Pressure change sensor detects more fall types in seniors

SINTEF‘s Anders Liverud and Tellu AS colleagues have developed a fall detector able to detect more types of incidents, including “sinking falls” often missed by current sensors.

These slow motion falls are difficult to monitor as they occur slowly, and the g-forces are not significant.  Examples include when a senior slides down a wall, or off the side of a bed.

The new system compares pressure changes between a sensor attached to a user’s upper body and others installed around the house. When the pressure in the sensor attached to the body rises, the system shows that the user is falling, irrespective of how rapidly or slowly it happens.  Altitude changes of as little as one centimeter are registered.

The technology has previously been used to measure changes in aircraft altitude, but never before as a fall detector.

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