CN212135399U - Touch control interaction system based on solid-state laser radar - Google Patents
Touch control interaction system based on solid-state laser radar Download PDFInfo
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- CN212135399U CN212135399U CN202020655850.6U CN202020655850U CN212135399U CN 212135399 U CN212135399 U CN 212135399U CN 202020655850 U CN202020655850 U CN 202020655850U CN 212135399 U CN212135399 U CN 212135399U
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Abstract
The utility model relates to a based on solid-state laser radar touch-control interactive system, include: the computer comprises a computer main body, a data processing program and an application program are operated in the computer main body; the projector is connected with the computer main body through a display interface and used for projecting computer pictures; the projector projects a computer picture onto the imaging plane; the solid laser radar is arranged on the imaging plane, the solid laser radar emits an optical film, and the solid laser radar is electrically connected with the computer main body; the utility model discloses a common projecting apparatus of solid-state laser radar cooperation and computer main part constitute interactive system, and the installation is maintained simply, and solid-state laser radar does not have mechanical wear, and the refresh rate is high, and is longe-lived, and solid-state laser radar's angular resolution is high, and the distance is far away, is particularly suitable for the mutual occasion of large size touch-control.
Description
Technical Field
The utility model belongs to the human-computer interaction field, concretely relates to touch-control interactive system based on solid-state laser radar.
Background
The existing large-screen touch interaction equipment generally uses technologies such as an infrared frame, a camera and a mechanical scanning type laser radar to detect a touch event, and is integrated with display equipment to form a touch interaction system.
Although the infrared frame technology is mature in technology and high in precision, the installation and maintenance are complex, the attractiveness of the display device is affected by the fact that a frame needs to be protruded, and the problem of high cost is also faced in large-size touch occasions.
The camera technology generally adopts the split type design of transmitter and receiver, needs to have the interval that is greater than 50cm between transmitter and the receiver, also faces the installation and maintains trouble, shelters from the receiver scheduling problem easily among the user interaction process.
Mechanical scanning formula lidar is the integral type design, and the installation is simple, but because there is mechanical rotation in the work, so also have the life-span not high, the refresh rate low scheduling problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a touch-control interactive system based on solid-state laser radar.
For solving the technical problem, the technical solution of the utility model is realized as follows:
a touch interaction system based on a solid-state laser radar comprises:
the computer comprises a computer main body, a data processing program and an application program are operated in the computer main body;
the projector is connected with the computer main body through a display interface and used for projecting computer pictures;
the projector projects a computer picture onto the imaging plane;
the solid laser radar is arranged on the imaging plane, the solid laser radar emits an optical film, and the solid laser radar is electrically connected with the computer main body;
when a user touches the imaging plane, the data processing program receives point cloud data sent by the solid-state laser radar, detects a touch event of the user on the imaging plane after algorithm processing, and sends the touch event to the application program, and the application program receives the touch event, displays a corresponding picture and completes interaction with the user.
As a preferred embodiment of the present invention, the imaging plane is a plane for displaying a picture of the projector.
As an optimized scheme of the utility model, the plane that shows the projecting apparatus picture is blackboard, wall or projection curtain.
As the utility model discloses an optimal scheme, be provided with fine-tuning in the solid-state laser radar, adjust the angle of the light membrane of solid-state laser radar transmission through fine-tuning for the light membrane of solid-state laser radar transmission is parallel with the imaging plane, and the two interval is less than 5 mm.
As an optimized scheme of the utility model, fine-tuning includes two adjust knob for realize the membrane of solid-state laser radar transmission respectively about on the imaging plane adjust with control the regulation.
As a preferred scheme of the utility model, the light film emitted by the solid-state laser radar is composed of an emitted invisible light film and an emitted visible light film;
when the emitted invisible light film is coincident with the visible light film, to indicate the spatial position of the invisible light film to installation maintenance personnel.
As the utility model discloses a preferred scheme, solid-state laser radar is 2D solid-state laser radar, solid-state laser radar launches the invisible light membrane and covers on imaging plane, has blockked the invisible light membrane when user touch imaging plane, is detected and calculates position coordinate information by solid-state laser radar.
As a preferable aspect of the present invention, the angular resolution of the solid-state laser radar is less than or equal to 0.15 °.
The utility model discloses following beneficial effect can be brought:
(1) the utility model discloses a common projecting apparatus of solid-state laser radar cooperation and computer main part constitute interactive system, and the installation is maintained simply.
(2) The utility model discloses well solid-state laser radar does not have mechanical wear, and the refresh rate is high, and is longe-lived.
(3) The utility model discloses well solid-state laser radar's angular resolution is high, and the distance is far away, is particularly suitable for the mutual occasion of large size touch-control.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings are obtained according to these drawings without inventive exercise.
Fig. 1 is a system composition diagram of a touch interaction system based on a solid-state lidar of the present invention;
fig. 2 is a diagram of detecting touch points in a touch interactive system based on a solid-state laser radar of the present invention;
fig. 3 is a flowchart illustrating the processing steps of the data processing procedure in the touch interactive system based on the solid-state lidar.
In the figure, a computer body 1, a solid-state laser radar 2, an imaging plane 3, a projector 4 and an opaque object 5.
Detailed Description
To further explain the technical means, creation features, achievement objectives and effects of the present invention, it is easy to understand and understand that the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation, structure, features and effects of a touch interactive system based on solid-state lidar.
Please refer to fig. 1, a touch interaction system based on solid state laser radar, including computer subject 1, solid state laser radar 2, imaging plane 3 and projector 4, the utility model discloses a common projector 4 of solid state laser radar 2 cooperation and computer subject 1 constitute interactive system, and the installation is maintained simply, and solid state laser radar 2 does not have mechanical wear simultaneously, and the refresh rate is high, and is longe-lived, and solid state laser radar 2 still has the angular resolution ratio high, and the efficiency far away is particularly suitable for the mutual occasion of large size touch, specific as following elaboration:
the system comprises a computer main body 1, wherein a data processing program and an application program run in the computer main body 1, the data processing program is used for processing point cloud data sent by a laser radar, the steps of filtering, clustering, cluster analysis, coordinate operation and the like are carried out, the steps are adopted to extract coordinates, the coordinates of touch points in the point cloud data are finally extracted and encapsulated to form touch events, the touch events are sent to the application program through a TUIO protocol, and after the touch events are received by the application program, display pictures are adjusted according to different actual application requirements, and interaction with a user is completed: for example, calculator software, which completes the input and calculation functions of numbers by recognizing different buttons clicked by a user; for example, drawing software draws a user on a display screen by detecting a touch track of the user, which simply explains a general idea of a data processing program and an application program, and a person skilled in the art can complete a corresponding programming code and input a corresponding algorithm and protocol according to the idea, which are common general knowledge of the person skilled in the art, so that the programming code, the algorithm and the protocol part are not described in detail;
specifically, referring to fig. 3, the data processing procedure includes the following steps:
s1, when a user touches the imaging plane 3, the solid-state laser radar 2 acquires point cloud data and sends the point cloud data to the computer main body 1, and the computer main body 1 acquires the point cloud data sent by the solid-state laser radar 2, so that a data processing program receives the point cloud data sent by the solid-state laser radar 2;
s2, filtering and clustering the point cloud data by a data processing program;
s3, extracting touch point coordinates of the filtered and clustered point cloud data by a data processing program;
s4, the data processing program transforms the touch point coordinate from the solid laser radar coordinate system to the display coordinate system, thereby obtaining the final touch event;
please refer to fig. 2: when a user touches the imaging plane 3 with the opaque object 5, the invisible light emitted by the solid-state laser radar 2 is blocked by the opaque object 5, and then is reflected back to be received by the solid-state laser radar 2, and meanwhile, distance information d and angle information θ are obtained, which needs to be described as follows: how to obtain the distance information d and the angle information θ is common knowledge of those skilled in the art, and the distance information d and the angle information θ can be obtained by the solid-state laser radar 2, so that the implementation principle is not described in detail, and the two-dimensional coordinate of the opaque object 5 in the solid-state laser radar 2 coordinate system (i.e., the solid-state laser radar coordinate system) is obtained by the following formula:
then, the two-dimensional coordinates of the opaque object 5 in the projection frame coordinate system (i.e., the above-mentioned display coordinate system) are obtained by using the homography transformation matrix H calibrated in advance and using the following formula
S5, the data processing program sends the final touch event to the application program;
it should be noted that: the solid-state laser radar coordinate system and the display coordinate system are established by referring to the solid-state laser radar 2;
the projector 4 is connected between the computer main body 1 and the projector 4 through a display interface and is used for projecting computer pictures;
the imaging plane 3, the imaging plane 3 is arranged at the rear side of the projector 4, the projector 4 projects the computer picture onto the imaging plane 3, the imaging plane 3 is a plane for displaying the projector picture, preferably, the plane for displaying the projector picture is a blackboard, a wall surface or a projection curtain, and the imaging plane 3 includes but is not limited to the above embodiments;
the solid laser radar 2, the solid laser radar 2 is fixed at the front end of the imaging plane 3 near the upper position, the solid laser radar 2 emits light film, the light film emitted by the solid laser radar 2 is composed of an emitted invisible light film and an emitted visible light film, when the emitted invisible light film is coincident with the visible light film, the space position of the invisible light film is indicated for installation and maintenance personnel, the solid-state laser radar 2 is electrically connected with the computer main body 1 through a corresponding connecting wire, a fine adjustment mechanism is arranged in the solid-state laser radar 2, the angle of the light film emitted by the solid-state laser radar 2 is adjusted by the fine adjustment mechanism, so that the light film emitted by the solid-state laser radar 2 is parallel to the imaging plane 3, and the distance between the two is less than 5mm, the fine adjustment mechanism comprises two adjusting knobs which are both designed in a rotary mode, the optical film is used for respectively realizing the up-down adjustment and the left-right adjustment of the optical film emitted by the solid laser radar 2 on the imaging plane 3;
preferably, solid-state laser radar 2 is 2D solid-state laser radar, and solid-state laser radar 2 emits invisible light film to cover on imaging plane 3, has blocked invisible light film when the user touches imaging plane 3, is detected and calculates position coordinate information by solid-state laser radar 2, and solid-state laser radar 2's angular resolution is less than or equal to 0.15.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments are still modified, or some or all of the technical features are equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. A touch control interaction system based on a solid state laser radar is characterized by comprising:
the computer comprises a computer main body (1), wherein a data processing program and an application program run in the computer main body (1);
the projector (4), the said computer body (1) is connected with projector (4) through the display interface, in order to project the computer picture;
the projector (4) is used for projecting a computer picture onto the imaging plane (3);
the solid laser radar (2) is arranged on the imaging plane (3), the solid laser radar (2) emits an optical film, and the solid laser radar (2) is electrically connected with the computer main body (1);
solid-state laser radar (2) is 2D solid-state laser radar, be provided with fine setting mechanism in solid-state laser radar (2), through the angle of the light membrane of fine setting mechanism adjustment solid-state laser radar (2) transmission for the light membrane of solid-state laser radar (2) transmission is parallel with imaging plane (3), and the two interval is less than 5mm, the light membrane of solid-state laser radar (2) transmission comprises the invisible light membrane of transmission and the visible light membrane of transmission, the invisible light membrane covers on imaging plane (3) is launched in solid-state laser radar (2).
2. The solid state lidar based touch interactive system according to claim 1, wherein the imaging plane (3) is a plane displaying a projector screen.
3. The solid state lidar based touch interactive system of claim 2, wherein the plane displaying the projector screen is a blackboard, a wall surface or a projection curtain.
4. The solid state lidar based touch interaction system of claim 1, wherein the fine adjustment mechanism comprises two adjustment knobs for respectively achieving up-down adjustment and left-right adjustment of the optical film emitted by the solid state lidar (2) on the imaging plane (3).
5. The solid state lidar based touch interactive system according to claim 1, wherein the angular resolution of the solid state lidar (2) is less than or equal to 0.15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655850.6U CN212135399U (en) | 2020-04-27 | 2020-04-27 | Touch control interaction system based on solid-state laser radar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655850.6U CN212135399U (en) | 2020-04-27 | 2020-04-27 | Touch control interaction system based on solid-state laser radar |
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| Publication Number | Publication Date |
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| CN212135399U true CN212135399U (en) | 2020-12-11 |
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| CN202020655850.6U Active CN212135399U (en) | 2020-04-27 | 2020-04-27 | Touch control interaction system based on solid-state laser radar |
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