University of Electro-Communications

About: University of Electro-Communications is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Laser & Robot. The organization has 8041 authors who have published 16950 publications receiving 235832 citations. The organization is also known as: UEC & Denki-Tsūshin Daigaku.

Analytical approximate solutions of the time-domain diffusion equation in layered slabs.

Abstract: Time-domain analytical solutions of the diffusion equation for photon migration through highly scattering two- and three-layered slabs have been obtained. The effect of the refractive-index mismatch with the external medium is taken into account, and approximate boundary conditions at the interface between the diffusive layers have been considered. A Monte Carlo code for photon migration through a layered slab has also been developed. Comparisons with the results of Monte Carlo simulations showed that the analytical solutions correctly describe the mean path length followed by photons inside each diffusive layer and the shape of the temporal profile of received photons, while discrepancies are observed for the continuous-wave reflectance or transmittance.

Time Follower's Vision: a teleoperation interface with past images

Abstract: Time-Followers's Vision is a mixed-reality-based visual presentation system that captures a robotic vehicle's size, position, and environment, allowing even inexperienced operators to easily control it. The technique produces a virtual image using mixed reality technology and presents the vehicle's surrounding environment and status to the operator. Therefore, even for inexperienced operators, the vehicle's position and orientation and the surrounding situation can be readily understood. The authors implement a prototype system and evaluate its feasibility. This article is available with a short video documentary on CD-ROM.

Development of an unit type robot "KOHGA2" with stuck avoidance ability

Abstract: To search victims in the narrow space at the disaster site, we have developed the snake-like rescue robot called "KOHGA". The robot is constructed by connecting multiple crawler vehicles serially by active joints. KOHGA has a problem that obstacles are caught to the joints and then the robot is stuck. To solve this problem, we developed an unit assembled robot "KOHGA2". It can be rearranged. The robot can swing crawler-arms and avoid the stuck. In this paper, we report the construction of the hardware and the control system of KOHGA2, the basic mobility performance, and the stuck avoidance strategy.