US Patent Issued to ASSA ABLOY on Sept. 1 for "Classifying vibrations" (Swedish Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,912, issued on Sept. 1, was assigned to ASSA ABLOY AB (Stockholm).

"Classifying vibrations" was invented by Tomas Jonsson (Ronninge, Sweden), Mats Cederblad (Hasselby, Sweden), Per Mackegard (Solna, Sweden) and Stefan Johansson (Stockholm).

According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided a method for classifying vibrations detected in a structure of a building. The method is performed in a vibration classifier and comprising the steps of: determining a measurement period of a vibration signal; splitting the measurement period in a plurality of sequential sub-periods; calculating, for each one of the sub-periods, a variation indicator of ...