Patents by Inventor Tiejun Zhao
Tiejun Zhao 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: 11946923Abstract: A device and method for monitoring freezing-thawing damage of an underwater concrete member in situ. A main structure includes an upper link, concrete member, transverse sealed box, longitudinal sealed box, movable guide rod, probe launching box, multichannel data collector, frequency modulation transmitter, computer, auxiliary wheels, lower link, and a wireless temperature sensor. A process includes four steps: launching of a probe, collection of data, calculation of an elastic modulus, and evaluation of freezing-thawing damage.Type: GrantFiled: February 4, 2021Date of Patent: April 2, 2024Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Jiuwen Bao, Zihao Yu, Peng Zhang, Shuguo Li, Tiejun Zhao
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Patent number: 11703474Abstract: The present application belongs to the technical field of monitoring of durability of concrete, and particularly relates to a method for optimizing a structure of an electrical capacitance tomography sensor and analyzing an electromagnetic field. A specific process of the method includes eight steps: parameter setting, geometric setting, material setting, mesh generation, physical field setting, solution, sensor structure optimization and calculation of electromagnetic field distribution. The method proposes a new concept for solving a forward problem of an ECT system based on COMSOL software. After modeling is completed, uniformity of a sensitive field of the ECT sensor is analyzed according to calculation results, and structural parameter values of components of the ECT sensor are adjusted to seek an optimal design scheme.Type: GrantFiled: November 26, 2020Date of Patent: July 18, 2023Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Peng Zhang, Wentao Wang, Kaiyue Zhao, Jiuwen Bao, Tiejun Zhao
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Patent number: 11680884Abstract: An apparatus and a method for testing water absorption of concrete in a direction parallel with load applying direction are provided. The apparatus includes a loading device, a water filling device, and a monitoring device. The loading device includes an upper support plate and a lower support plate connected with the upper support plate via multiple threaded rods, and a space for placing a concrete specimen formed between the upper support plate and the lower support plate. The water filling device includes a water filling cylinder having a side connected with a water supply tank via an inlet pipe, and another side connected with a water storage tank via an outlet pipe. The monitoring device includes a mass sensor arranged under the water storage tank and a strain gauge for detecting change of stress of the concrete specimen.Type: GrantFiled: February 14, 2020Date of Patent: June 20, 2023Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Peng Zhang, Jiuwen Bao, Shuguo Li, Tiejun Zhao
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Publication number: 20220341866Abstract: The present application belongs to the technical field of monitoring of durability of concrete, and particularly relates to a method for optimizing a structure of an electrical capacitance tomography sensor and analyzing an electromagnetic field. A specific process of the method includes eight steps: parameter setting, geometric setting, material setting, mesh generation, physical field setting, solution, sensor structure optimization and calculation of electromagnetic field distribution. The method proposes a new concept for solving a forward problem of an ECT system based on COMSOL software. After modeling is completed, uniformity of a sensitive field of the ECT sensor is analyzed according to calculation results, and structural parameter values of components of the ECT sensor are adjusted to seek an optimal design scheme.Type: ApplicationFiled: November 26, 2020Publication date: October 27, 2022Inventors: Peng ZHANG, Wentao WANG, Kaiyue ZHAO, Jiuwen BAO, Tiejun ZHAO
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Publication number: 20220308038Abstract: A device and method for monitoring freezing-thawing damage of an underwater concrete member in situ. A main structure includes an upper link, concrete member, transverse sealed box, longitudinal sealed box, movable guide rod, probe launching box, multichannel data collector, frequency modulation transmitter, computer, auxiliary wheels, lower link, and a wireless temperature sensor. A process includes four steps: launching of a probe, collection of data, calculation of an elastic modulus, and evaluation of freezing-thawing damage.Type: ApplicationFiled: February 4, 2021Publication date: September 29, 2022Applicant: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Jiuwen BAO, Zihao YU, Peng ZHANG, Shuguo LI, Tiejun ZHAO
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Patent number: 11408816Abstract: The disclosure relates to a device and method for a dry-wet cycle simulation test of concrete in a tidal zone and a splash zone. A main structure includes a liquid storage tank, a test chamber, a communicating pipe, air holes of the liquid storage tank, air holes of the test chamber, ceiling fans, steel pipes, a support frame, an upper water level sensor, a lower water level sensor, a temperature and humidity sensor, a temperature sensor, a chamber body support, a communication valve, a pipe support, a water inlet pump, a water inlet valve, a water outlet pipe, a water outlet pump, a water outlet valve, spray water pipes, spray heads, and a control box. The control box can control and record test parameters in real time, so that the boundary between the tidal zone and the splash zone is clear.Type: GrantFiled: February 14, 2020Date of Patent: August 9, 2022Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Peng Zhang, Jiuwen Bao, Jianan Wei, Zhijie Zhuang, Tiejun Zhao
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Patent number: 11268946Abstract: A life-cycle performance intelligent-sensing and degradation warning system and method for concrete structures are disclosed. The warning system comprises a main control module, a multifunctional sensor module, an anti-theft module and a critical warning module. Environmental parameters in concrete are monitored by the multifunctional sensor module, and the remaining service life of a concrete structure is accurately predicted through a life prediction model according to the temperature, humidity, chloride ion concentration and pH at different depths, and a critical chloride ion concentration and a structure stress status that are dynamically obtained.Type: GrantFiled: June 11, 2020Date of Patent: March 8, 2022Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Penggang Wang, Zuquan Jin, Tiejun Zhao, Dongshuai Hou, Li Tian, Peng Zhang, Xiaomei Wan, Siyao Guo, Yupeng Tian
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Publication number: 20210372900Abstract: An apparatus and a method for testing water absorption of concrete in a direction parallel with load applying direction are provided. The apparatus includes a loading device, a water filling device, and a monitoring device. The loading device includes an upper support plate and a lower support plate connected with the upper support plate via multiple threaded rods, and a space for placing a concrete specimen formed between the upper support plate and the lower support plate. The water filling device includes a water filling cylinder having a side connected with a water supply tank via an inlet pipe, and another side connected with a water storage tank via an outlet pipe. The monitoring device includes a mass sensor arranged under the water storage tank and a strain gauge for detecting change of stress of the concrete specimen.Type: ApplicationFiled: February 14, 2020Publication date: December 2, 2021Inventors: Peng ZHANG, Jiuwen BAO, Shuguo LI, Tiejun ZHAO
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Publication number: 20210356451Abstract: A life-cycle performance intelligent-sensing and degradation warning system and method for concrete structures are disclosed. The warning system comprises a main control module, a multifunctional sensor module, an anti-theft module and a critical warning module. Environmental parameters in concrete are monitored by the multifunctional sensor module, and the remaining service life of a concrete structure is accurately predicted through a life prediction model according to the temperature, humidity, chloride ion concentration and pH at different depths, and a critical chloride ion concentration and a structure stress status that are dynamically obtained.Type: ApplicationFiled: June 11, 2020Publication date: November 18, 2021Applicant: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Penggang WANG, Zuquan JIN, Tiejun ZHAO, Dongshuai HOU, Li TIAN, Peng ZHANG, Xiaomei WAN, Siyao GUO, Yupeng TIAN
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Patent number: 11170545Abstract: A method for real-time assessment of image information employing a computer that includes one or more processors includes obtaining, via a scanner, a magnetic resonance (MR) image of a region-of-interest, and providing data corresponding to at least a portion of the MR image to a deep learning model, where the deep learning model is previously trained based on one or more sets of training data. The method further includes assessing the data using the deep learning model and data obtained from an image quality database to obtain an assessed image quality value, and formulating an image quality classification in response to the assessed image quality value. The method additionally includes outputting the image quality classification within a predetermined time period from an initial scan of the region-of-interest.Type: GrantFiled: January 23, 2019Date of Patent: November 9, 2021Assignees: New York University, Siemens Medical Solutions USA, Inc.Inventors: Hersh Chandarana, Tiejun Zhao, Xiaoguang Lu
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Publication number: 20210190672Abstract: The disclosure relates to a device and method for a dry-wet cycle simulation test of concrete in a tidal zone and a splash zone. A main structure includes a liquid storage tank, a test chamber, a communicating pipe, air holes of the liquid storage tank, air holes of the test chamber, ceiling fans, steel pipes, a support frame, an upper water level sensor, a lower water level sensor, a temperature and humidity sensor, a temperature sensor, a chamber body support, a communication valve, a pipe support, a water inlet pump, a water inlet valve, a water outlet pipe, a water outlet pump, a water outlet valve, spray water pipes, spray heads, and a control box. The control box can control and record test parameters in real time, so that the boundary between the tidal zone and the splash zone is clear.Type: ApplicationFiled: February 14, 2020Publication date: June 24, 2021Inventors: Peng ZHANG, Jiuwen BAO, Jianan WEI, Zhijie ZHUANG, Tiejun ZHAO
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Patent number: 10962582Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.Type: GrantFiled: July 17, 2017Date of Patent: March 30, 2021Assignees: BEIJING GUODIAN TONG NETWORK TECHNOLOGY CO., LTD, STATE GRID JIBEI ELECTRIC POWER CO., LTD, STATE GRID QINHUANGDAO POWER SUPPLY COMPANYInventors: Xinling Wu, Shen Liu, Tiejun Zhao, Yue Yu, Weiyue Zhou, Chuanbo Tian, Ke Qiao, Xiaoling Zhu, Yaxin Liu, Dong Liang, Aimei Yan, Shuhan Zhang, Lili Zhang, Yi Yuan, Xuemei Wu, Jian Zhu, Lingchen Sun, Sining Wang, Man Leng
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Patent number: 10670677Abstract: A method of performing multi-slice acceleration for MR fingerprinting includes obtaining k-space data for MR volumes; applying controlled radio frequency (RF) pulses to the MR volumes; exciting a plurality of slices within the MR volumes by the RF pulses at a same time; and producing a plurality of fingerprints from the plurality of slices. At least one set of fingerprints is compressed, and a residual signal of a plurality of signal evolutions is reduced. The method additionally includes periodically switching a weighting between a first slice and a second slice of the plurality of slices.Type: GrantFiled: April 21, 2017Date of Patent: June 2, 2020Assignees: NEW YORK UNIVERSITY, SIEMENS MEDICAL SOLUTIONS USA, INC.Inventors: Martijn Anton Hendrik Cloos, Tiejun Zhao
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Publication number: 20190361066Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.Type: ApplicationFiled: July 17, 2017Publication date: November 28, 2019Applicants: BEIJING GUODIAN TONG NETWORK TECHNOLOGY CO., LTD, STATE GRID JIBEI ELECTRIC POWER CO., LTD, STATE GRID QINHUANGDAO POWER SUPPLY COMPANYInventors: Xinling WU, Shen LIU, Tiejun ZHAO, Yue YU, Weiyue ZHOU, Chuanbo TIAN, Ke QIAO, Xiaoling ZHU, Yaxin LIU, Dong LIANG, Aimei YAN, Shuhan ZHANG, Lili ZHANG, Yi YUAN, Xuemei WU, Jian ZHU, Lingchen SUN, Sining WANG, Man LENG
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Publication number: 20190228547Abstract: A method for real-time assessment of image information employing a computer that includes one or more processors includes obtaining, via a scanner, a magnetic resonance (MR) image of a region-of-interest, and providing data corresponding to at least a portion of the MR image to a deep learning model, where the deep learning model is previously trained based on one or more sets of training data. The method further includes assessing the data using the deep learning model and data obtained from an image quality database to obtain an assessed image quality value, and formulating an image quality classification in response to the assessed image quality value. The method additionally includes outputting the image quality classification within a predetermined time period from an initial scan of the region-of-interest.Type: ApplicationFiled: January 23, 2019Publication date: July 25, 2019Inventors: Hersh CHANDARANA, Tiejun ZHAO, Xiaoguang LU
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Patent number: 10126402Abstract: Example apparatus and methods provide improved quantitative T2 mapping for magnetic resonance imaging (MRI). Conventional T2 (spin-spin) mapping in MRI may employ a spin echo with multiple echoes (SEMC) approach like the Carr-Purcell-Meiboom-Gill (CPMG) spin echo sequence. These conventional approaches may be negatively impacted by a slice profile effect that incorrectly and undesirably lowers the signal of a first echo and by a stimulated echo effect that incorrectly and undesirably raises the signal for even echoes. Example apparatus mitigate these issues by using a T2 preparation phase that uses three dimensional (3D) non-slice selective block RF pulses followed by a multi-echo data acquisition that uses an in-out k-space trajectory. The multi-echo acquisition may employ k-space segmentation to acquire one line of partition encodings per T2 preparation phase.Type: GrantFiled: June 2, 2015Date of Patent: November 13, 2018Assignee: Case Western Reserve UniversityInventors: Tiejun Zhao, Kecheng Liu, Dan Ma, Mark Griswold
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Patent number: 9971009Abstract: Example apparatus and methods provide improved resolution over conventional magnetic resonance imaging (MRI) that is affected by the presence of metal (e.g., prosthetic hip) in the MRI field of view (FOV). Embodiments may excite a slice that is affected by a susceptibility effect produced by metal. Embodiments may excite the slice using a first pre-determined frequency and a plurality of scout frequency encodings. Embodiments may acquire nuclear magnetic resonance (NMR) signal data from the slice in response to the first pre-determined frequency and the plurality of scout frequency encodings and select frequency encodings to use to image the slice as a function of an amplitude of the NMR signal data. Frequency encodings are selected to produce data that will help account for distortions caused by the susceptibility effect.Type: GrantFiled: April 21, 2014Date of Patent: May 15, 2018Assignee: CASE WESTERN RESERVE UNIVERSITYInventors: Mark Griswold, Kechung Liu, Dan Ma, Tiejun Zhao
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Publication number: 20170307706Abstract: A method of performing multi-slice acceleration for MR fingerprinting includes obtaining k-space data for MR volumes; applying controlled radio frequency (RF) pulses to the MR volumes; exciting a plurality of slices within the MR volumes by the RF pulses at a same time; and producing a plurality of fingerprints from the plurality of slices. At least one set of fingerprints is compressed, and a residual signal of a plurality of signal evolutions is reduced. The method additionally includes periodically switching a weighting between a first slice and a second slice of the plurality of slices.Type: ApplicationFiled: April 21, 2017Publication date: October 26, 2017Inventors: Martijn Anton Hendrik CLOOS, Tiejun ZHAO
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Patent number: 9759795Abstract: A system acquires MR image data of a portion of patient anatomy associated with spin lattice relaxation time in a rotating frame using an RF (Radio Frequency) signal generator and a magnetic field gradient generator. The RF (Radio Frequency) signal generator generates RF excitation pulses in anatomy and enables subsequent acquisition of associated RF echo data. The magnetic field gradient generator generates anatomical volume select magnetic field gradients for phase encoding and readout RF data acquisition in a three dimensional (3D) anatomical volume. The RF signal generator and the gradient generator use in order, a saturation pulse, a T1 spin lattice relaxation rotating frame preparation pulse sequence and a spoiler gradient, in acquiring image data of the 3D volume showing luminance contrast associated with T1 spin lattice relaxation in a rotating frame.Type: GrantFiled: April 25, 2013Date of Patent: September 12, 2017Assignee: Siemens Healthcare GmbHInventors: Kecheng Liu, Tiejun Zhao
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Patent number: 9568573Abstract: A method for automated magnetic field shimming in a MR imaging system includes generating RF excitation pulses in anatomy, generating slice select magnetic field gradients on a static magnetic field and generating a plurality of shimming routines. The method also includes acquiring maps of the static magnetic field between each shimming routine and determining a base function for each of the plurality of shimming coils from: (i) intermediate magnitudes and directions of the static magnetic field produced by each of the plurality of shimming coils during each shimming routine; and (ii) intermediate currents supplied to each of the plurality of shimming coils during each shimming routine. The method further includes determining updated magnitudes and directions of the static magnetic field produced by each of the plurality of shimming coils by expanding the determined base function for each of the plurality of shimming coils into low order polynomials.Type: GrantFiled: March 17, 2014Date of Patent: February 14, 2017Assignee: Siemens Healthcare GmbHInventor: Tiejun Zhao