Design and Implementation of Roaster Control System Using Image Processing

Abstract

Indonesian coffee beans’ production significantly rises every year, but the quality of the coffee is poor especially for farmers’ home production. That’s why we need to increase the technology for it further, so the quality of their coffee product is better. One of the way to do that is to create a simple machine for farmers, yet able to compete with coffee factories. The technology that had been made for this same purpose still have quite some downside, mainly in the aspect of the roaster’s heat source. What we have till now is a roaster that use a stove to create the heat that it needs. That’s why it needs a lot of time to reach the temperature needed for the roasting process. The other downside is that it still use a conventional method in determining either the beans is already well cooked or not and that makes the effectivity and quality of the production not that good. That’s why we will create an automatic control system for the roaster to help increasing the effectivity and quality of the coffee production. The automatic control system we use is to control the heat of the roaster by using image processing to see either the beans already well cooked or not. The use of image processing is intended to assess the colour change of beans as the cooking process in progress.This would enables the system to shut the heat off. This technique would be time efficient and improve the quality.