Microcontroller-based real-time QRS detector for ambulatory monitoring

Author

Meissimilly, G. ; Rodríguez, J. ; Rodríguez, G. ; González, R. ; Cañizares, M.

Author_Institution

Div. of Med. Devices, Central Inst. for Digital Res., Havana, Cuba

Volume

3

fYear

2003

fDate

17-21 Sept. 2003

Firstpage

2881

Abstract

The design and test results of a real-time QRS detector are presented. The detector is based on the Hamilton-Tompkins backward difference algorithm. The QRS detection relies upon the frequency response of a bandpass filter for power-line interference cancellation, base-line wander removal, and high-frequency muscle bursts purging. Differentiation and squaring further improved the signal-to-noise ratio for an adaptive threshold decision stage. The accuracy of the QRS detector was tested with signals like the artificial test waveform established in the ANSI/AAMI EC13-1992 standard but purposely corrupted with noise. An average QRS detection error rate of 0.2% was achieved during the tests.

Keywords

electrocardiography; medical signal detection; medical signal processing; patient monitoring; portable instruments; real-time systems; ECG; Hamilton-Tompkins backward difference algorithm; QRS detection error; ambulatory monitoring; bandpass filter; base-line wander removal; high-frequency muscle bursts purging; microcontroller; power-line interference cancellation; real-time QRS detector; ANSI standards; Band pass filters; Detectors; Frequency response; Interference cancellation; Monitoring; Muscles; Noise cancellation; Signal to noise ratio; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7789-3

Type

conf

DOI

10.1109/IEMBS.2003.1280520

Filename

1280520