Low-Cost RGB-LED photometric device for real-time dissolved oxygen and turbidity monitoring in wastewater
DOI:
https://doi.org/10.18687/LACCEI2026.1.1.2369Keywords:
Sensor fotométrico, ley de Beer-Lambert, monitoreo de aguas residuales, espectrofotometría, dispositivo de bajo costoAbstract
This research presents the design, implementation and experimental validation of a low-cost photometric device for real-time monitoring of dissolved oxygen concentration and turbidity in wastewater. The system integrates an RGB-LED illumination module with an LDR GL5528 sensor and a PIC18F4550 microcontroller. A total of 60 experimental measurements demonstrate dissolved oxygen values of 0.0052±0.0008 mg/L (Sample A, n=30) and 0.0058±0.0007 mg/L (Sample B, n=30) with average errors below 10%. The calibration curve (n=60 samples) yielded R2 = 0.9847, validating the system's accuracy.
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Published
2026-07-27
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Copyright (c) 2026 LACCEI
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How to Cite
Benites-Rodriguez, J., Pascual-Panduro, P., Grados-Gamarra, J., Damas-Flores, C., Castro-Vidal, R., Tabacchi-Murillo, J., & Ramos-Palacios, W. (2026). Low-Cost RGB-LED photometric device for real-time dissolved oxygen and turbidity monitoring in wastewater. LACCEI, 1(14). https://doi.org/10.18687/LACCEI2026.1.1.2369