Akademik Veri Yönetim Sistemi
3rd International Congress on Scientific Advances (ICONSAD’23), Ankara, Türkiye, 20 - 23 Aralık 2023, cilt.1, ss.91-101, (Tam Metin Bildiri)
Temperature measurement is vital for energy efficiency, industrial production processes, medical applications, and monitoring the impacts of climatic changes. Precise and accurate temperature measurement of food in the production phase, electronic devices we use, stored medicines, or sick people is necessary to fulfill factors such as safety, quality, performance, and efficiency. The 𝑃𝑇100 sensor for temperature measurement is widely used in the aforementioned areas due to its high sensitivity, durability, and reliability. This sensor uses the temperature sensitivity of platinum resistance to measure temperature changes. In this study, a new temperature measurement circuit with a 𝑃𝑇100 sensor and an 𝐴𝐷623 differential amplifier was designed and implemented for use in applications where precise temperature changes are important. The 𝑆𝑇𝑀32𝐹4 microcontroller produced by STMicroelectronics, designed for applications in areas such as robotics, industrial electronics, and power electronics, was used in the circuit. In the design phase, all equations required for temperature measurement were derived, and the parameter values of the circuit were determined according to the desired temperature measurement range. The circuit was then implemented according to the specified parameter values and proceeded to the application phase. A prototype system consisting of a ceramic heater, relay board, 𝑆𝑇𝑀32𝐹4 microcontroller, and temperature measurement circuit was used for the test. Real-time measurement results were obtained by placing the sensor at different distances on the system, and the results are presented in graphs. The results confirmed the design of a measurement system capable of detecting temperature changes with an accuracy of 0.025°𝐶.