Principles of textile-based sensors for sleep-monitoring

3 Principles of textile-based sensors for sleep-monitoring 

It was mentioned before that various measureable parameters give information about our sleep quality. In the following subsections, measuring principles for these parameters, i.e. ECG, EEG, EOG, respiration, movement, and temperature, are described. 

Comfort depends on physical and thermal parameters. If the ambient temperature while sleeping is too high or too low, we will suffer from a disturbed sleep. Controlling the ambient temperature will help to increase our sleep quality. 

Temperature sensors can be divided into several types according to the materials used and the operational principles. 

Resistance temperature detectors (RTDs) indicate temperature values according to changes in the electrical resistance of metals. 

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