Assessment of stress level

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Dr. Jobbágy Ákos Andor
Department of Measurement and Information Systems

The thesis introduces the design and realization of a stress level measurement system based on galvanic skin reflex measurements.

A microcontroller-based hardware has been designed, and a program has been written that records and evaluates signals.

Throughout Chapter 1, I summarize what physiological background is necessary to comprehend the examinations, what similar instruments exist, and what other devices apply measurements based on similar principles.

In Chapter 2, I give an overall description on the design of the system, as well as the exact specifications.

In Chapter 3, I proceed from selecting the components to the assembly of the hardware. I specify the individual modules and their functions, while justifying my choices (of components).

In Chapter 4, I summarize the gist of embedded systems; further introduce the function of the microcontroller and how the whole system is controlled. I provide a fully detailed description of the logical parts, their exact functions and the writing of the embedded software.

In Chapter 5, I introduce the PC’s software: I describe what can be seen in the main window and how real-time display works. I present the general idea of the bio-feedback and how it is promoted by the GSR meter.

In Chapter 6, I describe the testing of the system.

Chapter 7 is on the measurement process itself. I demonstrate the course of examination, the functioning of the system as a whole, the human individuals (test subjects) examined, and the results of the examinations. It is revealed to what extent the system is capable of detecting stress-level fluctuations.

In Chapter 8 I reckon further, and in theory I propose a prototype for merchandise, and list what modifications might be necessary in comparison to the developer’s version.

Finally I review and evaluate the work done throughout the composition of the thesis, and examine other possibilities for further development.


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