Development of a real‐time adaptive delta compression algorithm for photoplethysmography system

Photoplethysmography (PPG) is a simple and low‐cost optical technique that measures the blood volume change of the microvascular bed. The multichannel PPG recording system enables researchers to study the characteristics of the PPG signal from multiple body sites. Long‐time, continuous PPG signal mo...

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Vydané v:IEEJ transactions on electrical and electronic engineering Ročník 13; číslo 10; s. 1454 - 1460
Hlavní autori: Chong, Kim Soon, Gan, Kok Beng, Zahedi, Edmond
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Hoboken, USA John Wiley & Sons, Inc 01.10.2018
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Predmet:
Adaptive algorithms
adaptive delta data compression
Adaptive systems
Algorithms
Blood volume
Bluetooth
Compression ratio
Compression tests
Data compression
Graphical user interface
Photoplethysmograph (PPG)
Physicians
Recording
Signal monitoring
Storage capacity
Time compression
ISSN:1931-4973, 1931-4981
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Shrnutí:Photoplethysmography (PPG) is a simple and low‐cost optical technique that measures the blood volume change of the microvascular bed. The multichannel PPG recording system enables researchers to study the characteristics of the PPG signal from multiple body sites. Long‐time, continuous PPG signal monitoring helps doctors in medical diagnosis and treatment. However, the development of the PPG signal acquisition system is limited by storage capacity and computational and hardware capability. Limitation in storage capacity and communication efficiency can be addressed by introducing data compression algorithms. In this paper, a single‐channel, high‐resolution (24‐bit) wireless PPG data acquisition system using Bluetooth connectivity with the adaptive delta compression algorithm is presented. A graphical user interface was developed using MATLAB to interface with the system using a serial port profile. The PPG signals were decompressed and stored in the local hard drive for future analysis. The performance of adaptive data compression algorithm was evaluated with 12 healthy subjects. Results show that the compression ratio achieved is 41.5. The mean percentile root‐mean‐square (RMS) difference at the sampling frequency of 100 Hz is 0.13%. The mean normalized percentile RMS difference value is 9.78%. The system was successfully tested in a continuous acquisition mode for up to 60 min. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
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ISSN:1931-4973
1931-4981
DOI:10.1002/tee.22712