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:
Jul. 08, 2025
Filed:
Dec. 28, 2024
Sakila S. Jayaweera, College Park, MD (US);
Beibei Wang, Clarksville, MD (US);
Guozhen Zhu, Greenbelt, MD (US);
Weihang Gao, Rockville, MD (US);
Chenshu Wu, Hong Kong, CN;
K. J. Ray Liu, Potomac, MD (US);
Oscar Chi-lim AU, Rockville, MD (US);
Sakila S. Jayaweera, College Park, MD (US);
Beibei Wang, Clarksville, MD (US);
Guozhen Zhu, Greenbelt, MD (US);
Weihang Gao, Rockville, MD (US);
Chenshu Wu, Hong Kong, CN;
K. J. Ray Liu, Potomac, MD (US);
Oscar Chi-Lim Au, Rockville, MD (US);
ORIGIN RESEARCH WIRELESS, INC., Rockville, MD (US);
Abstract
Wireless sensing for in-vehicle child presence detection is described. In one example, a described method comprises: obtaining a time series of channel information (TSCI) of a wireless channel in a vehicle; computing a motion statistics (MS) based on channel information (CI) of the TSCI in a time period; detecting a motion of a user in the time period by comparing the motion statistics with a first threshold, wherein the motion of the user is detected when the motion statistics exceed the first threshold; constructing a 2-dimensional (2D) transform matrix based on 1-dimensional (D) transforms of CI of TSCI in sliding time windows in the time period; detecting a number of horizontal streaks of the 2D transform matrix; detecting a breathing motion of the user in the time period based on the number of detected horizontal streaks of the 2D transform matrix and an associated criterion.