THE DESIGN AND CONSTRUCTION OF AUTOMATIC 3 SPEED LEVEL MOBILE AIR FILTER CONTROLLED BY MICROCONTROLLER

Abstract

This paper presents the design and construction of automatic 3 speed level mobile air filter controlled by microcontroller at No.1 with 20% pulse width modulation, No.2 with 40% pulse width modulation and No.3 with 60% pulse width modulation to filter dust, germs and unwanted odors which consists of an air filter and a UV lamp, dust measurement equipment, exhaust fan and the Arduino Mega2560 microcontroller designed to have 2 operating modes: automatic mode and manual mode. For automatic mode: start when the dust content value is received from the GP2Y1010AU0F dust sensor module GP2Y1010AU0F capable of measuring PM 2.5 dust. The measured dust content is compared with the standard dust content that is within the safe range, no more than 25 micrograms per cubic meter when the dust content is more than 25 micrograms per cubic meter, the exhaust fan and UV lamp will start and stop when the dust content is less than 10 micrograms per cubic meter. For manual mode: the air purifier is activated as soon as the switch is turned on. This research uses a method to create dust by burning incense. From the test, it was found that the automatic mode, air filter will have a dust content of 0 micrograms per cubic meter after 10 minutes, compared to Xiaomi air filter, the dust content is 0 micrograms per cubic meter after 8 minutes, the manual mode, No.1 air filter has dust content of 0 micrograms per cubic meter after 14 minutes, No.2 air filter has a dust content of 0 micrograms per cubic meter after 10 minutes, No.3 air filter has dust content of 0 micrograms per cubic meter after 8 minutes, it cleans the air, free from dust, germs and unwanted odors which is very necessary for human beings, it can be used in areas such as households, educational institutions, establishments and the hospital as well.