• Title/Summary/Keyword: 주사경로

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The Study on Reduction of Scanning Path Build Time According to Control of STL file Slicing Height - Application of Small Jewellery (STL File 슬라이싱 높이 조정에 따른 주사경로 생성시간 저감에 관한 연구 - 소형 보석류에 적용)

  • Kim Tae Ho;Kim Min Ju;Lee Seung Soo;Jeon Eon Chan
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.12
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    • pp.205-210
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    • 2005
  • This paper addresses the correlation between the change of file size and the scanning path build time by the slicing height of STL file. Though the study about STL file has been achieved quite actively scanning path build time using STL file is not investigated so much to be satisfied. The file size depends on the number of polygon created by the slicing height specified. And this number of polygons increases in a regular rate. The correlation between the number of polygons and the scanning path build time is examined and verified.

The study on the reducing of scanning path creation time using SLC file. (SLC파일을 이용한 주사경로 생성 시간 단축에 관한 연구)

  • 김태호;장성규;박정보;이준희;전언찬
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.114-118
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    • 2004
  • This paper is compared the build time of scanning path as to laminate height of the SLC and STL file. The STL file improve the surface roughness according to slicing height. But it have the fault spending long time to the creation of scanning path by being lower slicing height. So we proposed the SLC file to improve this fault. Therefore this paper showed to the build time of scanning path by the increase of peace using the jewellery model.

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Study on the Laser Scanning Path Creation Time of Rapid prototype Using Jewellery Data (쥬얼리 데이터를 이용한 쾌속조형장치의 주사경로 생성 시간에 관한 연구)

  • 한민식;김태호;김민주;이준희;전언찬
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.190-193
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    • 2004
  • This paper presents studies on the creation time of scanning path using rapid prototype device. In the case of Jewellery, it needs to take time too much at the whole process of rapid prototype in accordance with heigh of the multi-layered. When increases the number of polygon by heigh of the Multi-layered, it has proper influence on the creation time of scanning path. Therefore, we can get the spending time and the number of polygon for the creation during increase the heigh of the multi-layered. These values are showed by the quantitative. We try to analyze relation between these and heigh of the multi-layered.

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A Study on Generation of the Advanced Laser Scanning Path for Stereolithography using Voronoi Diagrams (Voronoi Diagram 을 이용한 Stereo;ithography 의 향상된 레이져 주사경로 생성에 관한 연구)

  • 이기현;최홍태;이석희
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.405-409
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    • 1997
  • Voronoi diagrams are applied in varios field such as NC toolpath generation, VLSI design and robot path planning because of their geometric charcteristics. In this paper, Voronoi diagrams are introduced on polygon constructed by line segments only and with constant offset. Bisector curves for two arbitrary objects, which is the combination of line segment and arc, are defined as parametric fuction where the parameter is used as offset. Offset curves are applied on the generation of laser scanning path for the stereolithography and shows a good result from several examples.

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The feature of scanning path algorithm shown at natural visual search activities of space user (공간사용자의 본능적 시선탐색활동에 나타난 주사경로 알고리즘 특성)

  • Kim, Jong-Ha;Kim, Ju-Yeon
    • Science of Emotion and Sensibility
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    • v.17 no.2
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    • pp.111-122
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    • 2014
  • This study has analyzed the scanning path algorithm shown at the process of exploring spatial information through an observation experiment with the object of lobby in subway station. In the estimation of observation time by section, the frequency of scanning type was found to increase as the observation time got longer, which makes it possible that the longer the observation lasts the more the observation interruptions occur. In addition, the observation slipped out of the range of imaging when any fatigue was caused from the observation or the more active exploration took place. Furthermore, when the trend line was employed for the examination of the changes to the scanning type by time section, "concentration" "diagonal or vertical" showed a sharp and a gentle increases along with the increase of time section respectively, while "circulation. combination, horizontal" showed a reduction. The observation data of the subjects observing a space include various visual information. The analysis of the scanning type found at "attention concentration" enabled to draw this significant conclusion. The features of increase and decrease of scanning types can be a fundamental data for understanding the scanning tendency by time.

Generation of Laser Scan Path Considering Resin Solidification Phenomenon in Micro-stereolithography Technology (마이크로 광 조형기술에서 수지경화현상을 고려한 레이저 주사경로 생성)

  • 조윤형;조동우
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.1037-1040
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    • 2002
  • In micro-stereolithography technology, fabrication conditions that include laser power, laser scan speed, laser scan pitch, and material property of photopolymer such as penetration depth and critical exposure are considered as major process variables. But the existing scan path generation methods based only on CAD model have not taken them into account, which has resulted in cross-section dimension of low accuracy. Thus, to enhance cross-section dimensional accuracy, the physical resin solidification n phenomena should be reflected in laser scan path generation and stage operating code. In this paper, multi-line experiments based on single line solidification model are performed. And the method for improving cross-section dimensional accuracy is presented, which is to apply the database based on experimental results to laser scan path generation.

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A Study on Built-In Self Test for Boards with Multiple Scan Paths (다중 주사 경로 회로 기판을 위한 내장된 자체 테스트 기법의 연구)

  • Kim, Hyun-Jin;Shin, Jong-Chul;Yim, Yong-Tae;Kang, Sung-Ho
    • Journal of the Korean Institute of Telematics and Electronics C
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    • v.36C no.2
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    • pp.14-25
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    • 1999
  • The IEEE standard 1149.1, which was proposed to increase the observability and the controllability in I/O pins, makes it possible the board level testing. In the boundary-scan environments, many shift operations are required due to their serial nature. This increases the test application time and the test application costs. To reduce the test application time, the method based on the parallel opereational multiple scan paths was proposed, but this requires the additional I/O pins and the internal wires. Moreover, it is difficult to make the designs in conformity to the IEEE standard 1149.1 since the standard does not support the parallel operation of data shifts on the scan paths. In this paper, the multiple scan path access algorithm which controls two scan paths simultaneously with one test bus is proposed. Based on the new algorithm, the new algorithm, the new board level BIST architecture which has a relatively small area overhead is developed. The new BIST architecture can reduce the test application time since it can shift the test patterns and the test responses of two scan paths at a time. In addition, it can reduce the costs for the test pattern generation and the test response analysis.

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