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How smartwatch works on SPO2 Monitoring?

In the field of health wearables, smart technologies continue to overcome difficulties, allowing users to combine health and intelligence. In the last article, we talked about the meaning and significance of blood oxygen. Blood oxygen is a very important indicator of our human body, and we need to pay attention to it in our daily life.

In addition to traditional monitoring methods, today's smart wearable products have been able to achieve daily blood oxygen monitoring. Let's talk about the principle of blood oxygen monitoring on smart watches and discuss what kinds of people need to SPO2 Monitoring.


How the SPO2 monitoring works?

Like HR monitoring, blood oxygen monitoring is also based on the principle of optical reflection, relying on the built-in SpO2 sensor of the smart watch for real-time monitoring. First of all, we have to know that we have hemoglobin and oxyhemoglobin in our blood, and then their absorption ratios of infrared and red light are different. Therefore, the smart watch can emit two LED lights, infrared light and red light, and measure the absorption spectrum of the reflected light in our blood to measure the blood oxygen content.


Through the different frequencies of light reflection by hemoglobin and oxyhemoglobin, a series of data are obtained, and then combined with the algorithm built in the smart watch to calculate the wearer's blood oxygen value. So whether the blood oxygen monitoring of a smart watch is accurate, we need to look at the lens material it uses (the better the lens, the better the light source projection, and the more accurate the data feedback) and the algorithm technology they use.

Take veepoo's smart watch as an example, their blood oxygen monitoring uses a comprehensive Fresnel optical lens, light source incidence angle, recovery angle light sensitive device and various application conditions to build a structure, and then combines veepoo's independent patent algorithm for accurate blood oxygen monitoring.


Who needs daily SPO2 monitoring?

Elderly group

As we get older, our heart and lung organs will gradually age physiologically, and the hematopoietic function will also weaken, and our oxygen is transported by the porter of blood, so the oxygen supply in the body will decrease when we get older, so the elderly It is necessary to carry out daily blood oxygen monitoring. If the blood oxygen is found to be lower than the horizontal line, supplement oxygen immediately. Veepoo RIG has a low oxygen reminder function. Once your blood oxygen value is too low, the watch will issue a warning prompt.


Heavy workload

Work intensity can put a load on the body, which can also affect blood oxygenation. Oxygen consumption of the brain accounts for 20% of the oxygen consumption of the whole body, and the oxygen consumption of the brain is bound to rise due to the transition of mental work. The human body can take in limited oxygen, resulting in insufficient oxygen to make ends meet. In addition to causing problems such as dizziness, fatigue, poor memory, and unresponsiveness, severe cases may cause serious damage to the heart muscle of the brain, and even risk death from overwork (sudden death).


People with vascular disease

There is lipid deposition in the vascular lumen, and the blood is not smooth, which will lead to difficulty in supplying oxygen. In cardiovascular and cerebrovascular patients, the blood is thick, coupled with coronary arteriosclerosis, and the vascular cavity is narrowed, resulting in poor blood supply and difficulty in supplying oxygen. Severe hypoxia will cause "myocardial infarction" and "cerebral infarction". If oxygen is not provided in time for emergency treatment, sudden death will occur.


People with respiratory problems

We are all very familiar with snoring, but it is actually a respiratory problem. If the snoring is severe, it may also cause apnea, which may lead to hypoxia. Causes different degrees of damage to the heart, lungs, brain and even kidneys.


People who regularly do extreme sports or go to high altitudes

Athletes often perform extreme training, and blood oxygen monitoring helps to understand the status of the athlete's blood circulation and adjust training. At high altitudes, we are prone to altitude sickness, and the so-called altitude sickness is actually caused by the lack of oxygen in our body. We should monitor blood oxygen at any time during high-altitude activities to avoid cyanosis caused by high altitude.



Wearable devices for real-time blood oxygen monitoring

For ordinary people, it may be impractical to buy professional equipment for continuous blood oxygen monitoring, but we can use wearable devices for daily blood oxygen monitoring to help improve our health. However, what we need to know is that blood oxygen monitoring is only a means to provide data feedback for users, so if we want to really improve our health, we must start from the root, combine smart watch monitoring, maintain good living habits and exercise more, which is the truth.

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