This project presents the development of a sleep apnea monitor utilizing an LDR sensor and mirror to detect skin color changes associated with sleep apnea episodes. Sleep apnea is a common sleep disorder with potential health side effects, requiring effective monitoring for management and prevention of complications. The proposed monitor has the potential to alert users or caregivers during sleep apnea episodes and track treatment efficacy. However, this concept remains in the experimental stage and has limited clinical adoption to date.
The main objective of the sleep apnea monitor is to identify changes in blood flow and oxygen saturation during episodes of sleep apnea by detecting alterations in skin color. This will be achieved by measuring the amount of reflected light from the skin using an LDR sensor and processing the data with a microcontroller, such as an Arduino. The circuit will incorporate other essential components such as resistors and a power source, which can be a battery or an AC adapter. The program will analyze the data from the LDR sensor and trigger alerts when episodes of sleep apnea are detected.
Sleep apnea monitoring using LED, mirror, and LDR involves emitting red light that interacts with tissue, penetrating the skin and reaching blood vessels. Hemoglobin in the vessels absorbs light differently based on its oxygenation, allowing changes in blood oxygen saturation levels to be monitored over time using an LDR. A mirror is used to reflect the light back, aiding in light collection. The chosen monitoring site and use of a mirror ensure accurate measurement of oxygen saturation changes associated with sleep apnea.
https://drive.google.com/file/d/1Atd9EeBZMnClLXdyVzxaR4bZdCgcNdfo/view?usp=share_link
https://drive.google.com/file/d/1Assb4eQ0oqluPjCmP6lokhBCenJ67m8q/view?usp=share_link