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This paper presents an integrated wireless system that helps a visually impaired person navigate within an indoor environment. The guidance process to help the person navigate uses a ZigBee wireless mesh network to localize the user and a compass to determine his/her orientation. The system uses a server to calculate an optimal path from the user's present location to the target location or item to...
This paper presents the architecture as well as the implementation of a system that helps blind person navigate independently within an enclosed environment such as the home. The system uses a wireless mesh network to provide the first level localization. It also incorporates additional components to provide more refined location and orientation information. Optimal path planning is done by a server...
Applications with street navigation have been recently introduced on mobile phone devices. A major part of existing systems use integrated GPS as input for indicating the location. However, these systems often fail or make abrupt shifts in urban environment due to occlusion of satellites. Furthermore, they only give the position of a person and not the object of his attention, which is just as important...
An indoor navigation system based on passive RFID is described. It allows the user to move autonomously resorting to a grid of RFID tags for localization and simple procedures to determine the position and to plan the route. Ad-hoc designed RFID tags permit to achieve reliable and accurate position estimation while a proximity algorithm allows real-time localization. Many details of the localization...
The design and implementation of a robot team consisting of three homogeneous mobile robots and an external server is presented. The main goal of the robot team is the updating of a map or representation of an indoor environment. A scheme for collective exploration was defined. This scheme enables robots to navigate and self-locate within an indoor environment, communicate to each other, create local...
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