Haptic Interface for Proximity Object Recognition Considering Hand Structure

The drivers who drive in spaces such as SharedSpace must pay attention in all directions given that there are chances of accidents in any direction. In this paper, we introduce a haptic interface that alerts about obstacles surrounding the vehicle by haptic pressure to the dorsal side of the hand. Because the hand shape is not symmetrical at the tip and wrist sides, both should be considered when presenting force perception around the hand. We proposed two approaches for pressure stimulation and two approaches for holding the joystick lever as a means of increasing the amount of information that could be presented to the front side. We show that static pressure could achieve a higher-resolution stimulation than periodic pressure. In addition, by detaching the finger and lever, the deep sensation can be used to sense pressure. Regarding the rear side, we proposed a method for mounting manipulators to present obstacles in the rearward region. We conducted an experiment and proved that shearing force from -180 degrees can present obstacles in the rearward region.