Abstract: A bilayer photonic crystal photoswitch thin-film device having the optical characteristics of both 2D and 3D photonic crystals, and a preparation method thereof are provided. When the bilayer photonic crystal photoswitch thin-film device is rotated periodically, different colors can be observed at a fixed rotation angle, that is, the device has the attribute of changing colors by means of rotation, and can thus realize the opening and closing of an optical path. The bilayer photonic crystal photoswitch thin-film new device has broad application prospects in the fields of photoswitches, optical waveguides, optical prisms, warming signs, anti-counterfeiting and information coding, etc.

Abstract: A skin audible watch for orientation identification includes a dial (1) and a strap (2). A plurality of sound collection modules (3) are arranged along a circumference of the dial (1), and the sound collection modules (3) are sequentially connected with a digital filter (4), an analog-to-digital converter (5), a single-chip microcomputer (6), and a row and column drive module (7); the single-chip microcomputer (6) is also connected with vibration motors (8) and a gyroscope (9); a number of the vibration motors corresponds to a number of orientations; the digital filter (4), analog-to-digital converter, single-chip microcomputer, row and column drive module, the vibration motors and the gyroscope are located inside the dial; the row and column drive module is connected with a current contact pin (12), and a free end of the current contact pin extends out of a surface of the vibration motors.

Abstract: An intrusion detection method and system for Internet of Vehicles based on Spark and combined deep learning are provided. The method includes the following steps: S1: setting up Spark distributed cluster; S2: initializing the Spark distributed cluster, constructing a convolutional neural network (CNN) and long short-term memory (LSTM) combined deep learning algorithm model, initializing parameters, and uploading collected data to a Hadoop distributed file system (HDFS); S3: reading the data from the HDFS for processing, and inputting the data to the CNN-LSTM combined deep learning algorithm model, for recognizing the data; and S4: dividing the data into multiple resilient distributed datasets (RDDs) for batch training with a preset number of iterations.

Abstract: There is disclosed a multi-dimensional user interface controller apparatus for providing a multi-dimensional user input. In an embodiment, the apparatus comprises a disc adapted to be tilted to control at least two-axes, and depressible in a third axis, and an outer ring surrounding the disc, the outer ring adapted to rotate about the disc to control a fourth axis. In use, the disc and the outer ring are controllable to provide at least four-axes of simultaneous control inputs. In an embodiment, the multi-dimensional user interface controller apparatus further comprises a plurality of magnetic sensors to sense the tilt of the disc or a press on the disc. In another embodiment, the disc further comprises a touch-sensitive top surface adapted to sense one or more fingers touching the surface.

Abstract: An intrusion detection method and system for Internet of Vehicles based on Spark and combined deep learning are provided. The method includes the following steps: S1: setting up Spark distributed cluster; S2: initializing the Spark distributed cluster, constructing a convolutional neural network (CNN) and long short-term memory (LSTM) combined deep learning algorithm model, initializing parameters, and uploading collected data to a Hadoop distributed file system (HDFS); S3: reading the data from the HDFS for processing, and inputting the data to the CNN-LSTM combined deep learning algorithm model, for recognizing the data; and S4: dividing the data into multiple resilient distributed datasets (RDDs) for batch training with a preset number of iterations.

Abstract: A method for vehicle detection based on single-axis geomagnetic sensor is disclosed. The method includes the following: arranging two geomagnetic sensors in tandem at a fixed distance in the same lane, and acquiring, by the two geomagnetic sensors, data when a vehicle passes by; performing data cleansing and denoising on the data acquired by the geomagnetic sensors; detecting, by the geomagnetic sensors, the vehicle by using an state machine algorithm based on a fixed threshold, and extracting moments when the vehicle enters and leaves detection ranges of the sensors; and collecting statistics on traffic flow in a predetermined period of time, and calculating the velocity and length of the vehicle. The presently disclosed method and apparatus can be independently used to obtain vehicle parameters at important traffic sections or intersections, or can be used in combination with other traffic detection devices to obtain more comprehensive traffic information.

Abstract: An image depth estimation method, including: obtaining a reference frame corresponding to a current frame and an inverse depth space range of the current frame; performing pyramid downsampling processing on the current frame and the reference frame respectively to obtain k layers of current images corresponding to the current frame and k layers of reference images corresponding to the reference frame, where k is a natural number greater than or equal to 2; and performing inverse depth estimation iteration processing on the k layers of current images based on the k layers of reference images and the inverse depth space range to obtain inverse depth estimation results of the current frame.

Abstract: A point cloud fusion method, an electronic device, and a computer storage medium are provided. The method includes: determining, according to at least two influence factors in scene information and/or camera information, depth confidences of pixel points in a current frame depth map, where the scene information and the camera information each at least includes one influence factor; and performing point cloud fusion processing on the pixel points in the current frame depth map according to the depth confidences.

Abstract: The present invention discloses a method for preparation of vitamin and carotenoid powder; the vitamin and carotenoid powder comprises vitamin, carotenoid microcapsule and physical gel protection film covered on the surface of the vitamin and carotenoid microcapsule; the physical gel protection film is made from super-molecular system; the super-molecular system comprises the following constituents of parts in weight: vegetable oil: 6-30 parts; gel: 0.5-3 parts and antioxidant: 0.5-3 parts. The hot super-molecular solution is sprayed on the surface of cold vitamin and carotenoid microcapsule during preparation to form a specific 3D network structure that is used to bind the liquefied vegetable oil to form a physical gel protection film; the physical gel protection film has improved product storage stability as well as the its stability for application in feedstuff, food and health care products.

Abstract: A method for vehicle detection based on single-axis geomagnetic sensor is disclosed. The method includes the following: arranging two geomagnetic sensors in tandem at a fixed distance in the same lane, and acquiring, by the two geomagnetic sensors, data when a vehicle passes by; performing data cleansing and denoising on the data acquired by the geomagnetic sensors; detecting, by the geomagnetic sensors, the vehicle by using an state machine algorithm based on a fixed threshold, and extracting moments when the vehicle enters and leaves detection ranges of the sensors; and collecting statistics on traffic flow in a predetermined period of time, and calculating the velocity and length of the vehicle. The presently disclosed method and apparatus can be independently used to obtain vehicle parameters at important traffic sections or intersections, or can be used in combination with other traffic detection devices to obtain more comprehensive traffic information.

Abstract: An electrical connector assembly includes an insulative housing, a plurality of terminals mounted on the insulative housing, a cable electrically connected with the terminals, a magnet disposed on the insulative housing, and an inner mold integrally formed on the insulative housing and the cable, wherein the electrical connector assembly also includes a heat insulation member disposed between the magnet and the inner mold to prevent the magnet from heat of the inner mold during molding.

Abstract: An electrical connector assembly includes an insulative housing, a plurality of terminals mounted on the insulative housing, a cable electrically connected with the terminals, a magnet disposed on the insulative housing, and an inner mold integrally formed on the insulative housing and the cable, wherein the electrical connector assembly also includes a heat insulation member disposed between the magnet and the inner mold to prevent the magnet from heat of the inner mold during molding.

Abstract: Various embodiments provide a portable electronic device holder (400, 500, 600, 700, 900, 1100, 1400) for a passenger seat (202), including a longitudinal clamping structure (420, 520) having a generally L-shaped cross-section. The clamping structure includes a supporting flap (422, 522) forming an L-base of the generally L-shaped clamping structure and configured to support a portable electronic device, and a clamping flap (424, 524) forming an L-leg of the generally L-shaped clamping structure and configured to clamp the portable electronic device against a surface (650) abutting the portable electronic device. The portable electronic device holder further includes a mounting element (410, 510) for slidably or titlably mounting the clamping structure to the passenger seat.

Abstract: A charging adapter comprises an insulative case and a circuit board assembly. The insulative case includes a first case and a second case, and defining a receiving cavity between the first and second cases. The circuit board assembly is retained in the receiving cavity. Each of the first and second cases comprises an inner shell and an outer shell molded together. The inner shells are made from hard plastic, and the outer shells are made from soft plastic.

Abstract: A connector assembly includes a connector and a cable electrically connected to the connector, the connector including an insulative housing, plural conductive terminals received in the insulative housing and extended in the front-rear direction, a metal shielding plate, and a grounding member fixed in the insulative housing, the conductive terminals including a tail portion exposed to a rear end of the insulative housing, the cable including a plurality of core wires, each of the core wires including an inner conductor and a metal shielding layer covering the inner conductor, wherein the grounding member is electrically connected to the metal shielding layer, the metal shielding layer of the core wires of the cable is electrically connected to the grounding member, and the inner conductor of the core wire is electrically connected to the tail portion of the corresponding conductive terminals.

Abstract: A charging adapter comprises an insulative case and a circuit board assembly. The insulative case includes a first case and a second case, and defining a receiving cavity between the first and second cases. The circuit board assembly is retained in the receiving cavity. Each of the first and second cases comprises an inner shell and an outer shell molded together. The inner shells are made from hard plastic, and the outer shells are made from soft plastic.

Abstract: A connector assembly includes a connector and a cable electrically connected to the connector, the connector including an insulative housing, plural conductive terminals received in the insulative housing and extended in the front-rear direction, a metal shielding plate, and a grounding member fixed in the insulative housing, the conductive terminals including a tail portion exposed to a rear end of the insulative housing, the cable including a plurality of core wires, each of the core wires including an inner conductor and a metal shielding layer covering the inner conductor, wherein the grounding member is electrically connected to the metal shielding layer, the metal shielding layer of the core wires of the cable is electrically connected to the grounding member, and the inner conductor of the core wire is electrically connected to the tail portion of the corresponding conductive terminals.

Abstract: A card tray includes a base portion having a receiving cavity; an operating portion located at a rear end of the base portion; and a metal shell riveted to the operating portion. The operating portion together with the metal shell is insert-molded with the base portion to affix the operating portion to the base portion. The metal shell has plural legs affixed to the operating portion and embedded in the base portion.

Abstract: An electronic card connector, defining an insertion direction, an ejection direction, and a transverse direction perpendicular to the insertion direction, includes an insulative housing and a number of terminals retained in the insulative housing. The terminals include a row of first contacts disposed along the insertion direction. Each first contact has a first affixed portion and a first contacting portion located at a peak therein. Each of the first contacts extends along the transverse direction. The first contacting portions of the neighboring first contacts are located offset along the insertion direction. The first contacting portions and associated first affixed portions of the first contacts are distanced differently in the transverse direction.