Patents by Inventor Feng Cao

Feng Cao 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: 11327504
    Abstract: A method of mobile automation apparatus localization in a navigation controller includes: controlling a depth sensor to capture a plurality of depth measurements corresponding to an area containing a navigational structure; selecting a primary subset of the depth measurements; selecting, from the primary subset, a corner candidate subset of the depth measurements; generating, from the corner candidate subset, a corner edge corresponding to the navigational structure; selecting an aisle subset of the depth measurements from the primary subset, according to the corner edge; selecting, from the aisle subset, a local minimum depth measurement for each of a plurality of sampling planes extending from the depth sensor; generating a shelf plane from the local minimum depth measurements; and updating a localization of the mobile automation apparatus based on the corner edge and the shelf plane.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: May 10, 2022
    Assignee: Symbol Technologies, LLC
    Inventors: Feng Cao, Harsoveet Singh, Richard Jeffrey Rzeszutek, Jingxing Qian, Jonathan Kelly
  • Publication number: 20220113421
    Abstract: Techniques are disclosed for mapping in a movable object environment. A system may comprise a movable object, a payload coupled to the movable object, the payload comprising an embedded system including an embedded processor, a scanning sensor, one or more cameras, and an inertial navigation system (INS). The payload further including an online processing application, the online processing application including instructions which, when executed by the embedded processor, cause the online processing application to obtain mapping data from the scanning sensor, obtain image data from a camera of the one or more cameras, obtain positioning data from the INS, associate the mapping data with the positioning data to generate georeferenced data, downsample the georeferenced data to generate downsampled georeferenced data, and provide the downsampled georeferenced data to a client device to be visualized on the client device in real-time.
    Type: Application
    Filed: June 4, 2021
    Publication date: April 14, 2022
    Inventors: Jifei XU, Feng CAO, Arjun Sukumar MENON, Weifeng LIU
  • Patent number: 11268328
    Abstract: A double-walled drill pipe includes an outer drill pipe, an inner drill pipe and a drill pipe sealing apparatus. The outer drill pipe includes an axial through hole and a wall surface through hole, and the wall surface through hole is disposed in a wall surface of the outer drill pipe to connect the outside of the double-walled drill pipe and the axial through hole. The inner drill pipe is rotatably disposed in the axial through hole, and includes a fluid guiding hole connected to the wall surface through hole. The drill pipe sealing apparatus is disposed between the outer drill pipe and the inner drill pipe. The drill pipe sealing apparatus is axially located between a driving end and a connecting port of the wall surface through hole connected to the axial through hole. A drilling machine including the double-walled drill pipe is also provided.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: March 8, 2022
    Assignee: XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Ming Yang, Weixiang Lv, Lihua Han, Ming Li, Tao Ma, Feng Cao, Kuankuan Li
  • Patent number: 11255579
    Abstract: A control method of a transcritical carbon dioxide composite heat pump system is disclosed, wherein the transcritical carbon dioxide composite heat pump system includes: a CO2 main circuit compressor, an air-cooling-air-cooling recombiner, a supercooling-evaporation recombiner, an evaporator and a CO2 auxiliary compressor; wherein the air-cooling-air-cooling recombiner comprises a CO2 main circuit, a CO2 auxiliary circuit and a water circuit; the supercooling-evaporation recombiner comprises a CO2 main circuit supercooling section and a CO2 auxiliary circuit evaporation section. The present invention includes two working modes according to the return water temperature, so that the unit has a wider application range and meets daily needs. There is only one heat exchanger for refrigerant and water. Compared with the three water and refrigerant heat exchangers in the conventional transcritical CO2 composite heat pump, the circulating water circuit is a single circuit with one inlet and one outlet.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: February 22, 2022
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Feng Cao, Jing Wang, Xiang Yin, Mingjia Li
  • Patent number: 11200677
    Abstract: A method of detecting an edge of a support surface in an imaging controller includes: obtaining image data captured by an image sensor and a plurality of depth measurements captured by a depth sensor, the image data and the plurality of depth measurements corresponding to an area containing the support surface; detecting preliminary edges in the image data; applying a Hough transform to the preliminary edges to determine Hough lines representing candidate edges of the support surface; segmenting the plurality of depth measurements to assign classes to each pixel, each class defined by one of a plurality of seed pixels, wherein the plurality of seed pixels are identified from the depth measurements based on the Hough lines; and detecting the edge of the support surface by selecting a class of pixels and applying a line-fitting model to the selected class to obtain an estimated edge of the support surface.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: December 14, 2021
    Assignee: Zebra Technologies Corporation
    Inventors: Tze Fung Christopher Chan, Feng Cao, Mehdi Mazaheri Tehrani, Mahyar Vajedi
  • Patent number: 11151743
    Abstract: A method of detecting an end of an aisle of shelf modules in an imaging controller of a mobile automation apparatus, includes: obtaining image data captured by an image sensor and a plurality of depth measurements captured by a depth sensor, the image data and the depth measurements corresponding to an area containing a portion of the aisle of shelf modules; obtaining locomotive data of the apparatus; generating a dynamic trust region based on the locomotive data; detecting an edge segment based on the image data and the plurality of depth measurements, the edge segment representing an edge of a support surface; and when the edge segment is located at least partially in the dynamic trust region, updating an estimated end of the aisle based on the detected edge segment.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 19, 2021
    Assignee: Zebra Technologies Corporation
    Inventors: Tze Fung Christopher Chan, Feng Cao, Mehdi Mazaheri Tehrani, Mahyar Vajedi
  • Publication number: 20210310315
    Abstract: A double-walled drill pipe includes an outer drill pipe, an inner drill pipe and a drill pipe sealing apparatus. The outer drill pipe includes an axial through hole and a wall surface through hole, and the wall surface through hole is disposed in a wall surface of the outer drill pipe to connect the outside of the double-walled drill pipe and the axial through hole. The inner drill pipe is rotatably disposed in the axial through hole, and includes a fluid guiding hole connected to the wall surface through hole. The drill pipe sealing apparatus is disposed between the outer drill pipe and the inner drill pipe. The drill pipe sealing apparatus is axially located between a driving end and a connecting port of the wall surface through hole connected to the axial through hole. A drilling machine including the double-walled drill pipe is also provided.
    Type: Application
    Filed: July 25, 2019
    Publication date: October 7, 2021
    Applicant: XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Ming YANG, Weixiang LV, Lihua HAN, Ming LI, Tao MA, Feng CAO, Kuankuan LI
  • Patent number: 11132100
    Abstract: A system includes an analytics collector that receives world state data to provide status relating to a plurality of mission analytics of an unmanned vehicle or an unmanned vehicle mission planner. An asset filter filters the status from the analytics collector with respect to mission analytics of a subset of selected assets. An analytic aggregator collects the filtered status from the asset filter and generates a visual analytics file based on one or more selected analytics for the subset of selected assets. A rendering pipeline processes the visual analytics file from the analytic aggregator and generates a formatted output file describing a visualization of the plurality of mission analytics from the visual analytics file.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: September 28, 2021
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Miteshkumar K. Patel, Louis Oddo, William Parsons, Feng Cao, Henry H. Fung, Devang R. Parekh
  • Patent number: 11078921
    Abstract: A blade, an impeller and a fan are provided. A trailing edge (12) of the blade (1) is provided with at least one concave arc segment (15). At least one end point of the at least one concave arc segment (15) is located between a radial outer edge (13) of the blade (1) and a radial inner edge (14) of the blade (1). The blade (1) is provided with at least one ridge structure protruding from a pressure surface (18) of the blade (1) toward a suction surface (17) of the blade (1). The blade is provided with at least one concave arc segment at a trailing edge thereof on the basis of a bionics principle, and is further provided with a ridge structure, thus improving an airflow pattern at the trailing edge of the blade by means of changing a shape of the blade, and reducing noise accordingly.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 3, 2021
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Feng Cao, Jianhuang Zou, Zhongjie Liu, Binhua Long, Hao Liu
  • 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
  • Patent number: 11055360
    Abstract: Embodiments of the disclosure provide a data write-in method and apparatus. The data write-in method includes: selecting a target replica server from a plurality of replica servers managed by a metadata server according to remaining capacity of the plurality of replica servers; selecting a write-in disk in the target replica server according to remaining capacity and load of disks managed by the target replica server; and storing write-in data into the write-in disk through the target replica server.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: July 6, 2021
    Assignee: Alibaba Group Holding Limited
    Inventors: Chengyu Dong, Jiaji Zhu, Haiyong Zhang, Feng Cao, Yong Wang, Wenhui Yao, Junping Wu, Yang Wu, Yuanyuan Dong, Dongzheng Wu, Jing Lu
  • Publication number: 20210197613
    Abstract: Disclosed is a self-adaptive pencil feeding mechanism, including: a base, a first pencil feeding assembly, and a second pencil feeding assembly. The first pencil feeding assembly and the second pencil feeding assembly are mounted in the base and are capable of moving to the left or to the right, and the base is connected to a guiding member via an elastic member. The guiding member drives the first pencil feeding assembly and the second pencil feeding assembly to synchronously approach each other inwardly, and the first pencil feeding assembly and the second pencil feeding assembly, when a force caused by insertion of a pencil is applied thereto, are driven by a driving member to synchronously expand outwardly. The self-adaptive pencil feeding mechanism is capable of adapting to pencils of different diameters.
    Type: Application
    Filed: June 19, 2020
    Publication date: July 1, 2021
    Inventors: Gaowei Zheng, Feng Cao, Junfeng Zhang, Chongzhi Zheng
  • Publication number: 20210199362
    Abstract: The present disclosures discloses a precooler-based transcritical CO2 heat pump system and a control method of a waterway two-way valve thereof, in which a transcritical CO2 heat pump system is assisted by a precooler system. A circulating waterway is divided into two parts in the system through a three-way diversion valve and a three-way confluence valve and is connected to a waterway bypass valve through a waterway two-way regulating valve. An ambient temperature sensor, an evaporation fin temperature sensor and an evaporation pressure sensor are provided, and a programmable logic controller is used as a core for acquisition, operation and control.
    Type: Application
    Filed: March 10, 2021
    Publication date: July 1, 2021
    Inventors: Feng CAO, Yulong SONG, Xiang YIN, Mingjia LI
  • Publication number: 20210164700
    Abstract: A control method of a transcritical carbon dioxide composite heat pump system is disclosed, wherein the transcritical carbon dioxide composite heat pump system includes: a CO2 main circuit compressor, an air-cooling-air-cooling recombiner, a supercooling-evaporation recombiner, an evaporator and a CO2 auxiliary compressor; wherein the air-cooling-air-cooling recombiner comprises a CO2 main circuit, a CO2 auxiliary circuit and a water circuit; the supercooling-evaporation recombiner comprises a CO2 main circuit supercooling section and a CO2 auxiliary circuit evaporation section. The present invention includes two working modes according to the return water temperature, so that the unit has a wider application range and meets daily needs. There is only one heat exchanger for refrigerant and water. Compared with the three water and refrigerant heat exchangers in the conventional transcritical CO2 composite heat pump, the circulating water circuit is a single circuit with one inlet and one outlet.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 3, 2021
    Inventors: Feng Cao, Jing Wang, Xiang Yin, Mingjia Li
  • Patent number: 11004564
    Abstract: A computer implemented method for processing a plurality of medical indication conditions on a computer that includes a processor communicatively coupled to a memory includes obtaining a plurality of predetermined indication conditions which relate to a plurality of parameters, and forming a plurality of conditional segments based on respective values of the plurality of parameters defined in the plurality of predetermined indication conditions. Each conditional segment of the plurality of conditional segments corresponds to a combination of different value ranges of respective parameters of the plurality of parameters. The plurality of predetermined indication conditions includes a measurement item, a reference standard, a time period, a measurement condition, and a measurement manner.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: May 11, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Feng Cao, Xiang Li, Jing Mei, Yuan Ni, Weijia Shen, Wen Sun
  • Publication number: 20210119965
    Abstract: Embodiments of this application provide an address management method and apparatus, and relate to the communications field. The method includes: assigning, by a DHCP server, an IP address to a client; detecting, within a lease term, whether the client is online; and reclaiming, after detecting that the client is offline, the IP address assigned to the client.
    Type: Application
    Filed: December 24, 2020
    Publication date: April 22, 2021
    Inventors: Jinhua Meng, Feng Cao, Yeyi Ji
  • Publication number: 20200400616
    Abstract: Methods, apparatuses, and systems for detecting internal defects of a protective headgear are provided. An example apparatus may include a protective headgear, an actuator element integrated within the protective headgear, a sensor element integrated within the protective headgear, and a processor element electronically coupled to the actuator element and the sensor element. In some examples, the processor element is configured to cause the actuator element to generate a first ultrasonic wave, wherein the first ultrasonic wave is propagated in the protective headgear, and receive a first output from the sensor element in response to the first ultrasonic wave.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 24, 2020
    Inventors: Lei JIANG, Wei SUN, Junyan XU, Zhixiong HOU, Feng CAO
  • Publication number: 20200380715
    Abstract: A method of detecting an end of an aisle of shelf modules in an imaging controller of a mobile automation apparatus, includes: obtaining image data captured by an image sensor and a plurality of depth measurements captured by a depth sensor, the image data and the depth measurements corresponding to an area containing a portion of the aisle of shelf modules; obtaining locomotive data of the apparatus; generating a dynamic trust region based on the locomotive data; detecting an edge segment based on the image data and the plurality of depth measurements, the edge segment representing an edge of a support surface; and when the edge segment is located at least partially in the dynamic trust region, updating an estimated end of the aisle based on the detected edge segment.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Inventors: Tze Fung Christopher Chan, Feng Cao, Mehdi Mazaheri Tehrani, Mahyar Vajedi
  • Publication number: 20200380694
    Abstract: A method of detecting an edge of a support surface in an imaging controller includes: obtaining image data captured by an image sensor and a plurality of depth measurements captured by a depth sensor, the image data and the plurality of depth measurements corresponding to an area containing the support surface; detecting preliminary edges in the image data; applying a Hough transform to the preliminary edges to determine Hough lines representing candidate edges of the support surface; segmenting the plurality of depth measurements to assign classes to each pixel, each class defined by one of a plurality of seed pixels, wherein the plurality of seed pixels are identified from the depth measurements based on the Hough lines; and detecting the edge of the support surface by selecting a class of pixels and applying a line-fitting model to the selected class to obtain an estimated edge of the support surface.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Inventors: Tze Fung Christopher Chan, Feng Cao, Mehdi Mazaheri Tehrani, Mahyar Vajedi
  • Publication number: 20200379480
    Abstract: A method in a navigational controller includes: controlling a ceiling-facing camera of a mobile automation apparatus to capture a stream of images of a facility ceiling; activating a primary localization mode including: (i) detecting primary features in the captured image stream; and (ii) updating, based on the primary features, an estimated pose of the mobile automation apparatus and a confidence level corresponding to the estimated pose; determining whether the confidence level exceeds a confidence threshold; when the confidence level does not exceed the threshold, switching to a secondary localization mode including: (i) detecting secondary features in the captured image stream; (ii) updating the estimated pose and the confidence level based on the secondary features; and (iii) searching the image stream for the primary features; and responsive to detecting the primary features in the image stream, re-activating the primary localization mode.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Inventors: Mehdi Mazaheri Tehrani, Mahyar Vajedi, Feng Cao, Tze Fung Christopher Chan