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公开(公告)号：US10084565B1
公开(公告)日：2018-09-25
申请号：US15797454
申请日：2017-10-30
Applicant: KOREA RAILROAD RESEARCH INSTITUTE
Inventor： Jung Tai Kim , Chi Hyung Ahn , Jae Hee Kim , Seh Chan Oh , Kyeong Jun Ko , Sung Soo Park , Jae Ho Lee , Sang Hoon Chang
CPC classification number: H04K3/22 , B61L3/125 , B61L15/0027 , H04K3/222 , H04K3/224 , H04K3/226 , H04K3/62 , H04K3/88 , H04K2203/16 , H04K2203/22 , H04K2203/32 , H04K2203/36
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.
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公开(公告)号：US09731736B2
公开(公告)日：2017-08-15
申请号：US14647823
申请日：2013-11-14
Applicant: KOREA RAILROAD RESEARCH INSTITUTE
Inventor： Jungtai Kim , Jae Ho Lee , Sungsoo Park , Jong Hyen Baek
CPC classification number: B61L25/04 , B61L25/023 , B61L25/025 , B61L25/048 , G01S5/0009 , G01S13/06 , G01S13/74
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.
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