Abstract: Disclosed is a zoom lens, including: a lens barrel, a lens group, a linear magnetic driving mechanism, and a locking structure; the lens barrel extends in a front-to-rear direction; the lens group includes at least one mobile group movably provided in the lens barrel along the front-to-rear direction; the linear magnetic driving mechanism is provided in the lens barrel and drivenly connected to the mobile group; and the locking structure includes a locking member and a locking mechanism, the locking member includes a plurality of locking grooves, and the locking mechanism includes: a latch, an electromagnetic driving mechanism and a reset member; the latch is movably provided in a direction approaching and away from each locking groove, the latch has a locking position inserted into the locking groove and an unlocking position separated from the locking groove during a moving stroke.

Abstract: A radio frequency device includes a substrate, an epitaxial structure, a first electrode, a second electrode, a gate structure, a metal bulk, an auxiliary metal bulk, and a metal connection line. The first/second electrode includes a first/second electrode body and first/second electrode fingers. The gate structure includes a sub-gate having parallel portions and vertical portions alternately connected to one another in series to form a serpentine shape. The auxiliary metal bulk is arranged between corresponding adjacent two parallel portions and between a corresponding vertical portion and an end of a corresponding first electrode finger. The metal bulk is arranged between the auxiliary metal bulk and the vertical portion corresponding to the auxiliary metal bulk. The metal connection line connects the metal bulk to the second electrode body and is insulated from the sub-gate. A radio frequency front-end apparatus including the radio frequency device is also disclosed.

Abstract: The provided is a torsion compensation system and a compensation method for a FBG curvature sensor. The compensation system includes a FBG curvature sensor, installed on a scraper conveyor; angle sensors, including two and installed on both sides of the FBG curvature sensor, are configured to obtain the torsion angle of the FBG curvature sensor by monitoring the difference between the two ends of the FBG curvature sensor; a FBG string, arranged on the FBG curvature sensor to form a plurality of grating measuring points, is configured to perceive the center wavelength of the FBG curvature sensor; a FBG demodulator, coupled with the FBG string, is configured to convert the optical signal of the center wavelength perceived by the FBG string into an electrical signal; a computer, respectively coupled with the angle sensors and the FBG demodulator, is configured to eliminate the FBG wavelength variation caused by torsion.

Abstract: The provided is a torsion compensation system and a compensation method for a FBG curvature sensor. The compensation system includes a FBG curvature sensor, installed on a scraper conveyor; angle sensors, including two and installed on both sides of the FBG curvature sensor, are configured to obtain the torsion angle of the FBG curvature sensor by monitoring the difference between the two ends of the FBG curvature sensor; a FBG string, arranged on the FBG curvature sensor to form a plurality of grating measuring points, is configured to perceive the center wavelength of the FBG curvature sensor; a FBG demodulator, coupled with the FBG string, is configured to convert the optical signal of the center wavelength perceived by the FBG string into an electrical signal; a computer, respectively coupled with the angle sensors and the FBG demodulator, is configured to eliminate the FBG wavelength variation caused by torsion.

Abstract: A distributed optical fiber monitoring system for failure monitoring of a deep rock mass is applied to an underground chamber and can simultaneously monitor failure signals in axial and radial directions of the underground chamber, facilitating three-dimensional positioning of a failure source. The distributed optical fiber monitoring system includes a first optical fiber and a second optical fiber. The first optical fiber is deployed on a chamber wall along the axial direction of the underground chamber to monitor the failure signal distributed along the axial direction of the underground chamber. The second optical fiber mainly includes a peripheral optical fiber segment and a direction-changing transition segment. The peripheral optical fiber segment is deployed on the chamber wall along a cross-sectional profile of the chamber wall to monitor the failure signal distributed along the radial direction of the underground chamber.

Abstract: A preparation method comprises: preparing a green body using green body powder; applying an overglaze on the surface of the green body; ink-jet printing a pattern on the surface of green body; applying a protective glaze on the surface of the green body; applying an anti-counterfeiting material on the surface of the green body; firing the green body, titanite and high-refractive-index oxide being wetted and wrapped by a molten liquid produced by melting a low-temperature glaze powder in a firing environment, and sunken into the protective glaze without generating opacification; and then polishing to obtain a ceramic plate having an anti-counterfeiting visual effect. The anti-counterfeiting visual effect is a visual effect in which a high-intensity refraction effect is achieved when the sight line direction is consistent with the path of reflected light, but no refraction effect is achieved when the sight line direction deviates from the path.

Abstract: The invention discloses method of improving AUV wireless communications systems, including steps of: collecting the channel frequency response and receiving signal data in the electromagnetic environment where AUV works on the water surface,; constructing a multi-dimensional feature aggregation network model based on self-attention mechanism; training a multi-dimensional feature aggregation network; and preprocessing received AUV signals to obtain improved input data. The network model completed by offline training is loaded, and the input data is input into the network for channel estimation. The invention uses a self-attention mechanism in deep learning to build a multi-dimensional feature aggregation network model. The estimation performance is much higher than the traditional channel estimation method, and the space-time complexity of the network is very low, which can be applied to an AUV wireless communication system through offline training.

Abstract: The present disclosure provides a large single-crystal Prussian white-based sodium-ion positive electrode material and a method for preparing same. The Prussian white-based sodium-ion positive electrode material has a chemical general formula NaxMn[Fe(CN)6], wherein 1.9?x<2.00. The method comprises: (1) mixing and dissolving Na4Fe(CN)6·10H2O and ethylenediaminetetraacetic acid manganese sodium salt to prepare a first solution A; and (2) dropwise adding a diluted acid, as a second solution B, into the first solution A, performing an aging reaction, washing, and drying to give the Prussian white-based sodium-ion positive electrode material with a low water content. By using an acidic cation dissociation method, the present disclosure synthesizes a Prussian white-based sodium-ion positive electrode material with a low water content at room temperature, and the synthesized material features large primary particles, good thermal stability, a low water content, and a high capacity.

Abstract: A linear array scanning device includes: an object carrying assembly configured to carry a to-be-detected magnetic sample; a first magnetic field generation assembly configured to generate a first gradient magnetic field; a light source assembly configured to output linearly polarized light; a first light splitting assembly disposed on an emergent light path of the light source assembly and is configured to receive the linearly polarized light, split the linearly polarized light into multiple first sub-linearly polarized light, and project first sub-linearly polarized light propagating along a first direction to a first detection region of the to-be-detected magnetic sample; and a first detection assembly configured to receive first reflected linearly polarized light reflected back from the first detection region, detect polarization information of the first reflected linearly polarized light, and acquire magnetic domain uniformity information of the to-be-detected magnetic sample.

Abstract: A display panel and a display device are provided. The display panel includes a substrate, a first metal layer and a second metal layer. The first metal layer includes a first touch wiring. The second metal layer includes a touch electrode and a second touch wiring. The first touch wiring is electrically connected to a corresponding touch electrode through a first via hole. The touch electrode further includes a touch metal side edge on a side near a wiring region. The first touch wiring at least partially overlaps with an adjacent second touch wiring, and the first via hole at least partially overlaps with a touch metal side edge of a corresponding touch electrode.

Abstract: Motion generation model-based motion generation method, device, and storage medium relate to the field of artificial intelligence technologies. The method includes: obtaining a text containing motion information; generating a text feature of the text through a text encoder; generating an intermediate motion sequence in a feature space of a first dimension based on the text feature through a first diffusion model; and performing detail enhancement processing on the intermediate motion sequence in a feature space of a second dimension through a second diffusion model, to obtain an output motion sequence matching the text, the second dimension being greater than the first dimension. In this application, the intermediate motion sequence is preliminarily generated through the first diffusion model, and detail enhancement processing is performed on the intermediate motion sequence through the second diffusion model, thereby improving the richness of details in the output motion sequence.

Abstract: Provided is a battery assembly, which includes a cover plate and a pole. The pole penetrates the cover plate and is fixed with the cover plate by riveting. For the battery assembly provided by the application, the pole and the cover plate are fixed by riveting. Compared with the fixing method of welding, it not only simplifies the fixing operation, improves the production efficiency, but also reduces the production cost. Also provided are a preparation method of a battery assembly, a battery and an electric vehicle.

Abstract: This disclosure relates to a virtual object motion generation method and apparatus, and a computer device. The method includes: parsing the motion description text to obtain respective motion description information of the plurality of semantic levels; separately encoding the motion description information of the plurality of semantic levels to obtain respective motion description representations of the plurality of semantic levels; performing denoising processing at the first semantic level on the sampled noise signal based on a motion description representation of the first semantic level, to obtain a motion eigenvector; performing, at each semantic level after the first semantic level, denoising processing on the sampled noise signal based on a motion eigenvector and respective motion description representations of at least two semantic levels from the first semantic level to the current semantic level, to obtain a motion eigenvector; and decoding the motion eigenvector to obtain the virtual object motion.

Abstract: Systems and methods for integrated multi-factor multi-label analysis include using one or more deep learning systems, such as neural networks, to analyze how well one or more entities are likely to benefit from a targeted action. Data associated with each of the entities is analyzed to determine a score for each of the proposed targeted actions using multiple analysis factors. The scores for each analysis factor are determined using a different multi-layer analysis network for each analysis factor. The scores for each analysis factor are then combined to determine an overall score for each of the proposed targeted actions. The entities and the proposed targeted actions with the highest scores are then identified and then used to determine which entities are to be the subject of which targeted actions.

Abstract: One example circuit includes an ideal diode controller including a voltage clamp circuit, an anode terminal, a cathode terminal, and a control terminal arranged between the anode and the cathode. The circuit also includes a bypass switch controlled by a switch signal provided from the control terminal. The bypass switch can operate in a closed state in a first mode in which a first voltage at the anode terminal is greater than or approximately equal to a second voltage at the cathode terminal to conduct a bypass current. The bypass switch can operate in an open state in a second mode in which the first voltage is less than the second voltage. The voltage clamp circuit can be configured to clamp an amplitude of the second voltage to a predefined threshold amplitude relative to an amplitude of the first voltage in the second mode.

Abstract: A control method, a control apparatus, a control system, and a readable storage medium are provided. The control method for controlling a fan for a power conversion circuit board includes: determining a core cooling rotational speed based on a core temperature of the power conversion circuit board; determining a plurality of power cooling rotational speeds based on a heat radiation temperature of the power conversion circuit board and charging and discharging power of an energy storage system to which the power conversion circuit board is applied; and controlling the fan to rotate at a maximum rotational speed among the core cooling rotational speed and the plurality of power cooling rotational speeds.

Abstract: An optical fiber housing comprises a first face, a second face opposite the first face, a first side, and a second side opposite the first side. The first face is spaced apart from the second face by a first distance. A plurality of optical fibers extends in a longitudinal direction between the first and second faces, and are laterally spaced apart across a transverse width of the first face between the first side and the second side. Each optical fiber comprises a diameter. A surface of the housing is orthogonal to the first face and the first side. A plurality of alignment features is on the surface stand off from a remainder of the surface by a height greater than the diameter. The alignment features extend a second distance in the longitudinal direction that is less than the first distance, and comprises a curved or V-shaped peripheral surface.

Abstract: An energy storage power supply is provided and includes a shell having a receiving chamber, in which the receiving chamber is provided with a first support having one or more first receiving recesses, each of the one or more first receiving recesses having a first via hole at a bottom of the first receiving recess; a battery cell located in the receiving chamber and disposed at the first support, the battery cell including a main body, the main body having an end fitted in a corresponding first receiving recess of the one or more first receiving recesses; a second support fixedly connected to the shell and disposed at a side of the battery cell away from the first support, the battery cell being sandwiched between the first support and the second support; and an inverter located in the receiving chamber and electrically connected to the battery cell.

Abstract: An optical fiber sensing method and sensing system for straightness of the scraper conveyor is provided.

Abstract: A linear array scanning device includes: an object carrying assembly configured to carry a to-be-detected magnetic sample; a first magnetic field generation assembly configured to generate a first gradient magnetic field; a light source assembly configured to output linearly polarized light; a first light splitting assembly disposed on an emergent light path of the light source assembly and is configured to receive the linearly polarized light, split the linearly polarized light into multiple first sub-linearly polarized light, and project first sub-linearly polarized light propagating along a first direction to a first detection region of the to-be-detected magnetic sample; and a first detection assembly configured to receive first reflected linearly polarized light reflected back from the first detection region, detect polarization information of the first reflected linearly polarized light, and acquire magnetic domain uniformity information of the to-be-detected magnetic sample.