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公开(公告)号：US20240344855A1
公开(公告)日：2024-10-17
申请号：US18298899
申请日：2023-04-11
CPC分类号： G01D5/48 , G01D5/24476
摘要： A wave-based sensor system includes at least one transmitter unit configured to emit waves. The wave-based sensor system further includes at least one receiver unit configured to receive waves and to generate at least one sensor signal corresponding to the received waves. The wave-based sensor system further includes at least one interference detection unit configured to detect interfering waves and to generate at least one interference sensor signal corresponding to the detected interfering waves. The wave-based sensor system further includes a signal processing circuit connected with the at least one receiver unit and the at least one interference detection unit. The signal processing circuit is configured to correct the at least one sensor signal based on the at least one interference sensor signal, thereby obtaining at least one corrected sensor signal. Further, a sensor signal correction method of correcting at least one sensor signal is described.
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公开(公告)号：US20240133721A1
公开(公告)日：2024-04-25
申请号：US18511325
申请日：2023-11-16
申请人： Balluff GmbH
发明人： Zoltan Kantor , Attila Szabo , Tobias Konig
摘要： In the method and the device described here for operating an electromagnetic, in particular magnetostrictive, or acoustic position measuring device (10) having at least one position sensor (44), at least one position encoder (20) and a waveguide (14), said position measuring device having a control device for triggering an interrogation pulse in the waveguide (14) and an evaluation unit for evaluating a wave form (400-450) recorded by the position sensor (44), wherein the time between the triggering of the interrogation pulse and the point in time at which the wave form (400-450) recorded by the position sensor (44) is recorded is measured to determine the position of the position encoder (20) via the relationship between distance and time, it is in particular provided that position recognition is implemented by means of the position encoder (20) by localising patterns in the wave form (400-450) recorded by the position sensor (44), wherein the localisation of such patterns is implemented on the basis of correlation observations and wherein a cross-correlation pattern characterising the position encoder (20) is transformed into another pattern that enables autonomous position recognition of the position encoder (20) by means of machine learning.
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3.发明授权公开(公告)号：US11562454B2
公开(公告)日：2023-01-24
申请号：US17148724
申请日：2021-01-14
申请人： Gregg J. Chapman
发明人： Gregg J. Chapman
IPC分类号： G06Q50/26 , G06F21/60 , G06F21/62 , G06F9/54 , G06Q50/00 , G06N5/04 , G09B19/00 , G06N20/00 , A61B6/00 , G01D5/48 , G01T1/16 , G01T1/202 , G01T1/24 , H04L67/53 , H04L67/50 , G06Q10/10
摘要： A hybrid collimated probe incorporates two detectors consisting of a scintillating crystal or semiconductor material, such as Cadmium-Zinc-Telluride (CZT). The count rate measured on the rear detector is corrected for the shielding effect of the front detector before the count rate ratio is calculated. This is done by multiplying the rear detector count rate by a factor pre-determined from the thickness and density of the front detector for a specific radionuclide energy. The count rate ratio also must be corrected for the presence of background radiation at the target site. This is done by taking a 3 second average of the count rate over tissue that does not contain a radiotracer sequestered at the site of pathology, but in adjacent tissue that is uniformly perfused by a lower level concentration of the radiotracer circulating in the blood pool background.
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4.发明授权公开(公告)号：US11555688B2
公开(公告)日：2023-01-17
申请号：US16614649
申请日：2018-05-03
发明人： Markus Dietrich
摘要： A device having two mutually spaced sensor loops is provided. The device includes a magnetostrictive sensor structure coupled to a plurality of transmitters and a plurality of receivers, and along which a magnet that is secured to the rotating component moves. Each sensor loop has a shape corresponding to a rotating direction of the rotating component. Two saturation zones are in both sensor loops. Each transmitting element is provided for simultaneously coupling two current pulses in opposite direction into one respective sensor loop. Each receiving element is positioned to receive a reflected pulse by the magnet at the respective saturation zone. The receiving elements are connected to evaluation electronics configured to for determine an angular position of the rotating component based on transit times for the current pulse to travel along the respective sensor loop from the respective transmitting element to the respective saturation zone and for each reflected pulse to travel along the respective sensor loop from the respective saturation zone to the respective receiving element.
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5.发明申请公开(公告)号：US20220412779A1
公开(公告)日：2022-12-29
申请号：US17360079
申请日：2021-06-28
摘要： A rotation sensor system includes a rotatable target object configured to rotate about a rotational axis in a rotation direction; a first millimeter-wave (mm-wave) metamaterial track coupled to the rotatable target object, where the first mm-wave metamaterial track is arranged around the rotational axis, and where the first mm-wave metamaterial track includes a first array of elementary structures having at least one first characteristic that changes around a perimeter of the first mm-wave metamaterial track; at least one transmitter configured to transmit a first electro-magnetic transmit signal towards the first mm-wave metamaterial track, where the first mm-wave metamaterial track converts the first electro-magnetic transmit signal into a first electro-magnetic receive signal; at least one receiver configured to receive the first electro-magnetic receive signal; and at least one processor configured to determine a rotational parameter of the rotatable target object based on the received first electro-magnetic receive signal.
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公开(公告)号：US20220187106A1
公开(公告)日：2022-06-16
申请号：US17122687
申请日：2020-12-15
申请人： Caterpillar Inc.
摘要： Systems, assemblies, and methods can involve a retainer assembly adapted to interface with a sensor rod of an in-cylinder position sensor assembly of a fluid cylinder. The retainer assembly can comprise an annular body that defines a bore extending from a first end of the annular body to a second end of the annular body opposite the first end; a sleeve disposed in the bore at an inner wall of the annular body; and one or more magnets fixedly provided between the annular body and the sleeve in a radial direction of the annular body. Each of the one or more magnets may be fixedly molded in place between the annular body and the sleeve in the radial direction of the annular body.
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公开(公告)号：US10775197B2
公开(公告)日：2020-09-15
申请号：US16119373
申请日：2018-08-31
发明人： Yoshihiko Fuji , Keiju Yamada , Kei Masunishi , Michiko Hara , Yoshihiro Higashi , Kazuaki Oakamoto , Shiori Kaji
摘要： According to one embodiment, a sensor includes a sensing element portion and a first magnetic portion. The sensing element portion includes a supporter, a deformable film portion supported by the supporter, and a first element including a magnetic layer and being provided at the film portion. The first magnetic portion is separated from the sensing element portion. The first magnetic portion includes a plurality of first holes. A width of one of the plurality of first holes along a second direction is narrower than a length of the sensing element portion along the second direction and wider than a length of the first element along the second direction. The second direction crosses a first direction from the film portion toward the first element.
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公开(公告)号：US20180147899A1
公开(公告)日：2018-05-31
申请号：US15576597
申请日：2016-05-25
发明人： Yasuhisa TSUJITA
摘要： When receiving a transmission signal, a reception controller obtains a pulse count value of each of rotation sensor units. Next, the reception controller compares, with a threshold, the difference between the obtained pulse count value and a previously obtained pulse count value. The reception controller identifies, based on the result of comparison between the difference between pulse count values and the threshold, the positions of wheel assemblies, in each of which a transmitter is provided.
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9.发明申请公开(公告)号：US20180128655A1
公开(公告)日：2018-05-10
申请号：US15695076
申请日：2017-09-05
申请人： BALLUFF GmbH
发明人： Torsten Beutler
IPC分类号： G01D5/48
CPC分类号： G01D5/485
摘要： A magnetostrictive path-measuring device is provided, comprising a plurality of measuring sections, each having an extent in a longitudinal direction and being arranged parallel to one another at least in a measuring region, at least one magnetic position indicator which is coupled contactlessly to the measuring sections, a start signal application device by means of which start signals are providable to the measuring sections for the generation of excitation current pulses, and an evaluating device by means of which the position of the position indicator on the measuring sections is determinable by a transit time measurement of mechanical waves, wherein the start signal application device comprises a time control device which directs that in a measuring cycle, start signals are provided to different measuring sections at defined different time points.
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公开(公告)号：US20180087934A1
公开(公告)日：2018-03-29
申请号：US15717177
申请日：2017-09-27
申请人： SICK ATECH GMBH
发明人： SAIFUL ISLAM AHMAD
IPC分类号： G01D5/48
摘要： A position sensor comprises a waveguide of magnetostrictive material which extends along a measurement path and which is configured for conducting mechanical pulses triggered by magnetostriction. A transducer at a first end of the waveguide serves for coupling a current pulse into the waveguide and for detecting a mechanical pulse conducted by the waveguide in the direction of the transducer. A damping element of an elastomer material is provided at a second end of the waveguide for damping a mechanical pulse propagating in the direction of the second end, wherein the hardness of the elastomer material increases as the distance from the transducer increases. The invention furthermore relates to a method of manufacturing a damping element of such a position sensor.
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