The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2024
Filed:
May. 18, 2018
Essity Hygiene and Health Aktiebolag, Gothenburg, SE;
Daniel Lindstedt, Lund, SE;
Maria Zevgren Sundberg, Gothenburg, SE;
Annie Thorburn, Ellos, SE;
Maciej Walesiak, Warsaw, PL;
ESSITY HYGIENE AND HEALTH AKTIEBOLAG, Gothenburg, SE;
Abstract
A method is provided for detecting presence and absence of a creature. The method includes, receiving an input signal from a radiation sensor; applying a first low-pass filter to the received input signal with a first time constant and generating a first filter output; applying a second low-pass filter to the received input signal with a second time constant and generating a second filter output. The method also includes determining a presence of a creature by comparing a slope of the first filter output to a predetermined value; and determining an absence of the creature based on further processing. A corresponding device for detecting presence and absence of a creature is also provided.