• Patent number: 11831708
    Abstract: A distributed computation offloading method based on computation-network collaboration in a stochastic network is provided. The distributed computation offloading method includes: building a device revenue maximization problem model and a MEC server revenue maximization problem model based on a local computing model and an edge cloud computing model; building composite sets of scenarios for dwell time and waiting latency based on a random movement of a user and burst computation demands; compensating for a game strategy by using a posteriori recourse action and building a game-based stochastic programming model between the device and the MEC server; transforming a multi-stage stochastic regularization problem for both the device and the MEC server into a DEP problem by constructing a scenario tree, and solving the DEP problem to obtain an optimal task strategy for the offloading from the MEC server and an optimal offering strategy of the MEC server to the device.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: November 28, 2023
    Inventors: Yun Li, Shichao Xia, Zhixiu Yao, Guangfu Wu, Hongcheng Zhuang, Zhaocheng Wang
  • Patent number: 11827645
    Abstract: Disclosed is a compound of Formula I or a pharmaceutically acceptable salt thereof, preparation methods thereof, pharmaceutical composition comprising the same, and use thereof in the treatment of diseases such as pancreatic cancer.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: November 28, 2023
    Inventors: Zhigang Xu, Zhongzhu Chen, Dianyong Tang
  • Patent number: 11822417
    Abstract: The present invention provides a factory power management and control method based on edge-cloud coordination, including: 1) forming an industrial field network by a field node, a routing node and a device executing production tasks; 2) parsing production task information data and sending; 3) issuing an STN model in production field to an edge node; 4) sending to the edge node; 5) computing, required to complete the production tasks; 6) computing values of comprehensive ranks; 7) executing, by the edge node, the higher rank, and executing, by the cloud power management center, the lower rank; 8) executing, by the edge node, a demand response algorithm; 9) executing, by the production device, the production tasks based on computing results; and executing, by a power generation station in factory, a power storage station in factory and a power supply station outside factory, corresponding schemes based on the results.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: November 21, 2023
    Inventors: Ping Wang, Xu Yang, Min Wei, Caiqin Li
  • Patent number: 11818074
    Abstract: The present invention relates to a method for estimating clock frequency offsets of industrial wireless sensor networks based on timing response. In the method, a data packet is sent from a node to be synchronized to a reference node. After the reference node receives the data packet, it replies an acknowledgement after a timing response interval, which is mapped according to a sequence number of the data packet. After communication and interaction for multiple times, a relative frequency offset and a fixed delay between node clocks can be estimated by the node to be synchronized without exchanging timestamp information. The present invention does not need to receive or send messages specially used for time synchronization parameter estimation, which realizes a long-term tracking of clock frequency offset with a low computation cost and reduces communication overhead and energy consumption.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: November 14, 2023
    Assignee: Chongqing University Of Posts And Telecommunications
    Inventors: Heng Wang, Yang Zhong, Fei Yu
  • Patent number: 11808319
    Abstract: A horizontally arranged six-degree-of-freedom constant-stiffness mechanism is provided, and includes an upper platform, a bottom plate, three composite spherical hinges, spherical hinges, support rods, guide rail slider assemblies, and six electromagnetic adjustable stiffness units. Two ends of a shaft on which a permanent magnet is fixed in each electromagnetic adjustable stiffness unit are fixed to the bottom plate via shaft supports. Axially moving housings of electromagnetic adjustable stiffness units are fixed on sliders of the guide rail slider assemblies via slider backing plates respectively. Guide rail slider assembles are fixed on the bottom plate. Tops of the housings are mounted with the spherical hinges respectively. A bottom of the upper platform is uniformly mounted with the composite spherical hinges. One end of each support rod is threadedly connected to a corresponding one of the spherical hinges, and another end is connected with a corresponding one of composite spherical hinges.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: November 7, 2023
    Assignees: Chongqing University, Shanghai University
    Inventors: Huayan Pu, Tong Wang, Qimin Li, Jinglei Zhao, Jun Luo, Jie Ma
  • Patent number: 11804074
    Abstract: The present disclosure relates to a method for recognizing facial expressions based on adversarial elimination. First, a facial expression recognition network is built based on a deep convolutional neural network. On a natural facial expression data set, the facial expression recognition network is trained through a loss function to make facial expression features easier to distinguish. Then some key features of input images are actively eliminated by using an improved confrontation elimination method to generate a new data set to train new networks with different weight distributions and feature extraction capabilities, forcing the network to perform expression classification discrimination based on more features, which reduces the influence of interference factors such as occlusion on the network recognition accuracy rate, and improving the robustness of the facial expression recognition network.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: October 31, 2023
    Assignees: Chongqing University, University of Electronic Science and Technology of China, Dibi (Chongqing) Intelligent Technology Research Institute Co., Ltd., Star Institute of Intelligent Systems
    Inventors: Yongduan Song, Feng Yang, Rui Li, Yiwen Zhang, Haoyuan Zhong, Jian Zhang, Shengtao Pan, Siyu Li, Zhengtao Yu
  • Publication number: 20230341869
    Abstract: The present disclosure provides a method and system for path planning of an unmanned vehicle in a three-dimensional terrain and relates to the technical field of path planning. The method includes building a random tree with an initial point of a to-be-planned path as a node; generating a random node based on a goal bias strategy and a multi-sampling strategy; determining a node in the random tree and with a minimum two-dimensional distance from the random node as a nearest node; determining a direction from the nearest node to the random node as an extension direction; determining a point corresponding to a preset step length as a to-be-determined node in the extension direction with the nearest node as a starting point; and updating the random tree or determining a path cut-off random tree through elevation detection and path search cut-off detection, so as to determine the to-be-planned path.
    Type: Application
    Filed: January 13, 2023
    Publication date: October 26, 2023
    Inventors: Jun LUO, Lele DING, Huayan PU, Jie MA, Xuyang ZHENG, Hongliang LIU, Jing HUANG, Yongbing CHEN, Anming SHEN
  • Patent number: 11791078
    Abstract: A method for synchronous production of manganese tetraoxide and ferric oxide for a soft magnetic material by using marine polymetallic nodules includes: 1) crushing and grinding marine manganese nodules and baking to a constant weight; thoroughly mixing with a mixed flux and roasting in a muffle furnace; 2) carrying out solid-liquid separation, washing solid-phase precipitates with water, grinding the solid, adding sulfuric acid, controlling the temperature to be below 50° C., and vacuuming a reactor up; 3) adding a reducing agent to react at room temperature for 5-10 min, adding ammonia water to adjust the pH value to 5.5, and carrying out separation and filtering; 4) controlling the temperatures of manganese sulfate and ferric sulfate solutions to be below 50° C., and adding ammonium sulfide; and 5) washing with deionized water, and calcining at 800-900° C. for 1-3 s by a suspension low-temperature instantaneous firing system.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: October 17, 2023
    Inventors: Shuchun Li, Liang Fu, Fusheng Pan, Xinren Liao, Hualin Xie, Juncai Ma, Ping Li, Zhan Xu, Weipeng Zhang
  • Publication number: 20230324354
    Abstract: An experimental system for a pulsed displacement and replacement of methane with carbon dioxide is provided. The experimental system includes a gas supply system, a pulse control system, a reservoir environment simulation system, a data acquisition and processing system and a tail gas recovery system, connected in sequence; and the carbon dioxide output from the gas supply system is converted into a pulsed gas through the pulse control system, the pulsed gas enters the reservoir environment simulation system to shorten a time of displacing and replacing methane with carbon dioxide, the experimental data of the reservoir environment simulation system is recorded in real time, analyzed and processed by the data acquisition and processing system, a dynamic displacement process is reflected in real time, and a relationship between a displacement evaluation indicator and a displacement time is clarified. The disclosure further provides an experimental evaluation method, using the above experimental system.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 12, 2023
    Inventors: Yiyu Lu, Zhaohui Lu, Jiankun Zhou, Jiren Tang, Yunzhong Jia
  • Publication number: 20230322583
    Abstract: Disclosed is a device for efficiently recycling nickel from wastewater and a method. The device includes a housing, and an extraction unit and an electro-deposition unit which are respectively arranged inside the housing. The device is reasonable in overall structural design. An oscillating and floating component and a rotating component in an extraction cavity are used to fully and uniformly mix a solution to maximize the extraction strength. A mixing component in an electro-deposition cavity is used to accelerate ion dispersion, to better recycle nickel. The device is easy to operate, low in cost and suitable for mass promotion.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 12, 2023
    Applicant: Chongqing University of Arts and Sciences
    Inventors: Wei GUAN, Wen ZENG, Zhongwen OU, Dan SONG, Subo YANG, Yong ZHANG, Bitao LIU, Zhigang XIE
  • Publication number: 20230328935
    Abstract: This disclosure provides a design method for a radiator of a vehicle power module. The design method includes: selecting a plurality of specific values from the possible value ranges of the first distance D1, the second distance D2 and the radius R, respectively, to form different combinations of the plurality of specific values, performing simulation calculations on the different combinations, and obtaining a temperature rise ?Tj and a pressure drop ?Pf corresponding to each combination to form a plurality of samples; through a response surface method, fitting explicit functions of the temperature rise ?Tj and the pressure drop ?Pf with the first distance D1, the second distance D2 and the radius R as dependent variables; and through a multi-objective optimization, determining the first distance D1, the second distance D2 and the radius R with an optimization objective that the temperature rise ?Tj and the pressure drop ?Pf are simultaneously minimized.
    Type: Application
    Filed: April 6, 2023
    Publication date: October 12, 2023
    Applicants: Nexperia Technology (Shanghai) Ltd., Chongqing University, NEXPERIA B.V.
    Inventors: Ke Jiang, Zheng Zeng, Chunlin Zhu, Jiawei Zhang, Richard Qian, Peng Sun, Minhui Ma, Yuxi Liang
  • Patent number: 11782448
    Abstract: A method for obstacle detection and recognition for an intelligent snow sweeping robot is disclosed, comprising: 1) disposing ultrasonic sensors at a front end of the snow sweeping robot to detect distance information from an obstacle ahead; and disposing radar sensors at the front and rear of the snow sweeping robot to detect whether a creature suddenly approaches; 2) processing signals detected by each of the ultrasonic sensors and radar sensors, and calculating a forward distance of the snow sweeping robot; and 3) determining a snow cover extent of a working road, detecting a change of the distance from the obstacles, and recognizing the obstacles for conditions of an ultrasonic ranging variation ratio and a variation of the forward distance of the snow sweeping robot, a change of the signal detected by radar sensors, and a descriptive statistic of the snow cover extent within a specific time period.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: October 10, 2023
    Assignee: Chongqing University
    Inventors: Yongduan Song, Ziqiang Jiang, Shilei Tan, Junfeng Lai, Huan Liu, Li Huang, Jie Zhang, Huan Chen, Hong Long, Fang Hu, Jiangyu Wu, Qin Hu, Wenqi Li
  • Publication number: 20230313682
    Abstract: Disclosed are a hole protection system and a method for coal seam slotting and fracturing combined drainage. The system includes a hydraulic slotting subsystem, a hydraulic fracturing subsystem and a flexible hole protection system. The hydraulic slotting subsystem includes an ultra-high pressure water jet generating module, a drill pipe drilling tool module, an orifice sealer, a gas slag separator and a drilling rig. The hydraulic fracturing system includes an emulsion pump station, a water tank, a hole sealing device, a fracturing string and a casing. The flexible hole protection system includes a front end fixing device, a water injection support pipe, a first flexible support and a water injection connecting section.
    Type: Application
    Filed: March 17, 2023
    Publication date: October 5, 2023
    Applicants: Hancheng Zaozhuang Industrial Co., Ltd., Chongqing University
    Inventors: Xiaoyan SUN, Quanle ZOU, Qican RAN, Peimiao SANG, Jinyan LIANG, Ning LI, Wei PI
  • Patent number: 11777313
    Abstract: The present invention discloses a unit commitment method considering security region of wind turbine generators with frequency response control, and the main steps are: 1) determining security region of wind turbine generators when provides frequency response; 2) based on the security region of the wind turbine generators when provides frequency response, establishing a unit commitment model considering security region of wind turbine generators; and 3) calculating the unit commitment model considering the security region of the wind turbine generators by using mixed-integer linear programming method, and obtaining the operation result of the unit commitment considering the security region of the wind turbine generators with frequency response control. The present invention can be widely used in the setting of frequency response parameters of wind turbine generators dispatched in the prior art and the start-stop and output plans of synchronous generator.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: October 3, 2023
    Assignees: State Grid Qinghai Electric Power Research Institute, Chongqing University, State Grid Qinghai Electric Power Company, State Grid Corporation of China
    Inventors: Yue Fan, Senlin Yang, Juan Yu, Xiaoku Yang, Ling Dong, Jun Kang, Maochun Wang, Yongqiang Han, Zhifang Yang, Rui Song, Xuebin Wang, Juelin Liu, Haiting Wang, Xiaokan Gou, Guobin Fu, Chunmeng Chen, Pengsheng Xie, Yanhe Li, Shichang Zhao, Xuan Wang, Ying Liang, Jun Yang, Shujie Zhang, Ming Xiao, Jiatian Gan, Guoqiang Lu, Yujie Ding, Dongning Zhao, Jia Yang, Ke Liu, Shaofei Wang, Yongfei Ma, Jie Zhang, Aizhen Zhu, Kaixuan Yang, Shuxian Yuan
  • Patent number: 11772326
    Abstract: A partitioned lifting forming type selective laser melting workbench, comprises at least forming platform (1) for powder-spreading and sintering and forming of workpiece, the forming platform (1) comprises forming inner abutment (1-1) and at least one forming outer abutment (1-2) which is sleeved on the forming inner abutment (1-1) and arranged in sequence from the inside to the outside in a radial direction, the forming inner abutment (1-1) and each forming outer abutment (1-2) are arranged in a manner of rise and fall, the forming inner abutment (1-1) or the forming outer abutment (1-2) falls independently, or the forming outer abutment (1-2) and the adjacent forming outer abutment or/and the forming inner abutment (1-1) fall together, it can form an area (2) to be subjected to powder-spreading for laser sintering and forming of workpiece.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: October 3, 2023
    Inventors: Zhengwen Zhang, Peng Zhang, Kaifei Zhang, Zhonghua Li, Zhongfa Mao, Jingwei Dai
  • Patent number: 11766753
    Abstract: The disclosure provides a milling system and method under different lubrication conditions. The system uses a tool to mill the workpiece, a force measuring system to measure the milling force, a tool change system to replace the tools, a tool storage to store the tools. It can store the tools, provide the lubricating oil to the milling surface, select different tools according to different processing conditions, select the best angle differences of the unequal spiral angle tools according to different conditions comprising dry cutting, casting-type lubrication, minimal quantities of lubrication or minimal quantities of nanofluid lubrication, and/or choose the optimal tool according to different cutting parameters in order to obtain the minimum milling force.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: September 26, 2023
    Inventors: Changhe Li, Qingan Yin, Yanbin Zhang, Huajun Cao, Zhenjing Duan, Cong Mao, Wenfeng Ding, Naiqing Zhang, Lan Dong, Xiufang Bai, Menghua Sui, Yonghong Liu, Wentao Wu, Teng Gao, Min Yang, Dongzhou Jia, Runze Li, Yali Hou
  • Patent number: 11769979
    Abstract: An on-chip ultra-narrow linewidth laser and a method for obtaining a single-longitudinal mode ultra-narrow linewidth optical signal are provided in the present invention.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: September 26, 2023
    Assignee: Chongqing University
    Inventors: Tao Zhu, Ligang Huang, Lei Gao, Guolu Yin
  • Patent number: 11765634
    Abstract: The present application relates to the technical field of mobile communications, and specifically relates to an evolutionary game-based multi-user switching method in a software-defined satellite network system. The multi-user switching method comprises: respectively calculating the elevation angle and the remaining coverage time of a satellite according to obtained information, and calculating the payoff according to three basic factors, i.e., the capacity, the elevation angle, and the remaining coverage time of the satellite; a controller calculating the average payoff of users in the area, and broadcasting same to the users; when it is determined that the payoff of all the users is greater than the average payoff, ending multi-user switching; and when it is determined that the payoff of all the users is not greater than the average payoff, the users selecting other switching satellites having higher payoffs.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: September 19, 2023
    Inventors: Yun Li, Guangfu Wu, Mengmeng Liu
  • Patent number: 11747246
    Abstract: Coal rock three-dimensional strain field visual system and method are provided under a complex geological structure. The system includes a stress condition simulation system and a strain monitoring system. The stress condition simulation system includes a similar simulation experiment rack, a loading system and a circular slideway. The method includes preparing a 3D printing wire, printing a strain visual similar model, simulating a stratum dip angle and a gas-containing condition, applying stress fields, recording a cracking and dyeing condition of microcapsules inside the model, and the like. The system can realize tracing the generation and development of internal cracks in simulation models with complex geological conditions, and tracing the three-dimensional movement of internal ink dots to draw four-dimensional images of displacement fields.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: September 5, 2023
    Inventors: Zhiheng Cheng, Haobin Gao, Quanle Zou, Liang Chen, Jiakai Sun, Bichuan Zhang, Fanjie Kong, Biao Liu, Ruizhi Wang
  • Patent number: 11747826
    Abstract: The present disclosure discloses a method for route optimization based on dynamic window and redundant node filtering, comprising using an existing raster map data set to determine the coordinate information of a starting position and a destination position of movement, and to mark a destination node and an obstacle node in the raster map; using A* algorithm to plan a global route; globally optimizing the global route planned by A* algorithm, and filtering redundant nodes out; combining a dynamic window algorithm to perform the local optimization section by section on the optimized global route so as to obtain a final global route. According to the present disclosure, the combination of algorithms reduces a single movement duration of a mobile robot and improves the smoothness of the movement route curve. At the same time, the problems of the robot occurring on the route during the static driving are alleviated.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: September 5, 2023
    Inventors: Yongduan Song, Congyi Zhang, Lihui Tan, Junfeng Lai, Saiyu Wang, Yankai Zhang