Design and build an IoT system for temperature and humidity observation using DHT 22 with ThingSpeak

Abstract

In a study conducted in recent years, it was found that atmospheric conditions such as temperature and humidity values greatly affect the climatic conditions of a region. This real-time temperature and humidity monitoring system is very useful and can be used in various regions. By using IoT, monitoring can be done in real-time. Temperature and humidity can use DHT 22 linked to ESP 32 and the data is stored and displayed in ThingSpeak. The trial of the monitoring tool was carried out for more than 31 hours and obtained 6920 data. At the time of the experiment the monitoring system worked well. At the time of observation for temperature the maximum value is 32.4 ̊C, the minimum value is 28.1 ̊C, the mean is 29.75621387283237 ̊C, and the standard deviation is 3.587911994653761 and for humidity the maximum value is 81.4%, the minimum value is 63.6%, the mean is 72.6355404624 and the standard deviation is 3.5879112. From the experiment, it was also found that the temperature value was inversely proportional to the humidity and when it was going to rain the temperature value went up while the humidity went down and when it rained the temperature went up while the temperature went down.Dalam penelitian yang dilakukan beberapa tahun terakhir ini, ditemukan bahwa kondisi atmosfer seperti nilai suhu dan kelembaban sangat mempengaruhi kondisi iklim suatu wilayah. Sistem monitoring suhu dan kelembaban secara real time ini sangat bermanfaat dan dapat digunakan di berbagai wilayah. Dengan menggunakan IoT, monitoring dapat dilakukan secara real time. Suhu dan kelembaban dapat menggunakan DHT 22 yang dihubungkan dengan ESP 32 dan data disimpan serta ditampilkan di ThingSpeak. Uji coba alat monitoring ini dilakukan selama lebih dari 31 jam dan diperoleh 6920 data. Pada saat percobaan sistem monitoring bekerja dengan baik. Pada saat pengamatan untuk suhu nilai maksimumnya 32,4 °C, nilai minimumnya 28,1 °C, nilai rata-ratanya 29,75621387283237 °C, dan simpangan bakunya 3,587911994653761 dan untuk kelembaban nilai maksimumnya 81,4%, nilai minimumnya 63,6%, nilai rata-ratanya 72,6355404624 dan simpangan bakunya 3,5879112. Dari percobaan tersebut juga didapatkan bahwa nilai suhu berbanding terbalik dengan kelembaban dan pada saat akan turun hujan nilai suhunya naik sedangkan kelembabannya turun dan pada saat turun hujan suhunya naik sedangkan suhunya turun.