Title :
A novel method for analog measuring of pulse width and rise time of defibrillating shocks
Author :
Nohama, Percy ; Crespi, Lorenjan M. ; Farias, Maria A C
Author_Institution :
Rehabilitation Eng. Lab., Parana Pontifical Catholic Univ., Brazil
Abstract :
A novel method and the instrumentation developed for analog measuring of pulse width (T10 or T50) and rise time (T10-90) of cardiac defibrillator discharges are presented. The input pulse is applied to an analog delay network and to a peak detector which determines reference voltages. Those phase-shifted signals go to a comparator that generates the control pulse. A counter and a decoder excite the LCD display that shows the measured parameters with accuracy better than 0.33%
Keywords :
comparators (circuits); defibrillators; peak detectors; prosthetics; pulse measurement; sample and hold circuits; LCD display; LV pulses; analog delay network; analog measuring method; analog memory; cardiac defibrillator discharges; comparator; control pulse; decoder; defibrillating shocks; instrumentation; peak detector; phase-shifted signals; pulse width; reference voltages; rise time; Counting circuits; Decoding; Detectors; Instruments; Pulse generation; Pulse measurements; Signal generators; Space vector pulse width modulation; Time measurement; Voltage;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802395
