ECG Signal Processing Method and Apparatus

An electrocardiograph (ECG) signal processing method, comprising:

• collecting, by a measurement device, an ECG signal;
• extracting, by the measurement device, a kth valid QRS complex of the ECG signal, the QRS complex comprising a first extreme point (Q) before a peak point (R) of an ith R wave, the R of the ith R wave, and a second extreme point (S) after the R of the ith R wave, i≥two, k≥two, and the k≤the i;
• calculating, by the measurement device, a kth time difference and a (k+1)th time difference, the kth time difference being a time difference between an R of an R wave in the kth valid QRS complex and an R of an R wave in a (k+1)th valid QRS complex, and the (k+1)th time difference being a time difference between the R of the R wave in the (k+1)th valid QRS complex and an R of an R wave in a (k+2)th valid QRS complex;
• setting, by the measurement device, the kth time difference and the (k+1)th time difference as target time differences when the kth time difference and the (k+1)th time difference are within a preset range, and an absolute value of a difference between the (k+1)th time difference and the kth time difference is less than a preset threshold;
• and
• setting, by the measurement device based on the kth time difference and the (k+1)th time difference, a time difference having a smaller deviation from an average time difference as a target time difference when the kth time difference and the (k+1)th time difference are within the preset range, and the absolute value of the difference between the (k+1)th time difference and the kth time difference is greater than or equal to the preset threshold, the average time difference being an average value of all target time differences from a first time difference to a (k−1)th time difference, and the target time difference calculating a heart rate value corresponding to the ECG signal.

A wearable device, comprising:

• a power supply;
• a heart rate collector coupled to the power supply and configured to collect an electrocardiograph (ECG) signal;
• a memory coupled to the heart rate collector and the power supply and configured to store instructions;
• and
• a processor coupled to the heart rate collector, the power supply, and the memory, the instructions causing the processor to be configured to:
• obtain the ECG signal;
• extract a kth valid QRS complex of the ECG signal, the QRS complex comprising a first extreme point (Q) before a peak point (R) of an ith R wave, the R of the ith R wave, and a second extreme point (S) after the R of the ith R wave, i≥two, k≥two, and the k≤the i;
• calculate a kth time difference and a (k+1)th time difference, the kth time difference being a time difference between an R of an R wave in the kth valid QRS complex and an R of an R wave in a (k+1)th valid QRS complex, and the (k+1)th time difference being a time difference between the R of the R wave in the (k+1)th valid QRS complex and an R of an R wave in a (k+2)th valid QRS complex;
• set the kth time difference and the (k+1)th time difference as target time differences when the kth time difference and the (k+1)th time difference are within a preset range, and an absolute value of a difference between the (k+1)th time difference and the kth time difference is less than a preset threshold;
• and
• set based on the kth time difference and the (k+1)th time difference, a time difference having a smaller deviation from an average time difference, as a target time difference when the kth time difference and the (k+1)th time difference are within the preset range, and the absolute value of the difference between the (k+1)th time difference and the kth time difference is greater than or equal to the preset threshold,
• the average time difference being an average value of all target time differences from a first time difference to a (k−1)th time difference, and
• the target time difference calculating a heart rate value corresponding to the ECG signal.