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1.发明申请公开(公告)号：US20250060446A1
公开(公告)日：2025-02-20
申请号：US18720998
申请日：2022-12-13
Applicant: SAFRAN ELECTRONICS & DEFENSE
Inventor： Pierre-Antoine GARCIA , Arnaud LILBERT , Alain Michel CHIODINI
Abstract: The invention relates to a method for estimating the direction of arrival of an electromagnetic wave at an antenna array (2), comprising the steps of: —estimating (202) a covariance matrix of signals acquired by the antenna array (2); —calculating (204) a normalised eigenvector of the covariance matrix; —correlating (205) the normalised eigenvector with a first reference table and a second reference table so as to produce a first correlation spectrum and a second correlation spectrum comprising correlation indices associated, respectively, with different directions of arrival; —constructing (312) a third reference table by linear combination of the first reference table and the second reference table with a polarisation component of the electromagnetic wave in the first direction and the second direction, respectively; —correlating (314) the normalised eigenvector with the third reference table so as to produce a third correlation spectrum comprising correlation indices associated with different directions of arrival; —identifying (316) a direction of arrival associated with a maximum correlation index of the third correlation spectrum.
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2.发明授权公开(公告)号：US12227302B2
公开(公告)日：2025-02-18
申请号：US17783509
申请日：2020-12-08
Applicant: SAFRAN ELECTRICAL & POWER , SAFRAN ELECTRONICS & DEFENSE
Inventor： Nicolas Fanton , Serge Thierry Roques , Emmanuel Couturier , Nicolas Paris
Abstract: An autonomous impact detection device includes at least one impact detector; at least one wireless transmission device configured to transmit the information collected by the impact detector; at least one energy storage device configured to supply the impact detector and the wireless transmission device with energy; at least one Seebeck module configured to supply the storage device with energy when a temperature gradient is applied thereto; the wireless transmission device being configured to supply the storage device with energy when the temperature gradient to which the Seebeck module is exposed is not sufficient.
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公开(公告)号：US20250006951A1
公开(公告)日：2025-01-02
申请号：US18688097
申请日：2022-08-22
Applicant: SAFRAN ELECTRONICS & DEFENSE
Inventor： Rémy Hoff
Abstract: This device for managing implementation of a limitation of the value of a current output from non-rechargeable means for storing electrical energy that are intended to power wireless means for transmitting periodically, comprises: —computing means able to determine a current-threshold value depending on a physical quantity; —a current-limiting circuit; —rechargeable means for storing electrical energy, which are coupled to the limiting circuit and are intended to power said data-transmitting means and, —control means able to control the limiting circuit in order to make it perform, for a predetermined time, said limitation only when the value of the current is lower than the threshold value, the limiting circuit being able to deliver the limited current to the rechargeable means for storing electrical energy.
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公开(公告)号：US20240431082A1
公开(公告)日：2024-12-26
申请号：US18705074
申请日：2022-10-28
Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE , UNIVERSITE DE RENNES 1 , SAFRAN ELECTRONICS & DEFENSE
Inventor： Quentin TRICAS , Patrice FOUTREL , Xavier CASTEL , Claire LE PAVEN , Philippe BESNIER
IPC: H05K9/00
Abstract: A self-adaptive shielding device is suitable for a lens or a window of a piece of equipment provided with an electrically conductive enclosure containing an optical or RF sensor. The device includes a shielding screen having a switchable RF shielding mesh of micrometric pitch at least partially surrounded by a border of insulator-metal transition material arranged between the mesh and an electrically conductive envelope. A susceptor element is arranged facing the insulator-metal transition material and transforms incident electromagnetic energy (RFH) into activation heat for the insulator-metal transition material. The susceptor element causes a transition to the conductive state of the insulator-metal transition material under the action of the electromagnetic energy so as to electrically connect the mesh to the electrically conductive envelope when the incident electromagnetic energy exceeds a given threshold.
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公开(公告)号：US20240401982A1
公开(公告)日：2024-12-05
申请号：US18697851
申请日：2022-10-07
Applicant: SAFRAN LANDING SYSTEMS , SAFRAN ELECTRONICS & DEFENSE
Inventor： Blaise LAPÔTRE , Rémy HOFF , Thibaut NESTORET , Arnaud GAPIN , Emmanuel COUTURIER
Abstract: A measuring device has a magnetic circuit with a first and second armature elements that are positioned one on either side of an axis X and are manufactured with at least one ferromagnetic material. A magnet is situated between the armature elements such that a first pole of the magnet is positioned next to the first armature element and such that a second pole of the magnet is positioned next to the second armature element. A rod is arranged to be secured to a target and inserted between the armature elements to slide along the axis X. The rod has a variable section along its length such that a magnetic flux in the magnetic circuit depends on a linear position of the rod along the axis X. At least one sensor is arranged to measure the magnetic flux, which corresponds to the linear position of the target.
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Patent Agency Ranking
公开(公告)号：US20240376937A1
公开(公告)日：2024-11-14
申请号：US18690959
申请日：2022-09-13
Applicant: SAFRAN ELECTRONICS & DEFENSE
Inventor： Bertrand SEVAGEN , Franck ALEXANDRE , Etienne MERLET
IPC: F16D1/112
Abstract: A system couples a driving shaft and a driven shaft in rotation and without play. The driving shaft includes a tubular end with at least one internal longitudinal groove receiving the driven shaft and having at its end a projecting cylindrical transverse pin configured to engage in the groove. A return spring for the pin urges the pin without play against a longitudinal edge of the groove. The spring includes a first helical section for fastening to the driven shaft and threaded by screwing through the pin. A second section of the spring bears on the pin, and a third elastic return section of the spring acts elastically on the second section.
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公开(公告)号：US12140217B2
公开(公告)日：2024-11-12
申请号：US18256827
申请日：2021-12-13
Applicant: SAFRAN , SAFRAN ELECTRONICS & DEFENSE
Inventor： Amadou Assoumane , Mohammed El Badaoui , Badr Mansouri , Audrey Venon
Abstract: A method includes for each of the portions of a guide of the actuator, obtaining an operating signal measured when a movable element of the actuator travels over the guide portion in question, upon each of a plurality of successive activations of the actuator; for each of the guide portions, seeking wear of the actuator from the operating signals obtained for this guide portion; and locating the wear on the guide or on the motor according to the guide portions from which the wear has been found.
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公开(公告)号：US12052527B2
公开(公告)日：2024-07-30
申请号：US17906205
申请日：2021-03-11
Applicant: SAFRAN ELECTRONICS & DEFENSE
Abstract: A method for dating images obtained by at least one camera equipping a vehicle includes acquiring a reference signal including time information and generating a modulated signal in response to the reference signal. The modulated signal has at least one retiming pulse with a retiming period which that is different from a base period of the modulated signal. The method further includes, for each camera, acquiring images at a frequency depending on the frequency of the modulated signal, each image being associated with a timestamp provided by the camera, and determining the time difference between the timestamps of two successive images of the camera. If the time difference determined between said timestamps is different from the base period of the modulated signal, the method assigns a reference date to said images depending on the time information of the reference signal.
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公开(公告)号：US20240241297A1
公开(公告)日：2024-07-18
申请号：US18559404
申请日：2022-05-05
Applicant: SAFRAN ELECTRONICS & DEFENSE
Inventor： Arnaud DAVENEL
IPC: G02B5/20
CPC classification number: G02B5/201
Abstract: A multispectral filter with a filtering array for a sensor with an array of elementary sensors, said filtering array comprising an elementary pattern formed of an arrangement of N elementary cells capable of filtering central wavelengths λ1, . . . , λk, . . . , λN, the position of the central wavelengths in the elementary pattern being determined so that: each wavelength being associated with an integer e1, . . . , ek, . . . , eN, selected so that each of the products e1x λ1, . . . , ekx λk, . . . , eNx λN is substantially constant, each central wavelength λk is positioned at ek positions in the elementary pattern so that the maximum ratio between the distance between two proximal positions of said central wavelength and the associated central wavelength is minimal.
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10.发明授权公开(公告)号：US12014867B2
公开(公告)日：2024-06-18
申请号：US17999181
申请日：2021-05-20
Applicant: SAFRAN ELECTRONICS & DEFENSE
Inventor： François Guillot , Patrice Chetanneau , Pascal Spoor
CPC classification number: H01F38/14 , H01F27/255 , H01F27/2804 , H01F27/2885 , H01F27/363 , H01R13/62 , H04B5/266 , H01F2027/2819 , H01F2038/143
Abstract: A connection system for exchanging electrical signals includes a first symmetrical connector and a second symmetrical connector. Each symmetrical connector has at least one magnetic core provided with at least one turn. The symmetrical connectors are produced in a substrate made of insulating material so as to form a half of a coupling transformer. At least one half of the coupling transformer of each connector is arranged opposite one another so as to be able to exchange a magnetic flux. The electrical signals are emitted by the first connector in the form of a magnetic flux, and the second connector generates the electrical signals on receiving the magnetic flux.
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