A Low-Cost Portable Optical Fiber-Based Sensor for Water Turbidity Measurement

This paper presents a low-cost portable turbidity sensor using optical fiber. The system composition is described in detail, including the design of the sensor probe, signal conditioning module and data processing. In our solution, support vector regression (SVR) and temperature compensation are combined to model the relationship between the turbidity and the voltages (transmitted voltage and side-scattered voltage). Besides, we provide direct user accessibility via operation interface on an application (APP). The performance of the turbidity sensor has been verified in the laboratory. Experiments are conducted using standard turbidity solution, and the results demonstrate that the proposed sensor is feasible and effective.