Development of a Temperature Compensation Board for Pressure Sensors

Abstract

This study is based on an internship project in collaboration with Taipro Engineering. It presents the development of a compensation board that aims to improve the accuracy and stability of pressure sensor readings across varying temperatures. The project is driven by industrial needs, where precise and fast measurements are essential. In this case, the board has to achieve compensation with a minimum sampling rate of 70 kHz while keeping an output error below 1%. The first part introduces the basic principles of pressure sensors and the industrial context. It also provides a comparison between existing compensation techniques. The project requirements and constraints are outlined to establish a clear framework for development. Therefore, a feasibility study is conducted to compute an error estimate and validate the suitability of the project. Based on this, a polynomial compensation model is selected. The architecture of the second part of the project is divided into hardware and software modules. The hardware section covers the schematic and PCB layout, while the software section includes communication protocols between the components of the PCB as well as the user interface. Once the full implementation of the system is completed, a series of experimental tests are carried out to validate the performance of the board, confirming the compensation design. The results demonstrate that the development of the compensation board largely meets the defined requirements and opens the door for future improvements. However, it would require more tests to fully validate the board.