Infrared touch panel and electronic equipment
By driving the infrared scanning device to rotate through a power unit, the problem of excessive number of infrared lamps in infrared touch devices is solved, achieving higher touch accuracy and a wider coverage area.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HONGHE INNOVATION INFORMATION TECH CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-01
AI Technical Summary
In existing infrared touch devices, the number of infrared lights required is too high, resulting in complex circuits, high precision requirements, and the existence of touch blind spots.
A power unit is used to drive the infrared scanning device to rotate. A single infrared scanning device can cover a large touch area, reducing the number of infrared lights, and the touch position is calculated using the time difference.
The number of infrared lights and electronic components has been reduced, simplifying the lighting sequence and signal timing requirements, and improving touch accuracy and coverage.
Smart Images
Figure CN224190486U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of touch panel technology, and in particular to infrared touch panels and electronic devices. Background Technology
[0002] Currently, existing infrared touch devices typically use scanning infrared lamp matrices. After the transmitting lamps are lit sequentially, the touch point position is analyzed by receiving the infrared light intensity information obtained from the lamp matrix.
[0003] However, the accuracy of a scanning infrared lamp matrix is related to the number of infrared lamps. The higher the accuracy requirement, the more infrared lamps are needed and the more complex the circuitry becomes. Utility Model Content
[0004] The purpose of this application is to provide an infrared touch panel and electronic device, which aims to solve the problem of excessive demand for infrared lamps in traditional infrared touch devices.
[0005] A first aspect of this application provides an infrared touch panel, including: a touch area and a non-touch area; the non-touch area includes at least one infrared scanning device, which is used to emit infrared light toward the touch area and determine the touch position based on the received reflected infrared light; the non-touch area further includes at least one power device, at least one of the infrared scanning devices is mounted on the power device, and the power device is used to control the infrared light emission direction of the infrared scanning device to rotate along a direction parallel to the touch area.
[0006] In one embodiment, the infrared touch panel includes two infrared scanning devices arranged diagonally.
[0007] In one embodiment, the power unit includes a motor and a transmission structure; the drive shaft of the motor is connected to the transmission structure, the transmission structure is connected to the corresponding infrared scanning device, and the motor is used to drive the transmission structure to drive the infrared scanning device to rotate.
[0008] In one embodiment, the power unit further includes a control module, a first limit switch, and a second limit switch; the control module is connected to the motor, the first limit switch, and the second limit switch respectively; the first limit switch is triggered when the infrared scanning device rotates from a first angle to a second angle, and the second limit switch is triggered when the infrared scanning device rotates from the second angle to the first angle; the control module is used to drive the motor and to control the rotation direction of the motor to reverse when the first limit switch or the second limit switch is triggered.
[0009] In one embodiment, the infrared scanning device includes an infrared transmitter and an infrared receiver, wherein the infrared transmitter is used to emit infrared light and the infrared receiver is used to receive reflected infrared light.
[0010] In one embodiment, the control module is also connected to the infrared transmitter and the infrared receiver. The control module is used to control the infrared transmitter to periodically emit infrared light and to obtain the time difference between each time the infrared light is emitted by the infrared transmitter and the reflected infrared light received by the infrared receiver.
[0011] In one embodiment, the non-touch area further includes a border surrounding the touch area, and the infrared scanning device is disposed in the border.
[0012] In one embodiment, the touch area is rectangular, and the infrared touch panel includes four infrared scanning devices, which are respectively located at the four corners of the frame.
[0013] In one embodiment, at least one of the infrared scanning devices is disposed on one side of the frame.
[0014] A second aspect of this application provides an electronic device including an infrared touch panel as described above.
[0015] The beneficial effects of this application embodiment compared with the prior art are: by driving the infrared scanning device to rotate through the power device, a single infrared scanning device can cover a larger touch area, thereby reducing the number of infrared lamps and corresponding electronic components, and also reducing the requirements for the lighting sequence of the infrared lamps. Attached Figure Description
[0016] To more clearly illustrate the technical features of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of an infrared touch panel provided in one embodiment of this application;
[0018] Figure 2 This is another structural schematic diagram of an infrared touch panel provided in one embodiment of this application;
[0019] Figure 3 This is a connection diagram of a control module provided in an embodiment of this application;
[0020] Figure 4This is another structural schematic diagram of an infrared touch panel provided in an embodiment of this application;
[0021] Figure 5 This is another structural schematic diagram of an infrared touch panel provided in an embodiment of this application;
[0022] Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.
[0023] Explanation of reference numerals in the attached drawings: 10, Infrared touch panel; 20, Electronic device; 100, Touch area; 200, Non-touch area; 300, Infrared scanning device; 310, Infrared transmitter; 320, Infrared receiver; 400, Power unit; 410, Motor; 420, Transmission structure; 500, Control module; 600, Frame. Detailed Implementation
[0024] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort should all fall within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0026] In the description of this application, it should be understood that the numbering itself, such as "first", "second", etc., is only used to distinguish the described objects and has no sequential or technical meaning, and should not be construed as specifying or implying the importance of the described objects.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] In the description of this application, the term "multiple" refers to two or more. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0029] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0030] For infrared touch devices using scanning infrared lamp matrices, it is typically necessary to control each infrared lamp to emit infrared light sequentially in a certain order, placing specific requirements on the lamp lighting sequence and signal reception timing. The more infrared lamps used in a scanning infrared lamp matrix, the higher the touch recognition accuracy of the infrared touch device; however, this also requires more electronic components, more complex wiring, and stricter requirements on the lamp lighting sequence and signal reception timing. Furthermore, because the positions of the infrared lamps are fixed, certain touch blind spots will always exist.
[0031] Figure 1 The diagram shown is a structural schematic of a preferred embodiment of the infrared touch panel provided in this application.
[0032] An infrared touch panel 10 includes: a touch area 100 and a non-touch area 200.
[0033] The non-touch area 200 includes at least one infrared scanning device 300, which is used to emit infrared light to the touch area 100 and determine the touch position based on the received reflected infrared light.
[0034] The non-touch area 200 also includes at least one power unit 400, and at least one infrared scanning device 300 is mounted on the power unit 400. The power unit 400 is used to control the infrared light emission direction of the infrared scanning device 300 to rotate in a direction parallel to the touch area 100.
[0035] It is understandable that each time the infrared scanning device 300 emits infrared light, it performs a touch detection in the direction of emission. During the rotation of the infrared scanning device 300, the infrared scanning device 300 periodically emits infrared light at a certain frequency, so that a touch detection is performed every time the infrared scanning device 300 rotates a certain angle. By reasonably configuring the rotation speed of the infrared scanning device 300 and the infrared light emission frequency of the infrared scanning device 300, touch detection of the entire touch area 100 can be approximately achieved.
[0036] By rotating the infrared scanning device 300 driven by the power unit 400, a single infrared scanning device 300 can cover a large area of the touch area 100, thereby reducing the number of infrared lamps and corresponding electronic components. Simultaneously, each infrared scanning device 300 only needs to detect the reflected portion of its emitted infrared light, reducing the requirements for the lighting sequence of infrared lamps and the timing of signal reception. The distance between the touch position and the infrared scanning device 300 can be determined simply by comparing the time difference between the emission and reception times of the infrared scanning device 300 and performing a simple calculation based on the speed of light. Further determining the rotation angle of the infrared scanning device 300 allows for precise positioning of the touch position.
[0037] In some embodiments, multiple infrared scanning devices 300 may be installed on a power unit 400. The number of infrared scanning devices 300 can be set according to actual needs. By increasing the number of infrared scanning devices 300, a larger area of the touch area 100 can be touched in a single touch detection, thereby improving the overall detection efficiency of the infrared touch panel 10.
[0038] In some embodiments, one or more infrared scanning devices 300 may be individually set in the non-touch area 200 according to the actual situation, so as to focus on monitoring a portion of the touch area 100 in the important area and improve the touch detection speed of the touch area 100 in the important area.
[0039] In one embodiment, such as Figure 2 As shown, the infrared touch panel 10 includes two infrared scanning devices 300, which are arranged diagonally.
[0040] Understandably, by comparing and verifying the two infrared scanning devices 300, a more accurate touch position can be obtained. At the same time, since the touch area 100 that a single infrared scanning device 300 can scan is fan-shaped, setting the two infrared scanning devices 300 diagonally can also cover each other's detection blind spots, increasing the detection range.
[0041] In one embodiment, such as Figure 3As shown, the power unit 400 includes a motor 410 and a transmission structure 420.
[0042] The drive shaft of the motor 410 is connected to the transmission structure 420, and the transmission structure 420 is connected to the corresponding infrared scanning device 300. The motor 410 is used to drive the transmission structure 420 to drive the infrared scanning device 300 to rotate.
[0043] Specifically, the transmission structure 420 may include several meshing gear structures and a fixed disk. The infrared scanning device 300 may be mounted on the fixed disk. The drive shaft of the motor 410 drives the fixed disk to rotate through the gear structure, thereby causing the infrared scanning device 300 to rotate.
[0044] The installation positions of the motor 410 and the infrared scanning device 300 can be flexibly selected through the transmission structure 420 to adapt to actual needs.
[0045] Understandably, the motor 410 can control the infrared scanning device 300 to rotate back and forth by rotating it in both forward and reverse directions.
[0046] In one embodiment, such as Figure 3 As shown, the power unit 400 also includes a control module 500, a first limit switch, and a second limit switch. The control module 500 is connected to the motor 410, the first limit switch, and the second limit switch. The first limit switch is triggered when the infrared scanning device 300 rotates from a first angle to a second angle, and the second limit switch is triggered when the infrared scanning device 300 rotates from the second angle to the first angle. The control module 500 drives the motor 410 and controls the rotation direction of the motor 410 to reverse when either the first or second limit switch is triggered.
[0047] Specifically, the control module 500 can be a controller such as a chip or a microcontroller. The first angle and the second angle are the rotation angles of the infrared scanning device 300.
[0048] With the positions of the first limit switch and the second limit switch fixed, the control module 500 can obtain the rotation status of the infrared scanning device 300 through the first limit switch and the second limit switch. Then, when the first limit switch or the second limit switch is triggered, the control module 500 controls the rotation direction of the motor 410 to reverse, causing the infrared scanning device 300 to rotate back and forth between the first angle and the second angle, thereby realizing touch detection of the touch area 100 in the fan-shaped area between the first angle and the second angle.
[0049] For example, the control module 500 can control the motor 410 to rotate forward, thereby controlling the infrared scanning device 300 to rotate from the first angle to the second angle through the transmission structure 420, until the infrared scanning device 300 rotates to the second angle and triggers the first limit switch. When the control module 500 detects that the first limit switch has been triggered, the control module 500 can control the motor 410 to rotate in reverse, thereby controlling the infrared scanning device 300 to rotate from the second angle to the first angle through the transmission structure 420, until the infrared scanning device 300 rotates to the first angle and triggers the second limit switch. When the control module 500 detects that the second limit switch has been triggered, the control module 500 can control the motor 410 to rotate forward.
[0050] It is understandable that when the positions of the various infrared scanning devices 300 are different, the first angle and the second angle corresponding to each infrared scanning device 300 will also be different. The first angle and the second angle can be set according to the requirements of the scanning range of the infrared scanning device 300.
[0051] For example, when the infrared scanning device 300 is positioned at the corner of the rectangular touch area 100, the angle difference between the first angle and the second angle can be 90°, thereby covering the entire touch area 100.
[0052] In one embodiment, such as Figure 3 As shown, the infrared scanning device 300 includes an infrared transmitter 310 and an infrared receiver 320. The infrared transmitter 310 is used to emit infrared light, and the infrared receiver 320 is used to receive the reflected infrared light.
[0053] It is understandable that each infrared scanning device 300 can operate independently without the need for cooperation from the infrared transmitter 310 or infrared receiver 320 of other infrared scanning devices 300, thus enabling the detection of touch positions.
[0054] In one embodiment, the control module 500 is also connected to the infrared transmitter 310 and the infrared receiver 320. The control module 500 is used to control the infrared transmitter 310 to periodically emit infrared light and to obtain the time difference between each time the infrared transmitter 310 emits infrared light and the reflected infrared light received by the infrared receiver 320.
[0055] By subtracting the time it takes for the infrared transmitter 310 to emit infrared light from the time it takes for the infrared receiver 320 to receive the reflected infrared light, the distance between the position where the reflection occurs and the infrared transmitter 310 can be calculated based on the speed of light.
[0056] In the initial state before any operation is performed on the infrared touch screen, the infrared transmitter 310 can scan the scanning range to obtain reference data. Subsequently, as the infrared transmitter 310 continuously transmits and receives infrared light to obtain real-time data, the presence of touch operation can be determined by comparing the real-time data with the reference data. When there is a difference between the real-time data and the reference data, the distance between the touch position and the infrared scanning device 300 can be determined based on the real-time data.
[0057] In some embodiments, before any operation is performed on the infrared touchscreen, the infrared transmitter 310 can be rotated from a first angle to a second angle to complete a scan of the scanning area and obtain the first scan data. Then, the infrared transmitter 310 can be rotated from the second angle to the first angle to complete a scan of the scanning area and obtain the second scan data. The first scan data can be verified using the second scan data to obtain the reference data.
[0058] In one embodiment, such as Figure 4 As shown, the non-touch area 200 also includes a border 600 surrounding the touch area 100, and the infrared scanning device 300 is disposed in the border 600.
[0059] The shape of the bezel 600 corresponds to the shape of the touch area 100. The bezel 600 can be used to place related electronic components and wiring of the infrared touch panel 10.
[0060] In some embodiments, the motor 410, the transmission structure 420, and the control module 500 can all be disposed in the frame 600.
[0061] In one embodiment, such as Figure 4 As shown, the touch area 100 is rectangular, and the infrared touch panel 10 includes four infrared scanning devices 300, which are respectively located at the four corners of the frame 600.
[0062] Understandably, by comparing and verifying the data with four infrared scanning devices 300, a more accurate touch location can be obtained. Furthermore, since a single infrared scanning device 300 can scan a fan-shaped touch area 100, arranging the four infrared scanning devices 300 diagonally allows them to cover each other's blind spots, increasing the detection range.
[0063] In one embodiment, such as Figure 5 As shown, at least one infrared scanning device 300 is disposed on one of the edges of the frame 600.
[0064] The infrared scanning device 300 on the frame 600 can further enhance the positioning of the touch position, and further supplement the four infrared scanning devices 300 located at the corner.
[0065] Figure 6 The diagram shown is a structural schematic of a preferred embodiment of the electronic device provided in this application.
[0066] An electronic device 20 includes an infrared touch panel 10 as described in any of the above embodiments.
[0067] Since the electronic device 20 includes the infrared touch panel 10 of any of the above embodiments, the electronic device 20 has the beneficial effects of the infrared touch panel 10 of any of the above embodiments, which will not be repeated here.
[0068] Specifically, the electronic device 20 may be a touch screen display.
[0069] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. It should be noted that, for those skilled in the art, several equivalent obvious modifications and / or equivalent substitutions can be made without departing from the technical principles of this application, and these obvious modifications and / or equivalent substitutions should also be considered within the scope of protection of this application.
Claims
1. An infrared touch panel, characterized by, include: Touch area and non-touch area; The non-touch area includes at least one infrared scanning device, which is used to emit infrared light into the touch area and determine the touch position based on the received reflected infrared light. The non-touch area also includes at least one power unit, and at least one of the infrared scanning devices is mounted on the power unit. The power unit is used to control the infrared light emission direction of the infrared scanning device to rotate in a direction parallel to the touch area.
2. The infrared touch panel according to claim 1, wherein, The infrared touch panel includes two infrared scanning devices, which are arranged diagonally.
3. The infrared touch panel according to claim 1 or 2, wherein, The power unit includes a motor and a transmission structure; The drive shaft of the motor is connected to the transmission structure, and the transmission structure is connected to the corresponding infrared scanning device. The motor is used to drive the transmission structure to rotate the infrared scanning device.
4. The infrared touch panel according to claim 3, characterized in that, The infrared touch panel also includes a control module, a first limit switch, and a second limit switch; The control module is connected to the motor, the first limit switch and the second limit switch respectively. The first limit switch is triggered when the infrared scanning device rotates from the first angle to the second angle, and the second limit switch is triggered when the infrared scanning device rotates from the second angle to the first angle. The control module is used to drive the motor and to control the rotation direction of the motor to reverse when the first limit switch or the second limit switch is triggered.
5. The infrared touch panel according to claim 4, characterized in that, The infrared scanning device includes an infrared transmitter and an infrared receiver. The infrared transmitter is used to emit infrared light, and the infrared receiver is used to receive the reflected infrared light.
6. The infrared touch panel according to claim 5, characterized in that, The control module is also connected to the infrared transmitter and the infrared receiver. The control module is used to control the infrared transmitter to periodically emit infrared light and to obtain the time difference between each time the infrared light is emitted by the infrared transmitter and the reflected infrared light received by the infrared receiver.
7. The infrared touch panel according to claim 1, characterized in that, The non-touch area also includes a border surrounding the touch area, and the infrared scanning device is disposed in the border.
8. The infrared touch panel according to claim 7, characterized in that, The touch area is rectangular, and the infrared touch panel includes four infrared scanning devices, which are respectively located at the four corners of the frame.
9. The infrared touch panel according to claim 7, characterized in that, At least one of the infrared scanning devices is disposed on one side of the frame.
10. An electronic device, characterized in that, Including the infrared touch panel as described in any one of claims 1 to 9.