Patents by Inventor Linghao WAN

Linghao WAN 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: 11004017
    Abstract: A library book reservation method based on ultra high frequency RFID technology, including the following steps: step 1, using an RFID tag adhered on each book by using an RFID reading device, wherein the information read by the RFID reading device corresponding to each group of books includes ID information id of the tags, collecting the phase difference ? of the current tag, collecting the current time t of the current tag, and using Tag=<id, t, ?> to represent the read information of the RFID reading device corresponding to each group of books; step 2, sorting triples; and step 3, obtaining a phase change rule of the books, establishing a model, and analyzing the position relation between an RFID antenna and the books to sort the books.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 11, 2021
    Assignee: UNIVERSITY
    Inventors: Lijun Chen, Yuanjie Luo, Qingpu Shi, Linghao Wan, Ying Li, Xi Chen, Afan Zeng, Bin Wang
  • Patent number: 10282576
    Abstract: A book placement posture identification method based on an RSSI signal value of RFID, including: step 1, horizontally moving to read the signal of an RFID tag placed in a book by using an RFID device; step 2, classifying triples with the same EPC number as a category to serve as the RSSI signal values of the internal RFID tag of the book obtained at different moments; step 3, preprocessing the data obtained in step 2; step 4, establishing a model to obtain a time-varying rule of the RSSI value of the RFID tag of the book; step 5, sampling data, training a classification model, and judging the placement posture of the book according to a model established according to test data and a classification model; and step 6, vertically moving to read the signal of the RFID tag placed in the book by using the RFID device.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: May 7, 2019
    Assignee: NANJING UNIVERSITY
    Inventors: Lijun Chen, Yuanjie Luo, Jia Liu, Linghao Wan, Xi Chen, Afan Zeng, Ying Li, Qingpu Shi, Jiaqi Huang
  • Patent number: 10279477
    Abstract: An automatic and intelligent book checking and shelving robot based on the RFID technology, including an RFID system used for identifying book information, a controllable lifting device used for checking books, a navigation sensor for providing a locating navigation function and a four-wheel omni-directional mobile platform for driving the equipment to move. The present invention mainly uses the automatic identification technology and the radio frequency phase technology in the RFID technology, and the machine automation technology to realize an automatic and intelligent book checking and shelving function, including an automatic whole-library book checking function and an automatic whole-library book shelving function.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 7, 2019
    Assignee: NANJING UNIVERSITY
    Inventors: Lijun Chen, Yin Li, Qingpu Shi, Linghao Wan, Xi Chen, Yuanjie Luo, Afan Zeng, Jiaqi Huang
  • Patent number: 10275620
    Abstract: A book sorting method based on RSSI signal values of RFID tags, including the following steps: reading book RFID tags placed in books by using an RFID device, wherein each tag signal includes: an EPC number EPC of the book RFID tag, the RSSI value r of the book RFID tag, and the time t of reading the book RFID tag, and three attribute values corresponding to one book corresponding to one time are marked as a record; classifying books with the same EPC number of the tags as a category, obtaining a curve chart of the RSSI values of the category of book RFID tags according to a time sequence, and preprocessing the curve chart; and establishing a model; and obtaining the position sequence of each book RFID tag according to the model so as to sort the books.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: April 30, 2019
    Assignee: NANJING UNIVERSITY
    Inventors: Lijun Chen, Yuanjie Luo, Jia Liu, Linghao Wan, Xi Chen, Afan Zeng, Ying Li, Qingpu Shi, Jiaqi Huang
  • Publication number: 20180186003
    Abstract: An automatic and intelligent book checking and shelving robot based on the RFID technology, including an RFID system used for identifying book information, a controllable lifting device used for checking books, a navigation sensor for providing a locating navigation function and a four-wheel omni-directional mobile platform for driving the equipment to move. The present invention mainly uses the automatic identification technology and the radio frequency phase technology in the RFID technology, and the machine automation technology to realize an automatic and intelligent book checking and shelving function, including an automatic whole-library book checking function and an automatic whole-library book shelving function.
    Type: Application
    Filed: June 29, 2016
    Publication date: July 5, 2018
    Inventors: Lijun CHEN, Yin LI, Qingpu SHI, Linghao WAN, Xi CHEN, Yuanjie LUO, Afan ZENG, Jiaqi HUANG
  • Publication number: 20180189529
    Abstract: A book placement posture identification method based on an RSSI signal value of RFID, including: step 1, horizontally moving to read the signal of an RFID tag placed in a book by using an RFID device; step 2, classifying triples with the same EPC number as a category to serve as the RSSI signal values of the internal RFID tag of the book obtained at different moments; step 3, preprocessing the data obtained in step 2; step 4, establishing a model to obtain a time-varying rule of the RSSI value of the RFID tag of the book; step 5, sampling data, training a classification model, and judging the placement posture of the book according to a model established according to test data and a classification model; and step 6, vertically moving to read the signal of the RFID tag placed in the book by using the RFID device.
    Type: Application
    Filed: January 11, 2017
    Publication date: July 5, 2018
    Inventors: Lijun CHEN, Yuanjie LUO, Jia LIU, Linghao WAN, Xi CHEN, Afan ZENG, Ying LI, Qingpu SHI, Jiaqi HUANG
  • Publication number: 20180181887
    Abstract: A library book reservation method based on ultra high frequency RFID technology, including the following steps: step 1, using an RFID tag adhered on each book by using an RFID reading device, wherein the information read by the RFID reading device corresponding to each group of books includes ID information id of the tags, collecting the phase difference ? of the current tag, collecting the current time t of the current tag, and using Tag=<id, t, ?> to represent the read information of the RFID reading device corresponding to each group of books; step 2, sorting triples; and step 3, obtaining a phase change rule of the books, establishing a model, and analyzing the position relation between an RFID antenna and the books to sort the books.
    Type: Application
    Filed: June 29, 2016
    Publication date: June 28, 2018
    Inventors: Lijun CHEN, Yuanjie LUO, Qingpu SHI, Linghao WAN, Ying LI, Xi CHEN, Afan ZENG, Bin WANG
  • Publication number: 20180181780
    Abstract: A book sorting method based on RSSI signal values of RFID tags, including the following steps: reading book RFID tags placed in books by using an RFID device, wherein each tag signal includes: an EPC number EPC of the book RFID tag, the RSSI value r of the book RFID tag, and the time t of reading the book RFID tag, and three attribute values corresponding to one book corresponding to one time are marked as a record; classifying books with the same EPC number of the tags as a category, obtaining a curve chart of the RSSI values of the category of book RFID tags according to a time sequence, and preprocessing the curve chart; and establishing a model; and obtaining the position sequence of each book RFID tag according to the model so as to sort the books.
    Type: Application
    Filed: January 11, 2017
    Publication date: June 28, 2018
    Inventors: Lijun CHEN, Yuanjie LUO, Jia LIU, Linghao WAN, Xi CHEN, Afan ZENG, Ying LI, Qingpu SHI, Jiaqi HUANG