Intelligent auxiliary device and method for travelling of blind people

An assistive device, a technology for the blind, applied in the direction of equipment to help people walk, physical therapy, etc., can solve the problems of blind people's social barriers, travel safety, single function, etc. The effect of learning cost

Inactive Publication Date: 2018-11-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an intelligent travel assistance device and method for the blind, which solves the technical problems that the current travel assistance device for the blind has a single function and cannot effectively solve the social barriers and travel safety of the blind

Method used

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  • Intelligent auxiliary device and method for travelling of blind people
  • Intelligent auxiliary device and method for travelling of blind people
  • Intelligent auxiliary device and method for travelling of blind people

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Experimental program
Comparison scheme
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specific Embodiment 1

[0089] The working process of the identification module is:

[0090] (1) The visual sensor in the recognition module acquires RGB images and performs preprocessing:

[0091] a. Receive the call instruction from the information processing module, and call the visual sensor to obtain the RGB image;

[0092] b. Image preprocessing (denoising, contrast enhancement, etc.) is performed on the acquired image, and the processed RGB image is output;

[0093] (2) Identify the processed RGB image:

[0094] a. Use the processed RGB image for traffic sign recognition (including blind roads, traffic lights, zebra crossings, etc.), and the recognition method uses an object recognition algorithm based on deep learning;

[0095] b. Use the processed RGB image for face key point detection to detect the face appearing in the image:

[0096] Authenticate the detected face;

[0097] Perform face attribute recognition (gender, age, expression, etc.) on the detected face;

[0098] (3) Output tr...

specific Embodiment 2

[0099] The working process of the voice module is as follows:

[0100] 1. When the user issues a voice command:

[0101] (1) Utilize the voice receiver (microphone) to receive the voice signal from the user (including starting point and end point information);

[0102] (2) Preprocessing the received voice signal;

[0103] (3) Spectrum analysis is carried out to the speech signal after processing, and feature is extracted frame by frame;

[0104] (4) Perform similarity matching between the extracted feature and the speech feature in the module library to obtain the corresponding text;

[0105] (5) Perform semantic analysis on the text obtained in the previous step, and extract key information (starting point, end point).

[0106] 2. When receiving the text (face recognition result, obstacle information, navigation information) from the information processing module:

[0107] (1) Perform semantic analysis on the text content to generate text that conforms to language habits;...

specific Embodiment 3

[0110] The obstacle detection module includes sensors arranged at the user's waist, and the sensors include at least two groups, each group of sensors includes a ground obstacle detection sensor, a suspended obstacle detection sensor and a ground obstacle detection sensor in front of the user.

[0111] In this embodiment, the obstacle detection module is provided with 3 groups of sensors, which are respectively arranged on the left side, the middle side, and the right side of the user's waist. Since the average torso width of the user is W, the distance between each group of sensors is

[0112] Each group of sensors includes low ground obstacle detection sensor, suspended obstacle detection sensor and high ground obstacle detection sensor; the sensor model adopts HC-SR04 ultrasonic sensor, the sensing angle is not more than 15 degrees, and the detection distance is 2cm-450cm , the precision is 0.3cm, the voltage is DC5V;

[0113] Since the ratio of the upper and lower body o...

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Abstract

The invention discloses an intelligent auxiliary device and method for travelling of blind people. The intelligent auxiliary device comprises a voice module, a recognition module, an obstacle detection module, a navigation module and a message processing module. Compared with a conventional blind people guidance system, the intelligent auxiliary device disclosed by the invention provides necessaryguidance information and obstacle avoiding information, wherein the obstacle detection module not only can detect smaller obstacles on the ground and obstacles hanging in the air, but also can detectlarger obstacles on the ground, besides, can forecast the width information of the obstacles, and can provide precise data for the blind people to avoid the obstacles; and besides, recognition for traffic signs is increased, so that the situation that the blind people travel safely can also be guaranteed.

Description

technical field [0001] The invention relates to the field of appliances for the blind, in particular to an intelligent travel assistance device and method for the blind. Background technique [0002] According to CCTV data in October 2016, there were 17.31 million visually impaired persons with disabilities in my country in 2016, accounting for about 50% of the world, and it continues to grow at a rate of about 400,000 per year. It shows that there are a large number of visually impaired people in our country, and all sectors of society should give enough care and care. Guide dogs often cost hundreds of thousands of yuan, which is difficult for ordinary blind families to bear. Therefore, at present, the visually impaired in my country mainly rely on guide sticks to travel. Although there are many guide systems for the blind based on infrared rays and radars, these sensors are expensive, and the integrated equipment is bulky and not portable, and the operation is complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61H3/06
CPCA61H3/061
Inventor 张汝民杨一丰刘志励陈建文
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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