Abstract: A method and apparatus, an electronic device, and a storage medium for image processing. The method for image processing includes: acquiring an image sequence of a target object in response to a live body detection trigger operation, wherein the image sequence includes an image to be detected (S110); determining, for the image to be detected, multiple frames of reference images associated with the image to be detected in acquisition time from the image sequence (S120); determining a risk factor of the image to be detected based on a region to be detected in the multiple frames of reference images, wherein the region to be detected at least includes a region where a verification organ performing a preset verification action is located, and the risk factor indicates whether the target object is a live body (S130).

Abstract: Disclosed are a test method and system for high-speed impact of a foreign object on a rail vehicle component in a low-temperature environment. The system includes a rapid cooling environmental chamber, a self-pressurizing liquid nitrogen tank, a high-pressure air cannon system, and a strain collection system. Rapid cooling is implemented through a liquid nitrogen condensation pipe, and a multi-angle impact test is completed through a rotating support seat and an adjustable-position sliding mechanism. A disposable low-strength sealing thermal insulation film is used to reduce heat exchange and improve test accuracy. An environmental temperature and humidity sensor is integrated with a built-in sensor of a to-be-tested component to implement temperature and humidity coupled monitoring. A cooling structure is arranged outside a barrel of the high-pressure air cannon system, and the strain collection system can synchronously complete high-speed camera shooting and strain and speed data collection.

Abstract: Disclosed is a device including an inductor that includes a substrate; a plurality of vias disposed through the substrate and filled with a conductive metal; a via structure disposed through the substrate and extending between the plurality of vias, wherein the via structure is filled with a magnetic material to form a magnetic core of the inductor; and one or more patterned metallization layers interconnecting the conductive metal of the plurality of vias; wherein the one or more patterned metallization layers and the conductive metal filling the plurality of vias form a winding of the inductor about the magnetic core.

Abstract: A container handling method employing dense storage comprises: when at least one blocking container blocking removal of a target container is stored on storage shelf, container fetching mechanism of a robot fetching at least one blocking container from storage shelf, and temporarily storing same on buffer mechanism of robot; and container fetching mechanism of robot fetching target container from storage shelf, storing same on buffer mechanism of robot, fetching at least one blocking container from buffer mechanism of robot, and placing same at an original storage position thereof, an original storage position of target container, or other vacant storage positions on storage shelf; when buffer mechanism of robot is full due to at least one blocking container, container fetching mechanism of robot fetching target container from storage shelf, and keeping same on container fetching mechanism of robot.

Abstract: A liquid-gas phase-change launching device includes an initial chamber, a connecting component, a launch tube and phase-change tubes. Two ends of the initial chamber are communicated with the connecting component and the launch tube, respectively. The connecting component is provided with through holes. The phase-change tubes are communicated with the initial chamber through the through holes. The initial chamber has a cavity inside. An end of the cavity near the through holes is larger than an end of the cavity near the launch tube in caliber. The cavity includes a first sub-cavity and a second sub-cavity. A first end of the first sub-cavity is communicated with the through holes. A second end of the first sub-cavity is communicated with a first end of the second sub-cavity. A second end of the second sub-cavity is communicated with the launch tube.

Abstract: A control method for an AC-DC conversion circuit of an electrical equipment includes a voltage loop control and a current loop control. The voltage loop control provides a current instantaneous instruction value based on a first comparison between a bus voltage sampled value and a bus voltage set value of the AC-DC conversion circuit. The current loop control provides a pulse width modulation (PWM) control signal for the AC-DC conversion circuit based on a second comparison between an inductor current sampled value of the AC-DC conversion circuit and the current instantaneous instruction value. The voltage loop control includes a coefficient adjustment step, and the coefficient adjustment step dynamically adjusts a coefficient K in the voltage loop control based on a load amount of the electrical equipment.

Abstract: An optical module includes a circuit board and a light-emitting component, the circuit board includes a plurality of board layers, a plurality of medium layers and a blind hole in a thickness direction. A filing member is disposed in the blind hole; the light-emitting component includes a light-emitting housing, a light-emitting assembly, a light-emitting driving chip and a heat conduction column; wherein a position of the blind hole corresponds to a position of the light-emitting driving chip; and during transfer of heat generated by the light-emitting driving chip to the circuit board, the heat can be conducted, via the filling member in the blind hole and the heat conduction column, to the shell for heat dissipation.

Abstract: A container conveying system including a controller, a first robot, and/or a second robot. A first container pickup mechanism is provided on the first robot. A second container pickup mechanism is provided on the second robot. The controller is configured to, in response to a container conveying request, send a first conveying instruction to the first robot if it is determined a target container to be conveyed based on the container conveying request has a size within a first size range; or send a second conveying instruction to the second robot if it is determined the target has a size within a second size range. In warehousing operation scenarios, by jointly using the two robots for operation, containers with various container sizes can be picked up and placed, thus improving utilization rate of a container storage space.

Abstract: A disposable injection pen includes a pen casing, an injection head mechanism and a trigger mechanism. The injection head mechanism includes a barrel arranged in the pen casing and a needle arranged on a top thereof. The barrel is provided with a rubber plug. The trigger mechanism includes a protective sheath arranged in the pen casing and movably wrapped around the needle. A bottom of the protective sheath movably abuts against a sliding part. An outside of the sliding part is sleeved with a secondary spring whose bottom is fixedly connected to a bottom of the pen casing. An inside of the sliding part is movably clamped with a push rod with an open bottom. An inner top of the push rod is connected to an inner bottom of the sliding part through a primary spring.

Abstract: An inventory management method and system. The method includes: scheduling, according to task information, a first autonomous mobile robot and a second autonomous mobile robot to travel to a target workstation (103) to execute tasks; controlling the first autonomous mobile robot to fetch and transport a first inventory container to a first working point in the target workstation according to an instruction; and controlling the second autonomous mobile robot to fetch and transport a second inventory container to a second work point in the target workstation according to an instruction. The first working point (1031) and the second working point (1032) are two adjacent working points in the target workstation.

Abstract: A method of estimating power headroom for multi-panel simultaneous uplink transmissions and related devices are provided. The method, performed by a UE, includes being configured more than one panel-specific maximum powers of different panels; and computing power headroom (PH), wherein the PH is a UE-specific PH which is a sum of the panel-specific maximum powers of the panels minus a sum of panel-specific scheduling powers of UL transmissions on the panels, or wherein the PH is a panel-specific PH of one panel which is the panel-specific maximum power of the panel minus the panel-specific scheduling power of the UL transmission on the panel. With this method, power headroom reporting can be achieved for multiple panels performing simultaneous UL transmissions in the UE. In addition, the UE may compute the UE-specific PH or the panel-specific PH for another configuration, e.g., the UE is configured a UE-specific maximum power.

Abstract: A secondary battery includes a secondary battery body and a first connecting member; the secondary battery body has a main portion and a first side sealing edge; the main portion includes a first main wall, a second main wall, and a first side wall; along a first direction, the first main wall and the second main wall are disposed opposite to each other, the first side wall is connected between the first main wall and the second main wall, the first side sealing edge extends out of the first side wall and is folded and fastened to the first side wall. The first connecting member includes a first fastening portion and a first connecting portion connected to the first fastening portion, the first fastening portion is fastened to the first side sealing edge.

Abstract: A system starting method includes: reading secure startup data; judging whether a private key number in the secure startup data is the same as a public key number recorded in a one time programmable memory, where the one time programmable memory records a currently effective public key number; when the private key number is the same as the public key number, performing a system startup procedure; and when the private key number is different from the public key number, sending a startup ending instruction.

Abstract: The present application provides a simulation method for equivalent fatigue damage of wheel-rail steel, and relates to the study of wheel-rail relationship of rail transportation. After obtaining the train load spectrum when the target train serves for the preset mileage, the wheel-rail systematic 3D model corresponding to the target train is assigned to simulate the load according to the train load spectrum to obtain the stress spectrum of the dangerous part of the rim, and determine the target stress and stress application frequency corresponding to the expected simulated mileage according to the stress spectrum of the dangerous part of the rim. Then, the driving fatigue test machine carries out fatigue tests on the wheel-rail steel fatigue sample of the target train according to the target stress and stress application frequency, and obtains the equivalent fatigue damage data of the wheel-rail steel at the expected simulated mileage of the target train.

Abstract: A washing machine and a control method thereof, the washing machine includes: a water container; a filtering device, communicating with the water container and configured to filter the water in the water container, the filtering device is provided with a discharge outlet for discharging filtered impurities outward; and a recovery device, separately arranged with the filtering device and communicating with the discharge outlet of the filtering device for collecting the discharged filtered impurities. The filtered impurities are collected by setting a recovery device, so that the filtered impurities are not directly discharged along with the drainage water of the washing machine. At the same time, the recovery device and the filtering device are separately arranged, and the filtered impurities are discharged into the recovery device without being accumulated in the filtering device, thus avoiding the influence on the filtering efficiency.

Abstract: A goods sorting system includes at least one layer of operation platform, a control server, and at least one first robot operating on the operation platform. Each first robot includes at least two delivery mechanisms. Each operation platform includes at least two delivery container layers corresponding to the delivery mechanisms. Each delivery container layer includes at least one delivery container. The control server determines a target delivery container, a target delivery container layer, and a target operation platform, based on information of goods to be sorted; dispatches one first robot as a target first robot and determines one delivery mechanism as a target delivery mechanism, based on the target delivery container layer and the target operation platform; and controls the target delivery mechanism to obtain the goods to be sorted. The first robot delivers the goods to be sorted in the target delivery mechanism into the target delivery container.

Abstract: A method includes sending a first orbital angular momentum (OAM) reference signal in a first beam direction. The first OAM reference signal is used to determine a second beam direction from the first beam direction. The method also includes receiving first indication information. The first indication information includes information about the second beam direction. The method also includes sending a second OAM reference signal in the second beam direction. The second OAM reference signal is used to determine antenna information and a second channel response of the second OAM reference signal. The method also includes receiving second indication information. The second indication information is determined based on the second channel response and the antenna information. The second indication information is used to determine a transmission manner. The transmission manner includes OAM wave transmission, plane wave transmission, or joint transmission of OAM and a plane wave.

Abstract: A manufacturing method for ceramics with complex structure by laser 3D printing, includes acquiring a three-dimensional model of a complex component to be fabricated, and devising a laser scanning path; placing a substrate in a gas-phase reactor chamber, followed by vacuuming and aerating vapor mixture of gas-phase precursors and carrier gas into the gas-phase reactor chamber; preheating the substrate to a specified temperature, turning on a laser and a thermal imager, the thermal imager controlling laser power in real time by generating a two-dimensional temperature map of a laser spot to realize temperature control a the printing process; setting a distance between the flat-field focusing lens and the substrate and a laser scanning speed; after stacking another one of the ceramic sheets repeatedly, until completing a fabrication of a ceramic complex component.

Abstract: A portable temperature adjustment device includes a housing, a fan arranged in the housing, and a temperature adjustment assembly mounted to the housing. The temperature adjustment assembly includes a temperature adjustment component and a thermal conduction component in thermal conductive connection with the temperature adjustment component. The thermal conduction component includes a ventilation port. The temperature adjustment component is configured to adjust the temperature of the thermal conduction component such that the airflow generated by the fan and output from the ventilation port of the thermal conduction component is cooled down or heated up.