A Wearable Haptic Display to Present the Gravity Sensation - Preliminary Observations and Device Design.
ABSTRACT We propose a wearable ungrounded haptic display that presents a realistic gravity sensation of a virtual object. We focused on the shearing stress on the fingerpads due to the weight of the object, and found that the deformation of the fingerpads can generate a reliable gravity sensation even when proprioceptive sensation on the wrist or arm is absent. This implies that an ungrounded gravity display can be realized by reproducing fingerpad deformation. Based on our observations, we conducted evaluation tests for the device design. We first implemented the prototype device, which has a simple structure comprising dual motors, and then evaluated the recognition ability of the gravity sensation presented on the operator's finger by this method.
- [Show abstract] [Hide abstract]
ABSTRACT: In recent times, there have been a number of computer user interface devices that have some haptic feedback functions, such as the DUALSHOCK controller [Sony Computer Entertainment, Inc. 1997] or the Wii Remote [Nintendo Co., Ltd. 2006]. However, their haptic feedback is limited to only the vibration function since there is no other method to provide haptic feedback that can be implemented with a small and inexpensive device. On the other hand, there is an increasing demand for realistic haptic feedback; thus, a simple and inexpensive method for a highly realistic haptic display is required. To meet this requirement, we propose a wearable haptic display to present the mass of a virtual object as shown in Figure 1. We focused on the mass of a virtual object, which contributes to the weight and the inertia mass in haptic interaction. If the virtual mass is presented by a haptic device, the user can perceive a more realistic sensation of the virtual object by grasping than the vibration feedback.01/2007;
Conference Paper: Emerging system for affectively charged interpersonal communication[Show abstract] [Hide abstract]
ABSTRACT: The paper focuses on a novel system iFeel_IM! that integrates 3D virtual world Second Life, intelligent component for automatic emotion recognition from text messages, and innovative affective haptic interfaces providing additional nonverbal communication channels through simulation of emotional feedback and social touch (physical co-presence). The motivation behind our work is to enrich social interaction and emotional involvement of online interpersonal communication. iFeel_IM! users can not only exchange messages but also emotionally and physically feel the presence of the communication partner (e.g., family member, friend, or beloved person).ICCAS-SICE, 2009; 09/2009
- [Show abstract] [Hide abstract]
ABSTRACT: Transmission of the distribution of force vectors on a fingertip improves the stability of a given operation in a tele-operation system. As such, we seek the representation of the distribution of force vectors via an electrotactile display. The electrotactile display directly activates nerve fibers connected to mechanoreceptors, thereby representing a tactile sensation. The system has a simple structure, is easily controlled and, it has seen a number of different applications. However, the majority of the conventional electrotactile displays only present a symbolic sensation of contact. In this paper, we propose the design of electrotactile stimulation for the distribution of force vectors, on the basis of the concept of "tactile primary colors". Considering that a selective stimulation of mechanoreceptors enables the representation of the distribution of force vectors, we evaluate the proposed design in terms of the distribution, magnitude, and direction of a force vector. The results demonstrate that the proposed design is a viable approach to representing the distribution of force vectors.Haptics Symposium, 2010 IEEE; 04/2010