thavamaran
Member level 4
light intensity and distance
Hi, im Thavamaran and currently in final year of my degree, so im using TCS230, its a CMOS color sensor whereby im doing various types of test. TCS230 output is frequency and its digital. so i was doing a test recently whereby i place my sensor about +-5cm from a surface, which the surface consists of a particular color paper.
So from 5cm when i slowly decrease to 4 cm ,3 cm and so on till i stick my sensor to the paper, the output frequency was slowly decreasing when the distance decrease. and when i increase my distance from 5cm, like say 6 cm and onwards, the frequency output increase.
Can i know why its characteristic is like that? what is the relationship between light intensity and distance?
PS: the illumination for the sensor was the fluorescent light in my lab, no external illumination.
Hi, im Thavamaran and currently in final year of my degree, so im using TCS230, its a CMOS color sensor whereby im doing various types of test. TCS230 output is frequency and its digital. so i was doing a test recently whereby i place my sensor about +-5cm from a surface, which the surface consists of a particular color paper.
So from 5cm when i slowly decrease to 4 cm ,3 cm and so on till i stick my sensor to the paper, the output frequency was slowly decreasing when the distance decrease. and when i increase my distance from 5cm, like say 6 cm and onwards, the frequency output increase.
Can i know why its characteristic is like that? what is the relationship between light intensity and distance?
PS: the illumination for the sensor was the fluorescent light in my lab, no external illumination.