Design of temperature and humidity control system on oyster mushroom plant house based on Internet of Things (IoT)

Abstract

Oyster mushrooms are generally cultivated in kumbung covered by black colored plastic. This condition results in high temperatures and low humidity, so mushroom cultivation’s failure rate is very high. This research aimed to design and test temperature and humidity control systems’ performance based on the Internet of Things (IoT) on Oyster mushrooms kumbung. This study used an experimental method by controlling the microclimate inside the kumbung in Tanjung Karang Permai Sub-District, Sekarbela District, Mataram City. Research data were analyzed using the Microsoft Excel application. DHT 11 temperature sensor calibration on hygrometer with warm water showed a linear equation of y = 1.0402 x – 0.1423 and R2 = 0.9905, whereas using cold water was y = 1.081x – 1.7457 and R2 = 0.973. For the humidity calibration linear equation of y = 1.1203x – 8.3253 and R2 = 0.8606 was observed. Mean Absolute Percentage Error (MAPE) for warm water and cold water was 3,48% and 3.58%, respectively. In comparison, MAPE for RH was 0.082%. The temperature and humidity control system had been tested at a set point temperature of 28°C and humidity of 85%. The test results showed that mushrooms without a control system were yellowish, dry, and hard texture. Whereas with treatment, the fungus appeared white, wet, and soft texture. The number of mushrooms with treatments was higher and grew more evenly than without treatment. Based on these, it can be concluded that the control system could regulate microclimate inside mushroom kumbung, also successfully monitor it through mobile phones using the Blynk application.