Creating Tactile Interaction Surfaces for the Origo Steering Wheel Concept using CWI and EHWs

Haptics, one of the key interaction modalities, is often over-looked as it is considered non-functional in a vibration heavy environment, such as a moving vehicle. However, modern techniques of generating, mediating, and delivering tactile feedback have greatly improved in the last five years. Localizing techniques such as Constructive Wave Interference (CWI) and mediation technique of Embedded Haptic Waveguides (EHWs) can be combined to create reliable and consistent tactile output in even the most challenging environments. In this research authors utilize these techniques to create tactile feedback zones on the steering wheel, which can be used to relay haptic signals to the driver with little to no visual demand.acceptedVersionPeer reviewe

Haptic Mediation through Artificial Intelligence: Magnetorheological Fluid as Vibrotactile Signal Mediator

challenges in creating reliable vibrotactile feedback within noisy environments can be addressed by developing a dynamic actuation platform. This research proposes the use of an AI-driven dynamically adaptive process to generate, mediate and verify tactile signals created for surface-based interaction. Our approach looks at vibrotactile feedback from a holistic point of view and targets creating reliable end-to-end communication across devices and environments.acceptedVersionPeer reviewe

Origo Steering Wheel: Improving Tactile Feedback for Steering Wheel IVIS Interaction using Embedded Haptic Wave Guides and Constructive Wave Interference

Automotive industry is evolving through “Electrification”, “Autonomous Driving Systems”, and “Ride Sharing”, and all three vectors of change are taking place in the same timeframe. One of the key challenges during this transition will be to present critical information collected through additional onboard systems, to the driver and passengers, enhancing multimodal in-vehicle interaction. In this research authors suggest creating embedded tactile-feedback zones on the steering wheel itself, which can be used to relay haptic signals to the driver with little to no visual demand. Using “Haptic Mediation” techniques such as 3D-printed Embedded Haptic Waveguides (EHWs) and Constructive Wave Interference (CWI), the authors were able to provide reliable tactile feedback in normal driving environments. Signal analysis shows that EHWs and CWI can reduce haptic signal distortion and attenuation in noisy environments and during user testing, this technique yielded better driving performance and required lower cognitive load while completing common IVIS tasks.acceptedVersionPeer reviewe

Localized tactile feedback on a transparent surface through time-reversal wave focusing

International audienceThis article addresses the problem of producing independent tactile stimuli to multiple fingers exploring a transparent solid surface without the need to track their positions. To this end, wave time-reversal was applied to re-focus displacement impulses in time and in space at one or several locations in a thin glass plate. This result was achieved using ultrasonic bending waves produced by a set of lamellar piezoelectric actuators bonded at the periphery of the plate. Starting from first principles, the relations linking implementation parameters to the performance of the display are developed. The mechanical design of the display, signal processing, and driving electronics are described. A set of engineering tradeoffs are made explicit and used for the design of a mock up device comprising a glass plate 148 × 210 × 0.5 mm3. Tests indicate that a peak amplitude of 7 μm confined to a 20 mm2 region could be obtained for an average power consumption of 45 mW. Simultaneous focusing at several locations was successfully achieved. We showed that a lumped-mass model for the fingertip can effectively describe the effect of an actual fingertip load at the focus point. Lastly, we elucidated a likely stimulation mechanism that involves the transient decoupling of the finger skin from the plate surface. This phenomenon explains the observed tactile effect

Haptics: Science, Technology, Applications

This open access book constitutes the proceedings of the 12th International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, EuroHaptics 2020, held in Leiden, The Netherlands, in September 2020. The 60 papers presented in this volume were carefully reviewed and selected from 111 submissions. The were organized in topical sections on haptic science, haptic technology, and haptic applications. This year's focus is on accessibility