• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.54-55
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• 2006

IEC 61850 기반의 변전소 자동화 시스템 구축을 위하여 현재 여러 제조업체에서 IED 개발이 이루어지고 있다. IEC 61850-10에서는 개발된 IED가 IEC 61850 국제표준을 만족하는지 검증하고자 하는 적합성 검사(Conformance Testing)에 대하여 기술한다. 본 논문은 IEC 61850-10에서 제시하는 적합성 검사에 대하여 기술하며 이를 보완하기 위한 UCA IUG(International Users Group)의 역할에 대하여 언급한다.

• Journal of Institute of Control, Robotics and Systems
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• v.11 no.7
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• pp.595-601
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• 2005

A mobile robot system utilizing NDT (Non-Destructive Testing) method is designed and fabricated f3r automatic integrity evaluation of large sized industrial reservoirs and pipelines. The developed mobile robot can crawl over the outer surface of the industrial facilities even though the shape of the structures is various and unsymmetric. The robot detects defects such as pinholes, cracks and thickness reduction at the wall of the facilities using EMAT (Electro-Magnetic Acoustic Transducer). Image processing technology for weld line detection at the surface of the target and host programs including defect detecting algorithms are also developed. Automation of defect detection for these kinds of large facilities using mobile robots is helpful to prevent significant troubles of the structures without danger of human beings under harmful environment.

• Electronics and Telecommunications Trends
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• v.27 no.2
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• pp.120-128
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• 2012

인터넷 사용자와 데이터의 폭발적인 증가에 비례하여 네트워크 장비도 점차 대용량화 및 고도화되고 있으며, 이에 따라 장비개발 단계에서부터의 시험 요구사항 분석, 시험항목, 시험절차에 따른 반복시험을 수행하게 된다. 기존의 시험 패턴을 살펴보면 개발된 기본 패키지에 문제점 수정 또는 기능 추가 시 수동으로 모든 시험항목에 대해 시험을 수행해야 된다. 이러한 방식은 상당히 비효율적인 문제점을 안고 있으며, 개발 기간 단축과 비용절감을 위해서도 자동화 시험은 필수적이다. 공공기관 또는 기타 정부기관에 네트워크 장비를 납품하기 위해서는 BMT 또는 공인시험성적서가 점차 필수적으로 요구되고 있다. 본고에서는 네트워크 자동화 시험 현황과, 공인시험기관 인정 동향에 관하여 기술하고자 한다.

• Proceedings of the IEEK Conference
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• 1999.06a
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• pp.397-400
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• 1999

As the result of enhancement of CAD, Design Automation and manufacturing technology, it's on the increasing complexity, integration ratio, data signals, and pin count to IC chips. This brings about difficulties of testing, and incresing test time. Now One of the most cost-consuming procedure as integration ratio increases is the testing step. In this paper, we propose a new method, “Efficient TP(test point) assignment algorithm” using “input grouping”, This is helpful method to reducing test length without losing fault coverage. Experimental results show that proposed method reduces test length remarkably and doesn't miss fault coverage, with low hardware overhead Increasing.

• Journal of Multimedia Information System
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• v.2 no.4
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• pp.317-326
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• 2015

The paper deals with the analysis of the effectiveness of acoustic emission monitoring and diagnostics of engineering products. We discuss the results of the processing results of the field experiment to study the acoustic emission in the alloy and its welded joints in the presence of technological defects. We study the characteristics of the output of acoustic emission signals at different stages of elastic-plastic deformation of alloys. Analyzed acoustic chart and the output waveform of the acoustic emission for the different types of welds. Studies have shown the effectiveness of the Acoustic emission techniques and help improve the accuracy of non-destructive testing systems in problems of automation and control.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.2096-2100
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• 2008

This research project management, building systems to test the performance requirements of a user to accept the plan and schedule management, personnel management, and test results, and the status of testing and reporting procedures to handle the process of implementation of Java-based X - Under the Internet environment, the default network, remote process research and development program as a test automation, structure and each module of the software analysis, design, analysis and clean-up and structure of the modules, each module and the GUI structure, performance, testing integration DB The present system is to study the system.

• Journal of Korea Multimedia Society
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• v.24 no.5
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• pp.695-700
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• 2021

The Faster RCNN-based shellfish recognition algorithm is introduced for shellfish recognition studies that currently do not have any deep learning-based algorithms in a practical setting. The original feature extraction module is replaced by DenseNet, which fuses multi-level feature data and optimises the NMS algorithm, network depth and merging method; overcoming the omission of shellfish overlap, multiple shellfish and insufficient light, effectively solving the problem of low shellfish classification accuracy. In the complexifier test environment, the test accuracy was improved by nearly 4%. Higher testing accuracy was achieved compared to the original testing algorithm. This provides favourable technical support for future applications of the improved Faster RCNN approach to seafood quality classification.

• Smart Media Journal
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• v.13 no.2
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• pp.85-94
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• 2024

Artificial Intelligence of Things (AIoT), which combines AI and the Internet of Things (IoT), has recently gained popularity. Deep neural networks (DNNs) have achieved great success in many applications. Deploying complex AI models on embedded boards, nevertheless, may be challenging due to computational limitations or intelligent model complexity. This paper focuses on an AIoT-based system for smart sewing automation using edge devices. Our technique included developing a detection model and a decision tree for a sufficient testing scenario. YOLOv5 set the stage for our defective sewing stitches detection model, to detect anomalies and classify the sewing patterns. According to the experimental testing, the proposed approach achieved a perfect score with accuracy and F1score of 1.0, False Positive Rate (FPR), False Negative Rate (FNR) of 0, and a speed of 0.07 seconds with file size 2.43MB.

• Journal of the Korean Society for Precision Engineering
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• v.19 no.3
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• pp.88-94
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• 2002

Recently, the life cycle and the lead-time of a product are to be shortened in order to satisfy consumer's demand. It is thus important to reduce the time and cost in manufacturing trial products. Several technique have been developed and successfully commercialized in the market of RPM(Rapid Prototyping and Manufacturing). However, most commercial systems currently use resins or waxes as the raw materials. So, the limited mechanical strength for functional testing is regarded as an obstacle towards broader application of rapid prototyping techniques. To overcome these problems, high-speed machining technology is being investigated worldwide for rapid manufacturing and even for direct rapid tooling application. In this paper, some fundamental experiments and analyses are carried out to obtain the filling time, materials, method, and process parameters for HisRP(High-Speed RP) process. HisRP is a new RP process that is combined high-speed machining with automatic filling. In filling process, Bi58-Sn alloy is chosen as filling material because of the properties of low-melting point, low coefficient of thermal expansion and no harm to environment. Also the use of filling wire it if advantage since it needs simple and flexible mechanism. Then the rapid product, for example a skull, is manufactured for aluminum material by HisRP process with an automatic set-up device thor 4-faces machining.

• Journal of Software Engineering Society
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• v.29 no.2
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• pp.13-20
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• 2020

The exploratory test was introduced as a desirable test method due to its fast development cycle, but it is not actively adopted because documentation and analysis of the test range are required for application. On the other hand, keyword-based testing has been introduced as a way to save resources and facilitate maintenance, but it is difficult to plan tests in advance due to the large number of variables such as data, settings, interactions, sequence and timing. However, in keyword-based testing, you can create a test case based on keywords by presenting clear criteria and methods for creating keywords and applying the exploration testing process. In this paper, we propose a model that automates exploratory tests based on keywords. To verify the effectiveness, we compared the general keyword-based test(KBT) and keyword-based exploratory test(KBET), and compared with the exploratory normal test case(ETC) and keyword-based exploratory test(KBET).