Exhibition hall integrated central control demonstration method and device based on local area network communication

Abstract

This invention relates to a method and device for integrated central control and demonstration in exhibition halls based on local area network (LAN) communication. The method connects a central control terminal and designated demonstration devices to a LAN environment via network cables or access points (APs) connected to a switch in the exhibition hall. Designated demonstration devices include projectors, interactive voice screens, and video wall displays. Each designated demonstration device exposes its control interface via an HTTP server. The central control terminal's control interface for the designated demonstration devices is invoked, and control commands from the central control terminal are sent to the control interface of the designated demonstration devices via HTTP. The designated demonstration devices present the control content through a pre-set application and return the control results to the central control terminal, thus achieving control interaction between the central control terminal and the designated demonstration devices. This invention enables unified control of the content displayed on all equipment in the exhibition hall, requiring only one central control terminal to complete the entire explanation process; data interaction becomes convenient and stable.

Description

Technical Field

[0001] This invention belongs to the field of equipment demonstration technology, specifically relating to a method and device for integrated central control demonstration in exhibition halls based on local area network communication. Background Technology

[0002] Currently, exhibition halls typically provide a variety of smart devices (including large video walls, projectors, laptops, smart display screens, etc.) to dynamically present the exhibition content; during the demonstration, exhibition staff will engage in some interactive operations.

[0003] In current exhibition halls, different demonstration devices typically employ different control methods. For example, for devices offering voice-controlled interaction, the guide uses a Bluetooth remote control to collect and forward voice data. In scenarios where projectors display web pages, a laptop is usually placed, allowing the guide to perform operations such as page navigation. Guides need to switch between different control devices to present different content; this switching between demonstration scenarios can create a disjointed experience for visitors. Furthermore, Bluetooth-based voice remote controls are limited by Bluetooth transmission distance and can be unstable. Summary of the Invention

[0004] To address this issue, the present invention provides an integrated control and demonstration method and device for exhibition halls based on local area network communication, which solves the problems of inconsistent operation, unreliable and unstable control of traditional exhibition hall demonstration equipment, thus affecting user experience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for integrated central control demonstration of exhibition halls based on local area network communication, comprising:

[0006] The central control terminal and designated demonstration devices are connected to the exhibition hall switch via network cables or AP devices to form a local area network environment. The designated demonstration devices include projector devices, voice interactive screens, and splicing screens.

[0007] The designated demonstration device exposes its own control interface through an HTTP server.

[0008] The control interface of the central control terminal for the designated demonstration device is invoked, and the control commands of the central control terminal are sent to the control interface of the designated demonstration device via the HTTP protocol.

[0009] The designated demonstration device presents control content through a preset application, and the designated demonstration device returns the control results to the central control terminal, realizing the control interaction between the central control terminal and the designated demonstration device.

[0010] As a preferred solution for the integrated central control demonstration method in the exhibition hall based on local area network communication, the central control terminal is invoked to access the monitoring configuration interface, and the monitoring IP and port of the specified demonstration device are configured through the monitoring configuration interface.

[0011] As a preferred solution for the integrated central control demonstration method of exhibition hall based on local area network communication, when the designated demonstration device is a projector, the designated demonstration device controls the content presentation through a preset Windows desktop application;

[0012] When the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application;

[0013] When the designated demonstration device is a large video wall, the content presentation is controlled by a preset Windows desktop application or Android application.

[0014] As a preferred solution for the integrated central control demonstration method of exhibition hall based on local area network communication, when the designated demonstration device is a projector or a large video wall, a Windows computer is used to project the Windows desktop application onto the projector or the large video wall via an HDMI interface.

[0015] As a preferred solution for a central control demonstration method for exhibition halls based on local area network communication, the method receives touch operations from users on the central control terminal, calls the page switching component on the central control terminal, and switches the page of the designated demonstration device through the page switching component.

[0016] The system receives touch operations from the user on the central control terminal, invokes the video control component on the central control terminal, and uses the video control component to play, pause, or replay the video on the designated demonstration device.

[0017] The system receives touch operations from the user on the central control terminal, invokes the image control component on the central control terminal, and switches images on the designated demonstration device through the image control component.

[0018] As a preferred solution for the integrated central control demonstration method in the exhibition hall based on local area network communication, the voice control interaction component of the central control terminal is invoked to receive voice control operation commands from the user for the designated demonstration device. The user can then use the voice control operation commands to switch pages, play, pause or replay videos, and switch images on the designated demonstration device.

[0019] The present invention also provides an integrated central control demonstration device for exhibition halls based on local area network communication, comprising:

[0020] The local area network (LAN) module is used to connect the central control terminal and designated demonstration devices to the exhibition hall switch via network cables or AP devices to form a LAN environment. The designated demonstration devices include projectors, voice-interactive large screens, and splicing large screens.

[0021] The control interface exposure module is used to expose the control interface of the specified demonstration device itself through an HTTP server.

[0022] The control command issuing module is used to call the control interface of the central control terminal for the designated demonstration device, and send the control commands of the central control terminal to the control interface of the designated demonstration device via the HTTP protocol;

[0023] The control result display module is used to present the control content of the designated demonstration device through a preset application.

[0024] The control result feedback module is used for the designated demonstration device to return the control result to the central control terminal, thereby realizing the control interaction between the central control terminal and the designated demonstration device.

[0025] As a preferred solution for an integrated central control demonstration device for exhibition halls based on local area network communication, it also includes a monitoring configuration module, which is used to call the central control terminal to access the monitoring configuration interface and configure the monitoring IP and port of the specified demonstration device through the monitoring configuration interface.

[0026] As a preferred solution for an integrated central control demonstration device for exhibition halls based on local area network communication, the control result display module includes:

[0027] When the designated presentation device is a projector, the designated presentation device controls the content presentation through a preset Windows desktop application;

[0028] When the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application;

[0029] When the designated demonstration device is a large video wall, the designated demonstration device controls the content presentation through a preset Windows desktop application or Android application.

[0030] When the designated demonstration device is a projector or a large video wall, a Windows computer is used to project the Windows desktop application onto the projector or large video wall via an HDMI interface.

[0031] As a preferred solution for an integrated central control demonstration device for exhibition halls based on local area network communication, the control result display module includes:

[0032] The page switching submodule is used to receive the user's touch operation on the central control terminal, call the page switching component on the central control terminal, and switch the page of the specified demonstration device through the page switching component;

[0033] The video control submodule is used to receive touch operations from the user on the central control terminal, call the video control component on the central control terminal, and use the video control component to play, pause, or replay the video on the designated demonstration device.

[0034] The image switching submodule is used to receive the user's touch operation on the central control terminal, call the image control component on the central control terminal, and switch the image of the specified demonstration device through the image control component;

[0035] It also includes a voice control module, which is used to call the voice control interaction component of the central control terminal, receive voice control operation commands from the user on the designated demonstration device through the voice control interaction component, and perform page switching, video playback, pause or replay, and image switching on the designated demonstration device through voice control operation commands.

[0036] This invention has the following advantages: A central control terminal and designated demonstration devices are connected to a switch in the exhibition hall via network cables or access points (APs) to form a local area network (LAN) environment. The designated demonstration devices include projectors, interactive voice screens, and video wall displays. Each designated demonstration device exposes its control interface via an HTTP server. The control interface on the central control terminal is invoked, and control commands from the central control terminal are sent to the control interface of the designated demonstration device via HTTP. The designated demonstration device presents the control content through a preset application and returns the control results to the central control terminal, thus achieving control interaction between the central control terminal and the designated demonstration device. This invention enables unified control of the content displayed on all devices in the exhibition hall. Throughout the entire presentation process, only one central control terminal is needed to complete the entire presentation flow. It solves the drawback of previous solutions requiring different control devices for different demonstration scenarios. Through the TCP / IP protocol of the LAN, data interaction between the central control terminal and the demonstration devices becomes convenient and stable, overcoming the limitations of long-distance transmission using communication methods such as Bluetooth. Attached Figure Description

[0037] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0038] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0039] Figure 1 This is a schematic diagram of the demonstration method for integrated control of an exhibition hall based on local area network communication provided in an embodiment of the present invention;

[0040] Figure 2 This is the application scenario architecture of the exhibition hall integrated central control demonstration method based on local area network communication provided in the embodiments of the present invention;

[0041] Figure 3 This is a schematic diagram of the control interaction of the integrated control demonstration method for exhibition halls based on local area network communication provided in this embodiment of the invention;

[0042] Figure 4 This is the practical interface for the exhibition hall integrated central control demonstration method based on local area network communication provided in this embodiment of the invention;

[0043] Figure 5 This is a schematic diagram of the architecture of the integrated control demonstration device for exhibition halls based on local area network communication provided in an embodiment of the present invention. Detailed Implementation

[0044] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] See Figure 1 and Figure 2 Embodiment 1 of the present invention provides a method for integrated central control demonstration in exhibition halls based on local area network communication, comprising the following steps:

[0047] S1. Connect the central control terminal and the designated demonstration equipment to the exhibition hall switch via network cable or AP device to form a local area network environment. The designated demonstration equipment includes projector equipment, voice interactive screen and splicing screen.

[0048] S2. The designated demonstration device exposes its own control interface through an HTTP server;

[0049] S3. Call the control interface of the central control terminal for the designated demonstration device, and send the control command of the central control terminal to the control interface of the designated demonstration device via the HTTP protocol;

[0050] S4. The designated demonstration device presents control content through a preset application, and the designated demonstration device returns the control results to the central control terminal, realizing the control interaction between the central control terminal and the designated demonstration device.

[0051] In this embodiment, by introducing a central control terminal device, all designated demonstration devices, such as projectors and large video walls, are connected to the exhibition hall's local area network environment. The central control terminal then sends TCP / IP protocols to exchange data with the designated demonstration devices, issuing control commands and reporting operation results. This enables a single central control terminal to control and connect all other demonstration devices in the exhibition hall.

[0052] In this embodiment, the central control terminal is invoked to access the monitoring configuration interface, through which the monitoring IP and port of the designated demonstration device are configured. By opening the monitoring configuration interface of the central control terminal, the application-side monitoring IP and port of each designated demonstration device are configured, for example, for the park demonstration application: 192.168.1.2:8080; for the transportation demonstration application: 192.168.1.3:8081.

[0053] In this embodiment, when the designated demonstration device is a projector, the designated demonstration device controls the content presentation through a preset Windows desktop application; when the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application; when the designated demonstration device is a video wall display, the designated demonstration device controls the content presentation through a preset Windows desktop application or an Android application; when the designated demonstration device is a projector or a video wall display, a Windows computer is used to project the Windows desktop application onto the projector or video wall display via an HDMI interface.

[0054] Support Figure 3Specifically, on each designated demonstration device, a corresponding Android application or Windows desktop application is developed to control the content presentation, and the relevant control interfaces of the device itself are exposed through an HTTP server. When projectors and large-screen displays are needed, a Windows laptop is used to project the desktop application onto the projector or large screen via HDMI. When the presenter uses the central control terminal to operate the presentation content, the central control terminal sends relevant operation commands to the corresponding demonstration devices, which then perform real-time control. When switching to the next demonstration scenario, the same central control terminal is used to send control commands to the corresponding current demonstration device.

[0055] Support Figure 2 and Figure 4 In this embodiment, the system receives touch operations from the user on the central control terminal, invokes the page switching component on the central control terminal, and switches the page of the designated demonstration device through the page switching component; it also receives touch operations from the user on the central control terminal, invokes the video control component on the central control terminal, and plays, pauses, or replays the video on the designated demonstration device through the video control component; and it receives touch operations from the user on the central control terminal, invokes the image control component on the central control terminal, and switches the image of the designated demonstration device through the image control component. Simultaneously, the system can also invoke the voice control interaction component of the central control terminal to receive voice control operation commands from the user on the designated demonstration device; and use these voice control operation commands to switch pages, play, pause, or replay videos, and switch images on the designated demonstration device.

[0056] In summary, this invention connects the central control terminal and designated demonstration devices to a local area network (LAN) environment via a network cable or access point (AP) device, all connected to a switch in the exhibition hall. The designated demonstration devices include projectors, interactive voice screens, and video wall displays. Each designated demonstration device exposes its control interface via an HTTP server. The central control terminal's control interface for the designated demonstration device is invoked, and control commands from the central control terminal are sent to the designated demonstration device's control interface via HTTP. The designated demonstration device presents the control content through a pre-set application and returns the control results to the central control terminal, thus achieving control interaction between the central control terminal and the designated demonstration device. This invention enables unified control of the content displayed on all devices in the exhibition hall. Throughout the entire presentation process, only one central control terminal is needed to complete the entire presentation flow. This solves the drawback of previous solutions requiring different control devices for different demonstration scenarios. Through the TCP / IP protocol of the LAN, data interaction between the central control terminal and the demonstration devices becomes convenient and stable, overcoming the limitations of long-distance transmission using communication methods such as Bluetooth.

[0057] It should be noted that the method of this disclosure embodiment can be executed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method of this disclosure embodiment, and the multiple devices will interact with each other to complete the method described.

[0058] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0059] Example 2

[0060] See Figure 5 Embodiment 2 of the present invention also provides an integrated control demonstration device for exhibition halls based on local area network (LAN) communication, employing the LAN-based integrated control demonstration method for exhibition halls described in Embodiment 1 above. This integrated control demonstration device includes:

[0061] Local area network module 1 is used to connect the central control terminal and designated demonstration devices to the exhibition hall switch through network cables or AP devices to form a local area network environment. The designated demonstration devices include projector devices, voice interactive screens and splicing screens.

[0062] Control interface exposure module 2 is used for the specified demonstration device to expose its own control interface through an HTTP server.

[0063] The control command issuing module 3 is used to call the control interface of the central control terminal for the designated demonstration device, and send the control command of the central control terminal to the control interface of the designated demonstration device via the HTTP protocol;

[0064] Control result display module 4 is used to present control content of the designated demonstration device through a preset application;

[0065] The control result feedback module 5 is used for the designated demonstration device to return the control result to the central control terminal, thereby realizing the control interaction between the central control terminal and the designated demonstration device.

[0066] In this embodiment, a monitoring configuration module 6 is also included, which is used to call the central control terminal to access the monitoring configuration interface and configure the monitoring IP and port of the specified demonstration device through the monitoring configuration interface.

[0067] In this embodiment, the control result display module 4:

[0068] When the designated presentation device is a projector, the designated presentation device controls the content presentation through a preset Windows desktop application;

[0069] When the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application;

[0070] When the designated demonstration device is a large video wall, the designated demonstration device controls the content presentation through a preset Windows desktop application or Android application.

[0071] When the designated demonstration device is a projector or a large video wall, a Windows computer is used to project the Windows desktop application onto the projector or large video wall via an HDMI interface.

[0072] In this embodiment, the control result display module 4 includes:

[0073] The page switching submodule 41 is used to receive the user's touch operation on the central control terminal, call the page switching component on the central control terminal, and switch the page of the specified demonstration device through the page switching component;

[0074] The video control submodule 42 is used to receive the user's touch operation on the central control terminal, call the video control component on the central control terminal, and use the video control component to play, pause or replay the video on the designated demonstration device.

[0075] Image switching submodule 43 is used to receive user touch operation on the central control terminal, call the image control component on the central control terminal, and switch images on the designated demonstration device through the image control component.

[0076] In this embodiment, a voice control module 7 is also included, which is used to call the voice control interaction component of the central control terminal, receive the user's voice control operation instructions for the designated demonstration device through the voice control interaction component, and perform page switching, video playback, pause or replay, and image switching on the designated demonstration device through the voice control operation instructions.

[0077] It should be noted that the information interaction and execution process between the modules of the above-mentioned device are based on the same concept as the method embodiment in Embodiment 1 of this application, and the resulting technical effects are the same as those in the method embodiment of this application. For details, please refer to the description in the method embodiment shown above in this application, and it will not be repeated here.

[0078] Example 3

[0079] Embodiment 3 of the present invention provides a non-transitory computer-readable storage medium storing program code for a showroom integrated central control demonstration method based on local area network communication. The program code includes instructions for executing the showroom integrated central control demonstration method based on local area network communication as described in Embodiment 1 or any possible implementation thereof.

[0080] Computer-readable storage media can be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives, SSDs).

[0081] Example 4

[0082] Embodiment 4 of the present invention provides an electronic device, including: a memory and a processor;

[0083] The processor and the memory communicate with each other via a bus; the memory stores program instructions that can be executed by the processor, and the processor can execute the exhibition hall integrated central control demonstration method based on local area network communication according to Embodiment 1 or any possible implementation thereof by calling the program instructions.

[0084] Specifically, a processor can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor that reads software code stored in memory. This memory can be integrated into the processor or located outside the processor and exist independently.

[0085] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0086] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0087] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A method for integrated central control demonstration in exhibition halls based on local area network communication, characterized in that: include: The central control terminal and designated demonstration devices are connected to the exhibition hall switch via network cables or AP devices to form a local area network environment. The designated demonstration devices include projector devices, voice interactive screens, and splicing screens. The designated demonstration device exposes its own control interface through an HTTP server. The control interface of the central control terminal for the designated demonstration device is invoked, and the control commands of the central control terminal are sent to the control interface of the designated demonstration device via the HTTP protocol. The designated demonstration device presents control content through a preset application, and the designated demonstration device returns the control results to the central control terminal, thereby realizing the control interaction between the central control terminal and the designated demonstration device; The central control terminal is invoked to access the monitoring configuration interface, through which the monitoring IP and port of the specified demonstration device are configured; When the designated presentation device is a projector, the designated presentation device controls the content presentation through a preset Windows desktop application; When the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application; When the designated demonstration device is a large video wall, the designated demonstration device controls the content presentation through a preset Windows desktop application or Android application. When the designated demonstration device is a projector or a large video wall, a Windows computer is used to project the Windows desktop application onto the projector or large video wall via an HDMI interface.

2. The exhibition hall integrated central control demonstration method based on local area network communication according to claim 1, characterized in that, The system receives touch operations from the user on the central control terminal, invokes the page switching component on the central control terminal, and switches the page of the designated demonstration device through the page switching component. The system receives touch operations from the user on the central control terminal, invokes the video control component on the central control terminal, and uses the video control component to play, pause, or replay the video on the designated demonstration device. The system receives touch operations from the user on the central control terminal, invokes the image control component on the central control terminal, and switches images on the designated demonstration device through the image control component.

3. The exhibition hall integrated central control demonstration method based on local area network communication according to claim 1, characterized in that, The voice control interaction component of the central control terminal is invoked to receive voice control operation commands from the user for the designated demonstration device. The user can then use these voice control operation commands to switch pages, play, pause, or replay videos, and switch images on the designated demonstration device.

4. An integrated control and demonstration device for exhibition halls based on local area network (LAN) communication, employing the integrated control and demonstration method for exhibition halls based on LAN communication as described in any one of claims 1-3, characterized in that... include: The local area network (LAN) module is used to connect the central control terminal and designated demonstration devices to the exhibition hall switch via network cables or AP devices to form a LAN environment. The designated demonstration devices include projectors, voice-interactive large screens, and splicing large screens. The control interface exposure module is used to expose the control interface of the specified demonstration device itself through an HTTP server. The control command issuing module is used to call the control interface of the central control terminal for the designated demonstration device, and send the control commands of the central control terminal to the control interface of the designated demonstration device via the HTTP protocol; The control result display module is used to present the control content of the designated demonstration device through a preset application. The control result feedback module is used for the designated demonstration device to return the control result to the central control terminal, thereby realizing the control interaction between the central control terminal and the designated demonstration device.

5. The integrated control and demonstration device for exhibition halls based on local area network communication according to claim 4, characterized in that, It also includes a monitoring configuration module, which is used to call the central control terminal to access the monitoring configuration interface and configure the monitoring IP and port of the specified demonstration device through the monitoring configuration interface.

6. The exhibition hall integrated central control demonstration device based on local area network communication according to claim 4, characterized in that, In the control result display module: When the designated presentation device is a projector, the designated presentation device controls the content presentation through a preset Windows desktop application; When the designated demonstration device is a voice-interactive large screen, the designated demonstration device controls the content presentation through a preset Windows desktop application; When the designated demonstration device is a large video wall, the designated demonstration device controls the content presentation through a preset Windows desktop application or Android application. When the designated demonstration device is a projector or a large video wall, a Windows computer is used to project the Windows desktop application onto the projector or large video wall via an HDMI interface.

7. The integrated control and demonstration device for exhibition halls based on local area network communication according to claim 4, characterized in that, The control result display module includes: The page switching submodule is used to receive the user's touch operation on the central control terminal, call the page switching component on the central control terminal, and switch the page of the specified demonstration device through the page switching component; The video control submodule is used to receive touch operations from the user on the central control terminal, call the video control component on the central control terminal, and use the video control component to play, pause, or replay the video on the designated demonstration device. The image switching submodule is used to receive the user's touch operation on the central control terminal, call the image control component on the central control terminal, and switch the image of the specified demonstration device through the image control component; It also includes a voice control module, which is used to call the voice control interaction component of the central control terminal, receive voice control operation commands from the user on the designated demonstration device through the voice control interaction component, and perform page switching, video playback, pause or replay, and image switching on the designated demonstration device through voice control operation commands.

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