Paper Title:
The Research of the PCB Location Based on Three Layers of MARK Point
  Abstract

In order to reduce the position error produced by single board assembly and partial uneven surface in automated optical inspection, a new position method based on three layers of MARK point is developed. the first layer is the whole board alignment which compensate the position error of the PCB loading process, the second layer is the single board alignment which compensate the position error of the single board assembly, the last layer is the partial FOV(field of view) alignment which compensate the position error of the partial uneven surface. The experiment result proved the proposed position method improved the position accuracy obviously.

  Info
Periodical
Advanced Materials Research (Volumes 317-319)
Chapter
Machine Vision
Edited by
Xin Chen
Pages
869-876
DOI
10.4028/www.scientific.net/AMR.317-319.869
Citation
H. Wu, X. M. Zhang, Y. C. Kuang, "The Research of the PCB Location Based on Three Layers of MARK Point", Advanced Materials Research, Vols. 317-319, pp. 869-876, 2011
Online since
August 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Shi Wei Liu, Jun Lan Li, Xing Yu Zhao, Da Wei Zhang
Abstract:In order to improve the speed and accuracy of vision alignment for IC packaging, genetic algorithm and Otsu method are applied to vision...
4177
Authors: Bo Yang, Ji An Duan
Material Design of Computer Aided
Abstract:This paper describes a new active optical alignment method that is developed for the alignment of optical fibers to planar waveguide in order...
1229
Authors: Jian Li Li, Jian Cheng Fang, Mai Ying Zhong, Bai Qi Liu
Chapter 3: Advanced Test and Measurement
Abstract:The gyro drift is a crucial factor for initial orientation error and measurement error of SIMS (Strapdown Inertial Measurement System)....
696
Authors: Sheng Bao, Fu Zhang, Xi Zhang
Abstract:The random errors exist in measuring with touch trigger probe. These errors are directly introduced into workpiece coordinate system with...
11
Authors: Yi Feng Zhu, Lin Tao Yu, Lei Shi, Rui Rui Shang
III. Advanced Design, Modelling, Analysis Science in Manufacturing Technologies
Abstract:In the space laser communications, Information transmission by atmospheric turbulence and background light and other atmospheric interference...
1164