Early warning and information on ultraviolet radiation (200-800 nm), Carbon monoxide gas and Temperature in open public areas using a microcontroller-based fuzzy logic method

Abstract

One of the most important gases that make up the ozone layer is carbon monoxide (CO) and to clean CO, Hydroxyl (OH) gas is required, if the CO content in the air has exceeded the limit it will cause the depletion of the ozone layer, the function of the ozone layer is as a barrier to ultraviolet radiation, Ultraviolet with a wavelength between 200-800 nanometer (nm) known as UVC to the surface of the earth will cause health problems in humans such as respiratory disorders, damage to the elastic fibers of the skin, skin cancer and eye disorders. In this research an early warning device will be made which is equipped with information on UVC, CO and CO, where the CO gas and temperature as parameters cause the depletion of the ozone layer so that UVC rays are exposed to the surface of the earth, this measuring instrument will be placed in an open public area where people activity can protect from UVC rays, the accuracy of a measuring instrument is determined by the method in data processing, this tool will use the Fuzzy Logic Method to impose limits on the error of input data errors that are non-linear in nature, as for a limit of 0.025 for UVC rays, CO and temperature, the data will be processed using a microcontroller with a bit divider for UVC, CO and Temperature of 1023 bits so that the measurement value can be a decimal number, to give a warning to people in open areas will use green LEDs as a safe indication, yellow LEDs as an indication alert and red LEDs as dangerous indications y The sound is accompanied by a buzzer while for the measurement values of UVC, CO and temperature will be displayed on the liquid crystal display (LCD). On the results of measurements of UVC, CO radiation and Temperature carried out from 10:30-18:00 West Indonesian Time (WIB) for seven days, the level of UVC radiation at 10:30-13:30 WIB on average of 175.14 nm, measurement for CO is carried out periodically every 10 minutes with an average concentration of 24.16 ppm and for the highest temperature of 31.81°C at 11:30-13:40 WIB.