Airborne Ultrasound Tactile Display: Supplement
نویسندگان
چکیده
where w [W/m] and c [m/s] are the sound intensity and the sound velocity, respectively. N is the number of the transducers used to form the array. S [m] is the radiation area of a single transducer and Stot = NS. A common airborne ultrasound transducer, which is used for the measurement of the distance or the detection of objects, can emit about 0.041 W of ultrasound in normal use. Hence, if the number of the transducer is 100 and the sound speed is 340 m/s, the total force produced with the array is estimated as about 2.4 [gf]. This estimated force is sufficient for producing vibratory sensation.
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