Patents by Inventor James Li LIU

James Li 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).

  • Schema to reduce RF traffic and increase the network capacity for large wireless gas sensor networks
    Patent number: 9683977
    Abstract: An apparatus including a wireless transceiver of the gas monitoring processor that receives gas readings and a plurality of gas detectors at different locations within the predetermined geographical area that each periodically measure a current gas level at a respective location of the gas detector wherein for each gas reading of the gas detector, a processor of the gas detector compares the current gas level with a previously measured gas level, if the current gas level is different than the previous gas level, then the gas detector wirelessly transmits a message including the current gas level to the wireless transceiver of the gas monitoring processor and if the current gas level is unchanged from the previous gas level, then the gas detector transmits a beacon message to the wireless transceiver of the gas monitoring processor as an indication that the current gas level is unchanged from the previous gas level.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: June 20, 2017
    Assignee: Honeywell International Inc.
    Inventors: James Li Liu, Kai Ren
  • Schema To Reduce RF Traffic and Increase the Network Capacity for Large Wireless Gas Sensor Networks
    Publication number: 20160069851
    Abstract: An apparatus including a wireless transceiver of the gas monitoring processor that receives gas readings and a plurality of gas detectors at different locations within the predetermined geographical area that each periodically measure a current gas level at a respective location of the gas detector wherein for each gas reading of the gas detector, a processor of the gas detector compares the current gas level with a previously measured gas level, if the current gas level is different than the previous gas level, then the gas detector wirelessly transmits a message including the current gas level to the wireless transceiver of the gas monitoring processor and if the current gas level is unchanged from the previous gas level, then the gas detector transmits a beacon message to the wireless transceiver of the gas monitoring processor as an indication that the current gas level is unchanged from the previous gas level.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 10, 2016
    Inventors: James Li LIU, Kai REN