Abrégé

The present application provides a waveguide array antenna, comprising a metal plate, a waveguide antenna unit, a waveguide bending structure, a waveguide power divider, and a waveguide transmission line. An accommodating cavity is formed in the metal plate; one end of the waveguide bending structure is connected to the waveguide transmission line, and the other end of the waveguide bending structure extends in the horizontal direction, and is provided with an upward bending part; the waveguide power divider is connected to the upper end of the bending part; the waveguide antenna unit is connected to the upper end of the waveguide power divider.

Classes IPC  ?

• H01Q 1/38 - Forme structurale pour éléments rayonnants, p. ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant

Abrégé

A seat occupancy identification method and a vehicle control method using same. The seat occupancy identification method comprises: sampling each antenna echo signal within a preset area, so as to obtain a time-domain echo signal set, wherein each antenna echo signal within the preset area is an echo signal that is obtained by means of performing detection on the preset area inside a vehicle; for each time-domain echo signal in the time-domain echo signal set, performing one-dimensional FFT processing on the time-domain echo signal, so as to obtain distance information of the time-domain echo signal; and according to the distance information of each time-domain echo signal in the time-domain echo signal set, determining valid echo signal sets respectively corresponding to seat occupancy areas inside the vehicle, and according to the valid echo signal sets respectively corresponding to the seat occupancy areas, respectively determining whether the seat occupancy area are occupied.

Classes IPC  ?

• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01S 3/14 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée
• G01S 13/931 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour prévenir les collisions de véhicules terrestres
• B60R 16/02 - Circuits électriques ou circuits de fluides spécialement adaptés aux véhicules et non prévus ailleursAgencement des éléments des circuits électriques ou des circuits de fluides spécialement adapté aux véhicules et non prévu ailleurs électriques
• B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation
• B60J 7/00 - Toits amoviblesToits avec panneaux mobiles
• B60R 22/48 - Systèmes de commande, alarmes, ou systèmes d'inter-verrouillage, pour assurer une utilisation correcte de la ceinture ou du harnais
• B60Q 9/00 - Agencement ou adaptation des dispositifs de signalisation non prévus dans l'un des groupes principaux
• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06F 17/14 - Transformations de Fourier, de Walsh ou transformations d'espace analogues

Abrégé

A living body detection method, a terminal (4), and a computer readable storage medium. The method is applied to a millimeter-wave radar, and comprises: obtaining distance dimension data of the millimeter-wave radar (S101); intercepting the distance dimension data according to a preset effective distance range, and obtaining a target index corresponding to the maximum peak value in the intercepted data (S102); obtaining, according to the target index, n adjacent distance measurement units centered on a distance measurement unit corresponding to the target index, and sequentially obtaining an amplitude difference between the distance dimension data of each distance measurement unit at a kth time point and a (k-1)th time point in N consecutive time points (S103); performing windowing and fast Fourier transform for the amplitude difference corresponding to any distance measurement unit to obtain a spectrum corresponding to the distance measurement unit (S104); and determining, according to the spectrums corresponding to the n distance measurement units, whether a target exists at an Nth time point (S105). The living body detection method can improve the living body detection precision.

Classes IPC  ?

• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01S 13/04 - Systèmes déterminant la présence d'une cible
• G01S 13/08 - Systèmes pour mesurer la distance uniquement
• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques

Abrégé

A method and apparatus for detecting a living body in a vehicle by means of a radar, and a terminal device. The method comprises: acquiring a time domain echo signal array that is obtained by means of a target radar performing detection on the interior of a target vehicle (S101); converting the time domain echo signal array from a time domain to a frequency domain, and extracting a phase of a frequency domain signal corresponding to each sampling point (S102); performing filtering to extract a first frequency domain signal array corresponding to a target frequency interval (S103); for any sampling point, determining an association confidence level of the sampling point on the basis of a phase of a first frequency domain signal corresponding to the sampling point within each time period (S104); and if the number of sampling points having an association confidence level greater than a first preset threshold value is greater than a first sampling point number, determining that a living body is present in the target vehicle (S105). In the method, on the basis of the characteristic that a living body has regular micro-motion signals, correlation analysis is performed on phases of frequency domain signals within a plurality of time periods, such that regular micro-motion signals can be identified, thereby improving the accuracy of detecting a living body in a vehicle.

Classes IPC  ?

• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques
• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01V 3/12 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant par ondes électromagnétiques

Abrégé

The present application provides a kick signal recognition method and apparatus, a terminal, and a storage medium. The method comprises: acquiring point cloud information of each echo data frame detected by a radar; determining whether the point cloud information satisfies a preset condition, and if the point cloud information satisfies the preset condition, marking the data frame corresponding to the point cloud information; when the number of acquired data frames reaches a preset value n, every time a new data frame is acquired, counting the number of marked data frames in the first n data frames of the newly acquired data frame to obtain a continuously updated quantity sequence; and recognizing kick signals according to the continuously updated quantity sequence. The present application can improve recognition accuracy of the kick signals.

Classes IPC  ?

• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques
• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible

Abrégé

An in-vehicle radar seat occupancy recognition method and apparatus, and a vehicle-mounted radar, being applicable to the technical field of radars. The method comprises: obtaining a region division matrix and a spatial position matrix corresponding to a target vehicle, and a plurality of frames of point cloud data obtained by scanning the interior of the target vehicle by a vehicle-mounted radar (S101); according to the spatial position matrix corresponding to the target vehicle and each frame of point cloud data, counting the number of point clouds falling within each space, so as to obtain a corresponding point cloud counting matrix (S102); according to a segmentation threshold, performing classification and value assignment on elements in each frame of point cloud counting matrix, so as to obtain a first matrix corresponding to each frame of point cloud data (S103); finally, determining the initial centroid position of each frame of point cloud data in the spatial position matrix according to a neighbor clustering method and each frame of first matrix (S104); and according to the initial centroid position, determining a seat occupancy region in the target vehicle (S105). By means of space division, the method can quickly determine an in-vehicle seat occupancy condition according to the number of point clouds of each space, thereby improving an in-vehicle seat occupancy recognition effect.

Classes IPC  ?

• G01S 13/06 - Systèmes déterminant les données relatives à la position d'une cible
• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques

Abrégé

Provided are an in-vehicle life detection method and apparatus, an electronic device, and a computer readable storage medium, which are applicable to to the technical field of intelligent vehicles. The method comprises: obtaining an xth radar frame signal acquired by a preset millimeter wave radar in a vehicle (S110); performing demodulating sampling and time-frequency transformation on the xth radar frame signal, so as to obtain a first distance dimensional signal array (S120); filtering the first distance dimensional signal array, so as to obtain a second distance dimensional signal array (S130); extracting a phase and confidence of a preset detection point from the second distance dimensional signal array (S140); according to a phase and confidence of the preset detection point of an (x-1)th radar frame signal extracted in advance, iteratively filtering the phase and the confidence of the preset detection point of the xth radar frame signal, so as to obtain a filtering result of the preset detection point of the xth radar frame signal (S150); and when the filtering result is greater than a preset threshold, determining that a life exists at the preset detection point (S160). The present method is suitable for in-vehicle life detection in a variety of scenarios, and the detection effect is good.

Classes IPC  ?

• G01S 13/04 - Systèmes déterminant la présence d'une cible
• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques
• B60R 21/015 - Circuits électriques pour déclencher le fonctionnement des dispositions de sécurité en cas d'accident, ou d'accident imminent, de véhicule comportant des moyens pour détecter la présence ou la position des passagers, des sièges des passagers ou des sièges pour enfants, p. ex. pour mettre hors service le déclenchement

Abrégé

A bright/dark pattern such as a checkered pattern is projected to a region to be monitored. The pattern is imaged time-sequentially. A difference between images at different time moments is acquired to generate a differential image. The differential image has a 0 value when no motion occurs in the region to be monitored. If any object moves in the region to be monitored, a differential image remains in a contour of the object which has moved. A flat feature is extracted from the contour and the position. According to the bright/dark pattern imaged in the contour and distorted by the existence of the object, a height of the object is detected.

Classes IPC  ?

• G08B 25/04 - Systèmes d'alarme dans lesquels l'emplacement du lieu où existe la condition déclenchant l'alarme est signalé à une station centrale, p. ex. systèmes télégraphiques d'incendie ou de police caractérisés par le moyen de transmission utilisant une ligne de signalisation unique, p. ex. en boucle fermée
• G06T 1/00 - Traitement de données d'image, d'application générale
• G08B 25/00 - Systèmes d'alarme dans lesquels l'emplacement du lieu où existe la condition déclenchant l'alarme est signalé à une station centrale, p. ex. systèmes télégraphiques d'incendie ou de police

Abrégé

A snap action switch (21) having a common fixed terminal (27), a movable terminal (38) connected to the common fixed terminal (27) and having movable contacts (39, 40), a normally closed fixed terminal (28) having a normally closed contact (33) normally connected to the movable contacts (39, 40), a normally open fixed terminal (29) provided at a position facing the normally closed contact (33) and having a normally open contact (34) connectable to the movable contacts (39, 40), and an urging member (43) for urging, in the region beyond a predetermined position, the movable terminal (38) to an opposite direction. At least either one of the normally closed contact (33) and the normally open contact (34) and the movable contacts (39, 40) can be in sliding contact with each other.

Classes IPC  ?

• H01H 13/30 - Dispositions à action brusque consécutive à la déformation d'éléments élastiques utilisant la compression ou l'extension de ressorts à boudin une extrémité du ressort transmet le mouvement à l'élément de contact lorsque l'autre extrémité est mue par l'organe moteur
• H01H 13/52 - Interrupteurs ayant un organe moteur à mouvement rectiligne ou des organes adaptés pour pousser ou tirer dans une seule direction, p. ex. interrupteur à bouton-poussoir ayant un seul élément d'actionnement le contact retournant immédiatement à son état initial après suppression de la force motrice, p. ex. bouton-poussoir de sonnerie

Abrégé

[PROBLEMS] To automatically correct and eliminate frequently occurring rattling of a table having adjusters and to make the table smoothly movable. [MEANS FOR SOLVING THE PROBLEMS] Viscoelastic bodies are mounted on all table legs having conventional adjusters. The load of the table on the viscoelastic bodies from the upper side and the floor surface pressure thereon from the lower side are sensed by the adjusters. The all legs are brought into contact with the floor surface by the extension and retraction of the viscoelastic bodies. As a result, rattling of the table can be automatically and instantaneously eliminated.

Classes IPC  ?

• A47B 9/00 - Tables à plateaux de hauteur variable
• A47B 91/16 - Pieds assurant automatiquement la mise à niveau