Pathfinder for blind people

Abstract

The invention discloses a pathfinder for blind people. The pathfinder comprises a single chip, an ultrasonic wave emitter, an ultrasonic wave receiver, an alarm module and a battery for providing direct-current power for each part, wherein the ultrasonic wave emitter is connected with the single chip and emits ultrasonic wave signals generated by the single chip, the ultrasonic wave receiver is connected with the single chip and is used for amplifying and shaping the received ultrasonic wave signals and sending the amplified and shaped ultrasonic wave signals to the interruption port of the single chip, the single chip processes the ultrasonic wave signals, the single chip is connected with the alarm module and controls the alarm module to work according to a processing result, and when a distance away from a forward barrier is smaller than a set safe distance, the alarm module sends out alarm sound to remind the blind people of paying attention to the forward barrier. The pathfinder is mounted on a pathfinding rod, the detection range of the pathfinder is not affected by the length of the pathfinding rod, and whether a barrier appears within the forward safe distance can be known before the pathfinding rod contacts with the barrier.

Description

technical field [0001] The invention relates to a pathfinder for blind persons installed on a pathfinder pole for blind persons. Background technique [0002] Blind people refer to people who are blind. It is very inconvenient to move in life, especially when walking, it is easy to bump into obstacles such as walls, tables or trees. In order to prevent bumping into obstacles, blind people generally hold The path-finding pole is used for pathfinding to detect whether there is an obstacle ahead. If the path-finding pole touches an obstacle, the blind person will walk in a detour to avoid the obstacle. Traditional pathfinding poles are favored by blind people because of their simple structure and easy manufacture, but this kind of pathfinding poles have the following problems: the pathfinding poles cannot be made too long, and if they are too long, they will easily affect other people's walking, so their detection range (ie The safety distance ahead) is limited; the pathfindin...

AI Technical Summary

Problems solved by technology

Traditional pathfinding poles are favored by blind people because of their simple structure and easy manufacture, but this kind of pathfinding poles have the following problems: the pathfinding poles cannot be made too long, and if they are too long, they will easily affect other people's walking, so their detection range (ie The safety distance ahead) is limited; the pathfinding pole can only transmit the obstacle information to the blind person when it encounters an obstacle. When the pathfinding pole touches an obstacle, if the obstacle is other people in front of the blind person, it is easy Injure others, if the obstacle is a car or other valuables, it is easy to damage the item

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