Development of an Integrated Dissolved Oxygen Monitoring System in a Prawn Nursery Pond
DOI:
https://doi.org/10.5281/zenodo.21639603Keywords:
dissolved oxygen monitoring, prawn nursery pond, aeration control, microcontroller, aquaculture automation, water quality monitoringAbstract
This study developed and evaluated an integrated dissolved oxygen (DO) monitoring system for a prawn nursery pond. Using a research and development approach, the system was designed to automate oxygen-level monitoring, activate aeration when DO levels fall below a user-defined threshold, and provide real-time visualization through a web-based interface. The system integrated a DO probe sensor, Arduino microcontroller, NodeMCU-ESP8266 Wi-Fi module, web server, database, graphical user interface, and aeration system using air-stone diffusers. Laboratory testing was conducted using a 16 x 8 x 10-inch aquarium tank with 5 liters of water, while field testing was conducted to determine system functionality, connectivity, usability, accuracy, reliability, and efficiency. The system was validated by three IT experts, three fishery experts, and three end users or prawn farmers using an ISO 9126-based evaluation instrument and a five-point response scale. Results showed very high acceptability ratings from IT experts (4.95), fishery experts (4.92), and users (4.97), all verbally interpreted as Strongly Agree. The findings confirmed that the system could monitor DO values in real time, activate aerators to regulate oxygen levels, generate graphical reports, and support remote access through Wi-Fi-enabled devices. The study concludes that the integrated DO monitoring system can improve water-quality management, reduce manual monitoring work, and support more efficient and sustainable prawn nursery operations.
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