Patents by Inventor Liangju Wang

Liangju Wang 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: 20240078879
    Abstract: A system includes a doorbell at an exterior of a premises comprising a doorbell housing, a button, a doorbell wireless transceiver, and a doorbell speaker and doorbell microphone coupled to the doorbell wireless transceiver. The system also includes a smoke detector at an interior of the premises comprising a smoke detector housing, a smoke detector wireless transceiver, and a smoke detector speaker and smoke detector microphone coupled to the smoke detector wireless transceiver. The smoke detector wireless transceiver is configured to be in two-way audio communication with the doorbell wireless transceiver. The two-way audio communication includes transmitting audio from the doorbell microphone to the smoke detector speaker via the wireless transceivers. The two-way audio communication also includes transmitting audio from the smoke detector microphone to the doorbell speaker via the wireless transceivers. In some systems, a second smoke detector is included and in some systems, a control panel is included.
    Type: Application
    Filed: January 20, 2021
    Publication date: March 7, 2024
    Inventors: Liangju LI, Zida WANG, Kun YANG
  • Patent number: 11815788
    Abstract: A method and system are disclosed for providing consistent images of leaves of plants, including articulating a lower case of a housing with respect to an upper case via an imaging chamber articulation mechanism from i) a closed state to ii) an open state, the articulable space forms an imaging chamber which is dark when the imaging chamber articulation mechanism is in the closed state, placing the leaf within the imaging chamber, articulating the imaging chamber articulation mechanism to the closed state, activating one or more light sources, actuating a linear actuator to thereby linearly move a camera from i) an initial position to ii) an end position, obtaining images from the camera, re-actuating the linear actuator to thereby linearly move the camera from the end position to the initial position, re-articulating the lower case to the open state, and removing the leaf.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: November 14, 2023
    Assignee: Purdue Research Foundation
    Inventors: Jian Jin, Liangju Wang, Jialei Wang, Yikai Li
  • Publication number: 20220357634
    Abstract: A method and system are disclosed for providing consistent images of leaves of plants, including articulating a lower case of a housing with respect to an upper case via an imaging chamber articulation mechanism from i) a closed state to ii) an open state, the articulable space forms an imaging chamber which is dark when the imaging chamber articulation mechanism is in the closed state, placing the leaf within the imaging chamber, articulating the imaging chamber articulation mechanism to the closed state, activating one or more light sources, actuating a linear actuator to thereby linearly move a camera from i) an initial position to ii) an end position, obtaining images from the camera, re-actuating the linear actuator to thereby linearly move the camera from the end position to the initial position, re-articulating the lower case to the open state, and removing the leaf.
    Type: Application
    Filed: May 4, 2022
    Publication date: November 10, 2022
    Applicant: Purdue Research Foundation
    Inventors: Jian Jin, Liangju Wang, Jialei Wang, Yikai Li
  • Patent number: 11481958
    Abstract: A root imaging system is disclosed which includes a robotic arm, a camera coupled to the robotic arm, the robotic arm configured to insert the camera into the soil at predefined coordinates, a processor system configured to receive user-defined data about a plant of interest, define insertion points about the plant of interest based on the user-defined data, control the robotic arm to thereby insert the camera into the soil at defined insertion points, obtain images from the camera positioned at the insertion points, analyze the images for presence of roots, and identify the images having roots and combine that with image 3D location information for 3D structure reconstruction of the entire root structure.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: October 25, 2022
    Assignee: Purdue Research Foundation
    Inventors: Jian Jin, Wei Qiu, Zhihang Song, Liangju Wang
  • Publication number: 20210005011
    Abstract: A root imaging system is disclosed which includes a robotic arm, a camera coupled to the robotic arm, the robotic arm configured to insert the camera into the soil at predefined coordinates, a processor system configured to receive user-defined data about a plant of interest, define insertion points about the plant of interest based on the user-defined data, control the robotic arm to thereby insert the camera into the soil at defined insertion points, obtain images from the camera positioned at the insertion points, analyze the images for presence of roots, and identify the images having roots and combine that with image 3D location information for 3D structure reconstruction of the entire root structure.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 7, 2021
    Applicant: Purdue Research Foundation
    Inventors: Jian Jin, Wei Qiu, Zhihang Song, Liangju Wang