Abstract: An interactive information system includes: a first frame, a first interactive module arranged in the first frame, a second frame, a control module arranged in the second frame and configured to generate a graphic user interface (GUI) and to perform a function of the interactive information system based on the first user input; and a first internal cable connecting the first interactive module bridge board and the control module and configured to transmit the plurality of inter-frame signals between the first frame and the second frame. The first interactive module includes: a first display module for display of the GUI; a first touch input module configured to receive a first user input to the GUI; and a first interactive module bridge board configured to transmit a plurality of inter-frame signals comprising electrical signals of the first display module and the first touch input module.

Abstract: A fiber-optic sensor for liquid-immersion detection includes an optical fiber and an interface material layer. The optical fiber has an angled physical contact (APC) surface. The interface material layer contacts with the APC surface. The interface material layer has a rough surface when in a dry state to produce a diffusion reflection. The interface material layer has a smooth surface to produce a specular reflection when the interface material layer absorbs a liquid in a wet state.

Abstract: A fiber-optic sensor for liquid-immersion detection includes an optical fiber and an interface material layer. The optical fiber has an angled physical contact (APC) surface. The interface material layer contacts with the APC surface. The interface material layer has a rough surface when in a dry state to produce a diffusion reflection. The interface material layer has a smooth surface to produce a specular reflection when the interface material layer absorbs a liquid in a wet state.