Real-time Data Acquisition in the LED Grow-Hydroponic System using the Internet of Things (IoT)
Mahmud Achmad (a*), Ahmad Munir (a), Arif Rifan (a)

(a) Agricultural Engineering, Universitas Hasanuddin

* m.achmad1970[at]gmail.com

Abstract

Real-time data acquisition system is a solution for operating and maintaining a hydroponic system to become more effective in monitoring the system. The system can provide high level of convenience for growers so that direct observation is not needed necessarily. This study aims to utilize the Internet of Things (IoT) applications to get real-time data of the concentration of nutrition, pH, light intensity and height of water level in the system using the IoT. The usefulness of this research is providing information related to hydroponic practice tool in monitoring some variable conditions of the hydroponic-system environment. The first step was calibrating sensors which are TDS, pH, Bh1750, and JSN-SR04T by comparing recorder data and the direct measurement. The next step was designing a data acquisition system and testing the designed through sending data that were captured by sensors using the internet of things system. Data were received by a smartphone using the Blynk application. Calibration of TDS, the pH, the BH1750 and the JSN-SR04T sensors showed the coefficient of determination were 0.97, 0.97, 0.95 and 0.99, respectively. The IOT test results show that there is no missing data or all data were captured in very good category. Test results also found that sending data system has delayed less than 1 second, 167ms in average. This delayed time is categorised as good level (DT = 150 - 300 ms). The sensors are able to read all value of parameter in real-time appropriately in the hydroponic system. The data were sent fast to the data centre (data log) using internet of things with Telkomsel 4G provider.

Keywords: Hydroponic, Sensor, Internet of Things, Blynk

Topic: Digital farming