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    • 13. 发明授权
    • Multifunctional sensor system
    • 多功能传感器系统
    • US5606170A
    • 1997-02-25
    • US383362
    • 1995-02-03
    • Elric W. SaaskiDavid A. McCrae
    • Elric W. SaaskiDavid A. McCrae
    • G01N21/64G01N21/77G01N21/01G01N21/25G01N21/62
    • G01N21/648G01N21/6428G01N21/7703G01N2021/6432G01N2201/0642
    • A multifunctional sensor system for an intrinsic type optical sensing fiber. A numerical aperture controlling optical input element for the excitation fiber may maximize the amount of sensing fiber modulated return light. The excitation fiber may be centered in a ring or linear array of return fibers, to inject excitation light into the return light poor center of the sensing fiber; and to capture return light from the return light rich outer parts of the sensing fiber. Tipping the return fibers with respect to the sensing fiber may increase their capture of high numerical aperture return light. The sizes and number of the adjacent ends of the excitation, return and sensing fibers may be selected to minimize the effects of any lateral displacement between the adjacent ends. The sensing fiber may generate both reference and sensor return light; and a ratiometric output signal may be derived from the reference and sensor return light which may be free of certain system errors. Ribbon-like sensor and sensing fibers may be provided; along with a transition fiber if the sensor and sensing fibers are of different sizes. An annular, possibly tapered, waveguide may be provided around the sensing fiber, to better capture the return light. The waveguide may either pass the target objective; or it may be hollow, and define a sample chamber for the target objective. The ends of the sensing fiber and/or the annular waveguide may be mirrored, to dramatically increase the output of return light, and thus, the sensitivity of the sensor system.
    • 一种用于本征型光学感测光纤的多功能传感器系统。 用于激励光纤的数值孔径控制光输入元件可以使感测光纤调制返回光的量最大化。 激发光纤可以以环形或线性阵列的返回纤维为中心,以将激发光注入感测光纤的返回光不良中心; 并从传感纤维的返回光丰富的外部部分捕获返回光。 使返回纤维相对于感测纤维倾斜可能增加其对高数值孔径返回光的捕获。 可以选择激发,返回和感测光纤的相邻端的尺寸和数量,以最小化相邻端之间的任何横向位移的影响。 传感光纤可以产生参考和传感器返回光; 并且可以从可能没有某些系统错误的参考和传感器返回光导出比例输出信号。 可以提供带状传感器和传感纤维; 以及如果传感器和感测纤维具有不同尺寸的转换光纤。 可以围绕感测光纤设置环形的,可能是锥形的波导,以更好地捕获返回光。 波导可以通过目标物体; 或者它可以是中空的,并且为目标物体定义样品室。 感测光纤和/或环形波导的端部可以被镜像,以显着增加返回光的输出,从而显着地增加传感器系统的灵敏度。
    • 15. 发明授权
    • Adaptive noise abatement system
    • 自适应噪声消除系统
    • US4829590A
    • 1989-05-09
    • US818363
    • 1986-01-13
    • Rabindra N. Ghose
    • Rabindra N. Ghose
    • G10K11/178H04B1/12
    • G10K11/178H04B1/126G10K2210/1281G10K2210/3027G10K2210/3225
    • Devices and methods for minimizing multifrequency acoustic or electromagnetic noise that is propagated from its source to a remote region where the noise is to be abated by adaptive means are described herein. The noise minimization is achieved by sampling a noise, synthesizing from this sample a counternoise, the source of which is close to the noise source, and allowing the counternoise to propagate toward said region such that the noise and counternoise cancel each other as they arrive at said region. A closed-loop control is used to adjust the amplitude and time delay, or phase in case of monochromatic noise, of the counternoise during the synthesis, until the residual noise at said region becomes zero. For closed-loop control, the residual noise is transmitted back to the counternoise source by a communication link so that it can be used for said synthesis of the counternoise. The closed-loop control maintains the noise null at said region, even when the distance between the noise and said region changes with time.
    • 这里描述了用于使从其源传播到远程区域的多频声学或电磁噪声最小化的装置和方法,其中噪声将被自适应装置减轻。 噪声最小化是通过对噪声进行采样来实现的,该信号从该样本合成,其源头靠近噪声源,并且允许周界向所述区域传播,使得噪声和空间在它们到达时抵消彼此 说区域。 在合成期间,使用闭环控制来调节在单色噪声的情况下的振幅和时间延迟或相位,直到所述区域的残余噪声变为零。 对于闭环控制,通过通信链路将剩余噪声传送回连续信号源,以便可以将其用于所述的统一的合成。 即使当噪声和所述区域之间的距离随时间变化时,闭环控制也保持在所述区域处的噪声为零。
    • 19. 发明授权
    • Shipping container interrogation apparatus and methods
    • 船运集装箱询问装置及方法
    • US08881574B2
    • 2014-11-11
    • US12460782
    • 2009-07-24
    • Elric W. Saaski
    • Elric W. Saaski
    • G01N7/00G01N1/22G01N1/00G01N1/02
    • G01N1/2226G01N2001/022G01N2001/2223
    • A shipping container interrogation apparatus and method that utilizes the tubular frame members of the container to deliver input air to the interior of the container, and to receive sample air from the interior of the container. A detection apparatus may be used to detect an unauthorized material in the sample air that is received from the interior of the container. Sample air from the detection apparatus may be recycled back into the container by use of a tubular frame member of the container. Input air may be delivered to the interior of the container with turbulence and in any desired direction or pattern for better interrogation of the interior of the container.
    • 一种运输集装箱询问装置和方法,其利用容器的管状框架构件将输入空气输送到容器的内部,并从容器的内部接收样品空气。 检测装置可以用于检测从容器的内部接收的样品空气中的未经授权的材料。 来自检测装置的样品空气可以通过使用容器的管状框架构件再循环回到容器中。 输入空气可以以湍流和任何期望的方向或图案输送到容器的内部,以更好地询问容器的内部。