公开(公告)号：US09557240B1

公开(公告)日：2017-01-31

申请号：US13733857

申请日：2013-01-03

Applicant: Picarro Inc.

Inventor： Sze Meng Tan ,  Eric R. Crosson ,  Chris W. Rella

IPC: G06F15/00 ,  G01M3/28 ,  G01M3/24 ,  G01M3/26

CPC classification number: G01M3/2807 ,  F02M65/006 ,  G01M3/007 ,  G01M3/04 ,  G01M3/16 ,  G01M3/24 ,  G01M3/26 ,  G01M3/28 ,  G01M3/38 ,  G06F15/00 ,  G06F17/30241

Abstract: In some embodiments, a computer system generates display content indicating a likely direction and estimated distance to a potential gas leak source. The content includes a street map and at least one search area indicator on the map that indicates a search area suspected to have a gas leak source. The search area indicator has an axis indicating a representative wind direction relative to a geo-referenced location of at least one gas concentration measurement point. The search area indicator also has a width relative to the axis. The width is indicative of a wind direction variability associated with a plurality of wind direction measurements in an area of the gas concentration measurement point. The axis also preferably has a length indicating an estimated maximum distance to the potential gas leak source.

Abstract translation: 在一些实施例中，计算机系统产生指示潜在的气体泄漏源的可能方向和估计距离的显示内容。 该内容包括地图上的街道地图和至少一个搜索区域指示符，其指示怀疑具有气体泄漏源的搜索区域。 搜索区域指示器具有指示相对于至少一个气体浓度测量点的地理参考位置的代表风向的轴。 搜索区域指示符也具有相对于轴的宽度。 宽度表示与气体浓度测量点的区域中的多个风向测量相关联的风向变化。 该轴还优选具有指示到潜在气体泄漏源的估计最大距离的长度。

公开(公告)号：US20170010175A1

公开(公告)日：2017-01-12

申请号：US15275434

申请日：2016-09-25

Applicant: Picarro, Inc.

Inventor： Chris W. Rella

IPC: G01M3/04 ,  G01N33/00

CPC classification number: G01N1/26 ,  G01M3/20 ,  G01N1/2273 ,  G01N21/3504 ,  G01N33/0004 ,  G01N33/0062 ,  G08B21/12

Abstract: Repeated simultaneous concentration measurements at spatially separated points are used to provide information on the lateral spatial extent of a gas plume. More specifically the spatial correlations in this data provide this information. Fitting a gas plume model directly to this multi-point data can provide good estimates of total plume emission. The distance between the plume source and the measurement points does not need to be known to provide these estimates. It is also not necessary to perform any detailed atmospheric modeling. These estimates of the lateral spatial extent of a gas plume can also be used to provide a distance estimate to the source of the gas plume.

Abstract translation: 在空间分离的点上重复的同时浓度测量被用于提供关于气体羽流的横向空间范围的信息。 更具体地说，该数据中的空间相关性提供了该信息。 将气体羽毛模型直接装配到该多点数据可以提供总羽流发射的良好估计。 不需要知道羽流源与测量点之间的距离来提供这些估计值。 也不需要进行任何详细的大气建模。 气体羽流的横向空间范围的这些估计也可以用于向气体羽流的源提供距离估计。

公开(公告)号：US09500556B2

公开(公告)日：2016-11-22

申请号：US13656123

申请日：2012-10-19

Applicant: Picarro, Inc.

Inventor： Chris W. Rella ,  Eric R. Crosson ,  Sze Meng Tan

IPC: G06F15/00 ,  G01M3/20 ,  G01N21/3504 ,  G01N21/39 ,  G01M3/38 ,  G01N21/03

CPC classification number: G01M3/20 ,  G01M3/38 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0314 ,  G01N2201/025

Abstract: Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

Abstract translation: 提供了从移动平台改进的气体泄漏检测。 可以进行自动水平空间尺度分析，以区分泄漏与被测气体的背景水平。 可以通过使用同位素比率和/或化学示踪剂来提供源识别，以区分气体泄漏与测量气体的其他来源。 多点测量结合多点测量结果的空间分析可以提供泄漏源距离估计。 这些方法可以单独或以任何组合实施。

公开(公告)号：US09310346B1

公开(公告)日：2016-04-12

申请号：US13715026

申请日：2012-12-14

Applicant: Picarro, Inc.

Inventor： Chris W. Rella ,  Pieter P. Tans

IPC: G01N7/00 ,  G01N33/00

CPC classification number: G01N33/0009

Abstract: A gas sample storage chamber is used to continuously acquire a gas sample. After the sample has been acquired, the stored gas in the chamber can be analyzed. This analysis can provide a time history of the gas sample, since mixing and diffusion of the gas sample in the chamber can be made sufficiently negligible. The gas flow rate for analysis differs significantly from the acquisition flow rate.

Abstract translation: 气体样品储存室用于连续获取气体样品。 在采集样品之后，可以分析室中的储存气体。 该分析可以提供气体样品的时间历程，因为气体样品在室中的混合和扩散可以被充分地忽略。 用于分析的气体流量与采集流速显着不同。

公开(公告)号：US20160011101A1

公开(公告)日：2016-01-14

申请号：US14714658

申请日：2015-05-18

Applicant: Lawrence Livermore National Security, LLC ,  Picarro, Inc.

Inventor： Ted Ognibene ,  Graham Bench ,  Alan Daniel McCartt ,  Kenneth Turteltaub ,  Chris W. Rella ,  Sze Tan ,  John A. Hoffnagle ,  Nabil Saad ,  Eric Crosson

IPC: G01N21/31 ,  H01J49/04 ,  H01J49/00 ,  G01J3/42

CPC classification number: G01N21/3103 ,  G01J3/027 ,  G01J3/28 ,  G01J3/42 ,  G01N21/39 ,  G01N2021/391 ,  G01N2021/399 ,  H01J49/0086

Abstract: Optical spectrometer apparatus, systems, and methods for analysis of carbon-14 including a resonant optical cavity configured to accept a sample gas including carbon-14, an optical source configured to deliver optical radiation to the resonant optical cavity, an optical detector configured to detect optical radiation emitted from the resonant cavity and to provide a detector signal; and a processor configured to compute a carbon-14 concentration from the detector signal, wherein computing the carbon-14 concentration from the detector signal includes fitting a spectroscopic model to a measured spectrogram, wherein the spectroscopic model accounts for contributions from one or more interfering species that spectroscopically interfere with carbon-14.

Abstract translation: 用于分析碳-14的光谱仪装置，系统和方法，包括被配置为接受包含碳-14的样品气体的共振光学腔，构造成将光辐射传递到谐振光学腔的光源，被配置为检测 从谐振腔发射的光辐射并提供检测器信号; 以及处理器，被配置为从检测器信号计算碳-14浓度，其中从检测器信号计算碳-14浓度包括将光谱模型拟合到测量的光谱图，其中光谱模型考虑来自一个或多个干扰物种的贡献 光谱干扰碳-14。

公开(公告)号：US20150007638A1

公开(公告)日：2015-01-08

申请号：US14493853

申请日：2014-09-23

Applicant: Picarro, Inc.

Inventor： Chris W. Rella ,  Eric R. Crosson ,  Michael R. Woelk ,  Sze Meng Tan ,  Yonggang He ,  David Steele

IPC: G01M3/04 ,  G01N33/00

CPC classification number: G01N33/0009 ,  G01M3/20 ,  G01M3/38 ,  G01N21/01 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0314 ,  G01N2201/025

Abstract: Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. Qualitative source identification is provided. These methods can be practiced individually or in any combination.

Abstract translation: 提供了从移动平台改进的气体泄漏检测。 可以进行自动水平空间尺度分析，以区分泄漏与被测气体的背景水平。 可以通过使用同位素比率和/或化学示踪剂来提供源识别，以区分气体泄漏与测量气体的其他来源。 多点测量结合多点测量结果的空间分析可以提供泄漏源距离估计。 提供定性来源识别。 这些方法可以单独或以任何组合实施。

公开(公告)号：US20250027856A1

公开(公告)日：2025-01-23

申请号：US18225012

申请日：2023-07-21

Applicant: Picarro, Inc.

Inventor： Kai M. Skog ,  James M. Hamilton ,  Chris W. Rella ,  Bruce A. Richman ,  Elizabeth R. Schemm ,  Rebecca Wernis

IPC: G01N1/40 ,  G01N1/44 ,  G01N21/31

Abstract: Improved gas sample preprocessing is provided for scanning optical spectroscopic analysis instruments by tailoring characteristic gas handling times to the scan time Ts of the analysis instrument. In particular, for sample preconcentration, the desorption duration Td of the sample preconcentrator should be ≥2Ts. For gas chromatography, the elution duration Te of relevant eluted species should be ≥2Ts. This advantageously avoids having significant changes in the gas sample within the analysis instrument as a scan is being performed.

公开(公告)号：US10732014B2

公开(公告)日：2020-08-04

申请号：US15385233

申请日：2016-12-20

Applicant: Picarro, Inc.

Inventor： Sean Patrick MacMullin ,  Chris W. Rella

IPC: G01M3/04 ,  G01F1/00 ,  G01M3/38

Abstract: Flux estimates for gas plumes from gas leaks are obtained from a 1-D horizontal line scan of gas concentration measurements, combined with an estimate of the vertical extent of the gas plume. In this manner, flux estimates for gas plumes can be obtained without having to gather a 2-D image of gas concentration data.

公开(公告)号：US10598562B2

公开(公告)日：2020-03-24

申请号：US14948287

申请日：2015-11-21

Applicant: Picarro Inc.

Inventor： David Steele ,  Chris W. Rella ,  Sze M. Tan ,  Aaron Van Pelt

IPC: G01M3/22 ,  G01P13/02 ,  G01P5/02 ,  F17D5/02 ,  G01M3/04 ,  G01C21/36

Abstract: In some embodiments, a natural gas leak detection system generates display content including indicators of remote and local potential leak source areas situated on a map of an area of a gas concentration measurement survey performed by a vehicle-borne device. The remote area may be shaped as a wedge extending upwind from an associated gas concentration measurement point. The local area graphically represents a potential local leak source area situated around the gas concentration measurement point, and having a boundary within a predetermined distance (e.g. 10 meters) of the gas concentration measurement point. The local area may be represented as a circle, ellipse, or other shape, and may include an area downwind from the measurement point. Size and/or shape parameters of the local area indicator may be determined according to survey vehicle speed and direction data, and/or wind speed and direction data characterizing the measurement point.

公开(公告)号：US10466132B1

公开(公告)日：2019-11-05

申请号：US16450606

申请日：2019-06-24

Applicant: Picarro Inc.

Inventor： Sze M. Tan ,  Chris W. Rella

IPC: G01M3/28 ,  G01M3/00 ,  F02M65/00 ,  G06F15/00 ,  G06F16/29 ,  G01M3/04 ,  G01M3/38 ,  G01M3/24 ,  G01M3/16 ,  G01M3/26

Abstract: In some embodiments, at least one processor is employed to determine a boundary of a survey area. Data representative of the locations of measurement points adjacent to or outside of the survey area is received, as well as data representative of wind direction at the measurement points. The boundary of the survey area is determined according to the data representative of wind direction and a maximum detection distance value representative of an estimated maximum distance from a potential gas leak source at which a gas leak from the potential source can be detected.