Ultrasonic wave detecting blind-guide stick, control system and method

Abstract

The invention discloses an ultrasonic detecting blind-guide stick, a control system and a method, and solves the problems that the detection distance of an electronic blind-guide stick in the prior art is relatively close, the scanning is incomplete and the detection precision is not high. The ultrasonic detecting blind-guide stick can detect obstacles without gaps and accurately detect the distance between the obstacles and a human body, and is convenient in operation. The ultrasonic detecting blind-guide stick comprises a stick rod, a handle, a driving device, a connecting shaft and a detecting device, the connecting shaft is connected with the stick rod, the driving device provides power for one end of the connecting shaft, and the detecting device is arranged at the other end of the connecting shaft; the detecting device comprises an ultrasonic transmitter and an ultrasonic receiver, and a conical beam emitted by the ultrasonic transmitter achieves gapless scanning under the driving of the driving device.

Description

technical field [0001] The invention relates to the field of blind guide sticks, in particular to an ultrasonic detection guide stick, a control system and a method. Background technique [0002] There are a large number of visually impaired people in the world who can only obtain information through their senses. Blind people live in a dark world, which brings great difficulties to work, life and social activities. How to walk safely has become the biggest problem in the life of blind people. Therefore, the blind guide stick has become an indispensable tool in the life of the blind. [0003] Most of the existing blind guide sticks are a crutch. The blind person holds the crutch and touches the end of the crutch to the road to sense the position of the obstacle; Therefore, the use of crutches can not bring great convenience to the blind. [0004] At present, electronic blind guide sticks have emerged as the times require. For example, a guide stick equipped with an infra...

AI Technical Summary

Problems solved by technology

For example, a guide stick equipped with an infrared sensor senses road conditions through an infrared sensor, but this guide stick is easily affected by the environment and has a relatively short detection distance; there are also some guide sticks equipped with an ultrasonic sensor, but its emission angle is too large. Prone to incomplete scanning

[0005] To sum up, in the prior art, there is still no effective solution to the problem of how to design a blind-spot scanning guide stick without gaps

Images