公开(公告)号：US4770129A

公开(公告)日：1988-09-13

申请号：US45072

申请日：1987-05-01

Applicant: Shigeru Miyata ,  Yoshihiro Matsubara

Inventor： Shigeru Miyata ,  Yoshihiro Matsubara

IPC: G01N21/43 ,  F02B1/02 ,  F02B77/08 ,  F02D41/14 ,  G01J1/16 ,  G01J1/44 ,  G01N21/85 ,  G01N33/28 ,  F02B75/00

CPC classification number: F02B1/02 ,  F02B77/08 ,  F02D41/1451 ,  G01N21/85 ,  G01N33/2852 ,  F02F2007/0092 ,  G01J2001/1647 ,  G01J2001/444 ,  G01N2201/0621

Abstract: A sensor for mixing ratio of gasoline and alcohol comprising: a transparent column, both ends of which are supported by grips; the surface of the column is positioned in direct contact with a mixing liquid of gasoline and alcohol; a light emitting diode disposed so that light beams therefrom are incident on one end of said transparent column and the mixing liquid, said beams incident on said boundary at less than a critical angle being totally refracted, while said beams incident on said boundary at more than the critical angle being totally reflected to pass within said column so as to go out from the other end thereof, said critical angle depending upon a mixing degree of said liquid; a photo diode placed to receive the light beams reflected from the boundary so as to generate an output in accordance with the quantity of the light beams received; and the column being substantially determined its lengthwise and diametrical dimension such that the light beams incident upon the boundary at a critical angle, are allowed to totally reflect only once to enter the photo diode with the mixing ratio of alcohol and gasoline ranging from 100:0 to 0:100.

Abstract translation: 一种用于汽油和醇的混合比的传感器，包括：透明柱，其两端由夹具支撑; 柱的表面与汽油和酒精的混合液体直接接触; 发光二极管被设置成使得其光束入射在所述透明柱的一端和混合液体上，所述入射在所述边界上的所述光束以小于临界角度被全部折射，同时所述光束在所述边界上入射超过 所述临界角被全反射以在所述柱内通过以从其另一端出去，所述临界角取决于所述液体的混合程度; 放置以接收从边界反射的光束的光电二极管，以便根据所接收的光束的量产生输出; 并且柱基本上确定其长度和直径尺寸，使得以临界角入射到边界的光束仅允许完全反射一次以使酒精和汽油的混合比为100：0 至0：100。

公开(公告)号：US09377353B2

公开(公告)日：2016-06-28

申请号：US14318548

申请日：2014-06-27

Applicant: Intel Corporation

Inventor： Kyu Hyun Kim ,  David N. Hutchison

IPC: G01N21/47 ,  G01J1/16 ,  G01J1/08 ,  G01J1/02 ,  A61B5/00 ,  G01N21/552 ,  A61B5/11 ,  A61B5/16 ,  A61B5/1455

CPC classification number: G01J1/1626 ,  A61B5/0059 ,  A61B5/1118 ,  A61B5/14551 ,  A61B5/165 ,  A61B5/4266 ,  A61B5/7214 ,  G01J1/0204 ,  G01J1/0271 ,  G01J1/08 ,  G01J2001/0257 ,  G01J2001/1647 ,  G01N21/552

Abstract: Systems and methods may provide for receiving an electrical measurement signal from a first photodetector coupled to a first waveguide and determining a total intensity level of reflected light in the first waveguide based on the electrical measurement signal. Additionally, a perspiration level of skin in contact with the first waveguide may be determined based on the total intensity level of the reflected light in the first waveguide. In one example, an electrical control signal is received from a second photodetector coupled to a second waveguide that is physically isolated from the skin, wherein the total intensity level of the reflected light in the first waveguide is determined further based on the electrical control signal.

Abstract translation: 系统和方法可以提供用于从耦合到第一波导的第一光电检测器接收电测量信号，并且基于电测量信号确定第一波导中的反射光的总强度水平。 此外，可以基于第一波导中的反射光的总强度水平确定与第一波导接触的皮肤的出汗水平。 在一个示例中，从耦合到与皮肤物理隔离的第二波导的第二光电检测器接收电控信号，其中基于电控制信号进一步确定第一波导中的反射光的总强度水平。

公开(公告)号：US20150377697A1

公开(公告)日：2015-12-31

申请号：US14318548

申请日：2014-06-27

Applicant: KYU HYUN KIM ,  DAVID N. HUTCHISON

Inventor： KYU HYUN KIM ,  DAVID N. HUTCHISON

IPC: G01J1/16 ,  G01J1/02 ,  G01J1/08

CPC classification number: G01J1/1626 ,  A61B5/0059 ,  A61B5/1118 ,  A61B5/14551 ,  A61B5/165 ,  A61B5/4266 ,  A61B5/7214 ,  G01J1/0204 ,  G01J1/0271 ,  G01J1/08 ,  G01J2001/0257 ,  G01J2001/1647 ,  G01N21/552

Abstract: Systems and methods may provide for receiving an electrical measurement signal from a first photodetector coupled to a first waveguide and determining a total intensity level of reflected light in the first waveguide based on the electrical measurement signal. Additionally, a perspiration level of skin in contact with the first waveguide may be determined based on the total intensity level of the reflected light in the first waveguide. In one example, an electrical control signal is received from a second photodetector coupled to a second waveguide that is physically isolated from the skin, wherein the total intensity level of the reflected light in the first waveguide is determined further based on the electrical control signal.

Abstract translation: 系统和方法可以提供用于从耦合到第一波导的第一光电检测器接收电测量信号，并且基于电测量信号确定第一波导中的反射光的总强度水平。 此外，可以基于第一波导中的反射光的总强度水平确定与第一波导接触的皮肤的出汗水平。 在一个示例中，从耦合到与皮肤物理隔离的第二波导的第二光电检测器接收电控信号，其中基于电控制信号进一步确定第一波导中的反射光的总强度水平。

公开(公告)号：US5385539A

公开(公告)日：1995-01-31

申请号：US906926

申请日：1992-06-30

Applicant: David L. Maynard

Inventor： David L. Maynard

IPC: G01J1/16 ,  G01N15/05 ,  G01N21/51 ,  G01N33/487 ,  A61B5/00

CPC classification number: G01N21/51 ,  A61M2205/331 ,  A61M2205/3313 ,  G01J2001/1647 ,  G01N2015/055 ,  G01N2021/1738 ,  G01N2021/4709 ,  G01N2201/0621 ,  G01N2201/0662

Abstract: An apparatus and method are provided for measuring the hematocrit level of blood. The presently preferred embodiment comprises a light emitting device which emits an amount of light into a blood sample. This light travels through the blood sample to two light detecting devices positioned relative to the light emitting device in a predetermined geometry such that light emitted from the light emitting device must travel farther to reach one of the light detecting devices than to reach the other, thereby forming a light path from the light emitting device to one light detecting device which is longer than the path from the light emitting device to the other light detecting device. According to the present invention, the amount of light detected by one of the light detecting devices is regulated so that the amount of light detected is constant. Thereafter, the amount of light detected by the unregulated light detecting device is a linear representation of the hematocrit of the blood in the blood sample. The hematocrit sensor may be used within a plasma separator apparatus wherein the hematocrit measurement regulates the operating parameters of the autotransfusion system to maintain the hematocrit of the blood within a predetermined range.

Abstract translation: 提供了一种用于测量血液血细胞比容水平的装置和方法。 目前优选的实施方案包括将一定量的光发射到血液样品中的发光装置。 该光通过血液样本传播到相对于发光器件相对于预定几何形状定位的两个光检测装置，使得从发光装置发射的光必须更远地行进到达其中一个光检测装置而不是到达另一个，由此 形成从发光器件到比从从发光器件到另一光检测器件的路径长的光检测器件的光路。 根据本发明，调节由一个光检测装置检测的光量，使得检测到的光量是恒定的。 此后，由未调节的光检测装置检测的光量是血液样品中血液的血细胞比容的线性表示。 血细胞比容传感器可以在等离子体分离器装置中使用，其中血细胞比容测量调节自体输血系统的操作参数以将血液的血细胞比容维持在预定范围内。

公开(公告)号：US4824244A

公开(公告)日：1989-04-25

申请号：US054390

申请日：1987-05-26

Applicant: Shigeru Miyata ,  Yoshihiro Matsubara

Inventor： Shigeru Miyata ,  Yoshihiro Matsubara

IPC: G01N21/43 ,  F02B1/02 ,  F02B77/08 ,  F02D41/14 ,  G01J1/16 ,  G01J1/44 ,  G01N21/85 ,  G01N33/28 ,  F02D1/00 ,  F02B3/00 ,  G01N21/41

CPC classification number: F02B1/02 ,  F02B77/08 ,  F02D41/1451 ,  G01N21/85 ,  G01N33/2852 ,  F02F2007/0092 ,  G01J2001/1647 ,  G01J2001/444 ,  G01N2201/0621

Abstract: A sensor for mixing ratio of liquid fuel comprising: a cylindrical enclosure having both inlet and outlet opening to act as a passage through which a mixing liquid fuel flows; a transparent column concentrically disposed into the enclosure to make outer surface contact with the liquid fuel; light emitting diode and photo diode each provided so as to sandwich the column in the lengthwise direction, so that the light emitted from the former enters the column through its one end and reflects at the boundary of the column and the liquid fuel, and go out of the other end thereof to fall on the latter; a temperature compensation photo diode disposed in the enclosure with the light of the light emitting diode partly as a light source to rectify the characteristics influenced under the ambient temperature variation; a voltage control circuit provided to control the voltage across the light emitting diode so as to maintain uniform output from the temperature compensation photo diode.

Abstract translation: 一种用于液体燃料混合比的传感器，包括：具有入口和出口两者的圆柱形外壳，其作为混合液体燃料流过的通道; 同心地设置在外壳中以使外表面与液体燃料接触的透明柱; 发光二极管和光电二极管各自设置成沿长度方向夹住柱，使得从前者发射的光通过其一端进入柱体并在柱和液体燃料的边界处反射出去 的另一端落在后者上; 设置在外壳中的温度补偿光电二极管部分地作为光源发光，以校正在环境温度变化下影响的特性; 电压控制电路，用于控制发光二极管两端的电压，以保持来自温度补偿光电二极管的均匀输出。