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1. 发明授权

US11255714B2 Apparatus for determining and/or monitoring at least one process variable 有权
公开(公告)号：US11255714B2
公开(公告)日：2022-02-22
申请号：US15747192
申请日：2016-07-26
申请人： Endress + Hauser GmbH + Co. KG
发明人： Thomas Blodt , Tobias Brengartner , Benjamin Mack , Peter Klofer
IPC分类号： G01F23/296 , G01F23/284 , G01N9/00 , G01N11/16 , G01N27/02 , G01N33/03 , G01N33/28
摘要： An Apparatus for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit a driving/receiving unit for exciting the mechanically oscillatable unit to execute mechanical oscillations by means of an electrical, exciting signal and for receiving and transducing the mechanical oscillations into an electrical, received signal a control unit, which is embodied to produce the exciter signal starting from the received signal and to set a predeterminable phase shift between the exciter signal and the received signal, an electromagnetically oscillatable unit, an active element for producing and/or maintaining electromagnetic oscillations in the electromagnetically oscillatable unit, which active element forms together with the electromagnetically oscillatable unit an oscillator, a coupling unit, which is embodied to tap an output signal from the active element, and an evaluation unit, which evaluation unit is embodied to determine the at least one process variable from the received signal and/or from the output signal.

2. 发明授权

US11054512B2 Frequency converter circuit for a radar-based measuring device 有权
公开(公告)号：US11054512B2
公开(公告)日：2021-07-06
申请号：US16335406
申请日：2017-08-24
申请人： Endress+Hauser GmbH+Co. KG
发明人： Thomas Blödt , Peter Klöfer
IPC分类号： G01S13/34 , G01F23/284 , G01S7/35 , H03K5/00 , G01S7/03 , G01S7/282
摘要： The invention relates to a frequency converter circuit for a radar-based distance-measuring device. The core of the frequency converter circuit is a non-linear, high-frequency component, having a frequency connection point and a signal connection point, which serves as a signal input for a low-frequency input signal. On the reception side, the frequency converter circuit comprises at least one receiving antenna for receiving the high-frequency reception signal and a non-linear semiconductor component for downconverting the high-frequency reception signal. The frequency converter circuit therefore uses the effect that, by means of the low-frequency input signal, corresponding harmonic waves are induced at the non-linear, high-frequency component. Furthermore, the high-frequency reception signal is downconverted into a low-frequency evaluation signal, whereby the further determination of the distance can be performed on the basis of the low-frequency evaluation signal, which can be processed more easily.

3. 发明授权

US11022480B2 Method for checking the functional ability of a radar-based fill-level measuring device 有权
公开(公告)号：US11022480B2
公开(公告)日：2021-06-01
申请号：US15577910
申请日：2016-05-23
申请人： Endress+Hauser GmbH+Co. KG
发明人： Ghislain Daufeld , Jens Merle , Markus Vogel , Alexey Malinovskiy , Stefan Gorenflo
IPC分类号： G01F23/284 , G01F25/00 , G01S7/40 , G01S13/88
摘要： A method for checking the functional ability of an FMCW-based fill-level measuring device, which serves for measuring the fill level of a fill substance located in a container, as well as to a fill-level measuring device suitable for performing this method. For checking the functional ability, a microwave signal is produced, whose frequency change differs from the frequency change of the measurement signal used during regular measurement operation. By comparing the frequency of the difference signal resulting from the microwave signal with a predetermined reference frequency, it is ascertained, whether the fill-level measuring device is functionally able. Thus, the fill-level measuring device detects, independently, whether it is functionally able, or whether an error is present, caused principally by device-internal disturbance signals. This offers, especially, a clear advantage as regards meeting safety standards for the field device.

4. 发明授权

US10712219B2 Pressure sensor and method for monitoring a pressure sensor 有权
公开(公告)号：US10712219B2
公开(公告)日：2020-07-14
申请号：US15748529
申请日：2016-06-22
申请人： Endress+Hauser GmbH+Co. KG
发明人： Max Jehle , Davide Parrotto , Thomas Uehlin
IPC分类号： G01L9/00
摘要： A pressure sensor for determining a pressure measurement variable includes a housing, a pressure sensor element arranged in the housing, a lighting means arranged in the housing and a control/evaluation unit, the pressure sensor element having a semiconductor material and a measuring membrane, which has at least one integrated resistance element. When the measuring membrane experiences a pressure dependent deflection, the control/evaluation unit ascertains using the integrated resistance element, an electrical signal for determining the pressure measurement variable, wherein the lighting means optically excites the integrated resistance element, and the control/evaluation unit ascertains, based on a change of the electrical signal caused by the optical excitation, whether a malfunction of the pressure sensor is present.

5. 发明授权

US10631421B2 Field device with a component for filling potting compound 有权
公开(公告)号：US10631421B2
公开(公告)日：2020-04-21
申请号：US15753413
申请日：2016-07-26
申请人： Endress+Hauser GmbH+Co. KG
发明人： Christian Seiler , Willy Huwyler , Silvio Moser
IPC分类号： H05K5/00 , H05K5/06 , G01D11/24 , H05K7/14 , B29C39/10 , B29C39/26 , B29L31/34
CPC分类号： H05K5/064 , B29C39/10 , B29C39/26 , G01D11/245 , H05K7/1462 , B29L2031/34
摘要： The invention relates to a field device of automation technology with an opened housing and an electronics part in the housing, comprising at least one component for filling potting compound into the housing, wherein the component has a trough, in order to conduct the potting compound, with targeting, to a location of the housing to be potted.

6. 发明授权

US10623009B2 Frequency generator with two voltage controlled oscillators 有权
公开(公告)号：US10623009B2
公开(公告)日：2020-04-14
申请号：US15132678
申请日：2016-04-19
申请人： Endress + Hauser GmbH + Co. KG
发明人： Winfried Mayer , Martin Hitzler , Christian Waldschmidt
IPC分类号： H03L7/23 , G01F23/284 , H03L7/099 , G01S7/35 , G01S13/34 , G01S13/88 , H03L7/197
CPC分类号： H03L7/23 , G01F23/284 , G01S7/35 , G01S13/345 , G01S13/88 , H03L7/099 , H03L7/1976 , H03L2207/06
摘要： A frequency generator includes two voltage controlled oscillators, which have a plurality of switchable sub-bands, each, and which are designed to produce respective frequency signals, wherein a switching from one sub-band to a neighboring sub-band occurs at predetermined switching locations. The sub-bands of the second oscillator are arranged offset in frequency relative to the sub-bands of the first oscillator. The frequency generator includes an electronic switch element, which is designed to switch either the first or the second frequency signal through to the output of the electronic switch element, and to switch the switch element such that during the producing of the frequency ramp alternately either the first or the second frequency signal is switched through to the output. When at one of the oscillators the switching between two neighboring sub-bands is occurring, the frequency signal produced by the other oscillator is switched through to the output.

7. 发明授权

US10591443B2 Apparatus for determining or monitoring a process variable of automation technology 有权
公开(公告)号：US10591443B2
公开(公告)日：2020-03-17
申请号：US14913418
申请日：2014-07-08
申请人： Endress + Hauser GmbH + Co. KG
发明人： Sergej Lopatin , Raphael Kuhnen , Dietmar Fruhauf
IPC分类号： G01N29/036 , G01N11/16 , G01F23/296 , G01N9/00 , G01N9/24
摘要： A vibration sensor comprising an oscillatable unit, which is composed of a membrane with an inner surface and an outer surface and, in given cases, at least one oscillatory element secured on the outer surface of the membrane. A transmitting/receiving unit is provided, which with a predetermined exciter frequency excites the oscillatable unit to execute oscillations and which receives oscillations of the oscillatable unit. A control/evaluation unit is provided, which signals reaching of the predetermined fill level or ascertains the density, respectively the viscosity, of the medium. In order to be able to apply the vibration sensor in high temperature applications, a disc shaped element of a magnetostrictive material is provided, which has a force transmitting connection with the inner surface of the membrane. The transmitting/receiving unit is an electromagnetic drive.

8. 发明授权

US10557826B2 Vibronic sensor 有权
公开(公告)号：US10557826B2
公开(公告)日：2020-02-11
申请号：US15521625
申请日：2015-09-02
申请人： Endress + Hauser GmbH + Co. KG
发明人： Raphael Kuhnen , Ira Henkel , Peter Wimberger
IPC分类号： G01F23/296 , G01N11/16 , G01N29/22 , G01N29/46 , G01N29/07 , G01N9/00 , G01N29/02
摘要： An apparatus for determining and/or monitoring at least one process variable of a medium in a container, comprising at least an oscillatable unit having at least one membrane, and at least one oscillatory element, a driving/receiving unit embodied to excite the mechanically oscillatable unit by means of an electrical, exciter signal of adjustable excitation frequency to execute oscillations in an oscillation mode corresponding to the excitation frequency and to receive mechanical oscillations from the oscillatable unit and to convert such into an electrical received signal, and an electronics unit embodied, to produce the exciter signal, and to ascertain from the received signal the at least one process variable. The membrane is connected with the driving/receiving unit. The oscillatory element has the shape of an oscillatory rod, on which a paddle is terminally formed, and the oscillatory element is secured on the membrane in an end region remote from the paddle. Mass distribution, stiffness and/or geometry of the oscillatable unit is/are selected in such a manner that at least one of the oscillation modes of the oscillatable unit higher in reference to the oscillation mode corresponding to the excitation frequency lies in the range between two neighboring whole-numbered multiples of the excitation frequency.

9. 发明授权

US10422680B2 Method for monitoring at least one media-specific property of a medium 有权
公开(公告)号：US10422680B2
公开(公告)日：2019-09-24
申请号：US14889255
申请日：2014-04-22
申请人： Endress + Hauser GmbH + Co. KG
发明人： Armin Wernet , Gerd Bechtel , Kaj Uppenkamp , Franco Ferraro
IPC分类号： G01F23/26 , G01F23/24
摘要： A method and an apparatus for monitoring at least one media-specific property of a medium in automation technology with a measuring probe, wherein the at least one media-specific property is ascertained in a conductive operating mode and in a capacitive operating mode of the measuring probe. The conductive operating mode and the capacitive operating mode are operated alternately, wherein based on the measured values, which are ascertained in at least one of the two operating modes, it is checked, whether the at least one media-specific property to be monitored lies within a predetermined tolerance band, and wherein a report and/or a switching signal is generated, when the at least one media-specific property to be monitored lies outside of the predetermined tolerance band.

10. 发明授权

US10416021B2 Method for fill level measurement using the travel time principle 有权
公开(公告)号：US10416021B2
公开(公告)日：2019-09-17
申请号：US14782541
申请日：2014-02-17
申请人： Endress + Hauser GmbH + Co. KG
发明人： Stefan Gorenflo , Alexey Malinovskiy
IPC分类号： G01F25/00 , G01F23/284 , G01F23/296
摘要： A method for measuring a fill level of a fill substance in a container with a fill-level measuring device working according to the travel time principle. The fill-level measuring device in measurement operation sends transmission signals toward the fill substance in the container and, based on their signal fractions reflected back in the container, derives echo functions, which give the amplitudes of the signal fractions as a function of their travel time. With the assistance of a table, whose rows correspond to discrete fill levels and whose columns correspond to discrete travel times, and in which are stored as historical measurement points, in each case, in that row, whose row index corresponds to the associated fill level, information derived from echo functions derived in the past concerning travel times of echo function maxima attributed to reflections on reflectors located in the container, that also delivers reliable measurement results, when measuring conditions at the location of use of the fill-level measuring device can change, wherein the table is continuously updated based on current echo functions derived in ongoing measurement operation, wherein current measurement points derived from current echo functions are stored.

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