• Proceedings of the Korean Society of Machine Tool Engineers Conference
• /
• 2001.04a
• /
• pp.119-124
• /
• 2001

In this study, a vision system with image processing method have been introduced to find the edge radius of curvature. It was applied to inspect the edge quality of the deburring process product with brush grinding. Size of data was found to be critical in calculating the radius of curvature. Results using laser measurement system were compared.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2009.06a
• /
• pp.399-400
• /
• 2009

• Proceedings of the IEEK Conference
• /
• 2002.06c
• /
• pp.87-90
• /
• 2002

This paper has been studied a new approach using neural network to detect false laser marks. In the proposed approach, input images are segmented into R, G and B colors and implements mask areas respectively. And then average and variation values of the each mask area are extracted for the learning process to minimize input nodes. Using this technique, the new input data is obtained and implemented to the back-propagation algorithm using multi layer perception. This paper reduces the computational complexity necessary and shows better effectiveness to inspect false laser marks.

• Journal of Korean Institute of Industrial Engineers
• /
• v.11 no.2
• /
• pp.19-27
• /
• 1985

Optimal numbers of repeat inspections are obtained for a single inspector who has a fixed probability of detecting a nonconforming item on each inspection and will continue to inspect until further inspection is not warranted when comparing the expected increase of total gain with the inspection cost. It is assumed that the detection probability decreases as the number of repeat inspections increases, and that the lot to be inspected contains an unknown but Poisson distributed number of nonconforming items.

• Journal of the Korean Professional Engineers Association
• /
• v.39 no.1
• /
• pp.50-53
• /
• 2006

I forecasted how much IT and ubiquitous technology will grow after 20 years. First of all, 1 think the goal of ubiquitous technology and relative main technology is our life. 1 will give examples of ubiquitous technology that affects travel, school and family life and how much it has changed. Lastly I will check the problems and securities in ubiquitous technology. By that time, we will have meaningful time to inspect the change of future technology.

• 제어로봇시스템학회:학술대회논문집
• /
• 2000.10a
• /
• pp.268-268
• /
• 2000

In the inspection of the reactor pressure vessel using an underwater mobile robot, we developed a new bi-directional guidance control scheme between an underwater mobile robot and a laser pointer. We imposed fanning to the inclinometer embedded in the mobile robot to improve its transient response, and used heuristic control scheme to reduce accidents when the laser pointer losts the mobile robot. We implemented these algorithms to our reactor vessel inspect ion system and performed a series of experiments.

• 제어로봇시스템학회:학술대회논문집
• /
• 2000.10a
• /
• pp.288-288
• /
• 2000

Reactor vessel is one of the most important equipment with regard to the safety of nuclear power plant. Thus nuclear regulation requires its periodical examination by certified inspection experts. Conventional reactor inspection machines are obsolete, hard to handle, and very expensive. To solve these problems we developed robotic reactor vessel inspection system which are small, easy to use for inspection, cost effective, and convenient in operation. This paper describes the main features of Main Control System which is one part of robotic inspection equipment we developed.

• Journal of Korean Elementary Science Education
• /
• v.19 no.2
• /
• pp.43-56
• /
• 2000

Main feature of portfolio assessments is the integration between assessment and instruction. Based on this feature, we developed portfolio assessment regarding feedback fitted into elementary school science classes. The portfolio assessment model is consisted with three steps; the plan of assessment, the practice of portfolio assessment, and the application of assessment result. In the last step, feedbacks of the assessment result were represented to students. From this model, we inspect the possibility of application in elementary school science.

• Proceedings of the Korea Society for Industrial Systems Conference
• /
• 2003.11a
• /
• pp.135-144
• /
• 2003

In this paper, the implementation techniques of intelligent nuclear material surveillance system based on the SOM(Self Organized Mapping) was described. Unattended continuous surveillance systems for nuclear facility result in large amounts of data, which require much time and effort to inspect. Therefore, it is necessary to develop system that automatically pinpoints and diagnoses the anomalies from data. In this regards, this paper presents a novel concept of a continuous surveillance system that integrates visual image and radiation data by the use of neural networks based on self-organized feature mapping

• 제어로봇시스템학회:학술대회논문집
• /
• 2001.10a
• /
• pp.53.4-53
• /
• 2001

This paper described about the system which can be inspect work roll surface for deciding a milling schedule and roll changing at hot strip mill in POSCO. Developed system consists of CCD camera, Xenon lamp with fiber bundle and mechanical control part. The water probe build up water pole between head of probe and roll surface to acquisite a good image from a work roll surface under the bad environment with steam, cooling water and high temperature. This system is possible to monitor a work roll surface of about 12${\times}$9mm. We have shown the validation of the developed system which can monitor the evolution of degradation on work roll surface.