METHOD AND SYSTEM FOR CALIBRATING SENSORS

    公开(公告)号:US20210364579A1

    公开(公告)日:2021-11-25

    申请号:US17273457

    申请日:2019-09-05

    申请人: Sword Health S.A.

    IPC分类号: G01R33/00 H04Q9/00 G01R33/02

    摘要: A method (100) for calibrating a plurality of sensors (21-24) each comprising a magnetometer (31), a gyroscope (32) and an accelerometer (33), the method comprising: providing (111) a first device (10) comprising at least one cavity (15-18) adapted for introduction of one or more sensors (21-24); introducing (112) each sensor of the plurality of sensors (21-24) into the first device (10); transmitting (113), from each sensor of the plurality of sensors (21-24) to a computing apparatus (40), a first measure corresponding to the respective magnetometer (31); determining (114), the computing apparatus (40), whether differences between the first measure of each sensor and the first measure of the other sensors of the plurality of sensors (21-24) are lower than a predetermined threshold; and calibrating (115) the plurality of sensors (21-24), if at least one of the differences between the first measures is equal to or greater than the predetermined threshold, by rotating the first device (10) or a second device (10) with the plurality of sensors (21-24) introduced therein, the second device comprising at least one cavity (15-18) adapted for introduction of one or more sensors (21-24). Also, a system (5) for calibrating a plurality of sensors (21-24).

    Sensor devices and methods for producing sensor devices

    公开(公告)号:US11150260B2

    公开(公告)日:2021-10-19

    申请号:US16428135

    申请日:2019-05-31

    发明人: Gernot Binder

    IPC分类号: G01R33/02 G01P3/44

    摘要: A sensor device comprises a magnet having a magnetization in a first direction. Furthermore, the sensor device comprises a differential magnetic field sensor arranged on the magnet and having a first sensor element and a second sensor element, wherein the sensor elements are spaced apart in a second direction perpendicular to the first direction. The first sensor element and the second sensor element are designed to detect a magnetic field component in a third direction perpendicular to the first direction and perpendicular to the second direction.

    MULTI-PATH POSITIONING SIGNAL DETERMINATION

    公开(公告)号:US20210314734A1

    公开(公告)日:2021-10-07

    申请号:US16841726

    申请日:2020-04-07

    摘要: A UE includes: at least one sensor configured to provide at least one sensor measurement; and a processor configured to: determine first and second ranges between the UE and a positioning signal source based on first and second positioning signal measurements of first and second positioning signals from the positioning signal source corresponding to first and second times; determine whether a selected range of the first range or the second range is a multipath range based on the first range, the second range, and movement of the UE between the first time and the second time indicated by the at least one sensor measurement; and discount use of the selected range in a positioning technique in response to the selected range being determined to be a multipath range.

    Semiconductor sensor structure
    95.
    发明授权

    公开(公告)号:US11125838B2

    公开(公告)日:2021-09-21

    申请号:US16742446

    申请日:2020-01-14

    申请人: TDK-MICRONAS GMBH

    IPC分类号: G01R33/07 G01R33/00 G01R33/02

    摘要: A semiconductor sensor structure is provided which has a top side and a bottom side and includes a first semiconductor wafer, a second semiconductor wafer, and an insulating layer. The second semiconductor wafer includes a substrate layer having an integrated circuit, formed on the front side, with at least one metal terminal contact formed on the front side. The front side of the second semiconductor wafer and a front side of the first semiconductor wafer are each formed on the insulating layer. The first semiconductor wafer has a semiconductor layer with a three-dimensional Hall sensor structure having a sensor area formed of a monolithic semiconductor body and extending from the backside to the front side of the semiconductor layer. At least three mutually spaced apart first metal terminal contacts are on the front side and at least three mutually spaced apart second metal terminal contacts are on the backside.

    MAGNETOMETER AND METHOD OF DETECTING A MAGNETIC FIELD

    公开(公告)号:US20210255254A1

    公开(公告)日:2021-08-19

    申请号:US17251580

    申请日:2019-06-13

    申请人: UCL BUSINESS LTD

    IPC分类号: G01R33/02

    摘要: The disclosure concerns a magnetometer for detecting a magnetic field, comprising: a solid state electronic spin system containing a plurality of electronic spins and a solid carrier, wherein the electronic spins are configured to be capable of aligning with an external magnetic field in response to an alignment stimulus; and a detector configured to detect an alignment response of the electronic spins, such that the external magnetic field can be detected; wherein the electronic spins are provided as one or more groups, each group containing a plurality of spins, the plurality of spins in each of the one or more groups being arranged in a line that is angled at an angle Θ with respect to the local direction of the external magnetic field at the said group. Also disclosed is a method for detecting a magnetic field.

    Wireless Radio Frequency Triggered Signal Acquisition Device

    公开(公告)号:US20210212588A1

    公开(公告)日:2021-07-15

    申请号:US17055642

    申请日:2019-06-05

    摘要: A wireless radio frequency triggered signal acquisition device includes three orthogonal pick up coils in which voltages will be induced by a time varying, spatially varying magnetic field inside a chamber of an MRI scanner. A radio frequency detection circuit detects radio frequency pulses emitted by an MRI scanner and a wireless transmission circuit transmits data from the device, A 3-axis magnetometer is used for measuring magnetic flux in the chamber of the MRI scanner. A processor uses the detected radio frequency pulses to synchronize measurements taken by the magnetometer and pick-up coils to a time frame of a gradient driver hardware, thereby matching the measurements to a pulse sequence waveform. The processor further combines measurements of induced voltages in the orthogonal pick up coils and the magnetic flux with the pulse sequence waveform in order to solve for the instantaneous position and orientation of the device.

    Current sensor
    99.
    发明授权

    公开(公告)号:US11041887B2

    公开(公告)日:2021-06-22

    申请号:US16425056

    申请日:2019-05-29

    申请人: DENSO CORPORATION

    IPC分类号: G01R15/20 G01R19/00 G01R33/02

    摘要: A current sensor, which is configured to individually detect a current flowing in each of at least two current paths, includes at least two phases. Each phase includes a magnetic field detection element and a pair of first magnetic shield and second magnetic shield. The magnetic field detection element is disposed to face one of the current paths. The magnetic field detection element is configured to detect a magnetic field generated from the one of the current paths and to convert the detected magnetic field into an electric signal. The first magnetic shield and the second magnetic shield are disposed to face each other with the current path and the magnetic field detection element interposed between the first magnetic shield and the second magnetic shield. The first magnetic shield and the second magnetic shield are configured to shield the magnetic field detection element from an external magnetic field.

    Coil arrangement for sample measurement with a spatially variable magnetic field

    公开(公告)号:US11041828B2

    公开(公告)日:2021-06-22

    申请号:US15127021

    申请日:2015-03-20

    发明人: Markus Savonen

    摘要: The invention relates to a measuring arrangement comprising: a coil arrangement for creating a magnetic field to measure a sample to be arranged in connection with it including at least one flat coil, the coil geometry of which is arranged to be changed in the direction of the plane defined by the coil arrangement, in order to create a spatially changing magnetic field having a known distance dependence for measuring the sample; and electronics connected to the coil arrangement for creating a magnetic field using the coil arrangement; and means for changing the position of the sample and the coil arrangement relative to each other in order to change the magnetic field affecting the sample and having the known distance dependence. In addition, the invention also relates to a method for measuring a sample.