Abstract
Applying tactile sensors to various types of human-machine interaction requires not only softness in terms of comfort and safety, but also ease of customization and low -cost implementation. The purpose of this study is to analyze the change of interfered white light intensity in a soft material sponge with respect to the external force. We fixed one LED and four optical sensors under a sponge as a soft medium. The light was transmitted from the white LED to the sponge medium and the intensity of the LED light was measured by selective reflection through a soft medium with optical sensors. Also, we measured four light intensity changes with respect to the external force in three axial directions. As a result, we could analyze the light intensity change according to the degree of external force.
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