Although the sleep monitoring function of smart watches is not used frequently, many smart watches have added such functions, and similar to the monitoring principle of smart bracelets , smart watches actually use the built-in sensors to monitor sleep data . For example, a three-axis accelerometer is used to judge the quality of sleep. Simply put, an accelerometer can measure the quality of sleep according to the amplitude and frequency of the wrist when monitoring sleep, and the principle of this method has also been demonstrated by the paper, although Accuracy is not comparable to data monitored by PSG, but can reflect general sleep conditions.
From the actual experience of the individual, the sleep monitoring of the smart watch can only achieve the monitoring effect, that is, it can help you analyze the data of deep sleep, breathing, heartbeat, etc., but it can not accurately feedback the situation of sleep, and the true meaning of the hospital. There is still a certain gap in sleep monitoring, but personally, it is worthy of recognition as a reference for sleep.
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