公开(公告)号：US20230419073A1

公开(公告)日：2023-12-28

申请号：US18014075

申请日：2022-04-27

Applicant: SOUTHEAST UNIVERSITY

Inventor： Huiyan ZHANG ,  Zhenting ZHA ,  Zefeng GE ,  Yuna MA

IPC: G06N3/006 ,  G06N3/084 ,  G06F18/214

CPC classification number: G06N3/006 ,  G06N3/084 ,  G06F18/214

Abstract: The present disclosure provides a method for predicting gasification characteristics of biomass char, including the following steps: step 10): acquiring training data of biomass char gasification; step 20): establishing a BP neural network model including an input layer, a hidden layer and an output layer, input parameters of the BP neural network model being char making temperature, char specific surface area and gasification time, and output parameters being char conversion rate; step 30): training the BP neural network model by adopting the training data, and optimizing the BP neural network model by adopting a particle swarm optimization algorithm to obtain a BP neural network model with high prediction precision; and step 40): predicting the char conversion rate by using the BP neural network model with high prediction precision. According to the method, high-fitness simulation can be performed on the gasification process of biomass char, and the char gasification characteristics can be accurately predicted.

公开(公告)号：US20230410659A1

公开(公告)日：2023-12-21

申请号：US18249715

申请日：2021-04-12

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu LI ,  Jinchao HU ,  Weiming HU

IPC: G08G1/16 ,  G06V20/70 ,  G06V10/82 ,  G06V10/26 ,  G06V40/20 ,  G06V10/77 ,  G06V10/774 ,  G06V20/52 ,  G08G1/052

CPC classification number: G08G1/166 ,  G06V20/70 ,  G06V10/82 ,  G06V10/26 ,  G06V40/25 ,  G06V10/7715 ,  G06V10/774 ,  G06V20/52 ,  G08G1/052

Abstract: A method for predicting a pedestrian crossing behavior for an intersection includes the following steps: step 1: designing an immediate reward function; step 2: establishing a fully convolutional neural network-long-short term memory network (FCN-LSTM) model to predict a motion reward function; step 3: training the fully convolutional neural network-long-short term memory network (FCN-LSTM) model based on reinforcement learning; and step 4: predicting the pedestrian crossing behavior and performing hazard early-warning. The technical solution does not require establishment of a complex pedestrian movement model or preparation of massive labeled data sets, achieves autonomous learning of pedestrian crossing behavior features at the intersection, predicts their walking, stopping, running and other behaviors, especially predicts the pedestrian crossing behavior when inducing hazards such as pedestrian-vehicle collision and scratch in real time, and performs hazard early-warning on crossing pedestrians and passing vehicles.

公开(公告)号：US20230407083A1

公开(公告)日：2023-12-21

申请号：US18335100

申请日：2023-06-14

Applicant: Southeast University

Inventor： Sang LUO ,  Jing HU

IPC: C08L63/00 ,  C08K5/3462 ,  C08K5/17 ,  C08K5/098 ,  C08J3/20 ,  C04B24/28

CPC classification number: C08L63/00 ,  C08K5/3462 ,  C08K5/17 ,  C08K5/098 ,  C08J3/203 ,  C04B24/281 ,  C04B2111/0075

Abstract: The present disclosure discloses an economical epoxy resin material for epoxy asphalt with low-temperature resistance and high flexibility as well as a preparation method thereof. The material comprises 60 parts of an epoxy resin main agent, 0.4 parts to 1.6 parts of a modifying gent, 31 parts to 36.5 parts of an active curing agent, 0.5 parts to 1.5 parts of a titanate coupling agent, and 1.6 parts to 6.4 parts of a reversible deformation additive.

公开(公告)号：US11829693B2

公开(公告)日：2023-11-28

申请号：US18011443

申请日：2022-03-09

Applicant: SOUTHEAST UNIVERSITY

Inventor： Peng Cao ,  Jiahao Wang ,  Haiyang Jiang

IPC: G06F30/3315 ,  G06F30/337 ,  G06F119/12

CPC classification number: G06F30/3315 ,  G06F30/337 ,  G06F2119/12

Abstract: Disclosed in the present invention is a method for optimizing circuit timing based on a flexible register timing library. First, registers are simulated respectively in a case of a plurality of groups of an input signal conversion time, a clock signal conversion time, and a register load capacitance, corresponding actual propagation delays at this time are obtained by changing setup slack and hold slack of the registers, and actual propagation delays of the registers under specific input signal conversion time, clock signal conversion time, register load capacitances, setup slack, and hold slack are obtained through linear interpolation, to establish a flexible register timing library; and then static timing analysis is performed on all register paths in a circuit by using the library, a minimum clock cycle under a condition of satisfying that a setup time margin and a hold time margin are both greater than zero is found by changing the setup slack and hold slack of the registers, thereby improving the performance of the circuit without changing the design of the circuit and without increasing the area overheads of the circuit.

公开(公告)号：US11824267B2

公开(公告)日：2023-11-21

申请号：US17605005

申请日：2021-01-12

Applicant: SOUTHEAST UNIVERSITY ,  PURPLE MOUNTAIN LABORATORIES

Inventor： Zhihao Jiang ,  Ke Zhang ,  Wei Hong

IPC: H01Q21/06 ,  H01Q21/24 ,  H01Q1/36 ,  H01Q9/04 ,  H01Q19/00 ,  H01Q21/00 ,  H01Q21/30

CPC classification number: H01Q21/24 ,  H01Q1/36 ,  H01Q9/0421 ,  H01Q9/0464 ,  H01Q19/005 ,  H01Q21/0037 ,  H01Q21/065 ,  H01Q21/30

Abstract: A compact dual-band triple-polarized antenna based on shielded mushroom structures includes a vertically-polarized radiator and a horizontally-polarized radiator. Two parts are fixedly connected in a disc-shaped structure. The vertically-polarized radiator and the horizontally-polarized radiator are both multilayer structures. Each multilayer structure includes a plurality of concentric circles, and the plurality of concentric circles include a plurality of dielectric substrates. The vertically-polarized radiator and horizontally-polarized radiator each include a plurality of shielded mushroom cell structures. Each shielded mushroom cell structure includes at least three metal layers and a metallic shorting pin, and the metallic shorting pin connects at least two of the at least three metal layers. By controlling dispersion properties of the each shielded mushroom cell structure, a multi-frequency pattern diversity device possessing both vertical polarization and dual horizontal polarization radiation characteristics in two pre-defined frequencies is designed.

公开(公告)号：US11783594B2

公开(公告)日：2023-10-10

申请号：US17267493

申请日：2019-05-16

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Li ,  Zhiyong Zheng ,  Kun Wei

IPC: G06V20/58 ,  G06T7/11 ,  G06V20/56 ,  G06V40/10 ,  G06F18/25 ,  G06N3/045 ,  G06V10/764 ,  G06V10/80 ,  G06V10/82 ,  G06V10/44

CPC classification number: G06V20/58 ,  G06F18/253 ,  G06N3/045 ,  G06T7/11 ,  G06V10/454 ,  G06V10/764 ,  G06V10/806 ,  G06V10/82 ,  G06V20/56 ,  G06V40/10

Abstract: The present invention discloses a method for segmenting pedestrians in roadside images using a variable-scale multi-feature fusion convolutional network. It addresses the challenge of significant changes in pedestrian scale by using two parallel convolutional neural networks to extract the local and global features at different scales, and then fusing them to obtain a variable-scale multi-feature fusion convolutional neural network, and this network is trained using roadside pedestrian images to realize accurate pedestrian segmentation, avoiding issues with boundary fuzziness and missing segments commonly found in single-network methods.

公开(公告)号：US11774243B2

公开(公告)日：2023-10-03

申请号：US17723633

申请日：2022-04-19

Applicant: Southeast University

Inventor： Jiyao Wang ,  Wei Xu ,  Ling Qin

IPC: G01C19/06

CPC classification number: G01C19/06

Abstract: An electrically-driven gyroscope having a housing capable of alternate rotation and a control method thereof, which relate to the field of electrically-driven gyroscopes. The electrically-driven gyroscope includes a rotating housing, an internal rotator, a drive motor composed of an electrical stator part and a rotating part, a drive circuit, and a battery. The internal rotator is mechanically connected to the rotating part of the drive motor, and they can coaxially rotate. The electrical stator part of the motor, the drive circuit, and the battery are mutually electrically connected, and are all connected inside the rotating housing.

公开(公告)号：US11757723B2

公开(公告)日：2023-09-12

申请号：US17797262

申请日：2022-03-23

Applicant: SOUTHEAST UNIVERSITY

Inventor： Guanghui Wen ,  Xuqiang Lei ,  Yuezu Lv ,  Dan Zhao ,  Jialing Zhou

IPC: H04L9/40 ,  H04L41/12 ,  H04L41/14

CPC classification number: H04L41/12 ,  H04L41/145 ,  H04L63/1416

Abstract: The present disclosure discloses a distributed secure state reconstruction method based on a double-layer dynamic switching observer. The method includes the following steps: constructing a dynamics model of a sensing channel of a multi-agent system after the sensing channel is attacked according to the multi-agent system; building a double-layer observer for each multi-agent in combination with a specific multi-agent system model, constructing a proper observation communication topology, and designing a corresponding residual generator; analyzing dynamic information generating a residual threshold aiming at an observation model, checking a magnitude between each residual signal and the threshold, dynamically switching the communication topology between the observers according to the compared magnitude, and performing a new data communication interaction; and performing iterative updating to generate new observation data in combination with self observation data and received neighbor observation information, and taking whether the residual signal is greater than a current threshold or not as a standard for determining whether a corresponding communication channel is attacked or not. According to the present disclosure, all transmission channels subjected to malicious attacks can he correctly identified, and the real state of the system can be securely reconstructed.

公开(公告)号：US11709281B2

公开(公告)日：2023-07-25

申请号：US17051428

申请日：2020-01-16

Applicant: SOUTHEAST UNIVERSITY

Inventor： Chengfa Gao ,  Bo Chen ,  Yongsheng Liu ,  Puyu Sun

IPC: G01S19/51 ,  G01S19/07 ,  G01S19/24

CPC classification number: G01S19/51 ,  G01S19/072 ,  G01S19/243

Abstract: The present invention discloses a high-precision point positioning method and device based on a smartphone. The method of the present invention, which belongs to the technical field of satellite positioning, improves the conventional PPP uncombined positioning model, and only uses original GNSS observation values received by a smartphone to carry out high-precision positioning without GNSS reference stations. The positioning method of the present invention comprises following steps: acquiring original observation values of the smartphone, such as GNSS pseudoranges and carrier phases; after preprocessing the data to decrease part of error influences, generating an uncombined model from the original observation values according to an improved precise point positioning method based on an estimation of double clock biases; determining each satellite observation value weight according to a satellite elevation angle; and carrying out filtering positioning by an improved Kalman filtering method to give a high-precision point positioning result.

公开(公告)号：US20230221538A1

公开(公告)日：2023-07-13

申请号：US18180120

申请日：2023-03-07

Applicant: INSTITUTE OF MEDICAL DEVICES (SUZHOU), SOUTHEAST UNIVERSITY

Inventor： Zhongze Gu ,  Qiwei Li ,  Zaozao Chen

IPC: G02B21/00 ,  G02B1/00 ,  G02B26/00

CPC classification number: G02B21/0076 ,  G02B1/005 ,  G02B26/007

Abstract: Disclosed are a photonic crystal microscope and a method of measuring cellular forces. The photonic crystal substrate includes a photonic crystal substrate, a stage, a probe light source, and an imaging assembly, the photonic crystal substrate being disposed above the stage, the probe light source and the imaging assembly being sequentially disposed at a side of the stage opposite the photonic crystal substrate, the photonic crystal substrate being configured to culture a to-be-measured cell, the photonic crystal substrate being deformable when the to-be-measured cell grows on the photonic crystal substrate; the probe light source is configured to emit probe light to the photonic crystal substrate; the photonic crystal substrate is configured to reflect the probe light to the imaging assembly; the imaging assembly is configured to receive the light reflected from the photonic crystal substrate to perform imaging.