Patents by Inventor Chin Gian Hooi

Chin Gian Hooi 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).

  • Altitude estimation using differential pressure sensors in ground effect
    Patent number: 11548628
    Abstract: An interference sensor dataset associated with interference between airflows from at least two rotors in a multicopter and a first isolated sensor dataset and a second isolated sensor dataset which are associated with isolated airflows from a first rotor and a second rotor in the multicopter, respectively, are received. A generalized flow model associated with a generalized rotor is received. An altitude for the multicopter is generated based at least in part on the interference sensor dataset, the first isolated sensor dataset, the second isolated sensor dataset, and the generalized flow model, including by using a non-linear filter that builds a consolidated probability function associated with altitude that reconciles the interference sensor dataset, the first isolated sensor dataset, and the second isolated sensor dataset with the generalized flow model.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: January 10, 2023
    Assignee: Kitty Hawk Corporation
    Inventor: Chin Gian Hooi
  • ALTITUDE ESTIMATION USING DIFFERENTIAL PRESSURE SENSORS IN GROUND EFFECT
    Publication number: 20220161924
    Abstract: An interference sensor dataset associated with interference between airflows from at least two rotors in a multicopter and a first isolated sensor dataset and a second isolated sensor dataset which are associated with isolated airflows from a first rotor and a second rotor in the multicopter, respectively, are received. A generalized flow model associated with a generalized rotor is received. An altitude for the multicopter is generated based at least in part on the interference sensor dataset, the first isolated sensor dataset, the second isolated sensor dataset, and the generalized flow model, including by using a non-linear filter that builds a consolidated probability function associated with altitude that reconciles the interference sensor dataset, the first isolated sensor dataset, and the second isolated sensor dataset with the generalized flow model.
    Type: Application
    Filed: February 11, 2022
    Publication date: May 26, 2022
    Inventor: Chin Gian Hooi
  • Altitude estimation using differential pressure sensors in ground effect
    Patent number: 11279475
    Abstract: A plurality of sensor datasets is received including: (1) an interference sensor dataset which is associated with interference between airflow from a first rotor in a multicopter and airflow from a second rotor in the multicopter, (2) a first and a second isolated sensor dataset which are associated with isolated airflows from the first rotor and the second rotor, respectively. A generalized flow model associated with a generalized rotor is received and an altitude for the multicopter is generated based at least in part on the plurality of sensor datasets and the generalized flow model, including by using a non-linear filter that builds a consolidated probability function associated with altitude that reconciles the plurality of sensor datasets with the generalized flow model.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: March 22, 2022
    Assignee: Kitty Hawk Corporation
    Inventor: Chin Gian Hooi
  • ALTITUDE ESTIMATION USING DIFFERENTIAL PRESSURE SENSORS IN GROUND EFFECT
    Publication number: 20210009261
    Abstract: A plurality of sensor datasets is received including: (1) an interference sensor dataset which is associated with interference between airflow from a first rotor in a multicopter and airflow from a second rotor in the multicopter, (2) a first and a second isolated sensor dataset which are associated with isolated airflows from the first rotor and the second rotor, respectively. A generalized flow model associated with a generalized rotor is received and an altitude for the multicopter is generated based at least in part on the plurality of sensor datasets and the generalized flow model, including by using a non-linear filter that builds a consolidated probability function associated with altitude that reconciles the plurality of sensor datasets with the generalized flow model.
    Type: Application
    Filed: November 27, 2019
    Publication date: January 14, 2021
    Inventor: Chin Gian Hooi
  • Altitude estimation using differential pressure sensors in ground effect
    Patent number: 10526080
    Abstract: A plurality of sensor datasets is received including: (1) an interference sensor dataset which is associated with interference between airflow from a first rotor in a multicopter and airflow from a second rotor in the multicopter, (2) a first and a second isolated sensor dataset which are associated with isolated airflows from the first rotor and the second rotor, respectively. A generalized flow model associated with a generalized rotor is received and an altitude for the multicopter is generated based at least in part on the plurality of sensor datasets and the generalized flow model, including by using a non-linear filter that builds a consolidated probability function associated with altitude that reconciles the plurality of sensor datasets with the generalized flow model.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 7, 2020
    Assignee: Kitty Hawk Corporation
    Inventor: Chin Gian Hooi