公开(公告)号：US20060203248A1

公开(公告)日：2006-09-14

申请号：US11078527

申请日：2005-03-11

Applicant: Thomas Reichardt ,  Amy Luong ,  Thomas Kulp ,  Sanjay Devdas

Inventor： Thomas Reichardt ,  Amy Luong ,  Thomas Kulp ,  Sanjay Devdas

IPC: G01N21/00

CPC classification number: G01N21/314 ,  G01M3/20 ,  G01M3/38 ,  G01N21/53

Abstract: A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formated into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimosed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.

Abstract translation: 描述了适用于确定具有背景浓度的气体泄漏位置的系统。 该系统是一个点向后向散射吸收气体测量系统，其测量到图像每个点的吸收和距离。 吸收测量提供了所关注的气体总量的指示，并且距离提供了气体的背景浓度的估计。 从与吸收测量光一起产生的激光脉冲的飞行时间测量距离。 测量结果形成了超过背景气体存在的图像。 或者，将场景的图像叠加在气体的图像上以帮助定位泄漏。 通过进一步建模过量气体作为具有已知浓度分布的羽流，本系统提供所关注气体的最大浓度的估计。

公开(公告)号：US20050053104A1

公开(公告)日：2005-03-10

申请号：US10658906

申请日：2003-09-10

Applicant: Thomas Kulp ,  Dahv Kliner ,  Ricky Sommers ,  Uta-Barbara Goers ,  Karla Armstrong

Inventor： Thomas Kulp ,  Dahv Kliner ,  Ricky Sommers ,  Uta-Barbara Goers ,  Karla Armstrong

IPC: G01M3/38 ,  G01N21/39 ,  H01S3/091 ,  H01S3/10

CPC classification number: G01N21/39 ,  G01M3/38 ,  G01N2021/1795 ,  G01N2021/4709 ,  G01N2201/0214

Abstract: The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of “invisible” gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.

Abstract translation: 可以使用调谐的光源来确定对肉眼不可见的气体的位置，该调谐光源光谱地探测可以提供对应于气体吸收的图像的气体和照相机。 本发明是用于后向散射吸收气体成像（BAGI）系统的光源和包含光源的光源，其可以用于远程检测和产生“不可见”气体的图像。 本发明的光源具有发光元件，光放大器和光参量振荡器，以在IR中产生波长可调光。 通过使用多模光源和使用915nm泵浦源的放大器，光源的功耗被降低到可以长时间由电池操作的水平。 此外，光源可以在许多碳氢化合物的吸收带上调节，使其可用于检测有害气体。