公开(公告)号：US20170370891A1

公开(公告)日：2017-12-28

申请号：US15450552

申请日：2017-03-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dae Seung YOO

IPC: G01N33/00

CPC classification number: G01N33/0031 ,  G01N33/0011 ,  G01N33/004 ,  G01N33/0044 ,  G01N33/0047 ,  G01N33/0075

Abstract: A portable device for measuring gas in a closed space includes an air intake and exhaust unit configured to suction external air and discharge the suctioned air, a sensor unit configured to measure characteristics of the air suctioned by the air intake and exhaust unit, a communication unit configured to communicate with a host system, a power supply unit configured to supply power to the air intake and exhaust unit, the sensor unit, and the communication unit, and a control unit configured to control the air intake and exhaust unit, the sensor unit, the communication unit, and the power supply unit so that the sensor unit measures the characteristics of the air suctioned by the air intake and exhaust unit and configured to transmit measurement information to the host system through the communication unit.

公开(公告)号：US20200249214A1

公开(公告)日：2020-08-06

申请号：US16684161

申请日：2019-11-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae Seung YOO ,  Tae Hyun YOON ,  Woo Sung JUNG

IPC: G01N33/00 ,  G06F17/18

Abstract: The present invention relates to technology for monitoring a gas in a closed space, and more particularly, to a system for monitoring a gas in a closed space and an operating method of the system, which monitor a gas in a closed space and diagnose and correct an abnormality of a closed-space gas measurement apparatus.

公开(公告)号：US20150229382A1

公开(公告)日：2015-08-13

申请号：US14286137

申请日：2014-05-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Yong LEE ,  Hyung Joo KIM ,  Dae Seung YOO ,  Kyong Hee LEE ,  Gwang Ja JIN ,  Byung Tae JANG ,  Dong Sun LIM

IPC: H04B7/08 ,  H04B7/04 ,  H01Q1/24

CPC classification number: H04B7/082 ,  H01Q1/34 ,  H01Q3/26 ,  H01Q21/29 ,  H04B7/0404 ,  H04B7/0808 ,  H04B7/0814

Abstract: An antenna switching system according to an exemplary embodiment of the present invention includes a plurality of directional antenna which is mounted in a ship to receive a wireless signal; an antenna switch which selects one of the plurality of directional antennas; a modem which is connected to the directional antennas through the antenna switch to extract a strength of a received signal; and a switching determining unit which outputs an antenna selection signal to the antenna switch based on the strength of the received signal and GPS/DR information of a transmission side ship and its own ship.

Abstract translation: 根据本发明的示例性实施例的天线切换系统包括安装在船舶中以接收无线信号的多个定向天线; 天线开关，其选择所述多个定向天线中的一个; 调制解调器，其通过天线开关连接到定向天线以提取接收信号的强度; 以及切换确定单元，其基于接收信号的强度和发送侧船舶及其自己的船舶的GPS / DR信息，向天线开关输出天线选择信号。