Title:
NON-CONTACT RESPIRATION MONITORING METHOD BASED ON DOPPLER RADAR
Document Type and Number:
WIPO Patent Application WO/2023/004688
Kind Code:
A1
Abstract:
A non-contact respiration monitoring method based on a Doppler radar. The method comprises: pre-processing a radar echo signal; extracting, from the radar echo signal, the position where the thorax of a monitored object is located; extracting motion information of the position where the thorax of the monitored object is located; extracting a respiration waveform component from the motion information of the thorax of the monitored object; and obtaining a respiration frequency of the monitored object on the basis of a corresponding spectrum estimation of the respiration waveform. The method for monitoring the thorax of an object has a higher positioning precision, and is a basis for accurately extracting a thoracic motion signal. A respiration signal is separated from a heartbeat signal by means of an improved CEEMD algorithm, such that a good separation effect is achieved on body motion interference, background noise and a vital sign signal, and the problem of an end effect in an original CEEMD algorithm is effectively ameliorated by means of an improvement, thereby increasing the decomposition speed.
Inventors:
HAN YI (CN)
YE JIANPING (CN)
WANG SHUOYU (CN)
YE JIANPING (CN)
WANG SHUOYU (CN)
Application Number:
PCT/CN2021/109286
Publication Date:
February 02, 2023
Filing Date:
July 29, 2021
Export Citation:
Assignee:
NANJING ZHELI INTELLIGENT MANUFACTURING RES INSTITUTE CO LTD (CN)
International Classes:
A61B5/08; A61B5/00; G01S13/02; G01S13/50; G01S13/88
Foreign References:
| CN112674740A | 2021-04-20 | |||
| CN111373282A | 2020-07-03 | |||
| CN110118966A | 2019-08-13 | |||
| CN106646457A | 2017-05-10 | |||
| CN112816981A | 2021-05-18 | |||
| EP3384843A1 | 2018-10-10 |
Other References:
WANG YONG: "Design of non-contact sign monitoring module in mobile nursing system", CHINA CIO NEWS, 25 November 2017 (2017-11-25), pages 34 - 35, XP093028636
GAO HUI: "Research on Key Technology of 77GHz FM CW Radar Scene Perception", CHINESE MASTER'S THESES FULL-TEXT DATABASE, 1 December 2019 (2019-12-01), pages 1 - 81, XP093028639, DOI: 10.27241/d.cnki.gnjgu.2019.002157
LIU YI: "Research on key technology of lung sound signal processing based on EMD technology", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, 5 June 2019 (2019-06-05), pages 1 - 122, XP093028660, ISSN: 1013-7653, DOI: 10.27170/d.cnki.gjsuu.2019.000353
GAO HUI: "Research on Key Technology of 77GHz FM CW Radar Scene Perception", CHINESE MASTER'S THESES FULL-TEXT DATABASE, 1 December 2019 (2019-12-01), pages 1 - 81, XP093028639, DOI: 10.27241/d.cnki.gnjgu.2019.002157
LIU YI: "Research on key technology of lung sound signal processing based on EMD technology", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, 5 June 2019 (2019-06-05), pages 1 - 122, XP093028660, ISSN: 1013-7653, DOI: 10.27170/d.cnki.gjsuu.2019.000353
Attorney, Agent or Firm:
WUHU SICHENG INTELLECTUAL PROPERTY GROUP (CN)
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