The Sleep Quality of Real-Time Monitoring System Based on Fiber-Bragg-Grating

For empty nesters and bedridden patients, a sleep quality real time monitoring system based on fiber Bragg grating (FBG) is designed and implemented. Using FBG as the sensing elements, the pressure can be converted into the wavelength drift. Wavelength Division Multiplexing (WDM) technique is utilized to form the sensor network on the basis of combining 20 FBGs with different peak wavelength. Fiber grating sensor demodulation instrument (Micron Optics SM-125) is used to achieve a frequency of 2 Hz data collection, and then connected to the computer, data pro- cessing and function realization using LabVIEW programming. By using LabVIEW program mod- ules for real-time analysis and computing the experimental data collected, the real time monitor- ing system of sleep quality with two functions of turnover per unit time and the sleep position has been realized ultimately.

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