The control system for the nutrition concentration of hydroponic using web server

Abstract

This research was conducted to realize a nutrient solution concentration control system using web interface monitoring. The hydroponic system only relies on nutrient solutions whose nutrient levels must be maintained to anticipate the increase in acidic acid levels of the nutrient solutions. The provision of monitoring and recording changes in hydroponic system nutrition is very helpful in maintaining the quality of hydroponic agricultural production. The provision of data from electrical power measurements needs to be supported by information technology, especially remote data measurement technology. This remote data monitoring uses a wireless network system using a TDS (Total Dissolved Solids) sensor, Arduino DUE microcontroller, WiFi module and internet connection for the observation process. The TDS sensor used previously was characterized and calibrated. The data obtained by the sensor is used to exercise control before sending it to the thingspeak.com channel to be recorded and displayed in realtime. In testing the sensor TDS meter error of 2.88%. The results of the test for 2 hours obtained the results of the control system can increase the nutritional PPM from 213 PPM to 451 PPM within 30 seconds with a nutrient enhancer sample of 779 PPM, and decrease from 779 PPM to 431 PPM within 70 seconds with a water-enhancing sample of 213 PPM for the 445 PPM set point. In the second test result for 2 hours, the control system results can increase the nutritional PPM from 215 PPM to 814 PPM within 30 seconds with a nutrient enhancer sample of 956 PPM, and decrease from 956 PPM to 754 PPM within 40 seconds with a water-enhancing sample of 215 PPM for the 780 PPM set point. PPM value of nutrients can be affected by the presence of other solids such as sand which dissolves with water.

Evaluation of Nutrient Dosing Methods for Hydroponic Crop Cultivation

“…Finding the same reference regarding the dosing mechanism used in this study is difficult, so the results cannot be compared directly. However, compared with the duration of dosing carried out by Untoro & Hidayah (2022) and Suseno et al (2019) to increase the concentration of the nutrient solution every 100 ppm, this study required a much longer time. This study's dosing process prioritizes the accuracy of the results of mixing nutrients, so the pump used in this study has a small and constant discharge.…”

Simultaneous Hydroponic Nutrient Control Automation System Based on Internet of Things

“…TDS in nutrients indicates the level of nutrient concentration. This value is strongly influenced by what is dissolved in the nutrient content [6]. Units of parts per million (ppm) represent the TDS value [7].…”