Non-Contact "VibroTracker" System Measures Vibration of Fast-Moving Object in Real Time
In addition to video and audio, the ability to relive the sensations experienced by others - in, for instance, sporting events - could offer added entertainment value. However, existing systems have some problems in measuring vibrations. A contact-type vibrometer deforms the original vibrations and can be a burden to wear or carry. Even with a non-contact sensor like a microphone, it is difficult to measure slight vibrations of a fast-moving target against the surrounding noise. Researchers at the University of Tokyo's Ishikawa Watanabe Laboratory have developed the VibroTracker system, which uses a laser Doppler vibrometer and a high-speed optical gaze controller. The system can measure the vibration of a fast-moving target with high accuracy, in real time, without any influence from surrounding noise or physical contact, enabling users to relive the vibrotactile sensations experienced by others.
Transcript
00:00:01 at the iska wanabi laboratory of the University of Tokyo we developed a non-con fiot tactile measurement system for unrestricted objects this system can measure faint vibrations from a distance even when a Target is moving it then shares the haptics with another person by reproducing the vibration we combined a laser dobler vibrometer with high-speed Optical
00:00:24 access control system called the sakad mirror the laser doler vibrometer measures the vibration optically imposing no restriction on the target the sakade mirror keeps the ray Direction at the center of the target through one KZ Target recognition and rotating two galvano mirrors this high-speed Target tracking measurement allows the target to move
00:00:47 freely inaudible slight and high frequency vibrations can also be measured accurately in this experiment the user can experience the vibrotactile sensation the player feels from the pingpong bat vibro tial Sensations are reproduced by a vibrator attached to an object similar to the measured one the user feels as if interacting with an invisible object