Ultradźwiękowa technika haptyczna – działanie, zastosowania, zagrożenia
Ultrasonic haptic technique – operation, applications, hazards

Summary/Abstract: The ultrasonic haptic technique is a new, commercially available technique that allows the creation of invisible objects in the air above the haptic device, which can be sensed by the sense of touch. In this technique, a concentrated and appropriately modulated ultrasound beam causes vibrations of the human skin, thus stimulating the mechanoreceptors located in it and causing a feeling of touch. The technique has many potential applications, ranging from enriching virtual reality through control interfaces to aids for people with visual disabilities. On the other hand, this technique, due to the use of ultrasound with high sound pressure levels, may become a source of potential hazards to its user. The article discusses the principle of operation of the ultrasonic haptic technique, its possible applications and currently commercially available ultrasonic haptic devices. The paper also presents the results of a preliminary assessment of ultrasonic noise hazard caused by the ultrasonic haptic technique based on the ultrasonic noise measurements carried out for one of the described devices.

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