公开(公告)号：US20240077417A1

公开(公告)日：2024-03-07

申请号：US18350137

申请日：2023-07-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin Hwa RYU ,  Soocheol KIM ,  Hyunseok KIM ,  So Yung PARK ,  Hoe-Sung YANG ,  Kang Bok LEE ,  Kwang-Soo CHO ,  Kyu Won HAN

IPC: G01N21/3504 ,  G02B6/42

CPC classification number: G01N21/3504 ,  G02B6/4215 ,  G02B6/4298 ,  G01N2201/08

Abstract: The disclosure relates to a non-dispersive infrared (NDIR) gas sensor which detects the concentration of gas with a simple structure and method by manufacturing an optical waveguide with a gas-permeable polymer material instead of a conventional cavity or chamber type. An optical signal travels through the optical waveguide of gas-permeable polymer by total internal reflection, and the gas naturally penetrates the optical waveguide without the use of separate inlet and outlet openings, so that the optical signal and gas particles come into contact with each other within the optical waveguide. Since the optical signal detected by a photodetector at the other end of the optical waveguide after traveling while contacting the gas particles has properties changed according to the concentration of the gas which they have contacted in the optical waveguide, it is possible to measure the concentration of a specific gas from the detected optical signal.

公开(公告)号：US20150144694A1

公开(公告)日：2015-05-28

申请号：US14251238

申请日：2014-04-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Won Kyu CHOI ,  Hoe-Sung YANG ,  Chan-Won PARK ,  Cheol Sig PYO ,  Hae-Won SON

IPC: G06K7/10

CPC classification number: G06K7/10336 ,  G06K7/10148 ,  G06K7/10356

Abstract: The loop antenna includes a loop coil connected to an RF signal source of a reader through a feed cable, and a switch that is turned on and off depending on a DC voltage that is proportional to the magnitude of an RF signal supplied from the RF signal source of the reader and opens the loop coil when turned off and closes the loop coil when turned on.

Abstract translation: 环形天线包括通过馈电电缆连接到读取器的RF信号源的环形线圈，以及根据与从RF信号提供的RF信号的幅度成比例的DC电压而导通和截止的开关 读取器的电源，并在断开时打开环形线圈，并在接通时闭合环形线圈。

公开(公告)号：US20140306805A1

公开(公告)日：2014-10-16

申请号：US14011225

申请日：2013-08-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae-young JUNG ,  Ji-Hoon BAE ,  Won Kyu CHOI ,  Kyu Won HAN ,  Chan-Won PARK ,  Jong-Suk CHAE ,  Cheol Sig PYO ,  Hoe-Sung YANG

IPC: G06K7/10

CPC classification number: G06K19/0726 ,  G06K19/0723

Abstract: A tag apparatus communicating with a reader acquires a command from a signal that is received from the reader, converts data corresponding to the acquired command to a plurality of multi-level parallel data, and generates a plurality of tag load impedances based on bias voltages that are mapped to correspond to each level of the plurality of parallel data. Therefore, a signal having electrical energy corresponding to the plurality of tag load impedances is transmitted to the reader.

Abstract translation: 与读取器通信的标签装置从从读取器接收的信号中获取命令，将与获取的命令相对应的数据转换为多个多级并行数据，并且基于偏置电压产生多个标签负载阻抗， 被映射以对应于多个并行数据的每个级别。 因此，具有与多个标签负载阻抗相对应的电能的信号被发送到读取器。