公开(公告)号：US4634856A

公开(公告)日：1987-01-06

申请号：US637627

申请日：1984-08-03

Applicant: Randy R. Kirkham

Inventor： Randy R. Kirkham

IPC: G01N21/43 ,  G01N21/77 ,  G01N21/81 ,  G01N21/85 ,  H01J5/16

CPC classification number: G01N21/7703 ,  G01N21/431 ,  G01N21/81 ,  G01N21/8507

Abstract: A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

Abstract translation: 一种利用光纤技术检测水分变化的方法和装置。 一个实施例在光纤端部使用反射目标。 目标的反射率随其含水量而变化，并且可以通过光纤相对端的远程单元检测。 第二实施例利用沿光纤长度的光损耗的变化。 这可归因于作为其含水量的函数的包层材料的反射率的变化。 它还可能受到插入包层材料和/或纤维中的孔或插入物的影响。 在纤维组合中，改变的光水平也可以从一个纤维耦合到另一个纤维，这是随着包层材料的重叠长度变化的水分含量的函数。

公开(公告)号：US06191851B1

公开(公告)日：2001-02-20

申请号：US09301650

申请日：1999-04-28

Applicant: Randy R. Kirkham ,  Janelle L. Downs ,  Eileen M. Perry

Inventor： Randy R. Kirkham ,  Janelle L. Downs ,  Eileen M. Perry

IPC: G01J110

CPC classification number: G01N21/278 ,  G01J3/52 ,  G01J3/524

Abstract: The present invention is an apparatus and method for calibrating a downward viewing image acquisition system. The apparatus comprises a calibration panel with calibrative material of known reflectivity. The calibrative material coats the panel surface or is pulled across its surface or pulled across its frame so as to maintain a consistent reflectivity and/or emissivity. A housing is provided which protects the calibration panel from the deteriorative effects of natural elements. The housing alternately exposes the calibration panel to the downward viewing image acquisition system as a calibration exposure and covers the calibration panel after the calibration exposure.

Abstract translation: 本发明是用于校准向下观看图像采集系统的装置和方法。 该装置包括具有已知反射率的校准材料的校准面板。 校准材料涂覆面板表面或拉过其表面或拉过其框架，以保持一致的反射率和/或发射率。 提供了一种保护校准面板免受自然元素恶化影响的外壳。 外壳将校准面板交替地暴露于向下观察图像采集系统作为校准曝光，并在校准曝光后覆盖校准面板。

公开(公告)号：US06474176B1

公开(公告)日：2002-11-05

申请号：US09624185

申请日：2000-07-25

Applicant: Glendon W. Gee ,  Jason C. Ritter ,  Anderson L. Ward ,  Randy R. Kirkham

Inventor： Glendon W. Gee ,  Jason C. Ritter ,  Anderson L. Ward ,  Randy R. Kirkham

IPC: G01F144

CPC classification number: G01F1/44 ,  G01F1/684

Abstract: A fluid flow device for determining fluid flow rates in soils includes a conduit for receiving a fluid. The conduit has a reduced channel portion to form a reduced channel portion which amplifies the fluid flow rate of the fluid. A sensor device is coupled in sensing relation relative to the conduit and configured for measuring the amplified fluid flow rate as the fluid flows through the reduced channel portion.

Abstract translation: 用于确定土壤中的流体流速的流体流动装置包括用于接收流体的导管。 导管具有减小的通道部分以形成减小的流体部分，该部分放大流体的流体流速。 传感器装置相对于导管以感测关系耦合，并被配置用于当流体流过减小的通道部分时测量放大的流体流速。

公开(公告)号：US4899047A

公开(公告)日：1990-02-06

申请号：US210874

申请日：1988-06-24

Applicant: John W. Cry ,  Randy R. Kirkham ,  John F. McBride ,  Carver S. Simmons ,  Glendon W. Gee

Inventor： John W. Cry ,  Randy R. Kirkham ,  John F. McBride ,  Carver S. Simmons ,  Glendon W. Gee

IPC: G01N15/06 ,  G01N21/59 ,  G01N21/85 ,  G01N33/24

CPC classification number: G01N21/59 ,  G01N33/241 ,  G01N33/246 ,  G01N15/0631 ,  G01N21/8507 ,  G01N2201/0621

Abstract: Oil is detected in the presence of water by placing a translucent, porous body of hydrophobic material in contact with the oil and water and detecting the amount by which light incident on the body is attenuated on propagation through the body.

Abstract translation: 在水的存在下通过放置与油和水接触的半透明多孔的疏水材料体并检测入射到身体上的光在通过身体传播时被衰减的量来检测油。