Hae-Jong Joo

Quality Measure Method for IPTV Subscriber Unit

This paper proposes a system for measuring the quality of the services received by the subscriber in a network environment providing IPTV services, and a method of measuring quality using this system. According to the proposed method, the quality measurement device is connected to the front end of the set-top box (STB) of the IPTV service subscriber. The improved performance of the IPTV services was evaluated by analyzing the actually transmitted IPTV data, estimating the quality of experience (QoE) of the videos, and deducing the quality measurements.

Quality measurement system for a wireless network based on the multimedia-data service

To catch up with the recent expansions of wireless platforms, the performance of quality management systems for wireless communication network services needs to be continuously improved; therefore, studies should be conducted on comprehensive quality indicators through the quality analyses that can represent the users’ quality of experience (QoE) of multimedia-data based wireless network services. In this paper, subjecting the five wireless Internet services (broadband LTE, LTE-A, LTE3G, WiBro, and WiFi), reliability verifications of quality measurement system platforms, algorithms, and software (S/W) that can assess the qualities of network sections and of the whole stations of service providers were proposed. In addition, to conduct reliability verifications, vehicles were facilitated to travel to the assessment areas and to perform the measurements more than 100 times in each assessment area (over 50 times per terminal).

Motion recognition technology based remote Taekwondo Poomsae evaluation system

This paper finally aims to make the public confident, fair and objective Taekwondo evaluation environment through development of publically certified remote Taekwondo Dan(Poom) promotion evaluation platform and, further vitalize Taekwondo and arrange the base for popularization and distribution of remote Taekwondo Poomsae promotion evaluation system. For this, this paper proposed the remote Poomsae evaluation system which may judge and evaluate the accuracy of motion comparing Taekwondo Poomsae motion of the evaluator to that of black belt player using the motion recognition technology which may recognize Taekwondo Poomsae motion through the trace of certain joint regions. In addition, the researcher investigated the accuracy of each algorithm for the date of relatively simple motions trained using the various motion recognition technologies. Also, the final establishment platform was proposed based on the system configuration, module architecture and the entire process according to the remote Taekwondo Poomsae evaluation platform to be implemented in future.

A Study on the Development of Plant Growth Monitoring System Using Plant Measurement Algorithms

Abstract In plants, factory automation systems, although most of the growth of plants by the state workforce is the restaurant to check manually. In this paper, we use two cameras to measure the plants developmental state has been studied. Plant measurement algorithm, the camera only affordable, reliable and simple system to get the data you can build a system.In this paper, the size of plants that plant growth in the plant to measure the efficient monitoring system has been developed. By utilizing this system, the size of the plant measured data required to maintain and manage accordingly, saving time and reducing costs and improving operational efficiency of plants, plant managers, the effect could be obtained by building the actual system the performance of the proposed system was confirmed. Key Words : Plants measurement algorithm, Monitoring, Camera * Corresponding Author : Moon-Taek ChoTel: +82-10-5414-7389 email: mtcho@mail.daewon.ac.kr접수일 12년 03월 29일 수정일 12년 05월 08일 게재확정일 12년 06월 07일

RFID-based scale model freight car system allowing realtime quantity checking

The barcode system currently used in the market has a weakness in that identification is only made when the barcode is visible. Unlike the barcode system, the RFID system uses radio frequency technology, allowing more accurate and faster identification of objects than the barcode system. RFID is a method to identify object data using radio frequency technology by attaching a tag to identification objects to be monitored. Active research has been conducted recently, and a lot of attempts have been made to introduce RFID technology in logistics and manufacturing sectors. This paper presents a method to check the accurate number of articles loaded in the freight car using RFID technology. The present research concerns the method in which the RFID reader and middleware is used to accurately and quickly count the number of RFID-tagged articles in real-time. When the tagged articles arrive at the reader area, the information read by the reader is delivered to the middleware. Then, the middleware identifies the number of tags, displaying the results to the user.

Growth analysis system for IT-based plant factory

In this paper, based on core technologies such as overcoming a place’s limitations, light that can substitute for the sunlight, automation, nutrient supply system and temperature, and intelligent situation recognition for solar power generation, geothermal HVAC (heating, ventilating, and air conditioning), a plant growth analysis system for vegetation factories was designed. The system is likely to improve the freshness of agricultural products through order and planned productions, to create new markets through the convergence of the IT and BT industries, and to promote convenience in farming and comfort in workspaces through automatic control, robot development, etc. In addition, the system is expected to offer opportunities for urban residents to experience and learn the whole process of a plant’s growth; to provide a leisurely life, such as a downtown oasis, to those who are tired of the dreary city life; to prevent environmental pollution through the effective use of recycled resources; and to produce and stably supply diverse agricultural products all year round, regardless of the weather. Also, we propose a medical condition measurement, including the water content of the plant leaf using the reflected light of the plant leaf in the visible light range NIR(near infrared) region. Proposed a result, the image coordinates (X, Y) for an analysis of a specific wavelength by the refractive index (Z) of a specific wavelength in a specific disease and plants having common characteristics and the refractive index distribution of the refractive index outside the selective wavelength of the plant leaf with respect to the plant were classified by using a specific disease and to predict the characteristics of a plant stress. Therefore, the visible light region and the absorption region due to the moisture including the NIR region 1.4 [μm] by utilizing the reflectance of the wavelength was measured by the change in the abnormal activity in normal metabolic activity and diseases of the plants leaves.

Integrated Plant Growth Measurement System Based on Intelligent Circumstances Recognition

In this paper, based on core technologies such as overcoming a place’s limitations, light that can substitute for the sunlight, automation, nutrient supply system and temperature, and intelligent situation recognition for solar power generation, geothermal HVAC (heating, ventilating, and air conditioning), a plant growth analysis system for vegetation factories was designed. The system is likely to improve the freshness of agricultural products through order and planned productions, to create new markets through the convergence of the IT and BT industries, and to promote convenience in farming and comfort in workspaces through automatic control, robot development, etc. In addition, the system is expected to offer opportunities for urban residents to experience and learn the whole process of a plant’s growth; to provide a leisurely life, such as a downtown oasis, to those who are tired of the dreary city life; to prevent environmental pollution through the effective use of recycled resources; and to produce and stably supply diverse agricultural products all year round, regardless of the weather.

The Development of Miniature Propelling System for Electric Brake at Extreme Low Speed

In this paper, how to stop a moment to experiment with stop function, electric brake type scale model propulsion system is designed and fabricated by control of the braking torque is proposed. Scale model system for motor-driven, inertial load, the structure of the load for the motor and the inverter system was constructed with two sets of converters, the actual range of the rotational speed of the vehicle DDM experiments to be able to. In Additional, observer to estimate the rotor position and speed of using resolver, and the pole at low speed, speed detection methods have been developed. As a result of this study, first, stop the moment Second, the reduction of braking torque, and how to initiate the operation of the air brake blending by using the braking, improve braking methods that only use the electric brake to stop brought.

A Study on Industry-University Collaboration Schemes for the Improvement of Urban Convergence Contents Industry

The cultural contents industry is related to the consumers’ sensibilities. At the turn of the 21st century, its importance to all industries gradually increased, and each country separated it as cultural technologies and fostered it intensively. The cultural contents industry creates added value in itself, but it can also create value as a new urban industry through convergence and integration in mutual association and exchanges. Thus, the growth potential of the cultural contents industry can be said to be very high.

A Study on the Tag Performance Test for International Standards Using RFID Emulator

RFID technology uses communication through the use of radio waves to transfer data between a reader and an electronic tag attached to an object for the purpose of identification and tracking. RFID technology can be applied to the various service areas such as, position determination technology, remote processing management and information exchange between objects by collecting, storing, processing, and tracing their informations from the tag attached to the objects using electronic wave by recognizing the information and environment of those objects. However, to revitalize these various services, it is important to test the RFID tag performance. But there are few instructions which have and hold the RFID emulator technology for organizing the RFID international test environment. Also there are not many manufacturing companies which recognize about the exact RFID test standard and requirements for the International Standards. In this paper, a construction of Tag Performance test environments and test methods are suggested which are required by EPCglobal or ISO/IEC. Details about RFID Tag performance test items proposed by ISO/IEC FDIS 18046-3 are explained, performed RFID Tag performance test through the performing test against each measured item, and draw a result for the RFID Tag performance of International Standards. On the basis of this research, it is desired to contribute to develop a great performing RFID Tag product through the RFID Tag performance test which comes up to the International Standards and construct its application system and facilitate a revitalization of the RFID services.