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Wireless handheld portable navigation system and method for visually impaired pedestrians
Wireless handheld portable navigation system and method for visually impaired pedestrians
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机译:用于视障行人的无线手持便携式导航系统和方法
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摘要
This invention relates to a system for orienting and guiding visually impaired pedestrians. The system combines a Global Positioning System (GPS) receiver to a dead reckoning unit that compensates for GPS imprecision and loss of signal. The system is highly portable: it is based on a handheld portable computing platform that communicates wirelessly with a self-powered strap containing the GPS receiver and the dead reckoning unit. The system also uses wireless protocols to receive additional orientation information from a remote location server or operator accessible through the internet. Additionally, a positioning algorithm for mapping the user near a street intersection is provided.
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