Kepada: Amirullah Amirullah
ELKHA : Jurnal Teknik Elektro baru saja menerbitkan edisi terbarunya di https://jurnal.untan.ac.id/index.php/Elkha. Amirullah Ubhara Surabaya
ELKHA : Journal Teknik Elektro, Vol. 1,2) Electrical Engineering Study Program, Universitas Bhayangkara Surabaya, Indonesia Corresponding email: *) [email protected]. Abstract – This paper aims to implement the prototype model to monitor and control the pH levels and feed plant (electrical conductivity-EC) produced by a self-contained photovoltaic (PV) module-connected battery (Lithium-Ion) on the greenhouse hydroponic systems are provided.
Monitoring and Controlling of pH Levels and Plant Nutrition Supplied by Standalone Photovoltaic in a
RESULTS AND DISCUSSION
If the pH level is below 7, then the pH-down pump will work (On), otherwise if the pH level is above 7, then the pH-up pump will work (On). Meanwhile, measurement 2 shows that the pH value of the water is 6.86, which is read by a digital pH meter and a pH sensor as 6.8 and 6.76 respectively. The performance measurement of the pH monitoring system is performed to ensure that the pH of the water can be controlled at an acidity level between 6-7.
The function of pH-Up and pH-Down is to maintain the pH of the hydroponic plant water at a level of 6-7. In this state, the solenoid valve will open to drain water with a higher pH value, so that the pH value rises above 6. In this state, the solenoid valve will open to drain water with a lower pH value, thus lowering the pH value below 7.
In this state, the solenoid valve will open to release the EC water and raise the pH level above 1. The prototype model can monitor and control the pH of water in hydroponic plants at a level between 6-7 using the pH-up and pH-down sensor.
PEER-REVIEW REPORT (Reviewer Number: RV1.)
Manuscript Identity
Comments
Major Comments to the Authors
Reviewer
Major Comments/Questions
Minor Comments to the Authors
Minor Comments/Questions
2.4. Overall Comments to the Authors
Comments to the Editors
PEER-REVIEW REPORT (Reviewer Number: RV2.)
Reviewer Recommendation: Accepted/ Accepted with Minor Revisions / Major Revisions / Rejected
Overall Comments to the Authors
The prototype model is able to monitor and control the pH of hydroponic plant water at the level between 6-7 using a pH-up and pH-down sensor. The PV module is a source of electrical power to operate the pH control system and the water level of hydroponic plant nutrients until the harvest period is implemented on [1]. This model works when the pH sensor detects below 6, then at pH-up the solenoid valve automatically opens and flows into the feed.
Therefore, when the sensor detects a pH of more than 7, the solenoid valve opens and the pH-reduced solution flows into the nutrient solution. The solenoid valve closes again when the sensor detects a pH between 6 and 7. The pH control and nutrient level are controlled by a solenoid valve, controlled by a water pump, and the power is supplied for 24 hours by the PV module with different tilt angles.
This research will implement the prototype model to monitor and control the pH levels and the nutrient supply provided by a 100 watt-peak (Wp) stand-alone PV panel-connected battery on hydroponic greenhouse systems. If the pH level is below 7, the PH pump down will work (On), conversely, if the pH level is above 7, the pH up pump will work (On). The pH sensors for water and for soil must be calibrated at regular intervals so that the accuracy of the measurement is guaranteed.
Otherwise, in the second measurement, it turns out that the pH value of the water is 6.86, which is read by a digital pH meter and a pH sensor, respectively 6.8 and 6.76. Measurements are made in a hydroponic plant monitoring system, using a relay that operates to drive the pH pump motor. This prototype was able to control the pH level between 6-8 and the feed water level between 18-20 cm.
This prototype could control the pH level between 6-6.5 and the feed water level between 6-8 cm. The prototype model to monitor and control the pH levels and EC nutrient supply provided by a stand-alone PV module-connected battery on greenhouse hydroponic systems has been implemented. The pH and EC sensors are connected to the Arduino Uno circuit as a relay control to drive four pumps viz.
The PV module is a source of electric power to operate the pH control system and the water level of hydroponic plant nutrients until the harvest period is implemented in [1]. If the pH level is below 7, the PH pump down will work (On), conversely, if the pH level is above 7, the pH up pump will work (On).
AUTHOR REVISION REPORT
RV1): Accepted with Minor Revisions
RV2): Accepted with Minor Revisions . Revision Submission
Reviewers (R1 & R2) Authors
Comments/Questions Comments/Answers/Revisions in the Manuscript
Answers
Major Comments Answers/Revisions in the Manuscript
Revision on Minor Comments
Reviewers (R1 & R2) Authors Minor
Comments/Questions Comments/Answers/Revisions in the Manuscript
The authors have revised all tables, figures, and sentences in this manuscript and given them appropriate spacing. Some figures have no space or even have a large space with a picture or phrase next to it. Give adequate space between them. The authors have revised all tables, figures, and sentences in this manuscript and given them appropriate spacing.
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LKHA
The Arduino Uno circuit with a 20×4 liquid crystal display (LCD) orders four relays to monitor and control the four pumps of the hydroponic system in the greenhouse based on the coding previously programmed. The wireless EC sensor provided by the grid of Indonesia Electric Company (PLN) to monitor and control the concentration of nutrient solution for hydroponic plant cultivation using two Nutrient Film Technique (NFT) tables has been proposed in [2 ]. Monitoring and controlling pH levels and plant nutrition provided by standalone photovoltaic energy in a power supply provided by standalone photovoltaic energy in a greenhouse hydroponic system using Arduino Uno.
The prototype of the EC control and water volume on hydroponic system using fuzzy logic was observed in [7]. Fuzzy logic control using the EC sensor was able to control EC between 110-2000 µS/cm and generate good performance with an average error of 1.91%. This proposed model is called the monitoring system for pH and plant nutrition in a greenhouse hydroponic system using Arduino Uno.
The relay circuit is a link between the Arduino Uno circuit with the water flow pump, feed pump (EC), pH up pump and pH down pump to work on controlling the hydroponic system in the greenhouse based on the coding previously programmed on Arduino. Nano. The series of EC sensors installed in the greenhouse hydroponic system are connected to the Arduino-Uno, using the IDE software and libraries in the Arduino Uno. The LCD circuit installed with a greenhouse hydroponics is connected to the Arduino-Uno, using the IDE software and libraries in the Arduino Uno.
Up and down, the pH of hydroponic plant water is at a level of 6-7. In [3], Yuga Hadfridar Putra et.al proposed to supply Arduino Uno with PLN network to control EC level, high feed water level, temperature and its value which would be wirelessly monitored by site. In [7], Ahmad Rifai et al proposed an Arduino Uno using Fuzzy Logic controller provided by PLN network to control EC level and feed water level and its value to be monitored in real time using 16 × 2 LCD .
