Patents Assigned to Tianjin University
  • Publication number: 20150309092
    Abstract: A harmonic-characteristics based current pattern matching method for the non-intrusive power load monitoring and disaggregation is provided in this present invention, on the basis of establishing the load signature database, which comprises electrical appliance registration and load state word space initialization, data acquisition and data preprocessing, feasible state word space search based on table looking-up, the optimal matching of current pattern, and display and output of the monitoring and disaggregation results. The method improves the accuracy of disaggregation, and can achieves exact identification of operating states of appliances, and also can reduce the cost.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 29, 2015
    Applicant: Tianjin University
    Inventors: Yixin Yu, Bo Liu, Bing Wang
  • Publication number: 20150310366
    Abstract: The present invention relates to a power system and provides a method for considering the network security constraints of in the operation of economic dispatch of power systems, which comprises the power flow constraint of branches, the static voltage stability constraint and the transient stability constraint, and provides an effective way for coordinating contradiction between the economy and security of power system operation.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 29, 2015
    Applicant: Tianjin University
    Inventors: Yixin YU, Chao QIN
  • Patent number: 9144783
    Abstract: A low pressure drop structured packing sheet with diversion windows, which are formed on both crests and troughs. When in the expanded state where the diversion window and packing sheet are flat on the same plane, the diversion window has an opening and a fan-shaped portion, with the area of the opening being 0%-1000% of that of the fan-shaped portion. Two side intersection lines between the fan-shaped portion and packing sheet is symmetrical with respect to a central folding line which divides the fan-shaped portion into a left part and a right part. The two side intersection lines intercept to each other with an angel of about 10°-170°. When in the operating state where the diversion window and packing sheet are partially folded towards opposite directions, the fluid at the trough flows to a crest of the other side of the packing sheet with the help of diversion windows, thus increasing the area of vapor-liquid mass transfer.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: September 29, 2015
    Assignee: TIANJIN UNIVERSITY
    Inventors: Chunjiang Liu, Huidian Ding, Kai Guo, Ting Zhang, Xigang Yuan, Long He
  • Publication number: 20150247485
    Abstract: A method for transporting an offshore turbine in a floating manner is disclosed in which a frame construction is mounted on a deck of a transportation and installation ship; a wind turbine foundation connected to a transition segment is prepared in advance; the transition segment is extended from the frame construction; the wind turbine foundation is temporarily secured with the frame construction; the wind turbine tower, wind turbine head and blades are hoisted in turn and then are assembled to form an entire wind turbine machine; and finally the entire wind turbine machine is conveyed to the installation place. The method for transporting an offshore turbine in a floating manner according to the invention may achieve transporting the entire wind turbine machine in a single step, facilitate easy operation and obtain high success rate.
    Type: Application
    Filed: August 28, 2013
    Publication date: September 3, 2015
    Applicant: Tianjin University
    Inventors: Jijian Lian, Hongyan Ding, Puyang Zhang, Aidong Li
  • Publication number: 20150236741
    Abstract: The invention discloses a radio frequency front-end based on the high-intermediate frequency superheterodyne and zero intermediate frequency structure, which includes a transmitting module and a receiving module, wherein, the receiving module includes the following devices connected in turn with each other: a transceiving antenna, a low-pass filter, a superheterodyne unit, an IF band-pass filter, a zero-IF unit, a analog-to-digital converter and a digital baseband module of which the output is communicated with the transmitting module. The zero-IF unit includes the following devices which are also connected in turn with each other: a zero-IF mixer, an active low-pass filter and a variable gain operational amplifier of which the output is communicated with the input of the ADC; the inputs of the zero-IF mixer are communicated with the output of the IF band-pass filter and the second LO respectively.
    Type: Application
    Filed: September 12, 2012
    Publication date: August 20, 2015
    Applicant: Tianjin University
    Inventor: Yingjin YUAN
  • Patent number: 9074957
    Abstract: The present invention relates to a high stable fiber fabry-perot pressure sensor with glue-free packing and its fabrication method. The sensor includes a sensor head, a sensor body with a through-hole in the axial direction and a optical fiber. The sensor head is a 4-layer structure, which includes the first silicon wafer, the first Pyrex glass wafer, the second silicon wafer and the second Pyrex glass wafer. The rear surface of the first silicon wafer forms the first reflecting surface of the fabry-perot (F-P) cavity, and the second silicon wafer provides the second reflecting surface for the F-P cavity. The second Pyrex glass wafer is welded together with the sensor body. The optical fiber is fixed in the sensor body by a CO2 laser welding to achieve the glue-free packing. When the external pressure is applied to deform the first layer silicon wafer, the F-P cavity length will change.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: July 7, 2015
    Assignee: Tianjin University
    Inventors: Junfeng Jiang, Tiegen Liu, Jinde Yin, Kun Liu, Yu Liu
  • Patent number: 9029285
    Abstract: A catalyst including: a support, the support including a mixture of SiO2 and ZrO2; an active ingredient including copper; a first additive including a metal, an oxide thereof, or a combination thereof; and a second additive including Li, Na, K, or a combination thereof. The metal is Mg, Ca, Ba, Mn, Fe, Co, Zn, Mo, La, or Ce. Based on the total weight of the catalyst, the weight percentages of the different components are as follows: SiO2=50-90 wt. %; ZrO2=0.1-10 wt. %; copper=10-50 wt. %; the first additive=0.1-10 wt. %; and the second additive=0.1-5 wt. %.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 12, 2015
    Assignee: Tianjin University
    Inventors: Xinbin Ma, Jing Lv, Yujun Zhao, Shengping Wang, Jinlong Gong, Baowei Wang, Zhenhua Li, Yan Xu
  • Publication number: 20150122376
    Abstract: The present invention published a large walled field conditions P92 long pipeline local heat treatment processes. Firstly, according to the specific conditions for the on-site grade heat-resistant steel (P92 pipe), combining of the finite element method and test, the Heated Band (HB) width and Gradient Control Band (GCB) was calculated. The pipe was then locally heated using the flexible ceramic resistive heater. When the temperature reaches 80-100° C., the pipe was heated to constant temperature at 80-100° C. for 2 h. The pipe was heated to 300° C. at the rate of 150° C./h. When the temperature reaches 300° C., rising the temperature to 765° C. at the rate of 80° C./h. Holding time is calculated by the wall thickness (5 min/mm, no less than 4 h). Lowering the temperature to 300° C. at the rate of 100° C./h and then natural cooling to room temperature, finally removing the heating device. Finally, the local heat treatment process can be obtained.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 7, 2015
    Applicant: Tianjin University
    Inventor: Yingjin YUAN
  • Patent number: 8976278
    Abstract: The present invention relates to the field of design of analog digital hybrid integrated circuit. The object of the invention is to reduce ADC conversion rate thus further reducing power consumption of the sensor while not reducing line frequency of the CMOS-TDI. To this end, a digital domain accumulative CMOS-TDI image sensor with low power consumption is provided. It includes a pixel array of n+k lines multiplied m columns, a column parallel signal pre-processing circuit, a column parallel successive approximation (SAR) ADC, a column parallel digital domain accumulator, a column parallel divider, a timing control circuit and an output shift register, wherein n+k+1 coarse quantification memory units are provided to the column parallel digital domain accumulator for storage of coarse quantification results; and memory units for storage of n times of fine quantification results are also provided, thus realizing n stages of TDI signal accumulation after accumulation of n times of fine quantification results.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 10, 2015
    Assignee: Tianjin University
    Inventors: Suying Yao, Kaiming Nie, Jiangtao Xu, Jing Gao, Zaifeng Shi, Cen Gao
  • Patent number: 8958075
    Abstract: Swing-style demodulation device for measuring displacement information, including (1) a broadband light source, (2) an optical circulator, (3) GRIN lens, (4) a fixed mirror on an object under test, (5) a collimating device, (6) a rotating mirror, (7) f-? lens, (8) a polarizer, (9) a narrow strip shaped birefringent wedge, (10) a polarization analyzer, and (11) a signal acquisition system.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: February 17, 2015
    Assignee: Tianjin University
    Inventors: Tiegen Liu, Junfeng Jiang, Jinde Yin, Kun Liu, Shaohua Wang
  • Patent number: 8934100
    Abstract: Disclosed is a multi-band multiplexing intra-cavity gas sensing system and method. The system consists of a laser resonant cavity subsystem, a gas sensing subsystem and a detection-demodulation subsystem. The laser resonant cavity subsystem consists of the first beam splitter, two ways of gain paths composed of a pump light source, a wavelength division multiplexer, a rare earth doped fiber, an optical isolator and a tunable optical attenuator, a beam combiner and an F-P tunable optical filter. The gas sensing subsystem consists of a gas cell and an optical reflective mirror. The detection-demodulation subsystem consists of an optical coupler, the second beam splitter, two optical detectors, a data acquisition module and a computer. In this invention, different rare-earth doped fibers are multiplexing into one system, in order to cover more maser bands of different rare earth, which greatly expands the scanning range of wavelength, and is capable of detecting various gases simultaneously.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 13, 2015
    Assignee: Tianjin University
    Inventors: Kun Liu, Tiegen Liu, Junfeng Jiang, Xiao Liang
  • Publication number: 20140366729
    Abstract: The present invention discloses a method and a device for recovering ethylene during the process for producing vinyl acetate, wherein a double solvent absorption method composed of an absorbent solution and deionized water is adopted.
    Type: Application
    Filed: November 6, 2012
    Publication date: December 18, 2014
    Applicant: Tianjin University
    Inventor: Yingjin YUAN
  • Publication number: 20140368703
    Abstract: The present invention relates to the field of design of analog digital hybrid integrated circuit. The object of the invention is to reduce ADC conversion rate thus further reducing power consumption of the sensor while not reducing line frequency of the CMOS-TDI. To this end, a digital domain accumulative CMOS-TDI image sensor with low power consumption is provided. It includes a pixel array of n+k lines multiplied m columns, a column parallel signal pre-processing circuit, a column parallel successive approximation (SAR) ADC, a column parallel digital domain accumulator, a column parallel divider, a timing control circuit and an output shift register, wherein n+k+1 coarse quantification memory units are provided to the column parallel digital domain accumulator for storage of coarse quantification results; and memory units for storage of n times of fine quantification results are also provided, thus realizing n stages of TDI signal accumulation after accumulation of n times of fine quantification results.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 18, 2014
    Applicant: TIANJIN UNIVERSITY
    Inventors: Suying Yao, Kaiming Nie, Jiangtao Xu, Jing Gao, Zaifeng Shi, Cen Gao
  • Patent number: 8897910
    Abstract: The invention relates to a new technology which uses a surface modification method for ultra-precision machining, and in particular relates to a particle beam-assisted ultraprecision machining method for single-crystal brittle materials. The invention, the particle beam-assisted ultra-precision machining method for single-crystal brittle materials, can significantly improve machining accuracy, reduce surface finish and greatly reduce tool wear during ultra-precision machining of brittle materials.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 25, 2014
    Assignee: Tianjin University
    Inventors: Fengzhou Fang, Yunhui Chen, Zongwei Xu, Zhongjun Qiu, Xiaodong Zhang, Tengfei Dai, Xiaotang Hu
  • Publication number: 20140303398
    Abstract: The present invention discloses a method for producing vinyl acetate. Inert gas is introduced into cycling gas to improve the explosion limit of oxygen, enlarge a stable area of a reaction system and improve the oxygen concentration of the reaction system, thus reducing the reaction temperature, prolonging the service life of a catalyst, and improving the selectivity of the vinyl acetate. The inert gas is nitrogen or a mixture of nitrogen and methane. The concentration of the inert gas at the inlet of a reactor is 8 to 30 mol %. The molar concentration of the oxygen at the inlet of the reactor is 10.5 to 12 mol %.
    Type: Application
    Filed: November 6, 2012
    Publication date: October 9, 2014
    Applicants: Tianjin University
    Inventors: Minhua Zhang, Xiuqin Dong, Minli Tao, Cheng Liu, Shengli Ouyang, Haoxi Jiang, Jing Ma, Guiming Li
  • Patent number: 8839690
    Abstract: A parallel mechanism with three-dimensional translation and one-dimensional rotation include a fixing rack, a mobile platform and four chains of the same structure which are symmetrically set between the fixing rack and the mobile platform. Each chain has a near rack rod and two parallel far rack rods. The mobile platform includes a main platform and an assistant platform connected by a revolute joint and perpendicular to each other. Each end of the main platform and the assistant platform is connected with a corresponding lower connecting shaft separately.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: September 23, 2014
    Assignee: Tianjin University
    Inventors: Tian Huang, Haitao Liu, Yimin Song, Xueman Zhao, Jiangping Mei, Limin Zhang, Panfeng Wang
  • Patent number: 8829167
    Abstract: Foliamngiferosides having the general formula (I) are disclosed, wherein R is H or —OCH. The preparation method of the compounds, pharmaceutical compositions comprising the compounds as the active ingredients, the use of the compounds and the pharmaceutical compositions for inhibiting the activity of ?-glucosidase are also disclosed. The foliamangiferosides can be used in preparing drugs for treating diabetes.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 9, 2014
    Assignee: Tianjin University of Traditional Chinese Medicine
    Inventors: Tao Wang, Yi Zhang, Erwei Liu, Lifeng Han, Dandan Ge, Xiumei Gao
  • Patent number: 8765092
    Abstract: A non-stoichiometric perovskite oxide having the general chemical formula LaXMnOY, in which the molar ratio of lanthanum to manganese (“X”) ranges from 0.85 to 0.95, can be used in particle form as an oxidation catalyst to oxidize NO to NO2 in an exhaust aftertreatment system for a hydrocarbon-fueled engine. The oxygen content (“Y”) fluctuates with variations in the molar ratio of lanthanum to manganese but generally falls somewhere in the range of 3.0 to 3.30. The crystal lattice adjustments spurred by the non-stoichiometric molar ratio of lanthanum to manganese are believed responsible for an enhanced NO oxidative activity relative to similar perovskite oxides with a higher molar ratio of lanthanum and manganese.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 1, 2014
    Assignees: GM Global Technology Operations LLC, Tianjin University
    Inventors: Gongshin Qi, Wei Li, Xinquan Wang, Meiqing Shen
  • Patent number: 8624005
    Abstract: A method for protein refolding with an ion exchange resin. The method includes (a) choosing an ion exchange resin that having charged groups with the same sign as a net charge of a denatured protein to be refolded; (b) removing heterogeneous ions from the ion exchange resin by washing the ion exchange resin sequentially with saline solution and deionized water, to prepare the ion exchange resin; (c) mixing the ion exchange resin with a refolding buffer thoroughly, then adding the denatured protein to the refolding buffer and allowing the denatured protein to refold; and then (d) collecting the supernatant by centrifugation or settlement, to obtain a solution containing the refolded protein.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 7, 2014
    Assignee: Tianjin University
    Inventors: Yan Sun, Guozhen Wang, Qinghong Shi, Xiaoyan Dong
  • Publication number: 20130288989
    Abstract: Use of chemical ingredients in Cynomorium as phytoestrogen is provided by the present invention. Particularly, use of Cynomorium, extracts of Cynomorium, or at least one ingredient chosen from chrysophanol, emodin, catechin, (?)-epicatechin-3-O-gallate, naringenin-4?-O-glucopyranoside, and phlorizin, in manufacturing medicaments for treating and/or preventing diseases related to insufficient of estrogen secretion in mammal (for example, human), or use in manufacturing medicaments used as phytoestrogens is provided by the present invention. The extracts of Cynomorium, compositions containing extracts of Cynomorium or active ingredients thereof, and methods of treating and/or preventing diseases related to insufficient of estrogen secretion are also provided by the present invention.
    Type: Application
    Filed: October 14, 2010
    Publication date: October 31, 2013
    Applicant: TIANJIN UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
    Inventor: Xiumei Gao