Blind person environment sensing method based on wireless networks and sound positioning

Abstract

The invention discloses a blind person environment sensing method based on wireless networks and sound positioning, which comprises the following steps: 1) wireless labels with the sounding functions are previously arranged at positions requiring for blind guiding respectively in blind guiding fields; 2) blind person users can use handheld devices with the wireless access functions to search and obtain the wireless label lists around the current positions of the blind person users, the handheld devices can output the wireless label lists through sound to the blind person users, and when the blind person users choose wireless labels, the step 3) is performed; otherwise the step 2) is performed continuously; and 3) the wireless labels chosen by the blind person users are controlled to sound to help the blind person users confirm the positions of the wireless labels. The blind person environment sensing method can enable the blind persons to sense surrounding environment information through sound, can help the blind persons to perform sound positioning on fields or room entrances where the blind persons are interested, and brings convenience to going out of the blind person users.

Description

technical field [0001] The invention relates to the field of guidance for the blind, in particular to an environment perception method for the blind based on a wireless network and sound positioning. Background technique [0002] In daily life, blind people need to rely on blind guide equipment to assist them when walking alone. Among them, the most common device is a cane, which can be used to judge whether there are obstacles ahead by tapping the cane in front. In order to allow the blind to live better independently, various electronic blind guide devices have appeared on the market, among which common ones include hand-held or other hand-held devices with a blind-guiding function. Such devices are usually based on various sensing technologies to detect obstacles around the blind person, thereby assisting the blind person to walk. The disadvantage of this type of equipment is that the information that can be obtained is limited. Generally, it can only detect obstacles ar...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of equipment is that the information that can be obtained is limited. Generally, it can only detect obstacles around the blind person and give prompts, but cannot help the blind person perceive the surrounding environment, such as where the user is, what places and rooms are around.

In recent years, a few auxiliary methods of environmental awareness have appeared, which can perceive and give voice feedback to the surrounding environment of blind users. Since such methods can generally perceive objects within a range of more than ten meters to tens of meters around the user, only based on voice feedback , it is still difficult for blind people to determine the specific location of these objects (such as the entrance of a room), and blind users need further assistance and support at this time

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