CN212816753U

CN212816753U - Non-implanted virtual visual display instrument for blind people

Info

Publication number: CN212816753U
Application number: CN202020395185.1U
Authority: CN
Inventors: 郑薇薇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-03-30
Anticipated expiration: 2030-03-25

Abstract

The utility model belongs to the technical field of belong to blind person auxiliary assembly, a virtual visual display appearance of non-implanted blind person is related to, including transmitter and receiver, the receiver is including receiving transmitter wireless signal's wireless receiving module, image processing chip, array electrode and battery, array electrode and blind person's tongue face contact, array electrode include a plurality of line electrodes and row electrode, and an electrode point of line electrode and an electrode point of row electrode form an opposite stimulation point, wireless signal is selected from bluetooth, zigbee, wifi, mobile network, infrared ray, microwave, the radio through the modulation, the flat board of transmitter for having wireless transmitting function, cell-phone, computer or supporting transmitter. The utility model provides a virtual visual display appearance of non-implanted blind person adopts wireless transmission, and is pleasing to the eye convenient, has avoided the risk of electric shock, simultaneously greatly reduced the cost.

Description

Non-implanted virtual visual display instrument for blind people

Technical Field

The utility model belongs to the technical field of blind person auxiliary assembly, a virtual visual display appearance of non-implanted blind person is related to.

Background

China is the country with the most blind people in the world, and the total number of blind people accounts for about 1/5. With the improvement of living standard, the desire of the blind to know more of the world and better integrate into the society is stronger and stronger. Vision is the most intuitive way to know the world, but due to physiological defects, blind people cannot intuitively acquire external information through vision, which causes great inconvenience in the aspects of learning, life, work and the like. With the continuous improvement of the civilization degree of the society, the blind people are more and more concerned by the society. The biggest problem in the life of the blind is that the mobility and the range of action are limited and the safety of the action is not guaranteed because the blind cannot visually acquire information. Knowledge of ingestion is also limited visually.

The human eye can see things clearly because 200 tens thousands of optic nerves send optical signals to the retina, which in turn converts the optical signals into nerve impulses that are transmitted to the brain, allowing us to see the shape of the object. Tongue sensing is sensitive to electrical stimulation and requires less voltage to create the electrical stimulation. Thus, by stimulating the tongue, it becomes possible for the blind to "see things" through the tongue's tactile sensation.

Chinese patent application CN107157717A discloses an object detection, analysis and prompting system for providing visual information to the blind. The method comprises the following steps: a) an apparatus for acquiring visual information from an environment, the apparatus comprising a digital camera located in a head-mounted device; b) means for detecting and/or identifying landmarks in the visual information, the means comprising a processor located in a controller present in the headset and/or a processor located on a remote computer for analyzing the visual information; and c) means for providing feedback relating to the detection and/or identification of landmarks within the visual information, the means comprising a haptic device and/or an auditory device. The disadvantages of the above-mentioned devices are: firstly, the equipment needs cable connection, so that the appearance is not beautiful and inconvenient, and the risk of electric shock exists; secondly, the equipment has complex structure and high cost, and the price of one set of equipment is up to ten thousand dollars.

In addition, with the development of the times, computers, tablets and mobile phones have strong functions, can surf the internet, read books and the like, and are also provided with devices such as cameras, Bluetooth and the like. If the blind can indirectly see the screen contents of a computer, a tablet and a mobile phone, the biggest problem in the life of the blind can be partially solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a virtual visual display appearance of non-implanted blind person, adopt wireless transmission, pleasing to the eye convenience has avoided the risk of electric shock, simultaneously greatly reduced the cost.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

a non-implanted virtual visual display instrument for blind people comprises a transmitter and a receiver, wherein the receiver comprises a wireless receiving module for receiving wireless signals of the transmitter, an image processing chip, an array electrode and a battery, the array electrode is in contact with the tongue surface of the blind people, the array electrode comprises a plurality of row electrodes and a plurality of column electrodes, and one electrode point of each row electrode and one electrode point of each column electrode form a stimulation point facing the tongue surface.

The stimulation points are generated in such a way that the row electrodes and the column electrodes generate stimulation currents, and the currents near the junction are the largest, so that the stimulation points are generated.

The wireless signal is selected from Bluetooth, zigbee, wifi, mobile network, infrared, microwave, modulated radio.

The transmitter is a tablet, a mobile phone or a computer with a wireless transmitting function.

The working principle of the transmitter is as follows: taking a receiver using a bluetooth module and a computer as an example of a transmitter, after the bluetooth of the computer is connected with the receiver, a part (such as a video, a picture, a webpage and an electronic book) to be transmitted by the computer is extracted and converted into a grayscale picture. And then compressing the gray picture pixels into a 4-level gray picture with 32x24 points (taking 4-level gray as an example), wherein the brightness is highest at 3 and the darkest at 0, converting the picture with 32x24 points with the first transmission gray being more than or equal to 3 (brightest) into 192 character groups with 16 systems and transmitting the character groups to the wireless transmitting module, and transmitting the picture with the second transmission gray being more than or equal to 2 character groups and the like. Because the transmission speed is very fast, after 4 times of picture transmission is finished, the stimulation time of the tongue with large brightness is long, the dark stimulation time is short, and a gray picture which changes along with the brightness is formed in the brain. The continuous picture transmission forms a virtual vision.

The transmitter can also be a matched transmitter, and comprises a camera, a video processing chip and a wireless transmitting module.

The working principle of the transmitter is as follows: the video processing chip reads a camera video signal to generate a gray picture, and compresses the pixels of the gray picture into a picture with 32x24 points of 4-level gray (taking 4-level gray as an example), the brightness is 3 at the highest, the darkest is 0, the picture with 32x24 points of which the gray transmitted for the first time is more than or equal to 3 (brightest) is converted into 192 character groups with 16 systems and transmitted to the wireless transmitting module, the picture with the gray transmitted for the second time is more than or equal to 2 character groups, and the like. Because the transmission speed is very fast, after 4 times of picture transmission is finished, the stimulation time of the tongue with large brightness is long, the dark stimulation time is short, and a gray picture which changes along with the brightness is formed in the brain.

The working principle of the receiver is as follows: taking the 32x24 electrode dot matrix as an example, the receiving chip receives the picture buffer data, and the picture buffer data is displayed with 24 lines of 192 groups of 16-ary characters, each line of 8 16-ary characters corresponds to a line of 32 dots, thereby displaying a 32x24 picture. The picture brightness is divided into 4-level gray scale, the picture is transmitted for 4 times, the brightest point is displayed in each picture, and the brightest point is displayed for 3 times in 4 transmissions. And so on, the darkest or black is not displayed. The gray level calculation is completed at the transmitter end, and the receiving end only displays the received 2-system picture. Continuous pictures can generate virtual vision. The 32x24 electrode lattice may be expanded into 8 times of 32x32,48x32, 64x48, etc. The 4-level gray scale may be adjusted to 8-level gray scale.

The working principle of the array electrode is as follows: the image processing chip is used as a control core, a row and column driving circuit is used, dynamic scanning display is applied, dynamic scanning is simply that voltage is output row by row in turn, when a certain column of low level is formed, current is formed, electrodes generate a point to electrically stimulate the tongue every time, and the level is quickly pulled down row by row to form tongue electrical stimulation at different positions. When the tongue nerve is stimulated by the electric pulses, the pulse stimulation signals are transmitted to the brain, and the visual area in the brain is restored into a picture, so that the blind can see objects through the touch of the tongue.

The battery is a direct current low voltage lithium battery. Preferably 3.7v lithium battery, has no influence on human body.

The shape of the electrode is semicircular, circular, arc or finger-shaped.

The receiver has a waterproof function to facilitate its placement in the mouth, such as with waterproof designs commonly used in the art.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses a mode of wireless transmission receives the image signal of fixed form, and the receiver is put into the mouth, tongue and array electrode contact. The electric wire can not be seen from the surface of the face, so that the aesthetic feeling is improved, and the limitation of the electric wire is thoroughly eliminated. And meanwhile, the electric shock risk is avoided.

2. The utility model discloses an array electrode restores the picture, and as long as the receiver satisfies wireless receiving format, electrode array will produce the image signal of telecommunication, amazing tongue, forms virtual image in the head. The equipment cost is greatly reduced.

3. The utility model discloses can use computer, cell-phone, flat board etc. as the transmitter, can make the convenient information on receiving computer, cell-phone, the flat board of blind person, information is not restricted to picture information yet, can also be character information, webpage information to the range of application of the virtual visual display appearance of blind person has been expanded.

Drawings

Fig. 1 is a schematic diagram of an array electrode of the present invention;

FIG. 2 is a partial row selection driving diagram of the present invention;

fig. 3 is a schematic diagram of a receiver of the present invention;

FIG. 4 is a schematic diagram of the present invention;

fig. 5 is a working schematic diagram of the present invention using a matching transmitter.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 5:

a non-implanted virtual visual display instrument for blind people comprises a transmitter and a receiver, wherein the receiver comprises a wireless receiving module for receiving wireless signals of the transmitter, an image processing chip, an array electrode and a battery, the array electrode is in contact with the tongue surface of the blind people, the array electrode comprises a plurality of row electrodes and column electrodes, and one electrode point of each row electrode and one electrode point of each column electrode form an opposite stimulation point.

Referring to fig. 1, the array electrode is composed of 24 rows of electrodes and 32 columns of electrodes, the shape of the electrodes can be semicircular, circular, arc-shaped and finger-shaped, and the electrodes can be directly made of multilayer printed circuit board gold plating. The electrode part is directly contacted with the tongue surface, and is safe and nontoxic. The electrodes are electrically stimulated by current, row electrodes are rapidly and alternately gated, and the column electrodes form patterns.

Referring to fig. 2, a partial column selection drive is taken as an example: the column selection driver mainly comprises 4 displacement buffers with 8-bit serial input and parallel output. The parallel output is a tri-state output. At the rising edge of SRCK, serial data is input into the internal 8-bit shift register by SER and output by QH1, and parallel output is to store the data in the 8-bit shift register into the 8-bit parallel output register at the rising edge of RCK. When the control signal of the serial data input end OE is enabled in a low mode, the output value of the parallel output end is equal to the value stored in the parallel output register. One row of electrical stimulation can be generated by inputting 8 16-system data.

Referring to the attached fig. 3-5, the working process of the present invention is as follows: the method comprises the steps of installing picture processing software (gray level compression is the basic function of the existing picture processing software) on a computer, a mobile phone and a tablet, extracting a part of a screen of the computer, the mobile phone and the tablet into a picture, or directly using the picture in the computer, the mobile phone and the tablet, or generating the picture by using a camera on the computer, the mobile phone and the tablet, and then compressing the picture into a picture with 4-level gray level 32x24 pixels. The data is sent to the wireless receiving module in a wireless mode, the received data is transmitted to the image processing chip in a serial data format, and then the driving array electrodes are driven to generate current. The blind can form virtual vision in the brain after practice, so that the blind can see the contents of a computer, a mobile phone and a tablet.

The pictures can be properly processed to facilitate the blind to recognize the pictures, and the number of the pictures sent per second can be adjusted according to the acceptance of the blind.

When the matched emitter is used, the camera is used for shooting, the video processing chip is used for extracting pictures, and then the pictures are emitted through the wireless emitting module. The matched emitter can be moved more conveniently.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A non-implanted virtual visual display instrument for blind people comprises a transmitter and a receiver, and is characterized in that the receiver comprises a wireless receiving module for receiving wireless signals of the transmitter, an image processing chip, an array electrode and a battery, wherein the array electrode is in contact with the lingual surface of the blind people, the array electrode comprises a plurality of row electrodes and column electrodes, and one electrode point of each row electrode and one electrode point of each column electrode form a stimulation point opposite to the lingual surface.

2. The non-implantable blind virtual visual display apparatus according to claim 1, wherein said transmitter is a tablet, a mobile phone or a computer with wireless transmission function.

3. The non-implantable blind virtual visual display device according to claim 1, wherein said transmitter is a companion transmitter comprising a camera, a video processing chip and a wireless transmission module.

4. The non-implantable blind virtual visual display apparatus according to claim 1, wherein said wireless signal is selected from bluetooth, zigbee, wifi, mobile network, infrared, microwave.

5. The non-implantable virtual visual display for the blind according to claim 1, wherein said battery is a direct current low voltage lithium battery.

6. The non-implantable blind virtual visual display apparatus according to claim 1, wherein said electrodes are in the shape of a semicircle, circle, arc or finger.