Patents Assigned to Korea Railroad Research Institute
  • Patent number: 10429180
    Abstract: Provided is versine trolley-type equipment for inspecting a track irregularity, having sensors respectively provided to a trolley so as to measure a height difference, direction misalignment, gauge irregularity, rail longitudinal slope, cant and the like of railroad rails, and simultaneously measuring the height difference and direction misalignment of a left rail and a right rail so as to reduce a measurement time by half and, also, allowing left and right measurement frames to freely move in a vertical direction within a predetermined range, thereby bringing front and rear trolley wheels of the left and right measurement frames into close contact with the rails all the time even if the rails are warped.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: October 1, 2019
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Il Yoon Choi, Jun Suk Lee, Sam Young Kwon, In Ki Min
  • Patent number: 10161090
    Abstract: A method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 25, 2018
    Assignee: Korea Railroad Research Institute
    Inventors: Kyoung Chan Lee, In Ho Yeo, Sung Il Kim, Seung Yup Jang, Hyun-Min Kim, Ki Hyun Kim, Hyang Wook Ma, Young Hak Kwak, Yoon Bong Shin, In Gyu Kim, Young Jin Kim
  • Publication number: 20180354535
    Abstract: The present invention relates to a system, server, and method for automatically calculating a platform dwell time of a train. The system includes a passenger detection device configured to determine the number of passengers who board or deboard a train entering a station; an operation control server configured to calculate an appropriate dwell time of the train by using the number of passengers, which is received from the passenger detection device; and an ATO device configured to control a dwell time of the train by using the appropriate dwell time, which is received from the operation control server.
    Type: Application
    Filed: December 22, 2015
    Publication date: December 13, 2018
    Applicant: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: BONG KWAN CHO, KEE JUN PARK
  • Patent number: 10138604
    Abstract: By supporting a space generated by a settlement of the track bed gravel or asphalt roadbed underneath a concrete rail tie with cylindrical rods, and installing the present invention, one each separately, on the left and right sides of the concrete rail tie, recovery from settlements is automatic, and the response to differential settlements of the left and right rails of the track due to the train load can be easily facilitated, and by installing pressure reducing valves on the upper part of the concrete rail ties, pressure can be reduced while maintaining the track system as is without having to dismantle the concrete rail ties, and accordingly the usability of the concrete rail ties can be improved.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 27, 2018
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Seong-Hyeok Lee, Jin-Wook Lee
  • Patent number: 10125833
    Abstract: Provided is a high heat resistant brake disk for a railroad vehicle, which is manufactured using a nano material having high heat conductivity, such as a carbon nanotube (CNT) or graphene, to improve heat resistance of an overheated portion of the brake disk, and which can extend a life of the brake disk by suppressing performance deterioration due to a thermal shock. The high heat resistant brake disk includes a hub inserted into an axle of the railroad vehicle and an outer circumference coupled to a vehicle wheel to coaxially rotate with the vehicle wheel, wherein at least one pattern unit made from a high heat resistant nano material is formed on one surface of the brake disk.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 13, 2018
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventor: Dong Hoon Kang
  • Patent number: 10084565
    Abstract: An apparatus and method for protecting a communication device of a railroad car is provided. The apparatus includes an antenna portion configured to include main antennas and an auxiliary antenna, a main receiver configured to check a magnitude of a received signal transferred through the main antennas of the antenna portion, an auxiliary receiver configured to check a magnitude of a received signal transferred through the auxiliary antenna of the antenna portion, and a controller configured to compare the magnitude of the signal received by the main receiver and the magnitude of the signal received by the auxiliary receiver, determine whether there is a jamming signal according to a comparison result, and take a preset countermeasure when it is determined that there is a jamming signal.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 25, 2018
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Jung Tai Kim, Chi Hyung Ahn, Jae Hee Kim, Seh Chan Oh, Kyeong Jun Ko, Sung Soo Park, Jae Ho Lee, Sang Hoon Chang
  • Patent number: 10046779
    Abstract: A wireless sensor device includes: an energy harvester configured to convert vibration generated from a broadband vibration source into electricity, an elastic member arranged to receive the vibration and a communication unit fixed by the elastic member, supplied with the converted electricity from the energy harvester, and configured to transmit sensing information obtained by sensing a measurement target. The elastic member operates as a mechanical filter configured to limit a frequency range and an acceleration magnitude of the vibration to be transferred to the communication unit for stabilizing the performance of the communication unit, and the communication unit is arranged to receive vibration passing through the elastic member.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 14, 2018
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventor: Jaehoon Kim
  • Publication number: 20180143017
    Abstract: Provided is versine trolley-type equipment for inspecting a track irregularity, having sensors respectively provided to a trolley so as to measure a height difference, direction misalignment, gauge irregularity, rail longitudinal slope, cant and the like of railroad rails, and simultaneously measuring the height difference and direction misalignment of a left rail and a right rail so as to reduce a measurement time by half and, also, allowing left and right measurement frames to freely move in a vertical direction within a predetermined range, thereby bringing front and rear trolley wheels of the left and right measurement frames into close contact with the rails all the time even if the rails are warped.
    Type: Application
    Filed: February 22, 2016
    Publication date: May 24, 2018
    Applicant: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: IL YOON CHOI, JUN SUK LEE, SAM YOUNG KWON, IN KI MIN
  • Patent number: 9876611
    Abstract: A method for transmitting packets by a transmitter in a wireless communication network and retransmitting the packets not received correctly by receivers is discussed. The method includes transmitting the packets to at least two receivers, receiving reception acknowledgement response signals including ACK or NACK signals for the packets transmitted to the receivers, analyzing patterns of the received reception acknowledgement response signals in accordance with a number of the ACK or NACK signals, differently index coding the packets which are not received correctly by each receiver, and retransmitting the index-coded packets.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: January 23, 2018
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Sang Won Choi, Ju Yeop Kim, Yong Soo Song, Yong Gyu Kim
  • Patent number: 9855852
    Abstract: A charging apparatus for unmanned aerial vehicles and a charging method thereof. The charging apparatus includes: a transmit coil provided to a charging station and generating a magnetic field; a reception coil generating induced electromotive force according to variation of magnetic flux of the transmit coil; a reception coil adjuster adjusting at least one of an inclination and an orientation of the reception coil; and a controller controlling at least one of the inclination and the orientation of the reception coil by controlling the reception coil adjuster according to magnitude of the induced electromotive force generated in the reception coil by the magnetic field generated in the transmit coil.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: January 2, 2018
    Assignee: Korea Railroad Research Institute
    Inventors: In Ho Cho, Shin Myung Jung, Yong Jang Kwon, Byung Song Lee
  • Patent number: 9789859
    Abstract: Disclosed are a railway vehicle braking system and method. The railway vehicle braking system includes a braking command generating unit generating a braking command to stop a railway vehicle, a comparison unit determining whether the braking command has been changed, a delay unit delaying and outputting the braking command depending upon a determination result from the comparison unit, and a digital-to-analog converter converting the braking command, which has been delayed by the delay unit, into an analog signal and inputting the analog signal to an actuator.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: October 17, 2017
    Assignee: Korea Railroad Research Institute
    Inventors: Jung Tai Kim, Jai Sung Hong, Kyeong Jun Ko, Moo Sun Kim
  • Patent number: 9731736
    Abstract: An apparatus for detecting a position of a train, the apparatus includes a reader. The reader electrically irradiates beams along a plurality of directions toward a tag, combines signals received from the tag and obtains a beam direction information toward the tag, and then detects the position of the train using the beam direction information and a tag information of the tag.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 15, 2017
    Assignee: Korea Railroad Research Institute
    Inventors: Jungtai Kim, Jae Ho Lee, Sungsoo Park, Jong Hyen Baek
  • Patent number: 9701325
    Abstract: A railroad vehicle monitoring system installed on a railroad vehicle includes: wireless sensor devices installed at attached equipment of the railroad vehicle, including a sensor that senses statuses of the attached equipment, configured to wirelessly transmit a sensing value sensed by the sensor in real time, and including an energy harvester configured to convert energy generated by running of the railroad vehicle into electric energy, and supply the electric energy as a power source for the sensor, a signal process in the sensing value, and wireless communication of the sensing value; sink node devices configured to wirelessly receive the sensing value and output, in real time, railroad vehicle status information obtained by integrating the received sensing value; and a vehicle status monitoring device configured to receive the railroad vehicle status information, integrate and manage the railroad vehicle status information, and output the integrated railroad vehicle status information in real time.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 11, 2017
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Jaehoon Kim, Jae Yun Lee, Kwan Sup Lee, Young Il Kim, Kun Min Yeo
  • Patent number: 9698663
    Abstract: Provided is an orientation control device for a magnetic fluid, includes: a magnetic fluid having magnetic nanoparticles; an induction power generation unit configured to include a silicone tube through which the magnetic fluid passes and a solenoid coil which is wound around a predetermined section outside the silicone tube to generate induced power when the magnetic fluid passes through an inner side of the silicone tube; and a magnetic pole direction control unit configured to include a silicone tube at an entrance portion of the induction power generation unit and a solenoid coil wound around a predetermined section outside the silicone tube and generating a flux when a current flows therein so as to control pole orientation of the magnetic fluid.
    Type: Grant
    Filed: April 13, 2013
    Date of Patent: July 4, 2017
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Woo Tae Jeong, Duck Shin Park, Soon Bark Kwon
  • Patent number: 9688290
    Abstract: A door structure of an electric rail car is provided to block outside noise and vibration. The door structure of the electric rail car includes a door frame, a guide rail and a sealing device. The door frame has an opening thereinside. The guide rail guides an opening and a closing of the door frame. The sealing device is inserted into the opening, descends to make contact with the guide rail when the door frame is closed, and ascends to be spaced apart from the guide rail when the door frame is open.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: June 27, 2017
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Moo Sun Kim, Jai-Sung Hong, Jae-Ho Lee, Kang-Mi Lee, Dong-Uk Jang, Jung-Tai Kim, Taesik Kim
  • Publication number: 20170057365
    Abstract: A charging apparatus for unmanned aerial vehicles and a charging method thereof. The charging apparatus includes: a transmit coil provided to a charging station and generating a magnetic field; a reception coil generating induced electromotive force according to variation of magnetic flux of the transmit coil; a reception coil adjuster adjusting at least one of an inclination and an orientation of the reception coil; and a controller controlling at least one of the inclination and the orientation of the reception coil by controlling the reception coil adjuster according to magnitude of the induced electromotive force generated in the reception coil by the magnetic field generated in the transmit coil.
    Type: Application
    Filed: February 23, 2016
    Publication date: March 2, 2017
    Applicant: Korea Railroad Research Institute
    Inventors: In Ho Cho, Shin Myung Jung, Yong Jang Kwon, Byung Song Lee
  • Publication number: 20170009405
    Abstract: By supporting a space generated by a settlement of the track bed gravel or asphalt roadbed underneath a concrete rail tie with cylindrical rods, and installing the present invention, one each separately, on the left and right sides of the concrete rail tie, recovery from settlements is automatic, and the response to differential settlements of the left and right rails of the track due to the train load can be easily facilitated, and by installing pressure reducing valves on the upper part of the concrete rail ties, pressure can be reduced while maintaining the track system as is without having to dismantle the concrete rail ties, and accordingly the usability of the concrete rail ties can be improved.
    Type: Application
    Filed: December 4, 2014
    Publication date: January 12, 2017
    Applicant: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Seong-Hyeok LEE, Jin-Wook LEE
  • Patent number: 9531219
    Abstract: Disclosed is a non-contact power feeding apparatus using a conductive fluid, through which an electric railroad vehicle or a trolleybus receives required power from a contact wire in a non-contact state by using the conductive fluid. The non-contact power feeding apparatus according to the present invention includes: a fluid injection hole defined in a vehicle to inject the conductive fluid toward the contact wire; a conductive fluid container for supplying the conductive fluid that is injected through the fluid injection hole; a pressing pump for injecting the conductive fluid within the conductive fluid container through the fluid injection hole; and a current collection terminal disposed on a side of the fluid injection hole to receive the power from the contact wire in a non-contact manner by using the conductive fluid as a medium.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: December 27, 2016
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventor: Seong Won Nam
  • Patent number: 9421983
    Abstract: The present invention relates to an active pressurization system making use of a platform track area upper slab of an underground train station. A track area, where a fast train and a slow train pass through an underground train station, is divided into a fast-train running space and a slow-train running space by means of a partition wall. Formed in an upper slab of the train station, there are a first and a second air-stream out- and in-flow space respectively linking to the fast-train running space and the slow-train running space. The front end of the second air-stream out- and in-flow space is provided with a first port and a first damper, while the rear end is provided with a second port and a second damper. The second air-stream out- and in-flow space is provided with a third port for venting of the slow-train running space. The first air-stream out- and in-flow space is provided with a fourth port for venting of the fast-train running space.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: August 23, 2016
    Assignees: KOREA RAILROAD RESEARCH INSTITUTE, BNTTEK INC Co., Ltd.
    Inventors: Dong Hyeon Kim, Ho Seok Lee
  • Publication number: 20160221551
    Abstract: Disclosed are a railway vehicle braking system and method. The railway vehicle braking system includes a braking command generating unit generating a braking command to stop a railway vehicle, a comparison unit determining whether the braking command has been changed, a delay unit delaying and outputting the braking command depending upon a determination result from the comparison unit, and a digital-to-analog converter converting the braking command, which has been delayed by the delay unit, into an analog signal and inputting the analog signal to an actuator.
    Type: Application
    Filed: November 19, 2014
    Publication date: August 4, 2016
    Applicant: Korea Railroad Research Institute
    Inventors: Jung Tai Kim, Jai Sung Hong, Kyeong Jun Ko, Moo Sun Kim