公开(公告)号：US20030051557A1

公开(公告)日：2003-03-20

申请号：US10246479

申请日：2002-09-19

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Ikuhiko Ishikawa ,  Hironobu Oota

IPC: G01F001/58

CPC classification number: G01F1/60 ,  G01F1/588

Abstract: The present invention is intended to achieve measurement of electrode impedance that is not easily affected by fluid noise, and to accurately detect adhesion and discriminate the type of fluid. An electromagnetic flowmeter that is provided with a pipe through which the fluid to be measured is passed, applies a magnetic field to the above fluid driving the excitation coils using the excitation circuit, and thereby measures the flow rate of the fluid passing through the above-mentioned pipe; further comprising: a pair of detecting electrodes that detect the flow signal corresponding to the flow rate of the fluid passing through the above-described pipe, an earth electrode whose potential becomes the reference potential when the flow rate is measured, diagnosing signal generators that apply the diagnosing signals between the above detecting electrodes and the above earth electrode, and a diagnosis circuit to detect the resistance values between the above detecting electrodes and the above earth electrode as diagnostic signals.

Abstract translation: 本发明旨在实现不容易受流体噪声影响的电极阻抗的测量，并且准确地检测粘附和区分流体的类型。 一种电磁流量计，其具有通过所述被测量流体的管道，对使用所述励磁回路驱动所述励磁线圈的上述流体施加磁场，由此测量通过所述上述流体的流体的流量， 上述管道 进一步包括：一对检测电极，其检测与通过上述管道的流体的流量相对应的流量信号，当测量流量时其电位成为基准电位的接地电极，诊断应用的信号发生器 上述检测电极和上述接地电极之间的诊断信号，以及用于检测上述检测电极和上述接地电极之间的电阻值作为诊断信号的诊断电路。

公开(公告)号：US20040123670A1

公开(公告)日：2004-07-01

申请号：US10669565

申请日：2003-09-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hiroshi Nakatani ,  Tatsuya Kimura ,  Yoshito Sameda ,  Takuya Iijima ,  Takashi Higuchi ,  Makoto Futoo ,  Hiroaki Nojiri ,  Kiyonori Nishikawa ,  Toshihiko Okamoto

IPC: G01F001/58

CPC classification number: G01F1/584 ,  G01F1/586

Abstract: The invention consists in a capacitative electromagnetic flow meter in which excitation is performed at a frequency above the commercially available frequency and having a characteristic correction filter that corrects the gain frequency characteristic of the exciting current such that the exciting flux waveform has a flat section. In the detection unit, the value of the electrostatic capacitance between the face electrodes 4A, 4B and guard electrodes 5A, 5B is made smaller than the value of the electrostatic capacitance between the detecting face electrodes 4A, 4B and the fluid to be measured. The exciting coils are fixed to a cylindrical yoke, being electrostatically screened by coil fixing plates. Fixing by an earth ring is performed with this cylindrical yoke and the two ends of the measurement tube being symmetrical with respect to the tube axis and electrode axes. In addition, fixing is effected by filling the entire interior of the detection unit with epoxy resin.

公开(公告)号：US20030101826A1

公开(公告)日：2003-06-05

申请号：US09997901

申请日：2001-11-30

Inventor： William J. Neubert

IPC: G01F001/58

CPC classification number: A61M1/0001 ,  A61B3/00 ,  A61F9/007 ,  A61M1/0023 ,  A61M1/0029 ,  A61M1/0031 ,  A61M1/0058 ,  A61M2205/12 ,  A61M2205/123 ,  A61M2205/3379 ,  A61M2210/0612 ,  G01F1/58 ,  G01F1/588

Abstract: A collection reservoir 54 includes a rigid-walled cassette adapted for connection to aspiration tubing 50. The cassette also includes a pair of electrodes 36 positioned so that the electrodes are electrically connectable to a flow meter 34. In operation, the electrodes are exposed to the fluid and tissue being aspirated from the surgical site so that the flow meter indicates a flow rate of the fluid and tissue from the surgical site.

公开(公告)号：US20030005777A1

公开(公告)日：2003-01-09

申请号：US10157930

申请日：2002-05-31

Inventor： Thomas Budmiger

IPC: G01F001/58

CPC classification number: G01F1/588 ,  G01F1/60

Abstract: The flowmeter comprises a flow sensor with a flow tube, two coils, and two measuring electrodes as well as measuring and control electronics. The method serves to compensate interfering potentials that are caused by inductive and/or capacitive interference arising from the coil leads and/or by particles of foreign matter or air bubbles in the liquid to be measured and/or by coatings on the measuring electrodes. During first subcycles of the excitation current, a measurement signal proportional to volumetric flow rate is computed as usual. During second subcycles of the excitation current, at least one voltage pulse is applied to at least one of the measuring electrodes.

Abstract translation: 流量计包括具有流量管，两个线圈和两个测量电极以及测量和控制电子器件的流量传感器。 该方法用于补偿由线圈引线和/或由被测液体中的异物或气泡的颗粒和/或测量电极上的涂层引起的电感和/或电容干扰引起的干扰电位。 在激励电流的第一个次循环期间，像往常一样计算与体积流量成比例的测量信号。 在激励电流的第二次循环期间，至少一个电压脉冲施加到至少一个测量电极。

公开(公告)号：US20010002553A1

公开(公告)日：2001-06-07

申请号：US09728021

申请日：2000-12-01

Inventor： Arnould Leendert van Willigen

IPC: G01F001/58

CPC classification number: G01F1/586

Abstract: A magneto-inductive flowmeter for measuring the flow rate of fluids, incorporates a measuring tube, two magnetic poles externally contacting the measuring tube, and two interconnected return plates. Each magnetic pole includes a field coil and a supporting plate-metal pole shoe. Each pole shoe is connected in the area of the opening of the field coil supporting the associated pole shoe with a return plate and features in the area outside the opening of the field coil supporting the associated pole shoe, and connecting to the same, sections which butt against the measuring tube. For obtaining an easily manufacturable magneto-inductive flowmeter in which the field coils can be precisely and securely positioned and can be provided with a large number of windings, the pole shoes are placed in the area of the opening of the field coil supporting the associated pole shoe at a distance from the measuring tube in that, in the area of the opening of the field coil supporting the respective pole shoe, the pole shoes feature sections which protrude into the opening of the field coil and extend to the end of the opening, facing away from the measuring tube, of the field coil supporting the associated pole shoe.

Abstract translation: 用于测量流体流量的磁感应流量计包括测量管，外部与测量管接触的两个磁极和两个互连的回流板。 每个磁极包括一个励磁线圈和一个支撑板金属极靴。 每个极靴在励磁线圈的开口区域中连接，支撑相关的极靴的回路板的特征在于支撑相关的极靴的励磁线圈的开口外部的区域中，并且连接到相同的部分， 对着测量管。 为了获得易于制造的磁感应流量计，其中励磁线圈可以被精确和牢固地定位并且可以设置有大量的绕组，极靴被放置在支撑相关杆的励磁线圈的开口的区域中 在距离测量管一定距离的位置处，在支撑相应的极靴的励磁线圈的开口区域中，极靴特征部分突出到励磁线圈的开口中并延伸到开口的端部， 背离测量管，支撑相关的极靴的励磁线圈。

公开(公告)号：US20040255691A1

公开(公告)日：2004-12-23

申请号：US10490570

申请日：2004-03-19

Inventor： Tomoshige Yamamoto

IPC: G01F001/58

CPC classification number: G01F1/586 ,  G01F1/588

Abstract: When a plane (PLN) which includes electrodes (2a, 2b) and is perpendicular to the direction of an axis (PAX) of a measuring pipe (1) is defined as a boundary in the measuring pipe (1), an exciting coil (3) applies asymmetrical magnetic fields to a fluid to be measured, which flows through the measuring pipe (1), on both sides of the plane (PLN) serving as the boundary in the measuring pipe (1). A signal conversion unit (5) obtains the phase difference between an exciting current supplied to the exciting coil (3) and an interelectrode electromotive force detected by the electrodes (2a, 2b). A flow rate output unit (6) calculates the flow rate of the fluid on the basis of the phase difference obtained by the signal conversion unit (5).

Abstract translation: 当将包括电极（2a，2b）并且垂直于测量管（1）的轴线（PAX）的平面（PLN）定义为测量管（1）中的边界时，激励线圈 3）对作为测量管（1）中的边界的平面（PLN）的两侧的流过测量管（1）的被测量流体施加非对称磁场。 信号转换单元（5）获得提供给励磁线圈（3）的励磁电流与由电极（2a，2b）检测的电极间电动势之间的相位差。 流量输出单元（6）基于由信号转换单元（5）获得的相位差来计算流体的流量。

公开(公告)号：US20040149046A1

公开(公告)日：2004-08-05

申请号：US10631446

申请日：2003-07-30

Inventor： Yoshio Yamazaki

IPC: G01F001/58

CPC classification number: G01F1/588

Abstract: A measurement pipe for an electromagnetic flowmeter includes a cylindrical pipe main body, a pair of flanges, and a lining material. The cylindrical pipe main body has openings at its two ends. The pair of flanges are integrally formed with the pipe main body to project outside the openings. The lining material is made of a reinforcing-material-mixed synthetic resin to cover at least an inner surface of the pipe main body and side surfaces of the flanges.

公开(公告)号：US20040060366A1

公开(公告)日：2004-04-01

申请号：US10665084

申请日：2003-09-17

Inventor： Tomoshige Yamamoto

IPC: G01F001/58

CPC classification number: G01F1/588 ,  G01F1/60

Abstract: In an electromagnetic flowmeter, a fluid to be measured flows through a measuring pipe. An electrode in the measuring pipe detects an electromotive force generated by a magnetic field applied to the fluid and flow of the fluid. A first exciting coil applies a first magnetic field having a first frequency to the fluid. A second exciting coil applies, to the fluid, a second magnetic field obtained by amplitude-modulating a carrier having the first frequency by a modulated wave having a second frequency. A power supply section supplies an exciting current to the first and second exciting coils. A signal conversion section separates the component of the first frequency from the electromotive force to obtain an amplitude, separates one of the components of sum and difference frequencies of the first and second frequencies from the electromotive force to obtain an amplitude, and obtains an amplitude ratio. A flow rate output section calculates the flow rate of the fluid on the basis of the amplitude ratio.

公开(公告)号：US20030020463A1

公开(公告)日：2003-01-30

申请号：US09854071

申请日：2001-05-11

Applicant: Lord Corporation

Inventor： J. David Carlson ,  Gary W. Adams

IPC: G01N027/74 ,  G01R033/12 ,  G01F001/58 ,  G01F001/84

CPC classification number: G01N11/04 ,  G01N27/74

Abstract: A system and method for monitoring the composition of a magnetically permeable material, where the system comprises a first container containing a volume of magnetically permeable material; a flow path for flowing the magnetically permeable material out of the container; a sensor for determining the inductance of the magnetically permeable material; and a sensor for determining the density of the magnetically permeable material. The sensors for determining the density and inductance of the magnetically permeable material are flow connected to the flow path.

Abstract translation: 一种用于监测导磁材料的组成的系统和方法，其中所述系统包括容纳一定体积的导磁材料的第一容器; 用于使所述导磁材料流出所述容器的流动路径; 用于确定导磁材料的电感的传感器; 以及用于确定导磁材料的密度的传感器。 用于确定导磁材料的密度和电感的传感器流动连接到流动路径。

公开(公告)号：US20040000199A1

公开(公告)日：2004-01-01

申请号：US10458887

申请日：2003-06-11

Applicant: ZF Sachs AG

Inventor： Thomas Otto ,  Barbara Ester

IPC: G01F001/58

CPC classification number: F16D13/38 ,  F16D13/75 ,  G01L3/104 ,  G01M13/022

Abstract: Apparatus for detecting a parameter associated with the torque transmitted by a friction clutch, where the friction clutch has a clutch disk which is or can be connected for rotation in common to a power takeoff shaft. The apparatus includes a receiver area (58), which does not rotate with the clutch disk in the torque-transmitting state, and a code provided on the clutch disk. The which code can be scanned by the receiver area and thus generates a sensor signal associated with transmitted torque.

Abstract translation: 用于检测与由摩擦离合器传递的扭矩相关联的参数的装置，其中所述摩擦离合器具有离合器盘，所述离合器盘可以共同地连接到功率输出轴，或者可以被连接成用于与功率输出轴共同旋 该装置包括不在转矩传递状态下离合器盘旋转的接收器区域（58）和设置在离合器盘上的代码。 该代码可以被接收器区域扫描，并且因此产生与所传送的扭矩相关联的传感器信号。