Where is the switch for Huawei Sports Health continuous measurement of heart rate?
Health detection and exercise detection are the core functions of smart wearable devices, and many of Huawei's smart watches or smart bracelets can support it. Continuously measures heart rate. So where is the switch for Huawei Sports Health continuous heart rate measurement?
Where is the switch for Huawei Sports Health continuous heart rate measurement?
1. Open Huawei Sports Health APP, enter the watch details page, and click Health Monitoring.
2. Click Continuous Heart Rate Measurement and turn on the switch on the right side of Continuous Heart Rate Measurement.
This article takes Huawei WATCHGT2e Huawei p40 as an example and is applicable to HarmonyOS2.0 system Huawei Sports Health V11.0.5 version
The principle is as follows:
Use light transmission or reflection The blood (pulse) flowing in the blood vessels is used to detect the pulse rate, which is usually equal to the heart rate. At present, most bracelets use this principle to detect heart rate, also known as the photoelectric method.
Currently, most smart bracelet heart rate monitoring methods use the photoelectric method. Their obvious feature is that the sensor parts are equipped with green LED lights.
The method of measuring heart rate is simply based on the principle of light absorption by substances. The green LED light of the smart wearable device is combined with the light-sensitive photodiode to illuminate the blood vessel for a period of time. Since the blood is red, it can It reflects red light and absorbs green light. When the heart beats, the blood flow increases, and the amount of green light absorbed will increase accordingly. When the heart beats, the blood flow will decrease, and the absorbed green light will also decrease.
Thus, heart rate can be measured based on the absorbance of the blood.
What does the smart bracelet rely on to test heart rate?
The method for smart bracelets to test heart rate is as follows:
1. Photoelectric transmission measurement method
This method mainly uses the principle of blood transmittance. Under normal circumstances, the beating of the human heart actually causes a certain amount of damage to the blood transmittance, and the information generated by this change will be turned into an electrical signal under the action of the smart bracelet, and then through the electrical signal It can reflect the heart rate information. By adding a photosensitive receiver to the bracelet, you can better monitor heartbeat changes.
And under certain conditions, blood circulation remains relatively constant, but when the heart beats faster and the blood circulation in the body speeds up, the photosensitive receiver on the smart bracelet can receive More light energy. When the smart bracelet senses greater light intensity, it means the heart beats faster, so specific data can be displayed.
2. ECG signal detection method
This detection method is actually the same as the electrocardiogram detection in the hospital. When a person's mood fluctuates, the heart beats faster. When the heartbeat occurs, the atrium and ventricle will actually become more excited, so the activity of myocardial cells will also accelerate. Then the smart bracelet can detect the ECG signal by detecting the activity of myocardial cells, because the irregular movement of myocardial cells is It can cause changes in electrical potential, and this ECG signal is the detected heart rate data.
In fact, using a smart bracelet to detect heart rate is also a relatively healthy method. After all, if there is no data display of your own heartbeat, your feelings will still be inaccurate. Sometimes you feel that your heartbeat is very fast. But the displayed data is within the normal range. But sometimes it feels like the heartbeat is normal, but in fact the data displayed on the electrocardiogram is abnormal.
Wearing a smart bracelet with you can monitor your heart health 24 hours a day. In addition to detecting heart conditions, it can also detect sleep quality, etc. It is a very practical product.