A smart arduino alarm clock based on NREM and REM sleep stage detection

Abstract

The article describes a development of a small-budget smart alarm clock, which is based on Arduino platform. A human organism can be found in three basic function stages during a sleep time. Vigilance or a light sleep, NREM sleep and REM sleep. The point of the smart alarm clock is to detect these stages and try to adapt a set alarm and wake a subject up in the best moment possible according to its sleeping cycle, which means during the vigilance or the light sleep. To detect the sleeping stages, the Arduino smart alarm clock uses a movement infra sensor and a noise sensor, which can enable the alarm clock to evaluate the impulses and adjust the set awaking time. For a better functionality the alarm clock is enhanced with a LCD LED display, a real-time clock, a sensor of temperature and humidity and a photosensitive sensor for switching the LED display off in the night. The alarm clock will be ready to use for better and more effective awakening.