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    Development and characterization of a wearable ring providing haptic feedback
    (İstanbul Bilgi Üniversitesi, 2022) Pehn Mayo, Franck Paulin Ludovig; Ayyıldız, Mehmet
    ABSTRACT: Touchscreens can be found on a variety of devices, including ATMs, phones, laptops, kiosks, automobiles, and many others. In those applications, the user navigates to the interface with his finger to interact with the tactile information using instincts. Roughly, every haptic device uses vibration to interact with the user. The user's haptic experience is delicate due to the complexity of the tactile information. Associating kinesthetic experience is a key subject in enhancing the human haptic experience. In this investigation, we developed a novel characterized haptic ring equipped with up to four LRA motors in order to improve the human haptic perception. The proposed device uses subcutaneous clues to replicate the forces and moments applied to the proximal interphalangeal joint of the index finger. Thresholding experiments are conducted using a total of nine subjects to evaluate the effects of the vibration amplitude, line thickness, and orientation on human perception. The results showed that as the line's thickness and amplitude increased, so did the participants' ability to identify the shapes. The human participants can detect a minimum thickness of 2 mm at the lowest possible vibration level with a single motor. Additionally, the second vibration amplitude and vertical orientation result in the best recognition rates and times besides the control.