• 한국정보전자통신기술학회논문지
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• 제16권5호
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• pp.230-238
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• 2023

식품제조 중소기업들은 원물 투입부터 최종 팔렛타이징까지 대부분 노동집약적이고 수작업으로 구성되어 있다. 최근 로봇과 센서 데이터 기술요소 적용으로 스마트화 디지털화로 변화하는 추세이다. 본 연구에서는 식품제조기업에서 적용 설비 역량보다 작업자가 속도를 따라가지 못하는 반복작업 공정 2가지를 선정하였으며, 이를 3D 시뮬레이션을 활용하여 개선 효과성을 규명하고자 한다. 꼬치 조립 후 작업자들이 계량 후 포장하는 공정과 무작위로 공급되는 냉동식품류를 계량-내·외포장-팔렛타이징 일괄 수작업 공정 2개를 선정하였다. 가동률, 생산량, 투입 작업자 수를 검증 지표로 선정하였다. 3D 개선 공정 시뮬레이션 결과 생산량은 각각 기존보다 13.5%, 56.8% 증가했으며, 특히 팔렛타이징 로봇 적용 공정에서 높은 효과성을 보였다. 두 공정 모두 가동률과 투입인력 수는 감소함에 따라 작업자에게 피로도가 높은 공정을 로봇으로 대체 적용할 수 있어 작업 과부하를 개선할 수 있는 결과를 나타냈다. 본 연구 결과를 바탕으로 3D 시뮬레이션을 활용하여 식품계량 및 포정 공정에 로봇을 도입함으로써 개선된 공정의 성능을 정량적으로 사전 검증의 가능성을 확인할 수 있었다.

• Archives of Plastic Surgery
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• 제36권6호
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• pp.691-701
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• 2009

Purpose: Deviations of arterial palmar arches in the hand can be explained on the embryological basis. The purpose of this study was to provide new information about palmar arches through cadaver's dissection. The values of the location and diameter in these vessels were analyzed in order to support anatomical research and clinical correlation in the hand. Methods: The present report is based on an analysis of dissections of fifty - three hands carried out in the laboratory of gross anatomy. A reference line was established on the distal wrist crease to serve as the X coordinate and a perpendicular line drawn through the midpoint between middle and ring fingers, which served as the Y coordinate. The coordinates of the x and y values were measured by a digimatic caliper, and statistically analyzed with Student's t - test. Results: Complete superficial palmar archs were seen in 96.2 % of specimens. In the most common type of males, the superficial arch was formed only by the ulnar artery. In the most common type of females, the superficial arch was formed anastomosis between the radial artery and the ulnar artery. The average length of the superficial and deep palmar arch is $110.3{\pm}33.0mm$ and $67.9{\pm}14.0mm$ respectively. Regarding the superficial palmar arch, ulnar artery starts $-16.1{\pm}5.1mm$ on X - line, and $2.5{\pm}24.5mm$ on Y - line. Radial artery appears on palmar side $7.7{\pm}3.2mm$ on X - line, and $20.9{\pm}10.9mm$ on Y - line. But radial artery starts on $6.3{\pm}3.6mm$ on X - line, and $3.4{\pm}5.1mm$ on Y - line. Digital arteries of superficial palmar arch starts on $6.1{\pm}3.7mm$, $33.9{\pm}8.8mm$ on index finger, $1.8{\pm}3.4mm$, $40.1{\pm}7.3mm$ on middle finger, $-3.2{\pm}4.9mm$, $42.6{\pm}7.0mm$ on ring finger, and $-8.9{\pm}5.1mm$, $42.5{\pm}80mm$ on little finger in respective X and Y coordinates. Radial artery of deep palmar arches measured at the palmar side perforating from the dorsum of hand. It's coordinates were $9.7{\pm}4.8mm$ on X - line, $21.7{\pm}10.2mm$ on Y - line. Ulnar artery was measured at hypothenar area, and it's coordinates were $-20.4{\pm}6.3mm$ on X - line, and $30.6{\pm}7.4mm$ on Y - line. Conclusions: Anatomically superficial palmar arch can be divided into a complete and an incomplete type. Each of them can be subdivided into 4 types. The deep palmar arch is less variable than the superficial palmar arch. We believe these values of the study will be used for the vascular surgery of the hand using the endoscope and robot in the future.