Andrew Joewono, Rasional Sitepu, Yuliati, Peter R. Angka, I.A. Richard
Nowadays, almost in every public room there is particularly a spot for smokers and it is commonly called as smoking area. In order to keep the condition of smoking area comfortable, it is installed blowers that exhaust the smoke out of the room. However, the blower rotation is usually in constant speed whiteout considering the amount of smoke. Blower that rotates in constant speed will waste of electricity because the smoking area is not all of the time full of smoke. This paper presents a blower system using exhaust fan that rotation speed depends on the volume of smoke in the room. If the smoke increase then blower's speed automatically increase, and vice versa if the level of smoke decrease then the blower speed automatically decrease. The rotation speed is controlled by implementing gas sensor MQ2 and, Zero Crossing Detector, and Microcontroller Atmega8 technologies. The blower system has three different speed levels, in which the speed is proportionately linier with the smoke level in the area. Based on the tests, it is found that the system has triggering delay time. The longer the triggering delay occurs, the lower the rotation speed. © 2006-2017 Asian Research Publishing Network (ARPN).
Department of Electrical Engineering, Widya Mandala Catholic University Surabaya, Jl. Kalijudan, Surabaya, Indonesia