Temperature sensors are nowadays key components of modern electronic devices.
At the Faculty of Electrical Engineering, within the framework of the course
Sensors and Measurement Transducers, a new platform for testing temperature
sensors is needed.
This thesis presents the design and testing of a temperature-controlled demonstration
platform that addresses the shortcomings of similar systems (from the
literature and industry), as well as the specified performance requirements. These
include the ability to set the temperature from 10 °C to 80 °C, stable operation
without static error, and adequate dynamics (temperature change from minimum
to maximum within a maximum of 10 minutes).
The platform consists of a Peltier element, a power converter, a myRIO platform,
and connecting circuitry. A heat sink with a fan is mounted on one side
of the Peltier element, while a metal plate, whose temperature is controlled, is
attached to the other side. Thermistors are installed on both sides of the Peltier
element for temperature measurement. A graphical user interface was developed
in the NI LabVIEW software environment, allowing for monitoring of the system
status and setting of the desired temperature. The power converter operates with
pulse-width modulation, enabling continuous and stable operation across the entire
operating range. The demonstration platform was tested at various operating
points, and the system’s response to external disturbances was verified.
The results of the performance testing confirm the suitability of the platform
for use in laboratory exercises.
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