Patents by Inventor Hakan Delin
Hakan Delin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11940315Abstract: A filling level determination system, for determining a filling level of a product in a tank, comprising a measurement unit for arrangement at a measurement position, the measurement unit including a transceiver; and an antenna arrangement coupled to the transceiver for radiating an electromagnetic transmit signal generated by the transceiver from the measurement position towards a target position on the tank wall, and for returning an electromagnetic first reflection signal resulting from reflection of the transmit signal at the target position back towards the transceiver; and processing circuitry coupled to the transceiver of the measurement unit and being configured to determine the filling level based on tank deformation data indicative of a known relation between the level of the product in the tank and deformation of the tank at the first target position, and a timing relation between the first transmit signal and the first reflection signal.Type: GrantFiled: June 7, 2022Date of Patent: March 26, 2024Assignee: ROSEMOUNT TANK RADAR ABInventors: Håkan Delin, Lars-Ove Larsson, Stig Larsson, Peter Schachinger, Thomas Örtenberg
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Publication number: 20230400348Abstract: A vibration monitoring system comprising a measurement unit and processing circuitry coupled to the measurement unit and an imaging unit, and configured to: acquire, from the measurement unit, vibration data for each target in the plurality of targets; acquire, from an imaging unit, an image of a scene including each target in the plurality of targets; determine a vibration monitoring data structure; and provide the vibration monitoring data structure to a remote device, allowing display at the remote device of a visual representation of the scene including each target in the plurality of targets, and a representation of the vibration data for each target in the plurality of targets.Type: ApplicationFiled: May 30, 2023Publication date: December 14, 2023Inventors: Nicolas Preisig, Håkan Delin, Christoffer Widahl
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Patent number: 11579006Abstract: Method and system for detecting a cleaning process in a radar level gauge configured to determine a fill level of a product contained in a tank, the radar level gauge comprising a transceiver configured to provide a transmit signal, ST, to be propagated towards the product by a propagating device, to receive a reflected signal, SR, resulting from a reflection of the transmit signal at a surface of the product, and to determine a fill level in the tank based on the received reflected signal, wherein the method comprises: at a measurement position above the fill level and a known distance from a reference position near a ceiling of the tank, determining a difference in signal amplitude between at least two different fill level measurements; and if the determined difference in signal amplitude exceeds a predetermined threshold value, determining that a cleaning process is ongoing in the tank.Type: GrantFiled: September 16, 2021Date of Patent: February 14, 2023Assignee: ROSEMOUNT TANK RADAR ABInventors: Håkan Delin, Pär Abrahamsson
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Publication number: 20230003571Abstract: A filling level determination system, for determining a filling level of a product in a tank, comprising a measurement unit for arrangement at a measurement position, the measurement unit including a transceiver; and an antenna arrangement coupled to the transceiver for radiating an electromagnetic transmit signal generated by the transceiver from the measurement position towards a target position on the tank wall, and for returning an electromagnetic first reflection signal resulting from reflection of the transmit signal at the target position back towards the transceiver; and processing circuitry coupled to the transceiver of the measurement unit and being configured to determine the filling level based on tank deformation data indicative of a known relation between the level of the product in the tank and deformation of the tank at the first target position, and a timing relation between the first transmit signal and the first reflection signal.Type: ApplicationFiled: June 7, 2022Publication date: January 5, 2023Inventors: Håkan Delin, Lars-Ove Larsson, Stig Larsson, Peter Schachinger, Thomas Örtenberg
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Patent number: 11385093Abstract: A radar level gauge system comprising a transceiver; a signal propagation arrangement power monitoring circuitry for determining a presently available power for operation of the radar level gauge system; and processing circuitry coupled to the transceiver and to the power monitoring circuitry, and configured to: acquire a measure indicative of the presently available power for operation of the radar level gauge system from the power monitoring circuitry; perform a set of measurement operations dependent on the presently available power for operation of the radar level gauge system, each measurement operation including controlling the transceiver to generate and transmit an electromagnetic transmit signal, to receive an electromagnetic reflection signal, and to form a measurement signal indicative of a timing relation between the transmit signal and the reflection signal; and determine the filling level based on the measurement signal formed in each of the measurement operations in the set of measurement operaType: GrantFiled: May 11, 2020Date of Patent: July 12, 2022Assignee: ROSEMOUNT TANK RADAR ABInventors: Håkan Delin, Håkan Samor
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Publication number: 20220163625Abstract: A method of detecting leakage, comprising the steps of: performing a sequence of monitoring operations; and providing, when it is determined that leakage is present, a signal indicative of detected leakage. Each monitoring operation includes the steps of: generating a transmit signal exhibiting a time-varying frequency; receiving a reflection signal resulting from reflection of the transmit signal at the surface; forming an intermediate frequency signal for the present monitoring operation based on the transmit signal and the reflection signal; determining a phase of the intermediate frequency signal for the present monitoring operation; determining, based on the phase for the present monitoring operation and the phase associated with at least one previous monitoring operation, a measure indicative of a present rate of change of the phase; comparing the measure with a predefined threshold value; and determining a presence of leakage based on the comparison.Type: ApplicationFiled: March 26, 2019Publication date: May 26, 2022Inventors: Håkan Delin, Urban Blomberg, Lars-Ove Larsson
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Publication number: 20220107217Abstract: Method and system for detecting a cleaning process in a radar level gauge configured to determine a fill level of a product contained in a tank, the radar level gauge comprising a transceiver configured to provide a transmit signal, ST, to be propagated towards the product by a propagating device, to receive a reflected signal, SR, resulting from a reflection of the transmit signal at a surface of the product, and to determine a fill level in the tank based on the received reflected signal, wherein the method comprises: at a measurement position above the fill level and a known distance from a reference position near a ceiling of the tank, determining (300) a difference in signal amplitude between at least two different fill level measurements; and if the determined difference in signal amplitude exceeds a predetermined threshold value, determining (302) that a cleaning process is ongoing in the tank.Type: ApplicationFiled: September 16, 2021Publication date: April 7, 2022Inventors: Håkan Delin, Pär Abrahamsson
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Publication number: 20200400480Abstract: A radar level gauge system comprising a transceiver; a signal propagation arrangement coupled to the transceiver; power monitoring circuitry for determining a measure indicative of a presently available power for operation of the radar level gauge system; and processing circuitry coupled to the transceiver and to the power monitoring circuitry, and configured to: acquire the measure indicative of a presently available power for operation of the radar level gauge system from the power monitoring circuitry; perform a set of measurement operations dependent on the presently available power for operation of the radar level gauge system, each measurement operation including controlling the transceiver to generate and transmit an electromagnetic transmit signal, to receive an electromagnetic reflection signal, and to form a measurement signal indicative of a timing relation between the transmit signal and the reflection signal; and determine the filling level based on the measurement signal formed in each of the meType: ApplicationFiled: May 11, 2020Publication date: December 24, 2020Inventors: Håkan Delin, Håkan Samor
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Patent number: 10816385Abstract: The present invention relates to a radar level gauge for determining a distance (D) to a surface of a product in a tank, said radar level gauge comprising: a transceiver configured to transmit an electromagnetic transmit signal (ST) with varying frequency towards said surface and to receive an electromagnetic return signal (SR), via a signal propagation device; a mixer adapted to mix the transmitted electromagnetic transmit signal with the received electromagnetic return signal to provide a mixer output signal including information about the surface's echo and information about another echo; and processing circuitry configured to apply an algorithm to the mixer output signal, which algorithm provides a distance-level rate matrix wherein the surface's echo and said another echo each is determined in the two dimensions distance and level rate, and to determine the distance to the surface based on the thus determined echo of the surface.Type: GrantFiled: June 21, 2018Date of Patent: October 27, 2020Assignee: ROSEMOUNT TANK RADAR ABInventors: Urban Blomberg, Håkan Delin, Lars-Ove Larsson
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Patent number: 10775221Abstract: A radar level gauge comprising transceiver circuitry configured to obtain a tank signal including a peak representing a surface echo, and at least one peak caused by a ghost echo in a neighborhood of the surface echo. The gauge further includes a tank signal filter receiving the tank signal as input and providing an echo threshold profile, the threshold profile having at least one local maximum substantially coinciding with one of the peaks in the tank signal, and processing circuitry configured to use the echo threshold profile to disregard peaks in the tank signal which are associated with ghost reflections. The filtering of the tank signal thus provides an adaptive threshold, which is aligned with the peak(s) in the tank signal. By using this threshold in the surface echo identification, at least some ghost echoes occurring in the tank signal may be disregarded.Type: GrantFiled: September 29, 2017Date of Patent: September 15, 2020Assignee: ROSEMOUNT TANK RADAR ABInventors: Urban Blomberg, Lars Ove Larsson, Håkan Delin
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Patent number: 10746585Abstract: A radar level gauge for determining a process variable of product in a tank, having processing circuitry configured to process a tank signal and, when no surface echo can be identified, enter a wait state. The wait state includes a) storing the tank signal in memory, b) obtaining a wait state tank signal, c) comparing the wait state tank signal with the stored tank signal to determine a tank signal difference measure, d) repeating steps b) and c) until the tank signal difference measure is greater than a predefined threshold, e) processing the wait state tank signal to identify a surface echo, and f) when no surface echo can be identified in the wait state tank signal, setting an alarm. By storing the tank signal when the wait state is entered, it is therefore possible to defer an alarm until the tank signal deviates from this stored tank signal.Type: GrantFiled: September 29, 2017Date of Patent: August 18, 2020Assignee: ROSEMOUNT TANK RADAR ABInventors: Håkan Delin, Urban Blomberg, Lars Ove Larsson
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Publication number: 20190390997Abstract: The present invention relates to a radar level gauge for determining a distance (D) to a surface of a product in a tank, said radar level gauge comprising: a transceiver configured to transmit an electromagnetic transmit signal (ST) with varying frequency towards said surface and to receive an electromagnetic return signal (SR), via a signal propagation device; a mixer adapted to mix the transmitted electromagnetic transmit signal with the received electromagnetic return signal to provide a mixer output signal including information about the surface's echo and information about another echo; and processing circuitry configured to apply an algorithm to the mixer output signal, which algorithm provides a distance-level rate matrix wherein the surface's echo and said another echo each is determined in the two dimensions distance and level rate, and to determine the distance to the surface based on the thus determined echo of the surface.Type: ApplicationFiled: June 21, 2018Publication date: December 26, 2019Inventors: Urban Blomberg, Håkan Delin, Lars-Ove Larsson
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Publication number: 20190101430Abstract: A radar level gauge comprising transceiver circuitry configured to obtain a tank signal including a peak representing a surface echo, and at least one peak caused by a ghost echo in a neighborhood of the surface echo. The gauge further includes a tank signal filter receiving the tank signal as input and providing an echo threshold profile, the threshold profile having at least one local maximum substantially coinciding with one of the peaks in the tank signal, and processing circuitry configured to use the echo threshold profile to disregard peaks in the tank signal which are associated with ghost reflections. The filtering of the tank signal thus provides an adaptive threshold, which is aligned with the peak(s) in the tank signal. By using this threshold in the surface echo identification, at least some ghost echoes occurring in the tank signal may be disregarded.Type: ApplicationFiled: September 29, 2017Publication date: April 4, 2019Inventors: Urban Blomberg, Lars Ove Larsson, Håkan Delin
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Publication number: 20190101431Abstract: A radar level gauge for determining a process variable of product in a tank, having processing circuitry configured to process a tank signal and, when no surface echo can be identified, enter a wait state. The wait state includes a) storing the tank signal in memory, b) obtaining a wait state tank signal, c) comparing the wait state tank signal with the stored tank signal to determine a tank signal difference measure, d) repeating steps b) and c) until the tank signal difference measure is greater than a predefined threshold, e) processing the wait state tank signal to identify a surface echo, and f) when no surface echo can be identified in the wait state tank signal, setting an alarm. By storing the tank signal when the wait state is entered, it is therefore possible to defer an alarm until the tank signal deviates from this stored tank signal.Type: ApplicationFiled: September 29, 2017Publication date: April 4, 2019Inventors: Håkan Delin, Urban Blomberg, Lars Ove Larsson
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Patent number: 9989628Abstract: The present invention relates to a method of controlling a pulsed radar level gauge system, comprising the steps of: acquiring a signal indicative of a present operating temperature; determining an initial frequency control parameter for control of at least one of transmission signal generating circuitry and reference signal generating circuitry based on the present operating temperature and a plurality of data sets each comprising data indicative of a previous operating temperature and a previously determined frequency control parameter for the previous operating temperature; and controlling, starting from the initial frequency control parameter, at least one of the transmission signal generating circuitry and the reference signal generating circuitry to achieve the known frequency difference between the first pulse repetition frequency and the second pulse repetition frequency at the present operating temperature.Type: GrantFiled: June 29, 2012Date of Patent: June 5, 2018Assignee: Rosemount Tank Radar ABInventors: Leif Nilsson, Håkan Delin, Håkan Nyberg
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Patent number: 9709433Abstract: A method for powering a radar level gauge, comprising an initial frequency stabilization procedure, ensuring a stable separation frequency between a first and a second clock frequencies, during which frequency stabilization procedure said radar level gauge is not powered to provide a level output, and a subsequent measurement cycle, performed only when a stable separation frequency has been established, during which said radar level gauge is powered to provide a level output. The present invention allows a radar level gauge system to save power by not providing power to and operating the radar level gauge circuit during such times when the frequency separation would not enable the radar level gauge to provide proper level measurements.Type: GrantFiled: June 30, 2014Date of Patent: July 18, 2017Assignee: Rosemount Tank Radar ABInventors: Leif Nilsson, Hakan Nyberg, Hakan Delin
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Patent number: 9593976Abstract: The present invention relates to a pulsed level gauge system comprising frequency control circuitry. If an acquired signal indicates that the time between the previous filling level determination and the present filling level determination is shorter than a predefined time, the frequency control circuitry controls at least one of a transmit signal generating circuitry and a reference signal generating circuitry comprised in the pulsed level gauge system using previous frequency control settings stored in memory.Type: GrantFiled: May 19, 2014Date of Patent: March 14, 2017Assignee: Rosemount Tank Radar ABInventors: Leif Nilsson, Hakan Delin, Hakan Nyberg
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Publication number: 20150377679Abstract: A method for powering a radar level gauge, comprising an initial frequency stabilization procedure, ensuring a stable separation frequency between a first and a second clock frequencies, during which frequency stabilization procedure said radar level gauge is not powered to provide a level output, and a subsequent measurement cycle, performed only when a stable separation frequency has been established, during which said radar level gauge is powered to provide a level output. The present invention allows a radar level gauge system to save power by not providing power to and operating the radar level gauge circuit during such times when the frequency separation would not enable the radar level gauge to provide proper level measurements.Type: ApplicationFiled: June 30, 2014Publication date: December 31, 2015Inventors: Leif Nilsson, Hakan Nyberg, Hakan Delin
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Publication number: 20150330825Abstract: The present invention relates to a pulsed level gauge system comprising frequency control circuitry. If an acquired signal indicates that the time between the previous filling level determination and the present filling level determination is shorter than a predefined time, the frequency control circuitry controls at least one of a transmit signal generating circuitry and a reference signal generating circuitry comprised in the pulsed level gauge system using previous frequency control settings stored in memory.Type: ApplicationFiled: May 19, 2014Publication date: November 19, 2015Applicant: Rosemount Tank Radar ABInventors: Leif Nilsson, Hakan Delin, Hakan Nyberg
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Patent number: 9035822Abstract: A method of determining a filling level of a product contained in a tank using a level gauge system, comprising the steps of: transmitting a first signal towards a surface of the product; receiving a first echo signal; determining a present echo characteristic value based on the first echo signal; and comparing the present echo characteristic value and a stored echo characteristic value. If a difference between the present echo characteristic value and the stored echo characteristic value is greater than a predefined value, the method further comprises transmitting at least a second transmit signal towards the surface; receiving at least a second echo signal; and determining the filling level based on the at least second electromagnetic echo signal.Type: GrantFiled: June 18, 2012Date of Patent: May 19, 2015Assignee: Rosemount Tank Radar ABInventors: Leif Nilsson, Håkan Delin, Håkan Nyberg