US 11,869,533 B2
Method and apparatus for tiredness detection
Michael Grimm, Weissach (DE)
Assigned to Dr. Ing. h. c. F. Porsche AG, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Feb. 16, 2022, as Appl. No. 17/673,353.
Claims priority of application No. 10 2021 105 311.0 (DE), filed on Mar. 5, 2021.
Prior Publication US 2022/0284918 A1, Sep. 8, 2022
Int. Cl. G10L 25/51 (2013.01); H04R 1/40 (2006.01); G10L 21/0208 (2013.01); H04R 3/00 (2006.01)
CPC G10L 25/51 (2013.01) [G10L 21/0208 (2013.01); H04R 1/406 (2013.01); H04R 3/005 (2013.01); H04R 2499/13 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An apparatus for tiredness detection, the apparatus being configured to receive a signal from at least one microphone, to acquire a time characteristic of yawning actions in the signal, and to use an analysis of the time characteristic to detect or not detect a tiredness of the driver from a frequency of yawning, a yawn intensity and/or a temporal compression between successive yawning actions, wherein the apparatus is designed to analyze the signal by extracting paralinguistic traits, in particular a pitch characteristic, a continuity of a tonal characteristic and/or at least one spectral trait, the apparatus being designed to detect a chronological succession of audible inhalation and tonal exhalation in the time characteristic and to determine a result of the analysis on the basis of the chronological succession.