Coding vibration and voice prompt blind guiding method and apparatus based on multi-frequency modulation

Abstract

The invention discloses a coding vibration and voice prompt blind guiding method and apparatus based on a multi-frequency modulation. The apparatus comprises a voice prompt module, a vibration prompt watch, a humidity sensor module, a temperature sensor module, a clock module, a control module, a wireless transmission module, an ultrasonic transmitting module, an ultrasonic receiving module, a global positioning system (GPS) module and a power supply module. The coding vibration and voice prompt blind guiding apparatus based on the multi-frequency modulation disclosed by the invention adopts multi-frequency ultrasonic simultaneous detection and phased array beam forming technologies as well as multi-mode prompt, and transmits a constant frequency wave, a first frequency-modulated wave and a second frequency-modulated wave to simultaneously detect far-distance, medium-distance and short-distance barriers; and the blind guiding apparatus further changes the detection direction through the phased array beam forming technology, so that the apparatus can automatically scan at various directions, and the apparatus can prompt user barriers from touch and hearing through the vibration prompt watch and the voice. And the blind guiding apparatus can effectively improve accuracy and realtime performance of detection, and is abundant in functions and convenient for operation.

Description

technical field [0001] The present invention relates to the technical field of a blind-guiding method and device, in particular to a blind-guiding method and device based on multi-frequency modulation coded vibration and voice prompts. Background technique [0002] With the acceleration of social modernization, people pay more and more attention to vulnerable groups. 70% of human information is obtained through vision, so blind and low-vision people are extremely helpless in perceiving the world, and they will have many inconveniences in life. According to the statistics of the national authoritative department, China is the country with the largest number of blind people in the world, about 5 million, accounting for 18% of the world's blind population, more than 6 million people with low vision, and 10 million children with squint and amblyopia. At the same time, there are 450,000 new blind people in my country every year. Experts pointed out that if the current trend is a...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the shortcomings of the existing blind guide tools using single-frequency ultrasonic pulses or frequency-modulated pulses, long detection time, limited distance, inability to detect the direction and position of obstacles, and only providing a single ultrasonic detection function. Method and device for guiding the blind with coded vibration and voice prompts

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