DEVELOPMENT OF OXYGEN CONCENTRATORS AND OKSIMETERS FOR SPO2 THERAPY: OPTIMIZATION OF PSA SYSTEM CONTROLLER ALGORITHMS

• Main Author: Adira Prayoga, Galang
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/73245
• Institution: Institut Teknologi Bandung

Oxygen therapy activities given to patients with respiratory disorders (Hypoxemia) and low oxygen saturation (SpO2) depend on the level of purity of supplemental oxygen (O2%) and the duration of use. There are several options to choose from, namely stationary and mobile oxygen concentrators (Oxycon) which have medical O2 standards (purity > 82%). The challenge in the manufacture of Oxycon was how to build a device capable of stably producing ? 95% pure oxygen and with a steady stream of oxygen supplied to patients at higher ranges (such as 5 to 80 Lpm) for special medical needs. In addition, conducting oxygen therapy, it is necessary to pay attention to the duration of its use and the effects it causes. Therefore, the goals of therapy can be fulfilled without causing side effects that are harmful to health. Therefore, based on the problems faced and the challenges that exist, the purpose of this multidisciplinary study is to analyze the physical sub-system, find an optimal pressure swing adsorption (PSA) system control algorithm to be applied to stationary and mobile oxygen concentrators, and develop an Oximeter to monitor SpO2 levels in patients. To achieve this goal, the PSA method is applied by finding the cycle time and air pressure distribution engineering that is in accordance with Oxycon's production capacity to produce pure oxygen as expected. Then to fulfill the patient's SpO2 monitoring system, an Oximeter is needed that is dependable in the aspect of measurement and its real-time telemetry system. Based on experimental studies that have been carried out, it is known that the appropriate cycle time for Oxycon with a capacity of 5 Lpm is 4000 milliseconds for the duration of absorption in a zeolite tube with a saturated air pressure of 200 kPa and the application of a 1mm orifice to stabilize the pressure between the tubes. The real- time telemetry system on the Oxycon and Oximeter devices shows that the data sent to the server is reliable with an average delivery time of 2.511 milliseconds every 2 seconds from the gateway. This means that the delay time occurs is only 0.511 milliseconds. Therefore, based on the experimental results obtained, the proposed system is feasible for a comprehensive telemedicine system.