Patents Assigned to Tsinghua University
  • Patent number: 11518409
    Abstract: Embodiments of the present application disclose a safety control method and a safety control system based on environmental risk assessment for an intelligent connected vehicle. The method includes: when a vehicle is in an automatic driving mode, acquiring environmental parameter information of the vehicle in a current driving environment; determining a target driving control parameter which meets a preset safe driving condition under the current environmental parameter; and managing a current automatic driving level of the vehicle by using the target driving control parameter.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: December 6, 2022
    Assignee: Tsinghua University
    Inventors: Hong Wang, Wenhao Yu, Ziwen Duan, Jun Li
  • Patent number: 11514206
    Abstract: The disclosure provides a method for planning a power distribution network, an apparatus for planning a power distribution network, and a storage medium. The method includes: establishing a model for planning the power distribution network, the model including a target function and constraints, the target function for minimizing a cost of the power distribution network when branches and nodes are installed into the power distribution network, the nodes including transformers and substations, the constraints including a power balance constraint of the power distribution network, a power constraint of the branches, a power constraint of the transformers, a radial operation constraint of the power distribution network, a fault constraint, a calculation constraint of indices of a reliability, a constraint of the indices of the reliability, and a logic constraint; and solving the model to determine whether the branches and the nodes are installed into the power distribution network.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: November 29, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Wenchuan Wu, Boming Zhang, Zihao Li, Hongbin Sun, Bin Wang, Qinglai Guo
  • Patent number: 11514667
    Abstract: A method and an apparatus for camera-free light field video processing with all-optical neural network are disclosed. The method includes: mapping the light field video by a digital micro-mirror device (DMD) and an optical fiber coupler, a two-dimensional 2D spatial optical signal into a one-dimensional 1D input optical signal; realizing a multiply-accumulate computing model in a structure of all-optical recurrent neural network structure, and processing the 1D input signal to obtain the processed signal; and receiving the processed signal and outputting an electronic signal by a photodetector, or receiving the processed signal by a relay optical fiber for relay transmission of the processed signal. The method and system here realize light field video processing without the use of a camera and the whole system is all-optical, thus possessing the advantage in computing speed and energy-efficiency.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: November 29, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Lu Fang, Tiankuang Zhou, Siyuan Gu, Xiaoyun Yuan, Qionghai Dai
  • Patent number: 11515438
    Abstract: A solar cell including: a silicon substrate; a back electrode; a doped silicon layer; an upper electrode, wherein the upper electrode includes a plurality of three-dimensional nanostructures extending along a same direction; an electrode lead, wherein a direction of the electrode lead intersects with the direction of the plurality of three-dimensional nanostructures; wherein the three-dimensional nanostructures includes a first rectangular structure, a second rectangular structure, and a triangular prism structure; the first rectangular structure, the second rectangular structure, and the triangular prism structure are stacked, a first width of a bottom surface of the triangular prism structure is equal to a second width of a top surface of the second rectangular structure, and is greater than a third width of a top surface of the first rectangular structure, materials of the first rectangular structure and the triangular prism structure are metal.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 29, 2022
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Zhen-Dong Zhu, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 11513418
    Abstract: An addressing system, an addressing apparatus and a computing apparatus are provided. The addressing system includes a first acousto-optic processing component and a second acousto-optic processing component. The first acousto-optic processing component is used for generating a diffraction beam for an addressing operation in a preset number of dimensions. The second acousto-optic processing component is used for determining emitting directions of the generated diffraction beam in various dimensions, and outputting a diffraction beam according to the determined emitting directions to perform an addressing operation for a qubit array in the preset number of dimensions. A first radio frequency of the diffraction beam generated by the first acousto-optic processing component is used for compensating for a second radio frequency of diffraction beams outputted by the second acousto-optic processing component from different emitting directions.
    Type: Grant
    Filed: November 24, 2019
    Date of Patent: November 29, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Luming Duan, Zichao Zhou
  • Patent number: 11514607
    Abstract: The disclosure provides 3D reconstruction methods and devices. The method includes: obtaining data captured by the camera and data captured by the inertial measurement unit; obtaining a pose of the camera based on the data; obtaining an adjustment value of the pose of the camera and an adjustment value of bias of the inertial measurement unit; updating the pose of the camera based on the adjustment value of the pose of the camera; determining whether the adjustment value of bias of the inertial measurement unit is less than a preset value; in response to the adjustment value of bias of the inertial measurement unit being greater than or equal to the preset value, determining that a current loop for 3-dimensional reconstruction is an error loop; removing the error loop; and constructing a 3-dimensional model for surroundings of the camera based on the updated pose of the camera and remaining loops.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: November 29, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Lu Fang, Dawei Zhong, Qionghai Dai
  • Patent number: 11513485
    Abstract: The present disclosure provides a stable region determining method for distributed cyber-physical power systems with multiple time delays, including: first establishing a state space expression of the cyber-physical power systems under distributed control with multiple time delays; converting the state space expression to frequency domain through Laplace transform to obtain a characteristic equation for multiple time delays of the cyber-physical power systems under distributed control, and establishing a marginally stable characteristic equation with unified time delay to obtain a marginally stable characteristic equation for multiple time delays of the cyber-physical power systems under distributed control with unified time delay; in each time delay direction, solving a stable boundary for time delay of the cyber-physical power systems under distributed control; connecting the stable boundaries for time delays in all time delay directions, and generating a stable domain for time delays of the cyber-physical
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: November 29, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Qinglai Guo, Hongbin Sun, Luo Xu, Wenchuan Wu
  • Publication number: 20220374688
    Abstract: A training method and a training device for a neural network based on memristors are provided. The neural network includes a plurality of neuron layers connected one by one and weight parameters between the plurality of neuron layers, and the training method includes: training the weight parameters of the neural network, and programming a memristor array based on the weight parameters after being trained to write the weight parameters after being trained into the memristor array; and updating a critical layer or several critical layers of the weight parameters of the neural network by adjusting conductance values of at least part of memristors of the memristor array.
    Type: Application
    Filed: March 6, 2020
    Publication date: November 24, 2022
    Applicant: TSINGHUA UNIVERSITY
    Inventors: Huaqiang WU, Peng YAO, Bin GAO, Qingtian ZHANG, He QIAN
  • Patent number: 11508927
    Abstract: An organic electroluminescence device, a preparation method thereof, and a display apparatus, the organic electroluminescence device including an organic light emitting layer which includes a host material, a sensitizer material, and a resonance thermally activated delayed fluorescent material, where the host material is a wide bandgap material, and the sensitizer material is a thermally activated delayed fluorescent material. The singlet state energy level of the thermally activated delayed fluorescent material falls between the singlet state energy level of the wide bandgap material and the singlet state energy level of the resonance thermally activated delayed fluorescent material. The triplet state energy level of the thermally activated delayed fluorescent material falls between the triplet state energy level of the wide bandgap material and the triplet state energy level of the resonance thermally activated delayed fluorescent material.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: November 22, 2022
    Assignees: KunShan Go-Visionox Opto-Electronics Co., Ltd, TSINGHUA UNIVERSITY
    Inventors: Lian Duan, Minghan Cai, Xiaozeng Song, Jinbei Wei
  • Patent number: 11504812
    Abstract: A method for making an infrared light absorber is provided, and the method includes following steps: providing a first carbon nanotube array on a substrate; truncating the carbon nanotube array by irradiating a top surface of the carbon nanotube array by a laser beam in two directions, the top surface being away from the substrate, wherein the two directions being at an angle, the angle is in a range of 30 degrees to 90 degrees.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 22, 2022
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ying-Cheng Wang, Zhong-Zheng Huang, Yuan-Hao Jin, Qun-Qing Li, Shou-Shan Fan
  • Publication number: 20220366681
    Abstract: A vision-LiDAR fusion method and system based on deep canonical correlation analysis are provided. The method comprises: collecting RGB images and point cloud data of a road surface synchronously; extracting features of the RGB images to obtain RGB features; performing coordinate system conversion and rasterization on the point cloud data in turn, and then extracting features to obtain point cloud features; inputting point cloud features and RGB features into a pre-established and well-trained fusion model at the same time, to output feature-enhanced fused point cloud features, wherein the fusion model fuses RGB features to point cloud features by using correlation analysis and in combination with a deep neural network; and inputting the fused point cloud features into a pre-established object detection network to achieve object detection. A similarity calculation matrix is utilized to fuse two different modal features.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 17, 2022
    Applicant: Tsinghua University
    Inventors: Xinyu ZHANG, Li WANG, Jun LI, Lijun ZHAO, Zhiwei LI, Shiyan ZHANG, Lei YANG, Xingang WU, Hanwen GAO, Lei ZHU, Tianlei ZHANG
  • Patent number: 11502260
    Abstract: Irridium complexes with molecular formula of L3Ir, together with application thereof and organic electroluminescent devices, wherein Ir is the central metal atom and L is a ligand. The structure of these complexes is of the following formula (I): Ar is selected from substituted or unsubstituted aryl groups with 6 to 30 carbon atoms, and substituted or unsubstituted heterocyclic aryl groups with 4 to 30 carbon atoms. R1 to R7 are each independently selected from atoms or groups described herein. The substituent group on above-mentioned Ar or R1 to R7 is independently selected from F, Cl, Br, I, CHO, CN, substituted or unsubstituted alkyl or cycloalkyl groups with 1 to 30 carbon atoms, fluoroalkyl groups, alkoxy groups, and thioalkoxy groups.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 15, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Juan Qiao, Jie Xue
  • Patent number: 11502253
    Abstract: A phase transformation electronic device comprises: a first conductive layer; a second conductive layer opposite to and spaced from the first conductive layer; a phase transformation material layer disposed between the first conductive layer and the second conductive layer, wherein the phase transformation material layer is formed by a hydrogen-containing transition metal oxide having a structural formula of ABOxHy, wherein A is one or more of alkaline earth metal elements and rare-earth metal elements, B is one or more of transition metal elements, x is a numeric value in a range of 1 to 3, and y is a numeric value in a range of 0 to 2.5; and an ionic liquid layer disposed between the phase transformation material layer and the first conductive layer, wherein the ionic liquid layer is capable of providing hydrogen ions and oxygen ions.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: November 15, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Pu Yu, Nian-Peng Lu, Jian Wu, Shu-Yun Zhou
  • Patent number: 11490821
    Abstract: The present disclosure provides a non-contact neck-based respiratory and pulse signal detection method and apparatus, and an imaging device. The method includes: acquiring 3D morphological information of a neck of a human body in real-time; and acquiring a respiratory signal and an electrocardiogram signal of the human body on the basis of the 3D morphological information of the neck.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: November 8, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Huijun Chen, Chunyao Wang, Chen Zhang, Haikun Qi, Qiang Zhang, Yajie Wang
  • Patent number: 11493937
    Abstract: A takeoff and landing control method of a multimodal air-ground amphibious vehicle includes: receiving dynamic parameters of the multimodal air-ground amphibious vehicle; processing the dynamic parameters by a coupled dynamic model of the multimodal air-ground amphibious vehicle to obtain dynamic control parameters of the multimodal air-ground amphibious vehicle, wherein the coupled dynamic model of the multimodal air-ground amphibious vehicle comprises a motion equation of the multimodal air-ground amphibious vehicle in a touchdown state; and the motion equation of the multimodal air-ground amphibious vehicle in a touchdown state is determined by a two-degree-of-freedom suspension dynamic equation and a six-degree-of-freedom motion equation of the multimodal air-ground amphibious vehicle in the touchdown state; and controlling takeoff and landing of the multimodal air-ground amphibious vehicle according to the dynamic control parameters of the multimodal air-ground amphibious vehicle.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: November 8, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Xinyu Zhang, Jun Li, Qifan Tan, Jianxi Luo, Huaping Liu, Kangyao Huang, Xingang Wu
  • Patent number: 11488074
    Abstract: The disclosure relates to a quantile probabilistic short-term power load ensemble forecasting method. The method includes: dividing historical power load data of a power system into a first data set and a second data set; performing bootstrap sampling on the first data set to generate multiple training data sets; training a neural network quantile regression model, a random forest quantile regression model and a gradient boosting regression tree regression model for the each training data set to obtain quantile forecasting models; establishing an optimization model with an objective function for minimizing the quantile loss for the second data set, and determining a weight for each of the quantile regression models, to calculate a power load ensemble forecasting model for predicting the power load in the power system.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: November 1, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Yi Wang, Ning Zhang, Chongqing Kang, Ershun Du
  • Patent number: 11489596
    Abstract: An image collection chip, an object imaging recognition device and an object imaging recognition method are provided. In each set of the pixel confirmation modules of the chip, each modulation unit and each sensing unit are correspondingly provided up and down on the optical modulation layer and the image sensing layer respectively; each modulation unit is provided with at least one modulation subunit, and each of the modulation subunits is provided with several modulation holes penetrating into the optical modulation layer; and the respective modulation holes in a same modulation subunit are arranged into a two-dimensional graphic structure having a specific pattern.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: November 1, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Kaiyu Cui, Xusheng Cai, Hongbo Zhu, Yidong Huang, Wei Zhang, Xue Feng, Fang Liu
  • Patent number: 11488734
    Abstract: Disclosed are an electrical penetration assembly, a manufacturing method thereof, and an electrical penetration device, which relate to the technical field of electrical penetration.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 1, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: He Yan, Xingzhong Diao, Zhichun Fan, Yong Zhang, Haitao Wang, Yujie Dong, Zuoyi Zhang
  • Patent number: 11485043
    Abstract: An additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam cutting. One electron beam emitting, focusing, and scanning device (6) is capable of emitting electron beams (67, 68) in three modes of heating, selective melting, and electron beam cutting. The electron beam in the heating mode is emitted to scan and preheat a powder bed (7). The electron beam (67) in the selective melting mode is emitted to scan and melt powder (71) in a section outline to form a section layer of a component. The electron beam (68) in the electron beam cutting mode is emitted to perform one or more cutting scans on inner and outer outlines (74, 75) of a section of the component to obtain accurate and smooth inner and outer outlines of the section. The heating, melting deposition, and outline cutting processes are repeated to obtain a required three-dimensional physical component.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: November 1, 2022
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Feng Lin, Bin Zhou, Wentao Yan, Hongxin Li, Lei Zhang, Ting Zhang, Chao Guo
  • Publication number: 20220344381
    Abstract: A micro spectrum chip based on units of different shapes. The micro spectrum chip includes a CIS wafer and an optical modulation layer. The optical modulation layer includes several micro-nano structure units arranged on the surface of a photosensitive area of the CIS wafer. Each micro-nano structure unit includes a plurality of micro-nano structure arrays, and in each micro-nano structure unit, different micro-nano structure arrays are two-dimensional gratings composed of internal units of different shapes. In each micro-nano structure unit in this scheme, different micro-nano structure arrays have different shapes of internal units, and each group of micro-nano structure arrays have different modulation effects on lights with different wavelengths. The degree of freedom of “shape” is fully utilized to obtain a rich modulation effect on the incident light. A two-dimensional grating structure based on internal units of different shapes is utilized.
    Type: Application
    Filed: October 12, 2020
    Publication date: October 27, 2022
    Applicant: Tsinghua University
    Inventors: Kaiyu Cui, Jiawei Yang, Yidong Huang, Wei Zhang, Xue Feng, Fang Liu