Highway traffic operation risk holographic monitoring early warning and prevention and control equipment system

Abstract

The invention relates to an expressway traffic operation risk holographic monitoring early warning and prevention and control equipment system, and belongs to the technical field of intelligent traffic. The system comprises a data acquisition device, an intelligent power supply device, a risk holographic monitoring and early warning controller, a roadside intelligent integrated early warning device issuing unit and an expressway holographic sensing platform, the data acquisition device comprises a distributed sensor, a hub temperature sensor, a water film thickness sensor and a license plate recognizer; the roadside intelligent integrated early warning device issuing unit comprises a first LED early warning screen and a second LED early warning screen. According to the invention, a directional early warning information issuing mode is adopted, information data of vehicles running in an abnormal state are combined according to a running track, holographic monitoring early warning is carried out, the defect that traditional early warning information is not clear is overcome, and blind spots of whole-process monitoring in different scenes of an expressway are eliminated; and the holographic monitoring level of the traffic operation risk of the highway in the mountainous area is improved.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent transportation technology, and specifically relates to a highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system. Background Art

[0002] The operation of mountain highways often presents the characteristics of long slopes, steep slopes, many bends and sharp bends in terms of linear shape. In terms of composition, there is a high proportion of bridges and tunnels, high slopes, and sections near water and cliffs, which are prone to form high-risk sections. In terms of demand, motorization and urbanization are developing rapidly, traffic demand is soaring, and traffic accidents are more frequent. Faced with the severe traffic safety situation, the holographic monitoring, early warning and active prevention and control technology of traffic operation risks on mountain highways has gradually become a research direction urgently needed by road safety operation management units and scientific researchers.

[0003] The search of existing early warning and active prevention and control technologies found that, at present, in the field of highway traffic operation risk monitoring, single sensor monitoring and early warning screen display technology are mainly used. However, there are still some problems in the actual promotion of existing early warning and active prevention and control technologies. First, some highways use sensor encryption to identify traffic operation risks, but the application cost is not fully considered, which makes large-scale application difficult; second, the deployment range and detection range of the existing traffic operation monitoring system are limited, and only the traffic operation status within a shorter section can be realized, and the monitoring task of the entire section cannot be effectively realized; third, the early warning method is not very directional, lacks a "holographic, directional" early warning solution, and the early warning effect is not ideal; finally, the construction cost of large-scale deployment of monitoring equipment is high, the subsequent maintenance cost is huge, and the effect is not obvious; in addition, the system requires a lot of manual equipment maintenance. Therefore, it is necessary to further study the technology suitable for highway traffic operation risk monitoring to improve the efficiency and reliability of the system and fundamentally solve the problems of use cost and manual maintenance. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a holographic monitoring, early warning and prevention and control equipment system for highway traffic operation risks.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system, including: a holographic perception platform, a data acquisition device, a risk holographic monitoring and early warning controller, a roadside intelligent integrated early warning device release unit and an intelligent power supply;

[0007] The data acquisition device includes a wheel hub temperature sensor, a water film thickness sensor and a license plate reader;

[0008] The risk holographic monitoring and early warning controller includes distributed sensors, data communicators, data fusion devices, main control chips and data transmitters;

[0009] The roadside intelligent integrated warning device release unit includes a first LED warning screen and a second LED warning screen; there are two types of risk holographic monitoring and warning controllers, namely, the first risk holographic monitoring and warning controller and the second risk holographic monitoring and warning controller;

[0010] The first LED warning screen is connected to the first risk holographic monitoring and warning controller;

[0011] The second LED warning screen is connected to the second risk holographic monitoring and warning controller;

[0012] The first LED warning screen is set up on a long downhill section;

[0013] The second LED warning screen is set up on the road section prone to waterlogging;

[0014] There are multiple distributed sensors; laser beams are emitted by the distributed sensors to obtain data on the vehicle's speed, model and lane;

[0015] The wheel hub temperature sensor is used to monitor the wheel hub temperature of vehicles on long downhill sections;

[0016] The water film thickness sensor is used to monitor the water film thickness data of road sections prone to water accumulation;

[0017] The license plate reader is used to identify the vehicle license plate;

[0018] The main control chip is connected to the data communicator, the data fusion device, and the data transmitter respectively;

[0019] The data fusion device obtains the data collected by the wheel temperature sensor, water film thickness sensor, and license plate recognition device, then splices and fuses the data according to the vehicle, and then sends it to the main control chip; at the same time, the distributed sensor sends the calculated data to the main control chip;

[0020] The main control chip determines whether the received data exceeds the specified value. If so, it is determined to be abnormal data. If the vehicle wheel hub temperature exceeds the specified value, the main control chip sends the vehicle wheel hub temperature and the corresponding license plate to the second LED warning screen for display through the data transmitter, reminding the vehicle that the brake drum temperature is too high. If the water film thickness data exceeds the specified value, the main control chip sends the water film thickness data to the second LED warning screen for display through the data transmitter, reminding the vehicle that there is water accumulation on the road ahead. If the main control chip determines that the vehicle is speeding in the received data, the vehicle's license plate, model, lane and speed information are sent to the first LED warning screen for display, prompting a speeding warning.

[0021] The main control chip is also used to send the received data and judgment results to the holographic perception platform through the data communicator;

[0022] The intelligent power supply is respectively connected to the risk holographic monitoring and early warning controller, the data acquisition device, and the road test intelligent integrated early warning release unit, and is used to supply power to the risk holographic monitoring and early warning controller, the data acquisition device, and the road test intelligent integrated early warning release unit;

[0023] The holographic perception platform is used to obtain real-time vehicle data of continuous sections formed by various distributed sensors, as well as the data and judgment results received by the main control chip, to achieve the effect of reconstructing the vehicle trajectory, thereby realizing holographic perception.

[0024] Furthermore, preferably, the data fusion device communicates with the wheel hub temperature sensor, the water film thickness sensor, and the license plate recognition device using at least one of RS485, RS232, and Lora.

[0025] Furthermore, preferably, the risk holographic monitoring and early warning controller also includes a program debugging interface, which is connected to the main control chip and is used to debug the judgment logic in the main control chip.

[0026] Furthermore, preferably, it also includes an anti-reverse connection protection circuit, and the intelligent power supply is connected to the risk holographic monitoring and early warning controller through the anti-reverse connection protection circuit.

[0027] Furthermore, preferably, there are multiple distributed sensors, and the multiple distributed sensors communicate with each other using wireless communication.

[0028] Furthermore, preferably, it also includes a license plate recognizer fill light; a license plate recognizer is fixed on the first LED warning screen and the second LED warning screen, and a license plate recognizer fill light is fixed next to each license plate recognizer.

[0029] Furthermore, preferably, a risk holographic monitoring and warning controller is fixedly connected under the first LED warning screen and the second LED warning screen.

[0030] Further, preferably, the intelligent power supply includes a first fuse blowing circuit, a second fuse blowing circuit, a mains power supply interface, a rectifier circuit and a multi-channel power supply circuit;

[0031] The mains power supply interface is directly connected to the highway power supply system, the mains power supply interface is connected to the rectifier circuit, and a first fuse fusing circuit is added to the circuit;

[0032] The rectifier circuit is connected to the multi-channel power supply circuit, and a second fuse fusing circuit 18 is added to the circuit;

[0033] The first fuse blows the circuit to protect the stability of the entire power supply line;

[0034] The second fuse blowing circuit is used to protect the subsequent connected equipment;

[0035] The rectifier circuit is used to convert AC power into DC power;

[0036] The multi-channel power supply circuit is used to output different voltages to meet different power requirements.

[0037] Furthermore, preferably, a warning light strip is also included, and a warning light strip is arranged on the screen sides of the first LED warning screen and the second LED warning screen.

[0038] Furthermore, preferably, when the holographic perception platform needs to remotely obtain information data of a vehicle traveling in an abnormal state, it sends a command to the data communicator, and the data communicator obtains the data of the vehicle traveling in the abnormal state from the main control chip and then sends it to the holographic perception platform.

[0039] In the present invention, the program debugging interface is connected to the main control chip, which facilitates on-site debugging of the risk holographic monitoring and early warning controller.

[0040] In the present invention, the anti-reverse connection protection circuit is connected to the intelligent power supply, which can prevent the risk holographic monitoring and early warning controller from being damaged due to wiring errors.

[0041] In the present invention, the wireless communication methods include Lora, ZigBee

[0042] In the present invention, the first fuse blowing circuit can prevent the intelligent power supply failure from affecting the power supply of the entire expressway.

[0043] The second fuse blowing circuit can blow the fuse in real time when a system failure occurs, ensuring that the equipment will not have safety hazards such as leakage.

[0044] In the present invention, the data acquisition device supports multiple voltages of 12V and 24V for power supply, and supports multiple communication modes such as RS485, RS232, Lora, etc. for data transmission.

[0045] The license plate reader fill light is used to improve the accuracy of target vehicle license plate recognition.

[0046] The present invention is based on the holographic monitoring, early warning and active prevention and control technology of traffic operation risks on mountain highways. It adopts a multi-sensor data fusion monitoring solution to develop holographic monitoring and early warning equipment for traffic operation risks under multiple working conditions, and completes real-time monitoring of vehicle operation risks in multiple sections and targeted release of early warning information. It has broad application prospects for vehicle operation status monitoring under multiple working conditions.

[0047] The distributed sensors themselves are numbered and installed in sequence according to the up and down directions of the road. The collected data is organized according to the numbered labels.

[0048] The vehicle data involved in the present invention include vehicle model, vehicle speed, driving lane (which can be collected by distributed sensors), license plate (which can be collected by license plate recognizer), and wheel hub temperature (which can be collected by wheel hub temperature sensor) data.

[0049] The data fusion device can fuse (join) data in order according to the vehicle license plate number and the passing time. The present invention can holographically perceive the driving risk of the vehicle according to the driving status of the vehicle and issue warning information to vehicles with abnormal driving behavior.

[0050] The second LED warning screen and the first LED warning screen have different functions:

[0051] The second LED warning screen can publish vehicle wheel hub temperature, water film thickness data, and issue warning information about high vehicle brake hub temperature and road surface water warning information; the first LED warning screen can issue warning information with license plate, vehicle model, lane, and speeding to vehicles with abnormal driving behavior.

[0052] The first LED warning screen is set at a long downhill section; the second LED warning screen is set at a section prone to water accumulation, preferably a section prone to water accumulation at the bottom of a long downhill section.

[0053] The data communicator is connected to the holographic perception platform. For example, when the holographic perception platform needs to remotely obtain information data of a vehicle traveling in an abnormal state, a command is sent to the data communicator, and the data communicator sends the information data of the vehicle traveling in the abnormal state to the holographic perception platform.

[0054] The present invention optimizes the communication distance and deploys a plurality of distributed sensors.

[0055] The first fuse blows the circuit to protect the stability of the entire power supply line, preventing damage to the power supply of the entire line due to a sudden failure of the equipment.

[0056] The second fuse blowing circuit is used to protect the subsequent connector (loads such as data acquisition devices) to prevent abnormal conditions such as external instantaneous high voltage from causing damage to the subsequent connector.

[0057] The rectifier circuit converts AC power into DC power. Because we need DC (direct current power) power supply.

[0058] The multi-channel power supply circuit can output different voltages to meet the power requirements of different electrical appliances.

[0059] The system of the present invention can also be deployed to cover tunnel groups, long downhill sections, curved roads and other sections, and can monitor the operating status of target vehicles in all directions, and issue warning information in a targeted manner through LED warning screens to remind and monitor the operating risks of vehicles throughout the entire process.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] The present invention can select different sensors according to different usage scenarios, and is suitable for monitoring long downhill slopes, continuous curved slopes, and tunnel sections, but is not limited to such scenarios. The present invention overcomes the problems of discretization and singularity in traditional monitoring. The present invention adopts a directional warning information release method, combines the information data of vehicles traveling in abnormal conditions according to the running trajectory, and adopts a "local + remote" warning method for holographic monitoring and warning, which solves the defect of unclear traditional warning information and eliminates the blind spots of full-process monitoring in different scenarios of highways. The holographic monitoring level of traffic operation risks on mountain highways has been improved.

[0062] The present invention continuously collects the status information of vehicles traveling on the road section and the status information of traffic flow by encrypting and deploying low-cost distributed sensors. It has the technical characteristics of holographic monitoring, operation trajectory reconstruction, continuous feature splicing, intelligent directional release, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0064] Figure 1 It is a schematic diagram of the layout of the highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system of the present invention;

[0065] Figure 2 It is a structural schematic diagram of the highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system of the present invention;

[0066] Figure 3 This is the structure diagram of the intelligent power supply;

[0067] Figure 4 This is a schematic diagram of the structure of the first LED warning screen installation;

[0068] Figure 5 This is a schematic diagram of the structure of the second LED warning screen installation;

[0069] Figure 6It is a reconstruction diagram of holographic perception data; among them, (a) vehicle running trajectory diagram; (b) vehicle running trajectory spatial distribution diagram;

[0070] Figure 7 It is a simulation diagram of vehicle running trajectory;

[0071] Among them, 1. holographic perception platform; 2. distributed sensor; 3. wheel hub temperature sensor; 4. water film thickness sensor; 5. license plate reader; 6. data communicator; 7. data fusion device; 8. main control chip; 9. data transmitter; 10. program debugging interface; 11. intelligent power supply; 12. second LED warning screen; 13. first LED warning screen; 14. license plate reader fill light; 15. communication antenna; 16. pole; 17. first fuse blowing circuit; 18. second fuse blowing circuit; 19. AC power supply interface; 20. rectifier circuit; 21. multi-channel power supply circuit; 22. warning light strip; 23. laser beam; 24. anti-reverse protection circuit; 25. first risk holographic monitoring and early warning controller; 26. second risk holographic monitoring and early warning controller. DETAILED DESCRIPTION

[0072] The present invention is further described in detail below in conjunction with embodiments.

[0073] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0074] Those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific technology, connection relationship or condition is specified in the examples, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not specified, they are all conventional products that can be purchased.

[0075] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connections. The term "and / or" used here includes any unit and all combinations of one or more associated listed items.

[0076] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0077] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0078] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0079] like Figure 1 to Figure 5 As shown, a highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system includes: a holographic perception platform 1, a data acquisition device, a risk holographic monitoring and early warning controller, a roadside intelligent integrated early warning device release unit and an intelligent power supply 11;

[0080] The data acquisition device includes a wheel hub temperature sensor 3, a water film thickness sensor 4 and a license plate recognition device 5;

[0081] The risk holographic monitoring and early warning controller includes a distributed sensor 2, a data communicator 6, a data fusion device 7, a main control chip 8 and a data transmitter 9;

[0082] The roadside intelligent integrated warning device release unit includes a first LED warning screen 13 and a second LED warning screen 12; there are two types of risk holographic monitoring and warning controllers, namely a first risk holographic monitoring and warning controller 25 and a second risk holographic monitoring and warning controller 26;

[0083] The first LED warning screen 13 is connected to the first risk holographic monitoring and warning controller 25;

[0084] The second LED warning screen 12 is connected to the second risk holographic monitoring warning controller 26;

[0085] The first LED warning screen 13 is arranged on a long downhill section;

[0086] The second LED warning screen 12 is arranged on the road section prone to water accumulation;

[0087] There are multiple distributed sensors 2; the distributed sensors 2 emit laser beams 23 to obtain data on the speed, vehicle type and lane of the vehicle;

[0088] The wheel hub temperature sensor 3 is used to monitor the wheel hub temperature of the vehicle on a long downhill section;

[0089] The water film thickness sensor 4 is used to monitor the water film thickness data of the road section prone to water accumulation;

[0090] The license plate recognition device 5 is used to recognize the vehicle license plate;

[0091] The main control chip 8 is connected to the data communicator 6, the data fusion device 7, and the data transmitter 9 respectively;

[0092] The data fusion device 7 obtains the data collected by the wheel hub temperature sensor 3, the water film thickness sensor 4, and the license plate recognition device 5, and then splices and fuses the data according to the vehicle, and then sends it to the main control chip 8; at the same time, the distributed sensor 2 sends the calculated data to the main control chip 8;

[0093] The main control chip 8 determines whether the received data exceeds the specified value. If it exceeds the specified value, it is determined to be abnormal data; if the vehicle wheel hub temperature exceeds the specified value, the main control chip 8 sends the vehicle wheel hub temperature and the corresponding license plate to the second LED warning screen 12 through the data transmitter 9 for display, reminding the vehicle that the brake drum temperature is too high; if the water film thickness data exceeds the specified value, the main control chip 8 sends the water film thickness data to the second LED warning screen 12 through the data transmitter 9 for display, reminding the vehicle that there is water accumulation on the road ahead; if the main control chip 8 determines that the vehicle is speeding in the received data, the vehicle license plate, vehicle model, lane and speed information are sent to the first LED warning screen 13 for display, prompting a speeding warning;

[0094] The main control chip 8 is also used to send the received data and judgment results to the holographic perception platform 1 through the data communicator 6;

[0095] The intelligent power supply 11 is respectively connected to the risk holographic monitoring and early warning controller, the data acquisition device, and the intelligent integrated early warning release unit for road testing, and is used to supply power to the risk holographic monitoring and early warning controller, the data acquisition device, and the intelligent integrated early warning release unit for road testing;

[0096] The holographic perception platform 1 is used to obtain in real time the vehicle data of the continuous sections formed by the various distributed sensors, as well as the data and judgment results received by the main control chip 8, to achieve the effect of reconstructing the vehicle trajectory, thereby realizing holographic perception.

[0097] Specifically, the data fusion device 7 communicates with the wheel hub temperature sensor 3 , the water film thickness sensor 4 , and the license plate recognition device 5 using at least one of RS485, RS232, and Lora.

[0098] Specifically, the risk holographic monitoring and early warning controller also includes a program debugging interface 10 , which is connected to the main control chip 8 and is used to debug the judgment logic in the main control chip 8 .

[0099] Specifically, it also includes an anti-reverse connection protection circuit 24, and the intelligent power supply 11 is connected to the risk holographic monitoring and early warning controller through the anti-reverse connection protection circuit 24.

[0100] Specifically, there are multiple distributed sensors 2, and the multiple distributed sensors 2 communicate with each other using wireless communication.

[0101] Specifically, it also includes a license plate recognition fill light 14; a license plate recognition device 5 is fixed on each of the first LED warning screen 13 and the second LED warning screen 12, and a license plate recognition device fill light 14 is fixed next to each license plate recognition device 5.

[0102] Specifically, a risk holographic monitoring and warning controller is fixedly connected under the first LED warning screen 13 and the second LED warning screen 12.

[0103] Specifically, the intelligent power supply 11 includes a first fuse blowing circuit 17, a second fuse blowing circuit 18, a mains power supply interface 19, a rectifier circuit 20 and a multi-channel power supply circuit 21;

[0104] The mains power supply interface 19 is directly connected to the highway power supply system, the mains power supply interface 19 is connected to the rectifier circuit 20, and a first fuse fusing circuit 17 is added to the circuit;

[0105] The rectifier circuit 20 is connected to the multi-channel power supply circuit 21, and a second fuse fusing circuit 18 is added to the circuit;

[0106] The first fuse circuit 17 is used to protect the stability of the entire power supply line;

[0107] The second fuse circuit 18 is used to protect the subsequent connection equipment;

[0108] The rectifier circuit 20 is used to convert AC power into DC power;

[0109] The multi-channel power supply circuit 21 is used to output different voltages to meet different power requirements.

[0110] Specifically, it also includes a warning light strip 22 , and a warning light strip 22 is arranged on the screen sides of the first LED warning screen 13 and the second LED warning screen 12 .

[0111] Specifically, when the holographic perception platform 1 needs to remotely obtain information data of a vehicle traveling in an abnormal state, it sends a command to the data communicator 6 , and the data communicator 6 obtains the data of the vehicle traveling in an abnormal state from the main control chip 8 and then sends it to the holographic perception platform 1 .

[0112] The distributed sensor 2 is preferably fastened to the top surface of the highway roadside guardrail with fixing bolts, and the distributed sensor adopts the mains power supply solution;

[0113] The wheel hub temperature sensor 3 is preferably fastened to the top surface of the highway roadside guardrail with fixing bolts and powered by mains electricity;

[0114] Preferably, it also includes a communication antenna 15, and the first LED warning screen 13 and the second LED warning screen 12 are connected to the holographic perception platform 1 using their own communication antennas 15; the holographic perception platform 1 can obtain the real-time display information of the first LED warning screen 13 and the second LED warning screen 12 through the communication antenna 15.

[0115] A plurality of poles 16 are installed on the side of the highway, and the water film thickness sensor 4 is fixed on the pole 16; at the same time, the first LED warning screen 13 and the second LED warning screen 12 can also be installed on different poles 16 according to the needs. Specifically:

[0116] A first LED warning screen 13, a license plate reader 5, a license plate reader fill light 14, a communication antenna 15, a warning light strip 22, and a first risk holographic monitoring and warning controller 25 are fixed on a pole 16. The first risk holographic monitoring and warning controller 25 is arranged facing the lane, and the first risk holographic monitoring and warning controller 25 and the first LED warning screen 13 adopt a split design to facilitate on-site maintenance and equipment function debugging.

[0117] The second LED warning screen 12, the license plate reader 5, the license plate reader fill light 14, the communication antenna 15, the warning light strip 22, and the second risk holographic monitoring and warning controller 26 are fixed on the other pole 16. The second risk holographic monitoring and warning controller 26 is arranged facing the lane, and the second risk holographic monitoring and warning controller 26 and the first LED warning screen 13 adopt a split design to facilitate on-site maintenance and equipment function debugging.

[0118] The program debugging interface 10 is arranged on the side of the risk holographic monitoring and early warning controller to facilitate debugging and code burning operations by maintenance personnel.

[0119] The warning light strip 22 is used to increase the driver's attention to the first LED warning screen 13 and the second LED warning screen 12 .

[0120] The holographic perception platform 1 of the present invention obtains the information of the vehicle passing through each continuous section in real time, achieves the effect of reconstructing the vehicle trajectory, and realizes the function of holographic perception. The first LED warning screen 13 and the second LED warning screen 12 can also be controlled to display according to the perception results; specifically:

[0121] The trajectory reconstruction is realized by using the cubic spline interpolation method, which belongs to the linear interpolation method. The cubic spline interpolation function can ensure the continuity of the curve while improving the smoothness of the interpolation function. Definition of the cubic spline interpolation function: Assume that there are interpolation nodes on [a, b], a = x1 <x2<…<x n =b, the corresponding function value is y1,y2,…,y n If the function S(x) satisfies S(x j )=y j (j=1,2,…,n), S(x) in [x j ,x j+1 ](j=1,2,…,n-1) are all polynomials of no higher than three degrees. When S(x) has a second-order continuous derivative at [a,b]. Then S(x) is called a cubic spline interpolation function. Then use S j(x) indicates that it is in the jth subinterval [x j ,x j+1 ], S j The expression of (x) can be expressed by formula (1):

[0122] S j (x) = a j0 +a j1 x+a j2 x 2 +a j3 x 3 ,(j=1,2,…,n-1) (1)

[0123] Where a j0 ,a j1 ,a j2 ,a j3 is a constant determined by the interpolation condition and satisfies the following conditions:

[0124] S(x j )=y j ,S(x j -0) = S(x j +0),(j=2,…,n-1) (2)

[0125] S′(x j -0) = S′(x j +0),S″(x j -0)=S″(x j +0),(j=2,…,n-1) (3)

[0126] In formula (2) and (3): S(x j )=y j is the interpolation condition, which means the interpolation function S(x j ) at point x j The value at is equal to the target value y j , ensuring that the interpolation function passes through the given data points and achieves accurate interpolation at these points; S(x j -0) = S(x j +0) means in x j The consistency of the left and right derivatives of the point; similarly, S′(x j -0) = S′(x j +0)、S″(x j -0)=S″(x j +0) indicates point x j The first and second order derivatives of the left and right are consistent.

[0127] The reconstructed data is deduced according to the above formula, and the holographic perception data reconstruction map is further obtained. The holographic perception data reconstruction map is subdivided into the vehicle longitudinal distribution map and the vehicle lateral distribution map, such as Figure 6 shown.

[0128] Among them, the vehicle longitudinal distribution map can describe the longitudinal position of the vehicle on the road at different times, reflecting the distribution density, following distance, and speed change information of the vehicle on the road; the vehicle lateral position distribution map can describe the change of the lateral position (lane) of the vehicle when passing through the road section. These two types of information are combined with the inherent slope and curvature distribution characteristics of the road, and then refer to the changes in meteorological conditions (temperature, rainfall, illumination), which can comprehensively and meticulously reflect the holographic information of the vehicle in the operating section, and will be able to more effectively simulate the evolution of traffic operation status, make timely warnings of traffic risks, and thus prevent problems before they occur and achieve the goal of active prevention and control of traffic risks. The simulation results are as follows: Figure 7 As shown in the figure, the actual monitoring data of sensors in each section of the demonstration road section on July 19, 2024 were intercepted for matching and association, and the 10-minute period with the most vehicles was selected. After matching and association, the vehicle trajectories were reconstructed to obtain the simulation result diagram. It has been verified that there is basically no cross-conflict between vehicle trajectories, and the effect is good.

[0129] Through the above test simulation, it can be seen that the multiple distributed sensors deployed along the entire line can collect vehicle operation trajectory data in real time, which can reflect the complete vehicle operation trajectory within the road section where the system is deployed, and achieve the goal of "holographic" monitoring.

[0130] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system, characterized in that: include: Holographic perception platform (1), data collection device, risk holographic monitoring and early warning controller, roadside intelligent integrated early warning device release unit and intelligent power supply (11); The data acquisition device comprises a wheel hub temperature sensor (3), a water film thickness sensor (4) and a license plate recognition device (5); The risk holographic monitoring and early warning controller comprises a distributed sensor (2), a data communicator (6), a data fusion device (7), a main control chip (8) and a data transmission device (9); The roadside intelligent integrated warning device release unit comprises a first LED warning screen (13) and a second LED warning screen (12); there are two types of risk holographic monitoring and warning controllers, namely a first risk holographic monitoring and warning controller (25) and a second risk holographic monitoring and warning controller (26); The first LED warning screen (13) is connected to the first risk holographic monitoring and warning controller (25); The second LED warning screen (12) is connected to the second risk holographic monitoring and warning controller (26); The first LED warning screen (13) is arranged on a long downhill section; The second LED warning screen (12) is arranged at a road section prone to water accumulation; There are multiple distributed sensors (2); the distributed sensors (2) emit laser beams (23) to obtain data on the speed, vehicle type and lane of the vehicle; The wheel hub temperature sensor (3) is used to monitor the wheel hub temperature of the vehicle on a long downhill section; The water film thickness sensor (4) is used to monitor the water film thickness data of the road section prone to water accumulation; The license plate reader (5) is used to identify the vehicle license plate; The main control chip (8) is connected to the data communicator (6), the data fusion device (7), and the data transmission device (9) respectively; The data fusion device (7) obtains the data collected by the wheel hub temperature sensor (3), the water film thickness sensor (4), and the license plate recognition device (5), then splices and fuses the data according to the vehicle, and then sends the data to the main control chip (8); at the same time, the distributed sensor (2) sends the calculated data to the main control chip (8); The main control chip (8) determines whether the received data exceeds a specified value, and if so, determines that the data is abnormal data; if the vehicle wheel hub temperature exceeds the specified value, the main control chip (8) sends the vehicle wheel hub temperature and the corresponding license plate to the second LED warning screen (12) via the data transmitter (9) for display, thereby reminding the vehicle that the brake drum temperature is too high; if the water film thickness data exceeds the specified value, the main control chip (8) sends the water film thickness data to the second LED warning screen (12) via the data transmitter (9) for display, thereby reminding the vehicle that there is water on the road ahead; If the main control chip (8) determines that the vehicle is speeding in the received data, the vehicle license plate, vehicle model, lane and speed information are sent to the first LED warning screen (13) for display, prompting a speeding warning; The main control chip (8) is also used to send the received data and the judgment result to the holographic perception platform (1) via the data communicator (6); The intelligent power supply (11) is respectively connected to the risk holographic monitoring and early warning controller, the data acquisition device, and the intelligent integrated early warning release unit for road testing, and is used to supply power to the risk holographic monitoring and early warning controller, the data acquisition device, and the intelligent integrated early warning release unit for road testing; The holographic perception platform (1) is used to obtain in real time vehicle data of continuous sections formed by the vehicle through various distributed sensors, as well as data received and judgment results by the main control chip (8), so as to achieve the effect of reconstructing the vehicle trajectory, thereby realizing holographic perception.

2. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: The data fusion device (7) communicates with the wheel hub temperature sensor (3), the water film thickness sensor (4), and the license plate recognition device (5) using at least one communication method among RS485, RS232, and Lora.

3. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: The risk holographic monitoring and early warning controller also includes a program debugging interface (10), which is connected to the main control chip (8) and is used to debug the judgment logic in the main control chip (8).

4. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: It also includes an anti-reverse connection protection circuit (24), and the intelligent power supply (11) is connected to the risk holographic monitoring and early warning controller via the anti-reverse connection protection circuit (24).

5. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: There are multiple distributed sensors (2), and the multiple distributed sensors (2) communicate with each other using wireless communication.

6. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: It also includes a license plate recognition fill light (14); a license plate recognition device (5) is fixed on each of the first LED warning screen (13) and the second LED warning screen (12), and a license plate recognition device fill light (14) is fixed next to each license plate recognition device (5).

7. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: A risk holographic monitoring and warning controller is fixedly connected under each of the first LED warning screen (13) and the second LED warning screen (12).

8. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: The intelligent power supply (11) comprises a first fuse blowing circuit (17), a second fuse blowing circuit (18), a mains power supply interface (19), a rectifier circuit (20) and a multi-channel power supply circuit (21); The mains power supply interface (19) is directly connected to the highway power supply system, the mains power supply interface (19) is connected to the rectifier circuit (20), and a first fuse fusing circuit (17) is added to the circuit; The rectifier circuit (20) is connected to the multi-channel power supply circuit (21), and a second fuse fusing circuit (18) is added to the circuit; The first fuse fusing circuit (17) is used to protect the stability of the entire power supply line; The second fuse fusing circuit (18) is used to protect the subsequent connected equipment; The rectifier circuit (20) is used to convert AC power into DC power; The multi-channel power supply circuit (21) is used to output different voltages to meet different power requirements.

9. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: It also comprises a warning light strip (22), and a warning light strip (22) is arranged on the screen sides of the first LED warning screen (13) and the second LED warning screen (12).

10. The highway traffic operation risk holographic monitoring, early warning and prevention and control equipment system according to claim 1 is characterized by: When the holographic perception platform (1) needs to remotely obtain information data of a vehicle traveling in an abnormal state, it sends a command to the data communicator (6), and the data communicator (6) obtains the data of the vehicle traveling in the abnormal state from the main control chip (8), and then sends it to the holographic perception platform (1).

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