Abstract

• The antibacterial clothes dryer system is designed and constructed for killing the bacteria which make the bad smell in clothes. The system contains the clothes holder attached with motor dryer and ultraviolet (UV) lamp with a keypad lock. It is also designed to control the bacterial killing time and drying time of the wet clothes. The hardware of the lock system is designed and simulated by the Proteus 8.6 software and it is constructed by using PIC16F887 microcontroller, an 8 MHz crystal oscillator, 4×4 keypad, 16×2 LCD module, ultraviolet (UV) antibacterial Lamp, piezo sounder, relay, some active and passive components. The firmware for the lock system is written by Mikro Basic Pro programming language. The system permits to operate the UV antibacterial lamp for twenty minutes and motor dryer for thirty minutes as the instruction of the controlled program as soon as the keypad lock is unlocked. The presence of bacteria in clothes is observed by EC-1001-P-HLED Eco Blue microscope. The observation results show the antibacterial process in clothes is very effective by using ZW30S19W UV lamp.