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公开(公告)号：US09834237B2
公开(公告)日：2017-12-05
申请号：US14841209
申请日：2015-08-31
Applicant: General Electric Company
Inventor： Yuri Alexeyevich Plotnikov , Brett Alexander Matthews , Ajith Kuttannair Kumar , Jeffrey Michael Fries , Joseph Forrest Noffsinger , Samhitha Palanganda Poonacha , Tannous Frangieh , Frederick Wilson Wheeler , Brian Lee Staton , Timothy Robert Brown , Gregory Boverman , Majid Nayeri
CPC classification number: B61L23/044 , B61L3/18
Abstract: Systems and methods for examining a route inject one or more electrical examination signals into a conductive route from onboard a vehicle system traveling along the route, detect one or more electrical characteristics of the route based on the one or more electrical examination signals, apply a filter to the one or more electrical characteristics, and detect a break in conductivity of the route responsive to the one or more electrical characteristics decreasing by more than a designated drop threshold for a time period within a designated drop time period. Feature vectors may be determined for the electrical characteristics and compared to one or more patterns in order to distinguish between breaks in the conductivity of the route and other causes for changes in the electrical characteristics.
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公开(公告)号：US09645076B2
公开(公告)日：2017-05-09
申请号：US14583288
申请日：2014-12-26
Applicant: General Electric Company
Inventor： Nagapriya Kavoori Sethumadhavan , Sandip Maity , Samhitha Palanganda Poonacha , Moitrayee Mukherjee , Purbasha Halder , Harish Sasikumar , Prasenjit Pandey
CPC classification number: G01N21/31 , G01J3/433 , G01N21/03 , G01N21/3504 , G01N21/39 , G01N2201/061
Abstract: A method for determining a concentration of at least one individual gas present in a gas-mixture includes irradiating a first component by incident modulated-light-beams characterized by a determined absorption wavelength range, modulation frequencies and a modulation amplitudes to generate first transmitted-light-beams, irradiating a second component, comprising a determined concentration of the at least one individual gas, by the first incident modulated-light-beams to generate second transmitted-light-beams, generating noise signals representative of a characteristic of the first transmitted-light-beams, generating noise-free signals representative of a characteristic of the second transmitted-light-beams, selecting an optimal modulation frequency and an optimal modulation amplitude from the modulation frequencies and the modulation amplitudes based on the noise signals and the noise-free signals, and determining a concentration of the at least one individual gas in the gas-mixture based on the optimal modulation frequency and the optimal modulation amplitude of the determined absorption wavelength range.
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公开(公告)号：US20170059476A1
公开(公告)日：2017-03-02
申请号：US14837200
申请日：2015-08-27
Applicant: General Electric Company
CPC classification number: G01N21/255 , G01N21/27 , G01N21/31 , G01N21/3504 , G01N2021/1704 , G01N2021/3174 , G01N2021/3177 , G01N2201/061 , G01N2201/068
Abstract: A gas analysis system and method filter different wavelengths of incident light using a variable light filter at different locations along a length of the variable light filter to form filtered light. The variable light filter is configured to be disposed between a light source generating plural different wavelengths of the incident light and a gas sample. Intensities of wavelengths of the filtered light are determined after the incident light generated by the light source passes through the variable light filter and the gas sample. The gas sample may be identified from among different potential gasses based on the intensity of the one or more wavelengths of the filtered light that is determined by the light detector.
Abstract translation: 气体分析系统和方法使用可变滤光器在不同位置沿着可变滤光器的长度对不同波长的入射光进行滤光，以形成滤光。 可变光滤波器被配置为设置在产生入射光的多个不同波长的光源和气体样本之间。 在由光源产生的入射光穿过可变滤光器和气体样品之后，确定经过滤光的波长的强度。 可以基于由光检测器确定的经滤光的一个或多个波长的强度，从不同的潜在气体中识别气体样品。
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公开(公告)号：US20160187251A1
公开(公告)日：2016-06-30
申请号：US14583288
申请日：2014-12-26
Applicant: General Electric Company
Inventor： Nagapriya Kavoori Sethumadhavan , Sandip Maity , Samhitha Palanganda Poonacha , Moitrayee Mukherjee , Purbasha Halder , Harish Sasikumar , Prasenjit Pandey
CPC classification number: G01N21/31 , G01J3/433 , G01N21/03 , G01N21/3504 , G01N21/39 , G01N2201/061
Abstract: A method for determining a concentration of at least one individual gas present in a gas-mixture includes irradiating a first component by incident modulated-light-beams characterized by a determined absorption wavelength range, modulation frequencies and a modulation amplitudes to generate first transmitted-light-beams, irradiating a second component, comprising a determined concentration of the at least one individual gas, by the first incident modulated-light-beams to generate second transmitted-light-beams, generating noise signals representative of a characteristic of the first transmitted-light-beams, generating noise-free signals representative of a characteristic of the second transmitted-light-beams, selecting an optimal modulation frequency and an optimal modulation amplitude from the modulation frequencies and the modulation amplitudes based on the noise signals and the noise-free signals, and determining a concentration of the at least one individual gas in the gas-mixture based on the optimal modulation frequency and the optimal modulation amplitude of the determined absorption wavelength range.
Abstract translation: 用于确定气体混合物中存在的至少一种单独气体的浓度的方法包括通过入射的调制光束照射第一分量，其特征在于确定的吸收波长范围，调制频率和调制幅度，以产生第一透射光 - 通过所述第一入射调制光束照射包含所述至少一种单独气体的确定浓度的第二组分以产生第二透射光束，产生表示所述第一透射光束的特性的噪声信号， 产生表示第二透射光束的特性的无噪声信号，基于噪声信号和无噪声从调制频率和调制幅度中选择最佳调制频率和最佳调制幅度 信号，并确定气体混合物中的至少一种单独气体的浓度 基于所确定的吸收波长范围的最佳调制频率和最佳调制幅度。
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