Road condition dangerous case early warning system and method

Abstract

The invention provides a road condition dangerous case early warning system and method, and the system comprises a flight moving assembly, a display assembly and a positioning and fixing assembly, a lower guide assembly is preset on the side of a road, and when a dangerous case occurs on the road, an electronic display screen is carried by an unmanned aerial vehicle to fly to the lower guide assembly close to the position of the road where the dangerous case occurs; and rapid road danger early warning is realized through the electronic display screen, so that further expansion of the road danger is avoided. And meanwhile, the electronic display screen adopts a retractable structure and is matched with the display screen adopting the display cloth, so that the wind resistance can be effectively reduced when the unmanned aerial vehicle carries the electronic display screen to fly, and the cruising ability of the unmanned aerial vehicle carrying a battery is improved. Furthermore, after the electronic display screen is unfolded, the electronic display screen can be better kept in a plane state in a magnetic attraction mode, and therefore the dangerous case early warning display effect of the electronic display screen is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic emergency command, and in particular to a road condition dangerous situation early warning system and method. Background Art

[0002] When dangerous situations occur on national first- and second-class highways, such as mudslides, landslides, mountain torrents or collapses, if the dangerous situation is not promptly warned to the vehicles behind, it is easy to cause the vehicles behind on the dangerous road to fall into greater danger or danger, which can easily lead to vehicles in danger. However, in uninhabited areas or sparsely populated areas, since the corresponding road maintenance stations are relatively far apart, if the road where the dangerous situation occurs is far away from the traffic station, it will be difficult to quickly and promptly warn the vehicles in the direction of the dangerous road. Therefore, a system that can achieve rapid response and realize road condition dangerous situation warning is needed, which can provide early warning and warning effects in time when dangerous situations occur on the road to avoid further expansion of the dangerous situation. Summary of the invention

[0003] In order to solve the problem that the existing technology cannot timely provide warnings of dangerous road conditions.

[0004] The technical solution of the present invention: Provided is a road condition warning system, comprising: A flying mobile assembly, the flying mobile assembly comprising a connecting support frame and a drone connected to the upper end of the connecting support frame, the drone being used to carry the connecting support frame to achieve flight; A display assembly, the display assembly is connected to the lower end of the connecting support frame, and the display assembly includes an electronic display screen; A positioning and fixing assembly, the positioning and fixing assembly comprises an upper positioning assembly and a lower guide assembly, a plurality of the lower guide assemblies are arranged at intervals along the road direction, the upper end of the upper positioning assembly is fixedly connected to the lower end of the connecting support frame, the lower end of the upper positioning assembly can be inserted into the inner side of the lower guide assembly along the upper end of the lower guide assembly and the upper positioning assembly and the lower guide assembly are mutually clamped on a horizontal plane; The electronic display screen includes a retracted state and an expanded state. The plane occupied area of ​​the display screen when in the expanded state is larger than the plane occupied area of ​​the display screen when in the retracted state. The electronic display screen is in the retracted state before the upper positioning assembly and the lower guiding assembly are connected to each other.

[0005] Preferably, in a road condition hazard warning system of the present invention, the lower end of the upper positioning component includes an elastic telescopic rod, and when the upper positioning component is connected to the lower guide component, the lower end of the elastic telescopic rod at the lower end of the upper positioning component is inserted into the inner side of the lower guide component.

[0006] Preferably, in the road condition danger warning system of the present invention, the elastic telescopic rod is a multi-stage telescopic structure.

[0007] Preferably, in a road condition hazard warning system of the present invention, a guide opening is provided at the upper end of the lower guide assembly, and the guide opening is wider at the top and lower at the bottom.

[0008] Preferably, in a road condition hazard warning system of the present invention, the display component includes a folding storage component, and the folding storage component is connected to the electronic display screen for controlling the electronic display screen to switch between a contracted state and an expanded state.

[0009] Preferably, in a road condition hazard warning system of the present invention, the folding storage component includes an inflatable ring, the inflatable ring is used to be filled with compressed gas, and the electronic display screen is in an unfolded state when the compressed gas is filled in the inflatable ring.

[0010] Preferably, in a road condition hazard warning system of the present invention, the folding and storing component includes a folding component, and the electronic display screen is stored in a ring shape in the folding component when in a contracted state.

[0011] Preferably, the present invention provides a road condition hazard warning system, wherein the folding component includes a folding support frame and a folding middle bracket rotatably connected to its end, the folding middle bracket is rotatably connected to a folding side bracket at one end away from the folding support frame; the lower end of the folding support frame is connected to a middle storage tube, the lower end of the folding side bracket is connected to a side storage tube, the upper ends of the electronic display screens are connected to the middle storage tube and the side storage tubes, and the electronic display screen is stored in a ring shape in the middle storage tube and the side storage tubes when in a contracted state.

[0012] Preferably, in a road condition hazard warning system of the present invention, a middle connecting tube is connected to a position of the lower end of the electronic display screen opposite to the middle storage tube, a side connecting tube is connected to a position of the lower end of the electronic display screen opposite to the side storage tube, an elastic connecting rod is connected between the middle connecting tube and the side connecting tube, and the elastic connecting rod is made of a flexible and bendable material.

[0013] Preferably, in a road condition hazard warning system of the present invention, the lower end of the electronic display screen is connected to a magnetic attraction portion that can be magnetically attracted, and the positioning component also includes a magnet. When the electronic display screen is in the unfolded state, the magnetic attraction portion at the lower end is magnetically attracted to the magnet.

[0014] A road condition warning method is also provided, and the specific steps include: Step S1: Real-time monitoring of road conditions. When a road hazard occurs, an alarm is issued through the road hazard control command center to activate the early warning system; Step S2, remotely control the flying mobile component to fly to the dangerous position of the road, and remotely control the upper positioning component to connect with the lower guide component at one end of the dangerous road in the direction of the oncoming vehicle; Step S3, controlling the unfolding of the electronic display screen so that the electronic display screen changes from a contracted state to an unfolded state, and displaying the dangerous situation at the front end of the road on the electronic display screen, and displaying warning information to oncoming vehicles on the road.

[0015] Preferably, in a method for warning of dangerous road conditions of the present invention, after the control of unfolding the electronic display screen in step S3, the magnetic attraction portion at the lower end of the electronic display screen is magnetically attracted to the magnet of the positioning assembly when the electronic display screen is in the unfolded state.

[0016] Beneficial effects of the present invention: The road condition hazard warning system and method of the present invention is provided with a flying mobile component, a display component and a positioning fixed component. By presetting a lower guide component on the side of the road, when a road hazard occurs, an electronic display screen is carried by a drone and flown to the lower guide component close to the road position where the hazard occurs, and connected, and the electronic display screen is used to quickly affect the road hazard warning, thereby avoiding further expansion of the road hazard. At the same time, the electronic display screen adopts a retractable structure, so that the drone can effectively reduce wind resistance when carrying it for flight, thereby improving the battery life of the drone. Furthermore, after the electronic display screen is unfolded, the electronic display screen can be better maintained in a flat state through magnetic attraction, thereby ensuring the effect of its hazard warning display. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a road condition warning system according to the present invention; Figure 2 This is a schematic diagram of the explosion structure of a road condition danger warning system of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning and fixing components of a road condition danger warning system of the present invention when they are docked; Figure 4 It is a schematic diagram of the side structure of a road condition danger warning system of the present invention when the positioning and fixing components are docked; Figure 5 It is a schematic diagram of the three-dimensional structure of the positioning and fixing components of a road condition danger warning system after docking according to the present invention; Figure 6 It is a side structural diagram of the docking of positioning and fixing components of a road condition danger warning system of the present invention; Figure 7 It is a schematic diagram of the structure of a foldable storage component of a road condition warning system when it is half-opened; Figure 8This is a schematic diagram of the structure of a foldable storage component of a road condition warning system of the present invention when it is fully opened; Fig. 9 It is a schematic diagram of the structure when the folding storage component is collapsed; Fig.10 This is a schematic diagram of the structure when the folding storage component is half opened; Fig.11 This is a schematic diagram of the structure when the folding storage component is fully opened; Fig.12 It is a schematic diagram of the structure when the foldable storage assembly is fully opened and the electronic display screen is unfolded; Fig.13 A schematic diagram of the unfolded structure when the foldable storage assembly includes an inflatable ring; Fig.14 It is a schematic diagram of the cross-sectional structure of the unfolded folding storage assembly including the inflatable ring; Names and serial numbers in the figure: 11. UAV; 12. Connecting support frame; 21. Electronic display screen; 221. Folding support frame; 222. Folding middle support frame; 223. Folding side support frame; 231. Middle storage tube; 232. Side storage tube; 241. Middle connecting tube; 242. Elastic connecting rod; 243. Side connecting tube; 31. Upper positioning assembly; 41. Lower guide assembly; 411. Guide port; 26. Inflatable ring. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0019] The present invention provides a road condition danger warning system, which can be used for emergency warning when a danger occurs on a road such as a highway, so as to remind vehicles behind to pay attention to safety or stop in time in the road danger, so as to avoid a series of secondary accidents caused by the road danger. Figures 1 to 8 As shown, a road condition warning system of the present invention includes a flying mobile component, a display component and a positioning and fixing component. Specifically, the flying component mainly provides the system with flying power to ensure that the system can reach the road danger in time and timely reach the warning or alarm. The display component is used to display the road danger warning content, and the positioning and fixing component mainly fixes the system on the road where the danger occurs to ensure that the system can stably and reliably play a warning effect.

[0020] The flying mobile component includes a connecting support frame 12 and a drone 11 connected to the upper end of the connecting support frame 12. The drone 11 is used to carry the connecting support frame 12 to achieve flight, that is, by controlling the drone 11 to fly, the connecting support frame 12 can be carried to fly together, so that the system can be carried together with the connecting support frame 12 to connect related components. Specifically, the connecting support frame 12 can adopt a frame structure made of lightweight materials, such as aluminum alloy or carbon fiber material. While ensuring the structural strength of the connecting support frame 12, the connecting support frame 12 can have a lighter weight to reduce its burden on the drone 11, so that the drone 11 has better controllability, thereby ensuring that the system is more stable and reliable when implementing road hazard warnings. Among them, the drone 11 can use the more mature multi-rotor drone 11 currently on the market, that is, by adopting a multi-rotor structure to fully ensure the implementation of the system for road hazard warnings.

[0021] The system also includes a display component, which is connected to the lower end of the connecting support frame 12, and the display component includes an electronic display screen 21. The electronic display screen 21 can be a foldable display screen, or a retractable display screen such as a curtain structure, so that the electronic display screen 21 can be easily retracted so that it occupies a smaller volume when not in use, so that it is convenient to use the drone 11 to carry various functional components of the system to implement road condition warning arrangements.

[0022] The present system also includes a positioning and fixing component, which includes an upper positioning component 31 and a lower guide component 41. Several lower guide components 41 are arranged at intervals along the road direction, such as being arranged on the side of the road or being arranged based on the original road signs or signboards. The upper end of the upper positioning component 31 is fixedly connected to the lower end of the connecting support frame 12, and the lower end of the upper positioning component 31 can be inserted into the inner side of the lower guide component 41 along the upper end of the lower guide component 41 so that the upper positioning component 31 and the lower guide component 41 are mutually engaged in the horizontal plane. The lower guide component 41 is a hollow structure in the shape of a circular tube, so that the lower end of the upper positioning component 31 can be inserted into the inner side of the lower guide component 41, so that the upper positioning component 31 and the lower guide component 41 are mutually engaged in the structure, thereby restricting each other's movement in the horizontal direction. That is, Figures 2 to 4 FIG. 4 is a schematic diagram showing the structure when the upper positioning assembly 31 and the lower guide assembly 41 are separated from each other. Figures 5 to 8 The figure shows a structural schematic diagram of the upper positioning component 31 and the lower guide component 41 when they are interconnected, that is, they are also mutually nested. At this time, the lower end of the upper positioning component 31 is inserted into the lower guide component 41 so that the upper positioning component 31 and the lower guide component 41 are in a mutually nested structure, thereby completing the connection between the upper positioning component 31 and the lower guide component 41.

[0023] The electronic display screen 21 includes a retracted state and an expanded state. The plane occupied area of ​​the display screen when it is in the expanded state is larger than the plane occupied area of ​​the display screen when it is in the retracted state. Before the upper positioning component 31 and the lower guide component 41 are connected to each other, the electronic display screen 21 is in the retracted state. That is, the electronic display screen 21 adopts a foldable and retractable electronic screen, thereby reducing the electronic display screen 21 to a smaller volume structure when it is not needed for warning display, thereby facilitating the transportation and movement of the electronic display screen 21, thereby better reducing the load burden of the drone 11 in the process of implementing the road condition warning, thereby ensuring the flexibility of the drone 11. At the same time, the electronic display screen 21 can adopt an electronic display screen with a display function such as a cloth-like structure, thereby further improving the retractability of the electronic display screen 21.

[0024] Preferably, a road condition hazard warning system of the present invention is provided. To improve the safety and reliability of warning arrangement work using a drone 11 carrying a display component and a positioning and fixing component, and to avoid malfunction of the drone 11 due to low precision of rigid docking when the upper positioning component 31 and the lower guide component 41 are connected, the lower end of the upper positioning component 31 includes an elastic telescopic rod. When the upper positioning component 31 and the lower guide component 41 are connected, the lower end of the elastic telescopic rod at the lower end of the upper positioning component 31 is inserted into the inner side of the lower guide component 41. Preferably, a road condition hazard warning system of the present invention is provided. To improve the buffering effect of the elastic telescopic rod when the upper positioning component 31 and the lower guide component 41 are docked, the elastic telescopic rod has a multi-stage telescopic structure. That is, Figures 2 to 6 As shown, the lower end of the upper positioning component 31 is a multi-segment structure, and the multi-segment structure is an elastic telescopic structure with respect to each other, that is, when there is no external force, the elastic telescopic rods of the multiple sections are in an extended state. When the lower end of the elastic telescopic structure is acted upon by an external force, it can be retracted, and the retracted stroke is proportional to the magnitude of the external force. Therefore, when the upper positioning component 31 is docked with the lower guide component 41, if there is a collision due to insufficient docking control accuracy, the elastic telescopic structure can play a good buffering effect, avoiding the impact of the collision on the control of the drone 11, thereby ensuring the safety and reliability of the upper positioning component 31 when docking with the lower guide component 41.

[0025] Preferably, in a road condition warning system of the present invention, in order to facilitate the connection between the lower end of the upper positioning component 31 and the upper end of the lower guide component 41, so that the positioning and fixing component can better realize the layout connection of the road condition warning system, the upper end of the lower guide component 41 is provided with a guide opening 411, and the guide opening 411 is wide at the top and low at the bottom. That is, by adding a trumpet-shaped structure that opens upward to the upper end of the lower guide component 41, the lower end of the upper positioning component 31 has a larger docking allowable error when docking with the lower guide component 41, so that the docking efficiency when the upper positioning component 31 is connected to the lower guide component 41 can be better improved, thereby improving the efficiency of the layout and use when the road condition warning system is used.

[0026] Preferably, the present invention provides a road condition warning system, wherein the display assembly includes a folding and storing assembly, and the folding and storing assembly is connected to the electronic display screen 21 for controlling the electronic display screen 21 to switch between a contracted state and an expanded state. That is, by providing a structural device for folding and storing the electronic display screen 21, the electronic display screen 21 is in a stored structural state when it is not needed for warning display, so that the electronic display screen 21 can have a smaller volume after being folded and stored, thereby facilitating the carrying and flying of the drone 11. When the electronic display screen 21 needs to be unfolded into a planar structure, the folding and storing assembly can be used to drive the electronic display screen 21 to unfold from the stored state to a planar state for displaying warning content.

[0027] Preferably, the road condition warning system of the present invention can easily and quickly change the electronic display screen 21 from the contracted state to the expanded state, such as Figure 13 to Figure 14 As shown, the foldable storage assembly includes an inflatable ring 26, and the inflatable ring 26 is used to be filled with compressed gas. When the inflatable ring 26 is filled with compressed gas, the electronic display screen 21 is unfolded. Figure 13 to Figure 14 As shown, when the inflatable ring 26 is filled with compressed gas, the inflatable ring 26 and the electronic display screen 21 can be in a flat unfolded structure, and when there is no inflatable compressed gas in the inflatable ring 26, the electronic display screen 21 and the inflatable ring 26 are in a soft and foldable state. In this state, the electronic display and the inflatable ring 26 can be folded and placed in a special storage box at the same time, so that it is convenient to carry the electronic display screen 21 with the drone 11 for flight. When the electronic display screen 21 needs to be unfolded for road condition warning display, the compressed gas is quickly filled into the inflatable ring 26 to unfold the folded and stored electronic display screen 21 into a flat shape. Figure 13 to Figure 14 The status shown can be used to display traffic warning information normally.

[0028] Preferably, in the road condition warning system of the present invention, in order to facilitate the storage of the electronic display screen 21 in a retracted state, the folding storage component includes a folding component, and the electronic display screen 21 is stored in a ring shape in the folding component when it is in a retracted state. That is, when the drone 11 is used to carry the electronic display screen 21 for flight, in order to reduce the wind resistance during the flight of the drone 11, the electronic display screen 21 is folded into a retracted state and then stored using the folding component, and when the electronic display screen 21 needs to be unfolded, the electronic display screen 21 can be stored through the folding component.

[0029] Preferably, the road condition warning system of the present invention is to improve the structural reliability of the folding assembly to ensure the reliable implementation of the system when used for road condition warning. Figures 9 to 12 As shown, the folding assembly includes a folding support frame 221 and a folding middle support 222 rotatably connected to the end thereof, and the folding middle support 222 is rotatably connected to a folding side support 223 at one end away from the folding support frame 221, that is, the folding side support 223 can be rotated and bent relative to the folding middle support 222, and at the same time, the folding middle support 222 can also be rotated and bent relative to the folding support frame 221. The lower end of the folding support frame 221 is connected to a middle storage tube 231, and the lower end of the folding side support 223 is connected to a side storage tube 232. The upper ends of the electronic display screen 21 are connected to the middle storage tube 231 and the side storage tube 232. When the electronic display screen 21 is in a contracted state, it is stored in the middle storage tube 231 and the side storage tube 232 in a ring shape. That is, Figures 9 to 12 As shown, after the folding component is unfolded, the electronic display screen 21 can be unfolded. When the electronic display screen 21 needs to be stored, the electronic display screen 21 can be rolled up in the middle storage tube 231 and the side storage tube 232 of the folding component and then the folding component can be folded again, thereby reducing the length occupied in the horizontal direction of the electronic display screen 21 after rolling up, so that the electronic display screen 21 in the collapsed state can have a more collapsed size.

[0030] Preferably, the road condition warning system of the present invention is designed to make the electronic display screen 21 have a good external structural strength when in the unfolded state, such as Figures 10 to 12 As shown, the position of the lower end of the electronic display screen 21 opposite to the position of the middle storage tube 231 is connected to the middle connecting tube 241, the position of the lower end of the electronic display screen 21 opposite to the position of the side storage tube 232 is connected to the side connecting tube 243, and an elastic connecting rod 242 is connected between the middle connecting tube 241 and the side connecting tube 243, and the elastic connecting rod 242 is made of a flexible and bendable material. That is, after the lower end of the electronic display screen 21 is connected with the middle connecting tube 241, the elastic connecting rod 242 and the side connecting rod, the electronic display screen 21 can be used as shown in the figure. Fig.12As shown, after unfolding, the lower end thereof can be made flat, thereby ensuring that the electronic display screen 21 can have a clearer and complete display effect when in the unfolded state, thereby providing a more reliable and stable warning display effect for the road condition hazard warning system.

[0031] At the same time, if Figures 9 to 12 As shown, the folding middle bracket 222 and the folding side bracket 223 can be simultaneously arranged at the two ends of the folding support frame 221, and the side storage tubes 232 are correspondingly arranged at the two ends of the middle storage tube 231. Similarly, at the lower end of the electronic display screen 21, elastic connecting rods 242 are arranged at both ends of the middle connecting tube 241 and are connected with the side connecting tubes 243, which can make the folding and unfolding of the entire folding component have a higher size ratio, and make the electronic display screen 21 have a larger size ratio when in the contracted state and the unfolded state, which is more conducive to reducing the size of the contracted electronic display screen 21, and further conducive to the efficient application of a road condition hazard warning system of the present invention when applied to road hazard warning.

[0032] Preferably, in a road condition hazard warning system of the present invention, the lower end of the electronic display screen 21 in the unfolded state is connected to a magnetic attraction portion that can be magnetically attracted, and the positioning component also includes a magnet. When the electronic display screen 21 is in the unfolded state, the magnetic attraction portion at its lower end is attracted to the magnet through magnetism. That is, in order to avoid the electronic display screen 21 from moving and deforming when the electronic display screen 21 is in the unfolded state due to the wind, it is necessary to stably and reliably maintain the unfolded display plane of the electronic display screen 21 after the electronic display screen 21 is unfolded, so as to ensure the display quality of the electronic display screen 21. Therefore, when the electronic display screen 21 is in the unfolded state, the magnetic attraction portion at its lower end is magnetically attracted to the magnet preset under the positioning component, i.e., the lower guide component 41, so that the electronic display screen 21 has a relatively stable unfolded shape when in the unfolded state, so as to maintain the better warning display effect when the system is used for road condition hazard warning.

[0033] A road condition warning method is also provided, and the specific steps include: Step S1, real-time monitoring of road conditions, such as real-time inspection by road cameras or inspection by drones 11, can be used to detect road conditions in real time, especially sections where dangerous situations are prone to or may occur. When a dangerous situation occurs on the road, an alarm is issued through the road dangerous situation control command center to activate the early warning system. That is, the road conditions are monitored in real time through road detection, and when a dangerous situation occurs, the road condition dangerous situation early warning system is ready to be activated for road condition early warning.

[0034] Step S2: The remote-controlled flying mobile component flies to the dangerous road location, and remotely controls the upper positioning component 31 to connect with the lower guiding component 41 at one end of the dangerous road in the direction of the vehicle. That is, by remotely controlling the flight of the drone 11, the upper positioning component 31 is connected with the lower guiding component 41, so that the road condition warning system is composed of the following: Figure 3 , Figure 4 The status shown is Figure 5 , Figure 6 The status of the position shown changes, completing the installation of the road condition hazard warning system and making equipment preparations for road condition hazard warning.

[0035] Step S3, control the electronic display screen 21 to expand, so that the electronic display screen 21 changes from the contracted state to the expanded state, and displays the dangerous situation at the front of the road on the electronic display screen 21, and displays warning information to the vehicles on the road. Figures 5 to 8 , Figure 1 As shown in the state change, the electronic display screen 21 originally in the contracted state changes to the expanded state. Figure 1 In the state shown, a road warning or alert message can be displayed on the electronic display screen 21 to remind oncoming vehicles to pay attention to the danger ahead and to prepare corresponding countermeasures in advance to avoid the spread of the danger.

[0036] Preferably, in the method for warning of dangerous road conditions of the present invention, after the electronic display screen 21 is unfolded in the control in step S3, the magnetic attraction portion at the lower end of the electronic display screen 21 is magnetically attracted to the magnet of the positioning assembly when the electronic display screen 21 is unfolded. Figure 1 After the state shown, a magnetic attraction component is arranged at the lower end of the electronic display screen 21, so that the electronic display screen 21 is completed as shown. Figure 1 After being unfolded in the state shown, the electronic display screen 21 can be better fixed, so that the electronic display screen 21 has a better and more stable warning display effect.

[0037] Specific embodiments are used in this article to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the methods and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A road condition warning system, characterized in that: include: A flying mobile assembly, the flying mobile assembly comprising a connecting support frame (12) and a drone (11) connected to the upper end of the connecting support frame (12), the drone (11) being used to carry the connecting support frame (12) to achieve flight; A display component, the display component is connected to the lower end of the connecting support frame (12), and the display component includes an electronic display screen (21); A positioning and fixing assembly, the positioning and fixing assembly comprising an upper positioning assembly (31) and a lower guide assembly (41), a plurality of the lower guide assemblies (41) being arranged at intervals along the road direction, the upper end of the upper positioning assembly (31) being fixedly connected to the lower end of the connecting support frame (12), the lower end of the upper positioning assembly (31) being insertable into the inner side of the lower guide assembly (41) along the upper end of the lower guide assembly (41) so that the upper positioning assembly (31) and the lower guide assembly (41) are mutually engaged on a horizontal plane; The electronic display screen (21) comprises a retracted state and an expanded state. The plane occupied area of ​​the electronic display screen (21) when displaying the expanded state is larger than the plane occupied area of ​​the display screen when in the retracted state. Before the upper positioning component (31) and the lower guiding component (41) are connected to each other, the electronic display screen (21) is in the retracted state.

2. A road condition warning system according to claim 1, characterized in that: The lower end of the upper positioning component (31) comprises an elastic telescopic rod, and when the upper positioning component (31) is connected to the lower guide component (41), the lower end of the elastic telescopic rod at the lower end of the upper positioning component (31) is inserted into the inner side of the lower guide component (41).

3. A road condition warning system according to claim 2, characterized in that: The elastic telescopic rod is a multi-stage telescopic structure.

4. A road condition warning system according to claim 1, characterized in that: A guide opening (411) is provided at the upper end of the lower guide component (41), and the guide opening (411) is wider at the top and lower at the bottom.

5. A road condition warning system according to claim 1, characterized in that: The display component comprises a folding and storing component, and the folding and storing component is connected to the electronic display screen (21) and is used to control the electronic display screen (21) to switch between a contracted state and an expanded state.

6. A road condition warning system according to claim 5, characterized in that: The foldable storage assembly comprises an inflatable ring (26), wherein the inflatable ring (26) is used to be filled with compressed gas; when the inflatable ring (26) is filled with compressed gas, the electronic display screen (21) is in an unfolded state.

7. A road condition warning system according to claim 5, characterized in that: The folding and storing component comprises a folding component, and the electronic display screen (21) is stored in a ring shape inside the folding component when it is in a contracted state.

8. A road condition warning system according to claim 7, characterized in that: The folding assembly comprises a folding support frame (221) and a folding middle support frame (222) rotatably connected to the end thereof; one end of the folding middle support frame (222) away from the folding support frame (221) is rotatably connected to a folding side support frame (223); the lower end of the folding support frame (221) is connected to a middle storage tube (231); the lower end of the folding side support frame (223) is connected to a side storage tube (232); the upper end of the electronic display screen (21) is connected to the middle storage tube (231) and the side storage tube (232); when the electronic display screen (21) is in a contracted state, it is stored in the middle storage tube (231) and the side storage tube (232) in a ring shape.

9. A road condition warning system according to claim 8, characterized in that: A middle connecting tube (241) is connected to a position of the lower end of the electronic display screen (21) opposite to the middle storage tube (231), and a side connecting tube (243) is connected to a position of the lower end of the electronic display screen (21) opposite to the side storage tube (232). An elastic connecting rod (242) is connected between the middle connecting tube (241) and the side connecting tube (243), and the elastic connecting rod (242) is made of a flexible and bendable material.

10. A road condition warning system according to any one of claims 1 to 9, characterized in that: The electronic display screen (21) is in an unfolded state, and a magnetic attraction portion that can be attracted is connected to its lower end. The positioning assembly also includes a magnet. When the electronic display screen (21) is in an unfolded state, the magnetic attraction portion at its lower end is attracted to the magnet through magnetism.

11. A method for early warning of dangerous road conditions, characterized in that: Using the road condition warning system according to claim 10, the specific steps include: Step S1: Real-time monitoring of road conditions. When a road hazard occurs, an alarm is issued through the road hazard control command center to activate the early warning system; Step S2, the remote-controlled flying mobile component flies to the location where the road is in danger, and remotely controls the upper positioning component (31) to connect with the lower guiding component (41) at one end of the dangerous road in the direction of the oncoming vehicle; Step S3, controlling the unfolding of the electronic display screen (21), so that the electronic display screen (21) changes from a contracted state to an unfolded state, and displaying the dangerous situation at the front end of the road on the electronic display screen (21), and displaying warning information to vehicles coming on the road.

12. A method for early warning of dangerous road conditions according to claim 11, characterized in that: After the electronic display screen (21) is controlled to be unfolded in step S3, the magnetic attraction portion at the lower end of the electronic display screen (21) is magnetically attracted to the magnet of the positioning assembly when the electronic display screen (21) is in the unfolded state.

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