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公开(公告)号：US11255714B2
公开(公告)日：2022-02-22
申请号：US15747192
申请日：2016-07-26
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.
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公开(公告)号：US11054512B2
公开(公告)日：2021-07-06
申请号：US16335406
申请日：2017-08-24
发明人： Thomas Blödt , Peter Klöfer
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.
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公开(公告)号：US11022480B2
公开(公告)日：2021-06-01
申请号：US15577910
申请日：2016-05-23
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.
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公开(公告)号：US10725443B2
公开(公告)日：2020-07-28
申请号：US11587145
申请日：2005-03-23
IPC分类号： H04W88/00 , H04W92/00 , H04W84/18 , G05B19/042
摘要： A radio module RM for field devices of automation technology is connectable with a field device, e.g. F1, via a field device interface. The radio module RM includes a microcontroller μC for function control, a radio unit RF for data communication with a superordinated unit, and an energy supply unit ESU. With the help of the radio module RM, conventional field devices can be adapted simply to become radio-capable field devices, in order that they can then also be used in radio networks.
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公开(公告)号：US10209346B2
公开(公告)日：2019-02-19
申请号：US14910786
申请日：2014-07-08
IPC分类号： G01S7/35 , G01S7/40 , G01S13/34 , G01S13/88 , G01F23/284
摘要： A radar measurement apparatus works according to the FMCW principle and includes a radar transmission unit, and a radar receiving unit, which is designed to receive a radar received signal reflected on a surface of the medium or other target in a pipe or tube, to convert the received signal into an intermediate frequency signal by mixing with the transmission signal, or a signal derived therefrom, and based on an intermediate signal to determine distance to the surface of the medium or other target. The radar receiving unit applies a phase correction to the intermediate signal produces a phase corrected, intermediate frequency signal, wherein the phase correction lessens or removes a dispersion dependent phase fraction in the phase of the intermediate signal and adds a non-dispersion effects dependent phase fraction. The radar receiving unit is designed based on the phase corrected intermediate signal to determine the target frequency components in the intermediate frequency signal and based on the target frequency components to determine distance to the surface of the medium or other radar.
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公开(公告)号：US10048149B2
公开(公告)日：2018-08-14
申请号：US15104031
申请日：2014-11-14
发明人： Armin Rupp , Raphael Schonhardt , Michael Hugel
摘要： A relative pressure sensor (1) includes a pressure measuring cell (10) having a measuring diaphragm (12), a main body (14) which is connected to said measuring diaphragm, and a the measuring chamber between the measuring diaphragm and main body, a reference pressure being applied to the measuring chamber by a reference pressure channel (18) which runs from a rear face (16) of the main body (14) through the main body (14); a clamping ring (38); and a housing (40) which has at least one housing body (42) with a measuring cell chamber (46), wherein the pressure measuring cell (10) is clamped in the measuring cell chamber (46) by the clamping ring (38). The housing has a reference air opening (48) which communicates with the reference pressure channel (18) by a reference air path which has a path volume which is separate from the volume of the measuring cell chamber, wherein the reference air path has a section which runs along the rear face of the main body, wherein the section is bounded by the rear face of the main body and a guide body, which guide body is clamped in against the rear face of the main body and covers an opening of the reference pressure channel (18) in the rear face of the main body.
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公开(公告)号：US10018495B2
公开(公告)日：2018-07-10
申请号：US14649042
申请日：2013-11-25
发明人： Winfried Mayer , Roland Grozinger , Qi Chen
IPC分类号： G01F23/284
CPC分类号： G01F23/284
摘要： A radar-based fill-level measuring device comprising at least one synthesizer circuit having a plurality of circuit components for producing phase controlled microwave signals for a travel-time measurement and at least three electrical potentials for supplying the synthesizer circuit, wherein the synthesizer circuit has at least three circuit groups. Each circuit component is associated with at least one circuit group, wherein each of the at least three circuit groups is fed by means of at least one potential difference between two of the at least three different potentials.
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公开(公告)号：US09989431B2
公开(公告)日：2018-06-05
申请号：US15103107
申请日：2014-11-14
发明人： Andreas Rossberg , Olaf Textor , Elmar Wosnitza
IPC分类号： G01L9/00
CPC分类号： G01L9/0072 , G01L9/0051
摘要： A pressure sensor comprises a deformable measuring diaphragm, and a mating body connected in a pressure-tight manner and forms a measuring chamber in which a reference pressure is present. A pressure can be applied to an outside of the measuring diaphragm. The pressure sensor has a capacitive transducer having at least one mating body electrode and at least one diaphragm electrode. Above a pressure limit value for the pressure, at least one central surface section of the measuring diaphragm rests against the mating body with a contact surface area, the size of which is dependent on the pressure. The pressure sensor also has a resistive transducer for converting a pressure-dependent deformation of the measuring diaphragm, when pressed in a range of values above the pressure limit value, into an electrical signal using an electrical resistance which is dependent on the contact surface area of the measuring diaphragm on the mating body.
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公开(公告)号：US09989401B2
公开(公告)日：2018-06-05
申请号：US13976604
申请日：2011-12-01
申请人： Franco Ferraro , Harald Faber , Steffen Markoni
发明人： Franco Ferraro , Harald Faber , Steffen Markoni
IPC分类号： G01F23/28 , G01F25/00 , G01F23/284 , G01F23/00 , G01F23/296
CPC分类号： G01F25/0084 , G01F23/00 , G01F23/284 , G01F23/2962 , G01F23/2967 , G01F25/0061
摘要： A measuring device featuring ascertaining and monitoring optimized orientation of the measuring device. Thus, the invention provides a measuring device for determining and/or monitoring limit level or fill level of a medium in a container, comprising at least one sensor unit and a measurement transmitter unit, wherein at least one inclination sensor is integrated in the measuring device for ascertaining orientation of the measuring device and/or the sensor unit on the container.
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公开(公告)号：US09903909B2
公开(公告)日：2018-02-27
申请号：US12312434
申请日：2007-10-15
申请人： Dietmar Spanke , Herbert Schroth , Manfred Hammer
发明人： Dietmar Spanke , Herbert Schroth , Manfred Hammer
CPC分类号： G01R31/2849
摘要： An electronic device including electronics arranged in an electronics compartment and having electronic and/or electromechanical components. The device automatically detects and/or monitors wear of its electronic and/or electromechanical components and includes an apparatus for detecting and/or monitoring wear of the electronic and/or electromechanical components. Included is at least one element arranged in the electronics compartment. This element is independent of the electronics and has at least one physical property, which changes irreversibly as a function of wear of the element. The apparatus further includes a circuit for measuring the physical property, and an evaluating unit, which, based on the measured physical property, detects and/or monitors wear of the element and makes available a wear-dependent output signal.
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