公开(公告)号：US11637488B2

公开(公告)日：2023-04-25

申请号：US17042524

申请日：2018-03-29

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Jae Hoon Kim ,  Da Hoon Ahn

IPC: H02K35/02 ,  G01M15/05

Abstract: Provided is an energy harvester and an engine monitoring system. An engine monitoring system using an energy harvester includes at least one or more self-power generation wireless sensor nodes for generating electric energy using the energy harvester and monitoring an engine; and a management server that receives and manages sensing information received from the self-power generation wireless sensor nodes. The self-power generation wireless sensor nodes includes sensor modules monitoring the engine; a data processing unit identifying and packaging sensing information; a wireless communication unit wirelessly transmitting the packaged sensing information to the management server; the energy harvester generating electric energy to be supplied to the sensor modules, the data processing unit, and the wireless communication unit by converting vibration energy of the engine into the electric energy; and a power management unit controlling the electric energy to supply the electric energy to the sensor modules, the data processing unit.

公开(公告)号：US11320070B2

公开(公告)日：2022-05-03

申请号：US16607943

申请日：2018-07-19

Applicant: KOREA RAILROAD RESEARCH INSTITUTE

Inventor： Jae Heon Choe ,  Kwan Sup Lee ,  Su Yong Choi ,  Chang Young Lee ,  Jung Youl Lim ,  Jin Ho Lee ,  Yong Jun Jang ,  Jeong Min Jo ,  Min Hwan Ok ,  Jae Hoon Kim

IPC: B61B13/10 ,  F16L17/02 ,  G01M3/32

Abstract: A tube infrastructure includes a first tube; a second tube that is coupled to the first tube; and a fluid tank that is disposed to surround a coupling region of the first tube and the second tube and is filled with a fluid to seal the coupling region, wherein the fluid tank allows negative pressure to be maintained inside the first tube and the second tube.