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公开(公告)号：US11275153B2
公开(公告)日：2022-03-15
申请号：US16360150
申请日：2019-03-21
Applicant: Endress+Hauser SE+Co. KG
Inventor： Alexey Malinovskiy , Harald Faber
Abstract: The present disclosure relates to a method for FMCW-based measurement of a distance of an object located in a waveguide, as well as a corresponding distance measurement device that, in particular, may be used for fill-level measurement in surge pipes or bypass pipes of containers. The method is based upon the fact that the transmission signal that is typical in FMCW is not ramp-like, and thus is emitted with constant frequency modulation. Rather, according to the present disclosure, a curvature of the frequency ramp is set to be at least approximately proportional to the frequency dependency of the propagation velocity of the transmission signal in the waveguide. The distortion effect is thus compensated for in that the propagation velocity of the transmission signal in waveguides is not constant, but, rather, decreases with falling transmission frequency.
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公开(公告)号：US20240353251A1
公开(公告)日：2024-10-24
申请号：US18569274
申请日：2022-05-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Alexey Malinovskiy , Ralf Reimelt
IPC: G01F23/284 , G01F23/80 , G01S7/41 , G06N20/00
CPC classification number: G01F23/284 , G01F23/80 , G01S7/417 , G06N20/00
Abstract: A measuring system for detecting a boundary layer on a product in a container includes a radar-based measuring device with an antenna or a measuring sensor for transmitting high-frequency signals toward the product and, after reflection at the product surface, for receiving as received signals; a signal generation unit that generates the high-frequency signal; and a receiving unit that to record the received signal. The measuring system further includes an evaluation unit in which a machine learning algorithm is formed to detect the boundary layer on the basis of the received signal. The implementation of a machine learning algorithm according to the invention avoids the problem that the boundary layer or the additive product layer in the received signal often does not generate a clearly assignable signal maximum, which known distance measurement methods according to the prior art require for its detection.
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公开(公告)号：US12111198B2
公开(公告)日：2024-10-08
申请号：US17278813
申请日：2019-08-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Jens Merle , Alexey Malinovskiy , Stefan Gorenflo , Markus Vogel
IPC: G01F23/284
CPC classification number: G01F23/284
Abstract: Disclosed is a method for detecting an event-based state, such as foam formation or a working stirring mechanism in a container during a radar-based measurement of a fill level of a filler located in a container. The method includes: generating an analysis curve and detecting a specified characteristic value of the analysis curve within at least one specified sub-region of the measurement region. The characteristic value can be the amplitude of a local maximum or the area under the analysis curve for example. A change or a dispersion of the characteristic value is ascertained over proceeding measurement cycles. The fill level measuring device detects the event-based state if the change or the dispersion exceeds a corresponding threshold. Thus, the occurrence of different events in the container can be imparted to a system controller automatically and without additional measurement instruments.
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公开(公告)号：US20220034700A1
公开(公告)日：2022-02-03
申请号：US17278813
申请日：2019-08-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Jens Merle , Alexey Malinovskiy , Stefan Gorenflo , Markus Vogel
IPC: G01F23/284
Abstract: Disclosed is a method for detecting an event-based state, such as foam formation or a working stirring mechanism in a container during a radar-based measurement of a fill level of a filler located in a container. The method includes: generating an analysis curve and detecting a specified characteristic value of the analysis curve within at least one specified sub-region of the measurement region. The characteristic value can be the amplitude of a local maximum or the area under the analysis curve for example. A change or a dispersion of the characteristic value is ascertained over proceeding measurement cycles. The fill level measuring device detects the event-based state if the change or the dispersion exceeds a corresponding threshold. Thus, the occurrence of different events in the container can be imparted to a system controller automatically and without additional measurement instruments.
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公开(公告)号：US11946789B2
公开(公告)日：2024-04-02
申请号：US17278864
申请日：2019-08-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Ghislain Daufeld , Stefan Gorenflo , Alexey Malinovskiy , Jens Merle , Markus Vogel
IPC: G01F23/284
CPC classification number: G01F23/284
Abstract: Disclosed is a method for a radar-based fill level measurement according to the pulse transit time method. Also disclosed a fill level measuring device for carrying out said method. On the basis of an evaluation signal, the relation between the clock rate and the sampling rate, and a predefined target relation, an evaluation curve is generated. The fill level is thereby determined on the basis of said evaluation curve. The evaluation curve is generated by means of temporal expansion or compression of the evaluation signal, wherein the compression or the expansion is carried out as a function of a ratio between the measured relation and the target relation. Any deviation of the sampling rate from the setpoint value of the sampling rate, for example due to faulty control, is compensated. Thus, the potentially attainable accuracy of the fill level measurement is increased due to the invention.
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Patent Agency Ranking
公开(公告)号：US11644827B2
公开(公告)日：2023-05-09
申请号：US17275320
申请日：2019-08-15
Applicant: Endress+Hauser SE+Co. KG
Inventor： Manfred Niederer , Stefan Robl , Ervin Binkert , Alexey Malinovskiy , Heiko Oehme , Zurab Khadikov , Ulrich Kaiser
CPC classification number: G05B23/0283 , G05B13/027 , G05B23/0254
Abstract: Disclosed is a method for improving the measuring performance of automation field devices, wherein each of the field devices determines a process variable using a measuring algorithm and is exposed to measurable environmental influences. The method includes capturing the calibration data of the field devices and capturing an item of environmental information of the field devices at defined time intervals; storing the environmental information, the calibration data, and a time stamp in a database; selecting a group of field devices which determine a process variable using the same measuring algorithm and which are exposed to the same environmental influences; correlating the environmental information and calibration data captured over time; creating a mathematical model relating the calibration data and the environmental information; adapting the measuring algorithm on the basis of the model; and transmitting the adapted measuring algorithm to all field devices in the group.
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公开(公告)号：US20220034701A1
公开(公告)日：2022-02-03
申请号：US17278864
申请日：2019-08-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Ghislain Daufeld , Stefan Gorenflo , Alexey Malinovskiy , Jens Merle , Markus Vogel
IPC: G01F23/284
Abstract: Disclosed is a method for a radar-based fill level measurement according to the pulse transit time method. Also disclosed a fill level measuring device for carrying out said method. On the basis of an evaluation signal, the relation between the clock rate and the sampling rate, and a predefined target relation, an evaluation curve is generated. The fill level is thereby determined on the basis of said evaluation curve. The evaluation curve is generated by means of temporal expansion or compression of the evaluation signal, wherein the compression or the expansion is carried out as a function of a ratio between the measured relation and the target relation. Any deviation of the sampling rate from the setpoint value of the sampling rate, for example due to faulty control, is compensated. Thus, the potentially attainable accuracy of the fill level measurement is increased due to the invention.
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公开(公告)号：US20240271985A1
公开(公告)日：2024-08-15
申请号：US18569415
申请日：2022-05-19
Applicant: Endress+Hauser SE+Co. KG
Inventor： Alexey Malinovskiy
IPC: G01F23/284
CPC classification number: G01F23/284
Abstract: A measuring system and a corresponding measuring method for reliably determining a fill level of a filling material in a container comprises a radar-based measuring device having a transmission unit via which high-frequency signals can be transmitted towards the filling material and received as received signals after reflection on the filling material surface; furthermore having a signal generation unit which generates the high-frequency signal to be transmitted; and having a receiving unit which records the received signal. In an evaluation unit of the measuring system, a machine learning algorithm is designed such that the fill level can be detected on the basis of the received signal. By the machine learning algorithm, received signals which are recorded under complex measuring conditions such as interference and multiple reflections can be interpreted much more reliably.
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公开(公告)号：US11959792B2
公开(公告)日：2024-04-16
申请号：US16755070
申请日：2018-09-11
Applicant: Endress+Hauser SE+Co. KG
Inventor： Stefan Gorenflo , Alexey Malinovskiy
IPC: G01F23/296 , G01F23/284 , G01F23/2962 , G01S7/292 , G01S7/35 , G01S7/527 , G01S13/88 , G01S15/88
CPC classification number: G01F23/2962 , G01F23/284 , G01S7/292 , G01S7/354 , G01S7/527 , G01S13/88 , G01S15/88
Abstract: The present disclosure relates to a method for safe and exact ascertaining of fill level of a fill substance located in a container by means of an ultrasonic, or radar-based, fill level measuring device. In such case, the method is distinguished by the feature that the evaluation curve created based on the reflected received signal is differently greatly smoothed as a function of measured distance. To achieve this, the evaluation curve can be specially filtered, depending on the application. In this way, noise fractions and disturbance echoes can be efficiently suppressed, without unnecessarily limiting the accuracy of the fill level measurement.
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公开(公告)号：US20230003570A1
公开(公告)日：2023-01-05
申请号：US17756440
申请日：2020-11-09
Applicant: Endress+Hauser SE+Co. KG
Inventor： Alexey Malinovskiy , Stefan Gorenflo , Harald Faber , Markus Vogel , Ghislain Daufeld
IPC: G01F23/284 , G01S13/34 , G01S7/35
Abstract: An FMCW-radar based distance measuring device is characterized in that, in addition to analogue high-pass and low-pass filtering, the evaluation signal typical for FMCW additionally undergoes subsequent digital filtering. In this case, the analogue/digital conversion takes place by oversampling. As a result, according to the invention, all those frequencies in the evaluation signal that are above or below the frequency corresponding to the distance of the object are effectively suppressed. At the same time, the analogue filters can be constructed with a very low level of complexity. The space requirement and the costs of the analogue components is reduced thereby. In addition, the dependence on temperature of the distance measuring device is reduced thereby. The potentially high distance resolution is also maintained.
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