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US 10,420,682 B2Granted
Sensor arrangement for measuring moisture and the presence of a person on a base
AssigneeMaricare Oy
InventorsJuha Lindström, Atte Piipponen, Göran Sundholm
Life of this patent
Estimating the term…
Abstract
Sensor arrangement and method for monitoring a person with a sensor arrangement, which includes measuring electronics and a sensor structure that can be fitted onto a base. The sensor structure includes at least one sensor, and the arrangement determines, by the data measured by the measuring electronics and the sensor, a change in the moisture of the base and the presence of a person on the base.
Claims23
A sensor arrangement, comprising:
- a base;
- a first electrically conductive plate on the base;
- a plurality of second electrically conductive plates parallel to the first conductive plate;
- a first electrically insulative material between the first electrically conductive plate and the plurality of second electrically conductive plates;
- a second electrically insulative material between the plurality of second electrically conductive plates, the second electrically insulative material being permeable to moisture,
- wherein the sensor arrangement is adapted to determine whether the moisture of the base has changed by changes in an electrical characteristic between two of the plurality of second electrically conductive plates, and
- the sensor arrangement is further adapted to determine pressure on the base by changes in an electrical characteristic between the first electrically conductive plate and one of the plurality of second electrically conductive plates.
4 more elements
A method for monitoring a person with a sensor arrangement, comprising:
- forming a first electrically conductive plate on a base;
- forming a plurality of second electrically conductive plates parallel to the first conductive plate;
- forming a first electrically insulative material between the first electrically conductive plate and the plurality of second electrically conductive plates;
- forming a second electrically insulative material between the plurality of second electrically conductive plates, the second electrically insulative material being permeable to moisture;
- determining whether moisture of the base has changed by changes in an electrical characteristic between two of the plurality of second electrically conductive plates;
- and
- determining pressure on the base by changes in an electrical characteristic between the first electrically conductive plate and one of the plurality of second electrically conductive plates.
4 more elements
Dependencies are inferred from the claim text.