| abstract |
| Background With the increasing number of traffic accidents caused by driver distraction and drowsiness, the need for Driver Monitoring Systems (DMS) is growing. While integrated DMS solutions are mainly limited to high-end vehicles, externally mounted DMS devices are often used in general vehicles. However, the size and installation position of external DMS can obstruct the driver’s field of vision or reduce recognition accuracy. This study aims to propose optimal installation positions and size guidelines to address these issues.
Methods Two DMS prototypes were developed: one based on the conventional product size (60×60×25mm) and another representing an ideally miniaturized size (40×20×10mm). Both prototypes were installed at nine different locations (A- I) inside the vehicle. Three participants (two males and one female), selected for physical diversity, evaluated each prototype under realistic driving conditions. Evaluation criteria included driver visibility, system recognition accuracy, and instrument cluster obstruction, all assessed quantitatively.
Result The smaller prototype (40×20×10mm) achieved the highest recognition accuracy and minimal visibility interference when installed at the steering column and rear-view mirror positions. In contrast, the larger prototype showed reduced recognition performance in positions with greater visibility obstruction, such as the top of the dashboard. These findings demonstrate that optimizing both size and installation location enhances system performance.
Conclusion This study empirically confirmed that reducing the size of externally mounted DMS and optimizing its placement improves both driver visibility and recognition accuracy. However, due to the small number of participants, the findings may have limitations in generalizability. Future studies should incorporate quantitative evaluation methods such as eye-tracking and video-based analysis to increase the reliability and applicability of the results. |
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| Key Words |
| 외장형 DMS, 운전자 시야 확보, 시스템 인식률, Externally Mounted DMS, Driver Visibility, System Recognition Rate |
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