Outdoor blind guiding spatial data organization method based on channels and function units

Abstract

The invention discloses an outdoor blind guiding spatial data organization method based on channels and function units. Urban space units are divided into route units and universal units, and specifically comprise complex units and simple units, and the complex units comprise complex units and / or simple units and / or route units; besides obstacles and attachments, the functions of meeting the demands of the blind are given to other universal units, and the other universal units are connected with the road units through entrances; semantic and expansion frames are used for describing the urban space units, and the public can provide dynamic blind guiding information in a VGI mode; the road units are associated with function unit entrances, and topological information of the urban space units is stored. The method is more suitable for the demands of the blind for spatial information when the blind go outdoors, global path planning and partial routing analysis are facilitated when the blind go outdoors, the risk factors of various obstacles on the roads for walking of the blind are given, and important bases are provided for low-risk routing planning for the blind going out.

Description

technical field [0001] The invention belongs to the field of outdoor blind guidance, in particular to a method for organizing outdoor blind guidance space data based on channels and functional units. Background technique [0002] Using modern information technology to make up for the lack of spatial perception of the blind when walking is an important means to improve the mobility of the blind. At this stage, in the field of electronic information and computer information, there have been many achievements, such as roadblock detection tools developed by using RFID, infrared, Bluetooth, WiFi, ultrasonic and other technologies, and voice navigation for blind people realized by using voice recognition and interactive technology. At the same time, the research on obstacle recognition and local path guidance based on computer vision and image interpretation technology has gradually been promoted, and some guide robots and related equipment developed by integrating the above techn...

AI Technical Summary

Problems solved by technology

Secondly, blind guide aids for the purpose of roadblock detection focus on prompting blind people how to avoid obstacles, but due to insufficient attention to the overall information of the walking path, the number of obstacles, and risk information, etc. Especially in the planning of global paths and medium and long-distance paths, its application capabilities are still insufficient

Finally, relying on electronic information technology to guide the blind may need to integrate a variety of electronic components and sensors, resulting in problems such as bulky tools, complex structures, and high costs, which hinder the practical promotion of related tools to varying degrees

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