HeadBlaster: A Wearable Approach to Simulating Motion Perception using Head-mounted Air Propulsion Jets

摘要

We present HeadBlaster, a novel wearable technology that creates motionperception by applying ungrounded force to the head to stimulate the vestibularand proprioception sensory systems. Compared to motion platforms thattilt the body, HeadBlaster more closely approximates how lateral inertialand centrifugal forces are felt during real motion to provide more persistentmotion perception. In addition, because HeadBlaster only actuates the headrather than the entire body, it eliminates the mechanical motion platformsthat users must be constrained to, which improves user mobility and enablesroom-scale VR experiences. We designed a wearable HeadBlaster systemwith 6 air nozzles integrated into a VR headset, using compressed air jetsto provide persistent, lateral propulsion forces. By controlling multiple airjets, it is able to create the perception of lateral acceleration in 360 degrees.We conducted a series of perception and human-factor studies to quantifythe head movement, the persistence of perceived acceleration, and the minimallevel of detectable forces. We then explored the user experience ofHeadBlaster through two VR applications: a custom surfing game, and acommercial driving simulator together with a commercial motion platform.Study results showed that HeadBlaster provided significantly longer perceivedduration of acceleration than motion platforms. It also significantlyimproved realism and immersion, and was preferred by users compared to using VR alone. In addition, it can be used in conjunction with motionplatforms to further augment the user experience.