Blind person obstacle-avoiding navigation method capable of precisely feeding back distance and direction of obstacle

Abstract

The invention relates to a blind person obstacle-avoiding navigation method capable of precisely feeding back distance and direction of an obstacle. According to the method, a signal collecting device, a motor vibration device and a voice prompt device are arranged on a crutch and can rotate along with the crutch, data processing circuits are arranged between the signal collecting device and the motor vibration device and between the signal collecting device and the voice prompt device and are used for receiving collected signals, the collected signals are made to be control signals through set steps of the data processing circuits, and then the control signals are correspondingly transmitted to the motor vibration device and the voice prompt device. The method has the advantages that a single chip microcomputer work unit is used for controlling two ultrasonic sensors to collect the distance between an obstacle and the ultrasonic sensors in real time, the voice prompt device is controlled to feed back the specific distance between the obstacle and a blind person and the specific direction of the obstacle, the motor vibration device is used for feeding back the rough distance between the obstacle and the blind person and the rough direction of the obstacle, and therefore auxiliary navigation is provided for the blind person in the walking process.

Description

technical field [0001] The invention relates to the technical field of obstacle avoidance navigation for blind people, in particular to an obstacle avoidance navigation method for blind people that accurately feeds back the distance and direction of obstacles. Background technique [0002] As a special group in society, blind people need more care and care from society so that they can live better independently. According to the data provided by the "National Plan for Blindness Prevention and Treatment (2006-2010)", there are about 5 million blind people in my country and about 7.1 million people with low vision. In the face of such a large group of blind people and complex and changeable traffic conditions, various navigation methods have emerged as the times require. At present, the main navigation method applied to the crutches of the blind is to send ultrasonic signals through the ultrasonic detection module on the crutches. When the ultrasonic detection module receives...

AI Technical Summary

Problems solved by technology

It can be seen that the current navigation method can only detect the obstacle directly in front of the blind person, but cannot detect the obstacle in front of the left or right of the blind person; in addition, the current detection method can only roughly detect the distance of the obstacle, but cannot detect The direction of the obstacle, and the simple feedback through the sound signal is easily affected by the noise of the surrounding environment

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