CN220584832U - Digital sand table system - Google Patents

Abstract

The application discloses digital sand table system, including sand table stage body, one or more interactive device, GIS image processing equipment and MR interactive processing equipment, one or more interactive device connects MR interactive processing equipment respectively, and GIS image processing equipment connects MR interactive processing equipment and sand table stage body respectively. The sand table body is used for displaying the sand table model and interacting with a user; the GIS image processing equipment is used for deploying GIS geographic application and a database, and the database stores a sand table model; the MR interaction processing equipment is used for processing and rendering the sand table model to obtain a holographic model; the one or more interactive devices are used to present a holographic model of the sand table model and to interact with the user in man-machine. In the embodiment of the application, the interactive linkage can be realized by the two three-dimensional information data presented by the sand table body and the holographic three-dimensional information data presented by one or more interactive devices.

Description

Digital sand table system

Technical Field

The application relates to the technical field of virtual reality, in particular to a digital sand table system.

Background

A sand table is a tool for simulating a real environment, and is usually a model made of specific materials according to a certain proportion relation according to a topographic map, an aerial photograph or a field topography. With the development of virtual reality technology, a virtual environment can be simulated and presented through a computer. The holographic sand table can fuse digital scenes by utilizing a holographic display technology, and then a virtual three-dimensional sand table image is displayed by combining hardware equipment. Holographic display generally adopts technologies such as holographic projection and 3D display, and map data displayed by the holographic display is usually prefabricated, so that the map data cannot be interactively linked.

Disclosure of Invention

The embodiment of the application provides a digital sand table system, and map data presented by the digital sand table can be interactively linked.

The embodiment of the application discloses digital sand table system, including sand table stage body, one or more interactive device, GIS image processing equipment and MR interactive processing equipment, wherein:

one or more interactive devices are respectively connected with the MR interactive processing device, and the GIS image processing device is respectively connected with the MR interactive processing device and the sand table body;

the sand table body is used for displaying the sand table model and interacting with a user;

the GIS image processing equipment is used for deploying GIS geographic application and a database, and the database stores a sand table model;

the MR interaction processing equipment is used for processing and rendering the sand table model to obtain a holographic model;

one or more interactive devices for presenting a holographic model of the sand table model and for human-machine interaction with the user.

In the embodiment of the application, the digital sand table system comprises a sand table body, one or more interaction devices, GIS image processing devices and MR interaction processing devices, wherein the one or more interaction devices are respectively connected with the MR interaction processing devices, and the GIS image processing devices are respectively connected with the MR interaction processing devices and the sand table body. The sand table body is used for displaying the sand table model and interacting with a user; the GIS image processing equipment is used for deploying GIS geographic application and a database, and the database stores a sand table model; the MR interaction processing equipment is used for processing and rendering the sand table model to obtain a holographic model; the one or more interactive devices are used to present a holographic model of the sand table model and to interact with the user in man-machine. Through the information transmission among the sand table body, the one or more interactive devices, the GIS image processing device and the MR interactive processing device, the interactive linkage can be realized between the two three-dimensional information data presented by the sand table body and the holographic three-dimensional information data presented by the one or more interactive devices.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a digital sand table system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another digital sand table system disclosed in an embodiment of the present application;

FIG. 3 is a schematic view of a sand table body according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of an internal structure of a sand table body according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In order to better understand the solution of the present application, the following description will make clear and complete descriptions of the technical solution of the embodiment of the present application with reference to the accompanying drawings in the embodiment of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

With the development of virtual reality technology, a virtual environment can be simulated and presented through a computer. The holographic sand table can fuse digital scenes by utilizing a holographic display technology, and then a virtual three-dimensional sand table image is displayed by combining hardware equipment. Holographic display generally adopts technologies such as holographic projection and 3D display, and is generally used for displaying holographic effects, so that interaction between a virtual world and a real world cannot be realized.

The holographic projection technique (Front-projected Holographic Display) is a technique that records and reproduces a true three-dimensional image of an object using the principles of interference and diffraction. The holographic electronic sand table generally adopts a 360-degree holographic display technology, the technology utilizes a projector or a display screen and a spectroscope in the device, adopts an optical principle to project an image on a mirror surface rotating at high speed, thereby suspending a three-dimensional map on the mid-air imaging of a live-action, carrying out video signal rendering by a computer, integrally manufacturing a multi-angle and omnibearing 360-degree three-dimensional suspended map image, and cooperating with the visual error of human eyes to create a space three-dimensional effect.

The 3D display technology is a novel display technology, and compared with the common 2D picture display, the 3D technology can make the picture become stereoscopic, the image is not limited on the plane of the screen any more, and the audience has the feeling of being personally on the scene. According to the principle of human eyes, 3D display technologies are divided into three types: color difference, polarization, and active shutter. The holographic sand table generally adopts polarized light type 3D technology (polarized 3D), and is matched with passive polarized glasses. The polarized 3D technology utilizes the principle that light has a vibration direction to decompose an original image, firstly, the image is divided into two groups of pictures of vertical polarized light and horizontal polarized light, then polarized lenses with different polarization directions are respectively adopted on the left and right sides of the 3D glasses, thus, the left and right eyes of a person can receive the two groups of pictures, and then the stereo image is synthesized through the brain.

However, the map data displayed by the holographic projection technology is prefabricated, only prefabricated contents can be displayed singly, and holographic data interaction and two-dimensional data synchronous change display cannot be performed; holographic imaging data in the 3D display technology are isolated and discrete, cannot be interactively linked with two-dimensional data, and cannot reflect the change of the data.

To solve the above-mentioned problem, in the embodiment of the present application, the digital sand table system includes a sand table body, one or more interaction devices, a geographic information system (Geographic Information System, GIS) image processing device, and a Mixed Reality (MR) interaction processing device, where the one or more interaction devices are respectively connected to the MR interaction processing device, and the GIS image processing device is respectively connected to the MR interaction processing device and the sand table body. The sand table body is used for displaying the sand table model and interacting with a user; the GIS image processing equipment is used for deploying GIS geographic application and a database, and the database stores a sand table model; the MR interaction processing equipment is used for processing and rendering the sand table model to obtain a holographic model; the one or more interactive devices are used to present a holographic model of the sand table model and to interact with the user in man-machine. Through the information transmission among the sand table body, the one or more interactive devices, the GIS image processing device and the MR interactive processing device, the interactive linkage can be realized between the two three-dimensional information data presented by the sand table body and the holographic three-dimensional information data presented by the one or more interactive devices.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a digital sand table system according to an embodiment of the present disclosure. As shown in fig. 1, the digital sand table system may include a sand table body 100, a GIS image processing apparatus 200, an MR interactive processing apparatus 300, and an interactive apparatus 400. One or more interactive devices 400 may be connected to the MR interactive processing device 300, respectively, and the gis image processing device 200 may be connected to the MR interactive processing device 300 and the sand table body 100, respectively;

a sand table body 100 for displaying a sand table model and interacting with a user;

the GIS image processing device 200 is used for deploying GIS geographic application and a database, wherein the database stores a sand table model;

the MR interaction processing device 300 is used for processing and rendering the sand table model to obtain a holographic model;

one or more interactive devices 400 for presenting a holographic model of the sand table model and for human-machine interaction with the user.

The sand table model can comprise two-dimensional and three-dimensional geographic data, environment data, plotting symbols and other information data. The sand table model can be a two-dimensional model or a three-dimensional model. The holographic model can be a holographic three-dimensional map which is constructed by analyzing and rendering the sand table model and combining the three-dimensional plotting and the three-dimensional model in real time. The GIS image processing apparatus 200 may be used for processing map data such as high-rise, video, and vector, and may be used for tilting data such as a camera model, a unit model, and a plot symbol. The GIS geographic application may include a data processing module that may normalize map data imported by a user through the sand table body 100 to obtain a sand table model, and may store the sand table model in a database. The MR interaction processing device 300 can deploy an MR holographic interaction engine application, and can analyze and render information data of the sand table model and construct a holographic three-dimensional map in real time by combining a three-dimensional plot and a three-dimensional model. One or more of the interactive devices 400 have a function of resisting natural environment interference, and may not be affected by external light, ambient brightness, and indoor light. The one or more interactive devices 400 also have an oversized field of view, illustratively a vertical field of view of no less than 57 ° and a horizontal field of view of no less than 70 °. The one or more interactive devices 400 may also automatically adjust the depth of the lens according to the light intensity of the external environment, so that the presented holographic model is not affected by the external light, indoor light, and other environmental factors.

After the digital sand table system is started, the user may send a model acquisition request to the GIS image processing apparatus 200 through the sand table body 100. After the GIS image processing apparatus 200 receives the model acquisition request from the sand table bench 100, all the sand table models stored in the database may be transmitted to the sand table bench 100. After the sand table body 100 receives all the sand table models transmitted from the GIS image processing apparatus 200, all the sand table models may be displayed.

In the case where all of the sand table models include the sand table model desired by the user, the user may select the desired first sand table module from all of the sand table models. After the sand table body 100 detects the user's selection operation of the first sand table model, the first sand table model may be displayed, and information of the first sand table model may be transmitted to the GIS image processing apparatus 200. After the GIS image processing device 200 receives the information of the first sand table model from the sand table body 100, the first sand table model may be transmitted to the MR interaction processing device 300. After the MR interaction processing device 300 receives the first sand table model from the GIS image processing device 200, the first sand table model may be processed and rendered to obtain a first holographic model, which may then be transmitted to one or more interaction devices 400. After the one or more interaction devices 400 receive the first holographic model from the MR interaction processing device 300, the first holographic model may be presented.

In the case that all the sand table models do not include the sand table model required by the user, the user may import data information corresponding to the first sand table model to the GIS image processing apparatus 200 through the sand table body 100 according to the need. After the GIS image processing apparatus 200 receives the data information corresponding to the first sand table model from the sand table body 100, the first sand table model may be determined according to the data information, and then the first sand table model may be transmitted to the sand table body 100 and the MR interaction processing apparatus 300. After the sand table body 100 receives the first sand table model from the GIS image processing device 200, the first sand table model may be displayed. After the MR interaction processing device 300 receives the first sand table model from the GIS image processing device 200, the first sand table model may be processed and rendered to obtain a first holographic model, which may then be transmitted to one or more interaction devices 400. After the one or more interaction devices 400 receive the first holographic model from the MR interaction processing device 300, the first holographic model may be presented.

One or more interaction devices 400, which are further configured to detect operation information of the user on the holographic model, and send the operation information to the MR interaction processing device;

the MR interaction processing device 300 is further configured to update the holographic model according to the operation information, send the updated holographic model to the one or more interaction devices 400, and send a synchronization request to the GIS image processing device 200 according to the operation information;

one or more interactive devices 400, also for presenting the updated holographic model;

the GIS image processing apparatus 200 is further configured to update the sand table model according to the synchronization request, and send the updated sand table model to the sand table body 100;

the sand table body 100 is also used to display updated sand table models.

Wherein the operation information may include plot information.

A bi-directional linkage may be provided between the sand table body 100 and one or more interactive devices 400. The bidirectional linkage may be various linkages, and the following description will be given by taking linkage of plotting operation as an example.

In the case where the user performs a plotting operation on the first sand table model through the sand table body 100, the sand table body 100 may detect first plotting information of the first sand table model by the user and may transmit the first plotting information to the GIS image processing apparatus 200. After receiving the first plot information sent by the sand table body 100, the GIS image processing apparatus 200 may update the first sand table model according to the first plot information to obtain a second sand table model, and may then send the second sand table model to the sand table body 100 and may send a first synchronization request to the MR interaction processing apparatus 300. After the sand table body 100 receives the second sand table model transmitted from the GIS image processing apparatus 200, the second sand table model may be displayed. After the MR interaction processing device 300 receives the first synchronization request sent by the GIS image processing device 200, the second sand table model may be acquired from the GIS image processing device 200. The MR interaction processing device 300 may process and render the second sand table model to obtain a second holographic model corresponding to the second sand table model. The MR interaction processing device 300 may send the second holographic model to one or more interaction devices 400. After the one or more interaction devices 400 receive the second holographic model from the MR interaction processing device 300, the second holographic model may be presented. Wherein the second sand table model includes plot information of the user for the first sand table model. The first synchronization control instructions are used to effect interactive linkage from the sand table body 100 to one or more interactive devices 400. The second holographic model includes plot information corresponding to the second sand table model.

In the case where the user performs a plotting operation on the first holographic model through the one or more interactive devices 400, the one or more interactive devices 400 may detect second plotting information of the first holographic model by the user and transmit the second plotting information to the MR interaction processing device 300. After the MR interaction processing device 300 receives the second plot information of the one or more interaction devices 400, the first holographic model may be updated according to the second plot information to obtain a third holographic model, after which the third holographic model may be sent to the one or more interaction devices 400, and the second synchronization request may be sent to the GIS image processing device 200. After the one or more interaction devices 400 receive the third holographic model from the MR interaction processing device 300, the third holographic model may be presented. After the GIS image processing apparatus 200 receives the second synchronization request from the MR interaction processing apparatus 300, the third holographic model may be acquired from the MR interaction processing apparatus 300. The GIS image processing apparatus 200 may update the first sand table model according to the third holographic model to obtain a third sand table model, and then may transmit the third sand table model to the sand table body 100. After the sand table body 100 receives the third sand table model from the GIS image processing device 200, the third sand table model may be displayed. Wherein the third holographic model comprises plot information of the user for the first holographic model. The second synchronization control instructions are used to implement interactive linkage from the one or more interactive devices 400 to the sand table body 100. The third sand table model includes plot information corresponding to a third holographic model.

The digital sand table system as disclosed in fig. 1 may include a sand table body 100, one or more interaction devices 400, a GIS image processing device 200, and an MR interaction processing device 300, wherein the one or more interaction devices 400 are respectively connected to the MR interaction processing device 300, and the GIS image processing device 200 is respectively connected to the MR interaction processing device 300 and the sand table body 100. The sand table body 100 may display a sand table model and interact with a user; the GIS image processing device 200 can deploy GIS geographic applications and a database, wherein the database stores a sand table model; the MR interaction processing device 300 can process and render the sand table model to obtain a holographic model; one or more of the interactive devices 400 may present a holographic model of the sand table model and human-machine interact with the user. Through information transmission among the sand table body 100, the one or more interactive devices 400, the GIS image processing device 200 and the MR interactive processing device 300, interactive linkage can be realized between two three-dimensional information data presented by the sand table body 100 and holographic three-dimensional information data presented by the one or more interactive devices 400.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another digital sand table system according to an embodiment of the present application. Wherein the digital sand table system shown in fig. 2 is optimized from the digital sand table system shown in fig. 1. As shown in fig. 2, the digital sand table system may also include a holographic data exchange device 500.

The holographic data exchange device 500 is connected to one or more of the interactive device 400, the MR interactive processing device 300 and the GIS image processing device 200, respectively.

The holographic data exchange device 500 may enable information transfer between one or more of the mutual devices and the MR interactive processing device 300, and between the MR interactive processing device 300 and the GIS image processing device 200.

The sand table body 100 may interact with a user and may detect first plot information of the user for a first sand table model. And transmits the first plot information to the GIS image processing apparatus 200. After the GIS image processing apparatus 200 receives the first plot information transmitted from the sand table body 100, the first sand table model may be updated according to the first plot information to obtain a second sand table model, the second sand table model may be transmitted to the sand table body 100, and the first synchronization request may be transmitted to the MR interaction processing apparatus 300 through the holographic data exchange apparatus 500. After the sand table body 100 receives the second sand table model transmitted from the GIS image processing apparatus 200, the second sand table model may be displayed. After the MR interaction processing device 300 receives the first synchronization request sent by the GIS image processing device 200, the second sand table model may be acquired from the GIS image processing device 200 through the holographic data exchange device 500. The MR interaction processing device 300 may process and render the second sand table model to obtain a second holographic model corresponding to the second sand table model. The MR interaction processing device 300 may send the second holographic model to one or more interaction devices 400 via the holographic data exchange device 500. After the one or more interaction devices 400 receive the second holographic model from the MR interaction processing device 300, the second holographic model may be presented.

One or more of the interaction devices 400 may interact with the user, may detect second plot information of the user for the first holographic model, and may transmit the second plot information to the MR interaction processing device 300 through the holographic data exchange device 500. After the MR interaction processing device 300 receives the second plot information of the one or more interaction devices 400, the first holographic model may be updated according to the second plot information to obtain a third holographic model, and then the third holographic model may be transmitted to the one or more interaction devices 400 and the second synchronization request may be transmitted to the GIS image processing device 200 through the holographic data exchange device 500. After the one or more interaction devices 400 receive the third holographic model transmitted by the MR interaction processing device 300, the third holographic model may be presented. After the GIS image processing apparatus 200 receives the second synchronization request from the MR interaction processing apparatus 300, the third holographic model may be acquired from the MR interaction processing apparatus 300 through the holographic data exchange apparatus 500. The GIS image processing apparatus 200 may update the first sand table model according to the third holographic model to obtain a third sand table model, and then may transmit the third sand table model to the sand table body 100. After the sand table body 100 receives the third sand table model from the GIS image processing device 200, the third sand table model may be displayed.

The digital sand table system as disclosed in fig. 2 may include a sand table body 100, one or more interactive devices 400, a GIS image processing device 200, an MR interactive processing device 300, and a holographic data exchange device 500, the sand table body 100 being connected to the GIS image processing device 200, the holographic data exchange device 500 being connected to the one or more interactive devices 400, GIS image processing device 200, and MR interactive processing device 300, respectively. The sand table body 100 may display a sand table model and interact with a user; the GIS image processing device 200 can deploy GIS geographic applications and a database, wherein the database stores a sand table model; the MR interaction processing device 300 can process and render the sand table model to obtain a holographic model; one or more of the interaction devices 400 may present a holographic model of the sand table model and human-machine interact with the user; the holographic data exchange device 500 may enable information transfer between one or more of the mutual devices 400 and the MR interaction processing device 300, and between the MR interaction processing device 300 and the GIS image processing device 200. Through information transmission among the sand table body 100, the one or more interactive devices 400, the GIS image processing device 200 and the MR interactive processing device 300, interactive linkage can be realized between two three-dimensional information data presented by the sand table body 100 and holographic three-dimensional information data presented by the one or more interactive devices 400.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a sand table body 100 according to an embodiment of the present disclosure. As shown in fig. 3, the sand table body 100 may include a touch display screen 110 and a circumferential positioning plate 120, wherein:

a touch display screen 110 for displaying the sand table model and interacting with a user;

the circumferential positioning plate 120 is used to achieve a time-space synchronization of the sand table model and the holographic model in cooperation with one or more interactive devices 400.

Illustratively, the touch display 110 may be coupled to the GIS image processing device 200.

After the digital sand table system is started, a user may acquire all sand table models stored by the GIS image processing apparatus 200 through the sand table body 100. The touch display screen 110 may display all of the sand table models. In the case where the user's desired sand table model is included in all of the sand table models displayed by the touch display screen 110, the user may select the desired sand table model. The touch display screen 110 may display the sand table model. In the case where the user's desired sand table model is not included in all of the sand table models displayed by the touch display screen 110, the user can import the desired sand table model through the touch display screen 110. The touch display screen 110 may display the sand table model.

The touch display 110 may also detect user operation information for the sand table model. For example, in case that a user's plotting operation on the sand table model is detected, the touch display screen 110 may acquire the plotting information and transmit the plotting information to the GIS image processing apparatus 200.

The circumferential positioning plate 120 may be an augmented reality (Augmented Reality, AR ⁾ A camera may be mounted on one or more of the interactive devices 400, the camera may capture AR codes, and then the time-space synchronization of the sand table model and the holographic model may be achieved based on the AR codes captured by the camera. No external camera is needed to be erected to realize the positioning and synchronization of the two-dimensional data and the holographic three-dimensional data, so that the three-dimensional model is not limited by the position of the real environment.

The sand table body 100 may also include a cover 130. The touch display screen 110 may be disposed on top of the cover 130, and the circumferential positioning plate 120 may be disposed circumferentially around the touch display screen 110.

The sand table body 100 may further include a housing 140, where the housing 140 and the cover 130 enclose a receiving cavity. One or more of the interactive device 400, the GIS image processing device 200, the MR interactive processing device 300, and the holographic data exchange device 500 may be placed within the containment chamber.

The cover 130 and the housing 140 of the sand table body 100 may be sheet metal structural members.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating an internal structure of a sand table body 100 according to an embodiment of the present disclosure. As shown in fig. 4, the cover 130 and the housing 140 of the sand table body 100 may enclose a receiving cavity, and one or more of the interaction device 400, the GIS image processing device 200, and the MR interaction processing device 300 may be placed in the receiving cavity.

The side of the housing 140 of the sand table body 100 may be provided with one or more drawing type storage cabinets 150, and the one or more drawing type storage cabinets 150 may store one or more interaction devices 400.

The housing 140 may be provided on a side thereof with one or more aerial plugs 160, and one or more interactive devices 400 may be connected to the holographic data exchange device 500 via the aerial plugs 160.

The bottom side of the cover 130 of the sand table body 100 may be provided with a touch bar that may enable user interaction between the touch display 110.

The bottom side of the casing 140 of the sand table body 100 is provided with a plurality of pulleys 170, and the plurality of pulleys 170 can facilitate the movement of the sand table body 100.

The one or more interactive devices 400 may include MR head display devices. The user may interact with the MR head display device. Illustratively, the MR head-display device may recognize and detect the motion and gesture of the user, and then may perform corresponding operations on the holographic model according to the motion and gesture of the user, and transmit the operation information to the MR interaction processing device 300.

The one or more interactive devices 400 may also include a handle to which the MR head display device is connected. The user can operate the holographic model through the handle. The one or more interactive devices 400 may acquire operation information of the handle and transmit the operation information to the MR interactive processing device 300.

It is to be understood that the same or related information may be referred to each other in the different embodiments described above. The foregoing description is not intended to limit the preferred embodiments of the present application, but is not intended to limit the scope of the present application, and any such modifications, equivalents and adaptations of the embodiments described above in accordance with the principles of the present application should and are intended to be within the scope of the present application, as long as they do not depart from the scope of the present application.

Claims (10)

1. A digital sand table system, comprising a sand table body, one or more interaction devices, a GIS image processing device and an MR interaction processing device, wherein:

the one or more interaction devices are respectively connected with the MR interaction processing device, and the GIS image processing device is respectively connected with the MR interaction processing device and the sand table body;

the sand table body is used for displaying the sand table model and interacting with a user;

the GIS image processing equipment is used for deploying GIS geographic application and a database, and the database stores the sand table model;

the MR interaction processing equipment is used for processing and rendering the sand table model to obtain a holographic model;

the one or more interaction devices are used for presenting the holographic model of the sand table model and performing man-machine interaction with a user.

2. The digital sand table system of claim 1 wherein the one or more interactive devices are further configured to detect user operational information on the holographic model, and send the operational information to the MR interactive processing device;

the MR interaction processing device is further used for updating the holographic model according to the operation information, sending the updated holographic model to the one or more interaction devices, and sending a synchronization request to the GIS image processing device according to the operation information;

the one or more interactive devices are further configured to present the updated holographic model;

the GIS image processing equipment is also used for updating the sand table model according to the synchronous request and sending the updated sand table model to the sand table body;

the sand table body is also used for displaying the updated sand table model.

3. The digital sand table system of claim 1 or 2 further comprising a holographic data exchange device, wherein:

the holographic data exchange device is respectively connected with the one or more interaction devices, the MR interaction processing device and the GIS image processing device;

the holographic data exchange device is used for realizing information transmission between the one or more interaction devices and the MR interaction processing device and information transmission between the MR interaction processing device and the GIS image processing device.

4. The digital sand table system of claim 3 wherein the sand table body comprises a touch display screen and a circumferential locating plate, wherein:

the touch display screen is used for displaying the sand table model and interacting with a user;

the circumferential positioning plate is used for matching with the one or more interaction devices to realize space-time synchronization of the sand table model and the holographic model.

5. The digital sand table system of claim 4 wherein the sand table body further comprises a cover body, wherein:

the touch display screen set up in the lid top, circumference locating plate is around touch display screen circumference sets up.

6. The digital sand table system of claim 5, wherein the sand table body further comprises a housing enclosing with the cover body a containment cavity, the one or more interaction devices, the GIS image processing device, the MR interaction processing device and the holographic data exchange device being disposed within the containment cavity; and the GIS image processing equipment is connected with the touch display screen.

7. The digital sand table system of claim 5 wherein a touch bar is provided at the bottom of the cover for enabling interaction between a user and the touch display screen.

8. The digital sand table system of claim 6 wherein the housing bottom side is provided with a plurality of pulleys.

9. The digital sand table system of claim 1 wherein the interactive device comprises an MR head-up device.

10. The digital sand table system of claim 9 wherein the interactive device further comprises a handle connected to the MR head display device.