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公开(公告)号：US11898902B1
公开(公告)日：2024-02-13
申请号：US18448511
申请日：2023-08-11
申请人： QINGDAO INNOVATION AND DEVELOPMENT CENTER OF HARBIN ENGINEERING UNIVERSITY , HARBIN ENGINEERING UNIVERSITY
发明人： Yongyao Chen , Xin Wang , Junjie Li , Zedong Ma , Liang Zhang
摘要： Provided is a swim bladder bionic amphibious optical fiber ocean acoustic sensor, belonging to the field of optical fiber ocean sensors, consisting of a sound sensitive diaphragm, a diaphragm supporting shell, a section of coated optical fiber, a single-hole optical fiber sleeve and a single-mode optical fiber. An upper surface of the supporting shell is provided with two symmetrical overflow holes, and a structure includes a back cavity communicated with the overflow holes. A medium in the back cavity of the sensor may be replaced by inflating, deflating and filling water through the overflow holes, to achieve impedance matching with external environments. When the back cavity is inflated, the sensor serves as a fiber-optic microphone, and when the back cavity is deflated and filled with water, the sensor serves as a fiber-optic hydrophone. The working states could be switched flexibly to achieve a working mode like a swim bladder.
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公开(公告)号：US11940573B1
公开(公告)日：2024-03-26
申请号：US18446877
申请日：2023-08-09
申请人： QINGDAO INNOVATION AND DEVELOPMENT CENTER OF HARBIN ENGINEERING UNIVERSITY , HARBIN ENGINEERING UNIVERSITY
发明人： Yongyao Chen , Xin Wang , Junjie Li , Liang Zhang , Zedong Ma
CPC分类号： G01S7/524 , G01S7/52092 , G01S7/521
摘要： A navigation-communication-integrated metamaterial sonar for underwater vehicles is provided, and belongs to the field of ocean detection and communication. The metamaterial sonar is a metamaterial composite structure including a group of disc array with the same diameters, a disc backboard and water gaps. By adjusting the period p of the disc array, a board thickness t1 of each disc, the thickness g of each water gap, the radius w1 of the disc array, the radius w2 and the thickness t2 of the backboard, the working states of underwater navigation and underwater acoustic communication may be flexibly switched by changing working frequencies, and the navigation-communication-integrated sonar may be realized.
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公开(公告)号：US12049766B1
公开(公告)日：2024-07-30
申请号：US18524645
申请日：2023-11-30
申请人： Harbin Engineering University , North China Electric Power University , Shenyang University of Technology
发明人： Jianhua Zhang , Ke Sun , Shuaizheng Wang , Zhichuan Li , Dianwei Gao , Lei Qi , Ning Li , Chao Tang , Yongqian Liu , Hang Meng
CPC分类号： E04H12/20 , F03D13/256 , F05B2240/93
摘要： A tensegrity offshore wind power generation support structure is provided, relating to the technical field of offshore wind power. The support structure includes inclined columns, prestressed cables, a rigid support, a floating foundation and anchoring systems. A stable self-balancing space supporting structure is formed by the inclined columns and the cables; the inclined columns inclines outwards, upper parts of the inclined columns are connected with the prestressed cables; the bottom ends of the inclined columns are connected with the floating foundation; the middle parts of the inclined columns are connected with the rigid support; and the floating foundation is fixed with a seabed through the anchoring systems. According to the support structure, a tower in the traditional design is not needed, and all the cables are ensured to be in a tension state through the support of the inclined columns.
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公开(公告)号：US11988180B2
公开(公告)日：2024-05-21
申请号：US17958933
申请日：2022-10-03
发明人： Jianhui Zhao , Xiangdong Lu , Heng Zhang , Yu Xu , Weilong Liu
CPC分类号： F02M51/0621 , F02M51/0635 , H01F7/122 , H01F7/1615
摘要： The present invention provides a permanent magnet-electromagnet synergistic coupling-based high-speed solenoid valve with a high dynamic response and a low rebound, including a shell and an iron core. The iron core is installed in the shell, an axial center through hole is formed in a middle of the iron core, a spring limiting sleeve is installed in the axial center through hole, an armature and a reset spring cavity are sequentially formed below the iron core, an upper portion of a valve rod is located in the spring limiting sleeve, an upper disc permanent magnet, a lower disc permanent magnet and a spring washer are arranged in the spring limiting sleeve, and a giant magnetostrictor is installed between the upper disc permanent magnet and the lower disc permanent magnet. By means of the present invention, electromagnetic force generated during pickup of the armature can be effectively improved.
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公开(公告)号：US20240132731A1
公开(公告)日：2024-04-25
申请号：US18475634
申请日：2023-09-27
发明人： Jun WANG , Zhixin WANG , Dalei SONG , Rongrong CHEN , Qi LIU , Jingyuan LIU , Jing YU , Jiahui ZHU , Gaohui SUN
IPC分类号： C09D5/16 , C09D183/08
CPC分类号： C09D5/1637 , C09D5/1681 , C09D183/08
摘要： Provided are a surface zwitterionized silicone antifouling coating and a preparation method thereof. In the disclosure, hydroxyl-terminated polydimethylsiloxane and N-aminoethyl-3-aminopropyl methyl dimethoxysilane are used as raw materials, and tetramethylammonium hydroxide pentahydrate is used as a catalyst, thereby preparing a series of polydimethylsiloxane resins containing amino side chains in different proportions; then side chain amino modified polydimethylsiloxane is crosslinked and cured by using 3-glycidyloxypropyltrimethoxysilane as a curing agent; after that, the cured silicone coating is soaked in a solution of 1,3-propane sultone in acetone for ionization.
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公开(公告)号：US20240077608A1
公开(公告)日：2024-03-07
申请号：US18383150
申请日：2023-10-24
发明人： Haichao LI , Jiawei XU , Fuzhen PANG , Cong GAO , Yuhang TANG , Jiajun ZHENG , Xueren WANG , Zhe ZHAO , Xuhong MIAO , Yuan DU
CPC分类号： G01S15/006 , G06F30/20
摘要： Disclosed are a method and system for evaluating sonar self-noise at a ship design stage. The method includes: building a ship structure full-scale geometric simulation model; acquiring loss factors and sonar transducer space outfitting acoustic absorption coefficient material parameters; acquiring mechanical excitation, hydrodynamic excitation, and propeller excitation; inputting the loss factors and the sonar transducer space outfitting acoustic absorption coefficient material parameters into an established statistical energy evaluation model, and applying a mechanical excitation to a face plate of foundation of the built ship structure full-scale geometric simulation model, applying a hydrodynamic excitation to the surface of a ship hull, and applying a propeller excitation to a stern shaft to perform calculation of sonar self-noise of a ship to obtain total spectral density level of the sonar self-noise; and evaluating spectral density level calculation results by index requirements. The method is applicable in risk evaluation of sonar self-noise indexes.
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7.发明公开公开(公告)号：US20240052849A1
公开(公告)日：2024-02-15
申请号：US18449065
申请日：2023-08-14
发明人： Chen LIU , Zequn MA , Yipeng CAO , Runze ZHANG , Xinyu ZHANG , Wenping ZHANG , Jie YANG , Changhong SUN , Jie GUO , Xiaochen ZHAO , Gongmin LIU
CPC分类号： F04D29/4206 , F04D29/685 , F05D2220/40
摘要： Some embodiments of the disclosure provide an air intake bypass recirculation structure with adjustable air entraining amount and controllable broadband noise which includes main body of the air intake bypass recirculation structure and an air entraining amount adjusting structure. In some examples, an air intake bypass recirculation cavity is formed in the main body of the air intake bypass recirculation structure. An air inlet of an air intake pipe and an air outlet of the air intake pipe are formed in two ends of the main body of the air intake bypass recirculation structure respectively. An airflow inlet of the air intake bypass recirculation structure and an airflow outlet of the air intake bypass recirculation structure are formed in the inner side of the main body of the air intake bypass recirculation structure. The air entraining amount adjusting structure is arranged in the air intake bypass recirculation cavity.
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公开(公告)号：US11831746B2
公开(公告)日：2023-11-28
申请号：US17444901
申请日：2021-08-11
发明人： Yingfei Zan , Lihao Yuan , Shenghua Zhong , Duanfeng Han , Haitao Zhu
IPC分类号： H04L7/00
CPC分类号： H04L7/0012
摘要： The invention belongs to the technical field of time synchronization of computer co-simulation, and particularly relates to a time consistency synchronization method for distributed simulation. According to the time consistency synchronization method, a most appropriate master clock is selected according to votes, and then the other clocks in a network are controlled to synchronize by using the master clock, so that the consistency of data of each node and a time-related event in time logic is ensured. Even if a certain simulation node goes down, influences on the other links of the whole system are relatively small, which can effectively perform decentration, ensure the time consistency to the greatest extent, and ensure the correctness and the scale of a whole distributed system.
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公开(公告)号：US11806674B1
公开(公告)日：2023-11-07
申请号：US18124024
申请日：2023-03-21
发明人： Jun Wang , Jiaqi Yu , Qi Liu , Hongsen Zhang , Jingyuan Liu , Rongrong Chen , Jing Yu , Jiahui Zhu , Rumin Li , Peili Liu
CPC分类号： B01D67/0079 , B01D69/02 , B01D71/42 , B01D2323/02 , B01D2325/36 , C22B60/0265
摘要： A high flux antibacterial polyacrylonitrile-based uranium-extraction-from-seawater-seawater desalination cogeneration membrane and a preparation method thereof are disclosed. To satisfy demand of uranium-extraction-from-seawater-seawater desalination cogeneration application, polyacrylonitrile, chitosan and amidoxime modified polyacrylonitrile are taken as raw materials and a proportion of raw materials of a casting membrane are optimized in a membrane forming process. The conversion rate of polyacrylonitrile is adjusted so that formation of an amidoxime modified polyacrylonitrile powder in a casting membrane liquid mixing system is regulated and controlled, thereby significantly improving the mechanical properties, the flux, the hydrophilicity, the antibacterial property and the uranium adsorptive property. A compound cogeneration membrane composed of a top membrane, a clipping membrane and a bottom membrane are also prepared according to actual function characteristics of seawater and the membrane material, and the uranium-extraction-from-seawater-seawater desalination performance of the membrane material is integrally improved.
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10.发明公开公开(公告)号：US20230341547A1
公开(公告)日：2023-10-26
申请号：US18120609
申请日：2023-03-13
发明人： Shengchun PIAO , Yunjia SHI , Junyuan GUO , Minghui ZHANG
摘要： The present disclosure belongs to the field of underwater target detection, and in particular, to a method for detecting a moving target based on spatial slices of transformed spatio-temporal frequency space. The method includes: segmenting a target radiated acoustic signal received by an M-element horizontal line array in an underwater acoustic environment with a low signal-to-noise ratio (SNR); performing N-point discrete Fourier transform (DFT) on the received signal on each array element in each period of time; performing frequency domain beamforming on an array signal after each section of DFT, and performing stacking after compensating a phase difference between arrays brought by an azimuth of each primitive element; performing coordinate transformation on a frequency-azimuth-time three-dimensional (3D) matrix space obtained; taking a slice from the obtained frequency-azimuth-time 3D space subjected to the coordinate transformation; and performing segmented Radon transform on the spatial slice obtained to detect the target.
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