公开(公告)号：US20070204679A1

公开(公告)日：2007-09-06

申请号：US11748155

申请日：2007-05-14

Applicant: Eric Fitch ,  Stuart Wenzel

Inventor： Eric Fitch ,  Stuart Wenzel

IPC: G01N11/00 ,  G01N9/00 ,  G01N29/036

CPC classification number: G01N11/16 ,  G01N9/002

Abstract: A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteristic associated with the second state, and determining the property of the fluid by comparing the characteristic with a function that associates a plurality of properties with a corresponding plurality of characteristics. The characteristic can include a maximum phase slope, a phase slope associated with a resonant frequency, a maximum magnitude associated with the resonant frequency, the value of the resonant frequency, or any combination thereof.

Abstract translation: 一种用于确定流体性质的方法和系统包括将流体与处于第一状态的驻波相互作用以在第二状态下建立驻波，分析与驻波相关联的电信号以确定与第二状态相关的特性 并且通过将特征与将多个属性与相应的多个特征相关联的函数进行比较来确定流体的属性。 该特性可以包括最大相位斜率，与谐振频率相关联的相位斜率，与谐振频率相关联的最大幅度，谐振频率的值或其任何组合。

公开(公告)号：US07263874B2

公开(公告)日：2007-09-04

申请号：US11148156

申请日：2005-06-08

Applicant: Eric Fitch ,  Stuart Wenzel

Inventor： Eric Fitch ,  Stuart Wenzel

IPC: G01N11/10

CPC classification number: G01N11/16 ,  G01N9/002

Abstract: A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteristic associated with the second state, and determining the property of the fluid by comparing the characteristic with a function that associates a plurality of properties with a corresponding plurality of characteristics. The characteristic can include a maximum phase slope, a phase slope associated with a resonant frequency, a maximum magnitude associated with the resonant frequency, the value of the resonant frequency, or any combination thereof.

Abstract translation: 一种用于确定流体性质的方法和系统包括将流体与处于第一状态的驻波相互作用以在第二状态下建立驻波，分析与驻波相关联的电信号以确定与第二状态相关的特性 并且通过将特征与将多个属性与相应的多个特征相关联的函数进行比较来确定流体的属性。 该特性可以包括最大相位斜率，与谐振频率相关联的相位斜率，与谐振频率相关联的最大幅度，谐振频率的值或其任何组合。

公开(公告)号：US20070137313A1

公开(公告)日：2007-06-21

申请号：US11589836

申请日：2006-10-31

Applicant: Alfred Rieder ,  Wolfgang Drahm ,  Michael Fuchs ,  Hans-Jorg Sprich ,  Ibho Itin ,  Samuel Wyss

Inventor： Alfred Rieder ,  Wolfgang Drahm ,  Michael Fuchs ,  Hans-Jorg Sprich ,  Ibho Itin ,  Samuel Wyss

IPC: G01F1/84

CPC classification number: G01F15/024 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849 ,  G01N11/16 ,  G01N2009/006

Abstract: An inline measuring device includes a vibration-type measurement pickup having at least one measuring tube, which has a medium to be measured flowing through it during operation. The measuring tube is made by means of an exciter arrangement to execute, at least at times and/or at least in part, lateral oscillations and, at least at times and/or at least in part, torsional oscillations about an imaginary measuring tube longitudinal axis. The torsional oscillations alternate with the lateral oscillations or are, at times, superimposed thereon. Also included is a sensor arrangement for producing oscillation measurement signals correspondingly representing oscillations of the measuring tube. Measuring device electronics controlling the exciter arrangement generates, by means of at least one of the oscillation measurement signals and/or by means of the exciter current, at least at times, at least one measured value, which represents the at least one physical quantity to be measured. Additionally, the measuring device electronics also determines a first intermediate value, which corresponds to the lateral current component of the exciter current serving to maintain the lateral oscillations of the measuring tube and/or to a damping of the lateral oscillations of the measuring tube, as well as a second intermediate value, which corresponds to a torsional current component of the exciter current serving to maintain the torsional oscillations of the measuring tube and/or to a damping of the torsional oscillations of the measuring tube. With the goal of producing the measured value at high accuracy, such value is determined also taking into consideration these two intermediate values. The measured value obtained in this way is distinguished especially by high accuracy also in the case of media of two, or more, phases.

公开(公告)号：US07194895B2

公开(公告)日：2007-03-27

申请号：US10523917

申请日：2003-08-08

Applicant: Ronald Garwood Grey ,  Geoffrey Mark Condick ,  Dean Svendsen

Inventor： Ronald Garwood Grey ,  Geoffrey Mark Condick ,  Dean Svendsen

IPC: G01N11/10

CPC classification number: G01N11/16 ,  G01N33/442 ,  G01N2011/0013

Abstract: A rheometer and method of making rheological measurements is disclosed, in which a sample is supported between plates and an alternating movement is applied by a driver, support rod and plate. Force and displacement measurements are taken and the property determined from those measurements. The vibrating signal which is applied is in the form of a frequency sweep signal having a monotonic group delay function. The top plate is provided with a surface which causes a meniscus to form up a side edge of the plate to reduce the spring nature of the sample when the movement is supplied to the sample, and a supporting rod which supports the top plate is preferably formed from a material having a low coefficient of thermal expansion so that the gap between the plates is maintained substantially constant if the sample is heated to take measurements at different temperatures.

Abstract translation: 公开了流变仪和制造流变学测量的方法，其中样品被支撑在板之间，并且由驱动器，支撑杆和板施加交替的运动。 采取力和位移测量，并从这些测量中确定属性。 所施加的振动信号是具有单调组延迟功能的频率扫描信号的形式。 顶板设置有表面，当表面向样品供给运动时，弯液面形成板的侧边缘以减小样品的弹性，并且优选地形成支撑顶板的支撑杆 从具有低热膨胀系数的材料，使得如果样品被加热以在不同温度下进行测量，则板之间的间隙保持基本上恒定。

公开(公告)号：US20060131994A1

公开(公告)日：2006-06-22

申请号：US10524538

申请日：2003-07-18

Applicant: Sascha D'Angelico ,  Alexander Mueller

Inventor： Sascha D'Angelico ,  Alexander Mueller

IPC: H01L41/08

CPC classification number: G01N9/002 ,  G01F23/2967 ,  G01N11/16

Abstract: A vibration detector for determining and/or monitoring a predetermined fill level in a container. The detector includes an oscillatable unit, a driver/receiver unit and an evaluation unit. The vibration detector can, additionally, be used as a viscosity sensor or as a density sensor. For providing a multivariable sensor, a microprocessor is provided in the oscillation circuit formed of oscillatable unit and feedback electronics. The microprocessor corrects the phase of the feedback electronics over a predetermined frequency bandwidth in such a way that the sum of the phases of the feedback electronics and the microprocessor follows a predetermined function f(v).

Abstract translation: 一种用于确定和/或监测容器中的预定填充水平的振动检测器。 检测器包括可振荡单元，驱动器/接收器单元和评估单元。 此外，振动检测器可用作粘度传感器或密度传感器。 为了提供多变量传感器，在由振荡单元和反馈电子器件组成的振荡电路中提供微处理器。 微处理器以预定的频率带宽校正反馈电子装置的相位，使得反馈电子装置和微处理器的相位之和遵循预定的函数f（v）。

公开(公告)号：US07036355B2

公开(公告)日：2006-05-02

申请号：US10835471

申请日：2004-04-30

Applicant: Wolfgang Drahm ,  Alfred Rieder

Inventor： Wolfgang Drahm ,  Alfred Rieder

IPC: G01N11/00

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 (Xη) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly, the flow tube is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics which feed an excitation current (iexc) into the excitation assembly. By means of the meter electronics, 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, which then determine the viscosity value (Xη) 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. As a result, the viscosity value (Xη) provided by the viscometer is highly accurate and robust, particularly independently of the position of installation of the flow tube.

Abstract translation: 粘度计提供粘度值（X'eta），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流管的振动换能器，其与管道连通。 由激励组件驱动，流管被振动，使得在流体中产生摩擦力。 粘度计进一步包括将激励电流（i _{exc）馈送到激励组件中的仪表电子装置。 通过仪表电子设备形成第一内部中间值（X 1> 1），其对应于激励电流（I SUB），因此表示作用的摩擦力 在流体中。 根据本发明，在仪表电子设备中产生表示流体中不均匀性的第二内部中间值（X 2 S 2 N），其然后确定粘度值（X'eta ），使用两个中间值（X 1，X 2，N 2）。 优选地，通过用于激励电流的振幅控制信号（y SUB AM）来对第一内部中间值（X SUB1）进行归一化（i> SUB ），该幅度控制信号对应于流管的振动。 结果，由粘度计提供的粘度值（X'ηη）高度精确和鲁棒，特别是独立于流动管的安装位置。}

公开(公告)号：US20060032295A1

公开(公告)日：2006-02-16

申请号：US11197780

申请日：2005-08-04

Applicant: Roger Hazelden ,  Kimberley Smith

Inventor： Roger Hazelden ,  Kimberley Smith

IPC: G01N11/00

CPC classification number: G01N29/348 ,  G01N11/16 ,  G01N29/036 ,  G01N29/2462 ,  G01N29/42 ,  G01N2291/0258 ,  G01N2291/02818 ,  G01N2291/0422 ,  G01N2291/0427

Abstract: An apparatus for measuring the viscosity and temperature of a fluid, for example an engine oil, comprises a transducer, which is arranged to vibrate when provided with a drive signal to produce an ultrasonic shear wave; an impedance matching layer that is inserted into the fluid and which couples at least a portion of the ultrasonic waves produced by the transducer into the fluid and from which at least a portion of the wave is reflected back to the transducer; a detector which is adapted to detect a measurement signal produced by the transducer when the reflected wave is incident upon the transducer; a control circuit which varies the frequency of the drive signal applied to the transducer and hence the frequency of the ultrasound signal; a processing means which determines the optimum frequency of the drive signal at which the measurement signal output from the transducer has its minimum amplitude; and a temperature determining means which estimates the temperature of the fluid as a function of the optimum frequency.

Abstract translation: 用于测量流体（例如发动机油）的粘度和温度的装置包括换能器，其被设置为当设置有驱动信号以产生超声剪切波时振动; 阻抗匹配层，其插入到所述流体中并且将由所述换能器产生的超声波的至少一部分耦合到所述流体中，并且所述至少一部分波被从所述流体反射回所述换能器; 检测器，其适于在所述反射波入射到所述换能器时检测由所述换能器产生的测量信号; 控制电路，其改变施加到换能器的驱动信号的频率，并因此改变超声信号的频率; 确定从换能器输出的测量信号具有其最小振幅的驱动信号的最佳频率的处理装置; 以及温度确定装置，其估计作为最佳频率的函数的流体的温度。

公开(公告)号：US20050247115A1

公开(公告)日：2005-11-10

申请号：US10523917

申请日：2003-08-08

Applicant: Ronald Grey ,  Geoffrey Condick ,  Dean Svendsen

Inventor： Ronald Grey ,  Geoffrey Condick ,  Dean Svendsen

IPC: G01N3/32 ,  G01N11/00 ,  G01N11/16 ,  G01N33/44 ,  G01N11/10

CPC classification number: G01N11/16 ,  G01N33/442 ,  G01N2011/0013

Abstract: A rheometer and method of making rheological measurements is disclosed, in which a sample is supported between plates and an alternating movement is applied by a driver, support rod and plate. Force and displacement measurements are taken and the property determined from those measurements. The vibrating signal which is applied is in the form of a frequency sweep signal having a monotonic group delay function. The top plate is provided with a surface which causes a meniscus to form up a side edge of the plate to reduce the spring nature of the sample when the movement is supplied to the sample, and a supporting rod which supports the top plate is preferably formed from a material having a low coefficient of thermal expansion so that the gap between the plates is maintained substantially constant if the sample is heated to take measurements at different temperatures.

Abstract translation: 公开了流变仪和制造流变学测量的方法，其中样品被支撑在板之间，并且由驱动器，支撑杆和板施加交替的运动。 采取力和位移测量，并从这些测量中确定属性。 所施加的振动信号是具有单调组延迟功能的频率扫描信号的形式。 顶板设置有表面，当表面向样品供给运动时，弯液面形成板的侧边缘以减小样品的弹性，并且优选地形成支撑顶板的支撑杆 从具有低热膨胀系数的材料，使得如果样品被加热以在不同温度下进行测量，则板之间的间隙保持基本上恒定。

公开(公告)号：US20050193805A1

公开(公告)日：2005-09-08

申请号：US11088436

申请日：2005-03-24

Applicant: Roger Williams ,  James Chiao ,  Humphrey Chow ,  Michael Forbush ,  Andrew Rose

Inventor： Roger Williams ,  James Chiao ,  Humphrey Chow ,  Michael Forbush ,  Andrew Rose

IPC: G01N11/10

CPC classification number: G01N13/02 ,  B41J2/14008 ,  G01N11/16

Abstract: The present invention comprises a noncontact method for measuring viscosity and/or surface tension information of a liquid in a liquid containment structure. The steps of the method include exciting a surface of the liquid with an excitation burst of acoustic energy that causes the surface to oscillate; generating a positional data set comprised of a plurality of positional measurements related to the detected position of the surface at a plurality of times after the surface is excited; generating a frequency domain data set from the positional data set, the amplitude spectrum of the frequency domain data set comprising information about the oscillation frequency of at least one vibrational mode of the of the surface as it oscillates; and processing the frequency domain data set and/or the positional data set to yield information about the surface tension and/or viscosity of the liquid. A Fast Fourier Transform technique may be used in generating the frequency domain data set.

Abstract translation: 本发明包括用于测量液体容纳结构中的液体的粘度和/或表面张力信息的非接触方法。 该方法的步骤包括以引起表面振荡的声能的激发脉冲激发液体的表面; 在所述表面被激发之后，多次生成与所述表面的检测位置有关的多个位置测量值的位置数据集; 从所述位置数据集生成频域数据集，所述频域数据集的振幅谱包括关于所述表面的至少一个振动模式的振荡频率在振荡时的振荡频率的信息; 并且处理频域数据集和/或位置数据集以产生关于液体的表面张力和/或粘度的信息。 快速傅立叶变换技术可用于产生频域数据集。

公开(公告)号：US20050166667A1

公开(公告)日：2005-08-04

申请号：US11090755

申请日：2005-03-25

Applicant: Damian Hajduk ,  Eric Carlson ,  Ravi Srinivasan

Inventor： Damian Hajduk ,  Eric Carlson ,  Ravi Srinivasan

IPC: G01N19/00 ,  G01L1/16 ,  G01L1/24 ,  G01N3/02 ,  G01N3/24 ,  G01N11/14 ,  G01N11/16

CPC classification number: G01N3/24 ,  G01N11/16 ,  G01N2203/0051 ,  G01N2203/0286 ,  G01N2203/0623

Abstract: The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element. Moreover, a rheometer is provided which comprises a force sensor based on stress-optic material.

Abstract translation: 本发明涉及微型流变仪，平行流变仪和改进的力传感器元件，其可有利地与微型流变仪和平行流变仪组合使用。 微型流变仪适用于确定以少量样品形式提供的材料的流变特性。 微型流变仪包括致动元件，感测元件和反馈电路，以提供由样品施加到感测元件的剪切力的重新平衡，这确保了确定剪切应变的特殊刚度，以便允许高精度的测量。 本发明的并行流变仪允许多个样本的同时测量，以便在短时间内允许多个样本。 根据本发明的力传感器元件允许同时测量施加到传感器元件的剪切力和法向力。 此外，提供了一种流变仪，其包括基于应力光学材料的力传感器。