专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20220341736A1 DIRECTION CALCULATION APPARATUS, DIRECTION CALCULATION METHOD, AND PROGRAM 有权
公开(公告)号：US20220341736A1
公开(公告)日：2022-10-27
申请号：US17762716
申请日：2019-09-27
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Hiroaki GOMI , Ryoma TANASE
IPC分类号： G01C21/08 , G01C21/00
摘要： Provided is a technique for more accurately calculating a direction to be presented to a guided person using a force sensation presentation device gripped by the guided person, taking into account geomagnetic distortion. A direction calculation apparatus includes a presented direction calculation unit that uses a geomagnetic map including a geomagnetic vector and a gravitational acceleration vector of a reference posture of the force sensation presentation device in a reference coordinate system at a position included in a predetermined range, and uses a first matrix composed of a geomagnetic vector, a gravitational acceleration vector, and an outer product vector of these vectors of the reference posture of the force sensation presentation device in the reference coordinate system at a current position of the force sensation presentation device as well as a second matrix composed of a geomagnetic vector, a gravitational acceleration vector, and an outer product vector of these vectors at a current posture of the force sensation presentation device in the reference coordinate system at the current position of the force sensation presentation device, to calculate, from an instructed force sensation vector in a reference coordinate system indicating a direction to be instructed to the force sensation presentation device, an instructed force sensation vector in a force sensation presentation device coordinate system indicating a direction to be instructed to the force sensation presentation device.

2. 发明申请

US20220136832A1 METHOD AND SYSTEM FOR MAGNETIC-BASED COLLABORATIVE POSITIONING 有权
公开(公告)号：US20220136832A1
公开(公告)日：2022-05-05
申请号：US17512301
申请日：2021-10-27
申请人： INVENSENSE, INC.
发明人： Gennadii Berkovich , Dmitry Churikov , Iurii Kotik , Vladimir Pentiukhov , Christopher Goodall
IPC分类号： G01C21/00 , G01C21/08 , G01C21/20 , G01C21/16
摘要： Magnetic-based collaborative positioning of a portable device involves obtaining magnetic field measurements for the portable device, obtaining magnetic fingerprint map information, obtaining parameters of motion of the portable device, obtaining collaborative assistance data from at least one neighbor portable device and determining position of the portable device based on the obtained magnetic field measurements, the obtained magnetic map information, the obtained motion parameters and the obtained collaborative assistance data.

3. 发明申请

US20210306811A1 Method and system for determining a direction of movement of an object 有权
公开(公告)号：US20210306811A1
公开(公告)日：2021-09-30
申请号：US17343913
申请日：2021-06-10
申请人： Amer Sports Digital Services Oy
发明人： Tuomas Hapola , Heikki Nieminen , Mikko Martikka , Erik Lindman , Olli-Pekka Koistinen
IPC分类号： H04W4/029 , G16H20/30 , G07C1/22 , H04W4/02 , A63B24/00 , G01C17/28 , G01C21/08 , G01C21/18
摘要： According to an example aspect of the present invention, there is provided a method and system for tracking and determining a position of an object along a planned route, the method comprising: providing information of at least one predetermined route and determining a planned route based on the information of the at least one predetermined route; determining a primary position of the object based on at least one of: signals received from a satellite positioning system and the planned route; tracking a first position of the object via the satellite positioning system; and comparing whether the first position matches with the planned route. If the first position is found to deviate from the planned route, determining a secondary position of movement of the object based on measurements of at least one of: an inertia sensor and an acceleration sensor; wherein at least one of acceleration, speed and direction of the object is measured. Determining the secondary position indication of the object based on the first position and the secondary position of movement of the object; comparing whether the secondary position indication matches with at least one of: the planned route and the at least one predetermined route, and determining the current position of the object based on: at least one of: the at least one predetermined route and the planned route; and at least one of: the first position and the secondary position indication.

4. 发明授权

US11073397B2 Magnetic-inertial global positioning system 有权
公开(公告)号：US11073397B2
公开(公告)日：2021-07-27
申请号：US16273845
申请日：2019-02-12
申请人： Michael S. Larsen
发明人： Michael S. Larsen
IPC分类号： G01C21/16 , G01C21/02 , G01C21/08
摘要： One example includes a magnetic-inertial global positioning system mounted on a platform. The system includes an inertial system configured to determine an approximate latitude associated with an approximate global position of the global positioning system. The system also includes a magnetometer system configured to determine an ambient magnetic field at the approximate global position. The system further includes a location processor configured to compare the ambient magnetic field with a predetermined magnetic field profile to determine an approximate longitude along the determined approximate latitude to determine the approximate global position of the platform.

5. 发明申请

US20200257249A1 ELECTRONIC WATCH 审中-公开
公开(公告)号：US20200257249A1
公开(公告)日：2020-08-13
申请号：US16787382
申请日：2020-02-11
申请人： SEIKO EPSON CORPORATION
发明人： Toshiyuki NOZAWA
IPC分类号： G04B47/06 , G04G21/02 , G01C21/08
摘要： An electronic watch includes a navigation processor that perform navigation processing of causing a positioning processor to perform positioning processing, and calculating a distance to a destination based on current position information acquired by the positioning processing and destination position information, and also calculating a direction of the destination based on current position information, geomagnetism, and destination position information, and moreover causing a display unit to display the direction of the destination, and an operation device configured to case the navigation processor to start navigation processing when a predetermined operation is performed. The navigation processor performs, when the distance is longer than a preset threshold, the navigation processing at a first frequency during a predetermined time after predetermined operation is performed, and performs, when the distance is shorter than or equal to a preset threshold, the navigation processing at a second frequency higher than first frequency during the predetermined time.

6. 发明授权

US10708723B2 Method and system for determining a direction of movement of an object 有权
公开(公告)号：US10708723B2
公开(公告)日：2020-07-07
申请号：US16693416
申请日：2019-11-25
申请人： Amer Sports Digital Services Oy
发明人： Tuomas Hapola , Heikki Nieminen , Mikko Martikka , Erik Lindman
IPC分类号： A63B24/00 , H04W4/02 , H04W4/029 , G01C21/18 , G01C21/08 , G01C17/28 , G07C1/22 , G16H20/30
摘要： According to an example aspect of the present invention, there is provided a method for determining the direction of movement of an object, the method comprising determining a cyclical motion of a cyclically moving part of the object by recording acceleration data of said cyclically moving part over a plurality of cycles using an accelerometer or inertial sensor attached to said cyclically moving part, integrating said acceleration data over at least one cycle of movement to determine a tilting of said cyclically moving part of the object relative to the horizontal plane, measuring an external magnetic field of said cyclically moving part of the object using a magnetometer to determine an orientation of said cyclically moving part of the object relative to the external magnetic field, determining the direction of movement of the object based on the tilting and the orientation of the cyclically moving part of the object.

7. 发明授权

US10697795B2 Automatic heading correction for directional gyroscopes 有权
公开(公告)号：US10697795B2
公开(公告)日：2020-06-30
申请号：US15894871
申请日：2018-02-12
申请人： Bell Textron Inc.
发明人： Erik John Oltheten , Aaron Thomas Halverson
IPC分类号： G01C23/00 , G01S19/40 , G01C21/08 , G01C21/16 , B64D43/00 , G01C25/00 , G01C19/42
摘要： A navigation system for vehicles, such as rotorcraft, includes a directional gyroscope having a magnetic heading correction mode, a nonmagnetic manual heading correction mode and a nonmagnetic automatic heading correction mode. A magnetic field sensor is operably coupled to the directional gyroscope and is operable to generate magnetic north-based signals. A heading correction input is operably coupled to the directional gyroscope and is operable to generate manual signals upon actuation thereof. A global positioning system sensor is operably coupled to the directional gyroscope and is operable to generate track-based signals. In the magnetic heading correction mode, the directional gyroscope receives the magnetic north-based signals for heading corrections. In the nonmagnetic manual heading correction mode, the directional gyroscope receives the manual signals for heading corrections. In the nonmagnetic automatic heading correction mode, the directional gyroscope periodically receives the track-based signals for heading corrections.

8. 发明申请

US20200166343A1 METHOD AND DEVICE FOR MAGNETIC FIELD MEASUREMENT BY MAGNETOMETERS 审中-公开
公开(公告)号：US20200166343A1
公开(公告)日：2020-05-28
申请号：US16632284
申请日：2018-07-19
申请人： SYSNAV
发明人： David VISSIERE , Mathieu HILLION
IPC分类号： G01C21/08 , G01R33/02
摘要： The invention relates to a magnetic field measurement by a set of magnetometers (20) which are linked to a same moveable support and which have different orientations of eigendirections with respect to this support. The processing means implement, during a measurement in a given position and orientation of the support and of the set of magnetometers, a determination, for each magnetometer, of the orientation deviation between the eigendirections of the magnetometer and the “candidate” magnetic field, a determination of the magnetometer for which this deviation is minimal, the magnetic field measured by this sensor being selected as the magnetic field measured by the set of magnetometers. The magnetometers (20) are distributed in space in order to cover a maximum of different orientations.

9. 发明授权

US10655983B2 Method for calibrating aircraft tri-axial balance and device thereof 有权
公开(公告)号：US10655983B2
公开(公告)日：2020-05-19
申请号：US15854793
申请日：2017-12-27
申请人： Haoxiang Electric Energy (Kunshan) Co., Ltd.
发明人： Yu Tian , Wenyan Jiang
IPC分类号： B64C39/02 , G01C25/00 , G01C21/08 , G01C17/38
摘要： A method for calibrating aircraft tri-axial balance include steps of: receiving a first indicator signal; tumbling an aircraft by 360 degrees by specified times according to the first indicator signal; collecting and recording first geomagnetic data; receiving a second indicator signal; rotating the aircraft laterally by 360 degrees by the specified times according to the second indicator signal; collecting and recording second geomagnetic data; receiving a third indicator signal; rotating the aircraft horizontally by 360 degrees by the specified times according to the third indicator signal; collecting and recording third geomagnetic data; and obtaining a calibrated geomagnetic curve according to the first geomagnetic data, the second geomagnetic data and the third geomagnetic data. The method and the device for calibrating the aircraft tri-axial balance according to an embodiment of the present invention are able to fully calibrate geomagnetic sensors of the aircraft and better eliminate interference of the geomagnetic sensors.

10. 发明授权

US10648812B2 Method for filtering the signals arising from a sensor assembly comprising at least one sensor for measuring a vector physical field which is substantially constant over time and in space in a reference frame 有权
公开(公告)号：US10648812B2
公开(公告)日：2020-05-12
申请号：US15445777
申请日：2017-02-28
申请人： MOVEA
发明人： Joe Youssef
IPC分类号： G01C19/5776 , G01C17/38 , G01C21/16 , G01C21/08
摘要： A method for filtering the signals arising from a sensor assembly (EC) comprising at least one measurement sensor for measuring a vector physical field which is substantially constant over time and in space in a reference frame, said sensor assembly (EC) being tied in motion to a moving frame, moving in the reference frame, the method comprising the steps consisting in: applying a first transformation (T1) to the measurements of a measurement sensor of the sensor assembly (EC) which are provided in the moving frame, to a pseudo reference frame, with the aid of a first change-of-frame operator (R(t)) by rotation between the moving frame and the pseudo reference frame; and applying a filtering (FILT) to the measurements thus transformed in the pseudo reference frame; and applying a second transformation (T2), the inverse of said first transformation, to the measurements filtered by said filtering (FILT), from the reference frame to the moving frame, with the aid of a second change-of-frame operator (R−1(t)) by rotation between the pseudo reference frame and the moving frame, the inverse of said first operator (R(t)).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式