Haptic communication system using cutaneous actuators for simulation of continuous human touch
摘要
說(shuō)明書(shū)
The amplitudes above are expressed in terms of dB SL, which refers to the number of dB that the haptic sensations are above the sensation threshold (i.e., the minimum dB required for perception of the haptic sensations). The 15 dB SL amplitude-at-detection-threshold (aDT) may be determined as: aDT×(20 log 15), or aDT×5.6, where the aDT is the lowest threshold a user can detect. Similarly, the 20 dB SL aDT may be determined as: aDT×(20 log 20), or aDT×31.6.
The haptic sensations may be transmitted to several participants of an experiment, where the first haptic sensations and the second haptic sensations correspond to the one or more frequencies in a frequency set. Each participant may wearing an array of the cutaneous actuators for the experiment. A rating (e.g., pleasantness) of the continuous tactile motion may be received from each participant of the experiment for each frequency set. In one experiment, each of the ten frequency sets described above were applied to participants at five different speeds of the haptic sensations, i.e., 5.7 cm/s, 7.1 cm/s, 9.2 cm/s, 13.2 cm/s, and 23.4 cm/s. The speed refers to the distance along the body 1500 that the haptic vibration strokes cover by unit of time. Therefore, for a speed of 5.7 cm/s, the stroke moves 5.7 cm along the body of the participant in one sec. The experiment included 50 patterns, i.e., 5 speeds×10 frequency sets. The experiment was performed on 21 participants (11 males, average age: 37 years old) who rated the 50 patterns on a pleasantness scale of between ?7 (less pleasant) and +7 (more pleasant).
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