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Zapytanie: CHWIEDORUK
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Tytuł oryginału: Simple telemetry system for ECG recording.
Autorzy: Pietraszek Stanisław, Chwiedoruk Sebastian
Źródło: Pol. J. Med. Phys. Engin. 2002: 8 (3) s.193-198, il., bibliogr. 5 poz.
Sygnatura GBL: 306,499

Hasła klasyfikacyjne GBL:
  • kardiologia

    Typ dokumentu:
  • praca techniczna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie

    Streszczenie angielskie: This work presents a simple telemetry system that provides possibility of local heart rate monitoring and transmission of ECG signals to a PC computer via an infrared data link within the distance of few meters. The proposed telemetry system consists of a patient unit (ECG amplifier, A/D converter, infrared transmitter), and a PC unit (infrared receiver, serial RS232 link and software). Amplifield ECG signal is sampled 250 times per second, and a 10-bit A/D conversion is performed by a microcontroller PIC16F877, the main part of the microcontroller program is connected to a QRS detector. Digital filters are matched to an average QRS during sinus rhythm from a well known pass-band filter with a center frequency of 16.7 Hz and Q factor of 4.7. The heart rate (HR) is computed as an average of 4 from 7 last detected R-R intervals, where two shortest and one longest interval are rejected. The above alghoritms provide high quality recording of ECG signal during rest and exercise.

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