Desarrollo de un sistema de detección del nivel de radiación UV dentro de invernaderos agrícolas : diseño, desarrollo y acondicionamiento de un sistema de sensado de radiación UV, para obtención de información a través de técnicas de espectroscopia UV

Abstract

This document details the design, development, and implementation of a UV radiation detection system using optical spectrometry techniques for use in agricultural greenhouses. The prototype operates in three instances: two for field use and one for laboratory use. In the field, measurements are taken at the roof level and at the plant or ground level, while in the laboratory, measurements are taken using a UV LED to sample plastics. The system can detect light intensity at various wavelengths filtered by greenhouse plastic samples, allowing for the evaluation of the quality of these filters before implementation in a real greenhouse. It can also take samples from a real greenhouse to assess the timing for filter replacements. It measures light intensity at different wavelengths at the roof level of real greenhouses and at plant level, thus evaluating the radiation plants receive in different scenarios. The mechanical designs of the prototype and its integral parts were created using Inventor software, based on light capture and focal lengths for collimation of the lenses used. These parts were printed with PLA filament, which is durable and optimal for field use. An HMI was implemented in Matlab to control sample acquisition and configure the UV LED, allowing variation in its intensity. The results established various scenarios: at roof height with and without greenhouse plastic, at ground level with and without filters, and in the laboratory with different plastic samples. All scenarios demonstrated the accurate capture of UV intensity.