• 한국항행학회논문지
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• 제15권6호
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• pp.1173-1179
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• 2011

본 논문에서는 광역의료서비스인 항공응급의료체계에서 요구되는 심전도, 혈압등과 같은 의료신호를 저장하기 위해 표준방식인 부호화기를 구현하기 위한 파서를 설계한다. 부호화기는 MDER에 기초하여 테그에 의해 파형의 정보를 부호화하고 이를 저장하기 위한 방법으로서, 이를 구현하기 위해서는 각 테그의 적용 범위를 고려하여 부호화기의 파서 구조를 설계하여야 한다. 연구에서는 테그간의 영향을 미치는 범위를 고려하여 루트속성을 갖도록 한 부호화기 파서의 구조를 설계한다. 설계된 파서는 구현을 통해 다른 구조들과 비교한다.

• 한국멀티미디어학회논문지
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• 제19권3호
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• pp.595-602
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• 2016

With the evolution and development of many kinds of healthcare devices and techniques, u-health standards have emerged as a major issue. Yet, most legacy medical devices and systems are still being used without deployment of the standards. Therefore, it is required to support backward compatibility for u-health standard-compliant systems to communicate with legacy non-standard medical and healthcare devices. This paper proposes a new scheme to support backward compatibility of IEEE 11073 system by adding a codec module to IEEE 11073 agent. The codec converts data sent by non-standard health devices to IEEE 11073 MDER data. Plus, we implemented the proposed IEEE 11073 agent with an Intel Edison board which is one of popular open source H/W platforms. The IEEE 11073 manager of the proposed system can monitor and control legacy non-standard devices through the proposed agent system. In our experimental results, we examined the proposed system can support interoperability between u-health standard and non-standard devices and contribute to the growth and expansion of u-health services.

• Journal of Welding and Joining
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• 제15권1호
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• pp.66-80
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• 1997

This paper describes a newly developed arc-sensing algorithm of seam-tracking for FCA W (flux-cored arc welding) horizontal fillet welding. In this algorithm, arc current and the Weighted-Are-Current (WAC) are used to adjust the position of a weld torch in directions of bead throat and weaving, respectively. The WAC, which is newly devised in this study, means that arc current in the vicinity of weaving end is more emphasized than that in the center of weaving. The reason of this is because there usually exists much noise in the center of weaving due to abrupt change of arc length in case some empty gaps exist in a fillet joint Variance analysis was performed in order to check the effect of weld parameters on arc current and the WAC. As a result, the relationships between tip-to-workpiece distance and arc current, and between weaving offset and the WAC were established.To check "the validity of the algorithm, seam-tracking experiments were performed ;mder various welding condition. The result of experiments showed a satisfactory tracking performance in the presence of empty gaps in a horizontal fillet joint.et joint.