A VLSI-based system for tracking visual stimuli

Author

DeWeerth, Stephen P.

Author_Institution

Comput. & Neural Syst., California Inst. of Technol., Pasadena, CA, USA

fYear

1991

fDate

9-11 Apr 1991

Firstpage

1336

Abstract

An electromechanical system that follows a bright visual stimulus is presented. At the core of this system is an analog VLSI chip that incorporates photosensitive elements and computational circuitry. The circuitry converts a focused 1D visual imager into a bidirectional motor signal that is encoded as a pair of pulse trains. These outputs are amplified and are used to drive a mechanical motor system that `closes the loop´ around the circuitry by moving the chip to follow the stimulus. The circuitry has been incorporated into a wheeled vehicle that follows a light source

Keywords

VLSI; computerised picture processing; image sensors; linear integrated circuits; mobile robots; photodetectors; position control; position measurement; signal processing equipment; tracking systems; vehicles; analog VLSI chip; bidirectional motor signal; bright visual stimulus; computational circuitry; electromechanical system; focused 1D visual imager; mechanical motor system; photosensitive elements; pulse train pair; visual stimulus tracking; wheeled vehicle; Analog computers; Control systems; Electromechanical systems; Encoding; Focusing; Image converters; Pulse circuits; Sensor arrays; Signal processing; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics and Automation, 1991. Proceedings., 1991 IEEE International Conference on

Conference_Location

Sacramento, CA

Print_ISBN

0-8186-2163-X

Type

conf

DOI

10.1109/ROBOT.1991.131798

Filename

131798