다중센싱 진동 인터페이스: 웨어러블 기기의 UX에 미치는 영향을 중심으로

Abstract

Objective: Based on the two points threshold of vibration stimulation, this paper determines the vibration stimulation type and design variables of the Multi-sensing Vibration Interface. and performs the verification of whether it is compatible with the actual cognitive direction when directional information is provided to the wrist using Multi-sensing wearable device designed on the basis of these results. Background: Most of the dangerous situations around us are accompanied by noise. However, pedestrians who are unable to use their hearing, such as hearing-impaired and distracted pedestrians, are unable to recognize latent danger with being exposed to major accidents. Therefore, there is a need for an intuitive and effective way to provide the direction of hazardous situations accompanied by noise to those who cannot use hearing. Method: This paper consists of two experiments. In the first experiment, through the two-point threshold experiment of the vibration stimulation, the efficient arrangement of vibration stimulation of the multi-sensing wearable device and the type of providing the vibration stimulation were derived. In the second experiment, when direction information was provided to the user's wrist through the Multi-sensing Vibration Interface, it was investigated whether there is a difference in direction recognition according to the user's posture and the vibration providing method. The experimental apparatus produced a bracelet-type wearable experimental device using Arduino UNO and 3D printer output, and conducted the experiment. As the dependent variables, the error rate as a quantitative index and the preference (7-point scale) as a qualitative index were collected. Results: In the first experiment, the displacement and time interval between vibration stimuli functioned as main factors that influence two points threshold. The results of the second experiment showed a significant difference between the error rate and preference, depending on the user's Posture and type of vibration stimulation, but there were no differences in gender, age or group of subjects. Conclusion: It has been confirmed that users can recognize the direction information of risk factors provided through the multi-sensing wearable interface in compatibility with the actual direction. Application: The results of this study are expected to be the basis for determining the design variables of the multi-sensing vibration interface and developing wearable devices that direct the direction.