Low Pass Filter Applied to Color Sensor of Line Follower Robot

Abstract

We propose a method for reducing the light noise of color sensor by integrating the Low Pass Filter (LPF) on color sensors of line trace robot. The proposed method is able to reduce the blinking of the fluorescent lamp’s noise and smooth variation in the color sensor. The light noise reduction is composed of two steps: pre-acquiring color sensor values (white standard value, black standard value) at various points of the course and normalizing sensor value from various points in the course.