Patents by Inventor Lars-Olov Hedin
Lars-Olov Hedin 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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Publication number: 20230304849Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal So as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: ApplicationFiled: December 21, 2022Publication date: September 28, 2023Inventor: Lars-Olov HEDIN
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Patent number: 11561127Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal So as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: GrantFiled: June 7, 2019Date of Patent: January 24, 2023Assignee: S.P.M. Instrument ABInventor: Lars-Olov Hedin
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Publication number: 20220341815Abstract: An apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), comprising: a first sensor (10) adapted to generate an analogue electric measurement signal (SEA) dependent on mechanical vibrations (VMD) emanating from rotation of said part; an analogue-to-digital converter (40, 44) adapted to sample said analogue electric measurement signal (SEA) at an initial sampling frequency (fs) so as to generate a digital measurement data signal (SMD, SENV) in response to said received analogue electric measurement signal (SEA); a device (420) for generating a position signal (Ep) having a sequence of position signal values (P(i)) for indicating momentary rotational positions of said rotating part; and a speed value generator (601) being adapted for recording a time sequence of said position signal values (P(i)) such that there are angular distances (delta-FIp1-p2, delta-FIp2-p3) and corresponding durations (delta-Tp1-p2; delta-Tp2-p3) between at least three consecutive posiType: ApplicationFiled: February 7, 2022Publication date: October 27, 2022Inventor: Lars-Olov Hedin
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Patent number: 11255747Abstract: An apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), comprising: a first sensor (10) adapted to generate an analogue electric measurement signal (SEA) dependent on mechanical vibrations (VMD) emanating from rotation of said part; an analogue-to-digital converter (40, 44) adapted to sample said analogue electric measurement signal (SEA) at an initial sampling frequency (fS) so as to generate a digital measurement data signal (SMD, SENV) in response to said received analogue electric measurement signal (SEA); a device (420) for generating a position signal (Ep) having a sequence of position signal values (P(i)) for indicating momentary rotational positions of said rotating part; and a speed value generator (601) being adapted for recording a time sequence of said position signal values (P(i)) such that there are angular distances (delta-FIp1-p2, delta-FIp2-p3) and corresponding durations (delta-Tp1-p2; delta-Tp2-p3) between at least three consecutive posiType: GrantFiled: May 30, 2019Date of Patent: February 22, 2022Assignee: S.P.M. Instrument ABInventor: Lars-Olov Hedin
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Publication number: 20190391004Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal So as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: ApplicationFiled: June 7, 2019Publication date: December 26, 2019Inventor: Lars-Olov HEDIN
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Publication number: 20190383702Abstract: An apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), comprising: a first sensor (10) adapted to generate an analogue electric measurement signal (SEA) dependent on mechanical vibrations (VMD) emanating from rotation of said part; an analogue-to-digital converter (40, 44) adapted to sample said analogue electric measurement signal (SEA) at an initial sampling frequency (fS) so as to generate a digital measurement data signal (SMD, SENV) in response to said received analogue electric measurement signal (SEA); a device (420) for generating a position signal (Ep) having a sequence of position signal values (P(i)) for indicating momentary rotational positions of said rotating part; and a speed value generator (601) being adapted for recording a time sequence of said position signal values (P(i)) such that there are angular distances (delta-FIp1-p2, delta-FIp2-p3) and corresponding durations (delta-Tp1-p2; delta-Tp2-p3) between at least three consecutive posiType: ApplicationFiled: May 30, 2019Publication date: December 19, 2019Inventor: Lars-Olov Hedin
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Patent number: 10337957Abstract: An apparatus for analyzing the condition of a machine having a rotating part, includes: a first sensor for generating an analogue electric measurement signal; an analogue-to-digital converter for sampling the analogue electric measurement signal at an initial sampling frequency to generate a digital measurement data signal in response to the received analogue electric measurement signal; a device for generating a position signal having a sequence of position signal values for indicating momentary rotational positions of the rotating part; and a speed value generator for recording a time sequence of the position signal values such that there are angular distances and corresponding durations between at least three consecutive position signals, wherein the speed value generator establishes at least two momentary speed values based on the angular distances and corresponding durations, and further momentary speed values for the rotating part are established by interpolation between the two momentary speed valuType: GrantFiled: January 30, 2013Date of Patent: July 2, 2019Assignee: S.P.M. Instrument ABInventor: Lars-Olov Hedin
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Patent number: 10330523Abstract: A method of operating an apparatus for analyzing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal so as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: GrantFiled: January 29, 2016Date of Patent: June 25, 2019Assignee: S.P.M. Instrument ABInventor: Lars-Olov Hedin
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Publication number: 20160290854Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal so as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: ApplicationFiled: January 29, 2016Publication date: October 6, 2016Inventor: Lars-Olov HEDIN
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Patent number: 9279715Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation, includes receiving a first digital signal dependent on mechanical vibrations emanating from rotation of the part, analyzing the first digital signal so as to detect peak amplitude values during a finite time period, the finite time period corresponding to a certain amount of revolution of the part, the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part, defining amplitude ranges, sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values within the plurality of amplitude ranges, and estimating a representative peak amplitude value in dependence on the sorted peak amplitude values and the certain amount.Type: GrantFiled: January 13, 2011Date of Patent: March 8, 2016Assignee: S.P.M. INSTRUMENT ABInventor: Lars-Olov Hedin
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Publication number: 20150032389Abstract: An apparatus for analyzing the condition of a machine having a rotating part, includes: a first sensor for generating an analogue electric measurement signal; an analogue-to-digital converter for sampling the analogue electric measurement signal at an initial sampling frequency to generate a digital measurement data signal in response to the received analogue electric measurement signal; a device for generating a position signal having a sequence of position signal values for indicating momentary rotational positions of the rotating part; and a speed value generator for recording a time sequence of the position signal values such that there are angular distances and corresponding durations between at least three consecutive position signals, wherein the speed value generator establishes at least two momentary speed values based on the angular distances and corresponding durations, and further momentary speed values for the rotating part are established by interpolation between the two momentary speed valuType: ApplicationFiled: January 30, 2013Publication date: January 29, 2015Applicant: S.P.M. INSTRUMENT ABInventor: Lars-Olov Hedin
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Publication number: 20120296582Abstract: A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (fROT), includes: receiving a first digital signal (SRED, SMD, SENV) dependent on mechanical vibrations emanating from rotation of the part; analyzing the first digital signal (SRED, SMD, SENV) so as to detect peak amplitude values (Ap) during a finite time period (Pm), the finite time period corresponding to a certain amount (R) of revolution of the part; the certain amount of revolution corresponding to more than one revolution of the monitored rotatable part; defining a plurality (NR) of amplitude ranges; sorting the detected peak amplitude values into corresponding amplitude ranges so as to reflect occurrence (N) of detected peak amplitude values within the plurality of amplitude ranges; estimating a representative peak amplitude value (APR) in dependence on the sorted peak amplitude values and the certain amount (R).Type: ApplicationFiled: January 13, 2011Publication date: November 22, 2012Applicant: S.P.M. INSTRUMENT ABInventor: Lars-Olov Hedin