论文部分内容阅读
为了连续检测血红蛋白含量[Hb]和全血的氧饱和度OS,基于光散射理论模型,我们设计了一种反射型混合光传感器。试制的传感器包括发光二极管(LED)和光敏二极管,它们被安装于同一基片上,外套TO-5管壳,表面覆盖着透明的环氧树脂。LED发出的光波长是665nm和795nm,[Hb]就是利用基中795nm的光的反射的方法获得的,这一波长非常接近于具有相同吸光系数的波长805nm(在805nm光照射下,含氧血红蛋白和不含氧血红蛋白具有相同的吸光系数)。在测量血红蛋白的OS时,一般用双波长比的方法可以减少血
In order to continuously detect hemoglobin content [Hb] and whole blood oxygen saturation OS, we designed a reflective hybrid light sensor based on the light scattering theoretical model. The prototype sensor includes a light-emitting diode (LED) and a photodiode mounted on the same substrate with a TO-5 jacket and a transparent epoxy coated on the surface. The wavelengths of light emitted by LEDs are 665 nm and 795 nm, [Hb] is obtained by the reflection of light at 795 nm in the base, which is very close to the wavelength of 805 nm with the same extinction coefficient (irradiated with 805 nm light, oxyhemoglobin And non-oxygenated hemoglobin have the same extinction coefficient). In the measurement of hemoglobin OS, the general dual-wavelength ratio method can reduce blood