Patents by Inventor Yong-June Shin
Yong-June Shin 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).
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Patent number: 11762007Abstract: Disclosed is a multi-core cable fault classification system which includes a reference signal measurement unit configured to measure a core-specific reference signal generated by applying an electromagnetic signal to a multi-core cable having at least two cores, a reflected-signal measurement unit configured to measure a core-specific reflected signal generated by reflecting the generated core-specific reference signal at a point of the multi-core cable, a data processing unit configured to extract, from time-series data for the measured core-specific reflected signal, core-specific partial time-series data based on whether baseline data of the multi-core cable is present, configured to transform the core-specific partial time-series data into a time-frequency distribution, and configured to extract faulty-core determination data, and a faulty core classification unit configured to classify a fault core from the multi-core cable by inputting the extracted faulty-core determination data to a neural network.Type: GrantFiled: August 21, 2020Date of Patent: September 19, 2023Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Yong-June Shin, Su Sik Bang
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Patent number: 11619677Abstract: According to the exemplary embodiment of the present disclosure, the apparatus and the method for detecting an aging state of a battery based on a harmonic signal detect an aging state of the battery based on a harmonic signal of a pass signal of a detection signal which passes through the battery to quickly detect the aging state of the battery without separating the system during a charging and discharging cycle.Type: GrantFiled: July 2, 2021Date of Patent: April 4, 2023Assignee: UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITYInventors: Yong June Shin, Seon Hyeog Kim
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Patent number: 11609258Abstract: According to an apparatus and a method for detecting a cable abnormality based on reflectometry utilizing artificial intelligence according to the exemplary embodiment of the present disclosure, it is possible to monitor a state of the cable which connects the nodes in real time by inserting a result of the time-frequency domain reflectometry into a variational autoencoder (VAE) which is one of unsupervised learning.Type: GrantFiled: July 9, 2021Date of Patent: March 21, 2023Assignee: UIF (University Industry Foundation), Yonsei UniversityInventors: Yong-June Shin, Gu-Young Kwon
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Publication number: 20220170992Abstract: According to the exemplary embodiment of the present disclosure, the apparatus and the method for detecting an aging state of a battery based on a harmonic signal detect an aging state of the battery based on a harmonic signal of a pass signal of a detection signal which passes through the battery to quickly detect the aging state of the battery without separating the system during a charging and discharging cycle.Type: ApplicationFiled: July 2, 2021Publication date: June 2, 2022Inventors: Yong June SHIN, Seon Hyeog KIM
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Publication number: 20220170978Abstract: According to an apparatus and a method for detecting a cable abnormality based on reflectometry utilizing artificial intelligence according to the exemplary embodiment of the present disclosure, it is possible to monitor a state of the cable which connects the nodes in real time by inserting a result of the time-frequency domain reflectometry into a variational autoencoder (VAE) which is one of unsupervised learning.Type: ApplicationFiled: July 9, 2021Publication date: June 2, 2022Inventors: Yong-June SHIN, Gu-Young KWON
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Patent number: 11226361Abstract: An apparatus and a method for detecting a fault location of an underground cable are proposed. The apparatus includes: an optimal reference signal design unit configured to design a reference signal for detecting the fault location of the underground cable considering propagation characteristics of the underground cable according to a time-frequency domain reflectometry method; a signal application and acquisition unit configured, as the designed reference signal is generated and applied to the underground cable, to acquire the reference signal applied to the underground cable and a reflected signal of the applied reference signal; and a data analysis unit configured to analyze whether a fault location of the underground cable exists according to a decision on similarity between the reference signal and the reflected signal after obtaining a time-frequency domain energy distribution for the acquired reference signal and reflected signal.Type: GrantFiled: August 24, 2018Date of Patent: January 18, 2022Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Chae-Kyun Jung, Yong-June Shin, Gu-Young Kwon, Tae-Kyun Kim, Jae-Sang Hwang
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Publication number: 20210080497Abstract: Disclosed is a multi-core cable fault classification system which includes a reference signal measurement unit configured to measure a core-specific reference signal generated by applying an electromagnetic signal to a multi-core cable having at least two cores, a reflected-signal measurement unit configured to measure a core-specific reflected signal generated by reflecting the generated core-specific reference signal at a point of the multi-core cable, a data processing unit configured to extract, from time-series data for the measured core-specific reflected signal, core-specific partial time-series data based on whether baseline data of the multi-core cable is present, configured to transform the core-specific partial time-series data into a time-frequency distribution, and configured to extract faulty-core determination data, and a faulty core classification unit configured to classify a fault core from the multi-core cable by inputting the extracted faulty-core determination data to a neural network.Type: ApplicationFiled: August 21, 2020Publication date: March 18, 2021Applicant: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Yong-June SHIN, Su Sik BANG
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Patent number: 10942210Abstract: A reflected-wave processing apparatus according to one embodiment of the present invention may comprise: a reference signal generation unit for applying, to a cable, a first reference signal, the frequency of which increases over time, and a second reference signal, the frequency of which decreases over time; a reflected-signal acquisition unit for acquiring a first reflected signal and a second reflected signal which are reflected from the cable upon applying the first and second reference signals thereto; and a signal analysis unit for analyzing the first and second reflected signals.Type: GrantFiled: November 22, 2016Date of Patent: March 9, 2021Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Song-Ho Sohn, Sang-Cheol Han, Hyung-Suk Yang, Seong-Woo Yim, Yong-June Shin, Geon-Seok Lee, Su-Sik Bang, Yeong-Ho Lee, Gu-Young Kwon
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Publication number: 20200249266Abstract: An apparatus and a method for detecting a fault location of an underground cable are proposed. The apparatus includes: an optimal reference signal design unit configured to design a reference signal for detecting the fault location of the underground cable considering propagation characteristics of the underground cable according to a time-frequency domain reflectometry method; a signal application and acquisition unit configured, as the designed reference signal is generated and applied to the underground cable, to acquire the reference signal applied to the underground cable and a reflected signal of the applied reference signal; and a data analysis unit configured to analyze whether a fault location of the underground cable exists according to a decision on similarity between the reference signal and the reflected signal after obtaining a time-frequency domain energy distribution for the acquired reference signal and reflected signal.Type: ApplicationFiled: August 24, 2018Publication date: August 6, 2020Inventors: Chae-Kyun JUNG, Yong-June SHIN, Gu-Young KWON, Tae-Kyun KIM, Jae-Sang HWANG
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Publication number: 20190293706Abstract: A reflected-wave processing apparatus according to one embodiment of the present invention may comprise: a reference signal generation unit for applying, to a cable, a first reference signal, the frequency of which increases over time, and a second reference signal, the frequency of which decreases over time; a reflected-signal acquisition unit for acquiring a first reflected signal and a second reflected signal which are reflected from the cable upon applying the first and second reference signals thereto; and a signal analysis unit for analyzing the first and second reflected signals.Type: ApplicationFiled: November 22, 2016Publication date: September 26, 2019Inventors: Song-Ho SOHN, Sang-Cheol HAN, Hyung-Suk YANG, Seong-Woo YIM, Yong-June SHIN, Geon-Seok LEE, Su-Sik BANG, Yeong-Ho LEE, Gu-Young KWON
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Patent number: 7337079Abstract: An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. High resolution in detection of the reflected signal is provided by a time-frequency cross correlation function. The high-accuracy localization of faults in a wire/cable can be achieved by measurement of time delay offset obtained from the frequency offset of the reflected signal. The apparatus enables one to execute an automated diagnostic procedure of a wire/cable under test by control of peripheral devices.Type: GrantFiled: July 7, 2003Date of Patent: February 26, 2008Inventors: Jin-Bae Park, Yong-June Shin, Jong-Gwan Yook, Edward J. Powers, Eun-Seok Song, Joo-Won Kim, Tok-Son Choe, Seung-Hoon Sung
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Publication number: 20060097730Abstract: An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. High resolution in detection of the reflected signal is provided by a time-frequency cross correlation function. The high-accuracy localization of faults in a wire/cable can be achieved by measurement of time delay offset obtained from the frequency offset of the reflected signal. The apparatus enables one to execute an automated diagnostic procedure of a wire/cable under test by control of peripheral devices.Type: ApplicationFiled: July 7, 2003Publication date: May 11, 2006Inventors: Jin-Bae Park, Yong-June Shin, Jong-Qwan Yook, Edward Powers, Eun-Seok Song, Joo-Won Kim, Tok-Son Choe, Seung-Hoon Sung