Patents by Inventor Zhu DUAN

Zhu DUAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11938784
    Abstract: A health protection system and a method for passengers on a train in a polluted indoor environment are provided. The health protection system includes a basic data acquisition module, an outdoor air quality prediction module, an indoor air quality prediction module, and a ventilation strategy generation module, wherein the basic data acquisition module acquires basic data; the outdoor air quality prediction module predicts outdoor air quality of the train; the indoor air quality prediction module predicts indoor air quality of the train; and the ventilation strategy generation module generates a ventilation strategy and achieves health protection of the passengers on the train. The method includes: predicting indoor and outdoor air quality data information of the train according to the acquired indoor and outdoor air quality data of the train; and generating a corresponding ventilation strategy according to the indoor and outdoor air quality data of the train.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: March 26, 2024
    Assignee: Central South University
    Inventors: Hui Liu, Chao Chen, Zhu Duan, Yanfei Li
  • Publication number: 20240044695
    Abstract: The present invention discloses a train compartment vibration monitoring method and vibration signal feature library establishment and application methods. The non-intrusive train compartment vibration monitoring method only obtains vibration signals of a main measurement point in a train compartment during actual monitoring. The method accurately and truthfully reflects the relationship between the position of a vibration source and the phase offset and amplitude attenuation, can monitor the vibration of an unknown vibration source, and can identify the abnormal vibration to provide a basis for abnormal vibration processing.
    Type: Application
    Filed: January 4, 2021
    Publication date: February 8, 2024
    Inventors: Hui LIU, Chengming YU, Yanfei LI, Jin QIN, Lei ZHANG, Shi YIN, Zhu DUAN
  • Publication number: 20220391717
    Abstract: The present invention discloses a method and system for training a passenger distribution prediction model, and a method and system for guiding passengers. In an embodiment, the passenger distribution is intelligently sensed by means of the characteristics of temperature, humidity and CO2 concentration distribution changes in cars caused by passenger density changes, which avoids the problems of crowd flow and obscuration faced by passenger distribution detection conducted with images, and avoids the difficulty in floor intrusive transformation faced by passenger distribution detection conducted with pressure sensors; the passenger flow is guided by adjusting the brightness of lighting tubes in the cars, for example, the lighting tubes in areas with high passenger density are dimmed, and the lighting tubes in areas with low passenger density are brightened, to guide ordered flow of passengers toward areas with low passenger density. Further details are disclosed herein.
    Type: Application
    Filed: May 19, 2021
    Publication date: December 8, 2022
    Applicant: CENTRAL SOUTH UNIVERSITY
    Inventors: Hui Liu, Zhu Duan, Jin Qin, Haiping Wu, Shi Yin, Chao Chen
  • Publication number: 20210291614
    Abstract: A health protection system and a method for passengers on a train in a polluted indoor environment are provided. The health protection system includes a basic data acquisition module, an outdoor air quality prediction module, an indoor air quality prediction module, and a ventilation strategy generation module, wherein the basic data acquisition module acquires basic data; the outdoor air quality prediction module predicts outdoor air quality of the train; the indoor air quality prediction module predicts indoor air quality of the train; and the ventilation strategy generation module generates a ventilation strategy and achieves health protection of the passengers on the train. The method includes: predicting indoor and outdoor air quality data information of the train according to the acquired indoor and outdoor air quality data of the train; and generating a corresponding ventilation strategy according to the indoor and outdoor air quality data of the train.
    Type: Application
    Filed: July 13, 2020
    Publication date: September 23, 2021
    Applicant: Central South University
    Inventors: Hui LIU, Chao CHEN, Zhu DUAN, Yanfei LI