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    Digital IR gas analyzer
    91.
    发明授权
    Digital IR gas analyzer 失效
    数字红外气体分析仪

    公开(公告)号：US4678914A

    公开(公告)日：1987-07-07

    申请号：US605702

    申请日：1984-04-30

    Applicant: Richard C. Melrose ,  Lionel D. McIntosh

    Inventor： Richard C. Melrose ,  Lionel D. McIntosh

    IPC: G01N21/31 ,  G01N21/35 ,  G01J1/00

    CPC classification number: G01N21/3518 ,  G01N2021/3129 ,  G01N2021/3159 ,  G01N2201/126 ,  G01N2201/127

    Abstract: A digital IR gas analyzer comprises a sample cell having a conical shaped interior wall and a filter wheel provided with HC, CO and CO2 interference filters. The filter wheel and IR detector are temperature stabilized. The HC, CO and CO2 gas samples are normalized to a precision reference voltage. The normalized samples are digitized and processed, i.e., for linearization, cross-talk correction and zero drift temperature compensation, by a digital processor. The processed samples are then converted to analog to drive HC, CO and CO2 meters. HC, CO and CO2 gas channels are zeroed simultaneously and calibrated automatically in response to control panel switches.

    Abstract translation: 数字红外气体分析仪包括具有锥形内壁的样品池和设有HC，CO和CO 2干扰滤光器的滤光轮。 滤光轮和红外探测器温度稳定。 将HC，CO和CO2气体样品归一化为精密参考电压。 通过数字处理器将归一化样本数字化并处理，即用于线性化，串扰校正和零漂移温度补偿。 然后将经处理的样品转化为模拟物，以驱动HC，CO和CO2计。 HC，CO和CO2气体通道同时归零，并根据控制面板开关自动校准。

    Grain quality analyzer
    93.
    发明授权
    Grain quality analyzer 失效
    谷物质量分析仪

    公开(公告)号：US4260262A

    公开(公告)日：1981-04-07

    申请号：US964191

    申请日：1978-11-28

    Applicant: Donald R. Webster

    Inventor： Donald R. Webster

    IPC: G01J1/18 ,  G01J3/12 ,  G01N21/31 ,  G01N21/35 ,  G01N21/27

    CPC classification number: G01N21/314 ,  G01N21/3563 ,  G01J2001/182 ,  G01J2003/1243 ,  G01N21/35 ,  G01N21/4738 ,  G01N2201/126 ,  G01N2201/12753 ,  G01N2201/1283 ,  Y10S250/91

    Abstract: An improved grain quality analyzer, for analyzing the percentage concentration of various constituents, e.g. protein and water, in a grain sample, photo-optically measures the change in the optical density of the sample, .DELTA. OD, in a range of characteristic wavelengths and, for protein, in a range of neutral wavelengths and uses these measured values to compute the percentage concentration of the constituents.A grain sample is irradiated with light, the wavelength of which sweeps across the infrared light-spectrum including a range of wavelengths termed characteristic wavelengths, and, for protein, a range of wavelengths termed neutral wavelengths. The characteristic wavelengths are those wavelengths at which the optical characteristics of the irradiated sample, that is, the optical density, reflectivity, transmissivity, and/or absorption, are known to vary as a function of the concentration of the measured constituent, and, for the protein measurement, the neutral wavelengths are those wavelengths at which the optical characteristics are substantially independent of the concentration of the protein.In the preferred embodiment, photo-optical sensors measure the light reflected from the sample and provide output signals indicative of the optical density of the sample as a function of the wavelength of the irradiating light. Control and computing means sample the sensor output at spaced apart points in the range of characteristic wavelengths and in the range of neutral wavelengths to provide signals representative of the optical characteristics of the sample. Computing circuitry computes the percentage concentration of water and, for protein, computes the percentage concentration using an algorithm in accordance with the present invention which eliminates the inaccuracies introduced by light scattering from the sample.

    Abstract translation: 改进的谷物质量分析仪，用于分析各种成分的百分浓度，例如 蛋白质和水在晶粒样品中光学测量样品光密度的变化，在特定波长范围内，对于蛋白质，在一定范围的中性波长，并使用这些测量值来计算 成分的浓度百分比。 用光照射晶粒样品，其波长扫过包括称为特征波长的波长范围的红外光谱，并且对于蛋白质，扫描一定范围的称为中性波长的波长。 特征波长是已知辐射样品的光学特性，即光密度，反射率，透射率和/或吸收的波长已知是随测量成分的浓度而变化的，并且对于 蛋白质测量，中性波长是光学特性基本上与蛋白质浓度无关的那些波长。 在优选实施例中，光电传感器测量从样品反射的光，并提供表示样品的光密度的输出信号作为照射光的波长的函数。 控制和计算装置在特征波长范围内和中性波长范围内的间隔开的点采样传感器输出，以提供代表样品的光学特性的信号。 计算电路计算水的百分浓度，并且对于蛋白质，使用根据本发明的算法计算百分比浓度，其消除了来自样品的光散射引入的不准确性。

    URINE ANALYSIS
    99.
    发明公开
    URINE ANALYSIS 审中-公开

    公开(公告)号：US20240077414A1

    公开(公告)日：2024-03-07

    申请号：US18235318

    申请日：2023-08-17

    Applicant: OUTSENSE DIAGNOSTICS LTD.

    Inventor： Yaara Kapp-Barnea

    IPC: G01N21/31 ,  E03D9/00

    CPC classification number: G01N21/3103 ,  E03D9/00 ,  G01N2201/126

    Abstract: Apparatus and methods are described including one or more sensors that are coupled to a toilet bowl, and that are configured to detect one or more urine-related parameters relating to a subject's urine, and at least one computer processor configured to receive the one or more urine-related parameters from the one or more sensors, determine when the subject's urine has an elevated creatinine concentration, and determine a likely cause of the elevated creatinine concentration. Other applications are also described.

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