NON-CONTACT FATIGUE DETECTION METHOD AND SYSTEM

WIPO Patent Application WO/2022/257187

A1

A non-contact fatigue detection method and system. The method mainly comprises: sending a millimeter-wave radar signal to a person to be subjected to detection, receiving an echo signal reflected from said person, and determining a time-frequency domain feature, a non-linear feature and a timing feature of a vital sign signal (S101); acquiring a facial video image of said person, and performing facial detection and alignment on the basis of the facial video image, so as to extract a time domain feature and a space domain feature of the face of said person (S102); fusing the time-frequency domain feature, the non-linear feature and the timing feature of the vital sign signal with the time domain feature and the space domain feature of the face of said person, so as to obtain a fused feature (S103); and inputting the fused feature into a classifier to perform fatigue state recognition of said person, and determining whether said person is in a fatigued state (S104). By means of the method, two detection techniques are fused, thereby effectively suppressing the interference of subjective and objective factors, and improving the accuracy of fatigue detection.

LIU SANNVYA (CN)
YANG ZONGKAI (CN)
ZHAO LIANG (CN)
QIN HONGLIANG (CN)
DU YIMING (CN)
YE SHIHAO (CN)
ZHU XIAOLIANG (CN)
DAI ZHICHENG (CN)

PCT/CN2021/101744

December 15, 2022

June 23, 2021

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UNIV CENTRAL CHINA NORMAL (CN)

A61B5/00

CN111166357A	2020-05-19
CN112401863A	2021-02-26
CN112418095A	2021-02-26
CN112686094A	2021-04-20
CN111329455A	2020-06-26
CN110115592A	2019-08-13
US10292585B1	2019-05-21
US20170036541A1	2017-02-09

WUHAN HUAZHIYU INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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