Amazon Echo supports in-room awareness. Ultrasonic motion detection and camera recognition

The Echo series of Amazon smart speakers supports room awareness, which can detect whether a person is in or out of a room, and start a fixed action.

Those who can take advantage of indoor perceptual stereotyping are Echo Show10 and Echo Show8 with monitors (second generation), Echo Show5 (second generation), and Echo without displays (fourth generation), Echo Dot (fourth generation), and Echo Dot with clock (fourth generation).

In the case of a terminal with a camera, the image processing is used to determine whether the person is photographed or not. So, when it comes to what Echo does without a camera, it emits sounds that can't be heard by humans, captures responses with microphones, recognizes large movements like human movement, and achieves the function of human sensors through "ultrasonic motion detection" technology.

Become the 4th generation Echo of sphere, validate the evolution as loudspeaker

Detect the stereotyped actions of starting in the absence of the room, such as lighting for entering the room, playing music and news, weather forecast, etc., recognizing that no one is going to cut off the TV and air conditioning, etc.

In the case of an Echo Show terminal with a camera, if someone enters the view of the camera, it is judged to be in the room. Amazon explained that for privacy concerns, testing will be processed locally and therefore will not be sent to the cloud.

The ultrasonic motion detection of the Echo without a camera can recognize large movements such as walking, on the other hand, sometimes it cannot be recognized by sitting quietly or waving. Depending on the accuracy and setting, it can be troublesome to be treated as an absence when you are motionless.

As a technology to realize smart home without being triggered by sound, Google has introduced sleep measurement using Soli radar technology into Nest Hub, in addition to human sensors, temperature and humidity sensors, which are sold separately by various companies.

As the motion detection of the whole room, Linksys's mesh router has the guardian function of measuring human wave fluctuations.

Sleep monitoring update of the second generation Nest Hub. Get more detailed information

Alexa's Room-aware stereotyping Operation Mechanism-Amazon customer Service