ANALOG_VOLTAGE_CAMERA_IMAGE_TRACKER

Published:2009/7/11 2:20:00 Author:May | From:SeekIC

By using a low-cost RS-170 camera and this circuit, a voltage that trades the position of an object in the field of view of a camera is generated. IC2A and IC2B form a valid video gate that holds IC3 in reset during the internal vertical blanking to prevent false interpretation of the UB1 as black video. IC4 is a black level detector. The circuit tests for a black object in the middle of each video line. IC5 latches the comparator's output and produces a square wave whose duty cycle depends on where the black level is detected in the video field. R1. C1. and IC6 integrate and buffer the analog output voltage.



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