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公开(公告)号：US11493566B2
公开(公告)日：2022-11-08
申请号：US16328839
申请日：2017-09-06
发明人： Shelby Lacouture
摘要： An electric current imaging system, device, and method includes an array of vector magnetometers that senses one or more magnetic fields in three directions produced by a flow of electric current. Such a system (and devices and methods thereof) can further include a display that displays a visual reconstruction of the original electric current that produced the magnetic field(s). The disclosed embodiments image electric current flow (both magnitude and direction) without the need for rastering or relative motion between the sensors and the conductor/device being viewed. Such embodiments can be scaled to fit both large and small applications by using discreet devices or manufacturing a single, miniaturized array with MEMS technologies.
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公开(公告)号：US11493379B2
公开(公告)日：2022-11-08
申请号：US16608563
申请日：2018-04-09
申请人： Augury Systems Ltd.
发明人： Saar Yoskovitz , Gal Shaul , Ori Negri , Eduard Rudyk , Gal Ben-Haim
摘要： A system for monitoring at least one machine including a plurality of magnetic sensors synchronously sensing magnetic fields emitted by at least one machine, along a corresponding plurality of channels and outputting magnetic field emission signals corresponding to the magnetic fields, a signal analyzer receiving at least a portion of the magnetic field emission signals, performing analysis thereof, and providing an output based on the analysis, the output including at least an indication of a condition of the at least one machine, and a control module receiving the indication of the condition and initiating at least one of a repair event on the at least one machine, an adjustment to a maintenance schedule of the at least one machine and an adjustment to an operating parameter of the at least one machine based on the indication, whereby efficacy of the at least one machine is improved.
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公开(公告)号：US20220342009A1
公开(公告)日：2022-10-27
申请号：US17520745
申请日：2021-11-08
发明人： Kaixin YUAN , Aiming DU , Ying ZHANG , Lin ZHAO , Shuquan SUN , Xiao FENG , Zhi LI
摘要： An offset data acquisition method and device of a fluxgate magnetometer are provided by the present disclosure, wherein the offset data acquisition method of the fluxgate magnetometer comprises: controlling the first analog switch, the second analog switch and the third analog switch to change directions within a preset period to obtain eight switch direction combinations between the first analog switch, the second analog switch and the third analog switch; acquiring magnetic field measurement data corresponding to an each of the switch direction combinations; and the magnetic field measurement data comprises x-axis magnetic field measurement data, y-axis magnetic field measurement data and z-axis magnetic field measurement data; and acquiring the offset data based on influence factors of an offset and the magnetic field measurement data within the preset period.
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公开(公告)号：US11482090B2
公开(公告)日：2022-10-25
申请号：US16786403
申请日：2020-02-10
发明人： Brandon Hunt
IPC分类号： G08B13/24 , G08B13/08 , G01R33/07 , G01B7/14 , G01R33/00 , G01R33/02 , G08B21/22 , G08B29/20
摘要： Described is a security sensor comprising two or more sub-sensors for use in a variety of installations where different magnetic fields may be experienced by the security sensor as a result of the variety of installations. One of the sub-sensors may have a low magnetic sensitivity while the other sub-sensor may have a much higher sensitivity to magnetic fields. In operation, one or both sub-sensors are used to determine if a door or a window has been opened.
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公开(公告)号：US11473936B2
公开(公告)日：2022-10-18
申请号：US16787455
申请日：2020-02-11
申请人： TDK CORPORATION
IPC分类号： G01D5/16 , G01D5/14 , G06F3/0354 , G06F3/0338 , G06F3/038 , G01R33/00 , G01R33/02 , G01R33/09
摘要： A signal processing circuit processes first to third detection signals output from a magnetic sensor device. The signal processing circuit includes a sphere information generation section that performs first processing and a determination section that performs second processing. With a set of values of the first to third detection signals at a certain timing taken as measurement data and with coordinates that represent the measurement data in an orthogonal coordinate system taken as a measurement point, the first processing includes determining center coordinates of a virtual sphere having a spherical surface approximating the distribution of a plurality of measurement data. The second processing includes determining whether four or more pieces of measurement data are suitable for use in the first processing.
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公开(公告)号：US11473911B2
公开(公告)日：2022-10-18
申请号：US16758862
申请日：2018-10-26
发明人： Ben Eitel , Daniel Schneider , Mark Veltman
摘要： A heading determination device comprises data input circuitry configured to obtain magnetic field sensor data sensed by a magnetic field sensor in sensor coordinates, position input circuitry configured to obtain a position estimate of the magnetic field sensor, and estimation circuitry configured to derive, from a magnetic map, a local azimuth distortion value in a reference coordinate system at the current position of the magnetic field sensor indicated by the obtained position estimate and to estimate the heading of the magnetic field sensor in the reference coordinate system based on the obtained magnetic field sensor data and the derived local azimuth distortion value.
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公开(公告)号：US20220327907A1
公开(公告)日：2022-10-13
申请号：US17847934
申请日：2022-06-23
摘要： An electric utility meter including a Hall Effect sensor configured to sense a magnetic field proximate the electric utility meter. The electric utility meter also includes a controller having an electronic processor, the controller configured to receive a signal indicative of a magnitude of the magnetic field proximate the electric utility meter from the sensor, determine whether the magnitude of the magnetic field exceeds a first magnitude threshold and whether a threshold flag has been set, set the threshold flag when the threshold flag has not been set and the magnitude exceeds the first magnitude threshold, determine an amount of time for which the magnitude has exceeded the first magnitude threshold when the threshold flag has been set, and generate an alert indicative of a magnetic tamper event when the amount of time exceeds a time threshold.
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公开(公告)号：US11454612B1
公开(公告)日：2022-09-27
申请号：US17687566
申请日：2022-03-04
申请人： SMARTINSIDE AI Inc.
发明人： Seung Hee Park , Han Sun Kim
摘要： Disclosed herein is a system for inspecting equipment and materials for quality. The system for inspecting equipment and materials for quality includes: a magnetic sensor configured to generate a magnetic field in an inspection target object, and to detect magnetic flux density; and a quality inspection server configured to determine the presence of a defect, a portion where the detect is present, and the type of defect for the inspection target object based on magnetic flux density waveforms over a range from one end of the inspection target object to the other end thereof that are generated via signals detected by the magnetic sensor.
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公开(公告)号：US11435414B2
公开(公告)日：2022-09-06
申请号：US16696074
申请日：2019-11-26
发明人： Juergen Zimmer , Konrad Kapser
IPC分类号： G01R33/02 , G01R33/09 , G01R33/025
摘要： A magnetic field sensor for detecting a direction of a magnetic field comprises an xMR sensor designed to produce an xMR sine signal and an xMR cosine signal based on the magnetic field, and an AMR sensor designed to produce an AMR sine signal and/or an AMR cosine signal based on the magnetic field. A processing circuit is designed to determine the direction of the magnetic field using the xMR sine signal, the xMR cosine signal, a first phase difference between the xMR sine signal and the AMR sine signal or the AMR cosine signal, and a second phase difference between the xMR cosine signal and the AMR sine signal or the AMR cosine signal.
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公开(公告)号：US11421975B2
公开(公告)日：2022-08-23
申请号：US17183462
申请日：2021-02-24
申请人： Balluff GmbH
发明人： Zoltan Kantor , Attila Szabó , Kolos Károly
摘要： A sensor arrangement for an absolute measuring position detection system based on a magnetic code object has a substantially linear arrangement of magnetic field sensors, wherein a bit pattern encoded on a single-track magnetic code object having a uniform bit length is readable by the magnetic field sensors. In the case of a position detection system having the sensor arrangement, the values of magnetic bits are detected in the range of a detected bit sequence and the position of each 0→1 and 1→0 bit transition along a longitudinal axis of a code object is determined from the detected bit values.
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