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The value of blood oxygen monitoring technology on smart watches

已更新:2021年8月18日



Since Apple added the blood oxygen function to Apple Watch series 6, in just two months, major manufacturers have also launched smart watches with blood oxygen measurement functions, such as vivo WATCH, Huawei Watch GT2, Honor Watch Almost all flagship smart watches such as GS Pro, VeePoo WATCH RIG, Huami Amazfit GTR 2 and GTS 2 include this feature.

Why has the blood oxygen sensor become the new favorite of smart watches overnight?

The blood oxygen monitoring function on the smart watch mainly judges whether the human body is healthy by monitoring the human arterial blood oxygen saturation. Blood oxygen saturation refers to the percentage of hemoglobin combined with oxygen in the blood, that is, the concentration of blood oxygen in the blood. Blood oxygen saturation is an important standard for measuring human health.

“All diseases start from hypoxia.”-Nobel Prize winner Hideyo Noguchi, Doctor of Medicine from Japan

Under normal circumstances, blood oxygen saturation is maintained at 94%. Low blood oxygen saturation can cause serious systemic complications, such as nervous system hypoxia, which can cause headaches, dizziness, irritability, mental disorders and even coma; cardiovascular hypoxia can cause myocardial ischemia, and severe cardiac arrest Stop, heart failure; hypoxia in the respiratory system can lead to respiratory failure and respiratory arrest. Blood oxygen saturation is not as high as possible, but should be kept within the normal range. Because excessive oxygen intake (such as inhaling pure oxygen) for a certain period of time will cause oxygen poisoning, which is harmful to health. Ordinary people want to keep the blood oxygen level at a normal level, one is to keep the air fresh and circulated, and the other is to strengthen cardiopulmonary exercises, enhance breathing ability and blood transport ability.

So how does the wearable smart watch perform blood oxygen monitoring?

Wearable smart watches monitor blood oxygen saturation mainly through optical sensors. The optical sensor irradiates the skin with red light and infrared light, and then obtains the red light and infrared light reflected by the blood vessels under the skin, and finally calculates the blood oxygen through an algorithm. The optical sensor is the core of blood oxygen measurement, and the accuracy of the optical sensor is very important to the accuracy of the measurement result.

At present, major companies in the industry are taking various measures to improve accuracy. The main way is to improve the accuracy and number of sensors.

VeePoo Watch RIG has built-in high-precision photoelectric sensors, 7 groups of light path designs, 6 LED light sources, 3 electrodes and advanced blood oxygen monitoring algorithms, using green, red, infrared, and infrared LEDs to calculate blood oxygen content. It also uses intuitive data to let the wearer know the status of the body’s absorption of oxygen and the amount of oxygen delivered to the body. At the same time, VeePoo Watch RIG not only has the function of blood oxygen monitoring, but also other monitoring functions, such as blood pressure, heart rate, scientific sleep, etc., effectively helping the wearer to have a more comprehensive understanding of their overall health.

It is foreseeable that with the application of blood oxygen monitoring functions to wearable smart watches, more medical monitoring technologies will be applied to smart watches in the future. Currently, the industry is studying how to improve the accuracy of blood glucose monitoring and apply it to smart watches. VeePoo health&tech (VeePoo Health&Tech Co., Ltd.) has reached 70% of blood glucose monitoring and will soon be applied to the device.

Smart watches will play a greater role in the health field.

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