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公开(公告)号：US11442187B2
公开(公告)日：2022-09-13
申请号：US16833084
申请日：2020-03-27
Applicant: Dalian University of Technology
Inventor： Shibin Tang , Jiaming Li
Abstract: The present invention discloses a microseismic wireless monitoring, receiving and early warning system of rock, which is connected with microseismic intelligent acquisition and data wireless transmission systems of rocks through a satellite. The microseismic wireless monitoring, receiving and early warning system of rock comprises a wireless receiving module, used for receiving a microseismic data packet processed by each microseismic signal wireless transmission system of rock through the satellite; a storage module, connected with the wireless receiving module, internally saving basic data information of each microseismic signal transmission system of the rock, automatically and correspondingly storing the microseismic data packet in real time and managing the microseismic data packet; a processing module, connected with the storage module and used for computing and analyzing to obtain microseismic source level information of a rock breakage signal and transmitting the information to the storage module to be stored.
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公开(公告)号：US11436395B2
公开(公告)日：2022-09-06
申请号：US16629752
申请日：2018-06-27
Applicant: Dalian University of Technology
Inventor： Shuo Zhang , Xiaoyu Sun , Jibang Li , Ximing Sun
Abstract: A method for prediction of key performance parameters of an aero-engine transition state acceleration process based on space reconstruction. Aero-engine transition state acceleration process test data provided by a research institute is used for establishing a training dataset and a testing dataset; dimension increase is conducted on the datasets based on the data space reconstruction of an auto-encoder; model parameters optimization is conducted by population optimization algorithms which is represented by particle swarm algorithm; and random forest regression algorithm performing well on high-dimensional data is used for carrying out regression on transition state performance parameters, which realizes effective real-time prediction from the perspective of engineering application.
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公开(公告)号：US11433999B2
公开(公告)日：2022-09-06
申请号：US16769482
申请日：2019-04-26
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Ximing Sun , Hongyang Zhao , Zhuocheng Jiang
Abstract: A vehicle capable of taking off and landing vertically and operating in water, land, air and submarine environments includes a fuselage, two main wings, ailerons, a vertical tail, a rudder, a horizontal tail, elevators, a propeller, rotor wings, rotor wing supports, etc. The vehicle has the advantages of adaptability to various environments, good concealment and strong survivability. Compared with a traditional unmanned rotorcraft, the vehicle has longer endurance time and larger load. Compared with a fixed wing UAV, the vertical take-off and landing function makes the work more convenient. Compared with unmanned diving equipment, the vehicle is applicable to richer environments, and can complete designated missions in air, land, water and submarine environments. Compared with a tilt rotor UAV in water, land, air and submarine environments, the vehicle is rapider in switching of various modes and is higher in stability.
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公开(公告)号：US20220230326A1
公开(公告)日：2022-07-21
申请号：US17415621
申请日：2020-07-23
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Yongchen SONG , Yanghui LI , Peng WU , Xiang SUN , Weiguo LIU , Jiafei ZHAO , Mingjun YANG , Lei YANG , Zheng LING
Abstract: The present invention belongs to the technical field of petroleum exploitation engineering, and discloses a 3D modeling method for cementing hydrate sediment based on a CT image. Indoor remolding rock cores or in situ site rock cores without hydrate can be scanned by CT; a sediment matrix image stack and a pore image stack are obtained by gray threshold segmentation; then, a series of cementing hydrate image stacks with different saturations are constructed through image morphological processing of the sediment matrix image stack such as dilation, erosion and image subtraction operation; and a series of digital rock core image stacks of the cementing hydrate sediment with different saturations are formed through image subtraction operation and splicing operation to provide a relatively real 3D model for the numerical simulation work of the basic physical properties of a reservoir of natural gas hydrate.
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公开(公告)号：US20220230322A1
公开(公告)日：2022-07-21
申请号：US17336702
申请日：2021-06-02
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Wen DONG , Xin YANG , Haiyang MEI , Xiaopeng WEI , Qiang ZHANG
Abstract: The invention belongs to scene segmentation's field in computer vision and is a depth-aware method for mirror segmentation. PDNet successively includes a multi-layer feature extractor, a positioning module, and a delineating module. The multi-layer feature extractor uses a traditional feature extraction network to obtain contextual features; the positioning module combines RGB feature information with depth feature information to initially determine the position of the mirror in the image; the delineating module is based on the image RGB feature information, combined with depth information to adjust and determine the boundary of the mirror. This method is the first method that uses both RGB image and depth image to achieve mirror segmentation in an image. The present invention has also been further tested. For mirrors with a large area in a complex environment, the PDNet segmentation results are still excellent, and the results at the boundary of the mirrors are also satisfactory.
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Patent Agency Ranking
公开(公告)号：US20220219487A1
公开(公告)日：2022-07-14
申请号：US17401352
申请日：2021-08-13
Applicant: Dalian University of Technology
Inventor： Xiaoxu WANG , Kangsheng LAI , Jinglong WANG
IPC: B60B11/02
Abstract: The present disclosure belongs to the technical field of walking mechanisms, and provides a smooth obstacle-crossing walking mechanism, which can provide strong smooth obstacle crossing capability, meanwhile, maintains lower friction loss and higher efficiency, and is suitable for most daily use situations. A smooth obstacle-crossing walking mechanism includes a driving wheel and a contact wheel. The driving wheel has a wheel diameter lower than that of the contact wheel. The driving wheel compresses an inner edge of the contact wheel under gravity. The contact wheel is in contact with the ground surface. When the driving wheel rotates actively, it walks along the inner edge of the contact wheel under the frictional force with the contact wheel. The contact wheel rolls forwards under a pressure and the frictional force of the driving wheel, so as to enable the smooth obstacle-crossing walking mechanism to walk.
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97.发明申请公开(公告)号：US20220212280A1
公开(公告)日：2022-07-07
申请号：US17594743
申请日：2020-03-10
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Gang SONG , Liming LIU , Zhaodong ZHANG , Hongyang WANG , Daxin REN
IPC: B23K11/06
Abstract: A welding-rolling integrated composite forming method uses the low heat input wire filling welding method to cooperate with the optimization of the welding process, and at the same time the rolling device is used to roll the weld reinforcement area of the welded joint, realizing the precise control of the structure and properties of each area of the welded joint by using the plastic flow and deformation strengthening effect of the weld reinforcement of the welded joint during rolling process. The integrated composite forming device adjusts the distances between the welding mechanism, the rolling mechanism and the metal sheet to-be-welded and rolled by the coordination of each mechanism, and carries out synchronous rolling on the weld reinforcement of the welded joint.
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98.发明授权公开(公告)号：US11380446B2
公开(公告)日：2022-07-05
申请号：US16725197
申请日：2019-12-23
Applicant: Dalian University of Technology
Inventor： Tongmin Wang , Yiping Lu , Tingju Li , Zhiqiang Cao , Huanzhi Zhang , Jinchuan Jie , Huijun Kang , Yubo Zhang , Zongning Chen , Enyu Guo
Abstract: A radiation resistant high-entropy alloy is provided, having an FCC structure, defined by general formula of FeCoNiVMoTixCry, where 0.05≤x≤0.2, 0.05≤y≤0.3, x and y are molar ratios. The radiation resistant high-entropy alloy has excellent irradiation resistance and is subject to radiation hardening saturation at high temperature (600° C.) in a condition of a high dose (1-3×1016 ions/cm2) of helium ion irradiation. A lattice constant of the high-entropy alloy decreases abnormally after irradiation. The high-entropy alloy has a radiation resistance far higher than that of a conventional alloy and has an excellent plasticity and specific strength. In an as-cast condition and at room temperature, a tensile break strength of the high-entropy alloy is higher than 580 MPa, an engineering strain (a tensile elongation) of the high-entropy alloy is greater than 30%.
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公开(公告)号：US20220198712A1
公开(公告)日：2022-06-23
申请号：US17604185
申请日：2020-03-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY , PENG CHENG LABORATORY
Inventor： Wei ZHONG , Deyun LV , Weiqiang KONG , Risheng LIU , Xin FAN , Zhongxuan LUO , Shengquan LI
Abstract: The present invention discloses a method for adaptively detecting chessboard sub-pixel level corner points. Adaptive detection of chessboard sub-pixel level corner points is completed by marking position of an initial unit grid on a chessboard, using a homography matrix H calculated by pixel coordinates of four corner points of the initial unit grid in a pixel coordinate system and world coordinates in a world coordinate system to expand outwards, adaptively adjusting size of an iteration window in the process of expanding outwards, and finally spreading to the whole chessboard region.
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公开(公告)号：US20220170375A1
公开(公告)日：2022-06-02
申请号：US17433985
申请日：2020-12-15
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Dong LV , Nan WANG , Xiaofang WANG , Xingao KONG , Yinan SUN
IPC: F01D5/18
Abstract: The present invention belongs to the technical field of turbine cooling of aero-engine and gas turbine, and relates to the honeycomb-like helically cavity cooling structure of turbine blade. The honeycomb-like helically cavity cooling structure of turbine blade includes hollow turbine blade, honeycomb-like helically cavity and pin fins. Some cooling channels are arranged inside the hollow the hollow turbine blade, the cooling gas flows through the tunnels and cools the blade. Multi-arrays of honeycomb-like helically cavity are arranged in the blade wall, for cooling gas to enter and convective cooling. A cylindrical pin fin is arranged in the center of the honeycomb-like helically cavity. In each unit, the inlet hole and film hole are located on both sides of the blade wall, and the center lines of them are parallel in the same vertical plane.
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