fl. By incrementing the two source signals fl and fh by the same frequency step size, .DELTA.f remains constant and is measured for each fh,fl value. The compilation of amplitude measures of .DELTA.f, normalized by the corresponding amplitude measures of fh, fl, provides a relative measure of the frequency domain transfer function of the system under test. The present method is performed with the test equipment in total isolation from the system under test and may be used to quickly and cost effectively identify those frequencies to which the system under test may be susceptible.

摘要翻译： 已经开发了一种用于非侵入式询问电子系统的方法，以便确定系统对电磁能的特征响应。 该方法包括对被测系统进行两个不同频率的连续波信号源f1和fh，并测量从被测系统发射的差频DELTA f（fh-fl）。 通过系统内非线性电子元件的混合动作产生的差频是系统对fh，fl的响应的相对指示。 通过以相同的频率步长增加两个源信号f1和fh，DELTA f保持恒定，并且对于每个fh，f1值进行测量。 通过fh，fl的相应振幅测量法对DELTA f的振幅测量进行编译，提供了被测系统的频域传递函数的相对测量。 本测试设备与被测系统完全隔离，可用于快速且经济有效地识别被测系统可能易受影响的频率。