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MIT's device monitors people's sleep postures using radio signals

By Tanisha Jindal

Researchers at Massachusetts Institute of Technology (MIT) have created a device that can track people’s sleep postures without having to use cameras or to stick sensors on their bodies. It’s a wall-mounted monitor the team dubbed BodyCompass, and it functions by evaluating radio signals as they bounce off things present in a room. According to the researchers, a device that can review sleep postures has various probable usages. For example, it could be expanded to chase the progression of Parkinson’s disease, since people with the same lose their potential to turn over in bed.

To distinguish between radio signals bouncing off a body and signals bouncing off some random objects in a room, the technique concentrates on signals that bounce off a person’s chest and belly. In simple words, the body parts that move while breathing. Thereafter, it sends those signals to the cloud so that the BodyCompass system can analyze the user’s posture.

The team tutored their innovation’s neural network and questioned its accuracy by collecting 200 hours of sleep data from 26 subjects who had to wear sensors on their chest and belly in the beginning. The team asserted that after testing the device on a week’s worth of data, the device indicated the subject’s correct body posture 94 % of the time.

In the future, BodyCompass could be paired with distinct devices to urge people to alter their sleeping positions, such as smart mattresses. The paper on MIT’s website (PDF) has been uploaded till the team member Shichao Yue introduces the innovation at the UbiComp 2020 conference on September 15th.

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