| 摘要 |
Disclosed is a method for measuring blood oxygen saturation, wherein the method comprises: sending a first measurement light, a second measurement light and a reference light to the body surface skin (10) of the object to be measured, and receiving the reflected light of the first measurement light, the second measurement light and the reference light (S101); obtaining a first difference value and a second difference value, wherein the first difference value is the difference in the rate of change of the light intensity between the first reflected light and the reference reflected light, and the second difference value is the difference in the rate of change of the light intensity between the reference reflected light and the second reflected light (S102); and obtaining, by calculation, the ratio x of the first difference value and the second difference value, and calculating the blood oxygen saturation y in accordance with the ratio x (S103). Accordingly, disclosed is a portable device (20) for measuring blood oxygen saturation. Using the above-mentioned method and the portable device (20), the real-time accurate measurement of blood oxygen saturation can be achieved. |
