Sistem Pemantauan Tekanan Tabung Oksigen Berbasis SMS Gateway

Abstract

Medical gases such as Oxygen (O2) and Nitrous Oxide (N2O) are used in healthcare facilities, including NICUs and ICCUs. Medical gas pressure monitoring is essential, but it often relies on regular regulators without pressure detectors, potentially harming patients. The study developed a GSM-based digital monitoring system to send oxygen cylinder pressure data via SMS, enabling real-time monitoring by medical personnel and relatives. The GSM method was chosen because of its wide range and reliability over bluetooth, infrared, and limited WIFI. The system offers more effective and reliable monitoring for the stability of patient care. This tool is designed using the SIM800L module as a means for remote monitoring using the SMS Gateway method, with the Atmega328 microcontroller functioning as a controller. The gas pressure is measured through a special combination of a regulator with a hose. The pressure on the hose is known by the Pressure Tranducer Transmitter sensor as a detector of oxygen gas pressure. The readings from the sensor are sent to the Atmega328, and the pressure output will be displayed on the LCD as well as the SMS sent to the user's mobile phone. This device is also equipped with a buzzer that functions as an alarm when the pressure condition of the oxygen cylinder begins to be critical. The tool testing process is carried out at a pressure of 0 to 72.5 Psi with the recording of the pressure value at each Psi increase. The process of testing the device is carried out by comparing the pressure read by the tool and the pressure shown by the oxygen cylinder manometer. The results of the study showed that the pressure value of the tube shown by the tool was the same as the pressure value of the tube on the manometer. This shows that the tool has functioned properly with a % error value = 0.6%. The development of the next tool is expected to integrate tube pressure information with a nurse call system to make it easier to monitor the patient's condition and oxygen. In addition, it is recommended to manually add details such as phone numbers and room data to the device as well as the addition of a notification system for the remaining time oxygen will run out.