• Proceedings of the Korean Information Science Society Conference
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• 2002.04a
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• pp.562-564
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• 2002

인터넷 정보 가전(IA: Internet Appliances)은 매우 복합적이고 다양한 제품과 기술로 구성되어 있지만, 간단하게 정의하자면 유무선 정보통신망에 연결되어 데이터 송수신이 가능한 디지털 TV, 인터넷 냉장고, DVD, 디지털 비디오 등과 같은 차세대 네트워크 가전제품을 말한다[l]. 이러한 인터넷 정보 가전에 있어서 Home PNA, PLC, IEEE1394, 무선 랜, Home RF, Bluetooth 등 다양한 기술과 규격이 홈 네트워크로 제시되어 있지만 이를 도입하기엔 부담이 큰 가전기기들이 대부분인 것이 현실이다. 따라서 본 연구에서는 홈 서버의 직렬 포트에 무선 모뎀을 장착해서 이동 로봇을 원격 제어하는 시스템을 설계 구현함으로써 하드웨어 및 소프트웨어적인 비용이 저렴한 인터넷 정보 가전용 이동 로봇 시스템의 구현 가능성을 제시한다.

• Proceedings of the KIEE Conference
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• 1998.11b
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• pp.558-560
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• 1998

The operation of robot manipulators has a restriction that the operator must reside at the factory, where the manipulator is used. To overcome this restriction, we propose a remote control system using the internet, the system which runs on the Window 95 environment is composed of the remote client which transfers commands to the server which control and manage the manipulator in the factory. In the control of Hong-ik Direct Drive Arm, it is necessary to consider the complex nonlinear parameters causing the mutual interaction between joints, so we use two TMS320C31 DSP chips in the controller for the real time dynamic control algorithms. For the test of system integrity and the verification of the mathematical modeling, we apply CTM, PD and VSS control algorithms and the simulation results are satisfactory.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10a
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• pp.667-669
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• 2004

지능형 청소로봇이란 사람을 대신하여 로봇 스스로가 집안을 청소랄 수 있는 로봇을 말한다 현재까지 출시된 지능형 로봇들 가운데 신뢰성 있는 청소로봇들은 대부분 고가형 청소로봇이다. 고가형 로봇은 위지 정보를 기억하고 경로를 계산하기 위해 많은 기억장치와 컴퓨팅 자원을 가지고 있기 때문에 200-400 만원대의 높은 가격에 판매되고 있다. 이것은 결국 청소로봇의 보편화에 큰 어려움으로 작용하고 있다 따라서 본 논문에서는 개인용 컴퓨터를 이용하여 정보를 기억하고, 경로를 계산함으로써 청소로봇의 기능을 단순화하여 보다 저렴하고 신뢰성 있는 청소로봇 시스템을 제안한다

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2377-2379
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• 2001

본 논문에서는 인터넷 기반의 이동로봇의 원격제어를 위한 시스템의 효율적인 구성을 제안하고 구현한다. 구현된 원격제어 시스템의 인터페이스로 일반적인 웹 브라우저를 사용하며, 이동로봇의 제어용 서버와 이동로봇의 감시용으로 외부에 설치된 CCD 카메라 제어용 서버의 효율적인 구성을 위해, 기존의 Unix나 PC상에서 구현되었던 제어용 서버를 내장형 웹 서버로 대체한다. 외부에 설치된 CCD 카메라의 영상은 프레임 그래버로 전송되며 전송된 영상은 Microsoft Visual C++ 프로그램 언어를 사용하여 할당된 메모리에 저장한다. 저장된 영상은 클라이언트 풀 기술(client pull technique)을 이용하여 웹 브라우저를 통해 직접 보여줌으로써 현장의 실시간 감시가 가능하도록 한다.

• Journal of Broadcast Engineering
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• v.25 no.5
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• pp.750-757
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• 2020

One of the basic tasks for robots to interact with humans is to quickly and accurately grasp human behavior. Therefore, it is necessary to increase the accuracy of human pose recognition when the robot is estimating the human pose and to recognize it as quickly as possible. However, when the human pose is estimated using deep learning, which is a representative method of artificial intelligence technology, recognition accuracy and speed are not satisfied at the same time. Therefore, it is common to select one of a top-down method that has high inference accuracy or a bottom-up method that has high processing speed. In this paper, we propose two methods that complement the disadvantages while including both the advantages of the two methods mentioned above. The first is to perform parallel inference on the server using multi GPU, and the second is to mix bottom-up and One-class Classification. As a result of the experiment, both of the methods presented in this paper showed improvement in speed. If these two methods are applied to the entertainment robot, it is expected that a highly reliable interaction with the audience can be performed.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.39 no.3
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• pp.65-70
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• 2002

This paper discusses the work-in-progress of a system to control a moving robot over the WWW(World Wide Web). That is, we describes the experimental results and control methods of system over the world wide web. The remote control of the system is controlled by accessing a simple form of interface that is connected to the server. For this application, a remote operator should have a general-purpose computer with Internet connection and a WWW browser to remotely operate the line-tracer through the Internet. As a remote operator summits an input by operating html files in the server, the program written in java is operated the equipment is being connected to the serial port. By being transmitted to the line-tracer through the infra-red sensor, the remote controlled signal is operated in distance. As a tool in order to identify the system's operation of the over the web is used the line-tracer. 

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.1
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• pp.82-88
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• 2018

The conventional remote fire image monitoring system has insufficient ability to check the video information of the fire scene in real time, so it was difficult to grasp the actual situation in case of fire and cope with it rapidly. In this paper, we propose a design of real­time fire image monitoring system using new RTSP module, which is composed of a server with RTSP function and client for transmitting and receiving images using wi­fi from a camera attached to such a robot system. We implemented the proposed remote fire monitoring system capable of receiving live video transmitted from a camera and confirmed, by field test, that the fire video image was normally received.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.17 no.1
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• pp.114-122
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• 2018

In this paper, we propose new water pressure measurement system to measure the water pressure of water pipe laid underground beneath the manhole efficiently. For this purpose, we installed water pressure sensor(IoT) which has built-in bluetooth module at valve of water pipe. The proposed system can be managed through collected data which measured at sensor and then transmitted to smart phone through bluetooth connectivity and re-transmitted to server on this system. By checking out water pressure data stored in server from remote location, the persons in charge can confirm the leakage of water pipe or propriety of water pressure in management area. By this procedure, they can detect the existence of condition of water pipe and manage water pressure of water pipe efficiently.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.5
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• pp.237-244
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• 2018

The Smart Factory level of manufacturing factories of SMEs now lacks a system for grasping the accurate inventory amount associated with inventory movements in managing warehouses at the basic level. Also, it is difficult to manage accurate materials for loss of data due to worker manual work and production method due to experience. In order to solve this problem, in this paper, automatic acquisition of inventory to minimize manual work to grasp workers' Inventory and improve automation is done. In the smart warehouse management system using the IoT-based autonomous mobile module, the autonomous mobile module acquires the data of the inventory storage while moving through the line. In order to grasp the material of the Inventory storage, The Camera module recognizes the name of the inventory storage. And Then, If output matches, the data measured by the sensor is transferred to the server. This data can be processed, saved in a database, and real-time inventory quantity and location can be grasped in a web-based monitoring environment for administrators. The Real-time Automatic Inventory (RAIC) systems is reduce manual tasks and expect the effects of automated inventory management systems.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.47 no.3
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• pp.95-103
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• 2024

The diversity of smart EV(electric vehicle)-related industries is increasing due to the growth of battery-based eco-friendly electric vehicle component material technology, and labor-intensive industries such as logistics, manufacturing, food, agriculture, and service have invested in and studied automation for a long time. Accordingly, various types of robots such as autonomous mobile robots and collaborative robots are being utilized for each process to improve industrial engineering such as optimization, productivity management, and work management. The technology that should accompany this unmanned automobile industry is unmanned automatic charging technology, and if autonomous mobile robots are manually charged, the utility of autonomous mobile robots will not be maximized. In this paper, we conducted a study on the technology of unmanned charging of autonomous mobile robots using charging terminal docking and undocking technology using an unmanned charging system composed of hardware such as a monocular camera, multi-joint robot, gripper, and server. In an experiment to evaluate the performance of the system, the average charging terminal recognition rate was 98%, and the average charging terminal recognition speed was 0.0099 seconds. In addition, an experiment was conducted to evaluate the docking and undocking success rate of the charging terminal, and the experimental results showed an average success rate of 99%.