Authors:
Mohammadreza Robaei
1
;
Yesim Serinagaoglu Dogrusoz
1
and
Fikret Küçükdeveci
2
Affiliations:
1
Middle East Technical University, Turkey
;
2
Kardiosis Ltd., Turkey
Keyword(s):
Electrocardiography, Serial Peripheral Interface, General Purpose Parallel Bus, Recording Unit, Main Unit, Sub-microcontroller, Main-microcontroller.
Related
Ontology
Subjects/Areas/Topics:
Applications and Services
;
Biomedical Engineering
;
Biomedical Signal Processing
;
Computer Vision, Visualization and Computer Graphics
;
Medical Image Detection, Acquisition, Analysis and Processing
Abstract:
In this study, we developed a conceptual design for a high resolution multichannel ECG data acquisition
system for recording of electrical activity of the heart. The system has modular architecture, both in
hardware and software layers. It consists of several recording units controlled by sub-microcontrollers, and
one main unit that contains the main-microcontroller. Special distributed message based operating system
has been developed and embedded to sub-microcontrollers and main-microcontroller to provide
communication between them. The operating system is accomplished by the General Purpose Parallel Bus
(GPPB) developed for this design. GPPB is responsible to convey commands, data, addresses, and
handshaking messages. In each recording unit, 8 channels have been sampled by octal simultaneous 24-bit
high resolution S-? analog-to-digital converter. Sampled data is read out via Serial Peripheral Interface
(SPI) by the corresponding sub-microcontroller. Then, data in the sub-
microcontrollers are transferred to the
main-microcontroller using GPPB. At the last step, recorded data is sent from the main-microcontroller to
the computer using USB interface.
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