A team of MIT researchers has developed a device that can record people's sleeping positions without
To distinguish radio signals bouncing offbody, from signals bouncing off random objects in the room, the system focuses on impulses from a person's chest and abdomen - parts of the body that move during breathing. It then sends these signals to the cloud so that BodyCompass can analyze the user's position.
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The team trained and tested the neural networkaccuracy, collecting 200-hour sleep data from 26 subjects who initially had to wear sensors on their chest and abdomen. The researchers noted that after a week of testing, the device correctly indicated the subject's body position 84% of the time.
In the future, BodyCompass can be combined withother appliances, such as smart mattresses. When this happens, the device will reduce the incidence of sleep apnea and notify caregivers when patients are moving at risk of injury. The device will also tell in which position users get better sleep.
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