Unmanned aerial vehicle aerial video interaction platform

Abstract

The invention discloses an unmanned aerial vehicle aerial video interaction platform which comprises an unmanned aerial vehicle end and a ground control end. The unmanned aerial vehicle end is provided with a polygon prism folding type regional display module, an audio and video acquisition module, a communication module and a main control module; the ground control end comprises a mode management module, a content editing module and an AI analysis module. The polygon prism folding type display module is composed of a foldable polygon prism frame, a regional display soft screen and a driving mechanism, the frame can be switched between a plane unfolding state and a polygon prism folding state, the soft screen is synchronously folded or unfolded along with deformation of the frame, each region corresponds to a polygon prism vertical face during folding, and content can be displayed on the whole face or in a regional mode during unfolding; the driving mechanism controls frame form switching; and the main control module dynamically distributes display contents according to the framework form. The platform is suitable for scenes such as public safety, emergency rescue, military actions and commercial propaganda, and the problems that an existing unmanned aerial vehicle display platform is fixed in form, insufficient in interaction and screen splitting capacity, poor in wind resistance and the like are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to an aerial video interaction platform for unmanned aerial vehicles, which is applicable to scenarios such as public security, emergency rescue, military operations, and commercial publicity. Background Art

[0002] With the rapid development of unmanned aerial vehicle technology, its applications in fields such as advertising, event performances, and information transmission are becoming increasingly widespread. The current display systems carried by unmanned aerial vehicles mainly adopt fixed multi-screen layouts or simple mechanical adjustment structures. Although they can display basic information, the following significant defects exist in actual applications: (1) Lack the ability to display large-size dynamic visual information, and the display form is solidified and direction-limited. For example, the utility model patent with the publication number CN216902104U discloses a display device. By arranging multiple display screens opposite to each other in pairs to cover different directions, although the display angle is expanded, the screen form is fixed, and it cannot be dynamically folded or unfolded, resulting in large flight resistance and inability to adapt to changing task requirements. Moreover, the independent design of multiple screens significantly increases the weight and hardware cost, and the complexity of collaborative control is high; (2) Insufficient ability for zoned display. For example, the utility model patent with the publication number CN204926753U discloses a multi-rotor advertising delivery device. By rotating the screen angle with a two-degree-of-freedom robotic arm, although the display direction can be flexibly adjusted, it relies on a physical drive mechanism and cannot achieve dynamic zoned control of a single flexible screen. Moreover, no matter how it rotates, there are always some angles where the screen display content cannot be observed. Another example is the utility model patent with the publication number CN205862770U, which discloses an aerial display screen carried by an unmanned aerial vehicle. By rotating an LED line array to form a virtual screen, the resolution is limited and the content cannot be switched in real time, making it difficult to meet the requirements of high-precision interaction; (3) Imbalance between wind resistance performance and energy efficiency. For example, the multi-screen layout of the display device disclosed in the utility model patent with the publication number CN216902104U results in a large windward area and relatively large wind resistance, significantly shortening the battery life; (4) Insufficient economy and scene adaptability. For example, the utility model patent with the publication number CN209249043U discloses a towed unmanned aerial vehicle aerial advertising system, which relies on multiple unmanned aerial vehicles to tow a large advertising screen. The equipment procurement and coordination costs are high (the cost of a single mission increases by 2-3 times), and the poor wind resistance results in frequent returns, with low operation and maintenance efficiency; (5) Separation of the audio-video interaction system, insufficient real-time performance, and single visual performance. Due to the solidified form of the display device in the existing solutions, only planar content can be presented, lacking three-dimensional multi-dimensional visual impact. For example, when folded into a multi-prism, it is impossible to synchronously switch the content of each facade, limiting its application value in scenarios such as large-scale events and emergency command.

[0003] In summary, it is difficult for the existing technologies to balance functional flexibility, environmental adaptability and economy. There is an urgent need for a drone display system that integrates dynamic form switching, regional display and wind resistance optimization. Further innovation is required to overcome these limitations and break through the technical bottlenecks of multi-scenario applications. Summary of the Invention

[0004] Based on the above deficiencies of the existing technologies, the purpose of the present invention is to provide a drone air video interaction platform to solve the problems existing in the existing drone display systems, such as fixed form, insufficient interaction and split-screen capabilities, poor wind resistance performance and low economy.

[0005] The technical solution of the present invention lies in an aerial video interaction platform for drones, which includes a drone end and a ground control end. Specifically: The drone end includes a drone and a multi-prism folding sub-region display module, an audio-video acquisition module, a communication module, a main control module, a sound amplification and noise reduction module, an environmental perception module, a power and flight control module, and an expansion interface module mounted on the drone; The drone end includes a multi-prism folding sub-region display module, an audio-video acquisition module, a communication module, and a main control module. The multi-prism folding sub-region display module includes a foldable multi-prism frame, a sub-region display flexible screen, and a driving mechanism. The foldable multi-prism frame is composed of several rod bodies and connectors and can dynamically switch between a planar unfolded state and a multi-prism folded state; The sub-region display flexible screen is arranged on the outer side of the foldable multi-prism frame and folds or unfolds synchronously with the deformation of the foldable multi-prism frame. The sub-region display flexible screen is divided into multiple independently controlled regions. When folded, each region corresponds to an elevation of the multi-prism, and when unfolded, it can display content as a whole surface or in sub-regions; The driving mechanism is used to drive the articulated mechanism of the foldable multi-prism frame to rotate to switch its form; The foldable flexible screen control module is connected to the driving mechanism and the sub-region display flexible screen, and dynamically distributes the display content of each region according to the form signal of the foldable multi-prism frame; The audio-video acquisition module includes a multi-directional camera array and a directional microphone array, which are used to collect environmental audio-video data in real time; The communication module supports dual-band Wi-Fi and cellular network redundant communication, and is used to interact commands and data with the ground control end; The sound amplification and noise reduction module adopts a high-power directional speaker + RNNoise noise reduction algorithm, dynamically adjusts the output frequency band, receives the audio instructions of the main control module, and plays the screen content synchronously; The environmental perception module integrates a barometer, an anemometer, and an IMU, and monitors the flight environment data in real time; It feeds back environmental data to the main control module and can trigger the automatic folding of the multi-prism folding sub-region display module to resist the wind; The power and flight control is based on the stable hovering and formation control of PX4 flight control, and supports multi-aircraft cooperation; The expansion interface module adopts a standardized interface and supports additional psychological warfare devices such as smoke generators and laser projectors. The peripherals are plug-and-play, enhancing the application ability of the drone in special tasks. For example, in psychological warfare, by means of displaying specific patterns, releasing smoke or projecting lasers, etc., it can generate psychological deterrence to the target and improve the combat effectiveness; The main control module is configured to receive ground instructions and coordinate the adjustment of the screen form, audio-video acquisition and rendering, environmental perception, and flight control.

[0006] The ground control terminal includes a user interaction module, a content editing module, a mode management module, a communication module, and an AI analysis module. The user interaction module provides a graphical operation interface, supports functions such as mode selection, content editing, real-time monitoring, and instruction issuing, can receive user input, and can send control instructions and data streams to the communication module. The content editing module is used to generate dynamic visual content and voice instructions, supports dynamic visual content editing and voice synthesis, interacts with the user interface to obtain editing instructions, and outputs the content to the communication module for transmission to the drone. The mode management module pre-sets a deterrence mode, a negotiation mode, and an information broadcast mode, supports one-key switching and synchronously adjusts the screen form and audio-visual strategy of the drone side. The communication module manages the redundant communication links of dual-band WIFI and cellular networks to ensure the stability of data transmission, sends control instructions and content data to the drone side, and receives the audio-visual stream and status information returned by the drone. The AI analysis module performs target group emotion analysis on the audio-visual data returned by the drone and feeds back mode switching suggestions.

[0007] The drone side and the ground control terminal achieve two-way data interaction through a wireless communication link, and the form switching of the foldable polyhedron frame and the playback of audio-visual content are controlled in real time by ground instructions.

[0008] Preferably, the redundant communication link of the communication module adopts dynamic frequency hopping technology, including: the main link is 5.8GHz Wi-Fi, dedicated to the transmission of audio-visual streams; the backup link is a 5G cellular network, dedicated to the transmission of control instructions; when signal interference is detected, it automatically switches to the backup link and adjusts the transmission frequency band.

[0009] Preferably, the scenario mode switching of the mode management module includes the following cooperation strategies: in the deterrence mode, the full screen flashes frequently to display a preset deterrence image, and a directional amplified sound alarm is played synchronously; in the negotiation mode, it switches to a single plane to display static text, and the voice noise reduction and two-way intercom functions are started; in the information broadcast mode, the video content is played in a loop, and the expansion module is synchronously driven to release smoke or project a laser.

[0010] Preferably, the emotion recognition function of the AI analysis module captures the limb movements and facial expressions of the target group through a camera, analyzes the emotion state using a spatio-temporal attention neural network model, and then pushes mode switching suggestions to the ground control terminal according to the analysis results.

[0011] Preferably, the content editing module of the ground control terminal supports text-to-speech synthesis and is matched in real time with the screen display content; and a multi-layer overlay editing function, allowing dynamic insertion of preset slogans, real-time video streams, or geofence information.

[0012] Preferably, the noise reduction and synchronization method of the audio-visual acquisition module includes: using beamforming technology to directionally enhance the target sound source; compressing the audio-visual stream by a hardware encoder and adding timestamps; after the ground control terminal receives the data, aligning the audio-visual content based on the timestamps and rendering and playing.

[0013] Preferably, the UAV aerial video interaction platform supports multi-aircraft formation cooperation, including: realizing formation flight control through a distributed consensus algorithm; multi-aircraft screen splicing display to form an aerial information matrix; dynamic deployment of relay UAVs to enhance the formation communication coverage and stability.

[0014] Preferably, the cross bars and vertical bars on the left and right sides of the foldable multi-prism frame are connected to each other through connectors, and two adjacent cross bars are rotationally connected through a hinge mechanism, and the corresponding upper and lower hinge mechanisms are connected to each other through a vertical bar.

[0015] Preferably, the driving mechanism is installed on the rod body beside the hinge mechanism, and there is a transmission connection between the power output end of the driving mechanism and the power input end of the hinge mechanism, so as to drive the hinge mechanism to rotate, so that the foldable multi-prism frame can dynamically switch between the planar unfolded state and the multi-prism folded state.

[0016] Preferably, the hinge mechanism includes a first hinge body, a hinge shaft and a second hinge body. The first hinge body is provided with a first horizontal connection end for connecting with the cross bar, a first vertical connection end for connecting with the vertical bar, and a first hinge shaft connection end for connecting with the hinge shaft. The first vertical connection end and the first hinge shaft connection end are opposite up and down, and the first horizontal connection end is located beside the first vertical connection end and the first hinge shaft; the second hinge body is provided with a second horizontal connection end for connecting with the cross bar, a vertical shaft hole for sleeving the hinge shaft, and a power input end for transmission connection with the driving mechanism; the lower end of the hinge shaft is fixedly connected with the first hinge shaft connection end of the first hinge body, the middle part of the hinge shaft is sleeved in the shaft holes of the first hinge body and the second hinge body, and a transmission mechanism is installed at the upper end of the hinge shaft.

[0017] Preferably, a connection part is arranged around the sub-region display flexible screen, and the connection part is detachably connected with the foldable multi-prism frame.

[0018] Preferably, the several rod bodies are lightweight hollow rod bodies, preferably made of carbon fiber rods.

[0019] Preferably, the main control module includes a sensor and an electromagnet. The sensor and the electromagnet are installed at the edges on the left and right sides of the foldable multi-prism frame. The sensor is used to detect the folded-in place state of the foldable multi-prism frame. Preferably, the sensor is a Hall sensor, and the electromagnet is used to make the folding of the foldable multi-prism frame accurate and stable.

[0020] Preferably, the main control module includes an expansion interface module for carrying additional psychological warfare devices such as a smoke generator and a laser projector.

[0021] Preferably, a connection mechanism for interconnecting with a drone is provided in the middle of the upper side of the foldable polyhedron frame.

[0022] Preferably, the connection mechanism includes a rod connector, an intermediate connecting rod, and a hinge seat. The rod connector is installed in the middle of the upper side of the foldable polyhedron frame. Both ends of the intermediate connecting rod are fixedly connected to the swing rod of the rod connector and the hinge seat respectively. The seat plate of the hinge seat is interconnected with the drone.

[0023] Advantages of the present invention: (1) The present invention can achieve multi-angle and diversified display. By disposing the sub-region display soft screen on the outer side surface of the foldable polyhedron frame that can be deformed into a polyhedron, the soft screen on each prism surface can display different contents (such as text, images, video streams) in sub-regions. In this way, the drone can display different text, video, or image information to ground observers in different directions in the air, that is, synchronously transmit differentiated information to ground observers in different directions, realizing "one screen with multiple uses", greatly enriching the display content and form, significantly improving the information coverage efficiency, meeting diversified publicity and display requirements, and being applicable to multi-scenarios such as military deterrence, emergency command, various large-scale activities, and advertising placement.

[0024] (2) The present invention has higher wind resistance. The morphological design of the polyhedron is beneficial to reducing wind resistance. When the foldable polyhedron frame is deformed into a polyhedron frame, its structure is more compact, which can effectively reduce the windward area and air resistance, thereby improving the stability and wind resistance of the drone during flight, extending the endurance time, and enhancing the applicability in complex environments.

[0025] (3) The present invention has higher portability and flexibility. The design of the foldable polyhedron frame enables the entire display device to be folded into a smaller volume when not in use. It is mainly connected by screw joints, which are easy to assemble and disassemble, convenient for carrying and transportation. At the same time, this foldable and deformable structure also enables the drone to better adapt to the application requirements in different scenarios, improving the flexibility and practicality of the device. In addition, the easy disassembly and assembly structure of the foldable polyhedron frame makes it very convenient to quickly deploy or store on-site. Users can quickly assemble a complete display system according to actual needs, or quickly disassemble it after use, saving time and labor costs.

[0026] (4) The present invention has a stronger visual impact and publicity effect. The deformation process of the foldable multi-prism frame and the sub-region display soft screen thereon can achieve a dynamic display effect, which can attract more attention. By displaying different contents on different prism surfaces and the audio-visual acquisition and display systems working in coordination to form a complete information interaction closed-loop, a more three-dimensional and rich visual effect can be created, further enhancing the effects of deterrence, psychological warfare, publicity, and display, and being applicable to multiple scenarios such as military deterrence, emergency command, various large-scale activities, and advertising placement.

[0027] (5) The present invention is conducive to reducing costs and resource consumption. Compared with traditional methods such as multi-UAV formation performances, the present invention can achieve diverse display effects by a single UAV carrying a foldable multi-prism frame and a soft screen, reducing the number of required UAVs and equipment costs. At the same time, due to the improved wind resistance and extended endurance time, energy consumption and operating costs are also reduced.

[0028] (6) The present invention has stronger customization and expandability capabilities. The modular design of the present invention allows the size and shape of the frame body to be adjusted according to specific requirements. By increasing or decreasing the number of horizontal bars and vertical bars, or replacing connectors of different specifications, a display frame suitable for a specific scenario can be easily customized, and even the frame can be expanded when needed to adapt to a larger display screen.

[0029] (7) The present invention facilitates maintenance and component replacement. When a certain component of the foldable multi-prism frame is damaged, due to its easy disassembly and assembly characteristics, the damaged component can be quickly located and replaced without the need for large-scale repair of the entire frame, reducing maintenance costs and equipment downtime.

[0030] (8) The present invention can adapt to diverse environments. The foldable structure significantly reduces wind resistance and improves the stability of the UAV in bad weather. The dynamic form adjustment function can automatically optimize the display state according to environmental conditions, and the easy disassembly and assembly frame structure can better adapt to the special requirements of different sites. Whether it is indoor or outdoor activities, or in places with limited space, the assembly method of the frame can be flexibly adjusted to ensure the display effect while meeting the site constraints, enhancing the reliability and continuous operation ability of the system in complex environments.

[0031] (9) The present invention is conducive to reducing transportation costs. During transportation, the disassembled frame body occupies less space, facilitating packaging and transportation, and reducing transportation costs and logistics complexity.

[0032] (10) The present invention can perform intelligent scene adaptation. Preset multiple working modes (deterrence, negotiation, broadcast, etc.), support one-key switching, and the AI analysis module can optimize the information display strategy in real time to achieve the upgrade from passive display to intelligent interaction.

[0033] These technical advantages make this platform significantly superior to traditional UAV display systems in terms of functionality, adaptability, and economy, and can meet the diverse needs in modern complex scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the UAV aerial video interaction platform in Embodiment 1.

[0035] Figure 2 It is a schematic structural diagram of the multi-prism folding sub-region display module in Embodiment 1.

[0036] Figure 3 It is a schematic structural diagram of the connecting mechanism in Embodiment 1.

[0037] Figure 4 It is a schematic structural diagram of the driving mechanism and the hinge mechanism in Embodiment 1.

[0038] Figure 5 It is a schematic structural diagram of the multi-prism folding sub-region display module in Embodiment 2.

[0039] Figure 6 It is a schematic structural diagram of the hinge mechanism without a power input end for the second hinge body in Embodiment 2.

[0040] In the figure: 1 - foldable multi-prism frame, 2 - sub-region display flexible screen, 3 - driving mechanism, 4 - foldable flexible screen control module, 5 - UAV, 6 - connecting mechanism, 7 - hinge mechanism; 1.1 - cross bar, 1.2 - vertical bar, 1.3 - connecting piece; 2.1 - connecting part, 2.2 - stud connecting piece, 2.3 - oblong hole; 3.1 - servo mount, 3.2 - servo, 3.3 - servo gear, 3.4 - rotating gear; 4.1 - sensor, 4.2 - electromagnet; 6.1 - rod body connecting piece, 6.2 - intermediate connecting rod, 6.3 - hinge seat, 6.31 - swing rod, 6.32 - seat body plate; 7.1 - first hinge body, 7.2 - hinge shaft, 7.3 - second hinge body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] In order to enable those of ordinary skill in the art to understand the technical content of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Embodiment 1 As Figure 1 shown, a UAV aerial video interaction platform includes a UAV end and a ground control end, where: The drone side includes a drone and a multi-prism folding sub-region display module, an audio-video acquisition module, a communication module, a main control module, a sound amplification and noise reduction module, an environmental perception module, a power and flight control module, and an expansion interface module mounted on the drone. The audio-video acquisition module includes an omnidirectional camera array and a directional microphone array for real-time acquisition of environmental audio-video data; the communication module supports dual-band Wi-Fi and cellular network (4G / 5G) redundant communication for interacting instructions and data with the ground control end; the sound amplification and noise reduction module uses a high-power directional speaker + RNNoise noise reduction algorithm to dynamically adjust the output frequency band, receives audio instructions (such as deterrence alarms) from the main control module, and plays the synchronized screen content; the environmental perception module integrates a barometer, an anemometer, and an IMU to real-time monitor flight environment data, feedback environmental data (such as wind speed) to the main control module, and can trigger the multi-prism folding sub-region display module to automatically fold for wind resistance; the power and flight control is based on PX4 flight control for stable hovering and formation control, supporting multi-aircraft collaboration; the expansion interface module uses a standardized interface (RS485 / CAN bus), supports additional psychological warfare devices such as smoke generators and laser projectors, and the peripherals are plug-and-play, enhancing the application ability of the drone in special tasks. For example, in psychological warfare, by means of displaying specific patterns, releasing smoke, or projecting lasers, etc., it generates psychological deterrence to the target and improves the combat effectiveness; the main control module is configured to receive ground instructions, coordinate screen form adjustment, audio-video acquisition and rendering, environmental perception, and flight control.

[0043] The ground control end includes a user interaction module, a content editing module, a mode management module, a communication module, and an AI analysis module. The user interaction module provides a graphical operation interface, supports functions such as mode selection, content editing, real-time monitoring, and instruction issuance, can receive user inputs (mode switching, content editing), and can send control instructions and data streams to the communication module; the content editing module is used to generate dynamic visual content and voice instructions, supports the editing of dynamic visual content (videos, texts, pictures) and voice synthesis (TTS), interacts with the user interface to obtain editing instructions, and outputs the content to the communication module for transmission to the drone; the mode management module pre-sets deterrence mode, negotiation mode, and information broadcast mode, supports one-key switching and synchronously adjusts the screen form and audio-video strategy of the drone side; the communication module manages dual-band (2.4GHz / 5.8GHz) and 4G / 5G redundant communication links to ensure data transmission stability, sends control instructions and content data to the drone side, and receives the audio-video stream and status information returned by the drone; the AI analysis module performs target group emotion analysis on the audio-video data returned by the drone and gives feedback on mode switching suggestions.

[0044] The drone terminal and the ground control terminal achieve two-way data interaction through a wireless communication link, and the form switching of the foldable polyhedron framework and the playback of audio and video content are controlled in real time by ground instructions.

[0045] The redundant communication link of the communication module adopts dynamic frequency hopping technology, including: the main link is 5.8GHz Wi-Fi, dedicated to the transmission of audio and video streams; the backup link is a 5G cellular network, dedicated to the transmission of control instructions; when signal interference is detected, it automatically switches to the backup link and adjusts the transmission frequency band.

[0046] The scenario mode switching of the mode management module includes the following collaborative strategies: in the deterrence mode, a preset deterrence image is displayed with full-screen high-frequency flashing, and a directional amplified sound alarm is played synchronously; in the negotiation mode, it switches to a single-plane display of static text, and the voice noise reduction and two-way intercom functions are activated; in the information broadcast mode, video content is played in a loop, and the expansion module is synchronously driven to release smoke or project a laser.

[0047] The emotion recognition function of the AI analysis module captures the body movements and facial expressions of the target group through a camera, analyzes the emotional state (panic, calm, confrontation) using a spatio-temporal attention neural network model, and then pushes mode switching suggestions (such as switching from the deterrence mode to the negotiation mode) to the ground control terminal according to the analysis results.

[0048] The content editing module of the ground control terminal supports: text-to-speech (TTS) synthesis, which is matched in real time with the screen display content; a multi-layer overlay editing function that allows dynamic insertion of preset slogans, real-time video streams, or geofence information.

[0049] The noise reduction and synchronization method of the audio and video acquisition module includes: using beamforming technology to enhance the target sound source directionally; compressing the audio and video stream and adding time stamps through a hardware encoder (H.265); after the ground control terminal receives the data, it aligns the audio and video content based on the time stamps and renders and plays it.

[0050] The drone aerial video interaction platform supports multi-aircraft formation cooperation, realizes formation flight control through a distributed consensus algorithm; multi-aircraft screen splicing display to form an aerial information matrix; relay drone dynamic deployment to enhance the formation communication coverage and stability.

[0051] As Figure 2 、 Figure 3 and Figure 4As shown in the figure, this embodiment provides a multi-prism foldable sub-region display module, which mainly includes a foldable multi-prism frame 1, a sub-region display flexible screen 2, a driving mechanism 3, and a foldable flexible screen control module 4. The foldable multi-prism frame 1 is composed of several rod bodies and connectors, and can dynamically switch between a planar unfolded state and a multi-prism folded state. The arrow direction in the figure indicates the general direction of the transformation from the planar unfolded state to the multi-prism folded state. The sub-region display flexible screen 2 is arranged on the outer side of the foldable multi-prism frame 1, and folds or unfolds synchronously with the deformation of the foldable multi-prism frame 1, and is divided into multiple independent control regions. The driving mechanism 3 is used to drive the morphological switching of the foldable multi-prism frame 1, and the foldable flexible screen control module 4 dynamically distributes the display content of each region according to the morphological signal of the foldable multi-prism frame 1. The foldable flexible screen control module 4 is installed on the unmanned aerial vehicle 5.

[0052] In this embodiment, a triangular prism is taken as an example for illustration. If it is necessary to fold into a quadrangular prism, a pentagonal prism, etc., only by increasing the corresponding number of rod segments and spare parts according to the same logic, the foldable display of different prism morphologies can be realized to meet diverse display requirements.

[0053] As Figure 1 、 Figure 2 and Figure 3 shown, the foldable multi-prism frame 1 is a foldable triangular prism frame composed of six equal-length cross bars 1.1, four equal-length vertical bars 1.2, and connectors (including right-angle connectors 1.3 and hinge mechanisms 7). The cross bars 1.1 and vertical bars 1.2 on the left and right sides of the foldable multi-prism frame 1 are connected to each other through the connector 1.3. The two adjacent cross bars are rotationally connected through the hinge mechanism 7, and the two corresponding hinge mechanisms 7 above and below are connected to each other through the vertical bar 1.2. The cross bar 1.1 and the vertical bar 1.2 are preferably made of lightweight hollow carbon fiber rods to reduce the overall weight and improve the flight performance of the unmanned aerial vehicle. A connection mechanism 6 is arranged in the middle of the upper side of the foldable multi-prism frame 1 for connecting with the unmanned aerial vehicle 5. The connection mechanism 6 includes a rod connector 6.1, an intermediate connecting rod 6.2, and a hinge seat 6.3. The two ends of the intermediate connecting rod 6.2 are respectively fixedly connected to the swing rod 6.31 of the rod connector 6.1 and the hinge seat 6.3. The seat plate 6.32 of the hinge seat 6.3 is connected to the unmanned aerial vehicle 5 to ensure the stable installation and disassembly of the foldable multi-prism frame 1 on the unmanned aerial vehicle 5.

[0054] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, the driving mechanism 3 is installed on the cross bar 1.1 beside the hinged mechanism 7, and is drivingly connected between the power output end and the power input end of the hinged mechanism. Specifically, the driving mechanism 3 includes a servo mounting base 3.1 and a servo 3.2 mounted on the servo mounting base 3.1. The transmission mechanism includes a servo gear 3.3 and a rotating gear 3.4 that mesh with each other. The servo gear 3.3 is installed on the output shaft of the servo 3.2 and rotates with the output shaft of the servo 3.2. The rotating gear 3.4 is sleeved on the upper end of the hinge shaft 7.2 and rotates synchronously with the power input end of the second hinge body 7.3, thereby driving the hinged mechanism 7 to rotate and realizing the dynamic switching of the foldable prism frame 1 between the planar unfolded state and the prism folded state.

[0055] As Figure 1 , Figure 2 and Figure 3 shown in the figure, the hinged mechanism 7 is a key component for realizing the morphological switching of the foldable prism frame 1, and is composed of a first hinge body 7.1, a hinge shaft 7.2 and a second hinge body 7.3. The first hinge body 7.1 is provided with a first horizontal connection end for connecting with the cross bar 1.1, a first vertical connection end for connecting with the vertical bar 1.2, and a first hinge shaft connection end for connecting with the hinge shaft 7.2, wherein the first vertical connection end and the first hinge shaft connection end are opposite to each other up and down, and the first horizontal connection end is located beside the first vertical connection end and the first hinge shaft. The second hinge body 7.3 is provided with a second horizontal connection end for connecting with the cross bar 1.1, a vertical shaft hole for sleeving the hinge shaft 7.2, and a power input end for drivingly connecting with the driving mechanism 3. The lower end of the hinge shaft 7.2 is fixedly connected to the first hinge shaft connection end of the first hinge body, the middle part is sleeved on the shaft holes of the first hinge body 7.1 and the second hinge body 7.2, and the upper end is provided with a transmission mechanism (i.e., the servo gear 3.3 and the rotating gear 3.4). Through the power transmission of the driving mechanism 3, the hinged mechanism 7 is driven to rotate, and further the morphology of the foldable prism frame 1 is changed.

[0056] As Figure 1 shown in the figure, a connecting part 2.1 is provided around the divided area display soft screen 2, and is detachably connected to the periphery of the foldable prism frame 1 through a stud connector 2.2. Long circular holes 2.3 are provided on the periphery of the foldable prism frame 1, and the stud connectors 2.2 on the periphery of the divided area display soft screen are respectively inserted into the long circular holes 2.3, providing a deformation margin for the divided area display soft screen 2 to follow the folding deformation of the foldable prism frame 1 and avoiding excessive pulling and damage to the divided area display soft screen 2.

[0057] As Figure 1As shown in the figure, the foldable flexible screen control module 4 is connected to the driving mechanism 3 and the sub-region display flexible screen 2, and is responsible for dynamically allocating the display content of each region according to the morphological signals of the foldable polygonal prism frame 1. The foldable flexible screen control module 4 includes a sensor 4.1 and an electromagnet 4.2, which are installed at the edges on the left and right sides of the foldable polygonal prism frame 1. The sensor 4.1 is used to detect whether the folding of the frame is in place, and preferably a Hall sensor is used to accurately judge the morphological state of the frame; the electromagnet 4.2 is used to ensure that the folding process of the frame is accurate and stable, and to avoid deviations during morphological switching caused by external forces or vibrations.

[0058] By integrating foldable flexible screen display, multi-directional audio and video collection and remote control technologies, and carried by an unmanned aerial vehicle, an aerial foldable screen interaction terminal is constructed to achieve: (1) Dynamic deterrence: Customized visual content is displayed through a foldable flexible screen. When deterrence in multiple directions is required, the screen can be folded into a triangular prism or other polygonal prisms, and different contents can be displayed on the vertical surfaces of each prism; when deterrence in only a single direction is required, the prism can be unfolded into a single plane; (2) Real-time attack and defense: Two-way audio and video intercom, supporting psychological tactics and emergency communication; (3) Environmental adaptation: The wind-resistant flexible screen foldable structure can fold the screen to reduce wind resistance when the wind is strong. It solves the problem of the single function of traditional unmanned aerial vehicles in real-time interaction scenarios, improves the accuracy and deterrence of information transmission in complex environments, and provides a modular and expandable aerial interaction platform for public safety and military operations.

[0059] Embodiment 2 As Figure 5 and Figure 6 As shown in the figure, the multi-prism foldable sub-region display module provided in this embodiment is substantially the same as that in Embodiment 1, and the main difference is that: in this embodiment, an articulated mechanism 7 with a power input end is provided between two adjacent crossbars on the upper side of the foldable polygonal prism frame 1, and an articulated mechanism 7 without a power input end is provided between two adjacent crossbars on the lower side of the foldable polygonal prism frame 1, and the length of the hinge shaft 7.2 is also shortened.

[0060] In summary, the multi-prism foldable sub-region display module of this embodiment realizes flexible morphological switching, accurate sub-region display, good wind resistance performance and economy of the unmanned aerial vehicle display system through reasonable design and selected materials, providing strong support for the diversified applications of unmanned aerial vehicles in complex environments.

[0061] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An aerial video interaction platform for drones, comprising a drone end and a ground control end, characterized in that: The drone end includes a multi-prism folding sub-region display module, an audio-video acquisition module, a communication module and a main control module, where: The multi-prism folding sub-region display module includes a foldable multi-prism frame, a sub-region display soft screen and a driving mechanism. The foldable multi-prism frame is composed of several rod bodies and connectors and can dynamically switch between a planar unfolded state and a multi-prism folded state; the sub-region display soft screen is arranged on the outer side of the foldable multi-prism frame and folds or unfolds synchronously with the deformation of the foldable multi-prism frame. The sub-region display soft screen is divided into multiple independently controllable regions. When folded, each region corresponds to one facade of the multi-prism, and when unfolded, it can display content on the whole surface or in sub-regions; the driving mechanism is used to drive the hinge mechanism of the foldable multi-prism frame to rotate to switch its form; the foldable soft screen control module is connected to the driving mechanism and the sub-region display soft screen, and dynamically distributes the display content of each region according to the form signal of the foldable multi-prism frame; The audio-video acquisition module includes a multi-directional camera array and a directional microphone array for real-time acquisition of ambient audio-video data; The communication module is used to interact commands and data with the ground control end; The main control module is configured to receive ground commands and coordinate screen form adjustment, audio-video acquisition and rendering, environmental perception and flight control; The ground control end includes a mode management module, a content editing module and an AI analysis module, where: The mode management module pre-sets a deterrence mode, a negotiation mode and an information broadcast mode, supports one-key switching and synchronously adjusts the screen form and audio-video strategy of the drone end; The content editing module is used to generate dynamic visual content and voice commands; The AI analysis module performs target group emotion analysis on the audio-video data transmitted back by the drone and feeds back mode switching suggestions; The drone end and the ground control end achieve two-way data interaction through a wireless communication link, and the form switching of the foldable multi-prism frame and the playback of audio-video content are controlled in real time by ground commands.

2. The drone aerial video interaction platform according to claim 1, wherein: The horizontal bars and vertical bars on the left and right sides of the foldable multi-prism frame are connected to each other through connectors, and two adjacent horizontal bars are rotationally connected through a hinge mechanism. The corresponding upper and lower hinge mechanisms are connected to each other through vertical bars.

3. The UAV aerial video interaction platform according to claim 1 or 2, characterized in that: The driving mechanism is installed on the rod body beside the hinge mechanism, and there is a transmission connection between the power output end of the driving mechanism and the power input end of the hinge mechanism, so as to drive the hinge mechanism to rotate, so that the foldable multi-prism frame can dynamically switch between a planar unfolded state and a multi-prism folded state.

4. The drone aerial video interaction platform according to claim 1, wherein: The articulated mechanism includes a first articulated body, an articulated shaft, and a second articulated body. The first articulated body is provided with a first lateral connection end for connecting with the cross bar, a first vertical connection end for connecting with the vertical bar, and a first articulated shaft connection end for connecting with the articulated shaft. The first vertical connection end and the first articulated shaft connection end are vertically opposite to each other, and the first lateral connection end is located at the side part of the first vertical connection end and the first articulated shaft. The second articulated body is provided with a second lateral connection end for connecting with the cross bar, a vertical shaft hole for sleeving the articulated shaft, and a power input end for driving connection with the driving mechanism. The lower end of the articulated shaft is fixedly connected to the first articulated shaft connection end of the first articulated body. The middle part of the articulated shaft is sleeved in the shaft holes of the first articulated body and the second articulated body, and a transmission mechanism is installed at the upper end part of the articulated shaft.

5. The drone aerial video interaction platform according to claim 1, wherein: A connection part is arranged around the area-divided display flexible screen, and the connection part is detachably connected with the foldable polygonal prism frame.

6. The UAV aerial video interaction platform according to claim 1, wherein: The several rod bodies are lightweight hollow rod members.

7. The drone aerial video interaction platform according to claim 1, wherein: The foldable flexible screen control module includes a sensor and an electromagnet. The sensor and the electromagnet are installed at the left and right side edges of the foldable polygonal prism frame. The sensor is used to detect the folded-in-place state of the foldable polygonal prism frame, and the electromagnet is used to make the folding of the foldable polygonal prism frame accurate and stable.

8. The drone aerial video interaction platform according to claim 1, characterized in that: The main control module includes an expansion interface module for carrying a smoke generator and a laser projector.

9. The drone aerial video interaction platform according to claim 1, wherein: A connection mechanism for connecting with a drone is arranged in the middle of the upper side of the foldable polygonal prism frame. The connection mechanism includes a rod body connector, an intermediate connecting rod, and a hinge seat. The rod body connector is installed in the middle of the upper side of the foldable polygonal prism frame. The two ends of the intermediate connecting rod are respectively fixedly connected to the swing rod of the rod body connector and the hinge seat. The seat body plate of the hinge seat is connected with the drone.

10. A multi-prism folding sub-region display module, comprising a foldable multi-prism frame, a sub-region display flexible screen and a driving mechanism, characterized in that: The foldable polygonal prism frame is composed of several rod bodies and connectors, and can dynamically switch between a planar unfolded state and a polygonal prism folded state. The area-divided display flexible screen is arranged on the outer side surface of the foldable polygonal prism frame and folds or unfolds synchronously with the deformation of the foldable polygonal prism frame. The area-divided display flexible screen is divided into multiple independently controlled areas. When folded, each area corresponds to one vertical surface of the polygonal prism, and when unfolded, it can display content on the whole surface or display content in areas. The driving mechanism is used to drive the articulated mechanism of the foldable polygonal prism frame to rotate to switch its form. The foldable flexible screen control module is connected to the driving mechanism and the area-divided display flexible screen, and dynamically distributes the display content of each area according to the form signal of the foldable polygonal prism frame.

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