Dynamic characteristic analysis method of real-time tendency of heart state
A technology of dynamic characteristics and analysis methods, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problem of inability to fully describe the physiological/pathological characteristics of the heart, the inability to divide the heart activity state, and the inability to describe the heart state and heart state dynamics learning adaptability
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[0018] The present invention will be further described below in conjunction with drawings and embodiments.
[0019] 1. Acquisition of RR ECG interval. The ECG waveform is obtained by the following device, which consists of body surface electrodes and high input impedance, low noise, high common-mode rejection ratio ECG amplifier; 12-bit A / D converter; XSCAL ARM embedded processing system;
[0020] 2. Time-series heart rate discrete variation scatter point analysis method and analysis method for extracting cardiac dynamic characteristic parameters and trend characteristic parameters:
[0021] a) The wavelet transform extracts the RR interval from the QRS complex of the 3 / 5-lead ECG. Such as figure 2 Calculate the RR interval as shown in the right sub-figure, such as figure 2 The coordinate points of the scatter plot are calculated as shown in the left sub-figure, and the current RR interval (RR n+1 ) to the previous RR interval (RR n+1 ) to form a sequence even two-dimen...
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