Patents by Inventor Shaohang Cui

Shaohang Cui 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: 20250102594
    Abstract: This invention presents a method for detecting circuit anomalies in a current transformer. The method is executed by a module integrated into an intelligent electronic device. The process involves a multi-step analysis that starts with comparing the frequency of a detected current signal from the transformer's secondary winding with the frequency of a detected voltage signal from a primary conductor. If the frequency difference exceeds a predetermined threshold, the method advances to assess the magnitude of the detected current signal. If this magnitude falls below another predetermined threshold, the method proceeds to analyze the Total Harmonic Distortion (THD) of the current signal. Depending on whether the THD is above or below a set threshold, the method determines the presence of either an open or a short circuit within the current transformer. This approach provides a reliable and accurate means for identifying circuit anomalies, enhancing the safety of electrical systems.
    Type: Application
    Filed: September 25, 2023
    Publication date: March 27, 2025
    Applicant: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Yufan Wang, Ketao Li, Liang Wang
  • Publication number: 20250085313
    Abstract: The present invention relates to an electricity meter assembly including a sensor module to connect to an electrical system, a meter, and a removable expansion module. The sensor module receives voltage and current signals, generating corresponding measurement signals. The meter's measurement module processes these signals, generating energy consumption data and determining short and open circuit conditions. The removable expansion module, guided by the meter, produces a detection current of a specific frequency, distinct from the electrical system's signals. Also disclosed is a specific configuration of the removable expansion module, designed to attach to a power meter, with components for control, generation, and transmission of specific AC signals.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 13, 2025
    Applicant: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Yufan Wang, Ketao Li, Liang Wang
  • Patent number: 12238873
    Abstract: An intelligent electronic device that can be optionally connected to a DIN rail or a display module without requiring the use of tools. An intelligent electronic device for measuring a characteristic of electricity is provided, which is enclosed in a housing that has a front and a rear. The housing defines an interior volume and includes a sensor configured to sense a characteristic of electricity. The rear of the housing includes a first protuberance structure disposed on a first outer surface. The first protuberance structure contains elongate protrusions and at least one hexagonal protrusion on a second outer surface. The elongate protrusions include upper protrusions and lower protrusions. The lower protrusions include left protrusions and right protrusions, and the at least one hexagonal protrusion is disposed between the left protrusions and right protrusions.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: February 25, 2025
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Yufan Wang, Shaohang Cui, Ketao Li, Yan Ding, Liang Wang
  • Publication number: 20240418763
    Abstract: A system for determining the location of a disturbance event in a power system. The system includes a power feed bus for supplying electrical signal and an Intelligent Electronic Device coupled to the power feed bus. The Intelligent Electronic Device determines the single-phase direction of the disturbance event according to the changes between the average pre-event power, average pre-event current and average pre-event voltage and the average post-event power, average post-event current and average post-event voltage.
    Type: Application
    Filed: June 19, 2023
    Publication date: December 19, 2024
    Applicant: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Haoliang Deng, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20240416793
    Abstract: Provided is a DC meter for an electrical vehicle station. Specifically, the DC meter includes a first current input; a second current input; a voltage input; at least one analog-to-digital converter coupled to the first current input, the second current input and the voltage input, and configured for converting analog signal output from the current inputs and voltage input to digital data; at least one processing module coupled the at least one analog-to-digital converter, the at least one processing module is configured to: calculate the first current parameter through the first current input; calculate the second current parameter through the second current input; calculate the voltage parameter from the voltage input; compute a first energy consumption according to the first current parameter and the voltage parameter; compute a second energy consumption according to the second current parameter and the voltage parameter.
    Type: Application
    Filed: June 19, 2023
    Publication date: December 19, 2024
    Applicant: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20240402228
    Abstract: Provided are a method and apparatus for generating an electrical parameter identifier in an Intelligent Electronic Device (IED). Specifically, the method includes obtaining attributes of the electrical parameter and generating an identifier for the electrical parameter according to the attributes.
    Type: Application
    Filed: June 4, 2024
    Publication date: December 5, 2024
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Patent number: 12155396
    Abstract: An Intelligent Electronic Device (IED) for measuring a zero-crossing based electrical parameter when there is power quality disturbance in the power supply network. More specifically, the IED includes at least one sensor configured for sensing at least one electrical parameter of electrical power distributed from an electrical distribution system to a load, at least one analog-to-digital converter coupled to the at least one sensor and configured for converting an analog signal output from the at least one sensor to digital data, at least one processing module coupled to the at least one analog-to-digital converter, the at least one processing module is configured to receive the digital data, determine that the IED enters loss of synchronization according to the received digital data, measure a zero-crossing based electrical parameter of the digital data according to the cycle of the digital signal immediately before loss of synchronization.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: November 26, 2024
    Assignee: Accuenergy (Canada), Inc
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Patent number: 12061219
    Abstract: Provided are a method and apparatus for system self-recovery. Specifically, a power meter employs a method in which a processor monitors the status of threads running in the power meter. The threads include at least one critical thread for measuring electricity usage at a metering point and at least one noncritical thread for other auxiliary functions. The Power meter can reboot if the status received from the threads indicates that a critical thread among the at least one critical thread works abnormally, and can restart the noncritical thread if the status received from the threads indicates that a noncritical thread among the at least one noncritical thread works abnormally.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: August 13, 2024
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Patent number: 12038461
    Abstract: A method and apparatus generate an energy pulse output while improving the accuracy of energy pulse output. Specifically, an Intelligent Electronic Device employs a method in which a processor receives digital electrical parameter data to at least two buffers alternately; compute a power value in a full zero-crossing cycle in accordance with the digital electrical parameter data when one of the at least two buffers gets fully filled and storing the power value; divide a period that each buffer takes from empty to getting fully filled into a series of intervals; calculate energy consumption in each interval based on the power value stored; totalize the energy consumption; generate an energy pulse output according to a pre-determined threshold and the totalized energy consumption.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: July 16, 2024
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Ketao Li, Haoliang Deng, Yufan Wang, Liang Wang
  • Publication number: 20240187010
    Abstract: An Intelligent Electronic Device (IED) for measuring a zero-crossing based electrical parameter when there is power quality disturbance in the power supply network. More specifically, the IED includes at least one sensor configured for sensing at least one electrical parameter of electrical power distributed from an electrical distribution system to a load, at least one analog-to-digital converter coupled to the at least one sensor and configured for converting an analog signal output from the at least one sensor to digital data, at least one processing module coupled to the at least one analog-to-digital converter, the at least one processing module is configured to receive the digital data, determine that the IED enters loss of synchronization according to the received digital data, measure a zero-crossing based electrical parameter of the digital data according to the cycle of the digital signal immediately before loss of synchronization.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 6, 2024
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20240183889
    Abstract: Provided are a method and apparatus for generating an electrical parameter identifier in an Intelligent Electronic Device (IED). Specifically, the method includes obtaining attributes of the electrical parameter and generating an identifier for the electrical parameter according to the attributes.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 6, 2024
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20240183888
    Abstract: Provided are a method and apparatus for communication between a CPU and a Digital Signal Processor (DSP) in an Intelligent Electronic Device (IED). Specifically, the IED includes at least one analog-to-digital converter coupled to at least one sensor and configured for converting an analog signal output from the at least one sensor to digital data; a DSP coupled to the at least one analog-to-digital converter, and configured to perform digital signal processing on the signal from the at least one analog-to-digital converter; a CPU coupled to the DSP via a hardware path; wherein the DSP and the CPU are configured to communicate using a transmission protocol including a data header and a data payload based on the hardware path; wherein the data header includes a field of command identification indicating a specific communication purpose and a field of command type indicating the communication direction and frequency.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 6, 2024
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Patent number: 12000875
    Abstract: Provided are a method and apparatus for generating an electrical parameter identifier in an Intelligent Electronic Device (IED). Specifically, the method includes obtaining attributes of the electrical parameter and generating an identifier for the electrical parameter according to the attributes.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: June 4, 2024
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20230403834
    Abstract: Provided in the embodiments are an electromagnetic interference suppression circuit and an intelligent electronic device. The electromagnetic interference suppression circuit comprises at least one ferrite bead located at the input port of the circuit, a transient voltage suppression diode, wherein either terminal of the transient voltage suppression diode is connected with the at least one ferrite bead, a resistor network connected with the transient voltage suppression diode, and an optocoupler with an alternating current input response coupled to resistor network.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 14, 2023
    Inventors: Ketao Li, Shaohang Cui, Yan Ding, Yufan Wang, Liang Wang
  • Publication number: 20230401481
    Abstract: Provided are a method and apparatus to measure line frequency. Specifically, an Intelligent Electronic Device employs a method in which a processor receives a training dataset including an input variable set and a corresponding zero-crossing position output variable, obtains a hypothesis function based on the training dataset, estimates zero-crossing positions using the hypothesis function and computes a fundamental frequency of the signal based on the estimated zero-crossing positions.
    Type: Application
    Filed: June 9, 2022
    Publication date: December 14, 2023
    Inventors: Shaohang Cui, Ketao Li, Haoliang Deng, Yufan Wang, Liang Wang
  • Publication number: 20230403800
    Abstract: An intelligent electronic device that can be optionally connected to a DIN rail or a display module without requiring the use of tools. An intelligent electronic device for measuring a characteristic of electricity is provided, which is enclosed in a housing that has a front and a rear. The housing defines an interior volume and includes a sensor configured to sense a characteristic of electricity. The rear of the housing includes a first protuberance structure disposed on a first outer surface. The first protuberance structure contains elongate protrusions and at least one hexagonal protrusion on a second outer surface. The elongate protrusions include upper protrusions and lower protrusions. The lower protrusions include left protrusions and right protrusions, and the at least one hexagonal protrusion is disposed between the left protrusions and right protrusions.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 14, 2023
    Inventors: Yufan Wang, Shaohang Cui, Ketao Li, Yan Ding, Liang Wang
  • Publication number: 20230400484
    Abstract: A method and apparatus generate an energy pulse output while improving the accuracy of energy pulse output. Specifically, an Intelligent Electronic Device employs a method in which a processor receives digital electrical parameter data to at least two buffers alternately; compute a power value in a full zero-crossing cycle in accordance with the digital electrical parameter data when one of the at least two buffers gets fully filled and storing the power value; divide a period that each buffer takes from empty to getting fully filled into a series of intervals; calculate energy consumption in each interval based on the power value stored; totalize the energy consumption; generate an energy pulse output according to a pre-determined threshold and the totalized energy consumption.
    Type: Application
    Filed: June 9, 2022
    Publication date: December 14, 2023
    Inventors: Shaohang CUI, Ketao LI, Haoliang DENG, Yufan WANG, Liang WANG
  • Publication number: 20230400485
    Abstract: Provided are a method and apparatus for system self-recovery. Specifically, a power meter employs a method in which a processor monitors the status of threads running in the power meter. The threads include at least one critical thread for measuring electricity usage at a metering point and at least one noncritical thread for other auxiliary functions. The Power meter can reboot if the status received from the threads indicates that a critical thread among the at least one critical thread works abnormally, and can restart the noncritical thread if the status received from the threads indicates that a noncritical thread among the at least one noncritical thread works abnormally.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 14, 2023
    Inventors: Shaohang Cui, Ketao Li, Yufan Wang, Liang Wang
  • Publication number: 20230142822
    Abstract: A method and apparatus measures flicker while improving the computational performance for measuring flicker severity level. Specifically, an Intelligent Electronic Device employs a method in which a processor summarizes and characterizes a plurality of instantaneous flicker sensation level values as histogram formatted data and selects a specific percentile of the instantaneous flicker sensation level values from the histogram formatted data. The method employed by the device uses the specific percentile to calculate a short-term flicker severity level value.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 11, 2023
    Inventors: Ketao Li, Guanghao Yu, Junhui Wang, Haoliang Deng, Linxuan Chen, Xiao Wu, Kehao Si, Wenbing Tan, Yan Ding, Changcheng Hao, Alex Yeh, Liang Wang, Liwei Wang, Tao Xu, Shiheng Deng, Shaohang Cui, Youwei Zhang, Yufan Wang, Zihao Chen
  • Patent number: D1028765
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: May 28, 2024
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Yufan Wang, Shaohang Cui, Ketao Li, Yan Ding, Liang Wang