Lock-in detection for Illuminance measurement

Colás Lapuente, Noelia
Mercier, Franck (dir.)

Martín del Brío, Bonifacio (ponente)

Universidad de Zaragoza, EINA, 2024
Departamento de Ingeniería Electrónica y Comunicaciones, Área de Tecnología Electrónica

Graduado en Ingeniería Electrónica y Automática

Resumen: This project proposes the design and implementation of an artificial luminosity measurement system in daylight conditions using lock-in detection. In the context of the LARIS laboratory and the ROMULUX project, a robot has been developed that can map its environment and take luminosity measurements. However, due to the lack of control over lighting in buildings constructed according to standard norms, over-illumination tends to occur, leading to health issues, excessive energy consumption, and additional installation costs. The difficulty of effectively measuring artificial light during the day has motivated this project, which aims to enhance the capabilities of the light detector by using synchronous detection to discriminate artificial light from the "noise" of natural light. This will allow measurements to be taken during the day, thus avoiding the need to operate during unusual hours or obtain special authorizations to operate at night. The project involves an analog part using a photodiode and amplification, followed by the implementation of lock-in detection using the AD630 analog demodulator. This technical solution offers an innovative approach to addressing the challenges associated with accurately measuring artificial luminosity in daylight environments, with significant implications for energy efficiency and human well-being.

Tipo de Trabajo Académico: Trabajo Fin de Grado