Patents by Inventor Zhengfeng LIU

Zhengfeng LIU 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).

  • Publication number: 20240151703
    Abstract: A surface water quality monitoring method based on a high spatial resolution satellite includes: step 1. building standard surface water quality pools by mixing natural water bodies with clean water in different proportions to obtain surface water quality data; step 2. obtaining high spatial resolution remote sensing images for processing; step 3. identifying remote sensing bands with higher correlation through correlation analysis by presetting ratio values of remote sensor data bands and the standard surface water quality pools; step 4. building a water quality parameter retrieval model, and comparing and retrieving the remote sensing bands with higher correlation and the surface water quality data to obtain water quality data; and step 5. identifying abnormal points of the water quality based on the water quality data and water quality data threshold of the surface water.
    Type: Application
    Filed: January 18, 2024
    Publication date: May 9, 2024
    Applicants: WUHAN UNIVERSITY, CHINA YANGTZE POWER CO., LTD.
    Inventors: Yanjun ZHANG, Anni QIU, Wenxun DONG, Lan LUO, Yuanxin SONG, Zhengfeng BAO, Hui CAO, Xinbo LIU, Xuetao ZENG
  • Patent number: 11345553
    Abstract: A non-contact transporting apparatus (10) includes: a negative pressure assembly (100) configured to generate a negative pressure airflow within the non-contact transporting apparatus; and an ultrasonic assembly (200) connected to the negative pressure assembly (100). The ultrasonic assembly (200) includes: an ultrasonic transducer (210) configured to convert a high-frequency ultrasonic electrical signal into a high-frequency mechanical vibration, one end of the ultrasonic transducer (210) is connected to the negative pressure assembly (100); an ultrasonic horn (230) configured to amplify the high-frequency mechanical vibration, one end of the ultrasonic horn (230) is connected to one end of the ultrasonic transducer (210) away from the negative pressure assembly (100); and an ultrasonic chuck (250) configured to amplify and convert the high-frequency mechanical vibration, the ultrasonic chuck (250) is connected to one end of the ultrasonic horn (230) away from the ultrasonic transducer (210).
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: May 31, 2022
    Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.
    Inventors: Song Lu, Jin Wang, Feng Cao, Chengquan Zhou, Zhengfeng Liu, Zekai Xie, Jiaming You, Bing Ding, Yunfeng Gao
  • Publication number: 20210221627
    Abstract: A non-contact transporting apparatus (10) includes: a negative pressure assembly (100) configured to generate a negative pressure airflow within the non-contact transporting apparatus; and an ultrasonic assembly (200) connected to the negative pressure assembly (100). The ultrasonic assembly (200) includes: an ultrasonic transducer (210) configured to convert a high-frequency ultrasonic electrical signal into a high-frequency mechanical vibration, one end of the ultrasonic transducer (210) is connected to the negative pressure assembly (100); an ultrasonic horn (230) configured to amplify the high-frequency mechanical vibration, one end of the ultrasonic horn (230) is connected to one end of the ultrasonic transducer (210) away from the negative pressure assembly (100); and an ultrasonic chuck (250) configured to amplify and convert the high-frequency mechanical vibration, the ultrasonic chuck (250) is connected to one end of the ultrasonic horn (230) away from the ultrasonic transducer (210).
    Type: Application
    Filed: August 7, 2017
    Publication date: July 22, 2021
    Applicant: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.
    Inventors: Song LU, Jin WANG, Feng CAO, Chengquan ZHOU, Zhengfeng LIU, Zekai XIE, Jiaming YOU, Bing DING, Yunfeng GAO