3D multi-role conference system based on virtual reality

Abstract

The utility model discloses a 3D multi-role conference system based on virtual reality, the system comprises a conference projection device, a cloud server and a plurality of conference VR devices, the conference projection device is in communication connection with the cloud server through a first communication module, and the plurality of conference VR devices are respectively in communication connection with the cloud server through respective second communication modules; the conference projection equipment is placed on any plane, collects conference interaction information of a first conference object, and transmits the conference interaction information to the cloud server; the plurality of conference VR devices are worn by a plurality of second conference objects, collect conference interaction information of the plurality of second conference objects and transmit the conference interaction information to the cloud server; and the cloud server generates a virtual conference environment, so that a plurality of virtual objects corresponding to the first conference object and the plurality of second conference objects realize interaction in the virtual conference environment based on respective conference interaction information. The reality sense and the immersion sense of the teleconference are enhanced, and the communication efficiency and the conference efficiency of the teleconference of participants are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of virtual reality, and in particular to a 3D multi-role conference system based on virtual reality. Background Art

[0002] With the development of globalization and Internet technology, remote meetings have become an important way of business communication and corporate training. Due to distance issues, remote meetings cannot be conducted offline, and telephone conferences also have communication efficiency issues, so online remote meetings have become a popular trend. However, the online remote meetings currently used can only provide a flat communication interface, lacking the sense of reality and immersion brought by face-to-face communication in offline meetings, and also have problems with low communication efficiency and low meeting efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the lack of reality and immersion brought by face-to-face communication in the prior art, as well as the problems of low communication efficiency and low meeting efficiency, thereby providing a 3D multi-role conference system based on virtual reality.

[0004] The utility model provides a 3D multi-role conference system based on virtual reality, which includes a conference projection device, a cloud server and multiple conference VR devices. The conference projection device is connected to the cloud server through a first communication module, and the multiple conference VR devices are connected to the cloud server through their respective second communication modules.

[0005] The conference projection device is placed on any plane to collect the conference interaction information of the first conference object and transmit it to the cloud server;

[0006] The plurality of conference VR devices are worn by the plurality of second conference objects, and are used to collect conference interaction information of the plurality of second conference objects, and transmit the information to the cloud server;

[0007] The cloud server is used to generate a virtual conference environment, so that the first conference object and multiple virtual objects corresponding to the multiple second conference objects can interact in the virtual conference environment based on their respective conference interaction information.

[0008] The utility model can be placed on any plane through the conference projection equipment, and multiple second conference objects can join the meeting only by wearing their own VR equipment, which reduces the space limitation and makes the remote meeting more flexible and convenient. The second conference objects can enter the virtual meeting environment through the conference VR equipment, which enhances the realism and immersion of the remote meeting, thereby improving the communication efficiency and meeting efficiency of the first conference object and multiple second conference objects in the remote meeting.

[0009] In an optional implementation, the conference projection device includes a main control board, which is embedded in the conference projection device and is used to control functions of the conference projection device.

[0010] The utility model controls all functions of the conference projection equipment through the main control board of the conference projection equipment.

[0011] In an optional embodiment, the conference projection device also includes a high-definition camera, a depth camera and a first microphone, the high-definition camera is connected to the first camera interface of the main control board through a first connecting line, the depth camera is connected to the second camera interface of the main control board through a second connecting line, and the first microphone is connected to the microphone interface of the main control board through a third connecting line;

[0012] The high-definition camera is used to collect text information, picture information and video information;

[0013] The depth camera is used to collect facial information of the first meeting object;

[0014] The first microphone is used to collect voice information of the first conference partner.

[0015] The utility model collects conference interaction information of a first conference object through a high-definition camera, a depth camera and a first microphone, so that the first conference object can interact in a virtual conference environment based on the conference interaction information.

[0016] In an optional implementation, the conference projection device further includes a functional touch panel, and the functional touch panel is connected to the functional touch panel interface of the main control board via a fourth connecting line;

[0017] The function touch panel is used to enable the main control panel to control the conference projection device to execute a corresponding function based on a pressing operation of any function of the function touch panel using the first conference object.

[0018] The utility model can quickly respond to the pressing operation of the first conference object and instantly transmit it to the main control board through the functional touch panel of the conference projection device, thereby quickly executing the corresponding function, reducing operation delays, and allowing the meeting to be conducted more efficiently.

[0019] In an optional implementation, the conference projection device further includes a speaker, which is disposed in a housing of the conference projection device and connected to a speaker interface of the main control board via a fifth connecting line;

[0020] Speakers are used to amplify voice volume in a virtual meeting environment.

[0021] The utility model amplifies the volume through the speaker of the conference projection device to enhance the experience of the remote conference.

[0022] In an optional implementation, any conference VR device includes a display screen, a camera, and a second microphone;

[0023] The display screen is used to display the virtual conference environment generated by the cloud server;

[0024] The camera is used to collect facial information of the second conference object using the conference VR device;

[0025] The second microphone is used to collect voice information of the second conference partner.

[0026] The utility model collects conference interaction information of the second conference object through the display screen, camera and second microphone of the conference VR device, so that the second conference object can interact in the virtual conference environment based on the conference interaction information.

[0027] In an optional implementation, the conference VR device is provided with a plurality of function keys, so that the second conference object can interact in the virtual conference environment by operating the function keys.

[0028] The utility model uses the function keys of the conference VR device to enable the second conference object to execute the interactive functions corresponding to the function keys in the virtual conference environment, thereby improving the experience of the remote conference and enhancing the immersion and reality.

[0029] In an optional implementation, the cloud server includes a verification module and a storage module;

[0030] The verification module is used to verify whether the first conference object and the plurality of second conference objects can access the virtual conference environment;

[0031] The storage module is used to store conference resources of the conference.

[0032] The utility model verifies the qualification of accessing the virtual conference environment through the verification module of the cloud server, thereby enhancing the security of the remote conference, and stores the conference resources through the storage module, thereby being able to quickly and conveniently provide the virtual conference environment with conference resources to improve the conference efficiency.

[0033] In an optional embodiment, the conference projection device further includes a driving board and an optical machine, the driving board is connected to the main control board via a focus motor connection line, a first signal circuit board and a power line, and the optical machine is connected to the main control board via a second signal circuit board and a light source lamp connection line;

[0034] The driver board is used to analyze the video signal of the main control board and drive the optical machine;

[0035] The optical machine is used to project the conference resources provided by the cloud server onto a preset plane.

[0036] The utility model drives the optical machine through the driving plate of the conference projection device, so that the optical machine can project the conference resources of the cloud server to a preset plane, so that the first conference object can interact with the conference resources of the preset plane.

[0037] In an optional embodiment, the conference projection device further includes an infrared camera and an infrared grating, the infrared camera is connected to the third camera interface of the main control board via a sixth connecting line, and the infrared grating is connected to the infrared grating interface of the main control board via a laser extension line;

[0038] The infrared camera and the infrared grating are used to collect the hand movement information of the first conference partner on the preset plane.

[0039] The utility model collects hand motion information in conference interaction information of a first conference object through an infrared camera combined with an infrared grating, so that the first conference object can interact in a virtual conference environment based on the hand motion information. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the utility model. For ordinary technicians in this field, the detailed technical solutions of this embodiment can be known based on these drawings without paying any creative work.

[0041] Figure 1 It is a block diagram of the overall connection structure of a 3D multi-role conference system based on virtual reality provided by an embodiment of the utility model;

[0042] Figure 2 It is a schematic diagram of a conference projection device provided by an embodiment of the utility model;

[0043] Figure 3 It is a flow chart of a method for conducting a remote conference using a 3D multi-role conference system based on virtual reality provided by an embodiment of the utility model;

[0044] Figure 4 is a schematic diagram of a virtual character selection interface provided by an embodiment of the utility model;

[0045] Figure 5 is a schematic diagram of a conference room selection interface provided by an embodiment of the present utility model;

[0046] Figure 6 It is a schematic diagram of a conference application background provided by an embodiment of the present utility model;

[0047] Figure 7 is a schematic diagram of a virtual course interface provided by an embodiment of the utility model;

[0048] Figure 8 It is a schematic diagram of a live course interface provided by an embodiment of the present utility model;

[0049] Fig. 9 It is a schematic diagram of the recorded course interface provided by the embodiment of the utility model;

[0050] Fig.10 is a schematic diagram of a virtual conference environment provided by an embodiment of the present utility model;

[0051] Fig.11 It is a schematic diagram of a conference resource management interface provided by an embodiment of the present utility model.

[0052] Description of Reference Numerals

[0053] 1. Conference projection equipment; 11. First communication module; 12. Main control board; 13. High-definition camera; 14. Depth camera; 15. First microphone; 16. First camera interface; 17. Second camera interface; 18. Microphone interface; 19. Functional touchpad; 110. Functional touchpad interface; 111. Speaker; 112. Speaker interface; 113. Driver board; 114. Optical machine; 115. Infrared camera; 116. Third camera interface; 117. Infrared grating; 118. Infrared grating interface; 2. Cloud server; 21. Verification module; 22. Storage module; 3. Conference VR equipment; 31. Second communication module; 32. Display screen; 33. Camera; 34. Second microphone. DETAILED DESCRIPTION

[0054] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] In the description of the present utility model, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] Remote meetings have become an important way of business communication and corporate training. Existing online remote meetings can only provide a flat communication interface, lacking the sense of reality and immersion brought by face-to-face communication in offline meetings, resulting in low communication efficiency and low meeting efficiency.

[0057] The present invention provides a 3D multi-role conference system based on virtual reality. Figure 1As shown, the system includes a conference projection device 1, a cloud server 2 and multiple conference VR devices 3. The conference projection device 1 is connected to the cloud server 2 through a first communication module 11, and the multiple conference VR devices 3 are connected to the cloud server 2 through their respective second communication modules 31; the conference projection device 1 is placed on any plane, and is used to collect conference interaction information of the first conference object, and transmit it to the cloud server 2; the multiple conference VR devices 3 are worn by multiple second conference objects, and are used to collect conference interaction information of the multiple second conference objects, and transmit it to the cloud server 2; the cloud server 2 is used to generate a virtual conference environment, so that the multiple virtual objects corresponding to the first conference object and the multiple second conference objects can interact in the virtual conference environment based on their respective conference interaction information.

[0058] Specifically, the conference VR device 3 can be any existing VR device or a combination of multiple VR devices. The present invention takes the conference VR device 3 as a combination of a VR helmet and a VR handle as an example for explanation. The first communication module 11 and the second communication module 31 can use wired communication or wireless communication to realize the communication connection between the conference projection device 1 and the conference VR device 3 and the cloud server 2.

[0059] In one embodiment, if Figure 1 As shown, the conference projection device 1 includes a main control board 12 , which is embedded in the conference projection device 1 and used to control the functions of the conference projection device 1 .

[0060] Specifically, the main control board 12 includes hardware devices such as a main control chip, memory particles, an EMMC (Embedded MultiMediaCard) chip, and a power management chip. The main control board 12 is connected to other parts of the conference projection device 1 through multiple connecting lines and multiple interfaces to control all functions of the conference projection device 1.

[0061] In one embodiment, if Figure 1 As shown, the conference projection device 1 also includes a high-definition camera 13, a depth camera 14 and a first microphone 15. The high-definition camera 13 is connected to the first camera interface 16 of the main control board 12 through a first connecting line, the depth camera 14 is connected to the second camera interface 17 of the main control board 12 through a second connecting line, and the first microphone 15 is connected to the microphone interface 18 of the main control board 12 through a third connecting line; the high-definition camera 13 is used to collect text information, picture information and video information; the depth camera 14 is used to collect facial information of the first conference object; the first microphone 15 is used to collect voice information of the first conference object.

[0062] Specifically, the information collected by the high-definition camera 13 is displayed in the virtual conference environment, the facial information collected by the depth camera 14 corresponds to the facial movements of the virtual character corresponding to the first conference object, and the voice information collected by the first microphone 15 is played in the virtual conference environment, so that the first conference object can interact in the virtual conference environment based on the conference interaction information.

[0063] In one embodiment, if Figure 1 As shown, the conference projection device 1 also includes a function touch panel 19, which is connected to the function touch panel interface 110 of the main control panel 12 via a fourth connecting line; the function touch panel 19 is used to enable the main control panel 12 to control the conference projection device 1 to perform the corresponding function based on a pressing operation on any function of the function touch panel 19 using the first conference object.

[0064] Specifically, the function touch panel 19 is located in the outer shell of the conference projection device 1. The first conference object can directly select a function through the function touch panel 19, so that the conference projection device 1 can quickly respond to the pressing operation of the first conference object and immediately transmit it to the main control board 12, thereby quickly executing the corresponding function, reducing operation delays, and allowing the meeting to be conducted more efficiently.

[0065] In one embodiment, if Figure 1 As shown, the conference projection device 1 also includes a speaker 111, which is arranged in the housing of the conference projection device 1 and connected to the speaker interface 112 of the main control board 12 through a fifth connecting line; the speaker 111 is used to amplify the voice volume of the virtual conference environment.

[0066] Specifically, the volume is amplified by the speaker 111 to enhance the remote conference experience.

[0067] In one embodiment, if Figure 1 As shown, any conference VR device 3 includes a display screen 32, a camera 33 and a second microphone 34; the display screen 32 is used to display the virtual conference environment generated by the cloud server 2; the camera 33 is used to collect facial information of the second conference object using the conference VR device 3; and the second microphone 34 is used to collect voice information of the second conference object.

[0068] Specifically, if the conference VR device 3 is a combination of a VR helmet and a VR handle, the virtual conference environment is displayed on the display screen 32 of the VR helmet, the facial information collected by the camera 33 built into the VR helmet corresponds to the facial movements of the virtual character corresponding to the second conference object, and the voice information collected by the second microphone 34 built into the VR helmet is played in the virtual conference environment, so that the second conference object can interact in the virtual conference environment based on the conference interaction information.

[0069] In one embodiment, the conference VR device 3 is provided with a plurality of function keys, so that the second conference object can interact in the virtual conference environment by operating the function keys.

[0070] Specifically, the second conference object can perform the interactive function corresponding to the function button in the virtual conference environment by operating the function button of the VR handle in the conference VR device 3. For example, the second conference object operates the hand-raising button on the VR handle, and the virtual character corresponding to the second conference object raises his hand in the virtual conference environment.

[0071] In one embodiment, if Figure 1 As shown, the cloud server 2 includes a verification module 21 and a storage module 22; the verification module 21 is used to verify whether the first conference object and multiple second conference objects can access the virtual conference environment; the storage module 22 is used to store conference resources of the conference.

[0072] Specifically, the verification module 21 performs face verification on the first conference object through the facial information of the first conference object collected by the depth camera 14 of the conference projection device 1. Similarly, the verification module 21 performs face verification on the second conference object through the facial information of the second conference object collected by the camera 33 of the conference VR device 3 to verify the qualification of accessing the virtual conference environment, thereby enhancing the security of the remote conference. The storage module 22 stores conference resources, such as videos, pictures, documents, etc. required for the meeting uploaded in advance by the first conference object or the second conference object, as well as conference data after each meeting.

[0073] In one embodiment, if Figure 1 As shown, the conference projection device 1 also includes a driving board 113 and an optical machine 114. The driving board 113 is connected to the main control board 12 via a focusing motor connection line, a first signal circuit board and a power line, and the optical machine 114 is connected to the main control board 12 via a second signal circuit board and a light source lamp connection line; the driving board 113 is used to parse the video signal of the main control board 12 and drive the optical machine 114; the optical machine 114 is used to project the conference resources provided by the cloud server 2 onto a preset plane.

[0074] Specifically, assuming that the conference projection device 1 is placed on the desktop, the first conference object can sit at the table, and the optical machine 114 projects the conference resources onto the desktop. At this time, the first conference object can directly point, draw, and perform other hand operations on the projection on the desktop, or write text, draw, and perform other operations at the position covered by the projection. The virtual character corresponding to the first conference object will perform corresponding actions in the virtual conference environment and display the content of the writing and drawing of the first conference object, so that there is no need to additionally configure a blackboard or other demonstration board, and projection can be performed at any location and the virtual conference environment can be joined, which improves the convenience of starting a remote meeting.

[0075] In one embodiment, if Figure 1 As shown, the conference projection device 1 also includes an infrared camera 115 and an infrared grating 117. The infrared camera 115 is connected to the third camera interface 116 of the main control board 12 via a sixth connecting line, and the infrared grating 117 is connected to the infrared grating interface 118 of the main control board 12 via a laser extension line; the infrared camera 115 and the infrared grating 117 are used to collect hand movement information of the first conference object on the preset plane.

[0076] Specifically, the hand motion information of the first conference partner is collected through the infrared camera 115 in combination with the infrared grating 117, so that the first conference partner can interact in the virtual conference environment based on the hand motion information.

[0077] In one embodiment, Figure 2 is a schematic diagram of a conference projection device provided by an embodiment of the utility model, Figure 2 The figure shows part of the structure of the conference projection device 1: the main control board 12, the high-definition camera 13, the depth camera 14, the speaker 111, the optical machine 114, the infrared camera 115 and the infrared grating 117, and other parts Figure 2 By Figure 2 The conference projection device 1 shown, combined with the cloud server 2 and the conference VR device 3, forms a 3D multi-role conference system based on virtual reality, which can improve the immersion and reality of remote conferences, thereby improving the efficiency of the conference.

[0078] In one embodiment, Figure 3 This is a flow chart of a method for conducting a remote conference using a 3D multi-role conference system based on virtual reality provided by an embodiment of the utility model, which can be implemented by the following steps:

[0079] Step S1, cloud server 2 deploys server-side components of conference applications. Specifically, cloud server 2 can deploy server-side components of conference applications, such as self-built or using a third-party cloud conference service, so that the first conference object can directly access the conference application running on cloud server 2 through conference projection device 1, and the second conference object can directly access the conference application running on cloud server 2 through conference VR device 3, and join the remote conference without maintaining the local server, and cloud server 2 provides stable communication conference services for the first conference object and multiple second conference objects.

[0080] In step S2, the cloud server 2 authenticates the first conference object and multiple second conference objects. Specifically, the cloud server 2 includes a verification module 21, which can perform face verification through the facial information of the first conference object collected by the depth camera 14 in the conference projection device 1, and perform face verification through the facial information of the second conference object collected by the camera 33 in the conference VR device 3. After the verification is passed, the first conference object and the second conference object can log in to the conference application.

[0081] Step S3, the first conference object enters the virtual conference environment. Specifically, the first conference object can use the VR device in combination with the conference projection device 1 to participate in the remote virtual conference. The conference projection device 1 projects the conference resources provided by the cloud server 2 onto a preset plane, and collects the hand movement information of the first conference object through the infrared camera 115 and the infrared grating 117 in the conference projection device 1, so that the virtual character corresponding to the first conference object can make corresponding actions in the virtual conference environment. The first conference object can use the VR device to view the virtual conference environment and operate in the conference application provided by the cloud server 2. Figure 4 It is a schematic diagram of a virtual character selection interface provided by an embodiment of the utility model. After the face verification of the first conference object is passed, the virtual character displayed in the virtual conference environment can be selected through the VR device. Figure 5 1 is a schematic diagram of a conference room selection interface provided by an embodiment of the present utility model. After the first conference object selects a virtual character, the conference room can be selected through a VR device. When the first conference object selects a conference room, the cloud server 2 generates a virtual conference environment corresponding to the conference room.

[0082] Step S4: multiple second conference objects enter the virtual conference environment. Specifically, Figure 6 It is a schematic diagram of the conference application background provided by an embodiment of the utility model. Taking the conference application background of the second conference object A and applying the conference application for course learning as an example, the conference application background can be displayed on the display screen 32 of the conference VR device 3 of the second conference object A. The second conference object A can watch it through a VR helmet and make selections through a VR handle. Figure 7 : is a schematic diagram of a virtual course interface provided by an embodiment of the present utility model. When the second conference participant A selects a virtual course through the VR handle, the display screen 32 of the VR helmet will display the following Figure 7 As shown in the content, the second conference object A can be selected through the VR handle. Figure 8 is a schematic diagram of a live course interface provided by an embodiment of the utility model, Fig. 9 : is a schematic diagram of the recorded course interface provided by the embodiment of the utility model. When the second conference participant A selects the live training through the VR handle, the display screen 32 of the VR helmet will display the following Figure 8 or Fig. 9 As shown in the content, the second conference object A can use the VR handle to select between live courses and recorded courses. Fig.10This is a schematic diagram of the virtual conference environment provided by the embodiment of the utility model. When the second conference object A selects any live course, if the live course already has a virtual conference environment, the cloud server 2 directly sends the virtual conference environment and the multiple virtual characters stored in the storage module 22 to the conference VR device 3 of the second conference object A. The second conference object A can send expressions, apply for speaking, switch perspectives, etc. in the virtual conference environment through the VR handle. Figure 4 As shown, the second conference object A can select a virtual character through the VR handle before entering the virtual conference environment. When the second conference object A chooses to exit through the VR handle, the cloud server 2 automatically saves the video and data information of this course and stores it in the storage module 22.

[0083] In one embodiment, if the second conference object A is Figure 7 In the interface shown, any recorded course is selected, and the cloud server 2 can send the course resources corresponding to the recorded course stored in the storage module 22 to the conference VR device 3 used by the second conference object A, and the second conference object A can watch it through the display screen 32 of the conference VR device 3. Optionally, the recording viewing time of the second conference object A can be sent to the cloud server 2 through the second communication module 31, so that the cloud server 2 can perform statistics and analysis.

[0084] Step S5, the first conference object and multiple second conference objects interact in the virtual conference environment. Specifically, the first conference object can view conference resources, mute or exit through VR devices in the virtual conference environment. The first conference object interacts with multiple second conference objects in the virtual conference environment, such as viewing a list of second conference objects, agreeing to the second conference object's speech application, and viewing the second conference object's emoticons, etc., so that although it is a remote meeting, the sense of reality and immersion brought by the three-dimensional conference environment can be achieved. Optionally, the first conference object can also communicate with the cloud server 2 through any terminal, upload the resources required for the meeting, such as videos, PPTs, pictures, music, and 3D models, to the cloud server 2 and store them in the storage module 22, so that they can be called in time when the meeting needs them. In addition, Fig.11 is a schematic diagram of a conference resource management interface provided by an embodiment of the present utility model, wherein a first conference object enters a virtual conference environment through a VR device. Fig.11 The conference resource editing page shown enables the first conference object to add, edit, and delete the conference resources of the current conference.

[0085] The utility model can be placed on any plane through the conference projection equipment, and multiple second conference objects can join the meeting only by wearing their own VR equipment, which reduces the space limitation and makes remote conference more flexible and convenient. The second conference objects can enter the virtual conference environment through the conference VR equipment, which enhances the realism and immersion of the online remote conference, thereby improving the communication efficiency and meeting efficiency of the first conference object and multiple second conference objects in the remote conference.

[0086] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A 3D multi-role conference system based on virtual reality, characterized in that: The system includes a conference projection device, a cloud server and a plurality of conference VR devices, wherein the conference projection device is connected to the cloud server through a first communication module, and the plurality of conference VR devices are connected to the cloud server through respective second communication modules; The conference projection device is placed on any plane, and is used to collect conference interaction information of the first conference object and transmit it to the cloud server; The multiple conference VR devices are worn by multiple second conference objects, and are used to collect conference interaction information of the multiple second conference objects and transmit it to the cloud server; The cloud server is used to generate a virtual conference environment, so that the first conference object and the multiple virtual objects corresponding to the multiple second conference objects can interact in the virtual conference environment based on their respective conference interaction information.

2. The 3D multi-role conference system based on virtual reality according to claim 1 is characterized in that: The conference projection device comprises a main control board, which is embedded in the conference projection device and is used to control functions of the conference projection device.

3. The 3D multi-role conference system based on virtual reality according to claim 2 is characterized in that: The conference projection device also includes a high-definition camera, a depth camera and a first microphone, the high-definition camera is connected to the first camera interface of the main control board through a first connecting line, the depth camera is connected to the second camera interface of the main control board through a second connecting line, and the first microphone is connected to the microphone interface of the main control board through a third connecting line; The high-definition camera is used to collect text information, picture information and video information; The depth camera is used to collect facial information of the first conference object; The first microphone is used to collect voice information of the first conference partner.

4. The 3D multi-role conference system based on virtual reality according to claim 2 is characterized in that: The conference projection device further includes a functional touch panel, and the functional touch panel is connected to the functional touch panel interface of the main control panel via a fourth connecting line; The function touch panel is used to enable the main control panel to control the conference projection device to execute a corresponding function based on a pressing operation of any function of the function touch panel using the first conference object.

5. The 3D multi-role conference system based on virtual reality according to claim 2 is characterized in that: The conference projection device further includes a speaker, which is disposed on a housing of the conference projection device and connected to a speaker interface of the main control board via a fifth connecting line; The loudspeaker is used to amplify the voice volume of the virtual conference environment.

6. The 3D multi-role conference system based on virtual reality according to claim 1 is characterized in that: Any conference VR device includes a display, a camera, and a second microphone; The display screen is used to display the virtual conference environment generated by the cloud server; The camera is used to collect facial information of a second conference partner using the conference VR device; The second microphone is used to collect voice information of the second conference partner.

7. The 3D multi-role conference system based on virtual reality according to claim 6 is characterized in that: The conference VR device is provided with a plurality of function keys, so that the second conference object can interact in the virtual conference environment by operating the function keys.

8. The 3D multi-role conference system based on virtual reality according to claim 2 is characterized in that: The cloud server includes a verification module and a storage module; The verification module is used to verify whether the first conference object and the plurality of second conference objects can access the virtual conference environment; The storage module is used to store conference resources of the conference.

9. The 3D multi-role conference system based on virtual reality according to claim 8, characterized in that: The conference projection device also includes a driving board and an optical machine, wherein the driving board is connected to the main control board via a focus motor connection line, a first signal circuit board and a power line, and the optical machine is connected to the main control board via a second signal circuit board and a light source lamp connection line; The driving board is used to analyze the video signal of the main control board and drive the optical machine; The optical machine is used to project the conference resources provided by the cloud server onto a preset plane.

10. The 3D multi-role conference system based on virtual reality according to claim 9, characterized in that: The conference projection device also includes an infrared camera and an infrared grating, wherein the infrared camera is connected to the third camera interface of the main control board via a sixth connecting line, and the infrared grating is connected to the infrared grating interface of the main control board via a laser extension line; The infrared camera and the infrared grating are used to collect hand movement information of the first conference partner on the preset plane.

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