Mi band 4 has a big heart rate error? 1. Please make sure that the back of the bracelet is clean, dry and free of foreign objects. Excessive sweating during exercise causes the watch to slip, and sweat blocks the light path, which may lead to inaccurate heart rate measurement. Please dry your sweat before putting it on.
2. It is recommended to use a soft rubber strap, so that the device can fit the wrist better and the monitored data is more accurate.
3. People's heart rate is not stable, even at rest, the heart rate data will fluctuate in a small range. After strenuous exercise, the heart rate value will jump greatly after continuous measurement, which is due to the rapid decline of human heart rate itself, which is also a normal phenomenon. When you stand, sit, eat and drink, the range of heart rate data will increase accordingly.
4. Exercise regularly (such as running, walking, cycling, etc.). ) It is easier to accurately measure the heart rate, but irregular exercise (such as playing ball and moving freely) is not necessary, nor is wrist strength exercise (such as weightlifting).
5. It may also be caused by hardware failure. It is suggested that Xiaomi Service Center check before and after.
This paper takes mi band 4 as an example for application.