Low-cost multi-row dot matrix touch display and control method

Abstract

The invention provides a low-cost multi-row dot matrix tactile display and a control method, and belongs to the technical field of tactile display. The tactile display comprises a tactile display module, a thimble module, an interaction module and a control module, the control module is used for determining a target contact based on to-be-displayed content sent by external content sending equipment; the tactile display module comprises a dot matrix panel and is used for displaying point needle content corresponding to content to be displayed when a tactile point needle is in a convex tactile state; the ejector pin module comprises a movable ejector pin and a driving assembly, and is used for driving the movable ejector pin through the driving assembly to enable a touch point pin at a target touch point position to be in a convex tactile perception state or a non-convex state in a lifting manner; and the interaction module is used for collecting real-time position information and gesture action information of the hands of the user and carrying out corresponding interaction on the touch display and the display content. By adopting the touch display, the production cost can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tactile display, and in particular to a low-cost multi-row dot matrix tactile display and a control method. Background Art

[0002] For visually impaired users (low vision and blind people), they cannot read books and newspapers visually and obtain various information due to impaired vision. In addition to voice output, Braille is an indispensable way of communication for them. Although traditional Braille on paper materials is low-cost, heavy Braille books are not convenient to carry and quickly consult. At the end of the 20th century, with the development of electronic technology, electronic Braille displays were born, which can display Braille through corresponding control programs. However, these single-line electronic Braille displays can usually only display one Braille unit line and cannot display image and graphic information, such as pictures, maps, geometric figures, etc.

[0003] In recent years, with the continuous development of various new materials and microelectronics technology, multi-line dot matrix tactile displays have emerged, including electromagnetic, piezoelectric ceramic and new polymer materials. However, the current multi-line dot matrix displays are expensive, and most low-income visually impaired users cannot afford them at all. Therefore, how to develop a low-cost multi-line dot matrix tactile display has always been the research focus of industry and academia.

[0004] As disclosed in the invention patent "Dot Matrix Magnetically Controlled Refresh Tactile Display" with application number 201510366696.4, tactile displays mostly use piezoelectric ceramic drivers to control each contact individually, that is, the drive unit corresponds to the dot matrix unit one by one. When displaying tactile images, multiple contacts can be raised and lowered at the same time for efficient control. Along with this comes the high cost of a single device. For example, a graphic display of a foreign company costs nearly 40,000 euros, or about 300,000 yuan. Other tactile display devices, such as small Braille dot displays, although the cost is relatively low and the price can be reduced to 10,000 to 20,000 yuan, can only display a single row of Braille and cannot present graphic image information. To display multiple lines of Braille or tactile graphic images, a larger format tactile dot matrix is ​​required.

[0005] The above problems need to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem of high price of tactile displays in the prior art and to provide a low-cost multi-row dot matrix tactile display and a control method.

[0007] In a first aspect, the present invention provides a low-cost multi-row dot matrix tactile display, the tactile display comprising: a tactile display module, a pin module, an interaction module and a control module, the tactile display module is located on the upper layer of the pin module, the interaction module is attached to the tactile display module, the input end of the control module is connected to the interaction module and an external content sending device, and the output end of the control module is respectively connected to the tactile display module and the pin module; the control module is used to determine the target touch point based on the content to be displayed sent by the external image sending device; the tactile display module comprises a dot matrix panel, the dot matrix panel comprises a plurality of liftable tactile pins and self-releasing touch points respectively placed on the plurality of liftable tactile pins The self-locking mechanical structure is used to lock the liftable tactile pin in a locked state or an unlocked state based on the control instruction sent by the control module; the ejector pin module includes a movable ejector pin and a driving component, one end of the movable ejector pin is connected to the driving component, and the other end is in physical contact with the tactile pin by lifting, and is used to drive the movable ejector pin to lift and lower the tactile pin at the target contact point position; the interaction module is used to collect the real-time position information and gesture action information of the user's hand, and perform corresponding interactions with the tactile display and the displayed content, including single-click, double-click, translation and / or zoom.

[0008] Furthermore, the self-unlocking mechanical structure is used to put the liftable tactile point needle in a locked state or an unlocked state, including: when the movable ejector pin rises to a preset length and presses the tactile point needle, the tactile point needle maintains a corresponding state, including: when the movable ejector pin rises to a preset length and presses the tactile point needle, the tactile point needle is in a locked state, and when the movable ejector pin rises to the preset length again and presses the same tactile point needle, the tactile point needle is in an unlocked state.

[0009] Furthermore, the control module is also used to control the ejector module based on the determined target contact, so that the driving component controls the movable ejector to move in sequence to the bottom of the liftable tactile point needle corresponding to the target contact, and drives the movable ejector to rise a preset length so that the liftable tactile point needle corresponding to the target contact is in a raised tactile state, and the tactile point needle in the raised tactile state is locked through the self-unlocking mechanical structure.

[0010] Furthermore, the control module is also used to: S1, in response to the liftable tactile point needle being in a locked state, send a control instruction to the driving component to control the movable ejector needle to descend to an initial state;

[0011] S2, in response to the movable ejector pin descending to the initial state, sending a control instruction to the driving component to control the movable ejector pin to move to the bottom of the next liftable tactile point pin, and drive the movable ejector pin to rise by a preset length; S3, looping the above steps S1-S2 until all the liftable tactile point pins corresponding to the target contacts are completely lifted.

[0012] Furthermore, the control module is also used to: after the step S3, it also includes: when the next content to be displayed is received, control the movable ejector pin to move to the bottom of the tactile point pin in the raised and tactile state in sequence, and press the tactile point pin to make the tactile point pin in the raised and tactile state in an unlocked state, and make the tactile point pin in the raised and tactile state in a non-raised and non-tactile state.

[0013] Furthermore, the driving assembly includes a base, a first motor, a first conveying assembly, a second motor, a second conveying assembly, a third motor and a third conveying assembly, the first motor is connected to the first conveying assembly and fixed on the base, the first motor is used to drive the first conveying assembly to drive the movable ejector to move in the y-axis direction, the second motor is connected to the second conveying assembly, the second motor is used to drive the second conveying assembly to drive the movable ejector to move in the x-axis direction, the third motor is connected to the third conveying assembly, the third motor is used to drive the third conveying assembly to drive the movable ejector to perform lifting and lowering movements in the vertical direction.

[0014] Furthermore, the control module is electrically connected to the first motor and the second motor respectively, and is used to control the movable ejector pin to move to the bottom of the liftable tactile point pin corresponding to the target contact in sequence based on the determined target contact point. The control module is electrically connected to the third motor, and is used to control the movable ejector pin to rise to a preset length.

[0015] Furthermore, the ejector pin module includes a plurality of movable ejectors and a driving assembly, wherein one end of the plurality of movable ejectors is respectively connected to the driving assembly, and the other end is respectively in physical contact with the tactile point needles by lifting and lowering, and is used for driving the plurality of movable ejectors to be driven by the driving assembly to lift and lower so that at least one tactile point needle is in a raised state or in an initial position.

[0016] Furthermore, the interaction module is equipped with an infrared touch device, an ultrasonic touch device or a visual sensor, which is used to obtain the real-time position information and gesture action information of the user's hand based on infrared touch technology, ultrasonic touch technology or visual processing technology and send it to the control module. The control module generates preset corresponding control instructions to interact with the tactile display and the displayed content accordingly.

[0017] In a second aspect, the present invention provides a low-cost multi-row dot matrix tactile display control method, which is applied to the control module in the above-mentioned low-cost multi-row dot matrix tactile display, and the method comprises: S110: based on the determined target contact point control ejector module, the driving component controls the movable ejector to move to the lower part of the liftable tactile needle corresponding to the target contact point in turn, and drives the movable ejector to rise to a preset length; S120: sending a control instruction to the driving component to control the movable ejector to descend to an initial state; S130: in response to the movable ejector descending to the initial state, state, sending a control instruction to the driving component to control the movable ejector pin to move to the bottom of the next liftable tactile point pin, and drive the movable ejector pin to rise by a preset length; S140: looping the above steps S120-S130 until the liftable tactile point pins corresponding to all target contacts have completed the lifting; S150: after receiving the next content to be displayed, sending a low-level signal to the self-unlocking mechanical structure, so that at least one corresponding liftable tactile point pin is in an unlocked state, and the liftable tactile point pin is lowered to the initial position and is in a non-raised and non-tactile state.

[0018] In a third aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores one or more instructions, wherein the computer instructions are used to enable the computer to execute the above-mentioned low-cost multi-row dot matrix tactile display control method.

[0019] In a fourth aspect, the present invention provides an electronic device comprising: a memory and a processor; the memory stores at least one program instruction; the processor implements the above-mentioned low-cost multi-row dot matrix tactile display control method by loading and executing the at least one program instruction.

[0020] The beneficial effects of the present invention are as follows: the present invention provides a low-cost multi-row dot matrix tactile display and control method, the tactile display includes: a tactile display module, a pin module, an interaction module and a control module, the tactile display module is located on the upper layer of the pin module, the interaction module is attached to the tactile display module, the input end of the control module is connected to the interaction module and the external image sending device, and the output end of the control module is respectively connected to the tactile display module and the pin module. By using a motor to control the pin module, compared with the prior art that uses a piezoelectric ceramic driver, the individual control of each contact point can effectively reduce the production cost. And by setting the interaction module, the visually impaired user can browse the graphic image information by touching with his fingers and perform corresponding gesture interaction, which greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the internal module structure of a low-cost multi-row dot matrix tactile display provided by Example 1 of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of a low-cost multi-row dot matrix tactile display provided by Example 1 of the present invention.

[0024] Figure 3 This is a schematic diagram of the overall structure of another low-cost multi-row dot matrix tactile display provided by Example 1 of the present invention.

[0025] Figure 4 This is a flow chart of a low-cost multi-row dot matrix tactile display control method provided in Example 2 of the present invention.

[0026] Figure 5 This is a partial block diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0027] It should be mentioned before discussing the exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations as sequential processes, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0028] It should be understood that, although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another unit. For example, without departing from the scope of the exemplary embodiments, the first unit may be referred to as the second unit, and similarly the second unit may be referred to as the first unit. The term "and / or" used herein includes any and all combinations of one or more of the listed associated items.

[0029] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0030] Example 1

[0031] like Figure 1-3 , which is a schematic structural diagram of a low-cost multi-row dot matrix tactile display provided by an embodiment of the present invention.

[0032] As an example, the tactile display includes: a tactile display module 1, a pin module 2, an interaction module 3 and a control module 4, wherein the tactile display module 1 is located on the upper layer of the pin module 2, the interaction module 3 is attached to the tactile display module 1, the input end of the control module 4 is connected to the interaction module 3 and the external display content sending device 5, and the output end of the control module 4 is respectively connected to the tactile display module 1 and the pin module 2; the control module 4 is used to determine the target touch point based on the content to be displayed sent by the external image sending device 5; the tactile display module 1 includes a dot matrix panel 1-1, and the dot matrix panel 1-1 includes a plurality of liftable tactile pins 1-1-1 and self-unlocking mechanical structures (not shown in the figure) respectively placed on the plurality of liftable tactile pins. ), the self-unlocking mechanical structure is used to put the liftable tactile pin 1-1-1 in a locked state or an unlocked state; the ejector pin module 2 includes a movable ejector pin 2-1 and a driving component 2-2, one end of the movable ejector pin 2-1 is connected to the driving component 2-2, and the other end is in physical contact with the tactile pin 1-1-1 by lifting, and is used to drive the movable ejector pin 2-1 through the driving component 2-2 to lift and lower the tactile pin 1-1-1 at the target contact point position; the interactive module 3 is used to collect the real-time position information and gesture action information of the user's hand, and to interact with the tactile display and the displayed content accordingly, including single-click, double-click, translation and / or zoom.

[0033] Preferably, the self-unlocking mechanical structure is used to make the liftable tactile point needle 1-1-1 in a locked state or an unlocked state, including: when the movable ejector pin 2-1 rises to a preset length and presses the tactile point needle 1-1-1, the tactile point needle 1-1-1 maintains a corresponding state, including: when the movable ejector pin 2-1 rises to a preset length and presses the tactile point needle 1-1-1, the tactile point needle 1-1-1 is in a locked state, and when the movable ejector pin 2-1 rises to a preset length again and presses the same tactile point needle 1-1-1, the tactile point needle 1-1-1 is in an unlocked state. The self-unlocking mechanical structure can be set as an automatic telescopic locking mechanism of a ballpoint pen.

[0034] Preferably, the control module 4 is also used to control the ejector module 2 based on the determined target contact, so that the drive component 2-2 controls the movable ejector 2-1 to move to the lower part of the liftable tactile pin 1-1-1 corresponding to the target contact in sequence, and drives the movable ejector 2-1 to rise to a preset length so that the liftable tactile pin 1-1-1 corresponding to the target contact is in a raised tactile state, and the tactile pin in the raised tactile state is locked through a self-unlocking mechanical structure. That is, the height of each liftable tactile pin 1-1-1 can be different through different preset lengths, wherein the liftable tactile pin 1-1-1 can be a telescopic rod structure.

[0035] Preferably, the control module 4 is further used for: S1, in response to the liftable tactile point needle being in a locked state, sending a control instruction to the driving component to control the movable ejector needle to descend to an initial state;

[0036] S2. In response to the movable ejector pin descending to the initial state, a control instruction is sent to the driving component to control the movable ejector pin to move to the bottom of the next liftable tactile pin, and drive the movable ejector pin to rise by a preset length; S3. The above steps S1-S2 are repeated until all liftable tactile pins corresponding to the target contacts have completed the rise. Specifically, in the process of displaying the content to be displayed on the tactile display, when it is detected that the movable ejector pin has risen by a preset length, it proves that the liftable tactile pin 1-1-1 corresponding to one of the target contacts has completed the raised action and is in a raised tactile state. Therefore, based on the locking and unlocking principle of the self-unlocking mechanical structure, it is in a locked state to prevent the liftable tactile pin 1-1-1 that has completed the raised action from falling due to its own weight and other reasons, which may reduce the subsequent tactile display effect. When it is detected that the liftable tactile point needle 1-1-1 corresponding to one of the target contacts is in a locked state, the movable ejector needle needs to be lowered to the initial state to facilitate the lifting action of the liftable tactile point needle 1-1-1 corresponding to the next contact of the target contacts. It can be understood that there is no restriction on the preset length of the movable ejector needle lifting, that is, the same preset length can be set to make the liftable tactile point needle lifted by the movable ejector needle at the same raised height, and different preset lengths can be set to make the liftable tactile point needle lifted by the movable ejector needle at different raised heights, such as displayed in relief.

[0037] Preferably, in step S3, after looping the above steps S1-S2 until all the tactile pins corresponding to the target contacts are lifted, it further includes: after receiving the next content to be displayed, controlling the movable ejector pin 2-1 to move to the bottom of the tactile pin in the raised tactile state in sequence, and pressing the tactile pin to make the tactile pin in the raised tactile state in an unlocked state, and making the tactile pin in the raised tactile state in a non-raised non-tactile state. Specifically, after the control module 4 receives the next content to be displayed, a control signal can be sent to the driving component 2-2 in the ejector module to control the movable ejector pin 2-1 to move to the bottom of the tactile pin 1-1-1 in the raised tactile state in sequence, and the movable ejector pin 2-1 is raised to a preset length so that the corresponding tactile pin 1-1-1 is in an unlocked state, and the tactile pin 1-1-1 is lowered to the initial position and is in a non-raised tactile state. Alternatively, after the user has "watched" the current graphic, the interactive module 3 may send a gesture command to the control module 4, so that the control module 4 sends a control signal to the drive component based on the corresponding command preset with the gesture, so that the corresponding liftable tactile point needle 1-1-1 is in an unlocked state, and the liftable tactile point needle 1-1-1 is lowered to the initial position. Alternatively, after the user has "watched" the current graphic, the interactive module 3 may send a gesture command to the control module 4, so that the control module 4 sends a control signal to the drive component 2-1, so that the corresponding liftable tactile point needle 1-1-1 is in an unlocked state, and the liftable tactile point needle 1-1-1 is lowered to the initial position. Alternatively, by means of a mechanical button, after the user has "watched" the current graphic, the interactive module 3 may send a gesture command to the control module 4, so that the control module 4 sends a control signal to the drive component 2-1, so that the corresponding liftable tactile point needle 1-1-1 is in an unlocked state, and the liftable tactile point needle 1-1-1 is lowered to the initial position.

[0038] Preferably, the driving assembly 2-2 includes a base, a first motor, a first transmission assembly, a second motor, a second transmission assembly, a third motor and a third transmission assembly, the first motor is connected to the first transmission assembly and fixed on the base, the first motor is used to drive the first transmission assembly to drive the movable ejector to move in the y-axis direction, the second motor is connected to the second transmission assembly, the second motor is used to drive the second transmission assembly to drive the movable ejector to move in the x-axis direction, the third motor is connected to the third transmission assembly, the third motor is used to drive the third transmission assembly to drive the movable ejector to move up and down in the vertical direction. Specifically, the control module 4 is electrically connected to the first motor and the second motor respectively, and is used to control the movable ejector 2-1 to move to the lower part of the liftable tactile point needle 1-1-1 corresponding to the target contact in sequence based on the determined target contact, and the control module 4 is electrically connected to the third motor, and is used to control the movable ejector 2-1 to rise to a preset length. That is, the first motor is used to control the movement of the movable ejector 2-1 in the y-axis direction, the second motor is used to control the movement of the movable ejector 2-1 in the x-axis direction, and the third motor is used to control the movement of the movable ejector 2-1 in the z-axis direction. That is, the drive assembly 2-2 described in this embodiment only needs three motors for electrical control. Compared with the prior art that requires different electric ceramic drivers for different contacts, the production cost can be greatly reduced.

[0039] Preferably, the ejector module 3 includes a plurality of movable ejectors 2-1 and a driving assembly 2-2, one end of the plurality of movable ejectors 2-1 is respectively connected to the driving assembly 2-2, and the other end is respectively in physical contact with the tactile point needle 1-1-1 by lifting, and is used to drive the plurality of movable ejectors 2-1 by the driving assembly 2-2 to lift and lower so that at least one tactile point needle is in a raised state or in an initial position. That is, for multiple ejectors, the control module 4 can control the corresponding single ejector or multiple ejectors to rise faster, so as to improve the update speed of the display.

[0040] Preferably, the interaction module 3 is provided with an infrared touch device or an ultrasonic touch device or a visual sensor, which is used to obtain the real-time position information and gesture information of the user's hand based on infrared touch technology or ultrasonic touch technology or visual processing technology and send it to the control module, and the control module 4 generates a preset control instruction corresponding thereto to interact with the tactile display and the displayed content accordingly. Among them, the principle of infrared touch technology is: it is composed of infrared emitting and receiving sensing elements installed on the outer frame of the display, and an infrared detection network is formed on the surface of the display. Any touching object can change the infrared on the contact point to realize the touch screen operation. The implementation principle of the infrared touch screen is similar to that of the surface acoustic wave touch, which uses infrared emitting and receiving sensing elements. These elements form an infrared detection network on the surface of the screen, and the object of the touch operation (such as a finger) can change the infrared of the contact point, which is then converted into the coordinate position of the touch to realize the response of the operation. On the infrared touch screen, the circuit board device arranged on the four sides of the screen has an infrared emitting tube and an infrared receiving tube, corresponding to the formation of a horizontally and vertically crossed infrared matrix.

[0041] Preferably, Figure 3 As shown, the tactile display module 1 may also be located at the lower layer of the ejector module 2 .

[0042] Preferably, through statistics obtained during the actual production process, the production cost of the tactile display can be controlled within 30,000. Obviously, compared with the existing tactile displays, this reduces the production cost while also ensuring that it can display multiple lines, that is, it can display not only text information, but also image information, etc.

[0043] In the above embodiment, the ejector module is controlled by a motor, which can effectively reduce the production cost compared with the prior art that uses a piezoelectric ceramic driver to control each contact point individually. In addition, by setting an interactive module, visually impaired users can browse graphic image information by touching with their fingers and perform corresponding gesture interactions, which greatly improves the user experience.

[0044] Example 2

[0045] like Figure 4 As shown, it is a flow chart of a low-cost multi-row dot matrix tactile display control method provided by the present application.

[0046] As an example, the method includes:

[0047] S110: Based on the determined target contact point, the ejector pin module is controlled to enable the driving component to control the movable ejector pin to move sequentially to below the liftable tactile point pin corresponding to the target contact point, and drive the movable ejector pin to rise to a preset length.

[0048] S120: Sending a control instruction to the driving component to control the movable ejector to descend to an initial state.

[0049] S130: In response to the movable ejector pin descending to the initial state, a control instruction is sent to the driving component to control the movable ejector pin to move below the next liftable tactile point pin, and drive the movable ejector pin to rise by a preset length.

[0050] S140: The above steps S120-S130 are repeated until all the tactile point needles corresponding to the target touch points are completely lifted.

[0051] S150: After receiving the next content to be displayed, a low-level signal is sent to the self-unlocking mechanical structure to put at least one corresponding liftable tactile point needle in an unlocked state, so that the liftable tactile point needle descends to an initial position in a non-raised and non-tactile state.

[0052] It is not difficult to find that this embodiment is a method embodiment corresponding to the first embodiment, and this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[0053] Example 3

[0054] The embodiment of the present invention further provides a storage medium, on which a low-cost multi-row dot matrix tactile display control method is stored, and when the low-cost multi-row dot matrix tactile display control program is executed by a processor, the steps of the low-cost multi-row dot matrix tactile display control method described above are implemented. Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0055] Example 4

[0056] See also Figure 5 An embodiment of the present invention further provides an electronic device, comprising: a memory and a processor; the memory stores at least one program instruction; the processor implements the low-cost multi-row dot matrix tactile display control method provided in Example 2 by loading and executing the at least one program instruction.

[0057] The memory 602 and the processor 601 are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors 601 and the memory 602 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor 601 is transmitted on a wireless medium via an antenna, and further, the antenna also receives data and transmits the data to the processor 601.

[0058] The processor 601 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 602 can be used to store data used by the processor 601 when performing operations.

[0059] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can know all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A low-cost multi-line dot matrix tactile display, characterized in that: The tactile display comprises: a display module, a tactile display module, an ejector module, an interaction module and a control module, wherein the tactile display module is located on the upper layer of the ejector module, the interaction module is attached to the tactile display module, the input end of the control module is connected to the interaction module and the external display content sending device, and the output end of the control module is respectively connected to the tactile display module and the ejector module; The control module is used to determine the target touch point based on the content to be displayed sent by the external image sending device; The tactile display module includes a dot matrix panel, the dot matrix panel includes a plurality of liftable tactile point pins and self-unlocking mechanical structures respectively disposed on the plurality of liftable tactile point pins, the self-unlocking mechanical structures are used to put the liftable tactile point pins in a locked state or an unlocked state; The ejector module comprises a movable ejector and a driving assembly, one end of the movable ejector is connected to the driving assembly, and the other end is in physical contact with the tactile point needle by lifting, and is used to drive the movable ejector to lift the tactile point needle at the target contact point position to be in a raised tactile state or a non-raised non-tactile state through the driving assembly; The interaction module is used to collect real-time position information and gesture information of the user's hand, and perform corresponding interactions with the tactile display and displayed content, including single-click, double-click, translation and / or zoom.

2. The low-cost multi-row dot matrix tactile display according to claim 1, characterized in that: The self-unlocking mechanical structure is used to put the liftable tactile point needle in a locked state or an unlocked state, and includes: When the movable ejector pin rises to a preset length and presses against the tactile point pin, the tactile point pin maintains the corresponding state, including: When the movable ejector pin rises to a preset length and presses the tactile point needle, the tactile point needle is in a locked state. When the movable ejector pin rises to a preset length again and presses the same tactile point needle, the tactile point needle is in an unlocked state.

3. The low-cost multi-row dot matrix tactile display according to claim 2, characterized in that: The control module is also used to control the ejector module based on the determined target contact, so that the driving component controls the movable ejector to move in sequence to the bottom of the liftable tactile point needle corresponding to the target contact, and drives the movable ejector to rise a preset length so that the liftable tactile point needle corresponding to the target contact is in a raised tactile state, and the tactile point needle in the raised tactile state is locked through the self-unlocking mechanical structure.

4. The low-cost multi-row dot matrix tactile display according to claim 3, characterized in that: The control module is also used for: S1, in response to the liftable tactile point needle being in a locked state, sending a control instruction to the driving component to control the movable ejector needle to descend to an initial state; S2, in response to the movable ejector pin descending to the initial state, sending a control instruction to the driving component to control the movable ejector pin to move to the bottom of the next liftable tactile point pin, and driving the movable ejector pin to rise to a preset length; S3, looping the above steps S1-S2 until all the tactile point needles corresponding to the target contacts are completely lifted.

5. The low-cost multi-row dot matrix tactile display according to claim 4, characterized in that: The control module is further used for: after step S3, further comprising: When the next content to be displayed is received, the movable ejector pin is controlled to move to the bottom of the tactile pin in the raised tactile state in sequence, and the tactile pin is pressed to make the tactile pin in the raised tactile state unlocked, and the tactile pin in the raised tactile state is in a non-raised and non-tactile state.

6. The low-cost multi-row dot matrix tactile display according to claim 1, characterized in that: The driving assembly includes a base, a first motor, a first conveying assembly, a second motor, a second conveying assembly, a third motor and a third conveying assembly. The first motor is connected to the first conveying assembly and fixed on the base. The first motor is used to drive the first conveying assembly to drive the movable ejector to move in the y-axis direction. The second motor is connected to the second conveying assembly. The second motor is used to drive the second conveying assembly to drive the movable ejector to move in the x-axis direction. The third motor is connected to the third conveying assembly. The third motor is used to drive the third conveying assembly to drive the movable ejector to move up and down in the vertical direction.

7. The low-cost multi-row dot matrix tactile display according to claim 6, characterized in that: The control module is electrically connected to the first motor and the second motor respectively, and is used to control the movable ejector pin to move in sequence to the bottom of the liftable tactile point pin corresponding to the target contact point based on the determined target contact point. The control module is electrically connected to the third motor and is used to control the movable ejector pin to rise to a preset length.

8. The low-cost multi-row dot matrix tactile display according to claim 1, characterized in that: The ejector pin module includes a plurality of movable ejector pins and a driving assembly, wherein one end of the plurality of movable ejector pins is respectively connected to the driving assembly, and the other end of the plurality of movable ejector pins is respectively in physical contact with the tactile point needles by means of lifting and lowering, and is used for driving the plurality of movable ejector pins by means of lifting and lowering so that at least one tactile point needle is in a raised state or in an initial position.

9. The low-cost multi-row dot matrix tactile display according to claim 1, characterized in that: The interaction module is equipped with an infrared touch device, an ultrasonic touch device or a visual sensor, which is used to obtain the real-time position information and gesture action information of the user's hand based on infrared touch technology, ultrasonic touch technology or visual processing technology and send it to the control module. The control module generates preset corresponding control instructions to interact with the tactile display and the displayed content accordingly.

10. A low-cost multi-row dot matrix tactile display control method, characterized in that: The method is applied to a control module in a low-cost multi-row dot matrix tactile display according to any one of claims 1 to 9, and the method comprises: S110: Based on the determined target contact point, the ejector pin module is controlled to enable the driving component to control the movable ejector pin to move to the lower part of the liftable tactile pin corresponding to the target contact point in sequence, and drive the movable ejector pin to rise to a preset length; S120: sending a control instruction to the driving component so that it controls the movable ejector pin to descend to an initial state; S130: In response to the movable ejector pin descending to the initial state, a control instruction is sent to the driving component to control the movable ejector pin to move below the next liftable tactile point pin, and drive the movable ejector pin to rise by a preset length; S140: looping the above steps S120-S130 until all the tactile point needles corresponding to the target touch points are completely lifted; S150: After receiving the next content to be displayed, a low-level signal is sent to the self-unlocking mechanical structure to put at least one corresponding liftable tactile point needle in an unlocked state, so that the liftable tactile point needle descends to an initial position in a non-raised and non-tactile state.

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