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Chinese Journal of Lasers, Volume. 47, Issue 2, 207042(2020)

Measurement of Heart Rate Based on Ballistocardiography

Kong Lingqin1, Wu Yuheng1, Pang Zongguang2, Zhao Yuejin1、*, Dong Liquan1, Liu Ming1, Hui Mei1, Wang Weijie1, Guo Ying1, and Wang Xiatian1
Author Affiliations
  • 1Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology,School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 2North Information Control Research Academy Group Co., Ltd., Nanjing, 211153, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
    Equations (0)
    References (28)
    Cited By (5)
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    Figures & Tables(13)
    Involuntarily periodic oscillation in BCG

    Fig. 1. Involuntarily periodic oscillation in BCG

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    OLA-BCG principle. (a) OLA-BCG experimental device diagram; (b) OLA-BCG schematic diagram

    Fig. 2. OLA-BCG principle. (a) OLA-BCG experimental device diagram; (b) OLA-BCG schematic diagram

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    Feature points selection. (a) Feature points selection in Ref.[11]; (b) feature points selection in Ref.[12]; (c) feature points selection in Ref.[17]; (d) reflected laser feature point in OLA-BCG

    Fig. 3. Feature points selection. (a) Feature points selection in Ref.[11]; (b) feature points selection in Ref.[12]; (c) feature points selection in Ref.[17]; (d) reflected laser feature point in OLA-BCG

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    Algorithm flowchart

    Fig. 4. Algorithm flowchart

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    Calculation flow chart of centroid of reflection spot

    Fig. 5. Calculation flow chart of centroid of reflection spot

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    Original BCG signals in different directions. (a) x direction; (b) y direction

    Fig. 6. Original BCG signals in different directions. (a) x direction; (b) y direction

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    Frequency domain diagrams of original BCG signals in different directions. (a) x direction; (b) y direction

    Fig. 7. Frequency domain diagrams of original BCG signals in different directions. (a) x direction; (b) y direction

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    BCG signal filtered by ICA

    Fig. 8. BCG signal filtered by ICA

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    Schematic diagram of SNR calculation

    Fig. 9. Schematic diagram of SNR calculation

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    Bland-Altman analysis result and Pearson correlation coefficient. (a) Bland-Altman analysis result; (b) Pearson correlation coefficient

    Fig. 10. Bland-Altman analysis result and Pearson correlation coefficient. (a) Bland-Altman analysis result; (b) Pearson correlation coefficient

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    • Table 1. Summary of evaluation indicators

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      Table 1. Summary of evaluation indicators

      IndicatorDescriptionCalculation formula
      Mean_differenceMean error of heart rate differenceMean_difference=mean(Hr_difference)
      Sd_differenceStandard deviation of heart rate differenceSd_difference=sqrt(Hr_difference)
      ERMSRoot-mean-square error of heart rate differenceERMS=D(Hr_difference)
      Pmax_differenceMaximum value of heart rate differencePmax_difference=max(Hr_difference)
      rPearson correlation coefficient between Hr_BVP and Hr_BCGr=corr(Hr_BVP,Hr_BCG)
      RSNRatio of power of main pulsatile componentand power of background noise[29]RSN=∫C1C2y(f)df∫B1B2y(f)df-∫C1C2y(f)df

    • Table 2. Evaluation index statistics of different methods

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      Table 2. Evaluation index statistics of different methods

      Evaluation indexMethod in Ref.[11]Method in Ref.[12]Method in Ref.[17]OLA-BCG
      Mean_difference /(beat·min-1)2.581.50.79-0.67
      Sd_difference /(beat·min-1)2.713.353.102.15
      ERMS /(beat·min-1)3.663.563.122.22
      Mean_SNR /dB-5.45-9.42-7.831.70
      Pmax_difference /(beat·min-1)6554
      r0.710.490.890.88

    • Table 3. Improvement of different evaluation indexes

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      Table 3. Improvement of different evaluation indexes

      MethodΔMean_difference /%ΔSd_difference /%ΔERMS /%ΔMean_SNR /dBΔPmax_difference /%Δr /%
      Method in Ref.[11]74.0320.6639.347.1533.3423.94
      Method in Ref.[12]55.3335.8237.6411.1220.0079.59
      Method in Ref.[17]15.1930.6528.859.5320.00-1.12
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    Kong Lingqin, Wu Yuheng, Pang Zongguang, Zhao Yuejin, Dong Liquan, Liu Ming, Hui Mei, Wang Weijie, Guo Ying, Wang Xiatian. Measurement of Heart Rate Based on Ballistocardiography[J]. Chinese Journal of Lasers, 2020, 47(2): 207042

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    Paper Information

    Category: biomedical photonics and laser medicine

    Received: Oct. 8, 2019

    Accepted: --

    Published Online: Feb. 21, 2020

    The Author Email: Yuejin Zhao (yjzhao@bit.edu.cn)

    DOI:10.3788/CJL202047.0207042

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology