Abstract
One of the most dominant factors in developing tactile modules is the ability to generate abundant vibrotactile sensation. This paper presents a new vibrotactile module which can stimulate two mechanoreceptors at the same time without any mechanical vibration motors. To realize that, we first design an electro-tactile beat module (an ETB module) consisting of a lower part, a connection part and an upper part. The two electrodes were designed in an interdigitated pattern and were applied to the upper part. By applying two voltage inputs with slightly different frequencies to two electrodes in the proposed ETB module, respectively, we can create beat-patterned vibration. Furthermore, we can create normal vibration with the proposed ETB module by applying same frequency to the two electrodes. Experiments were conducted to validate the haptic performance of the proposed prototype. The results show that the proposed ETB module can create not only beat-patterned vibration but also normal vibration. The results also show that it can generate strong enough vibration to stimulate mechanoreceptors in wide frequency ranges.
Highlights
Various types of mobile consumer-electronic devices based on a touch screen panel (TSP), for instance a navigation, a smart phone and a tablet personal computer (PC), have been spread out widely.In interacting with mobile consumer-electronic devices, visual information is the most important factor because human eye is one of the most highly developed organs and its actions are well documented.it is important to transfer a large amount of visual information to a user for immersive interaction with consumer electronics.While visual information is the most dominant sensory input for perceiving an object, haptic information coupled with visual information is important factor for intuitive and immersiveAppl
Haptic feeling consists of kinesthetic sensation and tactile sensation
We present a new electro tactile beat (ETB) module, which has wide operating frequency range and create beat vibration without any mechanical vibrotactile actuators
Summary
Various types of mobile consumer-electronic devices based on a touch screen panel (TSP), for instance a navigation, a smart phone and a tablet personal computer (PC), have been spread out widely. Linjama found out that the duration of a control signal for generating vibration should be between 50 and 200 m sec [14] These tactile actuators and tactile rendering methods stimulate human mechanoreceptors in skin to create vibrotactile sensation. We present a new electro tactile beat (ETB) module, which has wide operating frequency range and create beat vibration without any mechanical vibrotactile actuators. The frequency of the electric beat vibration can be changed by adjusting the frequencies of the input voltages It means that the proposed ETB module can simulate a lot of virtual surfaces. The results show that the proposed ETB module can generate the beat vibration without mechanical vibrotactile actuators and can create strong vibrations enough to stimulate user’s fingertip
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