公开(公告)号：US20220187246A1

公开(公告)日：2022-06-16

申请号：US17436086

申请日：2021-03-17

Applicant: HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION)

Inventor： Dong Lai ZHANG ,  En Chao ZHANG ,  Wei GAO ,  Xiao Lan YAN ,  Shi Min PAN

IPC: G01N27/83 ,  G06N3/02

Abstract: A nondestructive testing method for detecting and distinguishing internal and external defects of a wire rope includes: acquiring a magnetic flux signal and a MFL signal of a detected wire rope; preprocessing the magnetic flux signal and the MFL signal of the detected wire rope; comparing a preprocessed magnetic flux signal and a preprocessed MFL signal with a preset magnetic flux signal threshold and a preset MFL signal threshold respectively, and calculating a defect position; extracting a magnetic flux signal of a defect and an MFL signal of the defect based on the defect position; calculating a defect width of the detected wire rope based on the magnetic flux signal of the defect and the MFL signal of the defect; calculating a defect cross-sectional area loss of the detected wire rope based on the defect width; and determining whether the defect is the internal defect or the external defect.

公开(公告)号：US11170786B1

公开(公告)日：2021-11-09

申请号：US17334790

申请日：2021-05-30

Applicant: Harbin Institute of Technology (Shenzhen) (Shenzhen Institute of Science and Technology Innovation, Harbin Institute of Technology)

Inventor： Qing Liao ,  Yangqian Wang ,  Yang Liu ,  Lin Jiang ,  Xuan Wang ,  Ye Wang

IPC: G10L17/06 ,  G06N20/00 ,  G10L17/04 ,  G10L17/02

Abstract: The present disclosure proposes a federated speaker verification method based on differential privacy, including: 1. performing, by a server, UBM pre-training to obtain an initial UBM; 2. receiving, by the client, the pre-trained initial UBM, and performing initial UBM learning based on local private speech data; 3. performing, by the client, differential privacy protection based on learned statistics; 4. aggregating, by the server, statistics uploaded by multiple clients, and updating the initial UBM; and 5. receiving, by the client, the updated UBM, performing adjustment based on the local private speech data to obtain a GMM for a user of the client, and determining, based on the updated UBM and the GMM, whether a to-be-verified speech is generated by the user of the client.

公开(公告)号：US10996123B2

公开(公告)日：2021-05-04

申请号：US16716510

申请日：2019-12-17

Applicant: Harbin Institute of Technology, Shenzhen

Inventor： Zuohua Li ,  Diankun Liu ,  Nanxi Liu ,  Yingzhu Wang ,  Jun Teng

IPC: G01L1/25 ,  G01N29/12 ,  G01N29/24 ,  G01N29/46

Abstract: Disclosed is a method for determining internal uniaxial stress of steel members based on transverse wave phase spectrum, including: manufacturing a replicated steel member of an in-service steel structure member, where the replicated steel member and the in-service steel structure member are the same in material and thickness; loading a test on the replicated steel member to obtain two stress-spectral parameters; performing ultrasonic determination on the in-service steel structure member using an ultrasonic determination device; and collecting transverse wave signals using a signal acquisition system; processing the collected transverse wave signals through an information processing device to obtain a derived curve of the phase spectrum; capturing a first response frequency of the phase spectrum from the phase spectrum derived curve; and obtaining a uniaxial stress of the in-service steel structure member according to the stress-spectral parameters.

公开(公告)号：US20200216328A1

公开(公告)日：2020-07-09

申请号：US16734970

申请日：2020-01-06

Applicant: Harbin Institute Of Technology, Shenzhen

Inventor： Huanhuan Feng ,  Yuhuan Liu ,  Xing Ma ,  Tingting Zheng ,  Weiwei Zhao ,  Jiaheng Zhang

IPC: C01G49/08 ,  H01F1/01 ,  C01G49/00

Abstract: The present invention relates to a process for preparing a rodlike magnetic ferroferric oxide (Fe3O4) material and use thereof. The preparation includes the following steps: step 1: magnetic Fe3O4 nanoparticle preparation; and step 2: self-assembly of magnetic Fe3O4@SiO2 nanoparticles into a rodlike magnetic material. When in use, the rodlike magnetic Fe3O4 material prepared by the process according to claim 1 is used in micro- and nano-motors, which can implement rotation and deflection in an external magnetic field. The present invention provides a process for preparing a rodlike magnetic Fe3O4 material. The rodlike magnetic ferroferric oxide material prepared by the process is suitable for mass production on an industrial scale, featuring identifiable direction of the magnetic moment, strong magnetism, good magnetic response, simple process, and low cost.

公开(公告)号：US10692480B2

公开(公告)日：2020-06-23

申请号：US16469774

申请日：2017-06-06

Applicant: Harbin Institute of Technology, Shenzhen ,  Yunjiang Lou

Inventor： Shunjie Yao ,  Wudan Lou ,  Yunjiang Lou ,  Yujing Chen

IPC: G10H7/00 ,  G06F40/30 ,  G06K9/20 ,  G06K9/46 ,  G06T5/00 ,  G06K9/00 ,  G06F16/635 ,  G06F16/68 ,  G06F16/36 ,  G10K15/02

Abstract: The disclosure relates to a system and a method for disposing background music and sound effects based on image processing and semantic analysis. The method includes determining the environment and emotional attributes of a text semantics in a reading page by analyzing and processing an acquired reading page image, and selecting music and sound material to synthesize reading background music and sound effects according to the text semantics, so as to achieve sound enhancement in the reading environment. The system includes an image acquisition device for acquiring a reading image of a user, and a processing device having an operation unit for performing the method.