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Journal : Jurnal Ilmiah Dan Karya Mahasiswa

Rancang Bangun Thermohygrometer dengan Sensor Pemantauan Gas Medik Berbasis Internet Of Things (IoT) Setyo Adi Nugroho; Yuli Siyamto; Fitri Anindyahadi; Mahardira Dewantara
Jurnal Ilmiah Dan Karya Mahasiswa Vol. 3 No. 1 (2025): JURNAL ILMIAH DAN KARYA MAHASISWA (JIKMA)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jikma.v3i1.2867

Abstract

A thermohygrometer is a device used to measure temperature, humidity, and the concentration of medical gases (CO and CO₂) in operating rooms. The temperature in an operating room should be maintained between 19°C and 24°C, and humidity between 45% and 65%, to prevent damage to electronic equipment and corrosion caused by low temperatures and high humidity. Medical gases containing oxygen can also accelerate corrosion. Therefore, a thermohygrometer equipped with medical gas readings is necessary. This study aims to design a thermohygrometer using a DHT22 sensor to measure temperature and humidity and an MQ-135 sensor to detect CO and CO₂ gases. The obtained data is displayed on an I2C LCD screen and sent to the Blynk application via WiFi using an ESP32. Testing shows a temperature reading error of -0.02%, humidity -0.02%, CO gas 0.32%, and CO₂ -0.16%, all within a tolerance limit of ±5%.
Perancangan Alat Monitoring Gas Medis N2O Berbasis ESP32 Setyo Adi Nugroho
Jurnal Ilmiah Dan Karya Mahasiswa Vol. 1 No. 2 (2023): APRIL: JURNAL ILMIAH DAN KARYA MAHASISWA
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jikma.v1i5.890

Abstract

Medical gas installation is an important aspect in which gas availability must always be maintained and guaranteed. One of the monitored gases is N2O gas. The medical gas monitoring system must always be carried out regularly, but sometimes in conditions in the field there are still many medical gas monitoring systems that still use analog manometers so that the results obtained are sometimes inaccurate so that it can cause a condition that is dangerous for the patient. Then a digital monitoring system was created that could display in real time using the SKU237545 sensor and the ESP32 microcontroller as the center of the system that processes data. The test results from the tool that has been made get the largest error of 0.08% at a pressure of 2 Bar and the smallest error of 0.01% at a pressure of 4, 5 and 6 Bar and the purity of N2O gas is not affected by the size of the pressure. Thus this tool is feasible to use because the work system is in accordance with the conditions and conditions of the existing tools in the field.