Pan, Tzu-Hui
YiLan Junior High School
E-mail:isa324574@gmail.com
Huang, Chao-Ming
Jhong-Shan Elementary School Teacher
Abstract
This study tried to explore and compare the performance of color sensors and optical sensors in different situations. Due to differences in their working principles, their performance on detectable targets is different. This study tried to reveal the performance from 3 aspects, including different colors, lumens and irradiation distances. Research results show that the higher the lumens, the lower the accuracy and precision. High-lumen light sources, due to their large divergence and uneven wavelength distribution, may cause the stability and consistency of the light beam to decrease, thereby affecting its accuracy and precision. The spectral distribution of the light source also affects the performance of the color sensor. Some light sources may be stronger at certain wavelengths and weaker at other wavelengths, which may cause the color sensor to be less accurate for certain colors. The farther the sensor is from the target, the lower the accuracy but the higher the accuracy. When the color sensor is farther away from the target, the accuracy may decrease due to the following reasons, but the accuracy will increase. When light passes through dust, fog and other substances in the air, it will be scattered and produce color deviation. When the sensor is farther away from the target, the distance in the air that the light passes through increases, which increases the possibility of color distortion and affects accuracy.
Keywords :color sensor, optical sensor, spectral distribution