Analysis of Temperature Sensors with Proportional and Derivative Controls Applied to Infant Incubators

Premature babies born before 37 weeks of gestation or babies born with a weight criterion of less than 2500 grams are very susceptible to viruses if they are kept in an open space. Therefore, they need to be they need to be taken care for in a baby incubator that will protect premature babies. An incubator is critical in the survival of premature newborns. Temperature management is one of the most important roles of a baby incubator, as it is essential to create thermo-neutrality in an infant's body. The purpose of this study was to analyze the temperature sensor in an infant incubator using proportional and derivative controls. To obtain a stable and precise temperature, this temperature sensor complies with hospital infant incubator standards. This study used the LM35 and DS18B20 temperature sensors and used the Atmega 2560 Microcontroller where the temperature will also be displayed on a computer using serial communication. Temperature data were obtained based on the measurement results at all set points on the LM35 sensor. In this case, the rise time is 6 minutes 20 seconds, the average overshoot is 2.2°C, and the time to reach steady-state status is 25 minutes. Meanwhile, on the DS18B20 sensor, the average rise time is 6 minutes, the overshoot is 1.2°C on average and the time to reach a steady-state is 23 minutes. It can be considered that the DS18B20 sensor is superior to the LM35 sensor because it has a faster average rise time and steady-state and the overshoot on the DS18B20 sensor is still within tolerance limits.