Patents by Inventor Qian Jia
Qian Jia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12218500Abstract: A method for analytically studying fault responses of an inverter-interfaced renewable energy source (IIRES). The IIRES includes a decoupled sequence control (DSC) system, and the DSC system includes a converter, a current controller, a low-voltage ride-through (LVRT) control unit, and positive and negative sequence components calculation (PNSCC) structures. The method includes: determining a detailed fault model of the IIRES; determining a unified model of the PNSCC structures; determining a simplified fault model of the IIRES in a fault detection phase; determining a simplified fault model of the IIRES in a control transient response (CTR) phase; detecting a short-circuit fault; cutting off an outer loop of the DSC system; switching the DSC system to a current control mode through the LVRT unit by the current controller; analyzing the short-circuit fault; and designing an enhanced fault-ride-through control of the IIRESs to suppress an inrush current to protect the IIRES.Type: GrantFiled: May 1, 2024Date of Patent: February 4, 2025Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Ke Jia, Qian Liu, Hao Liu, Cheng Wang
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Patent number: 12211267Abstract: The present disclosure provides a method, apparatus, medium and device for extracting a river drying-up region and frequency, and belongs to the technical field of remote sensing. The method for extracting a river drying-up region and frequency can be applied to efficiently acquiring river drying-up information for a long time within the large spatial region. With the inverse normalized difference water index (iNDWI) and the maximum value composite (MVC) method for the remote sensing images, the present disclosure omits the troublesome step of separately extracting a river range for each image in the conventional method. In addition, the present disclosure quickly obtains the drying-up frequency by counting the total number of available images and the number of non-water images at the same pixel position, and yields a greater efficiency for extracting the river drying-up region and frequency.Type: GrantFiled: April 26, 2022Date of Patent: January 28, 2025Assignees: Satellite Application Center for Ecology and Environment, MEE, Wuhan UniversityInventors: Chen Wang, Jixi Gao, Chao Wang, Jianhui Zhang, Xuelei Wang, Yihuang Nie, Xing Jia, Huan Zhao, Shoujing Yin, Qian Zhao, Xiaogang Zhang, Yanting Wu, Dan Xu, Hao Sun, Nan Wang, Hongyan Yang, Bin Meng, Yaming Zhou
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Patent number: 12206242Abstract: A method for protecting a power system having inverter-interfaced renewable energy sources is provided. The power system includes an inverter and a control system. The control system includes a current controller including a saturation limiter and a proportional and integral (PI) controller, a phase-locked system, and a low-voltage ride-through (LVRT) control unit. The method includes: by using a Park transformation matrix, determining an output voltage of the inverter; determining a modulated voltage of the output voltage; upon detecting a grid fault, obtaining current references by the LVRT control unit; determining a fault current in a first stage of a transient phase of the grid fault; determining a fault current in a second stage of the transient phase; determining a fault current in a third stage of the transient phase; and switching the control system to a fault control mode by tracking the fault currents in the first, second and third stages, to the current references.Type: GrantFiled: December 11, 2023Date of Patent: January 21, 2025Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Ke Jia, Qian Liu, Hao Liu, Cheng Wang
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Publication number: 20250017047Abstract: A display panel is provided. The display panel includes a base substrate; a separation structure on the base substrate; a recess extending into the separation structure; a color filter on a side of the separation structure away from the base substrate; and a lens layer including a plurality of lenses and on a side of the color filter away from the base substrate. An orthographic projection of a respective lens on the base substrate partially overlaps with an orthographic projection of the separation structure on the base substrate. The recess includes a first recess portion and a second recess portion connected with each other. In plan view of the display panel, a gap between two adjacent lenses of the plurality of subpixels is in a region at least partially overlapping with a region having both the first recess portion and the second recess portion.Type: ApplicationFiled: March 31, 2023Publication date: January 9, 2025Applicant: BOE Technology Group Co., Ltd.Inventors: Xuefei Sun, Jaegeon You, Qian Jia, Yingtao Wang, Tingting Zhou, Xinxing Wang
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Publication number: 20240371913Abstract: A light-emitting diode includes a base and light-emitting devices including a first light-emitting device, a second light-emitting device, and a third light-emitting device. The area of the first light-emitting device, the area of the second light-emitting device, and the area of the third light-emitting device decrease in order. Each light-emitting device includes a light-emitting stacked layer. In two adjacent light-emitting devices, at least one light-emitting device further includes a first reflective layer provided between a light-emitting stacked layer of the light-emitting device to which the first reflective layer belongs and another light-emitting device. The first reflective layer covers a first region and exposes at least a portion of a second region, the first region being a region where the two adjacent light-emitting devices overlap with each other, and the second region being a region where the two adjacent light-emitting devices are non-overlapping with each other.Type: ApplicationFiled: July 15, 2024Publication date: November 7, 2024Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yingtao WANG, Qian JIA, Tingting ZHOU, Xuefei SUN, Jaegeon YOU, Haokun LI
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Publication number: 20240363813Abstract: Provided in the present disclosure are a light-emitting substrate and a display apparatus. The light-emitting substrate includes: a driving backplane; a plurality of light-emitting chips, arranged on the driving backplane in an array, where the light-emitting chip includes a buffer layer, an N-type semiconductor layer, a multi-quantum well layer, and a P-type semiconductor layer sequentially arranged on the driving backplane in a stacked manner; and a grating structure, on a side of the plurality of light-emitting chips facing away from the driving backplane, where the grating structure has a plurality of regions, and the regions are configured to transmit light of different wavelength bands.Type: ApplicationFiled: July 9, 2024Publication date: October 31, 2024Inventors: Xuefei SUN, Tingting ZHOU, Qian JIA, Yingtao WANG, Haokun LI, Xinxing WANG, Jaegeon YOU
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Publication number: 20240324380Abstract: A touch structure includes a metal mesh including a plurality of metal conductive lines. The metal mesh has a plurality of openings, each opening is enclosed by metal conductive lines, and a shape of each opening is asymmetric.Type: ApplicationFiled: September 21, 2022Publication date: September 26, 2024Inventors: Xuefei Sun, Xinxing Wang, Kuanjun Peng, Jaegeon You, Yingtao Wang, Qian Jia, Liyan Liu, Honghui Lin
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Publication number: 20240276846Abstract: Embodiments of the disclosure provide a touch structure, a display substrate and a display panel, where the touch structure includes: a metal mesh including a plurality of metal wires, where the metal mesh has a plurality of openings, each of the openings is surrounded by a plurality of metal wires, and the plurality of metal wires surrounding each of the openings have at least three different extending directions.Type: ApplicationFiled: April 26, 2022Publication date: August 15, 2024Inventors: Yingtao WANG, Xinxing WANG, Liyan LIU, Xuefei SUN, Jaegeon YOU, Qian JIA, Kuanjun PENG
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Publication number: 20240088328Abstract: A light-emitting device, a light-emitting substrate, and a method for manufacturing the light-emitting device. The light-emitting device includes at least one light-emitting structure. The light-emitting structure includes: a first semiconductor layer; a light-emitting layer; a second semiconductor layer, doping ions of the second semiconductor layer and a first semiconductor layer being oppositely charged; a barrier structure provided with an opening for exposing the second semiconductor layer, the orthographic projection of the opening on the base substrate being located in the orthographic projection of the light-emitting layer on the base substrate, and the area of the opening being smaller than that of the light-emitting layer; and a landing electrode located on the side of the barrier structure facing away from the second semiconductor layer, the landing electrode being in contact with the second semiconductor layer by means of the opening.Type: ApplicationFiled: October 22, 2021Publication date: March 14, 2024Inventors: Bin QIN, Kuanjun PENG, Weixing LIU, Fangzhen ZHANG, Xue DONG, Jintao PENG, Wanpeng TENG, Xiaolong LI, Shuang SUN, Wanzhi CHEN, Guangcai YUAN, Qian JIA
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Patent number: 11927217Abstract: The present disclosure discloses a method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films, which is based on the use of nano metal-coated steel balls and diamond-like films with a hydrogen content of 25-30% as the matching pair. Further, a tribochemical reaction occurs through the catalytic action of nano metal during the friction process to form a nano graphene transfer film with incommensurate contact at the contact interface to achieve macroscopic super-lubrication.Type: GrantFiled: June 24, 2021Date of Patent: March 12, 2024Assignee: LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Junyan Zhang, Qian Jia, Bin Zhang, Xingkai Zhang, Yuanlie Yu
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Patent number: 11613806Abstract: A method for preparing an ammonium thiomolybdate-porous amorphous carbon composite superlubricity film is disclosed. First, a porous amorphous carbon film is prepared by an anode layer ion source assisted plasma chemical vapor deposition method and a reactive magnetron sputtering method on a substrate. The porous amorphous carbon film is then impregnated in an ammonium thiomolybdate solution, so that the ammonium thiomolybdate is adsorbed on the porous amorphous carbon film, and the impregnated porous amorphous carbon film is air dried.Type: GrantFiled: July 14, 2021Date of Patent: March 28, 2023Assignee: LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Bin Zhang, Qian Jia, Junyan Zhang, Yuanlie Yu, Kaixiong Gao, Xingkai Zhang
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Patent number: 11573443Abstract: A liquid crystal display panel, including a liquid crystal cell, a liquid crystal, a light-transmitting cover plate and a light-transmitting support structure; where the liquid crystal is located in the liquid crystal cell, the cover plate covers a side where a target surface for emitting light is located of the liquid crystal cell, and the support structure is located between the cover plate and the liquid crystal cell; and an orthogonal projection region of the support structure on the target surface is a partial region of the target surface, and the partial region comprises at least part of an active display region of the target surface.Type: GrantFiled: March 10, 2020Date of Patent: February 7, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Qian Jia, Xinxing Wang, Yingtao Wang, Xuefei Sun, Xiaona Xu
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Publication number: 20230032184Abstract: An electromagnetic separation type coating device is provided, and belongs to the technical field of vacuum coating. The device comprises a main vacuum cavity, the front side and the rear side of the main vacuum cavity are each provided with a vacuum cavity door, middle positions of the front vacuum cavity door and the rear vacuum cavity door are each provided with a set of magnetron sputtering targets, and the two sets of magnetron sputtering targets are symmetrically arranged; two sets of ion sources are symmetrically arranged on the outer walls of the left side and the right side of the main vacuum cavity, and two sets of magnetic induction coils are symmetrically arranged at two sides of each set of ion sources, respectively; a vacuum pump set is connected to the top of the main vacuum cavity, a workpiece rest is installed at the bottom in the main vacuum cavity, and is used for installing a to-be-deposited sample piece; and an auxiliary anode is further installed in the main vacuum cavity.Type: ApplicationFiled: March 25, 2022Publication date: February 2, 2023Inventors: Bin ZHANG, Qian JIA, Junyan ZHANG, Kaixiong GAO
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Patent number: 11291736Abstract: The pH-responsive ultrasensitive fluorescent nanoprobe is composed of pH-responsive matrix materials and fluorescent organic small molecule dyes. The pH-responsive matrix materials are calcium phosphate, calcium hydroxyphosphate, fluorapatite, calcium carbonate or ZIF series; the fluorescent organic small molecule dyes are positively charged dyes or negatively charged dyes. The preparation method includes: coating a positively charged dye with a negatively charged matrix material; coating a negatively charged dye with a negatively charged matrix material; and coating a negatively charged dye with a positively charged matrix material.Type: GrantFiled: November 15, 2017Date of Patent: April 5, 2022Assignee: XIDIAN UNIVERSITYInventors: Zhongliang Wang, Yongdong Wang, Ruili Zhang, Qian Jia, Chaoqiang Qiao, Jie Tian
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Patent number: 11282177Abstract: The present disclosure relates to a moire quantitative evaluation method. The method includes obtaining an image of a first pattern layer; obtaining coordinates of each of the first image units; according to the coordinates of each of the first image units and a thickness and a refractive index of a dielectric layer, determining coordinates of projection image units each of which corresponds to a corresponding one of the first image units along an oblique view light path; determining a pixel value of each of the projection image units according to pixel values of second image units in each of the surrounding regions to obtain an oblique view image; superimposing the image of the first pattern layer and the oblique view image to obtain a first superimposed image; converting the first superimposed image into a moire image; and performing a moire quantitative evaluation according to the moire image.Type: GrantFiled: April 6, 2020Date of Patent: March 22, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Qian Jia, Jaegeon You, Xinxing Wang, Yingtao Wang, Xuefei Sun
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Publication number: 20220042547Abstract: The present disclosure discloses a method for realizing macroscopic super-lubrication by a matching pair of nano metal-coated steel balls and hydrogen-containing carbon films, which is based on the use of nano metal-coated steel balls and diamond-like films with a hydrogen content of 25-30% as the matching pair. Further, a tribochemical reaction occurs through the catalytic action of nano metal during the friction process to form a nano graphene transfer film with incommensurate contact at the contact interface to achieve macroscopic super-lubrication.Type: ApplicationFiled: June 24, 2021Publication date: February 10, 2022Inventors: Junyan ZHANG, Qian JIA, Bin ZHANG, Xingkai ZHANG, Yuanlie YU
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Publication number: 20220042167Abstract: A method for preparing an ammonium thiomolybdate-porous amorphous carbon composite superlubricity film is disclosed. First, a porous amorphous carbon film is prepared by an anode layer ion source assisted plasma chemical vapor deposition method and a reactive magnetron sputtering method on a substrate. The porous amorphous carbon film is then impregnated in an ammonium thiomolybdate solution, so that the ammonium thiomolybdate is adsorbed on the porous amorphous carbon film, and the impregnated porous amorphous carbon film is air dried.Type: ApplicationFiled: July 14, 2021Publication date: February 10, 2022Inventors: Bin Zhang, Qian Jia, Junyan Zhang, Yuanlie Yu, Kaixiong Gao, Xingkai Zhang
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Publication number: 20210404928Abstract: The present disclosure provides a total-environment full-scale cyclic accelerated loading experimental system, which pertains to a field of accelerated loading experimental systems. The total-environment full-scale cyclic accelerated loading experimental system includes a rack, and a power mechanism, a chain drive pair, a roller set, a guide rail, etc. installed on the rack. The power mechanism is connected to the roller set through the chain drive pair. The roller set is matched with an annular loading surface of the guide rail. In the present disclosure, in addition to an environmental unit being provided on the rack, modifications are made to structures of the guide rail, the roller set and the chain drive pair as well as connections thereof.Type: ApplicationFiled: January 29, 2019Publication date: December 30, 2021Inventors: Jinxiang FENG, Xingyu GUO, Peng ZHANG, Zhiguang GUAN, Jiwei ZHANG, Qingzhen WU, Qian JIA, Fuguang YANG, Jiuhong RUAN, Huijun WANG, Ying HAN
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Patent number: 11182678Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating a pattern program using a genetic algorithm. The genetic algorithm operates on example data strings that represent the data categories to be recognized or extracted through named entity recognition. In the initialization stage, the initial pattern programs are generated based on example data strings that represent the data categories to be recognized or extracted through named entity recognition. Starting from the initial pattern programs, genetic operations are iteratively conducted to generate generations of offspring pattern programs. In each round of the genetic operation, offspring pattern programs are generated through the crossover operation and the mutation operation.Type: GrantFiled: December 17, 2020Date of Patent: November 23, 2021Assignee: ALIPAY (HANGZHOU) INFORMATION TECHNOLOGY CO., LTD.Inventors: Desheng Wang, Qian Jia, Yang Liu, Peng Zhang, Qian Zhang, Peng Zheng
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Publication number: 20210322989Abstract: A constant temperature circular accelerated loading test system includes: a chassis; a motor reducer and a circular loading wheel group in the middle of the chassis, wherein the motor reducer provides power for the circular loading wheel group, and the circular loading wheel group implements a rolling test on a ground during rotation; a thermally insulated assembly on the chassis, the circular loading wheel group is located in a thermally insulated inner cavity of the thermally insulated assembly; a constant temperature unit on the chassis; a control cabinet on the chassis, wherein the control cabinet is connected to and controls the constant temperature unit and the motor reducer, respectively.Type: ApplicationFiled: January 29, 2019Publication date: October 21, 2021Applicant: Shandong Jiaotong UniversityInventors: Peng ZHANG, Jinxiang FENG, Jiuhong RUAN, Zhiguang GUAN, Jiwei ZHANG, Fuguang YANG, Xingyu GUO, Qian JIA, Qingzhen WU, Huijun WANG, Ying HAN