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Developments in `smart' custom VLSI sensing for industrial automata

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2 Author(s)
Awcock, G.J. ; Brighton Univ, UK ; Rigby, M.T.

Visual guidance of robots for assembly tasks is the `Cinderella' of industrial machine vision applications, lagging far behind automated visual inspection, gauging and part recognition/orientation in achieving its potential within the industrial scene. A prototype binary edge-extracting (`smart') custom image sensor array, `Edge1', was developed previously at the University of Brighton. It featured a 32×32 array with a unique unit cell architecture, featuring a diode photo-site, and associated processing circuitry capable of performing binary edge detection within the focal plane of the sensor. It was implemented in a 2 micron ES2 CMOS process and featured 72 I/O pins because of its total lack of on-chip support circuitry. Thus, although the total die area was only 6.65 square mm, it required an 84 pin grid array package of around 26 mm square. A number of detail changes were suggested by testing this prototype and many of these have been tested in a 1.5 micron ES2 CMOS reimplementation of this design, `Edge 2'. Implemented in 1 micron ES2 CMOS it features a resolution of 64×64, as this is considered to be the optimum compromise between useful spatial resolution, speed and simplicity of data transfer and postsensor processing

Published in:

Image Processing and its Applications, 1995., Fifth International Conference on

Date of Conference:

4-6 Jul 1995