Blind person travel obstacle avoidance system

Abstract

The invention provides a blind person travel obstacle avoidance system, which comprises a direction navigation bracelet, a distance navigation bracelet and an environment acquisition device, and is characterized in that the environment acquisition device comprises an image acquisition module and an infrared obstacle detection module which are respectively used for acquiring environment images and detecting obstacle distances through infrared rays; a data processing module and a signal transmitting module are integrated on the environment collecting device, the data processing module is used for receiving collected image information, analyzing and judging obstacles in the environment, recording the distance of the obstacles, and finally converting the analyzed obstacle information into electric signals to be transmitted to the direction navigation bracelet and the distance navigation bracelet; after receiving the signal, the direction navigation bracelet controls the first vibration module in a certain indication direction to vibrate so as to prompt an obstacle avoidance direction, and after receiving the signal, the distance navigation bracelet controls the second vibration module to vibrate, and the faster the vibration frequency is, the closer the distance from the obstacle is. The system prompts a user to effectively avoid obstacles through vibration signals of different bracelets, and is simple, convenient and reliable.

Description

technical field [0001] The invention relates to the technical field of wearing assistive devices, in particular to a travel obstacle avoidance system for blind people. Background technique [0002] According to statistics from the World Health Organization in 2010, there are 8.248 million blind people in China, and the number of such visually impaired people in China ranks first in the world. In 2016, the number of visually impaired people has rapidly increased to 17.31 million, that is, about one out of every eighty people is blind. [0003] However, the current external travel environment is not friendly to blind people. There are problems such as placing vehicles on blind roads, decapitated blind roads, and snake-shaped blind roads, which are not conducive to normal travel for blind people. And most of the existing bracelets for the blind use sound waves or infrared to identify obstacles. For example, in the invention patent application with the publication number CN113...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned wristband obstacle avoidance navigation system has the problem that when the wristband is rotated, the recognition sensor cannot recognize the front or the recognition error occurs. Can’t hear clearly in a noisy environment, so that when there are obstacles on the road, the user cannot get prompts to avoid obstacles through the wristband in time

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