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公开(公告)号:US20230304361A1
公开(公告)日:2023-09-28
申请号:US17700555
申请日:2022-03-22
申请人: University of Science and Technology Beijing , Shunde Graduate School, University of Science and Technology Beijing
发明人: Haiping LIU , Qi LV , Dashan SHEN , Donghang HAN , Dongmei ZHU
IPC分类号: E21B17/07
CPC分类号: E21B17/076
摘要: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.
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2.
公开(公告)号:US20240263815A1
公开(公告)日:2024-08-08
申请号:US18596754
申请日:2024-03-06
发明人: Xiaoliang SHAO , Yemin LIU , Chengxu JIN , Yu LIU , Xueying WEN
IPC分类号: F24F9/00 , F24F11/00 , F24F11/65 , F24F11/79 , F24F11/80 , F24F13/075 , F24F120/12
CPC分类号: F24F9/00 , F24F11/0001 , F24F11/65 , F24F11/79 , F24F11/80 , F24F13/075 , F24F2120/12 , F24F2221/38
摘要: The present invention discloses a multi-mode air supply terminal and method for guaranteeing health and comfort of a person, and relates to the technical field of indoor ventilation. The multi-mode air supply terminal includes: a shell body (2) as well as a pore-plate air supply mechanism and an air-curtain air supply mechanism which are installed inside the shell body; the shell body is connected with one end of an air supply branch pipe), the air-curtain air supply mechanism is arranged around the pore-plate air supply mechanism, and an inner wall of the shell body (2) forms an empty cavity (6) with the pore-plate air supply mechanism and the air-curtain air supply mechanism; and the pore-plate air supply mechanism and the air-curtain air supply mechanism are respectively used for controlling opening/closing of a pore-plate air supply port and an air-curtain air supply port to form a plurality of air supply modes.
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3.
公开(公告)号:US20240256829A1
公开(公告)日:2024-08-01
申请号:US18243107
申请日:2023-09-07
发明人: Tianyu HU , Huimin MA , Xiao ZHANG , Hao LIU , Kangsheng WANG
摘要: A wind power generation quantile prediction method based on machine mental model and self-attention includes: using human cognitive decision-making mechanism for reference to construct the machine mental model as the basic framework of WQPMMSA, and then the seasonal power generation rules and intraday power generation trend are encoded into WQPMMSA as the input information of the prediction method, using the self-attention layer to replace the recurrent neural network in the original machine mental model, and establishing the statistical relationship between the seasonal power generation rules and the intraday power generation trend effectively, reducing the long-range forgetting of the original machine mental model-convert the continuous rank probability score in the integral form into a summation form, and using it as a loss function to train WQPMMSA, so that WQPMMSA approaches the optimal quantile prediction result with the highest efficiency. Therefore, accurate quantile prediction of wind power generation is realized.
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公开(公告)号:US20240251399A1
公开(公告)日:2024-07-25
申请号:US18395771
申请日:2023-12-26
发明人: Lei SUN , Yuan ZHU , Jianquan WANG , Wei LI , Sha LI , Yang ZHANG
IPC分类号: H04W72/1263 , H04W72/0446 , H04W72/542 , H04W72/543
CPC分类号: H04W72/1263 , H04W72/0446 , H04W72/542 , H04W72/543
摘要: A 5G-TSN resource joint scheduling apparatus includes: a state information acquisition module, a scheduling decision making module, and a configuration module. The state information acquisition module is configured to acquire bottom-layer network information, and process the acquired bottom-layer network information to obtain state information, the bottom-layer network information includes channel information, gate control list information of a TSN domain, and queue information in a base station. The scheduling decision making module is configured to obtain a result of decision making based on the state information output by the state information acquisition module using a DDPG-based reinforcement learning model, the result of decision making includes whether to allocate resources for a current queue and a number of resources actually allocated to the current queue. The configuration module is configured to convert the result of decision making to one or more instructions understandable by the base station to configure the base station.
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5.
公开(公告)号:US20240175111A1
公开(公告)日:2024-05-30
申请号:US18179362
申请日:2023-03-07
发明人: Chaofang DONG , Li WANG , Decheng KONG , Shiyuan ZHANG , Yucheng JI , Xiaogang LI
IPC分类号: C22C33/02 , B22F10/28 , B22F10/64 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B33Y80/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48
CPC分类号: C22C33/0207 , B22F10/28 , B22F10/64 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B33Y80/00 , C22C33/0285 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48 , B22F2201/02 , B22F2301/35 , B22F2998/10 , B22F2999/00
摘要: An additively manufactured high-strength and high-ductility stainless steel is characterized in that the composition, by weight percentage, C≤0.05 wt %, Si≤1 wt %, Mn≤1 wt %, Cr 14.5-15.5 wt %, Ni 5.0-5.5 wt %, Cu 4-4.5 wt %, Nb 0.35-0.45 wt %, and the balance of Fe and unavoidable impurities. And Cr equivalent of Creq=% Cr+% Mo+2.2% Ti+0.7% Nb+2.48% Al. Ni equivalent of Nieq=% Ni+35% C+20% N+0.25% Cu. The yield strength of the high-strength and high-ductility stainless steel ≥1270 MPa, the tensile strength ≥1380 MPa, and the elongation after fracture ≥15%.
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6.
公开(公告)号:US20240161478A1
公开(公告)日:2024-05-16
申请号:US18130200
申请日:2023-04-03
发明人: Huimin MA , Haizhuang LIU , Yilin WANG , Rongquan WANG
CPC分类号: G06V10/803 , G06T5/002 , G06T7/73 , G06V10/7715 , G06V10/774 , G06V10/806 , G06V20/58 , G06V20/64 , G06T2207/10024 , G06T2207/10028 , G06T2207/20021 , G06T2207/20081 , G06T2207/30196 , G06T2207/30252
摘要: Disclosed are a multimodal weakly-supervised three-dimensional (3D) object detection method and system, and a device. The method includes: shooting multiple two-dimensional (2D) red, green and blue (RGB) images with a camera, acquiring ground points by a vehicle LiDAR sensor and generating a 3D frustum based on 2D box labels on each of the 2D RGB images; filtering ground points in the 3D frustum and selecting a region with most 3D points; generating a 3D pseudo-labeling bounding box of an object according to the region with the most 3D points; training a multimodal superpixel dual-branch network with the 3D pseudo-labeling bounding boxes as labels and the 2D RGB image and the 3D point cloud as inputs; and inputting a 2D RGB image of a current frame and a 3D point cloud of a current scenario to a trained multimodal superpixel dual-branch network to generate an overall 3D point cloud.
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公开(公告)号:US11981979B2
公开(公告)日:2024-05-14
申请号:US18379213
申请日:2023-10-12
发明人: Xinfang Zhang , Baoyu Zhang , Xiaoshan Huang , Mengcheng Zhou , Changhao Liu , Di Zhang , Longge Yan
摘要: A device and method for preparing a low-impurity regenerated brass alloy through step-by-step insertion of an electrode are provided. The device includes a melt heating apparatus, an electrode displacement apparatus, and a pulse current generation apparatus. The automatic electrode lifting apparatus is controlled to adjust an insertion depth of the graphite electrode plate in the metal melt, and the pulse current generation apparatus is controlled to adjust the parameters of pulse current to achieve the impurity reduction on the metal melt. The preparation of a low-impurity regenerated brass alloy involves a short production process, simple operations, low energy consumption, and high impurity removal efficiency, and is suitable for regeneration and large-scale continuous production of non-ferrous metal alloys.
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公开(公告)号:US11976914B1
公开(公告)日:2024-05-07
申请号:US18370545
申请日:2023-09-20
申请人: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
发明人: Renshu Yang , Yanbing Wang , Chengxiao Li , Zhaoran Zhang , Xinmin Ma , Hang Zhang , Zhouqi Bao
摘要: An efficient blasting method for similar cutting in a rock tunnel is provided, which relates to the technical field of rock tunneling. The method includes the following steps: drilling: drilling central holes, lower cutting holes, upper cutting holes, auxiliary holes and peripheral holes in a cross section area for tunnel construction; filling explosives: filling explosives into the central holes, the lower cutting holes, the upper cutting holes, the auxiliary holes and the peripheral holes; and blasting: blasting following blast holes in turn to complete full-face one-time blasting in a millisecond delay blasting mode. The method is applicable for construction scenes of drilling and blasting methods.
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公开(公告)号:US11976557B2
公开(公告)日:2024-05-07
申请号:US17890406
申请日:2022-08-18
申请人: University of Science and Technology Beijing , North China Institute of Science and Technology , Beijing Anke Xingye Science and Technology Co., Ltd.
发明人: Sitao Zhu , Gaoang Wang , Fuxing Jiang , Gang Yao , Tao Zhou , Jinhai Liu , Huan Li , Zhen Kong , Qingbo He , Xiaocheng Qu , Quande Wei , Yitong Huang , Shaohua Sun
IPC分类号: E21C37/12
CPC分类号: E21C37/12
摘要: The present disclosure provides a coal bump control method for sectional hydraulic fracturing regions of a near vertical ultra thick coal seam. The method includes: deepening a main shaft from a mining level to a fracturing level; excavating a cross-hole from a roof rock layer of a coal seam at the fracturing level to enter a coal seam being mined, and excavating a roadway along the strike of the coal seam; and drilling hydraulic fracturing boreholes in a dedicated fracturing roadway along an inclination angle of the coal seam to the coal seam above the roadway, wherein the length of the borehole makes the borehole in communication with a goaf, and the spacing of the boreholes along the strike and the sectional spacing of the boreholes in an inclination direction are designed according to the parameters of fracturing equipments and the fracturing length.
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公开(公告)号:US11943793B2
公开(公告)日:2024-03-26
申请号:US17537542
申请日:2021-11-30
发明人: Haijun Zhang , Wanqing Guan , Dong Wang , Tongwei Lu , Xiangming Wen , Keping Long
CPC分类号: H04W72/535 , G06N20/00 , H04L47/6225 , H04W72/23
摘要: An Artificial Intelligence (AI) engine-supporting downlink radio resource scheduling method and apparatus are provided. The AI engine-supporting downlink radio resource scheduling method includes: constructing an AI engine, establishing a Socket connection between an AI engine and an Open Air Interface (OAI) system, and configuring the AI engine into an OAI running environment to utilize the AI engine to replace a Round-Robin scheduling algorithm and a fair Round-Robin scheduling algorithm adopted by a Long Term Evolution (LTE) at a Media Access Control (MAC) layer in the OAI system for resource scheduling to take over a downlink radio resource scheduling process; sending scheduling information to the AI engine through Socket during the downlink radio resource scheduling process of the OAI system; and utilizing the AI engine to carry out resource allocation according to the scheduling information, and returning a resource allocation result to the OAI system.
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