A Novel Approach for Precise Motion Artefact Detection in Photoplethysmograph Signal Processing based on Dark Photocurrent

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A Novel Approach for Precise Motion Artefact Detection in Photoplethysmograph Signal Processing based on Dark Photocurrent
Abbas Hasan, 2017, "A Novel Approach for Precise Motion Artefact Detection in Photoplethysmograph Signal Processing based on Dark Photocurrent", https://doi.org/10.5683/SP/CZIJXC, Borealis, V1
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Description
PPG signal is a useful tool for quick and critical diagnosis related to cardiovascular output via wearable or portable devices. Its drawback is unreliable during non-stationary states due to occurrences of frequency overlap of the desired and motion artifact signals. The accelerometer is usually used to reflect the motion artifact when the adaptive noise cancellation technique is implemented to address this obstacle, but it failed to predict the value of real induced noise accurately. In this work, we investigate a new concept that is capable of providing the entire motion artifact separately by recruiting twin photodetectors to formulate the influential signals. The main function of photo-detector (MPD) is to generate the corrupted PPG signal. While the second photo-detector (CPD) that covered up from the light effect, will be used to reflect the corruption effect that exists in both sources simultaneously by counting the generated dark photocurrent (GDPC). To validate the GDPC approach, experiments were executed to analyze the response of two methods during steady and motion state. Results showed resemblance responses for both methods regarding the’ amplitude fluctuations and high positive correlations in the time domain. Furthermore, the FFT peak plots in frequency domain indicated the potential of CPD to reflect all fundamental frequencies caused by motion, unlike the acceleration approach. Therefore, the proposed concept is a sure-fire method to obtain precise measurements at a lower cost. (2017-05-10)
Subject Engineering
Keyword PPG signal, motion artifact, Covered Photo-Detector, Main Photo-Detector, Accelerometer
Notes A Novel Approach for Precise Motion Artefact Detection in Photoplethysmograph Signal Processing based on Dark Photocurrent Muhideen Abbas Hasan*,Department of Electronics, Technical Institute/Dour, Northern Technical University, Foundation of Technical Education, Iraq Fahmi Samsuri,Faculty of Electrical and Electronics Engineering, Universiti Malaysia Pahang, 26600, Pahang, Malaysia Kok Beng Gan,Department of Electrical, Electronic, and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
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Block diagram of the PPG sensor probe design.jpg
Block diagram of the PPG sensor probe design.jpg
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Published May 10, 2017
16 Downloads
MD5: de17cff226593b11df6102b8bae89200
Preview "Block diagram of the PPG sensor probe design.jpg"
main photo detector (MPD) and CPD during motion execution.jpg
main photo detector (MPD) and CPD during motion execution.jpg
JPEG Image - 54.2 KB
Published May 10, 2017
11 Downloads
MD5: e1cc6fb26e58e3671146c79c18b5597d
DATA ACQUISITION SET-UP AND PROTOCOL:Data from 3-axes accelerometer (AD335, Analog Devices) and covered photodetector were collected for four consecutive seconds separately for silence state and motions along with X, Y, and Z axis, as seen in figure 4a and utilizing the four channels DAQ-NI 9215 to sampling the acquired analog data as shown in Figure 4b.
Preview "main photo detector (MPD) and CPD during motion execution.jpg"
PCB solder side for PPG sensor probe.jpg
PCB solder side for PPG sensor probe.jpg
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Published May 10, 2017
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MD5: c7b43593931a5fd07b6b7312a286f1d9
Figure3. (a) Is the PCB solder side for PPG sensor probe; (b) Is the PCB component side for presented sensor probe; (c) and (d) are the proposed and classical PPG sensor layout respectively.
Preview "PCB solder side for PPG sensor probe.jpg"
photocurrent generation process.jpg
photocurrent generation process.jpg
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Published May 10, 2017
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MD5: aec1299234d6b02eb568153caad2fd91
(a) Is the photocurrent generation process [21]; (b) Is the current-voltage Curves Of An Optoelectronics Photodiode For Reverse And Forward Biases Of Operation. P0-P3 Represents Different Light Levels, Starting From Dark State And Up [25].
Preview "photocurrent generation process.jpg"
The gradient reduction of linear correlation coefficients according to the position changes of silence and moving along with X, Z and Y for the acceleration and the CPD signals.jpg
The gradient reduction of linear correlation coefficients according to the position changes of silence and moving along with X, Z and Y for the acceleration and the CPD signals.jpg
JPEG Image - 14.6 KB
Published May 10, 2017
12 Downloads
MD5: 2c02c7c2f1978da6d415f29a06dd8459
The gradient reduction of linear correlation coefficients according to the position changes of silence and moving along with X, Z and Y for the acceleration and the CPD signals
Preview "The gradient reduction of linear correlation coefficients according to the position changes of silence and moving along with X, Z and Y for the acceleration and the CPD signals.jpg"
The relationship between the acceleration and CPD signals during steady state in term.jpg
The relationship between the acceleration and CPD signals during steady state in term.jpg
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Published May 10, 2017
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MD5: 8166a0e06cc6ddfdfedc762e1e58a52d
The relationship between the acceleration and CPD signals during steady state in term of a) Amplitude Fluctuations within time domain; (b) Frequency Domain revealed same trends for almost plotted FFT peaks; (c) Linear Correlation Coefficient r has reported 0.9999;
Preview "The relationship between the acceleration and CPD signals during steady state in term.jpg"
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