Abstract

In reducing the reduction of land for farming caused by the urbanization process, an alternative to farming using an indoor hydronic system is chosen. The features of this system are multitasking with the use of the RTOS scheduler and task management by implementing RTOS, a complex system that will be divided into modules. Tasks that can be carried out by hydroponic systems with the implementation of RTOS are modular and have high performance. This methodology of the research was carried out using the VDI 2206 approach to develop a nutrient control system in hydroponics with an RTOS system based on fuzzy logic. The freeRTOS system was chosen as an algorithm to perform multitasking such as reading sensor values and a decision-making system to control the working duration which is calculated using artificial intelligence fuzzy logic. From the test results of the sensors reading task, the percentage error for the TDS sensor is 0.11% and 0.02% for the pH sensor, besides that, it is also found that the program execution speed on RTOS is relatively faster than without RTOS.

Keywords: Fuzzy Logic, Multitasking, Multivariable Nutrients Control, RTOS