中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

281 records (took 0.014 seconds)

    Optical analyzer for agricultural products
    91.
    发明授权
    Optical analyzer for agricultural products 失效
    农业产品光学分析仪

    公开(公告)号：US4037970A

    公开(公告)日：1977-07-26

    申请号：US653848

    申请日：1976-01-30

    Applicant: Donald R. Webster ,  Eugene R. Ganssle

    Inventor： Donald R. Webster ,  Eugene R. Ganssle

    IPC: G01J1/18 ,  G01J3/12 ,  G01J3/28 ,  G01N21/31 ,  G01N21/35 ,  G01N33/10 ,  G01J3/48

    CPC classification number: G01N21/314 ,  G01N33/10 ,  G01J2001/182 ,  G01J2003/1243 ,  G01J2003/2866 ,  G01N2021/3129 ,  G01N2021/3159 ,  G01N2021/4769 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/4738 ,  G01N2201/1283

    Abstract: An automatic test instrument for gaging the percentage of various constituents in organic substances by comparing the reflective optical density of the subject at various wavelengths. Narrow band optical filters are connected together in the form of a rotatable paddle wheel positioned so that the filters can be individually swept through the incident light path between the specimen and wideband light source. As the filter wheel turns, the band of light passed by each filter is progressively shifted with the changing angle of the filter relative to the light path. The filter wheel configuration includes opaque vanes extending from the ends of the filters to periodically interrupt the passage of light to the specimen. Photocells are positioned to sense the level of light reflected from the specimen. The output of the photocells is sampled at predetermined times relative to the rotation of the filter wheel to yield values indicative of reflected intensity at certain wavelengths. Using these values, an electronic circuit in one embodiment calculates three optical density difference values corresponding to moisture, protein and oil content of the specimen. The difference values are automatically inserted in three linear equations which are solved to obtain readings representing the true percentages of oil, water and protein contained in the specimen. Each time a new specimen is loaded for testing, the instrument is automatically calibrated against a standard sample, preferably Teflon (Trademark). The output of the photocells is amplified in a special circuit which subtracts the level of dark period current from the output when the photocells are illuminated.

    Optical analysis of biomedical specimens
    92.
    发明授权
    Optical analysis of biomedical specimens 失效
    生物医学标本的光学分析

    公开(公告)号：US4017192A

    公开(公告)日：1977-04-12

    申请号：US547658

    申请日：1975-02-06

    Applicant: Robert D. Rosenthal

    Inventor： Robert D. Rosenthal

    IPC: A61B5/00 ,  G01J1/18 ,  G01J3/12 ,  G01N21/31 ,  G01N21/35 ,  G01N21/59 ,  G01N21/22

    CPC classification number: A61B5/0059 ,  G01N21/314 ,  G01J2001/182 ,  G01J2003/1243 ,  G01N21/35 ,  G01N21/59

    Abstract: A technique for automatic detection of abnormalities, particularly pathology, in biomedical specimens. Light transmittance or reflectance data over a large number of wavelengths for numerous samples are correlated mathematically with conventional clinical results to select test wavelengths and constants for a correlation equation. Optical instrumentation with an analog or digital computer applies the resulting correlation equation to the spectral data on a given specimen at the test wavelengths to determine quantitatively the presence of the abnormality.

    Abstract translation: 用于自动检测生物医学标本中的异常特别是病理学的技术。 对于许多样品，大量波长上的透光率或反射率数据与常规临床结果数学相关，以选择相关方程的测试波长和常数。 使用模拟或数字计算机的光学仪器将所得的相关方程应用于在测试波长处的给定样本上的光谱数据，以确定定量存在异常。

    Continuously monitoring ratiometer
    93.
    发明授权
    Continuously monitoring ratiometer 失效
    连续监测比率计

    公开(公告)号：US3981586A

    公开(公告)日：1976-09-21

    申请号：US578500

    申请日：1975-05-19

    Applicant: Larkin B. Scott

    Inventor： Larkin B. Scott

    IPC: G01R19/10 ,  G01J1/18 ,  G06G7/161 ,  G01J3/42

    CPC classification number: G01J1/18 ,  G06G7/161

    Abstract: An analytically significant ratio between timevarying magnitudes of signals is periodically monitored in recurring cycles which are each synchronized with a frequency generator. During every monitoring cycle, each signal relating to the numerator and denominator of the ratio, is integrated separately for a fixed number of generator cycles. Thereafter in each monitoring cycle, the output from the integrator of the denominator signal is applied at the input to the integrator of the numerator signal and the time taken by the latter to integrate back to its starting level is measured in proportion to the ratio of the signals. Either digital or analog time measurements may be utilized and the number of generator cycles over which the ratio is determined may include transition periods between each stage of integration.

    Abstract translation: 在循环周期中周期性地监视信号的时间变化幅度之间的分析显着的比率，每个循环周期都与频率发生器同步。 在每个监测周期中，每个有关比值的分子和分母的信号分别集成在固定数量的发生器周期内。 此后，在每个监测周期中，分母信号的积分器的输出在分子信号的积分器的输入处被施加，并且后者将其分离回到其起始电平所花费的时间与第 信号。 可以使用数字或模拟时间测量，并且确定该比率的发生器周期的数量可以包括在每个集成阶段之间的转换周期。

    Method and device for the detection of fission products
    94.
    发明授权
    Method and device for the detection of fission products 失效
    用于检测产品的方法和装置

    公开(公告)号：US3784823A

    公开(公告)日：1974-01-08

    申请号：US3784823D

    申请日：1972-01-19

    Applicant: COMMISSARIAT ENERGIE ATOMIQUE

    Inventor： KOSTIC S ,  LE MEUR R

    IPC: G21C17/04 ,  G21C17/07 ,  G01J1/18

    CPC classification number: G21C17/07 ,  G21C17/04 ,  G21C17/044 ,  G21C17/045

    Abstract: The method consists in carrying out the electrical collection of fission products on both sides of very thin metallized discs of polyester insulating material which are placed at the center of a spherical chamber and in measuring the radioactivity with a set of two electron detectors mounted to detect activity of the discs in all directions. The device for carrying out the method comprises a magazine constituted by a rotary circular ring provided with spaced openings each intended to accommodate a disc, a spherical ioncollection chamber, two parallel semiconductor detectors and a unit for conveying each disc from the magazine into an opening formed in a transfer plate. The disc is transferred by the plate to an ion-collection chamber, then passed between the two detectors in order to measure the activity and energy spectrum of the beta radiation of the collected ions then returned to the magazine.

    Abstract translation: 该方法包括在聚酯绝缘材料的非常薄的金属化圆盘的两侧进行裂变产物的电收集，所述金属化圆盘放置在球形室的中心，并且用一组两个电子检测器来测量放射性以安装以检测活动 的光盘在各个方向。

    Method and apparatus for measuring radiation absorption in a fluid specimen
    95.
    发明授权
    Method and apparatus for measuring radiation absorption in a fluid specimen 失效
    用于测量流体样品中辐射吸收的方法和装置

    公开(公告)号：US3678269A

    公开(公告)日：1972-07-18

    申请号：US3678269D

    申请日：1970-11-23

    Applicant: METROPHYSICS INC

    Inventor： MALEK FRITZ J

    IPC: G01J1/18 ,  G01N21/34

    CPC classification number: G01J1/18

    Abstract: Method and apparatus for measuring the radiation absorption of a fluid specimen and more particularly wherein an electrical signal proportional to the radiant energy received through the fluid specimen is stored and compared with an electrical signal derived from a known reference source, the difference between the signals producing an output signal that is a measure of radiant energy absorbed by the fluid specimen. A pair of capacitors store the electrical signals for comparison and are connected alternately and intermittently to a radiation sensing means by a first pair of gates. A second pair of gates alternately and intermittently energize a pair of radiant energy sources, one source being used as a reference and the other source emitting radiant energy that is transmitted through a specimen fluid undergoing measurement. Both pairs of gates are operated synchronously by a gating circuit that is controlled by a clock and a flip-flop circuit.

    Abstract translation: 更具体地说，用于测量流体样本的辐射吸收的方法和装置，更具体地，其中与通过流体样本接收的辐射能成比例的电信号被存储并且与从已知参考源导出的电信号进行比较，产生 输出信号，其是由流体样本吸收的辐射能的量度。 一对电容器存储用于比较的电信号，并且通过第一对门交替地和间歇地连接到辐射感测装置。 第二对门交替地并且间歇地激励一对辐射能源，一个源用作参考，另一个源发射通过正在进行测量的样本流体传输的辐射能。 两对门由一个由时钟和触发器电路控制的选通电路同步工作。

Patent Agency Ranking