TECHNOLOGIQUE

A Global Journal on Technological Developments and Scientific Innovations
ISSN Online: 3028-1415 | Print: 3028-1407

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Original Research

Edge-Based AI System for Detecting Emotional Stress in Students Using Multimodal Thermal Imaging and Voice Analysis

Technologique: A Global Journal on Technological Developments and Scientific Innovations

ISSN Online: 3028-1415 | Print: 3028-1407

Volume 6 | Issue 1 | 2025 | 24 – 38

Baltazar P. Magdayao1, ORCID No. 0009-0000-4012-2668

Jean B. Villoga2, ORCID No. 0009-0007-6391-0713

Sonia Lyn B. Bolivar3, ORCID No. 0009-0009-0577-9176

Raylan A. Mondragon4, ORCID No. 0009-0000-1859-7325

1State University of Northern Negros, Barangay Rizal, Sagay City, Negros Occidental, Philippines
2State University of Northern Negros, Barangay Rizal, Sagay City, Negros Occidental, Philippines
3Iloilo State University of Fisheries Science and Technology, Barangay Tiwi, Barotac Nuevo, Iloilo, Philippines
4State University of Northern Negros, Barangay Rizal, Sagay City, Negros Occidental, Philippines

Article History:

Initial submission: 10 October 2025
First decision: 15 October 2025
Revision received: 17 December 2025
Accepted for publication: 20 December 2025
Online release: 26 December 2025

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Abstract

This study examined the development and evaluation of an artificial intelligence (AI)–based system designed to detect emotional stress among students using thermal imaging and voice analysis. The primary goal was to develop a user-friendly software interface capable of real-time processing within a personal computer environment. Thermal and voice data were collected from 30 student participants in a simulated classroom setting to train and validate the AI model. The system integrated convolutional neural networks (CNN) for thermal classification and recurrent neural networks for voice sequence analysis to interpret physiological and acoustic indicators of stress. Results showed that the combination of thermal and voice inputs significantly improved the accuracy and reliability of emotional state recognition compared to single-input systems. The multimodal fusion model achieved 91.4% accuracy in classifying stress states, with a strong correlation between AI-generated and self-reported stress levels (r = 0.86, p < .001). The AI model also demonstrated consistent responsiveness and operational stability, supporting its potential application in classroom monitoring. Overall, the integration of thermal imaging and voice analysis presents a promising tool for helping educators understand students’ emotional well-being and enhance the learning environment.

Keywords: Artificial Intelligence (AI), thermal imaging, voice analysis, emotional stress detection, educational technology, multimodal fusion

Cite this article

APA (7th edition)

Magdayao, B. P., Villoga, J. B., Bolivar, S. L. B., & Mondragon, R. A. (2025). Edge-based AI system for detecting emotional stress in students using multimodal thermal imaging and voice analysis. Technologique: A Global Journal on Technological Developments and Scientific Innovations, 6(1), 23–36. https://doi.org/10.62718/vmca.tech-gjtdsi.6.1.SC-1125-022

Author contributions

– (Not applicable).

Funding

This research received no external funding.

Conflict of interest

The author declares no conflict of interest.

Institutional ethics review statement

This study involved human respondents; however, formal ethical approval was not sought from the authors’ institution. The authors affirm that participation was voluntary, informed consent was obtained, and confidentiality of responses was strictly maintained. No procedures were undertaken that posed risk or harm to the participants.

Data availability statement

All data supporting the findings of this study are included within the manuscript and its supplementary materials.

Declaration of generative AI use/assistance

AI-assisted language editing was performed using ChatGPT; authors reviewed and approved all content.

Acknowledgement

– (Not available).

Publisher’s disclaimer

The views expressed in this article are those of the authors and do not necessarily reflect the views of the publisher. The publisher disclaims any responsibility for errors or omissions.

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