公开(公告)号：US20180024097A1

公开(公告)日：2018-01-25

申请号：US15549855

申请日：2016-01-27

Applicant: Endress+Hauser GmbH+Co. KG

Inventor： Sascha D'ANGELICO ,  Christoph SCHMITT

IPC: G01N29/02 ,  G01N11/16 ,  G01F23/296 ,  G01N9/00

CPC classification number: G01N29/022 ,  G01F1/8436 ,  G01F23/2967 ,  G01N9/002 ,  G01N11/16 ,  G01N29/024 ,  G01N2009/006 ,  G01N2291/012 ,  G01N2291/02818 ,  G01N2291/0427

Abstract: An apparatus for determining and/or monitoring at least a first process variable of a medium and method for operating the apparatus at least with an electronics unit and a sensor unit, wherein the electronics unit is embodied to supply the sensor unit with an excitation signal, which is composed of an excitation carrier signal with an excitation carrier frequency and an excitation modulation signal with an excitation modulation frequency, and to receive from the sensor unit a received signal, which is composed of a received carrier signal and a received modulation signal, and wherein the electronics unit is embodied to determine from the phase shift between the excitation modulation signal and the received modulation signal at least the first process variable.

公开(公告)号：US20180003605A1

公开(公告)日：2018-01-04

申请号：US15433476

申请日：2017-02-15

Applicant: SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jungchul LEE ,  Donghyuk LEE ,  Sangken KAUH ,  Joonhui KIM ,  Nam-Joon CHO

IPC: G01N9/00

CPC classification number: G01N9/002 ,  B01L3/5027 ,  B01L3/502707 ,  B01L2200/0647 ,  B01L2300/0838 ,  B01L2400/0421 ,  B01L2400/0439 ,  G01N15/1056 ,  G01N2009/006

Abstract: It is an object of the present invention to provide a measuring apparatus having a reduced size by a substitution of an optical measuring device. A measuring apparatus for measuring micro-fluid or floating particles therein according to an embodiment of the present invention includes: a micro-tube containing the micro-fluid; an actuator vibrating the micro-tube; and a tuning fork converting vibration of the micro-tube into an electrical signal.

公开(公告)号：US20170343459A1

公开(公告)日：2017-11-30

申请号：US15535088

申请日：2015-11-09

Applicant: Endress + Hauser GmbH + Co. KG

Inventor： Tobias Brengartner ,  Sascha D'Angelico

IPC: G01N11/16 ,  G01H11/06 ,  G01F23/00 ,  G01N9/00 ,  G01F1/20

CPC classification number: G01N11/16 ,  G01F1/20 ,  G01F23/0069 ,  G01F23/2967 ,  G01H11/06 ,  G01N9/002 ,  G01N29/022 ,  G01N29/036 ,  G01N2009/006 ,  G01N2291/012 ,  G01N2291/02818 ,  G01N2291/02836 ,  G01N2291/0427

Abstract: A vibronic sensor for determining and/or monitoring at least one process variable of a medium in a container. The sensor at least comprising: a unit which can oscillate mechanically; a driving/receiving unit; and an electronic unit. The driving/receiving unit is designed to excite, by means of an electrical excitation signal, mechanical oscillations in the unit which can oscillate mechanically and is designed to receive the mechanical oscillations of the unit which can oscillate mechanically, and to convert them into an electrical receiving signal. The electronic unit is designed to generate the excitation signal on the basis of the receiving signal and to determine the at least one process variable from the receiving signal; The electronic unit comprises at least one adaptive filter; and the electronic unit is designed to set the filter characteristic of the adaptive filter in such a way that there is a target phase shift between the excitation signal and the receiving signal.

公开(公告)号：US20170343457A1

公开(公告)日：2017-11-30

申请号：US15535459

申请日：2015-11-18

Applicant: Endress + Hauser Flowtec AG

Inventor： Christof Huber ,  Ton Leenhoven

IPC: G01N9/00 ,  G01N9/32 ,  G01N11/04 ,  G01N11/08

CPC classification number: G01N9/002 ,  G01N9/32 ,  G01N11/04 ,  G01N11/08 ,  G01N2009/006

Abstract: A measuring arrangement (1) for measuring the density of flowable media comprises: a fluid path (16) for conveying a medium; a pump (14), which is arranged in the fluid path (16), for driving a defined volume flow of the medium in the fluid path (16); a pressure difference measuring arrangement (30a, 30b) for registering a pressure drop due to the volume flow of the medium between a first pressure tap (32a) and a second pressure tap (32b) in the fluid path (16); a densimeter (20) comprising at least one oscillator, which has at least one oscillatable measuring tube (22) for conveying the medium, at least one exciter mechanism for exciting oscillations of the measuring tube, and at least one sensor arrangement for registering at least one oscillatory characteristic of the oscillator, wherein the measuring tube or the measuring tubes of the at least one oscillator are/is arranged in the fluid path; an evaluation apparatus (40), which is adapted to ascertain the density of the medium based on the volume flow, the volume flow dependent pressure drop and the at least one oscillatory characteristic of the oscillator.

公开(公告)号：US09784657B2

公开(公告)日：2017-10-10

申请号：US14525508

申请日：2014-10-28

Applicant: Integrated Sensing Systems, Inc.

Inventor： Michael William Putty ,  Richard Thayre Smith ,  Nader Najafi

IPC: G01N9/00 ,  G01N11/04 ,  G01N9/32 ,  G01F1/84

CPC classification number: G01N11/04 ,  G01F1/8445 ,  G01F1/8472 ,  G01N9/002 ,  G01N9/32 ,  G01N2009/006

Abstract: In some embodiments, an apparatus includes a base structure and a tube. The tube has a first tube portion, a second tube portion substantially parallel to the first tube portion, an inlet portion, and an outlet portion. The tube is configured to have a material pass from the inlet portion to the outlet portion. The apparatus further includes a drive element in contact with the tube. The drive element is configured to vibrate the tube such that the first tube portion conducts vibrational movements out of phase with vibrational movements of the second tube portion. The apparatus also includes a sensing element, at least a portion of which is in contact with the tube. The sensing element is configured to sense deflections of the first tube portion and the second tube portion such that at least one property of the material is determined.

公开(公告)号：US20170234835A1

公开(公告)日：2017-08-17

申请号：US15587284

申请日：2017-05-04

Applicant: Applied Invention, LLC

Inventor： W. Daniel Hillis

IPC: G01N29/02 ,  G01N29/30 ,  G01N21/84 ,  G01N9/00

CPC classification number: G01N21/84 ,  G01N5/02 ,  G01N9/002 ,  G01N29/022 ,  G01N29/30 ,  G01N2015/0065 ,  G01N2015/1087 ,  G01N2291/0256 ,  G01N2291/0427 ,  G01Q10/045 ,  G02B6/3656 ,  G16C99/00

Abstract: The present disclosure provides methods and mechanisms for measuring small masses attached to a substrate within a microcantilever. Specifically, the disclosure describes the measurement of small particles accumulated at a substrate that cannot be flowed through a microchannel within a microcantilever. A resonance measurement is acquired at a first time. A pair resonance measurements is then acquired at a second point in time—one with the test mass at a first position off or along the microcantilever, the second with the test mass at a second position along the microcantilever. Comparing the resonance frequencies determined for the two test mass positions allows for disambiguation of changes in the mass of the particles from changes in the resonant behavior of the microcantilever itself.

公开(公告)号：US20170117905A1

公开(公告)日：2017-04-27

申请号：US14924531

申请日：2015-10-27

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Nathan Cermak ,  Selim Olcum ,  Steven Charles Wasserman ,  Scott R. Manalis

IPC: H03L7/08 ,  G01H13/00

CPC classification number: G01H13/00 ,  G01N5/02 ,  G01N9/002 ,  G01N2009/004 ,  G01N2009/006 ,  H03L7/00 ,  H03L7/0805

Abstract: Systems and Methods for controlling one or more mechanical resonators and determining information from resonant shift of the reonator(s) behavior, including at least one mechanical resonator, an excitation element for driving the resonator(s), a sensor for monitoring the motion of the resonator(s), at least one phase locked loop (PLL) in feedback between the excitation and monitoring elements, wherein each PLL is configured to operate at or near a different resonant mode of the resonator(s), and a processor for determining information from PLL internal signals indicative of a resonator frequency shift.

公开(公告)号：US09568410B2

公开(公告)日：2017-02-14

申请号：US13637256

申请日：2010-03-29

Applicant: Li Gao ,  Michael T. Pelletier ,  Bob Engelman

Inventor： Li Gao ,  Michael T. Pelletier ,  Bob Engelman

IPC: G01N11/16 ,  E21B49/08 ,  G01N9/00

CPC classification number: G01N11/16 ,  E21B2049/085 ,  G01N9/002

Abstract: Various embodiments include apparatus and methods of determining the viscosity of a fluid downhole in a well. A parameter of a response signal, obtained from driving a tube containing a fluid with an excitation signal for vibrating the tube, can be collected while maintaining the tube in a vibrating mode. The parameter can be evaluated to measure the viscosity of the fluid. In various embodiments, the fluid viscosity may be measured in-situ downhole in the well.

Abstract translation: 各种实施方案包括确定井中井下液体的粘度的装置和方法。 可以在将管保持在振动模式的同时收集响应信号的参数，该响应信号由驱动含有用于振动管的激励信号的流体的管获得。 可以评估该参数以测量流体的粘度。 在各种实施例中，流体粘度可以在井中原位测量。

公开(公告)号：US09557257B2

公开(公告)日：2017-01-31

申请号：US14425565

申请日：2012-09-26

Applicant: Micro Motion, Inc.

Inventor： Megan Casey ,  Anthony William Pankratz

IPC: G01N9/00 ,  G01N9/36 ,  G01N19/00 ,  G01N33/00

CPC classification number: G01N9/36 ,  G01N9/002 ,  G01N19/00 ,  G01N33/0004 ,  G01N2009/006

Abstract: A vibrating member (500) for a vibrating densitometer (800) is provided. The vibrating member (500) includes an inner surface (531) with one or more arcuate portions (730). The inner surface (531) of the vibrating member (500) also includes one or more raised portions (530) sized and located to increase a frequency separation between a resonant frequency of a desired vibrational drive mode and a resonant frequency of one or more undesired vibrational modes.

Abstract translation: 提供了一种用于振动密度计（800）的振动部件（500）。 振动构件（500）包括具有一个或多个弓形部分（730）的内​​表面（531）。 振动构件（500）的内表面（531）还包括一个或多个凸起部分（530），其尺寸和位置被设置成增加期望的振动驱动模式的谐振频率与一个或多个不期望的振荡驱动模式的谐振频率之间的频率间隔 振动模式。

公开(公告)号：US20170022052A1

公开(公告)日：2017-01-26

申请号：US15125070

申请日：2014-10-13

Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY

Inventor： Jung Chul LEE ,  Joo Hyun KIM

IPC: B81C1/00 ,  G01N29/02 ,  G01N29/036 ,  G01N5/00

CPC classification number: B81C1/00071 ,  B81B2201/0271 ,  B81B2201/058 ,  B81C1/0015 ,  G01N5/00 ,  G01N9/002 ,  G01N29/022 ,  G01N29/036 ,  G01N2291/0256 ,  H01L31/0352

Abstract: Provided is a method for manufacturing a microchannel resonator capable of measuring a mass and characteristics of an object using a principle in which a resonance frequency is changed according to a mass of a moving material, the method including: providing a silicon substrate; forming a cavity channel inside the silicon substrate; forming a hollow silicon oxide structure on the inner wall surface of the cavity channel by oxidizing the inner wall surface of the cavity channel; and partially removing the periphery of the hollow silicon oxide structure such that the hollow silicon oxide structure can resonate with respect to the silicon substrate.

Abstract translation: 提供一种用于制造能够使用根据移动材料的质量改变共振频率的原理来测量物体的质量和特性的微通道谐振器的方法，所述方法包括：提供硅衬底; 在硅衬底内形成空腔通道; 通过氧化空腔通道的内壁表面在空腔通道的内壁表面上形成中空氧化硅结构; 并且部分地去除中空氧化硅结构的周边，使得中空氧化硅结构可以相对于硅衬底共振。