An Optical Fiber Sensor for Simultaneous Measurement of pO<sub>2</sub> and pH

Whether in the monitoring of critically ill patients such as shock, respiratory failure, brain injury, or major anesthesia surgeries, it is necessary to evaluate patient’s pO2 and pH. An optical fiber sensor presented capable presence oxygen partial pressure (pO2) pH real-time. The based on fluorescence sensing polymer immobilized oxygen/pH-sensitive membranes covalently attached probe. design this uses LED light source, which an excitation inducing specific wavelengths membrane. intensity lifetime are related So can be measured by relationship between pO2/pH values fluorescence. signal conditioning system DSP STM32 was used store process data, display test values. response for with nitrogen (N2) a balancing gas laboratory performed. Finally, oxygen/pH scheme work intended using biological, medical environmental applications.