Method for Measuring Acceleration by the Spectrum of Self-Mixing Signal of Semiconductor Laser

Skripal, A. V.; Dobdin, S. Yu.; Dzhafarov, A. V.; Sadchikova, Karina A.; Dubrovskaia, Irina A.

doi:10.18500/1817-3020-2019-19-4-279-287

ISUNSSP

2019

DOI: 10.18500/1817-3020-2019-19-4-279-287

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Method for Measuring Acceleration by the Spectrum of Self-Mixing Signal of Semiconductor Laser

A. V. Skripal¹,

S. Yu. Dobdin²,

A. V. Dzhafarov³

et al.

Abstract: Скрипаль Анатолий Владимирович, доктор физико-математических наук, профессор, заведующий кафедрой медицинской физики, Саратовский национальный исследовательский государственный университет имени Н. Г. Чернышевского,

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2021

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Analysis of the pulse waveform in arterial vessels using the spectrum of the autodyne signal of a laser interferometer

Skripal¹,

Dobdin²,

Dzhafarov³

et al. 2021

Quantum Electron.

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The results of measuring the derivative of the pulse wave using a laser autodyne based on the Fourier analysis of the low-frequency spectrum of the interference signal are presented. The features of using the windowed Fourier transform for window types and window widths are discussed. The correlation coefficient between the derivative obtained by direct differentiation of the sphygmographic signal and the frequency dependence of the windowed Fourier transform obtained from the analysis of the interference signal is calculated. It is shown that the amplitude of biovibration of the skin surface has the greatest influence on the correlation of the frequencies of the window spectrum of the autodyne signal with direct measurements of the pulse wave parameters by the sphygmographic method. Using a hardware-software system, we measured the sphygmogram of the pulse wave in the radial artery in a 19-year-old man who did not suffer from cardiovascular diseases. The derivative of the pulse wave obtained from the sphygmogram was compared with the dependence of the frequencies of the window spectrum of the autodyne signal. A comparative analysis of the dependences of the frequencies of the spectral harmonics of the window method with the derivative of the sphygmographic pulse showed a good correlation at the amplitudes of biovibration of the skin surface exceeding 10 μm.

show abstract

Analysis of the pulse waveform in arterial vessels using the spectrum of the autodyne signal of a laser interferometer

Skripal¹,

Dobdin²,

Dzhafarov³

et al. 2021

Quantum Electron.

View full text Add to dashboard Cite

show abstract

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Method for Measuring Acceleration by the Spectrum of Self-Mixing Signal of Semiconductor Laser

Cited by 1 publication

References 19 publications

Analysis of the pulse waveform in arterial vessels using the spectrum of the autodyne signal of a laser interferometer

Analysis of the pulse waveform in arterial vessels using the spectrum of the autodyne signal of a laser interferometer

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