PD Based Cost Effective and Accurate Calorimeter Temperature Control and Measurement System

Temperature measurement is a vital process that is used in almost every industry. To control the temperature at a required fixed value, different types of controllers are used. The problem addressed in this research is to control and measure the temperature of the calorimeter's heating element for the desired target temperature. In this paper, a PD controller-based temperature control and measurement system have been designed to solve this problem. A PD controller is integrated with the Arduino mega 2560 and LabVIEW software to monitor and control the real-time temperature of the heating element of the calorimeter. Resistance Temperature Detector (RTD) sensor is used for temperature sensing in the calorimeter. A sensor consistently delivers the temperature of the heating element to the Arduino microcontroller in the form of voltage through an analog to digital converter (24-bit ADC) module. PD algorithm is used to tune the pulse width modulation (PWM) signal timely according to the error signal. PC based LabVIEW software is used to design Graphical User Interface (GUI) for the control system to compare and store the data of actual temperature coming from the microcontroller with target temperature and also used to tune the PD controller according to the current error signal. Form the results; it is revealed that PD is an efficient controller for controlling and tracking the temperature of the heating element of calorimeter towards the randomly selected different target temperature (52°C, 65°C, 75°C, 85°C). This temperature control approach has a simple structure, fast reaction speed, excellent stability, and high precision.