Laser plane multi-touch device

Abstract

The utility model discloses a laser plane multi-touch device, which relates to the field of multi-touch technology for human-computer interaction, including a touch base plate, an image acquisition component, a touch coordinate calculation component and an infrared array laser, and also includes: an adjustment unit and a limit unit arranged between the touch base plate and the touch coordinate calculation component; the adjustment unit includes a carrier, a rectangular box, a transverse screw rod, a rectangular guide block, a rectangular sleeve and a damping shaft. In the utility model, the rectangular guide block threadedly connected to the transverse screw rod can be subjected to force to drive the rectangular sleeve to translate on the rectangular box to adjust the exposed area, the limit unit as a whole can help the image acquisition component and the touch coordinate calculation component to adjust the distance with the touch base plate, the damping shaft rotates to cooperate with the image acquisition component and the touch coordinate calculation component to adjust the placement angle on the rectangular sleeve, and the device has high stability in adjusting the positioning of the image acquisition component and the touch coordinate calculation component.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-point touch control for human-computer interaction, and in particular to a laser plane multi-point touch control device. Background Art

[0002] Touch technology is a technology that controls a computer by directly touching the surface of a display device, allowing users to use fingers or other handheld objects to directly click, drag, zoom in, zoom out, and other operations to complete human-computer interaction. Publication No. CN101566899A discloses a multi-touch signal triggering method based on linear array laser and its system, which generates a layer of laser light curtain parallel to and close to the screen surface above the display screen, which can generate bright spots at the contact points when multiple fingers and stylus pens touch the screen, and convert them into multi-touch input messages that can be understood by the computer; the multi-touch system based on this triggering method is composed of a computer, a projector, an infrared camera, a projection screen, and an infrared linear array laser, and can simultaneously identify and respond to touch actions of multiple contacts. In the above patent, high-power infrared linear array lasers need to be installed at the four corners of the touch frame, power lines need to be laid around the touch frame, and a corresponding laser installation structure is required. There are many installation restrictions for many scenarios, which is very inconvenient.

[0003] The publication number is CN102955618A, which discloses a camera-type optical multi-touch device, including: a touch base, a bracket, an image acquisition device and a touch coordinate calculation device; the touch base is provided with an infrared array laser, the image acquisition device and the touch coordinate calculation device are arranged on the bracket, and are used to obtain the coordinate position of the touch object on the touch base, the touch base is formed with a laser installation groove, the infrared array laser is embedded in the laser installation groove, the infrared light emitted by the infrared array laser is closely attached to the touch plane above the touch base and covers the entire touch area of ​​the touch base; the present invention can realize its installation by only embedding the infrared array laser in the laser installation groove, without installing other related components separately, and all related components can be made in one device, which can be easily installed in various occasions.

[0004] Although the above scheme optimizes the installation structure of the infrared array laser, the image acquisition device and the touch coordinate calculation device are adjusted on the bracket by sliding the distance between the touch base plate, the device lacks positioning for adjusting the image acquisition component and the touch coordinate calculation component, and the image acquisition component and the touch coordinate calculation component are troublesome to disassemble and assemble on the bracket and the touch base plate. Therefore, we propose a laser planar multi-touch device. Utility Model Content

[0005] The main purpose of the present utility model is to provide a laser plane multi-point touch device. By setting an adjustment unit and a limiting unit, it solves the problems of poor positioning stability in the adjustment of the image acquisition component and the touch coordinate calculation component of the device, and the troublesome disassembly and assembly operations of the image acquisition component and the touch coordinate calculation component on the bracket and the touch bottom plate.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions: A laser plane multi-point touch device includes a touch bottom plate, an image acquisition component, a touch coordinate calculation component, and an infrared array laser, and further includes: an adjustment unit and a limiting unit arranged between the touch bottom plate and the touch coordinate calculation component;

[0007] The adjustment unit includes a carrier frame, a rectangular box, a transverse lead screw, a rectangular guide block, a rectangular sleeve, and a damping rotating shaft. The carrier frame is in a "U" shape and is fixedly installed at the center of the top surface of the touch bottom plate. There are two rectangular boxes in total, which are symmetrically and fixedly embedded in the top surface of the carrier frame. The transverse lead screw is movably arranged on the inner wall of one of the rectangular boxes. There are two rectangular guide blocks in total. One of the rectangular guide blocks is threadedly connected to the transverse lead screw. One end of the rectangular sleeve is connected to the side surface of the rectangular guide block. The damping rotating shaft is fixedly installed on the side surface of the end of the rectangular sleeve that extends out of the rectangular box. One end of the transverse lead screw that extends out of the rectangular box is fixedly provided with a first turntable;

[0008] The limiting unit includes a rectangular frame plate, a bidirectional lead screw, a support vertical plate, and a limiting plate. The rectangular frame plate is fixedly arranged on the end surface of the damping rotating shaft and is hollow inside. The bidirectional lead screw is movably arranged on the inner wall of one end of the rectangular frame plate. There are two support vertical plates in total, which are respectively matched with the symmetrically arranged positive and negative two sections of threads on the bidirectional lead screw. The two limiting plates are respectively fixedly arranged on the side surfaces of the two support vertical plates, and the limiting plates are in an "L" shape. The touch coordinate calculation component is placed on the concave surfaces of the two limiting plates. One end of the bidirectional lead screw that extends out of the rectangular frame plate is fixedly provided with a second turntable.

[0009] Preferably, the adjustment unit further includes a transverse guide rod. The transverse guide rod is fixedly arranged on the inner wall of the other rectangular box and movably penetrates through the rectangular guide block. The rectangular sleeve and the rectangular guide block are arranged in one-to-one correspondence.

[0010] Preferably, the limiting unit further includes a longitudinal guide rod. The longitudinal guide rod is fixedly arranged on the inner wall of the other end of the rectangular frame plate and movably penetrates through the two support vertical plates.

[0011] Preferably, the image acquisition component is fixedly installed on the touch coordinate calculation component. The image acquisition component, the touch coordinate calculation component, and the infrared array laser are structures of the prior art.

[0012] Preferably, the bidirectional lead screw and the transverse lead screw are arranged perpendicular to each other.

[0013] Preferably, there are two infrared array lasers in total, which are symmetrically and fixedly arranged on the middle side surface of the touch bottom plate.

[0014] Compared with the prior art, the laser plane multi-point touch device of the present invention has the following beneficial effects:

[0015] 1. In the present invention, by setting the adjustment unit, after the "U"-shaped carrier is fixedly installed at the center of the top surface of the touch bottom plate, the transverse lead screw can be controlled to rotate forward and backward on the rectangular box by holding the first turntable. One of the rectangular guide blocks threadedly connected to the transverse lead screw can drive the rectangular sleeve to translate on the rectangular box under the action of force to adjust the exposed area. The overall limit unit arranged on the damping rotating shaft can help the image acquisition component and the touch coordinate calculation component to adjust the distance from the touch bottom plate. The other rectangular guide block can slide and translate on the transverse guide rod to cooperate with the rectangular sleeve and the overall movement of the limit unit and provide auxiliary support for it. The damping rotating shaft rotates to cooperate with the image acquisition component and the touch coordinate calculation component to adjust the placement angle on the rectangular sleeve. After the adjustment stops, the positions and angles of the image acquisition component and the touch coordinate calculation component are fixed and static, and the device has high stability in adjusting and positioning the image acquisition component and the touch coordinate calculation component.

[0016] 2. In the present invention, by setting the limit unit, the touch coordinate calculation component can be placed on the concave surfaces of two "L"-shaped limit plates. By holding the second turntable, the bidirectional lead screw can be controlled to rotate forward and backward on the rectangular frame plate. The two support vertical plates threadedly connected to the bidirectional lead screw can move relative to each other under the action of force to help the two limit plates adjust the distance inside the rectangular frame plate. The touch coordinate calculation component can be tightly clamped and limited between the two limit plates. The longitudinal guide rod can guide the sliding and translation of the two support vertical plates to cooperate with the movement of the limit plates and provide auxiliary support for it. The device makes the disassembly and assembly operations of the image acquisition component and the touch coordinate calculation component on the carrier and the touch bottom plate simple and convenient. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of a laser plane multi-point touch device of the present invention;

[0019] Figure 2It is a side view structural schematic diagram of a laser planar multi-touch device of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 For this utility model Figure 2 Schematic diagram of the cross-section structure at BB in the middle;

[0022] Figure 5 The utility model is a schematic diagram of a top view of the structure of a laser planar multi-touch device.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Touch the bottom plate;

[0025] 2. Adjustment unit; 201. Carrying frame; 202. Rectangular box; 203. Transverse screw rod; 204. Rectangular guide block; 205. Rectangular sleeve; 206. Damping shaft; 207. Transverse guide rod;

[0026] 3. Limiting unit; 301. Rectangular frame plate; 302. Bidirectional screw rod; 303. Supporting vertical plate; 304. Limiting plate; 305. Longitudinal guide rod;

[0027] 4. Image acquisition component;

[0028] 5. Touch coordinate calculation component;

[0029] 6. Infrared array laser. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0033] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, a laser plane multi-point touch device includes a touch bottom plate 1, an image acquisition component 4, a touch coordinate calculation component 5, and an infrared array laser 6, and further includes: an adjustment unit 2 and a limit unit 3 arranged between the touch bottom plate 1 and the touch coordinate calculation component 5;

[0034] The adjustment unit 2 includes a carrier frame 201, a rectangular box 202, a transverse lead screw 203, a rectangular guide block 204, a rectangular sleeve 205, and a damping rotating shaft 206. The carrier frame 201 is in a "U" shape and is fixedly installed at the center of the top surface of the touch bottom plate 1. There are two rectangular boxes 202 in total and they are symmetrically and fixedly embedded in the top surface of the carrier frame 201. The transverse lead screw 203 is movably arranged on the inner wall of one of the rectangular boxes 202. There are two rectangular guide blocks 204 in total. One of the rectangular guide blocks 204 is threadedly connected to the transverse lead screw 203. One end of the rectangular sleeve 205 is connected to the side surface of the rectangular guide block 204. The damping rotating shaft 206 is fixedly installed on the side surface of one end of the rectangular sleeve 205 that extends out of the rectangular box 202.

[0035] The limit unit 3 includes a rectangular frame plate 301, a bidirectional lead screw 302, a support vertical plate 303, and a limit plate 304. The rectangular frame plate 301 is fixedly arranged on the end surface of the damping rotating shaft 206 and its interior is hollow. The bidirectional lead screw 302 is movably arranged on the inner wall of one end of the rectangular frame plate 301. There are two support vertical plates 303 in total and they are respectively matched with the positive and negative two threaded sections symmetrically arranged on the bidirectional lead screw 302. Two limit plates 304 are respectively fixedly arranged on the side surfaces of the two support vertical plates 303, and the limit plate 304 is in an "L" shape, and the touch coordinate calculation component 5 is placed on the concave surfaces of the two limit plates 304.

[0036] Furthermore, the adjustment unit 2 further includes a transverse guide rod 207. The transverse guide rod 207 is fixedly arranged on the inner wall of the other rectangular box 202 and movably penetrates through the rectangular guide block 204. The rectangular sleeve 205 and the rectangular guide block 204 are arranged in one-to-one correspondence.

[0037] Further, the image acquisition component 4 is fixedly installed on the touch coordinate calculation component 5.

[0038] Further, there are two infrared array lasers 6 in total, which are symmetrically and fixedly arranged on the middle side surface of the touch bottom plate 1.

[0039] The adjustment unit 2 enables the device to have high positioning stability in adjusting the image acquisition component 4 and the touch coordinate calculation component 5. Embodiment

[0040] As Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, a laser plane multi-point touch device includes a touch bottom plate 1, an image acquisition component 4, a touch coordinate calculation component 5 and an infrared array laser 6, and further includes: an adjustment unit 2 and a limit unit 3 arranged between the touch bottom plate 1 and the touch coordinate calculation component 5;

[0041] The adjustment unit 2 includes a carrier 201, a rectangular box 202, a transverse lead screw 203, a rectangular guide block 204, a rectangular sleeve 205 and a damping rotating shaft 206. The carrier 201 is in a "U" shape and is fixedly installed at the center of the top surface of the touch bottom plate 1. There are two rectangular boxes 202 in total, which are symmetrically and fixedly embedded in the top surface of the carrier 201. The transverse lead screw 203 is movably arranged on the inner wall of one of the rectangular boxes 202. There are two rectangular guide blocks 204 in total. One of the rectangular guide blocks 204 is threadedly connected to the transverse lead screw 203. One end of the rectangular sleeve 205 is connected to the side surface of the rectangular guide block 204. The damping rotating shaft 206 is fixedly installed on the side surface of one end of the rectangular sleeve 205 that extends out of the rectangular box 202.

[0042] The limit unit 3 includes a rectangular frame plate 301, a bidirectional lead screw 302, a support vertical plate 303 and a limit plate 304. The rectangular frame plate 301 is fixedly arranged on the end surface of the damping rotating shaft 206 and is hollow inside. The bidirectional lead screw 302 is movably arranged on the inner wall of one end of the rectangular frame plate 301. There are two support vertical plates 303 in total, which respectively cooperate with the positive and negative two threaded sections symmetrically arranged on the bidirectional lead screw 302. The two limit plates 304 are respectively fixedly arranged on the side surfaces of the two support vertical plates 303, and the limit plate 304 is in an "L" shape, and the touch coordinate calculation component 5 is placed on the concave surfaces of the two limit plates 304.

[0043] Further, the limit unit 3 further includes a longitudinal guide rod 305, and the longitudinal guide rod 305 is fixedly arranged on the inner wall of the other end of the rectangular frame plate 301 and movably penetrates through the two support vertical plates 303.

[0044] Further, the image acquisition component 4 is fixedly installed on the touch coordinate calculation component 5.

[0045] Furthermore, the bidirectional screw rod 302 and the transverse screw rod 203 are arranged perpendicular to each other.

[0046] The limiting unit 3 enables the image acquisition component 4 and the touch coordinate calculation component 5 to be easily assembled and disassembled on the carrier 201 and the touch base plate 1 .

[0047] The following is the working principle of the utility model:

[0048] After the carrier 201 is fixedly installed at the center of the top surface of the touch base plate 1, the first turntable is held to control the transverse screw rod 203 to rotate forward and backward on the rectangular box 202. One of the rectangular guide blocks 204 threadedly connected to the transverse screw rod 203 is subjected to force to drive the rectangular sleeve 205 to translate on the rectangular box 202 to adjust the exposed area. The limiting unit 3 set on the damping shaft 206 helps the image acquisition component 4 and the touch coordinate calculation component 5 to adjust the distance from the touch base plate 1. The other rectangular guide block 204 slides and translates on the transverse guide rod 207 to coordinate with the rectangular sleeve 205 and the limiting unit 3 to be adjusted as a whole. The damping shaft 206 rotates to coordinate with the image acquisition component 4 and the touch coordinate calculation component 5 The placement angle is adjusted on the rectangular sleeve 205. After the adjustment is stopped, the positions and angles of the image acquisition component 4 and the touch coordinate calculation component 5 are fixed and remain stationary. The touch coordinate calculation component 5 is placed on the concave surfaces of two "L"-shaped limit plates 304. The second turntable is held to control the bidirectional screw rod 302 to rotate forward and backward on the rectangular frame plate 301. The two support vertical plates 303 threadedly connected to the bidirectional screw rod 302 are subjected to force and move relative to each other to help the two limit plates 304 adjust the spacing on the inner side of the rectangular frame plate 301. The touch coordinate calculation component 5 is tightly limited between the two limit plates 304, and the longitudinal guide rod 305 guides the two support vertical plates 303 to slide and translate to cooperate with the adjustment of the limit plates 304.

[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A laser planar multi-touch device, comprising a touch base plate (1), an image acquisition component (4), a touch coordinate calculation component (5) and an infrared array laser (6), characterized in that: Further included are: An adjustment unit (2) and a limiting unit (3) arranged between the touch base plate (1) and the touch coordinate calculation component (5); The adjustment unit (2) includes a carrier frame (201), a rectangular box (202), a transverse lead screw (203), a rectangular guide block (204), a rectangular sleeve (205), and a damping rotating shaft (206). The carrier frame (201) is in a "U" shape and is fixedly installed at the center of the top surface of the touch base plate (1). There are two rectangular boxes (202) in total, which are symmetrically and fixedly embedded in the top surface of the carrier frame (201). The transverse lead screw (203) is movably arranged on the inner wall of one of the rectangular boxes (202). There are two rectangular guide blocks (204) in total. One of the rectangular guide blocks (204) is threadedly connected to the transverse lead screw (203). One end of the rectangular sleeve (205) is connected to the side surface of the rectangular guide block (204). The damping rotating shaft (206) is fixedly installed on the side surface of the end of the rectangular sleeve (205) that extends out of the rectangular box (202) movably; The limiting unit (3) includes a rectangular frame plate (301), a bidirectional lead screw (302), a support vertical plate (303), and a limiting plate (304). The rectangular frame plate (301) is fixedly arranged on the end surface of the damping rotating shaft (206) and is hollow inside. The bidirectional lead screw (302) is movably arranged on the inner wall of one end of the rectangular frame plate (301). There are two support vertical plates (303) in total, which are respectively matched with the positive and negative two sections of threads symmetrically arranged on the bidirectional lead screw (302). The two limiting plates (304) are respectively fixedly arranged on the side surfaces of the two support vertical plates (303), and the limiting plate (304) is in an "L" shape, and the touch coordinate calculation component (5) is placed on the concave surfaces of the two limiting plates (304).

2. The laser planar multi-touch device according to claim 1, characterized in that: The adjustment unit (2) further includes a transverse guide rod (207). The transverse guide rod (207) is fixedly arranged on the inner wall of the other rectangular box (202) and movably penetrates through the rectangular guide block (204). The rectangular sleeves (205) and the rectangular guide blocks (204) are arranged in one-to-one correspondence.

3. The laser planar multi-touch device according to claim 1, characterized in that: The limiting unit (3) further includes a longitudinal guide rod (305). The longitudinal guide rod (305) is fixedly arranged on the inner wall of the other end of the rectangular frame plate (301) and movably penetrates through the two support vertical plates (303).

4. The laser planar multi-touch device according to claim 1, characterized in that: The image acquisition component (4) is fixedly installed on the touch coordinate calculation component (5).

5. The laser planar multi-touch device according to claim 1, characterized in that: The bidirectional lead screw (302) and the transverse lead screw (203) are arranged perpendicular to each other.

6. The laser planar multi-touch device according to claim 1, characterized in that: There are two infrared array lasers (6) in total, which are symmetrically and fixedly arranged on the side surfaces of the middle ends of the touch base plate (1).

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