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When an autonomous mobile robot exploring in an unstructured environment, it may often enter a wall-corner, but be stuck there. We present a wall-corner collision detection and avoidance algorithm using depth images. We first determine if a mobile robot is trapped in a wall-corner using historic alternate turnings. Then we propose a geometric approach to let the robot escape a corner. We demonstrate...
We present a low-cost social robot system composed of a mobile base (a robotic cleaner, $150), an Intel RealSense RGB-D camera ($100), a touch screen powerful laptop ($800), the ROS(Robot Operating System) ($0) and the Intel RealSense SDK ($0). This social robot has the capability of autonomously navigating in an unstructured and dynamic environment, avoiding collisions with stationary or dynamic...
An innovative surface plasmon resonance (SPR) sensor is constructed to achieve ultraviolet (UV) imaging. The SPR sensor is fabricated using a gold-coated prism, which is then overlaid with an azo-polymer film as a UV sensing layer. The refractive index of the azo-polymer decreases during UV light irradiation. The changes of the refractive index influence the intensity of the light reflected from the...
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