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公开(公告)号：US11913878B2
公开(公告)日：2024-02-27
申请号：US17637002
申请日：2019-08-28
Applicant: CRC Care PTY LTD
Inventor： Liang Wang , Ying Cheng , Ravi Naidu
CPC classification number: G01N21/35 , G01N33/241 , G01N2021/3595 , G01N2201/123
Abstract: The present invention relates to a method of determining petroleum hydrocarbon fractions (Cn) in a sample, the method including: inputting the sample into a chamber; emitting infrared light from an optical light source into the chamber with the sample; detecting at a detector a detected infrared light from the chamber; transforming the detected infrared light to a Fourier Transform Infrared (FTIR) spectrum of the sample at a processor, wherein the FTIR spectrum has wavenumbers between 4000 and 400 cm−1; processing the FTIR spectrum to identify sub-bands each having at least one doublet of sub-band peaks at respective wavenumbers in a second derivative curve of the FTIR spectrum using a second derivation algorithm implemented by the processor; comparing the at least one doublet of sub-band peaks to data indicative of known doublets of sub-band peaks at known wavenumbers for petroleum hydrocarbon fractions in the FTIR spectrum to classify the petroleum hydrocarbon fractions in the sample; and determining a dominant petroleum hydrocarbon fraction of the petroleum hydrocarbon fractions in the sample based on a ratio of intensities of the sub-band peaks of the at least one doublet for each of the petroleum hydrocarbon fractions in the sample.
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12.发明公开公开(公告)号：US20230288336A1
公开(公告)日：2023-09-14
申请号：US18017698
申请日：2021-05-13
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Fuminori NIIKURA , Ayumu YOSHIMI , Ken KITAZAWA , Takayuki INOUE
IPC: G01N21/64
CPC classification number: G01N21/6408 , G01N2201/123 , G01N2021/6415
Abstract: A time measuring apparatus 10 includes a digital counter 20 that outputs a count signal in response to a clock signal, a plurality of TAC circuits 12 (TAC circuits 12a to 12j) to which a detection signal detected by a detector 4 and a clock signal are input and which output measurement signals corresponding to a time between the detection signal and the clock signal, a control unit 14 that derives and outputs time information related to the detection signal based on the count signal output from the digital counter 20 and the measurement signals output from the TAC circuits 12, and a measurement gate 11 that switches between the TAC circuits 12 to which the detection signal is input, in consideration of dead times of the TAC circuits 12.
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公开(公告)号：US20230280272A1
公开(公告)日：2023-09-07
申请号：US18015382
申请日：2021-07-09
Applicant: VRIJE UNIVERSITEIT BRUSSEL
Inventor： Maarten KUIJK , Hans INGELBERTS , Cedric BAIJOT
IPC: G01N21/64
CPC classification number: G01N21/6408 , G01N21/6458 , G01N2201/123
Abstract: A detection system for detecting fluorescence lifetime includes an excitation light source configured for repeatedly generating pulsed excitation light, and a detector. The detector has a single-photon detection circuit; a pulse-inhibit circuit for rejecting detected photons that occur outside each one of a series of measurement time windows, each subsequent measurement time window starting after a subsequent excitation light pulse has stopped, and stopping before a next excitation light pulse is generated, each measurement time window having a measurement window period; and a switched-capacitor circuit having an input terminal for receiving a voltage ramp signal that is restarted with each new measurement window period. The switched-capacitor circuit is configured for repetitively computing an average voltage. The switched-capacitor circuit has a node for outputting the computed average voltage as a measure of the fluorescence lifetime.
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14.发明授权公开(公告)号：US09970870B2
公开(公告)日：2018-05-15
申请号：US15451160
申请日：2017-03-06
Inventor： Hao Xin , Min Liang , Mark A. Neifeld , Tim Harvey
CPC classification number: G01N21/55 , G01N22/00 , G01N2201/123 , G01N2201/126 , G01V8/005 , H03M7/30 , H03M7/3062
Abstract: A threat detection system having a reconfigurable reflect-array and compressive sensing unit to effectively detect objects that are a threat is presented. A statistical library, having a wide range of threat and non-threat examples and capable of incorporating new examples while being used, is utilized by several optimization algorithms to calculate an optimal illumination pattern for compressive sensing detection. The reflect-array is configured to produce the optimal illumination pattern via a plurality of reflect-array elements. In this way, a plurality of data may be parallel processed, thereby increasing the detection speed and reducing cost.
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Patent Agency Ranking
公开(公告)号：US09709507B2
公开(公告)日：2017-07-18
申请号：US14712975
申请日：2015-05-15
Applicant: RAYTRON Co., LTD
Inventor： Hyun Young Lee , Ji Woong Jang
CPC classification number: G01N21/94 , B01D46/0086 , B01D2273/26 , G01N21/255 , G01N2201/062 , G01N2201/123
Abstract: Provided are an apparatus and method for measuring contamination of a filter. The filter contamination measuring apparatus includes a light-emitting unit which provides light having, a predetermined wavelength to a filter adsorbs foreign materials, a light-receiving unit which receives light reflected by the filter and convert reflected light information into a digital code to output, and a contamination calculating unit which processes the digital code provided by the light-receiving unit and calculates a degree of contamination of the filter, wherein the contamination calculating unit calculates a degree, in which a wavelength of the light reflected by the filter is shifted from the predetermined wavelength, compares intensity of light provided by the light-emitting unit with intensity of the light reflected by the filter, and calculates the degree of contamination of the filter.
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公开(公告)号：US20160061747A1
公开(公告)日：2016-03-03
申请号：US14712975
申请日：2015-05-15
Applicant: RAYTRON Co., LTD
Inventor： Hyun Young LEE , Ji Woong Jang
CPC classification number: G01N21/94 , B01D46/0086 , B01D2273/26 , G01N21/255 , G01N2201/062 , G01N2201/123
Abstract: Provided are an apparatus and method for measuring contamination of a filter. The filter contamination measuring apparatus includes a light-emitting unit which provides light having, a predetermined wavelength to a filter adsorbs foreign materials, a light-receiving unit which receives light reflected by the filter and convert reflected light information into a digital code to output, and a contamination calculating unit which processes the digital code provided by the light-receiving unit and calculates a degree of contamination of the filter, wherein the contamination calculating unit calculates a degree, in which a wavelength of the light reflected by the filter is shifted from the predetermined wavelength, compares intensity of light provided by the light-emitting unit with intensity of the light reflected by the filter, and calculates the degree of contamination of the filter.
Abstract translation: 提供了一种用于测量过滤器污染的装置和方法。 过滤污染测定装置具备发光单元，该发光单元向吸收异物的滤光器提供具有预定波长的光;受光单元，其接收由滤光器反射的光并将反射光信息转换成数字代码输出; 以及污染计算单元，处理由所述光接收单元提供的数字码，并计算所述滤波器的污染程度，其中所述污染计算单元计算由所述滤波器反射的光的波长从 将由发光单元提供的光的强度与由滤光器反射的光的强度进行比较，并计算滤光器的污染程度。
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公开(公告)号：US08901997B2
公开(公告)日：2014-12-02
申请号：US13298066
申请日：2011-11-16
Applicant: Andreas G. Nowatzyk
Inventor： Andreas G. Nowatzyk
CPC classification number: G02F1/39 , G01J3/0264 , G01J3/108 , G01N21/27 , G01N21/64 , G01N21/645 , G01N2201/123 , G02B21/0096 , G02F2001/392 , H03F3/08 , H03F7/00
Abstract: A solid state detection system includes a degenerate photo-parametric amplifier (PPA), wherein the PPA comprises a photo diode, and a periodically pulsed light source, wherein the photo-parametric amplifier (PPA) is synchronized to the pulsed light source with a phase locked loop that generates a pump waveform for the PPA at twice the frequency of the excitation pulse rate.
Abstract translation: 固态检测系统包括退化光参数放大器（PPA），其中PPA包括光电二极管和周期性脉冲光源，其中光参数放大器（PPA）与脉冲光源同步相位 锁定环路，以激励脉冲频率的两倍产生PPA的泵浦波形。
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公开(公告)号：US20130120830A1
公开(公告)日：2013-05-16
申请号：US13298066
申请日：2011-11-16
Applicant: Andreas G. Nowatzyk
Inventor： Andreas G. Nowatzyk
IPC: H01S5/50
CPC classification number: G02F1/39 , G01J3/0264 , G01J3/108 , G01N21/27 , G01N21/64 , G01N21/645 , G01N2201/123 , G02B21/0096 , G02F2001/392 , H03F3/08 , H03F7/00
Abstract: A solid state detection system includes a degenerate photo-parametric amplifier (PPA), wherein the PPA comprises a photo diode, and a periodically pulsed light source, wherein the photo-parametric amplifier (PPA) is synchronized to the pulsed light source with a phase locked loop that generates a pump waveform for the PPA at twice the frequency of the excitation pulse rate.
Abstract translation: 固态检测系统包括退化光参数放大器（PPA），其中PPA包括光电二极管和周期性脉冲光源，其中光参数放大器（PPA）与脉冲光源同步相位 锁定环路，以激励脉冲频率的两倍产生PPA的泵浦波形。
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公开(公告)号：US20120055232A1
公开(公告)日：2012-03-08
申请号：US12876501
申请日：2010-09-07
Applicant: Walter R. Thorson
Inventor： Walter R. Thorson
IPC: G01N21/17
CPC classification number: G01N21/1702 , G01N2201/1211 , G01N2201/1214 , G01N2201/1218 , G01N2201/123
Abstract: A flexible gas sensor includes a housing with a predetermined form factor, a photoacoustic gas sensing chamber, and at least one of acoustic, temperature, relative humidity or pressure sensors in combination with processing circuitry which can emulate the characteristic gas response output of a catalytic bead pellistor-type gas sensor in response to a selected gas. The processing circuitry can include a programmable processor and a storage unit. The storage unit can be loaded with data and executable instructions to specify, at least in part, how the signals from the photoacoustic sensor are to be processed by the processing circuitry.
Abstract translation: 柔性气体传感器包括具有预定形状因数的壳体，光声气体检测室以及与处理电路组合的声学，温度，相对湿度或压力传感器中的至少一个，其可以模拟催化珠粒的特征气体响应输出 响应于所选气体的电阻型气体传感器。 处理电路可以包括可编程处理器和存储单元。 存储单元可以被加载数据和可执行指令，以至少部分地指定来自光声传感器的信号将如何由处理电路来处理。
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