CN202816213U - Word learning auxiliary device for the blind - Google Patents

Abstract

The utility model discloses a literacy auxiliary device for the blind and an operation method thereof, comprising a control chip and a display for the blind, the work of the display for the blind is controlled by the control chip, and the display for the blind includes an orifice plate, a needle plate and a needle plate lifting device; There are through holes on the orifice plate, the needle plate is located below the orifice plate, and there is a needle-shaped object under each through-hole on the orifice plate, the needle-shaped object is installed on the needle plate, and the needle plate lifting device is used to Control the rise and fall of the needle; control the chip to read Braille or image content, control the display of the blind to display the text through the protrusion of the needle, for the blind to touch and recognize the text, and call the intelligent voice module to pronounce the text issue.

Description

A literacy aid for the blind

technical field

The utility model relates to a literacy auxiliary device and an operation method thereof, in particular to a literacy auxiliary device for the blind and an operation method thereof.

Background technique

Existing literacy aids for the blind roughly include the following types:

1>. Traditional copybooks for the blind. Such as the patent "literacy cards for the blind" whose application number is 99203092.7. In this method, Braille is printed on cardboard to form a complete set of copybooks, and blind people can learn to read by directly touching the raised Braille on the copybooks. The main disadvantage of this method is that the copybook cannot be reused. In addition, when a blind person touches the braille on the copybook, since the voice synchronization cannot be achieved, others need to be assisted to remind the meaning of the braille, which cannot achieve the effect of unassisted and independent learning.

2>. The realization of the electromagnetic solenoid. According to the resolution requirements of the display, that is, make equal needles according to the number of pixels, and use electromagnetic solenoids to control each needle. When there is black writing at the pixel, control the needle at that place thing protruding upwards. The disadvantage of this solution is mainly that the required number of electromagnetic solenoids is large, it is not feasible when there are many pixels, and the power consumption is relatively large.

3>. Use high-tech materials to make displays for the blind and complete Braille protrusions. At present, there is another implementation scheme of a display for the blind, which can achieve the effect of a literacy aid for the blind when combined with other resources. The realization method of this kind of display is to use special materials, so that under the stimulation of the electric field, the place with writing can be deformed to form protrusions, so that it can be recognized by touch for the blind. Its main disadvantage is that it is expensive and cannot be widely promoted at present.

Utility model content

Aiming at the above-mentioned shortcomings existing in the existing auxiliary devices for literacy for the blind, the utility model proposes an auxiliary device for literacy for the blind and an operation method thereof.

The technical scheme adopted in the utility model is as follows.

A literacy assisting device for the blind, which includes a control chip and a display for the blind, the work of the display for the blind is controlled by the control chip, and the display for the blind includes an orifice plate, a needle plate and a needle plate lifting device; the orifice plate is provided with a through hole, The needle plate is located under the orifice plate, and there is a needle under each through hole on the orifice plate, the needle is installed on the needle plate, and the needle plate lifting device is used to control the rise and fall of the needle ; The front of the orifice plate is for the blind to touch and recognize handwriting, and the back side of the orifice plate is provided with a switch device for controlling the opening and closing state of the through hole. Each through hole is equipped with a switch device. When the through hole is in an open state, the through hole The upper end of the needle at the bottom can pass through the orifice plate. When the through hole is closed, the upper end of the needle below the through hole cannot pass through the orifice plate; the control chip reads Braille, and controls the display for the blind to protrude the text through the needle The through-holes on the orifice plate are arranged in a row, and whether each needle passes through the through-hole represents whether there is a Braille bump there.

Further, the literacy auxiliary device for the blind also includes a mechanical arm device, the mechanical arm device includes a Y-axis motor, an X-axis motor and a toggle device, a Y-axis worm is connected to the Y-axis motor shaft, and a Y-axis worm is arranged on the Y-axis worm The worm slider, the X-axis motor is fixedly connected above the Y-axis worm slider, the motor gear of the X-axis motor meshes with the teeth on the X-axis slider, and the rightmost end of the X-axis slider is provided with a switch for switching the switch A toggle device, the toggle device performs two-dimensional movement driven by the Y-axis motor and the X-axis motor, and the work of the Y-axis motor and the X-axis motor is controlled by the control chip.

Further, the switch device includes a limit slot and a sliding block that can slide in the limit slot. When the slide block slides toward the center of the through hole, the through hole is blocked, and the switch device is closed; when the slide block moves away from When the center of the through hole slides, the switch device is opened; the movement of the sliding block is generated by the toggle device.

Further, the width of both ends of the sliding block in its sliding direction is greater than the width of the limiting groove, so as to ensure that the sliding block will not completely slide out of the limiting groove and fall off; the rows in the determinant arrangement and the sliding direction of the sliding block vertical.

Further, the lower end of the needle is installed on the needle plate through the needle plate spring.

Further, the toggle device can toggle any sliding block under the drive of the X-axis motor and the Y-axis motor. The opening operation is performed on the opened through hole, and the closing operation can be performed on the through hole that needs to be closed in another row of through holes.

Further, the toggling device includes a motor, a worm, a slider and a toggling rod, a worm is fixedly connected to the motor shaft, a slider is arranged on the worm, the slider is fixedly connected to the toggling rod, and the operation of the motor of the toggling device Controlled by the control chip, when the motor is in the forward and reverse direction, the worm drives the slider and the toggle rod to move axially. At the beginning, the slider is in the middle of the worm. Driven by the motor, the slider can move along the axial direction of the worm. Make the movement, and make the end of the toggle lever toggle the sliding block of the switch device on the orifice plate to realize the opening and closing action of the through hole on the orifice plate.

Further, the literacy assisting device for the blind also includes an SD card, an intelligent voice sounding module, and a determinant keyboard, and the SD card, the intelligent voice sounding module, and the determinant keyboard are respectively electrically connected to the control chip; the SD card is used to pre- Braille data is stored, the intelligent voice module is used to announce the pronunciation of the text, and plays the auxiliary function of synchronous prompting, and the determinant keyboard is used to provide repeated voice and page turning operations.

The operation method of the above-mentioned assisting device for literacy for the blind, after initialization, the control chip reads Braille or image content, controls the display for the blind to display the text through needle-like protrusions, for the blind to touch and recognize the text, and calls the intelligent voice sounding module The pronunciation of the text is pronounced, and through the operation of the determinant keyboard, the blind person can control the functions of turning pages up and down, refreshing the display, and repeating the voice of the text.

Further, the working process of the display for the blind is: the needle plate lifting device lowers the needle plate, and the toggle device in the mechanical arm device starts to operate the switch device on the orifice plate according to the distribution of the Braille bumps. At the point, open the switch device on the orifice plate; at the place without braille bumps, turn off the switch device on the orifice plate; after the operation of the toggle device is completed, the needle plate lifting device will raise the needle plate, Since the switch device on the orifice plate is opened, the needle at the corresponding position on the needle plate can protrude upward through the through hole on the orifice plate; at the point where there is no Braille bump, because the switch device on the orifice plate is closed, Block the needles at the corresponding positions on the needle plate from passing through the through holes.

Compared with the prior art, the utility model has advantages and beneficial effects as follows:

1. The literacy assisting device for the blind of the utility model can effectively achieve the function of assisting the literacy of the blind, and its core technology, the implementation method of the display for the blind, is relatively low in cost and has good scalability;

2. At the same time, the computer control technology is used to achieve the real synchronization of Braille and voice prompts, which is of great help to the literacy of the blind.

3. The display for the blind can be used as an application alone to display other text and images.

Description of drawings

Fig. 1 is the overall frame schematic diagram of the present utility model.

Fig. 2 is a structural schematic diagram of the display for the blind of the present invention.

Fig. 3 is a schematic diagram of the orifice plate structure of the display for the blind of the present invention.

Fig. 4 is a structural schematic diagram of the mechanical arm device of the display for the blind of the present invention.

Fig. 5 is a structural schematic diagram of the toggle device of the display for the blind of the present invention.

Fig. 6 is a schematic diagram of the improved structure of the needle plate of the display for the blind of the present invention.

The figure shows:

1—control chip, 2—SD card, 3—display for the blind, 4—intelligent voice module, 5—determinant keyboard, 6—hole plate, 7—mechanical arm device, 8—needle plate, 9—needle plate spring, 10—needle, 11—Z-axis motor, 12—Z-axis worm, 13—Z-axis worm slider, 14—through hole, 15—limiting slot, 16—sliding block, 17—moving track of toggle device, 18—Y-axis motor, 19—Y-axis worm, 20—Y-axis worm slider, 21—X-axis motor, 22—motor gear, 23—X-axis slider, 24—toggle device, 25—motor, 26— Worm screw, 27—slide block, 28—toggle rod, 29—sleeve.

Detailed ways

The implementation of the utility model will be further described below in conjunction with the accompanying drawings, but the implementation and protection scope of the utility model are not limited thereto.

As shown in FIG. 1 , a literacy aid for the blind includes a control chip 1 , an SD card 2 , a display for the blind 3 , an intelligent voice module 4 , and a determinant keyboard 5 . The SD card 2, the blind person's display 3, the intelligent voice sounding module 4, and the determinant keyboard 5 are electrically connected to the control chip 1 respectively; the SD card 2 is used for pre-stored Braille data, and the blind person's display 3 is used to form a protrusion for the blind person to touch Recognize text or images, the intelligent speech sound module 4 realizes the conversion from text to speech, and is used to announce the pronunciation of text, and plays the auxiliary function of synchronous prompting. The determinant keyboard 5 is used to provide repeated sounding and page turning operations. The work of the display 3 for the blind is controlled by the control chip 1 .

As shown in accompanying drawing 2,3, described blind person display 3 comprises orifice plate 6, mechanical arm device 7, needle plate 8 and needle plate elevating device; Orifice plate 6 is provided with through hole 14, and needle plate 8 is positioned at orifice plate 6. The bottom of each through hole 14 on the orifice plate 6 has a needle 10, the needle 10 is installed on the needle plate 8, and the needle plate lifting device is used to control the rise and fall of the needle 10. decline; the front of the orifice plate 6 is provided for the blind to touch and recognize handwriting, and the back side of the orifice plate 6 is provided with a switch device for controlling the opening and closing state of the through hole 14, and each through hole 14 is equipped with a switch device, when the through hole 14 is When in the open state, the upper end of the needle 10 below the through hole 14 can pass through the orifice 6, and when the through hole 14 is in a closed state, the upper end of the needle 10 below the through hole 14 cannot pass through the orifice 6; The through-holes 14 on the board 6 are arranged in a determinant, and whether each needle-shaped object 10 passes through the through-hole 14 represents whether there is a Braille bump there.

As shown in FIG. 4 , the X-axis of the rectangular coordinate system is perpendicular to the plane where the axis of the X-axis motor 21 and the axis of the Y-axis motor 18 are located, and the Y-axis is parallel to the axis of the Y-axis motor 18 . The mechanical arm device 7 includes a Y-axis motor 18, an X-axis motor 21 and a toggle device 24. The Y-axis motor 18 is connected with a Y-axis worm 19, and the Y-axis worm 19 is provided with a Y-axis worm slider 20. An X-axis motor 21 is fixedly connected above the Y-axis worm slider 20 , and the motor gear 22 of the X-axis motor 21 meshes with the teeth on the X-axis slide bar 23 . The rightmost end of the X-axis slide bar 23 is provided with a toggling device 24 for toggling the switch device. The toggling device 24 moves in two dimensions under the drive of the Y-axis motor 18 and the X-axis motor 21, and the Y-axis motor 18 and the work of the X-axis motor 21 are controlled by the control chip 1 .

As shown in Figure 3, the switch device includes a limiting groove 15 and a sliding block 16 that can slide in the limiting groove 15. When the sliding block 16 slides toward the center of the through hole 14, the through hole 14 is blocked, Then the switch device is closed; when the sliding block 16 slides away from the center of the through hole 14 , the switch device is opened; the movement of the sliding block 16 is generated by the toggle device 24 .

The width of both ends of the sliding block 16 in its sliding direction is greater than the width of the limiting groove 15, so as to ensure that the sliding block 16 will not completely slip out of the limiting groove 15 and fall off; the row and sliding block 16 in the determinant arrangement The sliding direction is vertical.

As shown in Figure 2, the lower end of the needle 10 is installed on the needle plate 8 through the needle plate spring 9.

As a further improvement, as shown in accompanying drawing 6, a sleeve 29 can be set outside the needle plate spring 9 and the needle 10 for restraint, so as to ensure that the needle plate spring 9 and the needle 10 are only along the axial direction of the sleeve 29. movement, no swinging movement occurs.

The above-mentioned toggle device 24 can toggle any sliding block 16 under the drive of the X-axis motor 21 and the Y-axis motor 18, and when the toggle device 24 is located between two rows of through holes, it can pass through one of them. The through-holes that need to be opened in the holes are opened, and the through-holes that need to be closed in the other row of through-holes are closed.

Accompanying drawing 3 shows a kind of feasible motion plan, and the motion locus 17 of toggle device is " bow " font route. When the toggle device 24 moves from one end of the first row to the other end, it can perform a closing operation on the through holes to be closed in the row of through holes. Move sequentially according to the "bow"-shaped route. When the toggle device 24 is located between the two rows of through holes, it can open the through holes that need to be opened in one of the through holes, and can simultaneously open the through holes that need to be closed in the other row of through holes. The via is closed. When the toggle device 24 moves from one end of the last row to the other end, it can open the through holes to be opened in the row of through holes. The "bow" font can be adjusted according to actual needs. If some rows do not need to open or close the through holes, you can directly move along the direction perpendicular to the row at both ends of the row instead of operating in the row direction.

As shown in accompanying drawing 5, described toggling device 24 comprises motor 25, worm screw 26, slide block 27 and toggle lever 28, and worm screw 26 is fixedly connected on motor 25 axles, and slide block 27 is set on worm screw 26, slide block 27 It is fixedly connected with the toggle rod 28, and the operation of the motor 25 of the toggle device is controlled by the control chip 1. When the motor 25 is reversing, the slider 27 and the toggle rod 28 are driven by the worm 26 to move axially, and start When the slide block 27 is in the middle position of the worm screw 26, under the drive of the motor 25, the slide block 27 can move along the axial direction of the worm screw 26, and the end of the toggle rod 28 can move the slide block 16 of the switch device on the orifice plate 6 to realize The opening and closing action of the through hole 14 on the orifice plate 6.

As shown in FIG. 2 , the needle plate lifting device includes a Z-axis motor 11 , a Z-axis worm 12 , and a Z-axis worm slider 13 . The Z-axis worm slider 13 is arranged on the Z-axis worm 12 and above the Z-axis motor 11 . The needle plate 8 is fixedly connected above the Z-axis worm slider 13, and when the Z-axis motor 11 rotates forward and reverse, it can drive the needle plate 8 to rise or fall. The operation of the Z-axis motor 11 is controlled by the control chip 1 .

The intelligent voice sounding module 4 can adopt the chip SYN6288. The intelligent voice sounding module 4 receives text data through serial port communication, and realizes text-to-speech conversion; it is directly connected with the control chip 1 through serial port pins, without level conversion.

The operating method of a blind person's literacy auxiliary device of the utility model is characterized in that, after initialization, the control chip 1 reads Braille or image content, and controls the blind person's display 3 to display the characters through the protruding needle-like object 10 for the blind person Touch to recognize the text, and call the intelligent speech sound module 4 to pronounce the text. Through the operation of the determinant keyboard 5, the blind person can control the functions of turning pages up and down, refreshing the display and repeating the text playback.

The above-mentioned operation method of a blind person's literacy auxiliary device is characterized in that the working process of the blind person's display 3 is: the needle plate lifting device lowers the needle plate 8, and the toggle device 24 in the mechanical arm device 7 starts The distribution of the switch device on the orifice plate 6 is operated, and the switch device on the orifice plate 6 is opened when there is a Braille bump; the switch device on the orifice plate 6 is closed when there is no Braille bump; the toggle device 24 After the operation is completed, the needle plate elevating device will raise the needle plate 8. At the place where there are Braille bumps, since the switch device on the orifice plate 6 is opened, the needles 10 at the corresponding positions on the needle plate 8 can pass through the orifice plate 6. The through hole 14 on the top protrudes upwards; at the place where there is no Braille bump, because the switch device on the orifice plate 6 is closed, the needle 10 at the corresponding position on the blocking needle plate 8 passes through the through hole 14. Therefore, it can be used for touch recognition by the blind, and the function of the display for the blind is realized.

Claims (8)

1. A literacy aid for the blind is characterized in that it comprises a control chip, a display for the blind, and the work of the display for the blind is controlled by the control chip, and the display for the blind includes an orifice plate, a pin plate and a pin plate elevating device; There are through holes, the needle plate is located under the orifice plate, and there is a needle under each through hole on the orifice plate, the needle is installed on the needle plate, and the needle plate lifting device is used to control the needle The rise and fall of the orifice plate; the front of the orifice plate is for the blind to touch and recognize handwriting, and the back of the orifice plate is provided with a switch device for controlling the opening and closing state of the through hole. Each through hole is equipped with a switch device. When the through hole is in the open state When the through hole is closed, the upper end of the needle below the through hole can pass through the orifice plate. When the through hole is closed, the upper end of the needle below the through hole cannot pass through the orifice plate; the control chip reads Braille and controls the display for the blind to pass the text through The manner in which the needles protrude is displayed; the through-holes on the orifice plate are arranged in a determinant, and whether each needle passes through the through-holes represents whether there are Braille bumps there. 2. A literacy assisting device for the blind according to claim 1, characterized in that it also includes a mechanical arm device, the mechanical arm device includes a Y-axis motor, an X-axis motor and a toggle device, and the Y-axis motor shaft is connected with a Y-axis Worm, the Y-axis worm is provided with a Y-axis worm slider, and an X-axis motor is fixed above the Y-axis worm slider. The motor gear of the X-axis motor meshes with the teeth on the X-axis slider, and the rightmost end of the X-axis slider A toggling device is provided for toggling the switch device, the toggling device is driven by the Y-axis motor and the X-axis motor to make a two-dimensional movement, and the work of the Y-axis motor and the X-axis motor is controlled by the control chip . 3. A literacy assisting device for the blind according to claim 2, characterized in that the switch device includes a limit slot and a sliding block that can slide in the limit slot, when the slide block slides toward the center of the through hole , to block the through hole, the switch device is closed; when the sliding block slides away from the center of the through hole, the switch device is opened; the movement of the sliding block is generated by the toggle device. 4. A literacy aid for the blind according to claim 3, characterized in that the width of both ends of the sliding block in its sliding direction is greater than the width of the limiting groove, so as to ensure that the sliding block will not completely slide out of the limiting groove and falling off; the rows in the determinant arrangement are perpendicular to the sliding direction of the slider. 5. A literacy aid for the blind according to claim 2, wherein the lower end of the needle is mounted on the needle plate through a needle plate spring. 6. A literacy assisting device for the blind according to claim 2, characterized in that the toggle device can toggle any sliding block driven by the X-axis motor and the Y-axis motor, when the toggle device is located When between two rows of through holes, the through holes that need to be opened in one row of through holes can be opened, and the through holes that need to be closed in the other row of through holes can be closed at the same time. 7. A literacy aid for the blind according to claim 2, wherein the toggle device comprises a motor, a worm, a slider and a toggle lever, the motor shaft is fixedly connected with a worm, and the worm is provided with a slider, The slider is fixedly connected to the toggle rod, and the motor of the toggle device is controlled by the control chip. When the motor rotates forward and reverse, the slider and the toggle rod are driven by the worm to move axially. At the beginning, the slider is in the position of the worm In the middle position, under the drive of the motor, the slider can move along the axial direction of the worm, and the end of the toggle rod can move the slider of the switch device on the orifice plate to realize the opening and closing action of the through hole on the orifice plate. 8. A kind of literacy auxiliary device for the blind according to claim 1, it is characterized in that also comprising SD card, intelligent voice sounding module, determinant keyboard, described SD card, intelligent voice sounding module, determinant keyboard are connected with control chip respectively Electrically connected; the SD card is used to store Braille data in advance, the intelligent voice sounding module is used to announce the pronunciation of the text, and plays the auxiliary function of synchronous prompting, and the determinant keyboard is used to provide repeated sounding and page turning operations.

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