Patents by Inventor Jihuan Tian

Jihuan Tian 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: 20230037452
    Abstract: An apparatus for detecting a surface condition of an object. The apparatus comprises a light source, a reflective face and an imaging device. The imaging device is configured to receive reflected light emanating from the reflective face. The reflective face is oriented at a first acute angle relative to an optical axis of the imaging device, such that a projection area of a virtual image of a surface formed via the reflective face is greater than a projection area of the surface on a plane perpendicular to the optical axis.
    Type: Application
    Filed: February 12, 2020
    Publication date: February 9, 2023
    Inventors: Jihuan Tian, Jiafan Zhang, Qi Lu
  • Patent number: 11511432
    Abstract: A method for controlling a robot includes the steps of: deciding whether there is a non-permanent object in a vicinity of the robot; if there is a non-permanent object, deciding whether the object qualifies for extended protection or not; and defining a safety zone around the object which the robot must not enter or in which a maximum allowed speed of the robot is less than outside the safety zone. The safety zone extends to a greater distance from the object if the object qualifies for extended protection than if it does not.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: November 29, 2022
    Assignee: ABB Schweiz AG
    Inventors: Nicolas Lehment, Andreas Decker, Richard Roberts, Bjoern Matthias, Jihuan Tian
  • Patent number: 11493338
    Abstract: An apparatus for detecting tilt of a fixture and method thereof.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: November 8, 2022
    Assignee: ABB SCHWEIZ AG
    Inventors: Hao Gu, Jihuan Tian, Cheng Li, Martin Kefer
  • Patent number: 11340576
    Abstract: The present disclosure relates to a method and apparatus for estimating a systematic error of a commissioning tool of an industrial robot, the industrial robot including an operational tool and an application camera, the commissioning tool including a touchscreen and a stylus, the method including: a driving step of driving the operational tool to rotate around a preset rotation axis; a first image obtaining step of obtaining a plurality of first images of the operational tool during rotation; and a first offset calculating step of calculating a first offset of the stylus relative to the operational tool according to the plurality of first images, so as to obtain the systematic error.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: May 24, 2022
    Assignee: ABB SCHWEIZ AG
    Inventors: Cheng Li, Hao Gu, Jihuan Tian
  • Patent number: 11207781
    Abstract: Disclosed are systems and methods to provide a method for calibrating a touchscreen coordinate system of a touchscreen with an industrial robot coordinate system of an industrial robot for industrial robot commissioning and industrial robot system and control system using the same. In one form the systems and methods include attaching an end effector to the industrial robot; (a) moving the industrial robot in a compliant way until a stylus of the end effector touches a point on the touchscreen; (b) recording a position of the stylus of the end effector in the industrial robot coordinate system when it touches the point of the touchscreen; (c) recording a position of the touch point on the touchscreen in the touchscreen coordinate system; and calculating a relation between the industrial robot coordinate system and the touchscreen coordinate system based on the at least three positions of the end effector stylus and the at least three positions of the touch points.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: December 28, 2021
    Assignee: ABB Schweiz AG
    Inventors: Hao Gu, Qingwei Li, Jinsong Li, Jihuan Tian, Liwei Qi, Jianjiang Wang
  • Patent number: 10786904
    Abstract: Disclosed are systems and methods to provide a method for calibrating a touchscreen coordinate system of a touchscreen with an industrial robot coordinate system of an industrial robot for industrial robot commissioning and industrial robot system and control system using the same. In one form the systems and methods include attaching an end effector to the industrial robot; (a) moving the industrial robot in a compliant way until a stylus of the end effector touches a point on the touchscreen; (b) recording a position of the stylus of the end effector in the industrial robot coordinate system when it touches the point of the touchscreen; (c) recording a position of the touch point on the touchscreen in the touchscreen coordinate system; and calculating a relation between the industrial robot coordinate system and the touchscreen coordinate system based on the at least three positions of the end effector stylus and the at least three positions of the touch points.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: September 29, 2020
    Assignee: ABB Schweiz AG
    Inventors: Hao Gu, Qingwei Li, Jinsong Li, Jihuan Tian, Liwei Qi, Jianjiang Wang
  • Publication number: 20200164516
    Abstract: A method for controlling a robot includes the steps of: deciding whether there is a non-permanent object in a vicinity of the robot; if there is a non-permanent object, deciding whether the object qualifies for extended protection or not; and defining a safety zone around the object which the robot must not enter or in which a maximum allowed speed of the robot is less than outside the safety zone. The safety zone extends to a greater distance from the object if the object qualifies for extended protection than if it does not.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Inventors: Nicolas Lehment, Andreas Decker, Richard Roberts, Bjoern Matthias, Jihuan Tian
  • Publication number: 20200061837
    Abstract: Disclosed are systems and methods to provide a method for calibrating a touchscreen coordinate system of a touchscreen with an industrial robot coordinate system of an industrial robot for industrial robot commissioning and industrial robot system and control system using the same. In one form the systems and methods include attaching an end effector to the industrial robot; (a) moving the industrial robot in a compliant way until a stylus of the end effector touches a point on the touchscreen, (b) recording a position of the stylus of the end effector in the industrial robot coordinate system when it touches the point of the touchscreen; (c) recording a position of the touch point on the touchscreen in the touchscreen coordinate system; and calculating a relation between the industrial robot coordinate system and the touchscreen coordinate system based on the at least three positions of the end effector stylus and the at least three positions of the touch points.
    Type: Application
    Filed: November 5, 2019
    Publication date: February 27, 2020
    Inventors: Hao Gu, Qingwei Li, Jinsong Li, Jihuan Tian, Liwei Qi, Jianjiang Wang
  • Publication number: 20200019136
    Abstract: The present disclosure relates to a method and apparatus for estimating a systematic error of a commissioning tool of an industrial robot, the industrial robot including an operational tool and an application camera, the commissioning tool including a touchscreen and a stylus, the method including: a driving step of driving the operational tool to rotate around a preset rotation axis; a first image obtaining step of obtaining a plurality of first images of the operational tool during rotation; and a first offset calculating step of calculating a first offset of the stylus relative to the operational tool according to the plurality of first images, so as to obtain the systematic error.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Inventors: Cheng Li, Hao Gu, Jihuan Tian
  • Publication number: 20190049244
    Abstract: An apparatus for detecting tilt of a fixture and method thereof.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 14, 2019
    Inventors: Hao Gu, Jihuan Tian, Cheng Li, Martin Kefer
  • Publication number: 20180126557
    Abstract: Disclosed are systems and methods to provide a method for calibrating a touchscreen coordinate system of a touchscreen with an industrial robot coordinate system of an industrial robot for industrial robot commissioning and industrial robot system and control system using the same. In one form the systems and methods include attaching an end effector to the industrial robot; (a) moving the industrial robot in a compliant way until a stylus of the end effector touches a point on the touchscreen; (b) recording a position of the stylus of the end effector in the industrial robot coordinate system when it touches the point of the touchscreen; (c) recording a position of the touch point on the touchscreen in the touchscreen coordinate system; and calculating a relation between the industrial robot coordinate system and the touchscreen coordinate system based on the at least three positions of the end effector stylus and the at least three positions of the touch points.
    Type: Application
    Filed: September 28, 2017
    Publication date: May 10, 2018
    Inventors: HAO GU, Qingwei Li, Jinsong Li, Jihuan Tian, Liwei Qi, Jianjiang Wang