Patents by Inventor Hyun-Key Jung
Hyun-Key Jung 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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Publication number: 20180120472Abstract: The present disclosure relates to an apparatus and a method for localizing an underwater anomalous body, which detect, in real time, any one disturbed signal among a disturbed electric field, a disturbed magnetic field, and a disturbed gravity field by means of a detection line installed in the water when an anomalous body such as a submarine passes through the water, calculates a correlation coefficient between the disturbed signal detected in real time and a template in which disturbed signals for each position are calculated and stored in advance, finds a correlation coefficient having highest similarity, and determines a position of the anomalous body from the template.Type: ApplicationFiled: July 28, 2017Publication date: May 3, 2018Applicant: Korea Institute Of Geoscience And Mineral ResourcesInventors: Hyo Sun LEE, Hyun-Key JUNG, Sung-Ho CHO, Hyoung Rae RIM
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Patent number: 9715029Abstract: An electric field sensor for underwater, including a sensing unit that senses a change in an electric field and transfers a sensing signal of the electric field to a signal line, a waterproof sealing unit that keeps a signal transferring portion of the sensing unit in a waterproof state, and a water-passing protection unit that shields and protects an exposed portion of the sensing unit. The sensing unit includes a nonconductive hollow pipe connected to the signal line, a sheet of carbon fiber that is wound around the outer surface of the hollow pipe and that senses an electric field, and a terminal ring that is electrically conductively installed at an end portion of the sheet of carbon fiber to provide a connection portion of the signal line and that is watertightly sealed by the waterproof sealing unit.Type: GrantFiled: February 5, 2016Date of Patent: July 25, 2017Assignee: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCESInventors: Sung-Ho Cho, Hyun-Key Jung, Hyosun Lee, Hyoungrea Rim
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Publication number: 20170097436Abstract: An electric field sensor for underwater, including a sensing unit that senses a change in an electric field and transfers a sensing signal of the electric field to a signal line, a waterproof sealing unit that keeps a signal transferring portion of the sensing unit in a waterproof state, and a water-passing protection unit that shields and protects an exposed portion of the sensing unit. The sensing unit includes a nonconductive hollow pipe connected to the signal line, a sheet of carbon fiber that is wound around the outer surface of the hollow pipe and that senses an electric field, and a terminal ring that is electrically conductively installed at an end portion of the sheet of carbon fiber to provide a connection portion of the signal line and that is watertightly sealed by the waterproof sealing unit.Type: ApplicationFiled: February 5, 2016Publication date: April 6, 2017Inventors: Sung-Ho Cho, Hyun-Key Jung, Hyosun Lee, Hyongrea Rim
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Patent number: 9329296Abstract: Provided are an underwater detector and a method for an underwater detection, and more particularly, an underwater detector including two direct current electrodes and a plurality of measurement electrodes in order to sense a movement of an object having conductivity different from that of water underwater. Since the underwater detector according to the present invention includes two direct current electrodes, a plurality of measurement electrodes, and a control and measurement module for measuring voltages of the plurality of measurement electrodes, the plurality of measurement electrodes each include an electrode control module and the electrode control module includes a first switch, a second switch, a controlling unit, and the like, the number of voltage measurement lines may be small and a voltage between two selected electrodes may be easily calculated.Type: GrantFiled: May 29, 2015Date of Patent: May 3, 2016Assignee: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCESInventors: Hyun-Key Jung, Sung-Ho Cho, Hyo Sun Lee, Hyoung Rae Rim
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Publication number: 20150346373Abstract: Provided are an underwater detector and a method for an underwater detection, and more particularly, an underwater detector including two direct current electrodes and a plurality of measurement electrodes in order to sense a movement of an object having conductivity different from that of water underwater. Since the underwater detector according to the present invention includes two direct current electrodes, a plurality of measurement electrodes, and a control and measurement module for measuring voltages of the plurality of measurement electrodes, the plurality of measurement electrodes each include an electrode control module and the electrode control module includes a first switch, a second switch, a controlling unit, and the like, the number of voltage measurement lines may be small and a voltage between two selected electrodes may be easily calculated.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Hyun-Key JUNG, Sung-Ho CHO, Hyo Sun LEE, Hyoung Rae RIM
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Patent number: 8547092Abstract: A “proton precession magnetometer sensor capable of all-direction measurement” according to the present invention, in which frequency of current induced in a coil by flowing and then breaking current in the coil is measured to calculate strength of an external magnetic field, is characterized in that the coil is a toroid coil. Alternatively, the coil may be achieved by two solenoid coils connected perpendicularly, or N solenoid coils connected in the form of a polygon, where N is an integer of 3 or more. The proton precession magnetometer sensor is capable of measuring the external magnetic field in all directions since there is no dead band, and is convenient since there is no need of adjusting the sensor to a certain direction when measuring magnetic force. Further, the present invention will bring accumulation of key original technology applicable to various cases in practice through development of improved impedance matching and power consumption optimization in future practice.Type: GrantFiled: December 23, 2008Date of Patent: October 1, 2013Assignee: Korea Institute of Geoscience & Mineral ResourcesInventors: Hyun Key Jung, Mu Taek Lim, Jeongsul Son, Hyong Rea Rim
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Patent number: 8368455Abstract: An apparatus and method for automatic control of current electrodes in a measuring system for an electrical resistivity survey. An exemplary apparatus includes: a circuit where one pair of metal oxide semiconductor field effect transistors (MOSFETs) are connected to upper and lower terminals of n current electrodes and the one pair of MOSFETs are connected in parallel with each other; and a controller which controls ON/OFF of each MOSFET. With this, the present invention provides a stable and semipermanent apparatus for automatic control of current electrodes, which is capable of bipolar high-speed switching, and a method thereof.Type: GrantFiled: December 31, 2007Date of Patent: February 5, 2013Assignee: Korea Institute of Geoscience & Mineral ResourcesInventor: Hyun-Key Jung
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Publication number: 20110074408Abstract: A “proton precession magnetometer sensor capable of all-direction measurement” according to the present invention, in which frequency of current induced in a coil by flowing and then breaking current in the coil is measured to calculate strength of an external magnetic field, is characterized in that the coil is a toroid coil. Alternatively, the coil may be achieved by two solenoid coils connected perpendicularly, or N solenoid coils connected in the form of a polygon, where N is an integer of 3 or more. The proton precession magnetometer sensor is capable of measuring the external magnetic field in all directions since there is no dead band, and is convenient since there is no need of adjusting the sensor to a certain direction when measuring magnetic force. Further, the present invention will bring accumulation of key original technology applicable to various cases in practice through development of improved impedance matching and power consumption optimization in future practice.Type: ApplicationFiled: December 23, 2008Publication date: March 31, 2011Applicant: KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCESInventors: Hyun Key Jung, Mu Taek Lim, Jeongsul Son, Hyong Rea Rim
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Publication number: 20100256786Abstract: An apparatus for automatic control of current electrodes in a measuring system for an electrical resistivity survey includes: a circuit where one pair of metal oxide semiconductor field effect transistors (MOSFETs) are connected to upper and lower terminals of n current electrodes and the one pair of MOSFETs are connected in parallel with each other; and a controller which controls ON/OFF of each MOSFET.Type: ApplicationFiled: December 31, 2007Publication date: October 7, 2010Applicant: KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCESInventor: Hyun-Key Jung