This study presented the design and implement of a battery-powered and ambulatory biopotential acquisition unit and a friendly monitoring / recording interface for sleep monitoring at home. Compare to the standard PSG-Alice 5® Diagnostic Sleep System, our proposed system performed similar performance and quality.
The PSG recording program in the personal computer was developed in JAVA, and can run on any Java virtual machine (JVM) regardless of computer architecture.
By combining with Bluetooth® wireless technology, our design can be easily used anywhere at home and will not be restricted in a specific activity area. Moreover, compare to other portable PSG system, our proposed PSG system contains two-channel EEG, and therefore can offer more information to fit the requirement of accurate analysis and diagnosis. In our PSG system, the portable biopotential acquisition unit can continually work for about 16 to 20 hours with a 3.7V lithium battery without loss data. Therefore, it well supports a full-night sleep monitoring.
In conclusion, the aim of our proposed PSG system is not to replace standard 16-channel PSG system, but to collect important physiological information (EEG x 2, EOG x2, EMG x 1, ECG x1, and airflow) for sleep analysis at home. By using our PSG system, the cost of attended in-laboratory PSG experiment for OSA diagnosis can be effectively reduced. Furthermore, our system offers comfort and convenience of sleeping in patient’s own bed, and therefore may record more natural information that reflects the patient’s sleeping behavior.
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