How Does a Connected Alarm Clock Work

INSIGHT-Formerly simple as a turn of the key, the bedside alarm clock became smarter than the family computer. How connected objects they analyze our sleep, and how do they do for us out at the optimum time? 20minutes asks manufacturers of aXbo, Sleeptracker and Jawbone Up.

A priori, nothing brings them together. Besides being all belong to the family of intelligent objects, the Jawbone wristband, aXbo and Sleeptracker shows share a common interest for our sleep. As indeed many iOS apps  and Android , the trio opens the eye when the user just about to close his. During this period of a few hours, the sensors they contain will fill two separate missions: to recognize sleep stages traversed by the sleeper in order to provide a graphical analysis, and wake up to the best possible time. How? By observing our movements, simply.

Distinguish light or deep sleep

The three devices operating on the same principle. “During the night, the gyro sensor of the bracelet comes with the alarm will detect micro-movements of the sleeper, said François Hory, managing Sandmen, distributing company of aXbo in France. A preliminary scientific research in the design of alarm showed that we were able to detect the various stages of sleep from body movements. “He adds:” The movements are frequent in light sleep, much less in deep sleep while the body is totally paralyzed when the sleeper between paradoxical phase. “On the functioning of the device itself, the co-founder Brunel Gauthier adds:” The aXbo sensor sends the alarm when the user moves. The movements gathered in a sequence of movements, which is transmitted to the alarm clock in a hundredth of a second. ”

This analysis, transcribed in graphs, serves several purposes. First, it reveals the composition of his sleep, and evaluate quality. “WHO recommends, per night, between three and four hours of deep sleep phase in which the body regenerates, says Fanny Margoux, in charge of communication around this product Jawbone bracelet. Besides giving information about the amount of sleep, the bracelet to ask questions about how to improve its quality. ”

The Up is also the only object connected to have a coaching approach to our sleep. Paradoxically, it is also the one whose curves are less exploitable in the state. The user does not lose the exchange Advice and other daily recommendations, which address the application him to improve his lifestyle, are fully customized. Without being asked his opinion, the software cuts the data in its possession and did not hesitate to pull the alarm, for example if the bracelet wearer has slept 10 hours in three days. On the other alarm clocks, no such thing. A charge of bad sleeper to make his own diagnosis and to draw the conclusions that follow.

Wake up at the right time

We pull gently the arms of Morpheus is still, by far, the main selling point of smart alarm clocks. “Between the feeling of having had a good night, and reality, the clock plays a key role. When we feel tired despite several hours of sleep, it is because we woke up in deep sleep, “remarked Fanny Margoux. Based on the intensity of the movements of the sleeper, waking locate the most suitable alarm phase. After everything is algorithm case and sensor sensitivity. The Sleeptracker, in this case, carries “a compromise between all the movements made during the night, to recognize those who really represent the optimum time clock in a time range set in advance,” argues Daniel Ovadya, which markets the shows in France.

Claiming all the long years of research and approval of part of the scientific community, the three manufacturers nevertheless agree on one point, their products have no medical purpose. To find and treat various sleep disorders, nothing beats to date advice from a professional .

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