SISTEM MONITORING GAS AMONIA DAN KADAR BERSIH UDARA PADA KANDANG SAPI PERAH DENGAN MENGGUNAKAN PROTOKOL KOMUNIKASI MQTT DAN ALGORITMA RULE BASED SYSTEM

Cattle farming is a very important factor in meeting human needs for food, in dairy farming there are many benefits that can be obtained such as milk and meat. One dangerous example for cattle and breeders is the widespread exposure of ammonia gas to the environment of dairy cages and farmer homes. Ammonia gas itself is produced from cow dung that settles too long in a room, if cow dung is not fast to be cleaned then the effects can pollute the environment and have an impact on diseases that can attack humans and dairy cows. In addition to the dangers posed by ammonia gas hazards can also be generated from the accumulation of carbon monoxide gas produced from the grass chopper machines belonging to farmers in the enclosure area, this also has a negative impact on humans where carbon monoxide can have an effect on breathing and can endanger the livestock's life itself. With the advancement of technology, a monitoring model of ammonia, gas monoxide and temperature of humidity was made using Arduino Uno devices, MQ-7 sensors, MQ-135 and DHT11 sensors in the dairy cow enclosure area using MQTT and rule based system algorithms. This tool will help farmers to monitor the condition of the dairy cage area. This tool also has buzzer and blower action, the buzzer function itself as a warning if the condition of the enclosure area has been exposed to ammonia and monoxide gas then the buzzer will sound. While the blower is used as an air neutralizer so that harmful gases do not enter the farmer's room and stabilize the humidity temperature of the dairy cow enclosure area. The RSSI test results indicate that the distance influencing the data transmission the further the distance will affect the signal and the delay in time will occur in the data transmissio