The Toilet Paper Automatic Exchanging System with Detecting Stock Function

In this paper, we discuss the toilet paper automatic exchanging system that we have developed and improvement. This system can exchange toilet paper in automatically. The system measures color of the toilet paper and its core by using the color sensor. The system judges the toilet paper is already used up or not based on measured RGB value. If the system judged the toilet paper is already used up, the system exchanges toilet paper. This system also can stock some spare toilet paper in the back of the system. The system measures the number of spare toilet paper and sends its data to web server. The toilet administrator or cleaning company can check the rest of toilet spare toilet paper through web browser. Therefore, the administrator can provide toilet paper in efficiently. By using developed system, toilet administrator or cleaning company replenishes toilet paper only and user who uses the restroom doesn't need to exchange toilet paper.