Hrv-data preprocessing method and apparatus, and electronic device

An electronic device, comprising:

• at least one processor;
• a memory;
• and
• at least one application stored in the memory and configured to be executed by the at least one processor to implement an HRV-data preprocessing method, the method comprising:
• obtaining HRV data corresponding to a sliding window;
• determining, based on the HRV data, a plurality of target peaks corresponding to the HRV data, calculating a variance of the plurality of target peaks, and determining HRV data having the variance that falls within a predetermined variance range as first target HRV data, wherein the plurality of target peaks are peaks in the HRV data that exceed a voltage threshold;
• and the voltage threshold is determined by:
• determining a maximum amplitude difference between a first upper envelope and a first lower envelope of the HRV data, determining a product of the maximum amplitude difference and a predetermined percentage threshold, and determining a sum of the product and an amplitude of the first lower envelope corresponding to the maximum amplitude difference as the voltage threshold;
• determining an RR interval sequence of the first target HRV data based on the plurality of target peaks of the first target HRV data, determining whether each RR interval in the RR interval sequence falls within a predetermined heartbeat time interval range, and determining, from the first target HRV data, HRV data for which all RR intervals fall within the predetermined heartbeat time interval range as second target HRV data;
• and
• extracting a time-domain feature, a frequency-domain feature, and a nonlinear feature of the second target HRV data.