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11.发明授权公开(公告)号：US10449981B2
公开(公告)日：2019-10-22
申请号：US15356414
申请日：2016-11-18
Inventor： Young Il Kim , Dae Geun Park , Geon Min Yeo , Yong Tae Lee , Hyun Woo Lee , Sun Hwa Lim
Abstract: An apparatus for dynamically configuring a wireless sensor relay network for monitoring train activity according to the present invention includes a plurality of wireless sensors that wirelessly transmit sensor data obtained by measuring heat and vibration of a train running unit, a plurality of coordinator units that are located in train cars, and receive the sensor data from one or more wireless sensors located within the same train car, a plurality of wireless relay units that are located in the train cars, form a wireless sensor relay network with the wireless relay unit located in a neighboring train car, and transmit the sensor data received from the coordinator units, and a gateway unit that receives the sensor data from the plurality of wireless relay units through the wireless sensor relay network, and transmits the received sensor data to a control center.
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公开(公告)号：US10741078B2
公开(公告)日：2020-08-11
申请号：US15820669
申请日：2017-11-22
Inventor： Young Il Kim , Dae Geun Park , Hyo Chan Bang , Soon Yong Song , Geon Min Yeo , Sun Hwa Lim , Byeong Cheol Choi
IPC: G08G1/16 , G08G1/095 , G06Q10/06 , G08G1/0967 , G08G1/052 , G05G1/01 , G01C21/36 , H04B1/3827 , G08G1/01
Abstract: A method for providing a traffic safety service of a traffic safety service server communicating with a client terminal includes: receiving sensor data of each sensor from the client terminal; classifying the sensor data into data according to at least one specific time slot for each sensor and calculating a safety score of each of the at least time slot; calculating an average of the safety scores of the at least time slot and calculating a safety score for each sensor, and calculating a safety index on the basis of the safety score for each sensor and a weight assigned to each sensor.
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公开(公告)号：US10251035B2
公开(公告)日：2019-04-02
申请号：US15361194
申请日：2016-11-25
Inventor： Geon Min Yeo , Young Il Kim , Dae Geun Park , Soon Yong Song , Yong Tae Lee , Hyun Woo Lee
Abstract: A control method for collision avoidance in low power wireless sensor communication including a center node and a plurality of neighbor nodes includes assigning a seed to a neighbor node associated with a center node, updating, by the neighbor node, the seed at each radio frame, determining, by the neighbor node, a criterion for performing communication, and transmitting data in a next slot according to a result of carrier sensing is provided.
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