公开(公告)号：US20140160602A1

公开(公告)日：2014-06-12

申请号：US13859304

申请日：2013-04-09

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Bon Gwan Gu ,  Jun Hyuk Choi ,  In Soung Jung ,  Joon Sung Park ,  Jin Hong Kim

IPC: G01R31/34 ,  H02H7/08

CPC classification number: G01R31/34 ,  H02H7/08 ,  H02P29/0243

Abstract: A method and system for detecting a fault of a serial coil type permanent magnet motor includes driving the motor based on a predefined current reference value, detecting a phase current vector of the motor, and calculating a current compensation value for removing a negative sequence component of the motor based on the phase current vector. The current compensation value is provided to a negative sequence current controller for calculating a faulty phase and a degree of a fault of the motor using the output of the negative sequence current controller and a fault model to which induced magnetic flux variations in a specific slot of a specific faulty phase of the motor and other slots of the same phase as the specific phase are applied, and applying a current reference value to which the calculated faulty phase and degree of fault are applied.

Abstract translation: 用于检测串联线圈型永磁电动机的故障的方法和系统包括基于预定的电流参考值来驱动电动机，检测电动机的相电流矢量，以及计算电流补偿值以消除负序分量 电机基于相电流矢量。 电流补偿值被提供给负序电流控制器，用于使用负序电流控制器的输出来计算电动机的故障相位和故障程度，以及故障模型，特定时隙中的感应磁通量变化 应用与特定相位相同的电动机和其它时隙的特定故障相位，并施加计算出的故障相位和故障程度的电流参考值。

公开(公告)号：US08737946B2

公开(公告)日：2014-05-27

申请号：US13692398

申请日：2012-12-03

Applicant: Korea Electronics Technology Institute

Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Sang Hoon Park ,  Young Jin Kim ,  Eun Su Kim ,  Dong Hyun Baek ,  Seoung Yeoung Son ,  Jin Young Lee

IPC: H04B1/26 ,  H04B15/00

CPC classification number: G06G7/16 ,  H04B1/28

Abstract: A down-frequency conversion circuit and up-frequency conversion circuit, and a receiver and transmitter applying the same are provided. The down-frequency conversion circuit includes a harmonic mixer and general mixer, and thus becomes able to convert frequency using one LO (Local Oscillator) frequency, thereby reducing burden on generating LO frequency.

Abstract translation: 提供了一个低频转换电路和上变频电路，以及一个接收器和发射机应用它。 低频转换电路包括谐波混频器和通用混频器，因此能够使用一个LO（本地振荡器）频率转换频率，从而减少产生LO频率的负担。

公开(公告)号：US20140064740A1

公开(公告)日：2014-03-06

申请号：US14015285

申请日：2013-08-30

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Sang Yub Lee ,  Sang Hyun Park ,  Hyo Sub Choi ,  Chul Dong Lee

IPC: H04B10/116

CPC classification number: H04B10/116

Abstract: Provided herein is a communication system and method capable of performing visible light communication and optic networking, the system performing visible light communication with an electronic device inside a vehicle and accessing an optic network inside the vehicle. Accordingly, RF interference and distortion is removed, and thus not effecting use of a wireless device inside the vehicle, thereby reducing malfunction/error of a electronic control device and enabling real time data transceiving in the vehicle.

Abstract translation: 本文提供了一种能够执行可见光通信和光网络的通信系统和方法，该系统与车辆内的电子设备进行可见光通信并且访问车辆内部的光网络。 因此，RF干扰和失真被去除，从而不会使车辆内部的无线装置使用，从而减少电子控制装置的故障/错误，并使车辆中实时数据收发。

公开(公告)号：US20140063253A1

公开(公告)日：2014-03-06

申请号：US14012336

申请日：2013-08-28

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Sang Yub Lee ,  Hyo Sub Choi ,  Sang Hyun Park ,  Soo Young Min

IPC: H04N7/18

CPC classification number: H04N7/181 ,  B60R1/00 ,  B60R2300/105 ,  B60R2300/30 ,  B60R2300/802

Abstract: The vehicle AVM system according to an exemplary embodiment of the present disclosure includes a first camera network constructed of some of the cameras configuring the AVM system; a second camera network constructed of some of the cameras configuring the AVM system; and a processor configured to create a first image from the images created by the cameras configuring the first camera network, and to create a second image from the images created by the cameras configuring the second camera network. Accordingly, by installing more number of cameras in an AVM system of a vehicle than the number of cameras in a general vehicle and thus removing dead zones according to vehicle characteristics, it becomes possible to perform smooth networking and prevent image delay, thereby preventing accidents due to dead zones and image delay.

Abstract translation: 根据本公开的示例性实施例的车辆AVM系统包括由配置AVM系统的一些相机构成的第一相机网络; 由配置AVM系统的一些摄像机构成的第二摄像机网络; 以及处理器，被配置为从由配置第一相机网络的相机创建的图像创建第一图像，并且从由配置第二相机网络的相机创建的图像创建第二图像。 因此，通过在车辆的AVM系统中安装比普通车辆的摄像机数量更多的摄像机，并且根据车辆特性去除死区，可以进行顺畅的联网，防止图像延迟，从而防止事故 死区和图像延迟。

公开(公告)号：US20030031231A1

公开(公告)日：2003-02-13

申请号：US10083119

申请日：2002-02-27

Applicant: Korea Electronics Technology Institute

Inventor： Young-Hwan You ,  Cheol-Hee Park ,  Min-Chul Ju ,  Kee-Hyun Park ,  Jin-Woong Cho

IPC: H04B001/707

CPC classification number: H04B1/715 ,  H04B1/7143 ,  H04B2001/7154

Abstract: The present invention relates to an adaptive frequency hopping apparatus in a wireless personal area network (WPAN) system, wherein predetermined packets of data can be correctly transmitted by estimating the channel qualities of operating bands in advance and transmitting the packets through a proper band. The adaptive frequency hopping apparatus according to the present invention comprises a frequency table for monitoring each channel quality and storing and outputting information on each channel quality accumulated therein, a frequency hopping transceiver for generating and outputting a frequency pattern in accordance with predetermined rules, a link controller for generating an asynchronous connectionless (ACL) link in accordance with output signals of the frequency table and the frequency hopping transceiver and controlling selection of an operating mode between a channel avoidance scheme and a channel selection scheme, a packet handler for generating packet data by integrating a synchronous connection oriented (SCO) link and the ACL link inputted thereinto, a gaussian frequency shift keying (GFSK) modulator for performing GFSK modulation for signals outputted from the packet handler, a mode selector for selecting the operating mode between the channel avoidance scheme and the channel selection scheme in accordance with output signals of the frequency hopping transceiver and the link controller, a frequency synthesizer for synthesizing frequencies in accordance with output signals of the mode selector, a first multiplier for multiplying signals from outputted from the frequency synthesizer and the GFSK modulator and for outputting the multiplied signals as transmission signals, a second multiplier for multiplying the output signals of the frequency synthesizer by received signals, an RSSI detector for detecting a RSSI from output signals of the second multiplier, a GFSK demodulator for performing GFSK demodulation for the output signals of the second multiplier, a packet handler for restoring packet-type data from output signals of the GFSK demodulator, and a channel quality detector for estimating the channel quality by using the output signals of the RSSI detector and the packet handler, and storing it in the frequency table.

公开(公告)号：US20250165666A1

公开(公告)日：2025-05-22

申请号：US18657009

申请日：2024-05-07

Applicant: Korea Electronics Technology Institute

Inventor： Sang Yub LEE ,  Inpyo CHO ,  Jaekyu LEE

IPC: G06F30/20

Abstract: A method of modeling a hybrid sensor is proposed. The method may include receiving information on at least one physical sensor that is disposed within a target space, disposing at least one virtual sensor within the target space, and obtaining sensing data of the virtual sensor and converting the sensing data into visualization information. The method may also include analyzing matching between an additionally disposed physical sensor and the virtual sensor when the physical sensor is additionally disposed at a location of any one of the disposed virtual sensors. The method may further include correcting the weight of the sensing data of the virtual sensor based on results of the analysis of the matching.

公开(公告)号：US20250164962A1

公开(公告)日：2025-05-22

申请号：US18951016

申请日：2024-11-18

Applicant: Korea Electronics Technology Institute

Inventor： Seung Hyeon PARK ,  Ki Woong KWON ,  Sang Hun KIM

IPC: G05B19/18

Abstract: Provided are AI-based optimal operation number control system and method for increasing operation efficiency of industrial boilers. A boiler control method according to an embodiment includes: collecting operation data of boilers; deriving operating boiler combinations by inputting the collected operation data to an AI model that is trained to receive operation data and to derive operating boiler combinations; and controlling operation of the boilers according to the derived operating boiler combinations. Accordingly, by analyzing operating conditions changeable according to a schedule of the field and using the operating conditions for deriving a control value, operation efficiency of industrial boilers are increased.

公开(公告)号：US20250139916A1

公开(公告)日：2025-05-01

申请号：US19006916

申请日：2024-12-31

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Chool PARK ,  Jun Hwan JANG ,  Jin Wook YANG ,  Minsu CHOI ,  Junsuk LEE ,  Bonjae KOO

IPC: G06T19/00 ,  G06T15/00 ,  H04N21/414 ,  H04N21/81

Abstract: Proposed is a system for providing video-based augmented reality content. The system may include a mobile device that transmits an image captured via a camera and IMU data, which is position and orientation information about the camera, and plays back received AR content. The image and the IMU data may be transmitted by being combined into a single image data packet. The system may also include a split rendering server that uses the image and IMU data of the image data packet of the mobile device to render a three-dimensional object, and provides the AR content, which is the rendered result, to the mobile device.

公开(公告)号：US20250139153A1

公开(公告)日：2025-05-01

申请号：US18927089

申请日：2024-10-25

Applicant: Korea Electronics Technology Institute

Inventor： San KIM ,  Sa Im SHIN ,  Jin Yea JANG ,  Byung Gill JOE

IPC: G06F16/432 ,  G06F40/35

Abstract: There is provided a multi-modal knowledge-based conversation data generation and additional information labeling system. A conversation data generation method according to an embodiment includes: receiving input of a user utterance; searching pieces of text knowledge related to the user utterance; searching images related to the user utterance; receiving input of an answer to the user utterance referring to the searched text knowledge and images; and collecting the user utterances, the pieces of text knowledge, the images, and the answer to the user utterances as conversation data. Accordingly, open domain knowledge-based conversation data may be established by using both images and texts, and an image may be used as utterance and information acquired from the image may be used as utterance, so that AI conversation data similar to actual conversations can be established.

公开(公告)号：US12287568B2

公开(公告)日：2025-04-29

申请号：US17698404

申请日：2022-03-18

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Hyeong Keun Kim ,  Seul Gi Kim ,  Hyun Mi Kim ,  Jin Woo Cho ,  Hye Young Kim

IPC: G03F1/62 ,  C01B32/184 ,  G03F7/00 ,  H01L21/02 ,  H01L21/324 ,  H01L29/16

Abstract: This application relates to a pellicle for extreme ultraviolet lithography and a manufacturing method thereof using the low-temperature direct growth method of multilayer graphene. In one aspect, the method includes forming an etch stopper on a substrate, forming a seed layer on the etch stopper, the seed layer including at least one of amorphous boron, BN, BCN, B4C, or Me-X (Me is at least one of Si, Ti, Mo, or Zr, and X is at least one of B, C, or N). The method may also include forming a metal catalyst layer on the seed layer; forming an amorphous carbon layer on the metal catalyst layer, and directly growing multilayer graphene on the seed layer through interlayer exchange between the metal catalyst layer and the amorphous carbon layer by performing a low-temperature heat treatment at 450° C. to 600° C.