• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
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• pp.84-86
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• 2005

The digital systems such as PLC or DCS have been applied to non-safety systems of nuclear power plants because of many difficulties in using analog systems. Nowadays, digital systems have been applied to safety systems of the plants such as reactor protection system. One of the main advantages of digital systems is applicability of automatic testing methods to the systems. The protection system requires high-reliability and high-availability because it shall minimize the propagation of abnormal or accident conditions of nuclear power plants. The calculation of reliability and availability of systems depends on the maintenance period of the system. In general, the maintenance period of the protection system is one-month in case of the manual test. However, the cycle of test can be shortened in several hours by using automatic periodic testing. The reliability and availability of the system is better when test period is shortened because the reliability and availability is inverse proportion to the test period. In this research, we developed the automatic periodic testing method for KNICS Reactor Protection System, which can test the system automatically without an operator or a tester. The automatic testing contained all functions of reaction protection systems from analog-to-digital conversion function of the bistable Processor to the coincident trip function of the coincident processor. By applying the automatic periodic testing to reaction system, the maintenance cost can be cut down and the reliability can be increased.

• 한국컴퓨터정보학회논문지
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• 제9권1호
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• pp.17-23
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• 2004

소프트웨어 자동 테스팅 도구를 이용하여 테스트 프로세스의 전부 또는 일부를 자동화함으로써 테스트시간의 단축과 테스트 비용을 줄일 수 있다 그러나 하나의 테스팅 도구를 이용하여 이질적인 컴퓨팅 환경에서 다양한 종류의 테스트 요구 사항을 모두 충족시킨다는 것은 현실적으로 불가능하다 본 논문에서는 소프트웨어 자동 테스팅 도구의 분류 기준을 제시하고, 이를 기반으로 상용화된 테스팅 도구들의 특성을 조사, 분석하여 테스팅 도구의 발전 로드맵을 제시함으로써 테스팅 도구들 상호간의 관계성 이해와 향후 테스팅 도구들의 발전 방향을 모색하고자 한다.

• 대한안전경영과학회지
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• 제17권1호
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• pp.289-300
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• 2015

According to the generalization of mobile device use in our life, the complexity and diversity of mobile applications are increased, and thus the importance of application test to find faults and errors quickly and easily before release grows. This paper reviews the current automatic testing methodologies for mobile device applications and their element technologies. Also, well-known commercial tools for automatic testing are surveyed and case studies of their recent industry applications in domestic and foreign countries are performed.

• 한국지반공학회논문집
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• 제23권11호
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• pp.27-37
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• 2007

지반의 전단파 속도 주상도를 도출하는데 있어 다운홀 기법은 하나의 시추공을 이용하고 간단한 지표면 가진원을 사용하므로 매우 경제적이다. 현장 실험을 더욱 용이하게 하고 양질의 신호를 획득하기 위해 자동 가진원을 개발하였다. 모터-스프링 타입으로 저렴하며 현장에서 다루기 매우 용이하다. 자동 가진원은 수동 가진원에 비하여 육체적 부담을 줄여주고 실험 소요 시간을 단축시킨다. 양질의 반복성이 있는 신호를 발생시켜 결과 해석에 유리하다. 자동 가진원과 더불어 적절한 감지기 시스템, 노트북 기반 신호 획득 장비 및 운용 프로그램과의 조합을 통해 반자동 다운홀 수행 시스템을 구축하였다. 수동 가진원과의 비교 검증 실험을 통해 제작된 자동 가진원의 장점들을 확인할 수 있었다. 또한, 구축된 수행 시스템의 현장 적용을 통해 용이하고 신뢰성 있는 기법 수행을 위해서 시스템을 자동화하는 것이 유리함을 알 수 있었다.

• 산업경영시스템학회지
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• 제22권49호
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• pp.135-142
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• 1999

The objective of this paper is to provide an automatic color image testing system capable of synthetically testing a color element like a color tone and a luminance for a color image displayed on the screen, using a CCD camera and a microprocess. The system consists of a CCD camera, a line conveyor, a camera driving part, a remocon, a remote sensing part, a display and a PC including a color vision board and a CPU board. By applying the system to a process, reliability for a testing result can be improved and the absolute criterion to judge a part can be made.

• 한국철도학회논문집
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• 제3권3호
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• pp.154-160
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• 2000

The automatic/driverless operation which are great important techniques in metro railway are required to increase higher safety, greater reliability, and transport capacity. To satisfy such demands, we must have the system design and testing technique for the railway system operation. These techniques are related to the onboard train control and communication systems which include TCMS(Train Control and Monitoring System), ATO(Automatic Train Operation), ATC(Automatic Train Control), and TWC(Train to Wayside Communication). These sub-systems must be interfacing with not only each others but also the signal system on the ground. We tested the train control system on Test line that has been developed on the basis of the standardized type EMU for korea railway systems. This test line which is located in Sangju, have been constructed for testing 7 ＆ 8 line of Seoul Metro railway.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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• pp.161-163
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• 1997

Heatcycle testing for aluminum connector is very important. But because of connecting or disconnecting the test circuit, measuring resistance is difficult. Also the previous measuring resistance instrument is analog type. So measuring method is difficult. And four measuring points for one test circuit cause difficulty in automation. In this paper we developed the automatic system for measuring resistance. Automation will allow more information to be gathered, which will lead to the connector aging process being better understood and controlled.

• 방재기술
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• 통권12호
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• pp.5-9
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• 1992

This reoprt is explained about test results of pressure operated switch for automatic fire extinguishing systems. It may include pressure operated Switch for automatic water supply control valves for use in automatic fire suppression system for fire protection service. The testing program was progressed devided by Two testing items, extermal oppearane test and performance test. The object of this report is present the problem which appear from the analysis of test results.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권9호
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• pp.4248-4270
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• 2018

This research aims at a new practical Intent fuzzing tool for detecting Intent vulnerabilities of Android apps causing the robustness problem. We proposed two new ideas. First, we designed an Intent specification language to describe the structure of Intent, which makes our Intent fuzz testing tool flexible. Second, we proposed an automatic tally method classifying unique failures. With the two ideas, we implemented an Intent fuzz testing tool called Hwacha, and evaluated it with 50 commercial Android apps. Our tool offers an arbitrary combination of automatic and manual Intent generators with executors such as ADB and JUnit due to the use of the Intent specification language. The automatic tally method excluded almost 80% of duplicate failures in our experiment, reducing efforts of testers very much in review of failures. The tool uncovered more than 400 unique failures including what is unknown so far. We also measured execution time for Intent fuzz testing, which has been rarely reported before. Our tool is practical because the whole procedure of fuzz testing is fully automatic and the tool is applicable to the large number of Android apps with no human intervention.

• JSTS:Journal of Semiconductor Technology and Science
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• 제13권3호
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• pp.259-262
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• 2013

Multi-site testing is considered as a solution to reduce test costs. This paper presents a new channel sharing architecture that enables I/O pins to share automatic test equipment (ATE) channels using simple circuitry such as tri-state buffers, AND gates, and multiple-input signature registers (MISR). The main advantage of the proposed architecture is that it is implemented on probe cards and does not require any additional circuitry on a target device under test (DUT). In addition, the proposed architecture can perform DC parametric testing of the DUT such as leakage testing, even if the different DUTs share the same ATE channels. The simulation results show that the proposed architecture is very efficient and is applicable to both wafer testing and package testing.