公开(公告)号：US20190048554A1

公开(公告)日：2019-02-14

申请号：US15566629

申请日：2017-02-22

Applicant: Beijing University of Technology

Inventor： Xiuli Du ,  Hongtao Liu ,  Chengshun Xu ,  Zili Wang

IPC: E02D29/00 ,  E04H9/02 ,  E02D29/045 ,  E04B1/98

CPC classification number: E02D29/04 ,  E02D29/045 ,  E04B1/98 ,  E04H9/021 ,  E04H9/027

Abstract: The present disclosure discloses a self-reset flexible earthquake-resistant system of the prefabricated subway station, comprising prefabricated component prestressed tendon, waterproof rubber, and rubber bearing. The main structure of station is built by connection between prestressed tendon and prefabricated component, it changes the connection methods of connection node from consolidation joint to hinged joint which makes the subway station into a flexible system, while at the same time, self-reset function is realized by prestressed tendon; “T” and “” system is combined with rubber waterproof tape, and rubber bearing which is installed in connection site of prefabricated component, multi-protection measures of waterproof is realized, earthquake-resistant effect is also realized. Connection problem with the prefabricated component can be solved by the self-reset flexible earthquake-resistant system of the prefabricated subway station; underground station structure is changed into the flexible system through releasing bending moment in connection site of the prefabricated component, deforming ability of subway station is improved, the earthquake-resistant ability of underground subway station is improved.

公开(公告)号：US10175662B2

公开(公告)日：2019-01-08

申请号：US15783908

申请日：2017-10-13

Applicant: Beijing University of Technology

Inventor： Naigong Yu ,  Yunhe Yuan ,  Xiaojun Jiang ,  Ti Li ,  Lue Fang ,  Ziwei Luo

IPC: B25J9/16 ,  G05B13/04 ,  G06N3/04 ,  G05D1/02 ,  G05B13/02

Abstract: A robot constructs a navigation map based on the cognitive mechanism of rat hippocampus. The robot collects current self-motion cues and color depth map information through exploring the environment; self-motion cues form spatial environment codes gradually through path integral and feature extraction of spatial cells in hippocampus, place field of place cells is gradually formed during exploring the process and covers the whole environment to form a cognitive map. Further, Kinect collects scene view and color depth map information of the current position in right ahead direction as an absolute reference, proceeding path closed-loop detection to correct the errors of the path integral. At a close-loop point, the system proceeds reset of spatial cells discharging activity to correct the errors of the path integral. The final point in navigation map includes coding information of place cells series, corresponding visual cues and position topological relationship.

公开(公告)号：US20180254164A1

公开(公告)日：2018-09-06

申请号：US15757343

申请日：2016-12-30

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： JINSHU WANG ,  LIRAN DONG ,  JIE ZHANG ,  MINGCHUANG TIAN ,  JINGCHAO LIU ,  XIAOYANG CHEN ,  XIAO HAN ,  LIYANG XIAO

IPC: H01J23/05 ,  B22F3/24 ,  C23C8/20 ,  H01J9/04

CPC classification number: H01J23/05 ,  B22F3/24 ,  B22F5/12 ,  B22F2003/241 ,  B22F2301/20 ,  B22F2302/25 ,  B22F2998/10 ,  B22F2999/00 ,  C22C32/0031 ,  C23C8/20 ,  C23C8/80 ,  H01J9/04 ,  H01J9/042 ,  H01J23/04 ,  H05B6/66 ,  H05B2206/04 ,  Y10T29/49002 ,  B22F3/02 ,  B22F3/10 ,  B22F3/17 ,  B22F2201/30

Abstract: A carburized La2O3 and Lu2O3 co-doped Mo filament cathode and its fabrication method, which belongs to the technical field of rare earth-refractory metal cathodes. The rare earth oxides are La2O3 and Lu2O3, and the total concentration of rare earth oxides ranges from 2.0-5.0 wt. %. The La2O3 and Lu2O3 co-doped molybdenum oxide powers are prepared by Sol-Gel method. La2O3 and Lu2O3 co-doped Mo powers are prepared by two calcining steps. Then pressing and sintering the mixed powders to obtain the molybdenum rods; operating mechanical and heat processes of the molybdenum rods to obtain molybdenum filament. Operating electrolytic cleaning, straightening, winding modeling and cutting treatments with Mo filament to obtain the un-carburized La2O3 and Lu2O3 co-doped Mo cathode. And then carburize the filament cathode at a high temperature for a short time to obtain a cathode with high carburization degree. And then operate the out-gassing treatment and activation treatment with the cathode at a high temperature to obtain an environmental and non-radioactive cathode with good emission current and emission stability.

公开(公告)号：US20180192245A1

公开(公告)日：2018-07-05

申请号：US15479317

申请日：2017-04-05

Applicant: Beijing University of Technology

Inventor： Zhiming DING ,  Fujie REN

IPC: H04W4/02 ,  H04W4/00

CPC classification number: H04W4/023 ,  H04L67/12 ,  H04W4/08

Abstract: The present invention discloses an extraction and representation method of state vector of sensing data of Internet of Things, extracting and representing sensing sampling data of state vector through the method. receiving sampling data and performing vector extraction on sampling data, sampling data vector representing as a time function of f(t), adding time tstart, end time tend and unit time of vector activity of unitime, the last vector being current active vector for each component of each active sensing device; performing query of sensing sampling data, and then extracting and representing state vector, storing sensing data information with state vector, reducing update frequency of data storage and improving accuracy of interpolation query information. User inputs query time t for interpolation query, in vector sequence, obtaining vector activity corresponding time t using binary search, taking t into vector function to obtain sampling component value of monitoring object at t moment.

公开(公告)号：US20180053625A1

公开(公告)日：2018-02-22

申请号：US15510627

申请日：2016-11-11

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： XIAODONG HAN ,  ZHIPENG LI ,  SHENGCHENG MAO ,  XIAODONG WANG ,  CHUNQIANG ZHUANG ,  JIANFEI ZHANG ,  QINGSONG DENG ,  YADI ZHAI ,  TAONAN ZHANG ,  ZE ZHANG

IPC: H01J37/20 ,  G01N23/02

CPC classification number: H01J37/20 ,  G01N23/02 ,  G01N2223/307 ,  G01N2223/32 ,  G01N2223/418 ,  H01J37/26 ,  H01J2237/2007 ,  H01J2237/206 ,  H01J2237/262

Abstract: A double-tilt in-situ nanoindentation platform for TEM (transmission electron microscope) belongs to the field of in-situ characterization of the mechanical property-microstructure relationship of materials at the nano- and atomic scale. The platform is consisted of adhesive area, support beams, bearing beams, sample loading stage and mini indenter. The overall structure of the platform is prepared by semiconductor microfabrication technology. The in-situ nanoindentation experiment can be driven by bimetallic strip, V-shaped electro-thermal beam, piezoelectric ceramics, electrostatic comb or shape memory alloys et. al. The sample is obtained by focused ion beam cutting. The integrated platform can be placed in the narrow space on the front end of the TEM sample holder, giving rise to the condition of double-axis tilt. The driving device drives the mini indenter to carry out in-situ nanoindentation, in-situ compression and in-situ bending and the like of the materials in TEM. The deformation process of material can be in-situ observed in sub angstrom, atomic and nano scale to study the deformation mechanism of material, which can further reveal the relationship of microstructure-mechanical properties of the material.

公开(公告)号：US09879211B2

公开(公告)日：2018-01-30

申请号：US15510806

申请日：2015-07-21

Applicant: Beijing University of Technology

Inventor： Hong Yang

IPC: C12M1/107 ,  C12M1/00

CPC classification number: C12M21/04 ,  C12M21/16 ,  C12M23/34 ,  C12M27/18 ,  C12M27/20 ,  C12M29/00 ,  C12M45/06 ,  C12M45/20 ,  Y02E50/343 ,  Y02W10/23

Abstract: A large-type horizontal device and a method for continuous methane fermentation. The whole distribution of a fermentation compartment uses a U-shape plane layout, which is a snap-back type and uses a material propeller. The material propeller has two axes and two blades and is constantly occluded with counter rotation. The irreversible propulsion of materials can be realized through counter rotation of two occluded blades. The propeller is set at the bottom of the main partition of the fermentation compartment. The propel ability of propeller can be changed through changing of rotation speed. Counter rotation of two occluded blades can realize material propeller without material reverting. The inlet and outlet entrances of the reactor in the disclosure are near to the ground and can be operated conveniently. The homogeneous output of materials and entire plug-flow can be realized at the same time without material mixing in the whole process.

公开(公告)号：US20170345608A1

公开(公告)日：2017-11-30

申请号：US15409888

申请日：2017-01-19

Applicant: Beijing University of Technology

Inventor： Wei Liu ,  Mingchaung Tian ,  Jinshu Wang ,  Fan Zhou ,  Yiman Wang ,  Liran Dong ,  Yunfei Yang ,  Quan Zhang

IPC: H01J9/04 ,  B22F9/02 ,  B22F3/105 ,  C22B34/36 ,  B22F9/22 ,  H01J35/06 ,  H01J1/28 ,  H01J19/22

CPC classification number: H01J9/04 ,  B22F3/105 ,  B22F9/026 ,  B22F9/22 ,  B22F9/30 ,  B22F2003/1054 ,  B22F2998/10 ,  C22B34/36 ,  H01J1/28 ,  H01J19/22 ,  H01J35/06 ,  B22F3/02

Abstract: The present disclosure discloses a preparation method of pressed Scandia-doped dispenser cathode using microwave sintering. Embodiments of the present disclosure include dissolving some nitrates and ammonium metatungstate with deionized water to prepare a homogeneous solution. Precursor powder with uniform size is obtained by spray drying, the precursor powder is decomposed, and two-step reduction may be proceeded to form doped tungsten powder with uniform element distribution. The cathode is prepared by one-time microwave sintering. One-time forming of cathode sintering is realized, and sintering shrinkage and sintering time are reduced significantly. The method has excellent repeatability, and the cathode has a homogeneous structure and excellent emission performance at 950° C.

公开(公告)号：US20170313237A1

公开(公告)日：2017-11-02

申请号：US15520562

申请日：2015-10-15

Applicant: Beijing University Of Technology (CN) ,  Guizhou Expressway Group Co., Ltd. (CN)

Inventor： Jiangbi HU ,  Meng WANG ,  Guiping GUAN ,  Mingyu XIE ,  Xiangzhen CHANG ,  Xiaoqin ZHANG ,  Da GUO ,  Wenqian MA ,  Yuanfeng ZHANG ,  Xiaoyu LI ,  Linxi GAO ,  Xiaojuan GAO ,  Feng LIU

IPC: B60Q1/14 ,  H05B37/02 ,  G06K9/00

CPC classification number: B60Q1/143 ,  E21F17/00 ,  F21S2/00 ,  F21W2131/101 ,  G06K9/00825 ,  H05B37/0218

Abstract: This invention relates to an illumination standard calculation method for a tunnel middle section based on safe visual recognition: (a) Setting the light environment of the tunnel middle section; (b) Placing a target object in the tunnel middle section; (c) Making a driver drive a motor vehicle at different speeds toward the target object, and measuring the visual recognition distances D required by the driver to visually discover the target object at different speeds; (d) Resetting the average brightness L of the tunnel middle section and repeating the steps (b) and (c) to obtain a plurality of different sets of visual recognition distances D and corresponding brightness values L; (e) Using the S model to fit the data of the plurality of sets of visual recognition distances D and brightness values L to obtain the formula of the relational model of D and L to be L=0.683/(5.575-In(D)); (f) Substituting a safe stopping sight distance D0 corresponding to a maximum speed limit of the tunnel into the model formula to obtain the dynamic minimum brightness value L0 required for the tunnel middle section under this tunnel light environment. The method improves the accuracy of safety evaluation of the tunnel middle section brightness, and the method is simple and convenient, and provides a reference basis for the road traffic safety research. The invention also provides a system for implementing this method.

公开(公告)号：US20170301510A1

公开(公告)日：2017-10-19

申请号：US15387529

申请日：2016-12-21

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： XIAODONG HAN ,  JIANFEI ZHANG ,  MAO SHENGCHENG ,  YADI ZHAI ,  XIAODONG WANG ,  ZHIPENG LI ,  XIAOCHEN LI ,  TAONAN ZHANG ,  DONGFENG MA ,  ZE ZHANG

IPC: H01J37/20

CPC classification number: H01J37/20 ,  H01J37/26 ,  H01J2237/20207 ,  H01J2237/20278 ,  H01J2237/206 ,  H01J2237/262

Abstract: A double-tilt sample holder for TEM, comprising: it comprise the main body of sample holder body, front-end tilt stage, drive rod, linkage, tilt axis, rotation axis, fixed axis of drive rod and sample loading stage. The axis hole is arranged at the front-end tilt stage, which is connected to the main body of the sample holder body by the tilt axis. The linkage, the boss slot and the drive rod slot are connected by the rotation axis. Two through movement guide grooves are designed symmetrically at both sides of the front-end of sample holder body, and the drive rod is fixed by the fixed axis of the drive rod, which restricts the drive rod to move reciprocally in a straight line driven by the linear stepping motor at the back-end of the main body of the holder body, further leading the tilt stage to rotate around the tilt axis. The tilt angle of the sample loading stage can be precisely controlled by the high precision linear stepping motor in the apparatus. The maximum tilt angle of the sample stage can be adjusted by the included angle between the boss at the bottom surface of the front-end tilt stage and the horizontal direction and the length of the movement guide groove in the apparatus. The apparatus can be used coordinately with TEM and its universality is wide.

公开(公告)号：US20170253842A1

公开(公告)日：2017-09-07

申请号：US15510806

申请日：2015-07-21

Applicant: Beijing University of Technology

Inventor： Hong Yang

IPC: C12M1/107 ,  C12M1/00

CPC classification number: C12M21/04 ,  C12M21/16 ,  C12M23/34 ,  C12M27/18 ,  C12M27/20 ,  C12M29/00 ,  C12M45/06 ,  C12M45/20 ,  Y02E50/343 ,  Y02W10/23

Abstract: A large-type horizontal device and a method for continuous methane fermentation belong to dry biogas fermentation technology. The whole distribution of a fermentation compartment uses a U-shape plane layout which is a snap-back type and uses a material propeller. The material propeller has two axes and two blades and is constantly occluded with counter rotation. The irreversible propulsion of materials can be realized through counter rotation of two occluded blades. The propeller is set at the bottom of the main partition of the fermentation compartment. Since the impeller blades adopt a long side design in rotation axis directions, a large amount materials can be propelled. The propel ability of propeller can be changed through changing of rotation speed. Counter rotation of two occluded blades can realize material propeller without material reverting. The inlet and outlet entrances of the reactor in the disclosure are near to the ground and can be operated conveniently to, therefore, save energy. The homogeneous output of materials and entire plug-flow can be realized at the same time without material mixing in the whole process. This makes fermentation more complete.