Differential Enhancement Method for Robust and Accurate Heart Rate Monitoring via Microwave Vital Sign Sensing

Noncontact vital sign detection based on microwave sensing has attracted much interest for its important application potential in many fields, especially in the field of healthcare. However, robust and accurate heart rate (HR) tracking remains a challenge due to the tricky and universal respiration...

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Published inIEEE transactions on instrumentation and measurement Vol. 69; no. 9; pp. 7108 - 7118
Main Authors Xiong, Yuyong, Peng, Zhike, Gu, Changzhan, Li, Songxu, Wang, Dong, Zhang, Wenming
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Differential enhancement (DE)
Harmonic analysis
Heart beat
Heart rate
heart rate (HR) variability (HRV)
heart rate monitoring
Interference
Mathematical analysis
Microwave filters
microwave radar
Monitoring
Periodic variations
Power harmonic filters
Respiration
respiration harmonic interference
Robustness (mathematics)
Telemedicine
vital sign detection
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Abstract Noncontact vital sign detection based on microwave sensing has attracted much interest for its important application potential in many fields, especially in the field of healthcare. However, robust and accurate heart rate (HR) tracking remains a challenge due to the tricky and universal respiration harmonic interference in real scenarios. In this article, a novel method, called differential enhancement (DE), was proposed, which can effectively eliminate the effects of the respiration harmonic interference on HR estimation, including the likely adjacent harmonic interference. The basic idea underlying our proposed method is that the differential operation can significantly enhance the heartbeat components, especially high-order heartbeat harmonics, and it is very useful to locate the true value of HR by combining with the autocorrelation-based periodicity extraction technique. The detailed procedures for performing the DE method were described, which can be simply implemented and have low computational complexity. In addition, a rigorous mathematical analysis was provided for demonstrating the robustness and accuracy of the algorithm. Experimental results with various scenarios validated the performance of the proposed method, and we investigated the HR variability (HRV) monitoring capability of the DE method with a short sliding window length.
AbstractList Noncontact vital sign detection based on microwave sensing has attracted much interest for its important application potential in many fields, especially in the field of healthcare. However, robust and accurate heart rate (HR) tracking remains a challenge due to the tricky and universal respiration harmonic interference in real scenarios. In this article, a novel method, called differential enhancement (DE), was proposed, which can effectively eliminate the effects of the respiration harmonic interference on HR estimation, including the likely adjacent harmonic interference. The basic idea underlying our proposed method is that the differential operation can significantly enhance the heartbeat components, especially high-order heartbeat harmonics, and it is very useful to locate the true value of HR by combining with the autocorrelation-based periodicity extraction technique. The detailed procedures for performing the DE method were described, which can be simply implemented and have low computational complexity. In addition, a rigorous mathematical analysis was provided for demonstrating the robustness and accuracy of the algorithm. Experimental results with various scenarios validated the performance of the proposed method, and we investigated the HR variability (HRV) monitoring capability of the DE method with a short sliding window length.
Author Gu, Changzhan
Zhang, Wenming
Wang, Dong
Xiong, Yuyong
Peng, Zhike
Li, Songxu
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Snippet Noncontact vital sign detection based on microwave sensing has attracted much interest for its important application potential in many fields, especially in...
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SubjectTerms Algorithms
Differential enhancement (DE)
Harmonic analysis
Heart beat
Heart rate
heart rate (HR) variability (HRV)
heart rate monitoring
Interference
Mathematical analysis
Microwave filters
microwave radar
Monitoring
Periodic variations
Power harmonic filters
Respiration
respiration harmonic interference
Robustness (mathematics)
Telemedicine
vital sign detection
Title Differential Enhancement Method for Robust and Accurate Heart Rate Monitoring via Microwave Vital Sign Sensing
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