Abstract: A task unloading method based on unmanned aerial vehicle cooperation is provided. The method includes: establishing an unmanned aerial vehicle cooperation task unloading system; establishing, for each of ground users, a local task unloading model of the ground user; establishing, for each of the ground users, an unmanned aerial vehicle task unloading model of the ground user; establishing a hovering model of the unmanned aerial vehicles; and calculating an optimal task unloading assignment solution by using a second price auction algorithm to perform task unloading. With the method, task unloading is performed based on unmanned aerial vehicle mobile edge computing, improving the quality of service and the service experience of the users.

Abstract: An acceleration sensor includes an upper base plate; a lower base plate; and a gallium-based liquid metal encapsulated in graphene. The lower base plate includes a first surface including at least one diamond channel, and the upper base plate includes a second surface including a metal electrode corresponding to the at least one diamond channel in position; the liquid metal is disposed in a center of the at least one diamond channel; the first surface is bonded to the second surface through an adhesive; the liquid metal is movable in the at least one diamond channel and is in electrical contact with the metal electrode of the upper base plate during movement.

Abstract: The present disclosure provides a method for recognizing and diagnosing transformer equipment based on image fusion and target recognition, and relates to the technical field of recognizing power equipment. The method includes: performing, through wavelet transform, fusion on an infrared image and a visible light image that corresponds to equipment, and constructing a high-quality library of a fused infrared image and a fused visible light image; and training, based on an SSD target recognition algorithm, with the dataset that uses the library of the fused images as an algorithm, to intelligently recognize the fused image. The target recognition method for the fused images has advantages that infrared light is not affected by light, temperature information is provided, and a resolution of visible light is clear, so that accurate recognition and diagnosis on transformer equipment are implemented.

Abstract: The present disclosure provides a method for detecting an insulator fault of a transmission line based on an unfolding super-resolution network (USRNet) and an improved MobileNet-SSD algorithm, and belongs to the field of assessment on conditions of power equipment. The method includes: performing super-resolution reconstruction on an original image through a USRNet; based on a MobileNet-SSD detection model, performing clustering on a labeled box through K-means++, to generate an anchor box matching a target size of a fault of a transmission line; changing a structure of a multi-scale feature fusion module, and introducing, at a prediction end, six target detection boxes, to detect a small fault target; and optimizing overall performance of the model based on an effective intersection over union function. Based on a constructed improved MobileNet-SSD detection model, insulator recognition, positioning, and fault detection are performed on an optimized image.

Abstract: The present invention relates to a blockchain-based multi-tenant distributed leasing method for satellite network resources, which belongs to the field of mobile communication. The method includes: S1: constructing a multi-tenant business ecosystem for satellite network resource leasing; S2: constructing a blockchain-based leasing mechanism for satellite network resources, specifically: S21: constructing a dual leasing mechanism for satellite network resources; S22: constructing a blockchain-based resource leasing mechanism; S23: obtaining reputation value of a participant: first calculating reputation score of the participant, then combining transaction fees to ensure honesty of the participant, and finally using a sliding window to ensure that the selected leader is an honest participant who contributes consistently.

Abstract: Embodiments of the present disclosure provide a drainage apparatuses with scar gradient control capabilities for degradable glaucoma and methods of making the same cross-reference to related applications, comprising a long-strip-shaped drainage sheet with a uniform overall cross-sectional size, wherein the drainage sheet is made of a biodegradable material, an outer surface of the drainage sheet is provided with a drainage gap that penetrates through opposite sides of the drainage sheet, an outer surface of the drainage sheet is coated with a biodegradable surface coating, and the surface coating carries an anti-scarring drug, wherein the anti-scarring drug is configured to be gradually released as the surface coating degrades, and a distribution concentration of the anti-scarring drug within the surface coating varies in a non-monotonic manner.

Abstract: A blockchain-based interaction method and system for an edge computing service: using, as a bearing entity of an MECaaS, a device that has an environment for an operating system and that is of a user; registering a computing power device of the user as an edge node by using the MECaaS; uploading or updating registration information of the edge node to a blockchain layer; issuing, by a requesting device as a data producer, a computing task to the MECaaS; invoking, by the MECaaS, the smart contract deployed on the blockchain layer; standardizing a data format of the computing task; matching a target edge node for the requesting device; establishing an M2M communication between the requesting device and the target edge node, so that the requesting device can transmit raw data to the target edge node, and the target edge node can feed back a computing result to the requesting device.

Abstract: Disclosed are a remote medical guidance method and system based on virtual reality, belonging to the technical field of medical guidance. The method includes: obtaining an action sequence of remote guidance personnel for medical operations; and generating a three-dimensional operation model based on the action sequence and displaying the three-dimensional operation model in an operation live scene. The present disclosure achieves remote guidance of medical operations based on virtual reality, eliminating the need to relocate patients or medical personnel and avoiding missing the optimal treatment time window.

Abstract: A method and system for detecting dirt on an electrode of an electromagnetic flowmeter are provided. The method includes: under three different conditions acquiring resistance values between the electrode and ground to form a first dataset, second datasets, and a sample set to be tested; extracting a positive definite feature matrix corresponding to each sample batch and calculating a Riemann center thereof; calculating a similarity index between the sample feature matrix and each of the first feature matrices and second feature matrices; extracting/feature matrices with a largest similarity index, and calculating a local Riemann center thereof; and calculating proximity between the local Riemann center and each of the second Riemann centers, and determining that a Riemann center with the greatest proximity corresponds to dirt on the electrode corresponding to the sample set to be tested. The method can achieve online rapid detection of dirt on the electrode.

Abstract: A method for fault diagnosis of a pressure sensor of an electro-hydraulic system with an explicit controller and an implicit controller in parallel is provided. The method may include receiving parameter information of the electro-hydraulic system; estimating a first chamber pressure of the hydraulic actuator online by utilizing a second chamber pressure of the hydraulic actuator; obtaining valve opening signals of the explicit controller and the implicit controller in a valve controller; converting the valve opening signals are difference-calculated to obtain two residual signals; and the residuals of an independent metering valve 1 and an independent metering valve 2 are compared with a preset threshold, respectively, to identify whether the independent metering valve 1 and the independent metering valve 2 are faulty or not. The method is simple to operate, has a fast response time and low cost for troubleshooting, and improves the diagnostic accuracy and coverage of the electro-hydraulic system.

Abstract: The disclosure discloses a transmission system capable of implementing four-wheel drive and an operating model thereof. The transmission system includes an odd shift motor, an even shift motor, a front-wheel drive shaft, a rear-wheel drive shaft, a front-wheel output shaft gear disposed on the front-wheel drive shaft, and a rear-wheel output shaft gear disposed on the rear-wheel drive shaft. The front-wheel output shaft gear and the rear-wheel output shaft gear are connected by a front/rear drive shaft coupling sleeve. In the disclosure, coordinated control of two motors allows the motors to operate with high efficiency to the maximum, which improves the efficiency of the transmission system. A four-wheel drive model and a two-wheel drive model are implemented through the coordinated control of two motors. Moreover, in the disclosure, sensor information is used to synchronously control a rotational speed during gear shift, which can reduce the impact during the gear shift.

Abstract: A multi-sensor fusion method and system for intelligent driving vehicles are provided, which relate to the technical field of intelligent driving vehicles. The method includes: establishing an extended target tracker based on a GM-PHD algorithm and a rectangular target model of a detected object; processing detection information of a millimeter-wave radar by using the extended target tracker to obtain millimeter-wave radar track information of the detected object; processing detection information of a laser radar by using the established bounding-box detector and a JPDA tracker provided with an IMM-UKF to obtain laser-radar track information of the detected object; processing the millimeter-wave radar track information and the laser-radar track information by performing time-space conversion to obtain a central fusion node; and processing the central fusion node by using an IMF algorithm to obtain global track information.

Abstract: The present disclosure provides a preparation method of a plasma-treated nanofiber-based hydrogen gas sensing material, including the following steps: (1) stirring a mixed solution of absolute ethanol, polyvinyl pyrrolidone (PVP), N,N-dimethylformamide, SnCl2·H2O, and Zn(CH3COO)2·2H2O uniformly on a constant-temperature magnetic stirrer to obtain a spinning solution; (2) electrospinning the spinning solution and depositing on an aluminum foil to obtain a spinning fiber; (3) annealing the spinning fiber in a muffle furnace to obtain a hydrogen gas sensing material sample; and (4) subjecting the hydrogen gas sensing material sample to a vacuum argon plasma treatment with a Hall ion source to obtain the nanofiber-based hydrogen gas sensing material. In the method, nanofibers are prepared by electrospinning and subjected to the vacuum argon plasma treatment through the Hall ion source.

Abstract: The invention relates to an isolated DC power supply utilizing a Class-E inverter and its design method, within the field of power electronics and high voltage technology. This DC power supply comprises a DC power source, a Class-E inverter, a CL network, a series resonant unit, and a rectifier circuit, featuring two structures. It is characterized by a single switching device and a stable output voltage that does not vary with load changes. This resolves stability issues commonly associated with isolated DC power supplies based on Class-E inverters. The invention also introduces a design method that includes calculating core parameters like capacitors and inductors, ensuring optimal component selection. Offering strong isolation, constant voltage output, high efficiency, and cost-effectiveness, this DC power supply is ideal for use in wireless power transfer systems, high-frequency power supplies, and isolated sensor and gate driver power supplies.

Abstract: A method for reconstructing a primary voltage of a potential transformer (PT) based on an inverse black box model and an inverse electromagnetic duality model includes: collecting a secondary voltage signal of a power system by the PT, and dividing the secondary voltage signal into a low-frequency voltage component and a high-frequency voltage component; performing primary voltage reconstruction by applying the inverse black box model on the high-frequency voltage component, to obtain a primary-voltage high-frequency voltage component; performing primary voltage reconstruction by applying the inverse electromagnetic duality model on the low-frequency voltage component, to obtain a primary-voltage low-frequency voltage component; and integrating the primary-voltage high-frequency voltage component and the primary-voltage low-frequency voltage component, to obtain the primary voltage of the power system.

Abstract: A self-sensing and separated dual-cylinder magnetorheological damper includes a first piston cylinder and a second piston cylinder which are in angular communication with each other. The first piston cylinder includes a piston inner cylinder and a piston outer cylinder which together with the second piston cylinder form a magnetorheological fluid circulation channel. The piston inner cylinder is provided with a piston rod assembly reciprocating in an axial direction of the piston inner cylinder, and when the piston rod assembly is compressed and restored, the magnetorheological liquid correspondingly forms a first circulation loop and a second circulation loop respectively. The second piston cylinder is provided therein with a magnetorheological liquid adjustment mechanism for forming the first circulation loop and the second circulation loop.

Abstract: The present invention includes techniques for data processing and particularly relates to a method and system for predicting human fall risk based on electronic nursing text (ENT) data. The method comprises the following steps: obtaining an ENT data set, pre-processing data in the ENT data set, and constructing a Morse Fall Scale (MFS) dictionary with the pre-processed data; extracting features from the ENT data of patients to be predicted with a natural language processing technology; analyzing the extracted text features by the MFS dictionary to obtain a data set of risk factors; training a decision tree algorithm by using the data set of risk factors to obtain a prediction result of the patient's fall risk; clustering and precisely nursing the patients according to the prediction result.

Abstract: The invention discloses a method and system for preparing multi-compound ester insulating oil. The method utilizes vacuum esterification, involving esterification of pentaerythritol and fatty acid, followed by vacuum distillation, adsorption, washing, suction filtration, and vacuum drying to produce pure synthetic ester insulating oil. By detecting saturated fatty acid content, polarization strength, and closed-cup flash point, the most suitable natural ester insulating oil is selected. Ten different proportions of mixed ester insulating oils are obtained through blending and tested for mass and heat changes in nitrogen and air environments. Dielectric performance parameters at varying temperatures are analyzed to calculate activation energy. The resulting mixed ester insulating oil, NSE3 (85 vol % KA+15 vol % FR3), exhibits a high flash point, low pour point, and high AC breakdown voltage, offering excellent comprehensive performance.

Abstract: The disclosure discloses a transmission system capable of implementing four-wheel drive and an operating model thereof. The transmission system includes an odd shift motor, an even shift motor, a front-wheel drive shaft, a rear-wheel drive shaft, a front-wheel output shaft gear disposed on the front-wheel drive shaft, and a rear-wheel output shaft gear disposed on the rear-wheel drive shaft. The front-wheel output shaft gear and the rear-wheel output shaft gear are connected by a front/rear drive shaft coupling sleeve. In the disclosure, coordinated control of two motors allows the motors to operate with high efficiency to the maximum, which improves the efficiency of the transmission system. A four-wheel drive model and a two-wheel drive model are implemented through the coordinated control of two motors. Moreover, in the disclosure, sensor information is used to synchronously control a rotational speed during gear shift, which can reduce the impact during the gear shift.

Abstract: A joint optimization method for path selection and gate scheduling in time-sensitive networking comprises S1, a CNC finding a TSN topology, and abstracting same into a network directed graph; S2, a terminal device sending to a CUC a TSN connection request, and the CUC sending same to the CNC; S3, the CNC selecting K shortest paths as alternative paths; S4, the CNC selecting m preferred paths; S5, the CNC finding an optimal transmission path for a TT stream, and finding a proper transmission path for a non-TT stream; S6, CNC completing traversal; S7, configuring a gate control list for the optimal transmission path of each pair of terminal devices; and S8, the CNC encapsulating a computation result into a gate scheduling table, configuring the gate scheduling table to a TSN switch, and then sending a traffic transmission computation result to the TSN terminal device.