RANCANG BANGUN SISTEM KONTROL SUHU RUANGAN BERBASIS MIKROKONTROLER AT89S51

Abstract

Has been done design and construction of room temperature controller system using fans has been done. This system can be used to control the temperature in a room like simple offices and auditorium that not use air conditioner (AC). This system consist of hardware and software.The hardware consist of temperature censor LM35, Op-Amp LM35, ADC0804, sevent segment, and fan. The software use assembly Reads 51 programming. This system works like ordinary thermometer, that measure room temperature in celcius scale. Room temperature will be read by censor, then gives output voltage that strengthened by op-amp where will be changed into digital data by ADC0804. This digital data will be processed by microcontroller and displayed in sevent segment which then will followed turning on the fan. This device has been realized and it can control room temperature so that can keep on the room temperature normally.