CN109828389B

CN109828389B - Navigation system

Info

Publication number: CN109828389B
Application number: CN201910130273.0A
Authority: CN
Inventors: 金英子
Original assignee: Zhejiang Zhihangxin Electronic Technology Co Ltd
Current assignee: Double Smart Linkage Technology Suzhou Co ltd
Priority date: 2016-06-13
Filing date: 2016-06-13
Publication date: 2020-06-09
Anticipated expiration: 2036-06-13
Also published as: CN106405873A; CN106405873B; CN109828389A

Abstract

A navigation system comprises a glasses frame, an image module, a voice module, a power module, a charging module and an infrared reflecting mark; the image module comprises an image processing unit, an infrared light source and an infrared camera, the infrared light source is used for emitting infrared light towards the infrared reflection mark, the infrared camera is used for capturing the infrared light reflected back by the infrared reflection mark and generating an infrared image, the image processing unit is used for analyzing and processing the infrared image generated by the infrared camera and transmitting a processing result to the voice module, and therefore a navigation function is achieved. The navigation system has the advantages of simple structure, low cost, strong implementability, accurate navigation, wide application range and the like.

Description

Navigation system

The application is a divisional application with application number 201610417605X, application date 2016, month 06, and month 13, and invention title "a navigation system".

Technical Field

The present invention relates to a navigation system, and more particularly to a navigation system for visually impaired or blind persons.

Background

According to the official estimation, the number of people with visual disorder in China reaches more than 5000 million in 2020, and about 45 million new blind people and 135 million low-vision blind people appear in China every year, namely 1 blind person and 3 low-vision patients appear in every minute. The current blind road design in China has many problems, the walking safety of the blind is seriously influenced by the problems of non-standard design, untimely maintenance, road occupation by barriers and the like, and the single blind road cannot meet the requirement of the blind on easy and free walking, so that how to enable the blind or a person with low eyesight to be integrated into the society to better live becomes the problem which needs to be solved urgently at present, and the primary task of solving the problem is to enable the blind to safely and freely walk in the urban space.

In recent years, many organizations or individuals have developed tools to assist the blind in walking, such as: the navigation stick with the loudspeaker has the advantages that light can be emitted at night to remind passers-by and drivers, and the navigation stick is easy to damage and too sensitive; the blind guiding shoes for detecting the front obstacle have the advantages that the shoes can be worn on feet, and have the defects of small measuring range and no voice prompt; the portable ultrasonic detection and GPS positioning device has the advantages of large measurement range, low local precision and high cost. At present, the types of navigation glasses specially designed for the blind are few, most of the navigation glasses are low in technical content or expensive, and the blind are inconvenient to go out due to the fact that the blind do not have the help of related equipment when going out.

Based on the defects of the prior art, the navigation glasses for the blind have the advantages of simple structure, convenience in carrying, low cost and high navigation precision.

Disclosure of Invention

The invention aims to provide a navigation system which comprises a glasses frame, an image module, a voice module, a power module, a charging module and an infrared reflecting mark, wherein the glasses frame is provided with a plurality of lenses; wherein,

the glasses frame comprises a glasses frame, a nose bridge, a first glasses leg, a second glasses leg, a first glasses leg and a second glasses leg, wherein the nose bridge is in a cuboid shape, and a rectangular through hole is horizontally formed in the center of the nose bridge;

the image module is positioned in the rectangular through hole and matched with the rectangular through hole, and comprises an image processing unit, an infrared light source and an infrared camera, wherein the infrared light source and the infrared camera are horizontally arranged at intervals; the infrared light source is used for emitting infrared light towards the infrared reflection mark, the infrared camera is used for capturing the infrared light reflected by the infrared reflection mark and generating an infrared image, and the image processing unit is used for analyzing and processing the infrared image generated by the infrared camera and transmitting a processing result to the voice module;

the voice module is positioned on the first glasses leg and close to the end part of the first glasses leg, and comprises a voice unit, an earphone interface and an earphone; the voice module sends a voice prompt to the blind person through the earphone according to the processing result of the image processing unit;

the first power supply module and the second power supply module are respectively positioned on the first glasses leg and the second glasses leg and close to the end part of the glasses frame, and are used for supplying power to the navigation system;

the charging module is positioned on the second glasses leg and close to the end part of the second glasses leg, comprises a charging unit and a charging interface and is used for charging the first power supply module and the second power supply module;

the infrared reflective mark is positioned in the ambient environment where the blind walks, is a pattern which is made of infrared reflective materials and has a marking function, and is used for reflecting infrared light emitted by the infrared light source.

Preferably, a plurality of LED flashes are mounted at the middle portions of the first and second temples.

Preferably, the infrared light source is an infrared light emitting diode LED or an LED array.

Preferably, the infrared camera is a wide-angle camera, and the shooting angle is 150 degrees.

Preferably, the horizontal interval between the infrared light source and the infrared camera is 1-2 cm.

Preferably, rotating shafts are further disposed at two ends of the image module, and the image module is fixed on a nose bridge through the rotating shafts and realizes 30-degree clockwise or counterclockwise angle rotation.

Preferably, the charging interface is a charging and data transmission two-in-one interface.

Preferably, a bluetooth module is arranged on the first earpiece.

Preferably, the voice module further comprises a microphone located on the headset.

Preferably, a GPS module is disposed on the second temple.

Preferably, the infrared reflective material is metal powder.

Preferably, the infrared reflective mark is in the form of a sheet that can be adhered or heat-fusible.

Preferably, the infrared reflective marks are patterns with marking function, and the patterns consist of one or more infrared reflective points on the blind road tiles.

Preferably, the infrared reflecting point is positioned in the middle of each strip-shaped bulge on the traveling blind sidewalk floor tile or on the surface of the circular bulge on the prompting blind sidewalk floor tile.

Preferably, the number of the infrared reflection points on the tile of the traveling blind sidewalk is 4, and the infrared reflection points are connected to form a straight line for indicating normal walking on the traveling blind sidewalk.

The distribution of the infrared light-reflecting points on the prompting blind road floor tile is as follows:

the prompting blind sidewalk floor tiles are provided with 8 infrared reflection points in total and are connected to form a square rotated by 45 degrees, and the square is used for indicating that the blind sidewalk floor tiles are about to enter a curve or a straight sidewalk;

the prompting blind sidewalk floor tile is provided with 5 infrared reflection points in total, and after connection, an oblique line inclined by 45 degrees to the right is formed for indicating turning to the right;

the prompting blind sidewalk floor tile is provided with 5 infrared reflection points in total, and after connection, the prompting blind sidewalk floor tile presents an oblique line inclined by 45 degrees to the left for indicating turning left;

the prompting blind road floor tiles are totally 8 infrared reflection points and are connected to form a T shape for representing a three-way intersection;

the prompting blind road floor tiles are provided with 9 infrared reflection points which are connected to form a cross shape and used for indicating a crossroad.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

Further objects, features and advantages of the present invention will become apparent from the following description of embodiments of the invention, with reference to the accompanying drawings, in which:

FIG. 1 schematically illustrates a schematic structural view of the navigation glasses of the present invention;

FIG. 2 schematically illustrates an application of the navigation system of the present invention;

3(a) to 3(f) schematically illustrate a blind road tile having an infrared reflective sign;

4(a) to 4(f) schematically show images of a blind road tile with an infrared reflective sign taken by an infrared camera;

fig. 5 schematically shows a view of an application scenario for the blind to use the navigation system of the present invention.

Detailed Description

The objects and functions of the present invention and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.

Fig. 1 shows a schematic structural diagram of a pair of navigation glasses 100 for the blind according to the invention. The navigation glasses 100 of the invention comprise a glasses frame 1, an image module 2, a voice module 3, a first power module 4, a second power module 5 and a charging module 6.

The eyeglass frame 1 includes a frame 101, a nose bridge 102, a first temple 103, a second temple 104, a first temple 105, and a second temple 106. The nose bridge 102 is used for connecting the two mirror frames 101, the nose bridge 102 is cuboid, a rectangular through hole is horizontally formed in the center of the nose bridge 102, and the through hole is used for placing the image module 2. A plurality of LED flashlights 7 are installed at the middle parts of the first and

second temples

103 and 104 for warning at night.

The image module 2 is positioned in the middle of the nose bridge 102 (shown in fig. 2), and comprises an image processing unit 201, an infrared light source 202 and an infrared camera 203; the infrared light source 202 is an infrared light emitting diode LED or an LED array. The infrared camera 203 is a wide-angle camera, and the shooting angle can reach 150 degrees. The infrared light sources 202 and the infrared cameras 203 are horizontally arranged at intervals, and the distance is about 1-2 cm.

The infrared camera 203 is used for acquiring infrared light emitted by the infrared light source 202 and reflected back, so as to form an infrared image. The image processing unit 201 processes and analyzes the acquired image, and finally transmits the analysis result to the voice module 3 and sends out a voice prompt.

Preferably, the two ends of the image module 2 are further provided with rotating shafts 204, and the rotating shafts 204 are fixed on the nose bridge 102 and realize 30-degree clockwise or counterclockwise angle rotation, so as to realize a multi-direction and multi-angle shooting function, for example, downwards and clockwise rotating by 30 degrees when the ground needs to be shot.

The voice module 3, which is located on the first temple 103 and near the end of the first temple 106, includes a voice unit 301, an earphone interface 302, and an earphone 303. The voice unit 301 issues different voice prompts according to different analysis results transmitted by the image processing unit 201.

The first power module 4 and the second power module 5 are respectively located on the first glasses leg 103 and the second glasses leg 104 and close to the end of the glasses frame 101, and are used for supplying power to the power utilization module of the navigation glasses 100, and the endurance of the navigation glasses 100 can be obviously improved by adopting dual power supplies.

The charging module 6 is located on the second temple 104 and near the end of the second temple 106, and includes a charging unit 601 and a charging interface 602, for charging the first power module 4 and the second power module 5. Preferably, the charging interface 602 is a charging data transmission two-in-one interface, which can implement a charging function and also perform data transmission, for example, voice data can be uploaded to the voice module 3 through the interface 602.

Preferably, a bluetooth module 8 is disposed on the first temple 105, and the bluetooth module 8 can communicate with other bluetooth-enabled devices, such as a smart phone, a wearable device, and the like. More preferably, the voice module 3 further comprises a microphone 304 disposed on the earphone 303, so that the blind 10 can use the bluetooth module 8 and the voice module 3 to automatically answer the phone call of the smart phone, and can also be used to listen to radio or music.

Preferably, the second earpiece 106 is provided with a GPS module 9 for positioning the general position of the blind 10 and providing voice navigation services, and the blind 10 can clearly know the general position of the blind in real time through the GPS module 9, such as a certain street, a certain landmark building, and the like, thereby effectively preventing the blind 10 from getting lost.

The navigation glasses 100 of the present invention mainly utilize an infrared reflective mark arranged in the surrounding environment where the blind 10 walks, wherein the infrared reflective mark is a pattern with a marking function made of an infrared reflective material (such as metal powder) and is used for reflecting infrared light emitted by the infrared light source 202. When the infrared light source 202 irradiates the surrounding infrared reflective marks, reflection occurs, at the moment, the infrared camera 203 captures the infrared reflective light and generates infrared images, the image processing unit 201 performs recognition processing on the infrared images and obtains recognition results (namely, the graphic meanings represented by the current infrared reflective marks), and finally the voice module 3 sends out different voice prompts according to different image recognition results, so that the walking safety of the blind is guaranteed.

The invention further provides a navigation system 200, wherein the navigation system 200 comprises the navigation glasses 100 and the infrared reflective marks, and the infrared reflective marks are divided into ground marks 11 and ground marks 12 as shown in fig. 2. The blind 10 can obtain the information of the ground mark 11 or the ground mark 12 through voice after wearing the navigation glasses 100, thereby realizing the navigation function. The ground mark 11 and the ground mark 12 are of a sheet structure which can be pasted or melted, so that the ground mark can be directly pasted or melted on the surface of a guideboard, a billboard, a wall surface, a blind road floor tile or a special signboard.

Fig. 3 to 5 show an embodiment of the navigation system 200 of the present invention, in which the infrared reflective markers (i.e. the ground markers 11) are formed by one or more infrared reflective dots 15, and the infrared reflective dots 15 form a pattern having a marking effect. The blind sidewalk tiles are divided into a traveling blind sidewalk tile 13 and a prompting blind sidewalk tile 14, wherein the traveling blind sidewalk tile 13 (shown in fig. 3(a)) is provided with a strip-shaped guide tile for guiding the blind or the blind to walk ahead with confidence; the prompting tiles with round dots are the blind road prompting tiles 14 (shown in fig. 3(b) to 3(f)) for prompting the blind persons or the space environment in front of the blind persons to change, and are arranged at the starting point, the ending point and the turning point of the blind road prompting tiles 13.

As shown in fig. 3(a), infrared reflective dots 15 are adhered, fused or embedded in the middle of each strip-shaped protrusion on the traveling blind sidewalk floor tile 13, and can also be integrally formed with the traveling blind sidewalk floor tile 13, and all 4 infrared reflective dots 15 are connected and appear straight lines to form a figure (i.e., an infrared reflective mark) with a marking function, so as to mark the width of the traveling blind sidewalk floor tile 13 and prevent the blind person 10 from deviating from the blind sidewalk when walking.

Similarly, as shown in fig. 3(b) to 3(f), the infrared reflective dots 15 are selectively adhered, melted or embedded on the circular convex surfaces of the indicating blind road tiles 14, or can be integrally formed with the indicating blind road tiles 14 during manufacturing; wherein 8 infrared reflective points 15 in fig. 3(b) are connected to form a square rotated by 45 degrees, 5 infrared reflective points 15 in fig. 3(c) are connected to form a slant line inclined by 45 degrees to the right, 5 infrared reflective points 15 in fig. 3(d) are connected to form a slant line inclined by 45 degrees to the left, 8 infrared reflective points 15 in fig. 3(e) are connected to form a T-shape, and 9 infrared reflective points 15 in fig. 3(f) are connected to form a cross-shape, which are respectively used for indicating that the vehicle is about to enter a curve or a straight road, turn right, turn left, turn three-way road and intersection.

When the infrared camera 203 of the navigation glasses 100 shoots the blind road floor tiles forwards and downwards, different mark shapes can be obtained, the image processing unit 201 analyzes which kind of mark is specific, and the analysis result is further transmitted to the voice module 3, so that the earphone 303 gives out voice to prompt the blind 10 to pay attention to the blind road turning. The navigation system 200 of the invention can accurately identify the prompt information of the blind road in front of the blind 10 in the walking process and whether the front is provided with an obstacle, and simultaneously, the GPS module 9 is combined to position the blind 10, thus effectively improving the range of motion and walking safety of the blind 10.

Because urban blind sidewalks are not constructed in a standard way or the blind sidewalks are occupied by other objects, and the like, the blind people 10 walk on the blind sidewalks with certain safety risks, the navigation system 200 can effectively solve the problem, the infrared camera 203 acquires images of the infrared identification points 15 on the blind sidewalks, the images are analyzed by the image processing unit 201 to exclude or not completely include the infrared identification points 15, and the voice module 3 prompts the blind sidewalks in front of the blind people 10 to have obstacles, so that the walking safety of the blind people 10 on the blind sidewalks is effectively guaranteed.

Fig. 5 shows an application scene diagram of the blind 10 using the navigation system of the invention, the blind 10 wearing the navigation glasses 100 of the invention walks on the blind road, and the shooting angle of the infrared camera 203 is adjusted so as to shoot the infrared reflective dots 15 on the tiles of the blind road forward and downward. As shown in fig. 5, the blind 10 will hear in sequence at the first turn the voice prompts of entering a curve from a straight road, turning right, entering a straight road from a curve, and the like; the voice prompts of entering a three-way intersection from a straight road, turning left or turning right, entering a straight road from a curved road and the like can be sequentially heard at the second turning, and when the blind 10 deviates from the blind road in the walking process, the voice module 3 can give out a prompt and guide the blind to walk back on the blind road.

The navigation glasses and the navigation system can effectively help the blind 10 to safely walk in the urban space or on the blind road with the infrared reflective marks, simply and efficiently solve the problem of low utilization rate of the urban blind road, only the infrared reflective marks need to be added on the existing blind road, the moving range of the blind is improved, and the navigation glasses and the navigation system have the advantages of simple structure, low cost, strong practicability, accurate navigation, wide application range and the like.

The figures are merely schematic and not drawn to scale. While the invention has been described in connection with preferred embodiments, it should be understood that the scope of the invention is not limited to the embodiments described herein.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A navigation system comprises a glasses frame, an image module, a voice module, a power module, a charging module and an infrared reflecting mark; wherein,

the first power supply module and the second power supply module are respectively positioned on the first glasses leg and the second glasses leg and close to the end part of the glasses frame and are used for supplying power to the navigation system;

the infrared reflective mark is positioned in the ambient environment where the blind person walks, is a pattern which is made of infrared reflective materials and has a marking function, and is used for reflecting infrared light emitted by the infrared light source;

a GPS module is arranged on the second glasses leg; the infrared reflective material is metal powder;

the structure of the infrared reflective mark is a sheet which can be pasted or melted;

the infrared reflective marks are divided into ground marks and ground marks;

a plurality of LED flash lamps are arranged in the middle of the first glasses leg and the second glasses leg;

the infrared light source is an infrared Light Emitting Diode (LED) or an LED array;

the voice module further comprises a microphone positioned on the earphone

The infrared reflective mark is a pattern with a marking function, which is composed of one or more infrared reflective points on the blind road floor tile;

the infrared light reflecting points are positioned in the middle of each strip-shaped bulge on the floor tile of the advancing blind sidewalk or on the surface of the circular bulge on the floor tile of the prompting blind sidewalk;

the number of the infrared reflecting points on the tile of the traveling blind sidewalk is 4, and the infrared reflecting points are connected to form a straight line for indicating that the tile normally travels on the traveling blind sidewalk;

the distribution of the infrared light-reflecting points on the prompting blind road floor tile is as follows: the prompting blind sidewalk floor tiles are provided with 8 infrared reflection points in total and are connected to form a square rotated by 45 degrees, and the square is used for indicating that the blind sidewalk floor tiles are about to enter a curve or a straight sidewalk; the prompting blind sidewalk floor tile is provided with 5 infrared reflection points in total, and after connection, an oblique line inclined by 45 degrees to the right is formed for indicating turning to the right; the prompting blind sidewalk floor tile is provided with 5 infrared reflection points in total, and after connection, the prompting blind sidewalk floor tile presents an oblique line inclined by 45 degrees to the left for indicating turning left; the prompting blind road floor tiles are totally 8 infrared reflection points and are connected to form a T shape for representing a three-way intersection; the prompting blind road floor tiles are provided with 9 infrared reflection points which are connected to form a cross shape and used for indicating a crossroad.

2. The navigation system of claim 1, wherein: the infrared camera is wide-angle camera, and the shooting angle is 150 degrees.

3. The navigation system of claim 2, wherein: the charging interface is a charging and data transmission two-in-one interface.