Patents by Inventor Ziyu Wu
Ziyu Wu 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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Publication number: 20240155946Abstract: A thermoelectric array display and a manufacturing method thereof are provided. The thermoelectric array display includes at least a first pixel, where the first pixel includes a bottom electrode, a P-type thermoelectric leg, an N-type thermoelectric leg, and a top electrode; the P-type thermoelectric leg is arranged on the bottom electrode; and the P-type thermoelectric leg is connected in series to the N-type thermoelectric leg by the top electrode. The thermoelectric array display has strong concealment of information transmission, can effectively reduce heat generation of a device, and can implement long-distance signal transmission.Type: ApplicationFiled: November 16, 2022Publication date: May 9, 2024Applicant: WUHAN UNIVERSITYInventors: Ziyu WANG, Xingzhong ZHANG, Yong LIU, Wei WU, Xiaosa LIANG, Rui XIONG
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Patent number: 11958518Abstract: Embodiments of the present application provide a method and a device for controlling train formation tracking, the method comprising: obtaining a current distance between a first train and a second train in a train formation, wherein the first train is adjacent to the second train and located behind the second train; determining a target tracking mode of the first train based on the current distance, wherein the target tracking mode is one of a speed tracking mode, a distance tracking mode and a braking mode; and tracking the second train, by the first train based on the target tracking mode. Tracking efficiency is improved according to the method of the embodiments of the present application.Type: GrantFiled: January 22, 2021Date of Patent: April 16, 2024Assignee: Traffic Control Technology Co., Ltd.Inventors: Chunhai Gao, Chao Liu, Feng Bao, Chunyu Zhang, Ziyu Wu
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Patent number: 11708098Abstract: Embodiments of the present application provide a method and a device for optimizing a target operation speed curve in an ATO of a train. The method includes: calculating a plurality of performance indexes of the train driving in a current section of a line, and constructing an objective function for optimizing the target operation speed curve of the train according to the plurality of performance indexes; determining constraint conditions of the objective function according to speed limit information of the line and running time of the train in the current section; and solving the objective function according to the constraint conditions based on a differential evolution algorithm to obtain the target operation speed curve of the train. The objective function for optimizing the target operation speed curve of the train are constructed using the plurality of performance indexes, which makes the optimization of the train speed curve more accurate.Type: GrantFiled: January 27, 2021Date of Patent: July 25, 2023Assignee: Traffic Control Technology Co., Ltd.Inventors: Ziyu Wu, Lei Zhang, Wei Wang
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Publication number: 20220144324Abstract: Embodiments of the present application provide a method and a device for optimizing a target operation speed curve in an ATO of a train. The method includes: calculating a plurality of performance indexes of the train driving in a current section of a line, and constructing an objective function for optimizing the target operation speed curve of the train according to the plurality of performance indexes; determining constraint conditions of the objective function according to speed limit information of the line and running time of the train in the current section; and solving the objective function according to the constraint conditions based on a differential evolution algorithm to obtain the target operation speed curve of the train. The objective function for optimizing the target operation speed curve of the train are constructed using the plurality of performance indexes, which makes the optimization of the train speed curve more accurate.Type: ApplicationFiled: January 27, 2021Publication date: May 12, 2022Inventors: Ziyu WU, Lei ZHANG, Wei WANG
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Publication number: 20210403063Abstract: Embodiments of the present application provide a method and a device for controlling train formation tracking, the method comprising: obtaining a current distance between a first train and a second train in a train formation, wherein the first train is adjacent to the second train and located behind the second train; determining a target tracking mode of the first train based on the current distance, wherein the target tracking mode is one of a speed tracking mode, a distance tracking mode and a braking mode; and tracking the second train, by the first train based on the target tracking mode. Tracking efficiency is improved according to the method of the embodiments of the present application.Type: ApplicationFiled: January 22, 2021Publication date: December 30, 2021Inventors: Chunhai Gao, Chao Liu, Feng Bao, Chunyu Zhang, Ziyu Wu
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Patent number: 8972191Abstract: Phase sensitive X-ray imaging methods provide substantially increased contrast over conventional absorption based imaging, and therefore new and otherwise inaccessible information. The use of gratings as optical elements in hard X-ray phase imaging overcomes some of the problems impairing the wider use of phase contrast in X-ray radiography and tomography. To separate the phase information from other contributions detected with a grating interferometer, a phase-stepping approach has been considered, which implies the acquisition of multiple radiographic projections. Here, an innovative, highly sensitive X-ray tomographic phase contrast imaging approach is presented based on grating interferometry, which extracts the phase contrast signal without the need of phase stepping. Compared to the existing phase step approach, the main advantage of this new method dubbed “reverse projection” is the significantly reduced delivered dose, without degradation of the image quality.Type: GrantFiled: February 3, 2010Date of Patent: March 3, 2015Assignees: Paul Scherrer Institut, Institut of High Energy Physics, Chinese Academy of SciencesInventors: Marco Stampanoni, Ziyu Wu, Peiping Zhu
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Publication number: 20120041679Abstract: Phase sensitive X-ray imaging methods provide substantially increased contrast over conventional absorption based imaging, and therefore new and otherwise inaccessible information. The use of gratings as optical elements in hard X-ray phase imaging overcomes some of the problems impairing the wider use of phase contrast in X-ray radiography and tomography. To separate the phase information from other contributions detected with a grating interferometer, a phase-stepping approach has been considered, which implies the acquisition of multiple radiographic projections. Here, an innovative, highly sensitive X-ray tomographic phase contrast imaging approach is presented based on grating interferometry, which extracts the phase contrast signal without the need of phase stepping. Compared to the existing phase step approach, the main advantage of this new method dubbed “reverse projection” is the significantly reduced delivered dose, without degradation of the image quality.Type: ApplicationFiled: February 3, 2010Publication date: February 16, 2012Applicant: PAUL SCHERRER INSTITUTInventors: Marco Stampanoni, Ziyu Wu, Peiping Zhu
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Patent number: 7813475Abstract: An x-ray imaging system uses a synchrotron radiation beam to acquire x-ray images and at least one integrated x-ray source. The system has an imaging system including sample stage controlled by linear translation stages, objective x-ray lens, and x-ray sensitive detector system, placed on a fixed optical table and a mechanical translation stage system to switch x-ray sources when synchrotron radiation beam is not available.Type: GrantFiled: March 11, 2009Date of Patent: October 12, 2010Assignee: Xradia, Inc.Inventors: Ziyu Wu, Wenbing Yun, Peiping Zhu, Yuxin Wang, Qingxi Yuan, Andrei Tkachuk, Wanxia Huang, Michael Feser
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Patent number: 7796725Abstract: An x-ray imaging system uses a synchrotron radiation beam to acquire x-ray images and at least one integrated x-ray source. The system has an imaging system including sample stage controlled by linear translation stages, objective x-ray lens, and x-ray sensitive detector system, placed on a fixed optical table and a mechanical translation stage system to switch x-ray sources when synchrotron radiation beam is not available.Type: GrantFiled: March 11, 2009Date of Patent: September 14, 2010Assignee: Xradia, Inc.Inventors: Ziyu Wu, Wenbing Yun, Peiping Zhu, Yuxin Wang, Qingxi Yuan, Andrei Tkachuk, Wanxia Huang, Michael Feser