Patents by Inventor Sang Bok Won

Sang Bok Won 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: 11307292
    Abstract: Disclosed are an occupancy distance map (ODM) information reliability determination system and method and a vehicle using the same. The system includes a signal conversion unit configured to receive a plurality of sensing signals and to perform signal processing, a calculation unit configured to calculate state information of a nearby vehicle detected from processed signals, a sensor fusion track output unit configured to output sensor fusion track information based on the calculated state information of the nearby vehicle, an ODM output unit configured to output ODM information based on the calculated state information of the nearby vehicle, an ODM fusion unit configured to generate sensor fusion ODM information by performing sensor fusion with respect to the ODM information, and an ODM information reliability determination unit configured to determine reliability of the sensor fusion ODM information by confirming association between the sensor fusion track information and the sensor fusion ODM information.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 19, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Su Min Jo, Ji Eun Won, Sang Bok Won, Min Kyun Yoo, Jae Pil Hwang, Woo Young Lee, Uk Il Yang, Hoon Lee, Seul Ki Han, Bo Young Yun, Hyok Jin Chong, Hyung Sun Jang
  • Patent number: 11287525
    Abstract: An apparatus and method for identifying a short cut-in vehicle, and a vehicle using the same are disclosed. The apparatus includes a signal conversion unit configured to receive and signal-process a plurality of sensing signals, a computation unit configured to compute state information of a surrounding vehicle detected from the signal-processed signal, a sensor fusion track output unit configured to output a sensor fusion track based on the computed state information of the surrounding vehicle, an occupancy distance map (ODM) output unit configured to output ODM information including a grid map corresponding to a vehicle detection region and an ODM object including a plurality of detection points based on the computed state information of the surrounding vehicle, and a cut-in vehicle identification unit configured to identify a cut-in vehicle based on the output sensor fusion track and ODM information.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: March 29, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, APTIV KOREA LLC
    Inventors: Hoon Lee, Ji Eun Won, Dong Gu Lee, Sang Bok Won, Min Kyun Yoo, Jae Pil Hwang, Hyung Sun Jang, Uk Il Yang, Hyok Jin Chong, Kyoung Jun Lee, Woo Young Lee, Seul Ki Han, Bo Young Yun, Su Min Jo, Seung Joon Lee, Byung Gi Hong, Soo Bin Jeon, Min Ho Park, Gi Hyun Seo, Kyu Ho Park, Jun Kwon Jee
  • Patent number: 10971746
    Abstract: A fuel cell system for modulating an offset of a hydrogen pressure sensor is provided. The fuel cell system includes a stack with a plurality of cells and each cells includes a first electrode to which hydrogen is supplied, a second electrode to which oxygen is supplied, and a membrane electrode assembly arranged between the first and second electrodes to produce electricity by reaction between the hydrogen and the oxygen. The hydrogen pressure sensor is connected to each cell to sense a pressure of the hydrogen supplied to the first electrode. A controller that which of the cells is supplied with insufficient pressure of hydrogen and modulates the offset of the hydrogen pressure sensor connected to the cell to which the hydrogen is supplied with insufficient pressure, to then supply the hydrogen to the first electrode at an appropriate pressure.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: April 6, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Pin Jin, Sang Bok Won, Hyung Kook Kim, Ki Chang Kim
  • Patent number: 10964962
    Abstract: A method for diagnosing a water-containing state of a fuel cell stack includes steps of: applying an alternating current (AC) signal having a predetermined frequency to the fuel cell stack to calculate each of an electrolyte membrane impedance, an anode impedance, and a cathode impedance from an output voltage and an output current of the fuel cell stack corresponding to the AC signal; and diagnosing the water-containing state of the fuel cell stack on the basis of the electrolyte membrane impedance, the anode impedance, and the cathode impedance.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 30, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Bok Won, Ki Chang Kim, Sung Ho Yang, Young Pin Jin
  • Patent number: 10777830
    Abstract: An apparatus for diagnosing a fuel cell and a vehicle system includes a measuring device that measures a stack voltage and a stack current from a fuel cell stack, and at least one processor that extracts a plurality of reference current points and a plurality of reference voltage points corresponding to the reference current points by analyzing the measured stack voltage and the measured stack current, calculates an abnormality degree of the fuel cell stack based on a reference signal waveform formed by using voltage differences between the reference voltage points, and determines an abnormal state of the fuel cell stack based on the calculated abnormality degree of the fuel cell stack.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: September 15, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sang Bok Won, Young Pin Jin, Kwi Seong Jeong, Gi Young Nam
  • Publication number: 20200191907
    Abstract: Disclosed are an occupancy distance map (ODM) information reliability determination system and method and a vehicle using the same. The system includes a signal conversion unit configured to receive a plurality of sensing signals and to perform signal processing, a calculation unit configured to calculate state information of a nearby vehicle detected from processed signals, a sensor fusion track output unit configured to output sensor fusion track information based on the calculated state information of the nearby vehicle, an ODM output unit configured to output ODM information based on the calculated state information of the nearby vehicle, an ODM fusion unit configured to generate sensor fusion ODM information by performing sensor fusion with respect to the ODM information, and an ODM information reliability determination unit configured to determine reliability of the sensor fusion ODM information by confirming association between the sensor fusion track information and the sensor fusion ODM information.
    Type: Application
    Filed: September 26, 2019
    Publication date: June 18, 2020
    Inventors: Su Min Jo, Ji Eun Won, Sang Bok Won, Min Kyun Yoo, Jae Pil Hwang, Woo Young Lee, Uk Il Yang, Hoon Lee, Seul Ki Han, Bo Young Yun, Hyok Jin Chong, Hyung Sun Jang
  • Publication number: 20200183003
    Abstract: An apparatus and method for identifying a short cut-in vehicle, and a vehicle using the same are disclosed. The apparatus includes a signal conversion unit configured to receive and signal-process a plurality of sensing signals, a computation unit configured to compute state information of a surrounding vehicle detected from the signal-processed signal, a sensor fusion track output unit configured to output a sensor fusion track based on the computed state information of the surrounding vehicle, an occupancy distance map (ODM) output unit configured to output ODM information including a grid map corresponding to a vehicle detection region and an ODM object including a plurality of detection points based on the computed state information of the surrounding vehicle, and a cut-in vehicle identification unit configured to identify a cut-in vehicle based on the output sensor fusion track and ODM information.
    Type: Application
    Filed: November 4, 2019
    Publication date: June 11, 2020
    Inventors: Hoon Lee, Ji Eun Won, Dong Gu Lee, Sang Bok Won, Min Kyun Yoo, Jae Pil Hwang, Hyung Sun Jang, Uk Il Yang, Hyok Jin Chong, Kyoung Jun Lee, Woo Young Lee, Seul Ki Han, Bo Young Yun, Su Min Jo, Seung Joon Lee, Byung Gi Hong, Soo Bin Jeon, Min Ho Park, Gi Hyun Seo, Kyu Ho Park, Jun Kwon Jee
  • Publication number: 20200174113
    Abstract: The present disclosure relates to an omnidirectional sensor fusion system and method and a vehicle including the same. The omnidirectional sensor fusion system includes a sensor track processing unit configured to receive recognition information from one or more sensors to generate a sensor track, a sensor track association determination unit configured to determine, based on the generated sensor track being located at an overlapping point of sensing regions of the one or more sensors, an association between a previous sensor fusion track and the sensor track, the sensor track association determination unit further configured to change sensor track information in response to the determined association and output a sensor fusion track, a sensor fusion track tracing unit configured to trace the output sensor fusion track, and a sensor fusion track maintenance unit configured to maintain the traced sensor fusion track.
    Type: Application
    Filed: July 16, 2019
    Publication date: June 4, 2020
    Inventors: Hoon LEE, Sang Bok WON, Hyung Sun JANG, Bo Young YUN, Seul Ki HAN, Ji Eun WON, Uk IL YANG
  • Publication number: 20190393524
    Abstract: A fuel cell system for modulating an offset of a hydrogen pressure sensor is provided. The fuel cell system includes a stack with a plurality of cells and each cells includes a first electrode to which hydrogen is supplied, a second electrode to which oxygen is supplied, and a membrane electrode assembly arranged between the first and second electrodes to produce electricity by reaction between the hydrogen and the oxygen. The hydrogen pressure sensor is connected to each cell to sense a pressure of the hydrogen supplied to the first electrode. A controller that which of the cells is supplied with insufficient pressure of hydrogen and modulates the offset of the hydrogen pressure sensor connected to the cell to which the hydrogen is supplied with insufficient pressure, to then supply the hydrogen to the first electrode at an appropriate pressure.
    Type: Application
    Filed: October 4, 2018
    Publication date: December 26, 2019
    Inventors: Young Pin Jin, Sang Bok Won, Hyung Kook Kim, Ki Chang Kim
  • Publication number: 20190131638
    Abstract: A method for diagnosing a water-containing state of a fuel cell stack includes steps of: applying an alternating current (AC) signal having a predetermined frequency to the fuel cell stack to calculate each of an electrolyte membrane impedance, an anode impedance, and a cathode impedance from an output voltage and an output current of the fuel cell stack corresponding to the AC signal; and diagnosing the water-containing state of the fuel cell stack on the basis of the electrolyte membrane impedance, the anode impedance, and the cathode impedance.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 2, 2019
    Inventors: Sang Bok Won, Ki Chang Kim, Sung Ho Yang, Young Pin Jin
  • Patent number: 10249895
    Abstract: An apparatus includes a stack voltage monitor that measures a voltage of each channel of a plurality of channels of a fuel cell stack. Each of the channel of the plurality of channels includes a predetermined number of unit cells. The stack voltage monitor calculates impedance of each of the channel from the measured voltage. The apparatus further includes a controller that diagnoses a state of the fuel cell stack based on the impedance of each of the channel.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 2, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sang Bok Won, Young Bum Kum, Kwi Seong Jeong
  • Publication number: 20180351185
    Abstract: Disclosed is a method of controlling operation of a fuel cell system comprising a fuel cell stack provided with a reversal tolerance anode (RTA), in which a reaction state in the fuel cell stack is diagnosed based on cell voltage behavior of the fuel cell stack, and operation according to the diagnosed reaction state is executed upon a cold start of the fuel cell stack, so as to prevent damage to the fuel cell stack and degradation of performance of the fuel cell stack.
    Type: Application
    Filed: November 6, 2017
    Publication date: December 6, 2018
    Inventors: Ju Han KIM, Sang Bok WON, Kwi Seong JEONG
  • Patent number: 10106051
    Abstract: An apparatus for diagnosing a state of a fuel cell stack is provided. The apparatus may diagnose the state of the fuel cell stack without including the DC-DC converter which boosts the DC voltage and the inverter which converts the boosted DC voltage into the AC voltage. In particular, the apparatus may diagnose the state of the fuel cell by applying the rectangular wave of the single frequency having a duty ration of about 0.5 to the fuel cell stack, measuring the voltage of the fuel cell stack, detecting the even multiple harmonic component of the frequency of the rectangular wave by performing the frequency conversion on the measured voltage, and then diagnosing the state of the fuel cell stack based on the magnitude of the detected harmonic component.
    Type: Grant
    Filed: December 7, 2014
    Date of Patent: October 23, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kwi Seong Jeong, Sang Bok Won, Young Bum Kum, Jae Jun Ko
  • Publication number: 20180287174
    Abstract: An apparatus for diagnosing a fuel cell and a vehicle system includes a measuring device that measures a stack voltage and a stack current from a fuel cell stack, and at least one processor that extracts a plurality of reference current points and a plurality of reference voltage points corresponding to the reference current points by analyzing the measured stack voltage and the measured stack current, calculates an abnormality degree of the fuel cell stack based on a reference signal waveform formed by using voltage differences between the reference voltage points, and determines an abnormal state of the fuel cell stack based on the calculated abnormality degree of the fuel cell stack.
    Type: Application
    Filed: November 16, 2017
    Publication date: October 4, 2018
    Inventors: Sang Bok WON, Young Pin JIN, Kwi Seong JEONG, Gi Young NAM
  • Publication number: 20180108925
    Abstract: An apparatus includes a stack voltage monitor that measures a voltage of each channel of a plurality of channels of a fuel cell stack. Each of the channel of the plurality of channels includes a predetermined number of unit cells. The stack voltage monitor calculates impedance of each of the channel from the measured voltage. The apparatus further includes a controller that diagnoses a state of the fuel cell stack based on the impedance of each of the channel.
    Type: Application
    Filed: December 8, 2016
    Publication date: April 19, 2018
    Inventors: Sang Bok Won, Young Bum Kum, Kwi Seong Jeong
  • Patent number: 9929418
    Abstract: A system and method for diagnosing the state of a fuel cell stack are provided. The method includes simultaneously applying currents having respective first and second frequencies to a fuel cell stack and computing Fourier transforms of output currents and voltages from the fuel cell stack based on the applied currents. A real part of a first frequency impedance and an imaginary part of a second frequency impedance are calculated using amplitudes and phases of currents and voltages having the first frequency and the second frequency among the computed output currents and voltages. Further, a state of the fuel cell stack is determined by magnitude of the calculated real part of the first frequency impedance and by magnitude of the calculated imaginary part of the second frequency impedance.
    Type: Grant
    Filed: November 30, 2014
    Date of Patent: March 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Kwi Seong Jeong, Haeng Jin Ko, Young Bum Kum, Sang Bok Won
  • Patent number: 9634341
    Abstract: An apparatus and method for diagnosing a fuel cell diagnoses a state of a fuel cell by estimating a fuel-cell equivalent circuit. The apparatus for diagnosing a fuel cell includes: an impedance measurement unit configured to measure impedance of a fuel cell within a predetermined frequency range; an equivalent circuit model unit configured to derive each parameter value by estimating a predetermined fuel-cell equivalent circuit model in response to the impedance received from the impedance measurement unit; and a fuel-cell-state diagnosis unit configured to diagnose a state of the fuel cell by detecting a variation of the parameter value derived from the equivalent circuit model unit.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 25, 2017
    Assignee: Hyundai Motor Company
    Inventors: Sang Bok Won, Kwi Seong Jeong
  • Patent number: 9575136
    Abstract: An apparatus and method for measuring impedance of a fuel cell stack capable of accurately measuring the impedance even when a DC current of the fuel cell stack is changed depending on fluctuation of a load, by compensating for an AC voltage (or AC current) used to measure the impedance of the fuel cell stack based on a DC current of the fuel cell stack.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: February 21, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sang Bok Won, Kwi Seong Jeong
  • Patent number: 9494655
    Abstract: Disclosed are an apparatus and a method for diagnosing a state of a fuel cell stack with high accuracy by reducing the deviation of a harmonic component although the voltage variation of the fuel cell stack is substantial. According to the present invention, a harmonic component is detected by converting the difference between the voltage of the fuel cell stack and a moving average voltage to a frequency and the state of the fuel cell stack is diagnosed based on the size of the detected harmonic component.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 15, 2016
    Assignee: Hyundai Motor Company
    Inventors: Kwi Seong Jeong, Sang Bok Won, Young Bum Kum, Jae Jun Ko
  • Publication number: 20160149240
    Abstract: An apparatus and method for diagnosing a fuel cell diagnoses a state of a fuel cell by estimating a fuel-cell equivalent circuit. The apparatus for diagnosing a fuel cell includes: an impedance measurement unit configured to measure impedance of a fuel cell within a predetermined frequency range; an equivalent circuit model unit configured to derive each parameter value by estimating a predetermined fuel-cell equivalent circuit model in response to the impedance received from the impedance measurement unit; and a fuel-cell-state diagnosis unit configured to diagnose a state of the fuel cell by detecting a variation of the parameter value derived from the equivalent circuit model unit.
    Type: Application
    Filed: April 14, 2015
    Publication date: May 26, 2016
    Inventors: Sang Bok WON, Kwi Seong JEONG