[Selector of R waves in electrocardiosignals, distinguishing signals by geometric characteristics]

The informative reliability of automated ECG analyzers operating under dynamic conditions is mainly dependent upon the noise immunity of R-wave selectors. The selector is developed that selects sequentially input positive spikes, at first, for the rate of negative slope and, then, for its duration thus providing much greater noise immunity as compared to commonly used models with built-in band-pass or resonant filters. So, the errors of detecting events for one of the test-signals for above selectors are 1,8%, 22% and 17%, respectively.