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1. 发明申请

US20210181023A1 Cavity Enhanced Absorption Spectroscopy using a piecewise tunable laser and hierarchical wavelength determination 有权
公开(公告)号：US20210181023A1
公开(公告)日：2021-06-17
申请号：US16714518
申请日：2019-12-13
申请人： Picarro, Inc.
发明人： Alejandro Dario Farinas , John A. Hoffnagle , Chris W. Rella , Sze Meng Tan
IPC分类号： G01J3/433
摘要： Improved cavity enhanced absorption spectroscopy is provided using a piecewise tunable laser by using a lookup table for laser tuning that is configured specifically for this application. In preferred embodiments this is done in combination with a laser control strategy that provides precise wavelength determination using cavity modes of the instrument as a reference.

2. 发明授权

US09645039B1 Survey area indicators for gas leak detection 有权
公开(公告)号：US09645039B1
公开(公告)日：2017-05-09
申请号：US13733864
申请日：2013-01-03
申请人： Picarro Inc.
发明人： Sze Meng Tan , Chris W. Rella
IPC分类号： G01M3/28
CPC分类号： G01M3/2807 , F02M65/006 , G01M3/007 , G01M3/04 , G01M3/16 , G01M3/24 , G01M3/26 , G01M3/28 , G01M3/38 , G06F15/00 , G06F17/30241
摘要： In some embodiments, content is generated that includes a street map, at least one path on the map indicating a route of travel by a mobile gas measurement device, and at least one indicator on the map that indicates a survey area for a potential gas leak source. The survey area adjoins the path and extends in a substantially upwind direction from the path. The survey area has a boundary determined such that if the potential gas leak source is located in the survey area and has a rate of leakage meeting a minimum leak rate condition, then an estimated probability of detection of a gas leak from the potential source at one or more measurement points along the path satisfies a probability condition.

3. 发明授权

US09322735B1 Systems and methods for determining a gas leak detection survey area boundary 有权
标题翻译：确定气体泄漏检测区域边界的系统和方法
公开(公告)号：US09322735B1
公开(公告)日：2016-04-26
申请号：US13733868
申请日：2013-01-03
申请人： Picarro Inc.
发明人： Sze Meng Tan , Chris W. Rella
IPC分类号： G01M3/04 , G01M3/00 , F02M65/00 , G01M3/16
CPC分类号： G01M3/2807 , F02M65/006 , G01M3/007 , G01M3/04 , G01M3/16 , G01M3/24 , G01M3/26 , G01M3/28 , G01M3/38 , G06F15/00 , G06F17/30241
摘要： 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. The boundary is determined such that if the potential gas leak source is located in the survey area and has a rate of leakage meeting a minimum leak rate condition, then an estimated probability of detection of the gas leak at one or more of the measurement points satisfies a probability condition.
摘要翻译：在一些实施例中，采用至少一个处理器来确定测量区域的边界。接收与测量区域相邻或外部的测量点的位置的数据，以及表示测量点的风向的数据。测量区域的边界根据代表风向的数据确定，最大检测距离值代表从潜在的气体泄漏源估计的最大距离，其中可能检测到来自潜在源的气体泄漏。确定边界，使得如果潜在的气体泄漏源位于测量区域中并且具有满足最小泄漏率条件的泄漏率，则在一个或多个测量点处的估计的气体泄漏检测概率满足概率条件。

4. 发明授权

US11092493B2 Cavity enhanced absorption spectroscopy using a piecewise tunable laser and hierarchical wavelength determination 有权
公开(公告)号：US11092493B2
公开(公告)日：2021-08-17
申请号：US16714518
申请日：2019-12-13
申请人： Picarro, Inc.
发明人： Alejandro Dario Farinas , John A. Hoffnagle , Chris W. Rella , Sze Meng Tan
IPC分类号： G01J3/28 , G01J3/433
摘要： Improved cavity enhanced absorption spectroscopy is provided using a piecewise tunable laser by using a lookup table for laser tuning that is configured specifically for this application. In preferred embodiments this is done in combination with a laser control strategy that provides precise wavelength determination using cavity modes of the instrument as a reference.

5. 发明申请

US20200049556A1 Cavity Ring-Down Spectroscopy having Interleaved Data Acquisition for Interference Mitigation 审中-公开
公开(公告)号：US20200049556A1
公开(公告)日：2020-02-13
申请号：US16399431
申请日：2019-04-30
申请人： Picarro, Inc.
发明人： Chris W. Rella , Hongbing Chen , Derek Gregory Fleck , John A. Hoffnagle , James Ian Lee , Gerald Thomas Sornsen , Sze Meng Tan
IPC分类号： G01J3/02 , G01J3/433
摘要： Interleaved data acquisition in optical spectroscopy is used to provide interference correction for time-varying interference. Measurements at a reference frequency are used to provide an estimate of the interference. These reference measurements are interleaved with the remaining measurements in order to provide estimates of the interference vs. time at relevant times. The interference being corrected can be spectrally structured or unstructured.

6. 发明申请

US20160216172A1 Methods for gas leak detection and localization in populated areas using two or more tracer measurements 审中-公开
标题翻译：使用两次或多次示踪剂测量的人口稠密地区气体泄漏检测和定位方法
公开(公告)号：US20160216172A1
公开(公告)日：2016-07-28
申请号：US15088885
申请日：2016-04-01
申请人： Picarro, Inc.
发明人： Chris W. Rella , Eric R. Crosson , Michael R. Woelk , Sze Meng Tan , Yonggang He , David Steele
IPC分类号： G01M3/04 , G01N33/00
CPC分类号： G01N33/0009 , G01M3/22 , G01M3/38 , G01N21/01 , G01N21/3504 , G01N21/39 , G01N2021/0314 , G01N2201/025
摘要： 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 two or more tracer measurements of 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.
摘要翻译：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。可以通过使用两个或更多个同位素比率和/或化学示踪剂的示踪剂测量来提供源识别，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。

7. 发明授权

US09267880B1 Ring-down binning in FSR hopping mode 有权
标题翻译： FSR跳频模式下的振铃分级
公开(公告)号：US09267880B1
公开(公告)日：2016-02-23
申请号：US14634682
申请日：2015-02-27
申请人： Picarro, Inc.
发明人： Sze Meng Tan , John A. Hoffnagle , Chris W. Rella
IPC分类号： G01N21/61 , G01N21/25 , G01N21/39
CPC分类号： G01N21/39 , G01J3/00 , G01J3/42 , G01J3/427 , G01N2021/399
摘要： For cavity enhanced optical spectroscopy, the cavity modes are used as a frequency reference. Data analysis methods are employed that assume the data points are at equally spaced frequencies. Parameters of interest such as line width, integrated absorption etc. can be determined from such data without knowledge of the frequencies of any of the data points. Methods for determining the FSR index of each ring-down event are also provided.
摘要翻译：对于腔增强光谱，腔模式用作频率参考。采用数据分析方法，假设数据点处于等间隔的频率。可以从这样的数据中确定诸如线宽，积分吸收等的关注参数，而不知道任何数据点的频率。还提供了确定每个减号事件的FSR指数的方法。

8. 发明申请

US20140032160A1 Methods for gas leak detection and localization in populated areas using horizontal analysis 有权
标题翻译：采用横向分析方法对人口稠密地区进行气体泄漏检测和定位
公开(公告)号：US20140032160A1
公开(公告)日：2014-01-30
申请号：US13656080
申请日：2012-10-19
申请人： Picarro, Inc.
发明人： Chris W. Rella , Eric R. Crosson , Michael Woelk , Sze Meng Tan
IPC分类号： G06F15/00
CPC分类号： G01M3/20 , G01N21/3504 , G01N33/0004 , G01N2201/025
摘要： 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.
摘要翻译：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。

9. 发明授权

US11561149B2 Methods for gas leak detection and localization in populated areas having a distance estimate 有权
公开(公告)号：US11561149B2
公开(公告)日：2023-01-24
申请号：US16193688
申请日：2018-11-16
申请人： Picarro, Inc.
发明人： Chris W. Rella , Eric R. Crosson , Michael R. Woelk , Sze Meng Tan
IPC分类号： G01N21/39 , G01M3/20 , G01N21/3504 , G01N21/01 , G01M3/38 , G01N21/31 , G01N21/03
摘要： 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.

10. 发明申请

US20190086287A1 Methods for gas leak detection and localization in populated areas having a distance estimate 审中-公开
公开(公告)号：US20190086287A1
公开(公告)日：2019-03-21
申请号：US16193688
申请日：2018-11-16
申请人： Picarro, Inc.
发明人： Chris W. Rella , Eric R. Crosson , Michael R. Woelk , Sze Meng Tan
IPC分类号： G01M3/20 , G01N21/31 , G01M3/38 , G01N21/39 , G01N21/01 , G01N21/3504
摘要： 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.

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