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Blind person guiding system based on radio self-organizing network

A wireless ad hoc network and wireless ad hoc technology, applied in the directions of location-based services, wireless communication, network topology, etc. effect of ability

Inactive Publication Date: 2006-06-28
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these inventions is not very convenient, limited by environmental factors, it is necessary to develop a more convenient and practical guide system for the blind

Method used

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  • Blind person guiding system based on radio self-organizing network
  • Blind person guiding system based on radio self-organizing network
  • Blind person guiding system based on radio self-organizing network

Examples

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Embodiment Construction

[0023] A preferred implementation example of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0024] Such as figure 1 As shown, the nodes placed in the apartment building form a local area network wirelessly. The communication range of each node is only about 10 meters. Therefore, to communicate with nodes outside the communication range, the data must be forwarded through other intermediate nodes (its role is equivalent to a router).

[0025] Since the system is based on wireless ad hoc network, it has self-repair capability. When a node in the network fails or is damaged, the node can automatically find a new routing path and re-establish the connection.

[0026] Each node will monitor the status of the channel, and when it hears a request from a terminal, it will respond in time. A terminal can establish connections with multiple nodes at the same time, and similarly, a node can also establish connections with multiple ...

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PUM

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Abstract

This invention relates to a blind guiding system based on a wireless self-organized net including multiple wireless communication nodes to compose a WLAN by a wireless self-organized network route protocol, in which, said nodes are set at the basid service installations of blind activity regions, persons accepting help hold terminals to join in the network, the nodes and the terminals set up wireless communicatioin limks by their own T-R units to exchange and transmit data and information.

Description

Technical field: [0001] The invention relates to a tool for helping the blind to walk and the fields of information transmission and wireless communication, in particular to a guide system for the blind based on a wireless ad hoc network. Background technique: [0002] The Guide System for the Blind is a system that helps the blind walk around. Some guide systems for the blind have been proposed, such as the Chinese patent application "Remote Control Digital Code Audio Blind-Aiding Direction Recognition Device" published on October 22, 2003 with the announcement number 1450525, the recipient operates the group selection on the radio remote control transmitter. And rhythm switch, control the signal receivers distributed in the living environment of the recipients and near the commonly used items to make sounds individually or in any combination, so as to achieve the purpose of helping the blind to identify, locate and find objects; another example in January 2004 The announc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04W4/02H04W84/18
Inventor 施惠昌余馨豪
Owner SHANGHAI UNIV