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    Coil impendance detection method and object detection method and apparatus using the same
    93.
    发明授权
    Coil impendance detection method and object detection method and apparatus using the same 有权
    线圈阻抗检测方法和物体检测方法及其使用方法

    公开(公告)号：US06922065B2

    公开(公告)日：2005-07-26

    申请号：US10467633

    申请日：2002-05-02

    Applicant: Hiroshi Kawakatsu

    Inventor： Hiroshi Kawakatsu

    IPC: G01V3/10 ,  G01R27/02 ,  G01H1/00

    CPC classification number: G01V3/101 ,  G01F23/0076 ,  G01F23/0092 ,  G01F23/2967 ,  G01H11/00 ,  G01N11/16

    Abstract: A triangular wave generating circuit (21) generates a sweep voltage of a triangular wave, a VCO (22) generates a sweep of a frequency according to the sweep voltage, and a driving coil (4) is driven by the sweep voltage. From the current flowing through the driving coil (4), an interference component is extracted and rectified by a rectifier circuit (27). A peak hold circuit (28) holds a peak value of an interference voltage within a period corresponding to one sweep. The peak value thus held is compared by a comparator circuit (29) with a predetermined value and accordingly, a relay circuit (30) outputs a signal indicative of whether an object is present or not.

    Abstract translation: 三角波发生电路（21）产生三角波的扫描电压，VCO（22）根据扫描电压产生频率扫描，驱动线圈（4）由扫描电压驱动。 从流过驱动线圈（4）的电流，通过整流电路（27）提取并整流干扰成分。 峰值保持电路（28）将干扰电压的峰值保持在对应于一个扫描的周期内。 这样保持的峰值由具有预定值的比较器电路（29）进行比较，因此继电器电路（30）输出指示对象是否存在的信号。

    Measurement, compensation and control of equivalent shear rate in acoustic wave sensors
    94.
    发明申请
    Measurement, compensation and control of equivalent shear rate in acoustic wave sensors 失效
    声波传感器等效剪切速率的测量，补偿和控制

    公开(公告)号：US20050132784A1

    公开(公告)日：2005-06-23

    申请号：US10743986

    申请日：2003-12-22

    Applicant: Jeffrey Andle

    Inventor： Jeffrey Andle

    IPC: G01N11/16 ,  G01N29/02 ,  G01N29/22

    CPC classification number: G01N29/022 ,  G01N11/16 ,  G01N29/222 ,  G01N2291/0256 ,  G01N2291/02818 ,  G01N2291/02827 ,  G01N2291/0421 ,  G01N2291/0422

    Abstract: A method for measuring viscosity and shear rate at which the measurement is performed is provided, by utilizing an acoustic wave sensor, and calculating the shear rate as a function of the characteristic rate of quartz movement in response to a given power transmitted to a fluid, and the viscosity of the fluid. Related aspects of the invention provide for methods for controlling the shear rate at which a viscosity measurement is performed, and characterizing viscoelastic fluids at a plurality of shear rates.

    Abstract translation: 通过利用声波传感器提供测量进行测量的粘度和剪切速率的方法，并且响应于传递给流体的给定功率，计算作为石英运动的特征速率的函数的剪切速率， 和流体的粘度。 本发明的相关方面提供了用于控制进行粘度测量的剪切速率并表征多个剪切速率下的粘弹性流体的方法。

    Method for studying liquid and device for carrying out said method
    97.
    发明申请
    Method for studying liquid and device for carrying out said method 失效
    用于研究液体的方法和用于执行所述方法的装置

    公开(公告)号：US20040216515A1

    公开(公告)日：2004-11-04

    申请号：US10466845

    申请日：2003-07-21

    Inventor： Tatjana Anatoljevna Yakhno ,  Vladimir Grigorievich Yakhno ,  Ivan Ivanovich Shmeljov ,  Anatoly Gennadievich Sanin ,  Evgeny Valerievich Krotov ,  Yuri Yakovievich Brodsky

    IPC: G01N029/02

    CPC classification number: G01N29/4436 ,  G01N11/16 ,  G01N29/022 ,  G01N2035/1046 ,  G01N2291/014 ,  G01N2291/015 ,  G01N2291/018 ,  G01N2291/022 ,  G01N2291/024 ,  G01N2291/02466 ,  G01N2291/0251 ,  G01N2291/0258 ,  G01N2291/0422 ,  G01N2291/0423 ,  G01N2291/0427 ,  G01N2291/048 ,  G01N2291/101

    Abstract: The present invention relates to physical chemistry and can be used for a quality test of liquids, in particular, multi-component liquid products, to ascertain the conformity of various process liquids, pharmaceutical preparations, foodstuffs, biological liquids to standard in pharmacology, food processing and chemical industries, and in medical diagnostics. The method of invention enables determining of the mechanical impedance within a drop (1) of test liquid having a specified volume, in the preferred embodiment, 5 mcl, placed on the surface of a piezoelectric resonator (3) of ultrasound frequencies, which provides for excitation of shear modes within drop (1) while it is drying up. The obtained time dependence of the mechanical impedance of drop (1) is used as the information parameter. This information parameter is rather sensitive to the state of the liquid-crystalline structure of multi-component liquids, therefore, comparing the obtained time dependence with the same data for the etalon specimen allows one to assess the composition of a multi-component liquid, test the quality of liquid products, for example, foodstuffs, assess the prospective effectiveness of medical treatment with various medical preparations through analysis of a biological liquid, etc. In the apparatus of invention, the mechanical impedance of test liquid is determined from the disbalance voltage of a bridge circuit (9) comprising a piezoelectric resonator of ultrasound frequencies (3), in preferred embodiments, from the amplitude and/or phase of the disbalance voltage, which ensures high accuracy of measurements.

    Abstract translation: 本发明涉及物理化学，并且可以用于液体，特别是多组分液体产品的质量测试，以确定各种工艺液体，药物制剂，食品，生物液体与药理学标准，食品加工 化学工业和医疗诊断。 本发明的方法使得能够确定放置在超声频率的压电谐振器（3）的表面上的具有指定体积的测试液体的液滴（1）中的机械阻抗，该特定体积在优选实施例中为5mcl，其提供 在干燥期间在液滴（1）内激发剪切模式。 所获得的液滴（1）的机械阻抗的时间依赖性被用作信息参数。 该信息参数对多组分液体的液晶结构的状态相当敏感，因此，将获得的时间依赖性与标准具样品的相同数据进行比较允许评估多组分液体的组成，测试 液体产品的质量，例如食品，通过分析生物液体等来评估各种药物制剂的医疗前景效果。在本发明的装置中，测试液体的机械阻抗由不平衡电压 在优选实施例中，包括超声波频率（3）的压电谐振器的桥接电路（9），来自所述不平衡电压的幅度和/或相位，这确保了测量的高精度。

    Viscometer
    98.
    发明申请
    Viscometer 有权
    粘度计

    公开(公告)号：US20040200268A1

    公开(公告)日：2004-10-14

    申请号：US10835471

    申请日：2004-04-30

    Applicant: ENDRESS + HAUSER FLOWTEC AG

    Inventor： Wolfgang Drahm ,  Alfred Rieder

    IPC: G01N011/00

    CPC classification number: G01N11/16 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8468 ,  G01F1/849 ,  G01N9/002 ,  G01N11/162 ,  G01N11/167 ,  G01N2009/006

    Abstract: The viscometer provides a viscosity value (Xnull) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube (13) for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly (16), the flow tube (13) is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics (50) which feed an excitation current (iexc) into the excitation assembly (16). By means of the meter electronics (50), a first internal intermediate value (X1) is formed, which corresponds with the excitation current (iexc) and thus represents the friction forces acting in the fluid. According to the invention, a second internal intermediate value (X2), representing inhomogeneities in the fluid, is generated in the meter electronics (50), which then determine the viscosity value (Xnull) using the two intermediate values (X1, X2). The first internal intermediate value (X1) is preferably normalized by means of an amplitude control signal (yAM) for the excitation current (iexc), the amplitude control signal corresponding with the vibrations of the flow tube (13). As a result, the viscosity value (Xnull) provided by the viscometer is highly accurate and robust, particularly independently of the position of installation of the flow tube (13).

    Abstract translation: 粘度计提供粘度值（Xeta），其表示在与其连接的管道中流动的流体的粘度。 它包括具有至少一个用于传导流体的至少一个流管（13）的振动传感器，其与管道连通。 由激励组件（16）驱动，流动管（13）被振动，从而在流体中产生摩擦力。 粘度计进一步包括将激励电流（iexc）馈送到激励组件（16）中的仪表电子器件（50）。 通过仪表电子设备（50），形成与激励电流（iexc）对应的第一内部中间值（X1），因此表示作用在流体中的摩擦力。 根据本发明，在仪表电子设备（50）中产生表示流体中不均匀性的第二内部中间值（X2），其然后使用两个中间值（X1，X2）确定粘度值（Xeta）。 第一内部中间值（X1）优选地通过用于激励电流（iexc）的幅度控制信号（yAM）归一化，该振幅控制信号对应于流管（13）的振动。 结果，由粘度计提供的粘度值（Xeta）高度精确和鲁棒，特别是独立于流动管（13）的安装位置。

    Sensor for measuring the viscosity of a liquid
    99.
    发明授权
    Sensor for measuring the viscosity of a liquid 失效
    用于测量液体粘度的传感器

    公开(公告)号：US06755073B2

    公开(公告)日：2004-06-29

    申请号：US10332830

    申请日：2003-06-16

    Applicant: Bernhard Jakoby ,  Matthias Buskies

    Inventor： Bernhard Jakoby ,  Matthias Buskies

    IPC: G01N1116

    CPC classification number: G01N11/16

    Abstract: A sensor for measuring the viscosity of a fluid, which has an oscillator. The oscillator is dipped into the fluid. The surface of the oscillator is provided with a dirt-repellent coating.

    Abstract translation: 用于测量具有振荡器的流体粘度的传感器。 振荡器浸入流体中。 振荡器的表面设有防污涂层。

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