A traffic light-emitting sign remote control device and system based on Beidou positioning

Abstract

The application discloses a traffic light-emitting sign remote control device and system based on Beidou positioning, and relates to the technical field of traffic signal control.The traffic light-emitting sign remote control system comprises a Beidou positioning module, a signal enhancement processing module, a sign classification module, a multi-stage scheduling strategy module, a resource allocation management module and a remote control execution module.The application realizes remote real-time control of traffic signs by accurately positioning traffic light-emitting signs through Beidou satellites and combining real-time traffic flow data, greatly improves the efficiency of traffic management, can quickly respond to traffic condition changes, timely adjusts the display content and brightness of signs, provides more timely and accurate road condition information for drivers, and can timely replace or update warning and indication signs according to real-time road condition information, greatly improves the alertness of drivers, and reduces the risk of traffic accidents caused by information lag or loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traffic signal control, in particular to a traffic light sign remote control device and system based on Beidou positioning. BACKGROUND

[0002] The Beidou satellite navigation system is a global satellite navigation system independently developed by China. Since its development began in 2000, it has made significant progress and achievements. The system is composed of multiple geostationary satellites, inclined geosynchronous orbit satellites and central earth orbit satellites, and has the characteristics of wide coverage, high positioning accuracy and accurate time service. Traffic light signs are an important part of traffic infrastructure, providing road information, indicating directions and warning dangers to drivers, and are of great significance to road traffic safety and smoothness. With the continuous improvement and popularization of the Beidou satellite navigation system, its application field is also expanding, providing a solid technical foundation for the remote control of traffic light signs.

[0003] In the prior art, traffic light sign remote control has high real-time requirements, and as the number of signs increases, the computational load will also increase, which will cause positioning response delay. At the same time, in urban environments, buildings can block or reflect Beidou satellite signals, causing signal attenuation and multipath effects, further affecting the accuracy of Beidou positioning and exacerbating response delays. Therefore, how to design a multi-level scheduling strategy based on traffic flow and importance, allocate system resources and reduce positioning response delay is a problem to be solved. For this purpose, a traffic light sign remote control device and system based on Beidou positioning are provided. SUMMARY

[0004] The present application aims to provide a traffic light sign remote control device and system based on Beidou positioning to solve the problems raised in the background art.

[0005] To solve the above technical problems, the technical solution adopted by the present application is:

[0006] In a first aspect, a traffic light sign remote control device based on Beidou positioning is provided, which includes a traffic signal control machine, a signal controller is fixedly installed inside the traffic signal control machine, and a traffic light sign remote control system is integrated inside the signal controller.

[0007] In a second aspect, a traffic light sign remote control system based on Beidou positioning is provided, which is realized based on the traffic light sign remote control device based on Beidou positioning. The traffic light sign remote control system includes a Beidou positioning module, a signal enhancement processing module, a sign classification module, a multi-level scheduling strategy module, a resource allocation management module and a remote control execution module, wherein the modules are electrically connected.

[0008] The Beidou positioning module is configured to receive and process Beidou satellite signals to determine the position of the traffic light-emitting sign, and through accurate positioning, the sign can be accurately calibrated in the map and system.

[0009] The signal enhancement processing module is configured to enhance and process the received Beidou signals.

[0010] The sign classification module is configured to monitor traffic flow, analyze the importance of the traffic light-emitting sign in combination with the position of the traffic light-emitting sign and its influence on traffic flow, and divide the traffic light-emitting sign into different importance levels to allocate control priorities.

[0011] The multi-level scheduling strategy module is configured to implement a multi-level scheduling strategy according to traffic flow and sign importance, optimize system resource allocation, and reduce positioning response delay.

[0012] The resource allocation management module is configured to dynamically allocate and manage system resources according to the multi-level scheduling strategy and control priorities, to ensure that the system can still operate stably under high load.

[0013] The remote control execution module is configured to remotely control the display content and brightness of the traffic light-emitting sign according to the scheduling strategy and resource allocation result, to realize real-time updating and control of the traffic sign.

[0014] The further improvement of the technical scheme of the present application is that the sign classification module comprises a traffic flow monitoring unit and an importance evaluation unit.

[0015] The traffic flow monitoring unit is configured to monitor traffic flow in real time, analyze traffic congestion and traffic density information, distinguish high-flow areas and low-flow areas, and provide real-time traffic data support for the scheduling strategy.

[0016] The importance evaluation unit is configured to determine the influence of the traffic light-emitting sign on traffic flow smoothness according to a preset standard, and evaluate the importance of the traffic light-emitting sign in combination with its position to determine the importance level of the traffic light-emitting sign.

[0017] The further improvement of the technical scheme of the present application is that the Beidou positioning module specifically comprises:

[0018] The Beidou positioning module captures signals of multiple Beidou satellites through its built-in high-sensitivity receiving antenna, and calculates the propagation time of the signals, wherein the signals of the Beidou satellites contain satellite orbit information and time marker information.

[0019] After receiving, the Beidou positioning module decodes the signals using a built-in decoding unit to extract satellite navigation data, including the position of the satellite and the clock error.

[0020] The decoded satellite navigation data is further processed, the propagation time difference of multiple satellite signals to the receiver is calculated, the known position of the satellite is combined, the position of the traffic light-emitting sign relative to the satellite is calculated by using the triangulation principle, and the position is output in the form of longitude and latitude coordinates;

[0021] After the positioning calculation is completed, the Beidou positioning module compares and calibrates the output longitude and latitude data with the actual position of the traffic light-emitting sign, and then uploads the position data to the map of the traffic management system in real time, so that the sign can reflect its real and accurate position in the system.

[0022] The further improvement of the technical scheme of the application is that the signal enhancement processing module specifically comprises:

[0023] The signal enhancement processing module pre-processes the received Beidou satellite signal, including denoising and filtering operation, and by filtering out high-frequency noise and interference signals, the effective satellite signal components are retained;

[0024] The multi-path effect suppression technology is adopted to analyze and process the multi-path components in the signal, through the analysis of signal arrival time and path, the direct signal and reflected signal are distinguished by using signal processing technology (spectrum analysis), the multi-path interference caused by signal reflection and refraction is eliminated by adaptive filtering signal processing technology, the negative influence of multi-path effect on positioning accuracy is reduced, and the positioning accuracy in complex environment is significantly improved;

[0025] By optimizing the signal parameters and enhancing the signal strength, the filtered and multi-path suppressed signal is enhanced, the quality of the signal is further improved, and the positioning error caused by the signal problem is reduced.

[0026] The further improvement of the technical scheme of the application is that the traffic flow monitoring unit specifically comprises:

[0027] Through the sensors, cameras, geomagnetic sensors and radars pre-deployed on the road, the traffic flow data is collected in real time, the vehicle speed, quantity and traffic density information are analyzed;

[0028] The vehicle speed, quantity and traffic density are dynamically analyzed, the interval time and speed distribution of the vehicle are calculated, the traffic state of each monitoring section is analyzed, and the mode recognition technology is used to recognize the relative change trend of the traffic flow, wherein the interval time of the vehicle is the time difference of adjacent vehicles passing through the same detection point.

[0029] The historical data of the monitoring section in the past three months is analyzed, the traffic flow characteristics of different time periods (working days, weekends and holidays) are counted, and the flow threshold is set to distinguish the high flow area and the low flow area, and then the road is divided into different flow areas according to the traffic state analysis result of the monitoring section, and the traffic flow characteristic index of each area is calculated respectively to determine the flow area type of the area, wherein in the high flow area, the vehicle speed decreases and the traffic density increases, and in the low flow area, the vehicle speed is fast and the vehicles are sparse.

[0030] The importance evaluation unit specifically comprises:

[0031] The detailed information of the traffic light-emitting sign is collected, including the type of the sign (indicating sign, warning sign, prohibition sign), specific location (latitude and longitude coordinates, road section name and location description), function (providing traffic information, guiding traffic flow, warning danger) and current working state (normal, failure, maintenance), and the index data of traffic flow, speed and congestion time before and after the traffic light-emitting sign is set on the monitoring section are obtained;

[0032] The traffic flow, speed and congestion time index data before and after the traffic light-emitting sign are combined with the preset evaluation standard of congestion time reduction to calculate the fluency influence index, and the influence degree of the traffic light-emitting sign on the traffic fluency is comprehensively evaluated;

[0033] According to the size of the influence degree, the sign is divided into different sign grades, which are key sign grade, important sign grade and general sign grade, and the corresponding division threshold is allocated to each sign grade, and then the importance grade of the traffic light-emitting sign is determined according to the evaluation result, wherein the general sign grade refers to the sign which has a certain influence on the traffic fluency, but the effect of reducing congestion time is relatively limited.

[0034] The multi-level scheduling strategy module specifically comprises:

[0035] Through the traffic flow monitoring unit and the sign importance evaluation unit, the traffic flow data and the state information of the traffic light-emitting sign on the road are collected in real time, and then the high flow area or the low flow area is identified, and the scheduling demand of different sections is evaluated in combination with the importance grade of the sign;

[0036] According to the traffic flow, the importance of the sign and the characteristics of the section, different priorities are set, the high flow area or the section with high importance of the sign is given higher priority, and according to the given priority, the multi-level scheduling strategy is planned to ensure that the resources can be effectively allocated to the most needed area;

[0037] According to the set priority and scheduling strategy, real-time scheduling is implemented, high-flow and important sign areas are processed by dynamically adjusting signal light timing, lane guidance and traffic control means.

[0038] The further improvement of the technical scheme of the present application is that the resource allocation management module specifically comprises:

[0039] In combination with the multi-level scheduling strategy and the control priority, by monitoring the traffic flow, the sign importance and the road section state data in real time, the resource consumption of different areas is analyzed, the resource demand of each period and area is estimated in the high-flow and important sign areas, and the resource allocation is ensured to be prospective and accurate;

[0040] According to the priority setting in the scheduling strategy, different levels of resources are allocated to each area and task, more computing power and network bandwidth are preferentially allocated in high-flow areas or important sign areas, and the dynamic allocation mechanism ensures that the resources can respond to traffic condition changes in real time;

[0041] The use of system resources, including server load, network bandwidth and storage space, is monitored in real time, and the distribution of resources is automatically adjusted;

[0042] The resource usage of each area is continuously tracked, and dynamic adjustment is performed through a feedback mechanism, the actual consumption of resources and the scheduling effect are analyzed according to real-time data, and it is evaluated whether there is an overuse or insufficient situation of resources, so that the resources can be efficiently utilized under different loads, and response delay or system instability caused by improper resource allocation is avoided.

[0043] The further improvement of the technical scheme of the present application is that the remote control execution module specifically comprises:

[0044] According to the formulated scheduling strategy and resource allocation result, the traffic flow, the sign importance and the resource condition of each area are evaluated, the area in which the display content and brightness of the traffic light-emitting sign need to be adjusted are determined in combination with real-time data, and the control of the sign is ensured to match the demand of overall traffic management;

[0045] According to the scheduling strategy and the analysis result, corresponding remote control instructions are generated, including the display content, brightness adjustment and change timing of the traffic light-emitting sign, and the display content of the sign is dynamically adjusted according to the demand of different areas, so that the information is updated in time and accurately conveyed, wherein the remote instructions are transmitted to each traffic sign device through a high-speed data communication network, so that the real-time and reliability of information transmission are ensured;

[0046] After receiving the remote control instruction, the traffic light-emitting sign will update the state according to the instruction requirements, including brightness adjustment, content change operation, and real-time monitoring of the feedback state of the sign, to ensure that each adjustment takes effect immediately, avoiding traffic management difficulties caused by delay or failure.

[0047] Due to the adoption of the above technical solutions, the present application has the following technical progress compared with the prior art:

[0048] 1. The present application provides a traffic light-emitting sign remote control device and system based on Beidou positioning, which accurately positions the traffic light-emitting sign through Beidou satellite and combines real-time traffic flow data to realize remote real-time control of the traffic sign, greatly improving the efficiency of traffic management, quickly responding to changes in traffic conditions, and timely adjusting the display content and brightness of the sign, providing more timely and accurate road condition information for drivers, and being able to replace or update warning and indication signs in real time according to real-time road condition information, effectively reminding drivers to pay attention to road changes, dangerous sections or traffic control conditions, greatly improving the alertness of drivers and reducing the risk of traffic accidents caused by information lag or lack.

[0049] 2. The present application provides a traffic light-emitting sign remote control device and system based on Beidou positioning, which realizes reasonable allocation and efficient use of system resources through multi-level scheduling strategy and control priority setting, allocates resources preferentially in high-flow areas and important sign areas to ensure that the traffic management needs of key areas are met, and at the same time, the system avoids waste and excessive concentration of resources through real-time monitoring and dynamic adjustment of resource allocation, effectively reducing the cost of traffic management. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0051] Figure 1 It is an appearance schematic view of the traffic light-emitting sign remote control device based on Beidou positioning of the present application.

[0052] Figure 2 It is a system function module schematic view of the present application.

[0053] In the figure: 1, traffic signal controller; 2, signal controller. DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] Example 1, as Figure 1 、 Figure 2 As shown, the present invention provides a remote control device for traffic luminous signs based on Beidou positioning, including a traffic signal controller 1, a signal controller 2 fixedly installed inside the traffic signal controller 1, and an intelligent solar road sign control panel mounted on the signal controller 2. The main parameters of the intelligent solar road sign control panel are: solar charging management, when the battery voltage exceeds the limit, the solar panel charging switch is actively turned off; support for over-discharge protection, when the battery voltage is lower than the limit, the control panel turns off the peripheral discharge to avoid over-discharge; support for solar cell and mains power supply modes, support for multiple battery specifications, lead-acid batteries (6V, 12V, 24V), lithium batteries (7.4V, 11.1V, 22.2V), and select the battery type and power supply through the dip switch Mode; supports up to 2 LED power outputs; supports automatic light sensing control of LED lights, which can be turned on or off remotely (solar panels must be connected to use this function); the LED light flashing mode is configurable and can be configured through remote commands; main power supply (mains power or battery) detection, when a power outage is detected, an alarm will be sent to the background; battery undervoltage alarm; displacement alarm, when the control panel position is detected to be offset, an alarm will be sent to the background; tilt alarm, when the control panel is tilted, an alarm will be sent to the background; the control panel and the background maintain heartbeats, and the background determines whether the control panel is online through the heartbeats; the standby power consumption of the control panel is ≤0.5W (excluding the power consumption of LED lights and the power consumption of transmission when reporting), and the signal controller 2 is integrated with a remote control system for traffic luminous signs;

[0056] In addition, a remote control system for traffic luminous signs based on Beidou positioning is also provided, which is implemented based on a remote control device for traffic luminous signs based on Beidou positioning. The remote control system for traffic luminous signs includes a Beidou positioning module, a signal enhancement processing module, a sign classification module, a multi-level scheduling strategy module, a resource allocation management module, and a remote control execution module, wherein the modules are connected by electrical signals;

[0057] The Beidou positioning module is used for receiving and processing Beidou satellite signals to determine the position of the traffic light-emitting sign. Through accurate positioning, the sign can be accurately marked on the map and in the system. The Beidou positioning module captures signals from multiple Beidou satellites through its built-in high-sensitivity receiving antenna and calculates the propagation time of the signals. The Beidou satellite signals contain satellite orbit information and time marker information. After receiving the signals, the Beidou positioning module decodes them using the built-in decoding unit to extract satellite navigation data, including the satellite's position and clock error. The decoded satellite navigation data is further processed by calculating the propagation time difference of multiple satellite signals to the receiver, combining the known positions of the satellites, and using the triangulation principle to calculate the position of the traffic light-emitting sign relative to the satellites and output it in the form of latitude and longitude coordinates. After the positioning calculation is completed, the Beidou positioning module compares and marks the output latitude and longitude data with the actual position of the traffic light-emitting sign. Through the fusion of internal map data and real-time positioning information, the accurate marking of the sign on the map is ensured, and the position data is uploaded to the traffic management system map in real time to ensure that the sign in the system reflects its true and accurate position.

[0058] The signal enhancement processing module is used to enhance and process the received Beidou signals, reduce the influence of signal attenuation and multipath effect, improve positioning accuracy, and reduce positioning errors caused by signal problems. The signal enhancement processing module preprocesses the received Beidou satellite signals, including denoising and filtering operations. By filtering out high-frequency noise and interference signals, it retains the effective satellite signal components, reduces the influence of signal attenuation, and makes the received signals more pure. It uses multipath effect suppression technology to analyze and process the multipath components in the signal. Through analysis of signal arrival time and path, it uses signal processing technology (spectrum analysis) to distinguish direct signals from reflected signals. Through adaptive filtering signal processing technology, it eliminates the multipath interference caused by signal reflection and refraction, reduces the negative impact of multipath effect on positioning accuracy, and significantly improves the accuracy of positioning in complex environments. Direct signals usually have the shortest propagation path and the strongest signal strength. Reflected signals have longer propagation paths, weaker signal strength, and delayed arrival time. By optimizing signal parameters and enhancing signal strength, the filtered and multipath-suppressed signals are enhanced for further improvement in signal quality and reduction in positioning errors caused by signal problems, allowing them to be more clearly decoded and processed in the receiver.

[0059] The sign classification module is used to monitor traffic flow and analyze the importance of traffic light-emitting signs by combining their positions and their impact on traffic flow. It divides the signs into different importance levels to allocate control priorities.

[0060] A multi-level scheduling strategy module is configured to implement a multi-level scheduling strategy according to traffic flow and sign importance, optimize system resource allocation, reduce positioning response delay, and improve real-time performance and efficiency of remote control;

[0061] A resource allocation management module is configured to dynamically allocate and manage system resources according to the multi-level scheduling strategy and control priority, ensure stable operation of the system under high load, and reduce response delay caused by insufficient resources;

[0062] A remote control execution module is configured to remotely control display content and brightness of traffic light-emitting signs according to the scheduling strategy and resource allocation result, realize real-time updating and control of traffic signs, and improve flexibility and efficiency of traffic management.

[0063] In embodiment 2, as shown in the following table, on the basis of embodiment 1, the present application provides a technical solution: Figure 1 、 Figure 2 Preferably, the sign classification module includes a traffic flow monitoring unit and an importance evaluation unit.

[0064] The traffic flow monitoring unit is configured to monitor traffic flow in real time, analyze traffic congestion and traffic density information, distinguish high-flow areas and low-flow areas, and provide real-time traffic data support for the scheduling strategy. The traffic flow data is collected in real time by sensors, cameras, geomagnetic sensors, and radars deployed in advance on the road, and vehicle speed, number, and traffic density information are analyzed. The vehicle speed is measured by radar to measure the speed of vehicles passing a certain point, the number of vehicles is counted by camera to count the number of vehicles passing a certain section in a unit of time, and the traffic density is calculated by combining the number of vehicles and the length of the section to calculate the number of vehicles on a unit length of road. The vehicle speed, number, and traffic density are dynamically analyzed to calculate the interval time and speed distribution of vehicles, analyze the traffic state of each monitoring section, and identify the relative change trend of traffic flow using pattern recognition technology. The interval time of vehicles refers to the time difference between adjacent vehicles passing the same detection point. The historical data of the monitoring section in the past three months is analyzed, the traffic flow characteristics in different time periods (working days, weekends, and holidays) are counted, and a flow threshold is set to distinguish high-flow areas and low-flow areas. Then, according to the traffic state analysis result of the monitoring section, the road is divided into different flow areas, and the traffic flow characteristic index of each area is calculated to determine the flow area type to which the area belongs. In the high-flow area, the vehicle speed decreases and the traffic density increases, and in the low-flow area, the vehicle speed is fast and the vehicles are sparse.

[0065] The relative change trend of traffic flow is expressed as follows:

[0066]

[0067] wherein ΔV(t) is the relative change trend of traffic flow at time t, used to measure the degree of change of traffic flow relative to the baseline value, V i (t) is the average speed of vehicles at the i-th monitoring section at time t, V base is the baseline speed value, which is a reference speed set according to traffic management needs, Q i (t) is the number of vehicles at the i-th monitoring section at time t, Q total (t) is the sum of the number of vehicles at all monitoring sections at time t, and n is the number of monitoring sections, when ΔV(t) approaches 0, it indicates that the change trend of traffic flow is small, i.e., the traffic condition is relatively stable, when ΔV(t) is large, it indicates that the change trend of traffic flow is significant, i.e., the traffic condition has changed significantly, if the traffic flow gradually increases and the vehicle speed gradually decreases, then the value of ΔV(t) will gradually increase, indicating that the traffic congestion trend is intensifying, if the traffic flow gradually decreases and the vehicle speed gradually increases, then the value of ΔV(t) will gradually decrease, indicating that the traffic condition is gradually improving, if the traffic flow and vehicle speed remain relatively stable, then the value of ΔV(t) will also be relatively stable, indicating that the traffic condition has no significant change trend;

[0068] traffic flow characteristic index, whose expression is as follows:

[0069]

[0070] wherein F j is the traffic flow characteristic index of the j-th region, used to measure the deviation of the traffic flow characteristic of the region relative to the baseline value, T is the total number of time units in the analysis period, representing the total number of time units in the past three months, Q j (k) is the number of vehicles in the j-th region in the k-th time unit, Q base，j is the baseline number of vehicles in the j-th region, which is set according to traffic management needs, V j (k) is the average speed of vehicles in the j-th region in the k-th time unit, V ref，j is the reference speed of the j-th region, which is the expected speed of the region, D j (k) is the traffic density (i.e., the number of vehicles per unit length of road) in the j-th region in the k-th time unit, D avg，j is the average traffic density of the j-th region, when F j approaches 0, it indicates that the traffic flow characteristic of the region is relatively stable and does not deviate much from the baseline value or reference value, when F j is large, it indicates that the traffic flow characteristic of the region has changed significantly, in a high-flow region, due to the increase in the number of vehicles, the decrease in vehicle speed, and the increase in traffic density, therefore Q j(k) increase, V j (k) decrease, D j (k) increase, resulting in F j increases, in the low-flow region, there are fewer vehicles, and the vehicles travel faster, so Q j (k) increase, V j (k) increase (or remain unchanged but relatively high), D j (k) decrease, resulting in F j decreases;

[0071] The importance evaluation unit is configured to determine the influence of the traffic light-emitting sign on traffic fluency according to preset standards, evaluate the importance of the traffic light-emitting sign in combination with the location of the traffic light-emitting sign, determine the importance level of the traffic light-emitting sign, collect detailed information of the traffic light-emitting sign, including the type of the sign (indicating sign, warning sign, prohibition sign), specific location (latitude and longitude coordinates, name of the road segment and location description), function (providing road condition information, guiding traffic flow direction, warning of danger) and current working state (normal, fault, maintenance), and obtain index data of traffic flow, vehicle speed and congestion time before and after the traffic light-emitting sign is set on the monitoring road segment, in combination with the index data of traffic flow, vehicle speed and congestion time before and after the traffic light-emitting sign, and preset evaluation standards of reduction of congestion time, calculate a fluency influence index, comprehensively evaluate the influence degree of the traffic light-emitting sign on traffic fluency, divide the sign into different sign levels according to the size of the influence degree, and respectively into a key sign level, an important sign level and a general sign level, and assign corresponding division thresholds to each sign level, and then determine the importance level of the traffic light-emitting sign according to the evaluation result, wherein the general sign level refers to a sign that has a certain influence on traffic fluency but has relatively limited effect on reducing congestion time.

[0072] The fluency influence index is expressed as follows:

[0073]

[0074] In the formula, FLI is the fluency influence index, which is used to measure the comprehensive influence degree of the traffic light-emitting sign on traffic fluency, V after is the average vehicle speed (km / h) after the traffic light-emitting sign is set, V before is the average vehicle speed (km / h) before the traffic light-emitting sign is set, Q after is the traffic flow (number of vehicles / hour) after the traffic light-emitting sign is set, Q before is the traffic flow (number of vehicles / hour) before the traffic light-emitting sign is set, ΔT r is the congestion time reduction percentage, T before is the congestion time before setting, and T afterTo set the post-congestion time, when FLI is close to 0, it shows that the traffic light sign has little effect on traffic flow smoothness, when FLI is large, it shows that the traffic light sign significantly improves the traffic flow smoothness, when V after increases, Q after increases (and the increase amplitude is relatively large with respect to Q before , ΔT r increases, the value of FLI increases, showing that the traffic light sign has a more significant effect on improving traffic flow smoothness, when V after decreases, Q after decreases (or the increase amplitude is small), ΔT r decreases, the value of FLI decreases, showing that the traffic light sign has a limited effect on improving traffic flow smoothness;

[0075] The plurality of sign levels correspond to the plurality of division thresholds in a one-to-one manner, and the corresponding relationship is as follows:

[0076] The division threshold of the key sign level is: FLI≥BZ1;

[0077] The division threshold of the important sign level is: BZ2≤FLI<BZ1;

[0078] The division threshold of the general sign level is: 0<FLI<BZ2;

[0079] In the formula, FLI is the flow smoothness influence index, BZ1 is the lower threshold of the key sign level and the upper threshold of the important sign level, and BZ2 is the lower threshold of the important sign level and the upper threshold of the general sign level;

[0080] The multi-level scheduling strategy module specifically includes:

[0081] Through the traffic flow monitoring unit and the sign importance evaluation unit, real-time collection of traffic flow data on the road and state information of the traffic light sign is performed, and then high-flow or low-flow areas are identified, and the scheduling demand of different road sections is evaluated in combination with the importance level of the sign. According to the traffic flow, the importance of the sign, and the characteristics of the road section, different priorities are set, a higher priority is given to a high-flow area or a road section with high importance of the sign, and a multi-level scheduling strategy is planned according to the given priority, so that resources can be effectively allocated to the most needed area, so that a road section with serious traffic congestion can be given priority in the scheduling strategy to reduce traffic delay and optimize flow distribution. According to the set priority and scheduling strategy, real-time scheduling is implemented, and high-flow and important sign areas are scheduled and processed through dynamic adjustment of signal timing, lane guidance, and traffic control means. Among them, the signal timing is dynamically adjusted to optimize traffic flow smoothness, lane guidance information is provided to guide vehicles to reasonably distribute, and temporary lane closure, setting of detour routes, and traffic control means are adopted;

[0082] The resource allocation management module specifically includes:

[0083] In combination with the multi-level scheduling strategy and the control priority, by real-time monitoring of traffic flow, sign importance and road section state data, the resource consumption in different areas is analyzed, the resource demand of each period and area is estimated in high-flow and important sign areas, the resource allocation is ensured to be forward-looking and accurate, different levels of resources are allocated to each area and task according to the priority setting in the scheduling strategy, more computing power and network bandwidth are preferentially allocated in high-flow areas or important sign areas, the dynamic allocation mechanism ensures that the resources can respond to traffic condition changes in real time, the use of system resources is monitored in real time, including server load, network bandwidth and storage space, and the distribution of resources is automatically adjusted to avoid overload or response delay due to insufficient resources in a single node or area, when a resource pool is close to saturation, a backup resource pool is automatically started or the resource priority is adjusted to ensure the efficient operation and stability of the system, reduce the risk caused by excessive concentration of resources, continuously track the resource usage of each area, and dynamically adjust through a feedback mechanism, according to the real-time data analysis of the actual consumption and scheduling effect of resources, whether there is excessive or insufficient resources is evaluated to ensure that resources can be efficiently utilized under different loads, and response delay or system instability caused by improper resource allocation is avoided;

[0084] The remote control execution module specifically includes:

[0085] According to the formulated scheduling strategy and resource allocation result, the traffic flow, sign importance and resource status of each area are evaluated, the areas requiring adjustment of the display content and brightness of the traffic light-emitting sign are determined in combination with real-time data, and the control of the sign is ensured to match the overall traffic management demand, according to the scheduling strategy and analysis result, corresponding remote control instructions are generated, including the display content, brightness adjustment and change timing of the traffic light-emitting sign, and the display content of the sign is dynamically adjusted according to the demand of different areas to ensure timely updating and accurate transmission of information, wherein the remote instructions are transmitted to each traffic sign device through a high-speed data communication network to ensure the real-time and reliability of information transmission, after receiving the remote control instructions, the traffic light-emitting sign will update the state according to the instructions, including brightness adjustment, content change operation, and real-time monitoring of the feedback state of the sign to ensure that each adjustment takes effect immediately, avoiding traffic management inconvenience caused by delay or failure, at the same time, through continuous data monitoring, problems in sign updating are found out, and corrective measures are taken quickly to ensure the accuracy and timeliness of the traffic sign display.

[0086] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A traffic luminous sign remote control system based on Beidou positioning, integrated in a traffic luminous sign remote control device based on Beidou positioning, comprising a traffic signal controller (1), a signal controller (2) fixedly installed inside the traffic signal controller (1), and a traffic luminous sign remote control system integrated inside the signal controller (2), characterized in that: The traffic luminous sign remote control system includes a Beidou positioning module, a signal enhancement processing module, a sign classification module, a multi-level scheduling strategy module, a resource allocation management module and a remote control execution module, wherein the modules are connected by electrical signals; The Beidou positioning module is used to receive and process Beidou satellite signals to determine the location of traffic luminous signs; The signal enhancement and processing module is used to enhance and process the received Beidou signal; The sign classification module is used to monitor traffic flow and analyze the importance of traffic luminous signs based on their location and their impact on traffic flow, and classify them into different importance levels to assign control priorities. The sign classification module includes a traffic flow monitoring unit and an importance assessment unit; The traffic flow monitoring unit is used to monitor traffic flow in real time, analyze traffic congestion and traffic density information, and distinguish high-flow areas from low-flow areas; The importance evaluation unit is used to determine the impact of traffic luminous signs on traffic flow according to preset standards, and evaluate the importance of traffic luminous signs in combination with their locations to determine the importance level of traffic luminous signs, specifically including: Collect detailed information about traffic signs, including their type, location, function, and current operating status, and obtain traffic flow, speed, and congestion time indicators before and after the installation of traffic signs on the monitored road sections; The traffic flow impact index is calculated based on the traffic flow, vehicle speed and congestion time data before and after the installation of traffic luminous signs on the monitored road section, as well as the preset evaluation criteria for congestion time reduction, to comprehensively evaluate the impact of traffic luminous signs on traffic flow. According to the degree of impact, the signs are divided into different sign levels, namely key sign level, important sign level and general sign level, and corresponding classification thresholds are assigned to each sign level. Then, based on the evaluation results, the importance level of traffic luminous signs is determined; The multi-level scheduling strategy module is used to implement a multi-level scheduling strategy based on traffic flow and sign importance; The resource allocation management module is used to dynamically allocate and manage system resources according to multi-level scheduling strategies and control priorities; The remote control execution module is used to remotely control the display content and brightness of the traffic luminous sign according to the multi-level scheduling strategy and resource allocation results.

2. The remote control system for traffic luminous signs based on Beidou positioning according to claim 1 is characterized by: The Beidou positioning module specifically includes: The BeiDou positioning module captures signals from multiple BeiDou satellites through its built-in high-sensitivity receiving antenna and calculates the signal propagation time. The BeiDou satellite signals contain the satellite's orbit information and time stamp information. The Beidou positioning module uses a built-in decoding unit to decode the signal and extract satellite navigation data, including the satellite's position and clock error; The decoded satellite navigation data is further processed by calculating the propagation time difference between multiple satellite signals and the receiver. Combined with the known positions of the satellites, the position of the traffic sign relative to the satellite is calculated using the principle of triangulation and output in the form of latitude and longitude coordinates. After the positioning calculation is completed, the latitude and longitude coordinates output by the Beidou positioning module are compared and calibrated with the actual position of the traffic light sign, and then the calibrated location data is uploaded to the map of the traffic management system in real time.

3. The remote control system for traffic luminous signs based on Beidou positioning according to claim 2 is characterized by: The signal enhancement processing module specifically includes: The signal enhancement processing module pre-processes the received Beidou satellite signals, including denoising and filtering operations; Adopting multipath effect suppression technology, the multipath components in the signal are analyzed and processed. By analyzing the signal arrival time and path, the direct signal and the reflected signal are distinguished by signal processing technology. The multipath interference caused by signal reflection and refraction is eliminated by adaptive filtering signal processing technology. The signal that has been filtered and multipath suppressed is enhanced by optimizing signal parameters and increasing signal strength.

4. The remote control system for traffic luminous signs based on Beidou positioning according to claim 1 is characterized by: The traffic flow monitoring unit specifically includes: Through pre-deployed cameras, geomagnetic sensors and radars on the road, traffic flow data is collected in real time to analyze vehicle speed, number and traffic density; Dynamically analyze vehicle speed, number, and traffic density, calculate vehicle intervals and speed distribution, analyze traffic conditions on each monitored road section, and use pattern recognition technology to identify relative trends in traffic flow. The vehicle interval, or the time difference between adjacent vehicles passing the same detection point, is used. The historical data of the monitored section for the past three months is analyzed, the traffic flow characteristics of different time periods are counted, and traffic thresholds are set to distinguish high-flow areas from low-flow areas. Then, based on the traffic status analysis results of the monitored section, the road is divided into different flow areas, and the traffic flow characteristic index of each area is calculated to determine the flow area type to which the area belongs.

5. The remote control system for traffic luminous signs based on Beidou positioning according to claim 1 is characterized by: The multi-level scheduling strategy module specifically includes: Traffic flow monitoring units and importance assessment units collect real-time traffic flow data and traffic sign status information on the road, thereby identifying high-flow or low-flow areas and, based on the importance level of the signs, assessing the dispatching needs of different road sections. Set different priorities based on traffic flow, sign importance, and road section characteristics, and plan multi-level scheduling strategies based on the assigned priorities; Real-time scheduling is implemented based on set priorities and multi-level scheduling strategies, and high-traffic areas and important sign areas are dispatched and processed by dynamically adjusting signal light timing, lane guidance and traffic control measures.

6. The remote control system for traffic luminous signs based on Beidou positioning according to claim 5 is characterized by: The resource allocation management module specifically includes: Combining multi-level scheduling strategies and control priorities, by monitoring traffic flow, sign importance, and road status data in real time, we analyze resource consumption in different areas and estimate resource requirements for each time period and area in high-traffic areas and important sign areas. Allocate different levels of resources to various areas and tasks based on the priority settings in the multi-level scheduling strategy; Monitor the usage of system resources in real time, including server load, network bandwidth, and storage space, and automatically adjust the distribution of resources; Continuously track resource usage in each area and make dynamic adjustments through feedback mechanisms. Analyze actual resource consumption and scheduling effects based on real-time data to assess whether there is an over- or under-use of resources.

7. The remote control system for traffic luminous signs based on Beidou positioning according to claim 6 is characterized by: The remote control execution module specifically includes: Analyze established scheduling strategies and resource allocation results, assess traffic flow, sign importance, and resource availability in each area, and, combined with real-time data, determine areas where traffic sign display content and brightness need to be adjusted. Generate corresponding remote control instructions based on the scheduling strategy and analysis results, including the display content, brightness adjustment and change timing of traffic luminous signs, and dynamically adjust the display content of the signs according to the needs of different areas; After receiving the remote control command, the traffic light sign will update its status according to the command requirements, including brightness adjustment and content change operations.

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