CN113133906A

CN113133906A - Ultrasonic blind guiding system

Info

Publication number: CN113133906A
Application number: CN202110430519.3A
Authority: CN
Inventors: 杨苾妍; 陈佳平; 王雪瑞; 张一凡; 刘生鹏
Original assignee: Xidian University
Current assignee: Xidian University
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-07-20

Abstract

An ultrasonic blind guiding system structurally comprises: the rod part of the crutch, one end of which is the head part of the crutch and the other end of which is the bottom part of the crutch along the axial direction; the crutch head comprises: the crutch shell is a functional module wrapped by the crutch shell; the functional module includes: the main control STM32 comprises a vibration module, a voice module, a power supply module and a switch which are directly connected with the main control STM32 through a flat cable; the walking stick pole portion includes: the rod part main body is a flat cable tube embedded in the rod part; the walking stick bottom includes: the walking stick shell, the ultrasonic transmitting and receiving module and the ultrasonic fixing module which are embedded on the walking stick shell, and the gyroscope and the magnetometer which are fixed at the bottom of the walking stick shell. Wherein, if there is the barrier near the walking stick, the loudspeaker of walking stick grab handle department can report barrier position, and the module work of shaking simultaneously shakes in order to indicate the blind person.

Description

Ultrasonic blind guiding system

Technical Field

The invention relates to the technical field of blind guiding, in particular to an ultrasonic blind guiding system.

Background

The blind people in China are numerous in population, and as a molecule of the society, the blind people cannot enjoy normal life, more hardiness is needed than ordinary people, a lot of difficulties are met, and the problem of the blind people going out becomes a non-negligible social problem.

At present, a plurality of auxiliary devices are provided for the blind in the society, but the devices have various advantages and disadvantages and are not suitable for popularization and use. Most common blind person guiding equipment in China needs the blind person to judge obstacles by knocking the ground, and the equipment is difficult to find the obstacles at the positions which are suspended in the air or difficult to touch by a walking stick. Foreign technologies are relatively mature, but are difficult to popularize due to price problems. There are also some auxiliary ways of guiding the blind, such as guiding dogs or other electronic devices. The guide dogs are few and difficult to train, and the cost is relatively high. Electronic equipment is expensive, most of the electronic equipment needs to be connected with the Internet, and the electronic equipment is not practical. It is therefore important to manufacture a device that is relatively inexpensive and yet capable of effectively performing blind guiding functions.

With the development of science and technology, the single chip microcomputer technology is relatively perfect from the past to the present, and the blind guiding system can realize the required functions by means of the single chip microcomputer technology. Meanwhile, the sensor technology is continuously developed, has wide application in various industries, becomes a technology closely related to our lives, and is a good choice for completing intelligent blind guiding equipment in the aspects of price technology and the like by utilizing ultrasonic ranging.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an ultrasonic blind guiding system to solve the problem that the blind is inconvenient to go out.

An ultrasonic blind guidance system, comprising:

the rod part of the crutch, one end of which is the head part of the crutch and the other end of which is the bottom part of the crutch along the axial direction;

the crutch head comprises: the crutch shell is a functional module wrapped by the crutch shell; the functional module includes: the main control STM32 comprises a vibration module, a voice module, a power supply module and a switch which are directly connected with the main control STM32 through a flat cable; the voice module includes: the voice processing chip is directly connected with the main control STM32 through a flat cable, and is connected with the voice processing chip through the flat cable and is fixed on the horn of the crutch shell; the power module includes: the battery connected with the main control STM32 through a flat cable is connected with the main control STM32 chip through the flat cable and is fixed at a charging port on the crutch shell;

the walking stick pole portion includes: the rod part main body is a flat cable tube embedded in the rod part; one end of the wire arranging pipe is connected with the head of the walking stick and the other end is connected with the bottom of the walking stick along the axial direction;

the walking stick bottom includes: the walking stick comprises a walking stick shell, an ultrasonic fixing module embedded on the walking stick shell, an ultrasonic transmitting and receiving module, a gyroscope and a magnetometer which are fixed at the bottom of the walking stick shell; the ultrasonic transmitting and receiving module, the gyroscope and the magnetometer are connected with the rod part of the crutch through flat cables; the ultrasonic transmitting and receiving module is fixed on the outer side of the crutch shell through the ultrasonic fixing module.

Preferably, the head part of the crutch is in threaded connection with the rod part of the crutch, and the rod part of the crutch is in sleeve connection with the bottom of the crutch.

Preferably, the crutch shaft is wrapped with a rubber sleeve. The design that the rod part of the crutch is wrapped by the rubber sleeve is adopted, so that the friction force during holding can be increased.

Preferably, the battery is a rechargeable battery.

Preferably, the crutch shell is provided with a grip mark at the hand-holding part. The invention adopts the design of holding marks, thereby being convenient for the blind to hold.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the head of the present invention;

FIG. 3 is a schematic view of the internal structure of the bottom and the middle of the present invention

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An ultrasonic blind guidance system, comprising:

a crutch rod part 14, one end of which is a crutch head 13 and the other end is a crutch bottom 16 along the axial direction;

the crutch head 13 includes: a crutch shell 6, a functional module wrapped by the crutch shell 6; the functional module includes: the main control STM32 chip 5 comprises a vibration module 2, a voice module 3, a power supply module and a switch 1 which are directly connected with the main control STM32 chip 5 through a flat cable; the voice module includes: the voice processing chip 3 is directly connected with the main control STM32 chip 5 through a flat cable, and is connected with the voice processing chip 3 through the flat cable and is fixed on the horn on the crutch shell 6; the power module includes: the battery 11 connected with the main control STM325 through a flat cable is connected with the main control STM32 chip 5 through a flat cable and is fixed at a charging port on the crutch shell 6;

the walking stick pole portion includes: the rod part main body is a flat cable tube embedded in the rod part; one end of the wire arranging pipe is connected with the head part 13 of the crutch, and the other end is connected with the bottom part 16 of the crutch along the axial direction;

the crutch bottom 16 includes: the walking stick comprises a walking stick shell, an ultrasonic transmitting and receiving module 7 and an ultrasonic fixing module 12 which are embedded on the walking stick shell, and a gyroscope 8 and a magnetometer 9 which are fixed at the bottom of the walking stick shell; the ultrasonic transmitting and receiving module 7, the gyroscope 8 and the magnetometer 9 are connected with the crutch rod part 14 through cables; the ultrasonic transmitting and receiving module 7 is fixed on the outer side of the crutch shell through an ultrasonic fixing module 12.

Preferably, the crutch head 13 is in threaded connection with the crutch shaft 14, and the crutch shaft 14 is in telescopic connection with the crutch base 16.

Preferably, the crutch shaft 14 is wrapped with a rubber sleeve.

Preferably, the battery 11 is a rechargeable battery.

Preferably, the crutch shell is provided with a grip mark at the hand-holding part.

Correspondingly, the invention also provides a using method of the ultrasonic blind guiding system, which comprises the following steps:

before the blind goes out, the blind needs to be provided with a dry battery for the system to work, and a switch button is pressed.

In the traveling process of the blind person when the blind person goes out, the eight SR-04 ultrasonic transmitters respectively transmit ultrasonic waves to eight directions, namely the right front direction, the right rear direction, the right left direction, the right direction, the front upper direction, the rear upper direction, the left upper direction and the right upper direction continuously, and the gyroscope and the magnetometer are used for detecting the movement direction and the acceleration of the crutch. And the main control STM32 single chip microcomputer processes data transmitted by the ultrasonic transmitter, the gyroscope and the magnetometer and analyzes the data.

If there is the barrier near the walking stick, the ultrasonic wave of ultrasonic emitter reflection is rebounded by the barrier to by ultrasonic emitter receipt, the data of main control STM32 singlechip processing ultrasonic emitter, gyroscope and magnetometer transmission calculate the distance and the position of barrier and walking stick, if the distance is less than 150cm, then control voice module and audio amplifier module work, the loudspeaker at walking stick grab handle department reports the position of barrier, simultaneously main control STM32 singlechip control is in the work of the vibrations module of holding the department, vibrations are with the suggestion blind person.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An ultrasonic blind guidance system, comprising:

a crutch rod part (14), one end of which is a crutch head part (13) and the other end is a crutch bottom part (16) along the axial direction;

the crutch head (13) comprising: the crutch shell (6) is a functional module wrapped by the crutch shell (6); the functional module includes: the main control STM32 chip (5), the vibration module (2), the voice module (3), the power module and the switch (1) are directly connected with the main control STM32 chip (5) through flat cables; the voice module includes: the voice processing chip (3) is directly connected with the main control STM32 chip (5) through a flat cable, and is connected with the voice processing chip (3) through the flat cable and is fixed on the horn of the crutch shell (6); the power module includes: the battery (11) is connected with the main control STM32(5) through a flat cable, is connected with the main control STM32 chip (5) through the flat cable and is fixed at a charging port on the crutch shell (6);

the walking stick pole portion includes: the rod part main body is a flat cable tube embedded in the rod part; one end of the wire arranging pipe is connected with the head (13) of the crutch, and the other end is connected with the bottom (16) of the crutch along the axial direction;

the crutch bottom (16) comprising: the walking stick comprises a walking stick shell, an ultrasonic transmitting and receiving module (7) embedded on the walking stick shell, an ultrasonic fixing module (12), a gyroscope (8) and a magnetometer (9) fixed at the bottom of the walking stick shell; the ultrasonic transmitting and receiving module (7), the gyroscope (8) and the magnetometer (9) are connected with the rod part (14) of the crutch through flat cables; the ultrasonic transmitting and receiving module (7) is fixed on the outer side of the crutch shell through an ultrasonic fixing module (12).

2. The ultrasonic blind guide system of claim 1, wherein the crutch head (13) is threadedly connected to the crutch shaft (14), and the crutch shaft (14) is telescopically connected to the crutch base (16).

3. An ultrasonic blind guide system as claimed in claim 1, wherein the crutch shaft (14) is wrapped with a rubber sleeve.

4. An ultrasonic blind guide system as claimed in claim 1, characterized in that the battery (11) is a rechargeable battery.

5. The ultrasonic blind guide system of claim 1, wherein the crutch housing is provided with a grip mark at the hand grip.