Traffic control method and device based on power line carrier, and medium

Abstract

The embodiment of the invention discloses a traffic control method and device based on power line carrier, and a medium, which are applied to the technical field of intelligent traffic and are used for providing a traffic control method for unified management, and the method comprises the following steps: a first power line carrier communication module carries out power line carrier communication on the basis of a power supply line between a roadside subsystem and an external field direct connection subsystem; receiving the multi-source real-time traffic data uploaded by the second power line carrier communication module, and transmitting the multi-source real-time traffic data to the edge calculation module based on the communication interface module; the edge calculation module preprocesses the multi-source real-time traffic data and performs data fusion on the processed multi-source real-time traffic data according to a preset immune clustering neural network to obtain fused traffic data; the communication module transmits the fused traffic data to the central subsystem; and the central subsystem generates corresponding business data based on the fused traffic data, and transmits the business data to each external field subsystem for traffic control based on the power line carrier communication module.

Description

Technical Field

[0001] This specification relates to the field of intelligent transportation technology, and in particular to a traffic control method, device and medium based on power line carrier. Background Art

[0002] With the rapid development of the economy, the number of motor vehicles has increased dramatically, and the existing road traffic resources are gradually unable to meet the growing travel needs. Problems such as traffic congestion, frequent traffic accidents, and traffic environmental pollution have become increasingly prominent, bringing huge challenges to people's daily lives and the sustainable development of cities. In order to effectively alleviate these traffic problems, the Intelligent Transportation System (ITS) came into being and became one of the effective ways to solve the current problems of urban traffic.

[0003] However, in the traditional intelligent traffic control system architecture, field equipment such as traffic detection equipment, traffic control equipment and traffic information release subsystems usually adopt the system's own independent management and communication methods, and upload their own data through the roadside network unit, so as to support the central system control strategy execution, status monitoring and other business functions. At the same time, the control data of the central platform is also sent to each subsystem through the communication link of each subsystem. The diversity of subsystems makes the architecture of traffic signal control system complex, and the business isolation between each subsystem makes it impossible to achieve effective interaction of data from different devices at the intersection level and efficient and unified management of multi-source data, which has an adverse impact on intersection data fusion and even the subsequent application of vehicle-road collaborative technology. Therefore, there is a need for an efficient traffic control method that can isolate field equipment from the central platform. Summary of the invention

[0004] In order to solve the above technical problems, one or more embodiments of this specification provide a traffic control method, device and medium based on power line carrier.

[0005] One or more embodiments of this specification adopt the following technical solutions:

[0006] One or more embodiments of the present specification provide a traffic control method based on power line carrier, which is applied to a middleware traffic system composed of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power line carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power line carrier communication module, and the method includes:

[0007] The first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, and transmits the multi-source real-time traffic data to the edge computing module based on the communication interface module;

[0008] The edge computing module preprocesses the multi-source real-time traffic data to obtain processed multi-source real-time traffic data, and performs data fusion on the processed multi-source real-time traffic data according to a preset immune clustering neural network to obtain fused traffic data;

[0009] The communication module transmits the fused traffic data to the central subsystem based on a corresponding communication method;

[0010] The central subsystem generates corresponding business data based on the integrated traffic data, and transmits the business data to each of the outfield subsystems for traffic control based on the first power carrier communication module and the second power carrier communication module.

[0011] Optionally, in one or more embodiments of the present specification, before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method further includes:

[0012] The power supply module built into the external field direct connection subsystem converts the AC power of the power supply line based on a transformer device, so as to supply power to the first power carrier communication module and the communication interface module built into the external field direct connection subsystem according to the converted DC power, so as to maintain the operation of the first power carrier communication module and the communication interface module built into the external field direct connection subsystem;

[0013] The communication interface module built into the outfield direct connection subsystem acquires multi-source real-time traffic data collected by each of the outfield subsystems; wherein the communication interface module built into the outfield direct connection subsystem corresponds one-to-one with the outfield subsystem, and the outfield subsystem includes: a traffic control system, a traffic collection system, and an information release system;

[0014] The first power carrier communication module receives multi-source real-time traffic data collected by each external field subsystem based on the communication interface module, and encodes the multi-source real-time traffic data to attach the multi-source real-time traffic data to the power supply line between the roadside subsystem and the external field direct connection subsystem.

[0015] Optionally, in one or more embodiments of the present specification, before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method further includes:

[0016] The built-in network management module of the roadside subsystem performs network configuration on the edge computing module, the communication module and the power carrier communication module; wherein the network management module is connected to the communication interface module and the built-in power supply module of the roadside subsystem;

[0017] Preferably, the built-in network management module of the roadside subsystem performs network configuration on the edge computing module, the communication module and the power carrier communication module, specifically including:

[0018] The network management module performs network configuration on the multi-processing units of the edge computing module based on the TCP / IP protocol;

[0019] The network management module sets a corresponding communication module based on the interface protocol corresponding to the communication interface module, and associates and configures the internal data interface and the external interaction interface of the communication module;

[0020] The network management module configures the link relationship between the power carrier communication modules based on the physical layer address.

[0021] Optionally, in one or more embodiments of the present specification, the edge computing module preprocesses the multi-source real-time traffic data to obtain processed multi-source real-time traffic data, specifically including:

[0022] Decoding the multi-source real-time traffic data based on the edge computing module to obtain decoded multi-source real-time traffic data;

[0023] Performing data cleaning on the decoded multi-source real-time traffic data to obtain cleaned multi-source real-time traffic data;

[0024] The data format of the decoded multi-source real-time traffic data is identified, and the data format of the multi-source real-time traffic data is converted according to the data input format of the preset immune clustering neural network to obtain processed multi-source real-time traffic data.

[0025] Optionally, in one or more embodiments of the present specification, before performing data fusion on the processed multi-source real-time traffic data according to a preset immune clustering neural network and obtaining the fused traffic data, the method further includes:

[0026] The edge computing module obtains a historical traffic data set, and performs data preprocessing on each data in the historical traffic data set, so as to divide the processed historical traffic data set based on a preset ratio to obtain a training data set and a test data set;

[0027] Dividing the training data set based on preset intervals to obtain multiple initial populations corresponding to the training set data; wherein the historical traffic data in each of the initial populations is used as an antibody;

[0028] Calculating the fitness of each antibody in each of the initial populations, selecting a corresponding antibody according to the fitness value, cloning to obtain a similar antibody corresponding to the corresponding antibody, and performing a move operation and a crossover operation according to the similar antibody to obtain a newly added antibody population;

[0029] Iterating the process of acquiring the newly added antibody population to select the antibody with the highest fitness as the best clustering center to cluster the training data set, and determining the number of network hidden layers and the number of neurons in each layer according to the clustering results to obtain an initial network structure;

[0030] According to the clonal selection and immune memory mechanism, the network structure is iteratively optimized to obtain an optimized network structure, and the optimized network structure is evaluated based on the test set data, and a preset immune clustering neural network that meets the requirements is determined according to the evaluation results.

[0031] Optionally, in one or more embodiments of the present specification, the communication module transmits the fused traffic data to the central subsystem based on a corresponding communication method, specifically including:

[0032] Determine the communication mode corresponding to the current communication module according to the interface protocol corresponding to the communication interface module; wherein the communication mode includes: wired communication and wireless communication;

[0033] If the communication mode is wireless communication, based on the built-in wireless communication module of the communication module, the fused traffic data is wirelessly transmitted to the built-in first network switch of the central subsystem, so that the fused traffic data is transmitted to the built-in central platform of the central subsystem according to the first network switch;

[0034] If the communication mode is wired communication, based on the built-in wired communication module in the communication module, the fused traffic data is transmitted to the second network switch based on network port communication;

[0035] The second network switch transmits the fused traffic data to the built-in second fiber optic transceiver of the central subsystem based on the first fiber optic transceiver, so that the second fiber optic transceiver transmits the fused traffic data to the built-in central platform of the central subsystem through the first network switch.

[0036] Optionally, in one or more embodiments of this specification, the method further includes:

[0037] Performing time calibration on the one or more outfield subsystems, the middleware subsystem, and the central subsystem according to the built-in location timing service module of the roadside subsystem;

[0038] Preferably, the time calibration of the one or more outfield subsystems, the middleware subsystem and the central subsystem according to the built-in location timing service module of the roadside subsystem specifically includes:

[0039] Receiving satellite signals from the GNSS according to the location timing service module to obtain time information based on the satellite signal analysis;

[0040] The location timing service module generates a time calibration instruction based on the time information, and transmits the time calibration instruction to the one or more external field subsystems, the middleware subsystem and the central subsystem based on the power supply line for time calibration.

[0041] Optionally, in one or more embodiments of the present specification, transmitting the service data to each of the outfield subsystems for traffic control based on the first power line carrier communication module and the second power line carrier communication module specifically includes:

[0042] The central platform transmits the service data to the first power carrier communication module through the communication module, so as to encode the service data based on the first power carrier communication module to obtain the encoded service data;

[0043] The first power carrier communication module transmits the encoded business data to the second power carrier communication module based on the power supply line, so that the second power carrier communication module transmits the encoded business data to each of the outfield subsystems based on the power supply line;

[0044] The outfield subsystem parses the encoded business data so that each outfield subsystem performs traffic control based on the business data.

[0045] One or more embodiments of the present specification provide a traffic control device based on power line carrier, which is applied to a middleware traffic system composed of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power line carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power line carrier communication module, and the device includes:

[0046] at least one processor; and,

[0047] a memory communicatively connected to the at least one processor; wherein,

[0048] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: execute any of the above-mentioned traffic control methods based on power line carrier.

[0049] One or more embodiments of the present specification provide a non-volatile computer storage medium storing computer executable instructions, which are applied to a middleware traffic system composed of one or more external field subsystems, a middleware subsystem connected to the one or more external field subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an external field direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the external field direct connection subsystem includes: a second power carrier communication module, and the computer executable instructions are configured to be able to: execute any of the above-mentioned power carrier-based traffic control methods.

[0050] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0051] The middleware subsystem is used to isolate the outfield subsystem and the central subsystem. The management business data issued by the center is distributed through the middleware subsystem. The status data and traffic detection data uploaded by the outfield equipment are uniformly uploaded through the middleware subsystem. The unified management of the outfield subsystem based on the roadside subsystem and the outfield direct connection subsystem in the middleware subsystem is realized. It not only realizes the unified aggregation and management of data and improves management efficiency, but also breaks through the data barriers between different outfield subsystems and realizes data interaction and sharing at the intersection layer. In addition, the power carrier technology is used to realize data transmission between the roadside subsystem, the middleware subsystem and the central subsystem, avoiding the laying of additional communication lines and reducing the complexity and cost of system construction. The edge computing module of the middleware subsystem makes data processing more flexible and efficient, and preliminary data processing and analysis can be performed locally to reduce the burden on the central subsystem. The preset immune clustering neural network can intelligently analyze and integrate data to improve the accuracy and reliability of traffic data. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. In the drawings:

[0053] Figure 1 A flow chart of a traffic control method based on power line carrier provided in an embodiment of this specification;

[0054] Figure 2 A schematic diagram of the structure of a middleware traffic system provided in an embodiment of this specification;

[0055] Figure 3 A schematic diagram of the structure of a traffic control device based on a power line carrier provided in an embodiment of this specification;

[0056] Figure 4 A schematic diagram of the structure of a non-volatile storage medium provided in an embodiment of this specification. DETAILED DESCRIPTION

[0057] The embodiments of this specification provide a traffic control method, device and medium based on power line carrier.

[0058] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0059] like Figure 1 As shown, the embodiment of this specification provides a flow chart of a traffic control method based on power line carrier. Figure 1 It can be seen that in one or more embodiments of this specification, a traffic control method based on power line carrier is applied to Figure 2 The middleware traffic system shown is composed of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power carrier communication module, and the method includes the following steps:

[0060] S101: The first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, and transmits the multi-source real-time traffic data to the edge computing module based on the communication interface module.

[0061] In order to be able to isolate the outfield subsystem and the central subsystem based on middleware technology, in the embodiment of this specification, the first power carrier communication module in the middleware subsystem receives the multi-source real-time traffic data collected by each outfield subsystem uploaded by the second power carrier communication module according to the power supply line between the roadside subsystem and the outfield direct-connection subsystem, and then transmits the multi-source real-time traffic data to the edge computing module according to the communication interface module of the roadside subsystem. In this process, data transmission is carried out based on the power carrier method, which greatly reduces the dependence of outfield equipment on network cables, avoids the need to lay additional communication lines, reduces construction costs, and improves maintenance efficiency. In addition, the middleware subsystem can receive multi-source real-time traffic data from multiple outfield subsystems, realizes the integration and unified management of multi-source data, and provides comprehensive data support for subsequent data analysis and decision-making.

[0062] In addition, it should be noted that the external field subsystem mainly includes traffic control system, traffic collection system and information release system. Among them, the traffic control system mainly includes traffic signal machines and other roadside terminal equipment with traffic control functions. The traffic collection system is a real-time traffic flow data detection device for roads, including geomagnetic, radar, radar, video, laser radar, infrared sensors and other current mainstream traffic detection methods and systems. The information release system provides travelers with traffic control and other traffic information services, including traffic lights, induction screens, strip screens and other sound and light traffic information release terminals and systems.

[0063] Further, in one or more embodiments of the present specification, before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method further includes:

[0064] The power supply module built into the external field direct connection subsystem converts the AC power of the power supply line based on the transformer device, so as to supply power to the first power carrier communication module and the communication interface module built into the external field direct connection subsystem according to the converted DC power, so as to maintain the operation of the first power carrier communication module and the communication interface module built into the external field direct connection subsystem. Then, the communication interface module built into the external field direct connection subsystem obtains the multi-source real-time traffic data collected by each external field subsystem. Based on the communication interface module, the first power carrier communication module receives the multi-source real-time traffic data collected by each external field subsystem, and encodes the multi-source real-time traffic data, thereby attaching the multi-source real-time traffic data to the power supply line between the roadside subsystem and the external field direct connection subsystem. That is to say, the power carrier communication module can receive the signal attached to the power supply line from the external field subsystem, parse it, and convert it into business data. On the other hand, it can also encode the business data sent by the central platform or the data generated by the edge computing module, and attach the relevant data signal to the power supply line and send it to the external field subsystem.

[0065] Among them, Figure 2It can be understood from the figure that the communication interface module built into the outfield direct connection subsystem corresponds one-to-one with the outfield subsystem. That is, the roadside subsystem also includes a power supply module. On the one hand, the power supply module receives a 220V AC power supply from the mains and interconnects it with the outfield part to provide power support for the outfield subsystem. On the other hand, through the transformer, the 220V AC power is converted into 12V / 5V / 3V and other DC weak currents to provide power support for the power carrier communication module, communication interface module, GNSS position and timing service module, edge computing module, network management module, wireless communication module and wired communication module. The communication interface module is a hardware interface that meets the data transmission requirements of different roadside third-party systems, including 485, 422, 232, RJ45, CAN, etc. All interfaces are integrated in the same board to support multi-device access.

[0066] Furthermore, in order to solve the network communication problems, data interaction problems and compatibility problems between different communication interface modules in the middleware traffic system. In one or more embodiments of this specification, before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method also includes the following process:

[0067] The network configuration of the edge computing module, the communication module and the power carrier communication module is performed through the built-in network management module of the roadside subsystem; that is, the roadside subsystem in the embodiment of this specification also includes a network management module, and Figure 2 The network management module shown is connected to the communication interface module and the built-in power supply module of the roadside subsystem.

[0068] Preferably, the built-in network management module of the roadside subsystem performs network configuration on the edge computing module, the communication module and the power carrier communication module, specifically including:

[0069] The network management module adopts the routing management mode based on the TCP / IP protocol to configure the network of the multi-processing units of the edge computing module, thereby solving the network communication problem between the multi-processor units, realizing the effective management and utilization of the internal resources of the edge computing module, and improving the overall performance and response speed of the system. It should be noted here that during the configuration process, the network management module will consider the network topology of the edge computing module, such as star, bus or ring, to ensure that data can be transmitted efficiently and reliably.

[0070] In addition, the network management module sets the corresponding communication module based on the interface protocol corresponding to the communication interface module, and associates and configures the internal data interface of the communication module with the external interaction interface, thereby realizing the data transparent transmission function, that is, the internal data interface is the connection point between the communication module and the edge computing module or other internal components, while the external interaction interface is the connection point between the communication module and the external network or device. The network management module will ensure the correct association between the two interfaces to achieve seamless data transmission. On the other hand, the routing addresses of the wireless and wired communication modules can also be configured based on the TCP / IP protocol to achieve data interaction with the central subsystem.

[0071] The network management module also configures the link relationship between each power carrier communication module based on the physical layer address, including the communication path and data transmission rate between them, to achieve data transparent transmission between power carrier communication modules, and supports one-to-one single-point transmission, one-to-many multicast transmission and broadcast transmission modes. In the above process, the network management module function is used to achieve link construction based on physical addresses, transparent transmission of data from different devices, and data transmission isolation between different devices, which helps to give full play to the functions of each device in each field subsystem.

[0072] Furthermore, in order to meet the application of intelligent transportation systems in application scenarios with high time accuracy requirements, in one or more embodiments of this specification, Figure 2 As shown, the roadside subsystem also includes a location and timing service module, that is, a GNSS location and timing service module. On this basis, the method also includes:

[0073] The time calibration of one or more outfield subsystems, middleware subsystems and the central subsystem is performed according to the built-in location timing service module of the roadside subsystem. Specifically, the time calibration of one or more outfield subsystems, middleware subsystems and the central subsystem is performed according to the built-in location timing service module of the roadside subsystem, specifically including:

[0074] According to the location timing service module, the satellite signal from the GNSS is received to obtain the time information based on the satellite signal analysis. Then the location timing service module generates a time calibration instruction based on the obtained time information, and transmits the time calibration instruction to the one or more field subsystems, the middleware subsystem and the central subsystem based on the power supply line for time calibration. In addition, the module can also use single-mode or multi-mode positioning systems such as Beidou, GPS, GLONASS, Galileo, etc. to collect the longitude and latitude coordinates of the installation location of the system equipment. Through the above process, it is possible to provide high-precision time calibration services to ensure the time synchronization accuracy of the entire system.

[0075] S102: The edge computing module preprocesses the multi-source real-time traffic data to obtain processed multi-source real-time traffic data, and performs data fusion on the processed multi-source real-time traffic data according to a preset immune clustering neural network to obtain fused traffic data.

[0076] In order to complete the fusion processing of multi-source real-time traffic data on the road side and reduce the processing pressure of the central platform, a multi-source data fusion process based on the middleware is proposed based on the edge computing module in the embodiment of this specification. First, the multi-source real-time traffic data obtained by the first power carrier communication module in the above step S101 is pre-processed to obtain the processed multi-source real-time traffic data, and the processed multi-source real-time traffic data is fused according to the preset immune clustering neural network to obtain the fused traffic data. In the traditional data processing mode, data usually needs to be transmitted to the cloud or central processing system for unified processing, which will cause data processing delays. The edge computing module can perform fast data processing at the edge of the network, significantly reducing the delay of data processing, and in the process, advanced immune clustering neural networks are used for data fusion to improve the accuracy and reliability of data fusion. Data fusion also reduces the transmission of redundant data, thereby reducing the cost of the system.

[0077] Specifically, in one or more embodiments of the present specification, the edge computing module preprocesses the multi-source real-time traffic data to obtain the processed multi-source real-time traffic data, specifically including:

[0078] Based on the edge computing module, the multi-source real-time traffic data is decoded to obtain the decoded multi-source real-time traffic data. Then, the decoded multi-source real-time traffic data is cleaned to obtain the cleaned multi-source real-time traffic data. By identifying the data format of the decoded multi-source real-time traffic data, the data format of the multi-source real-time traffic data is converted according to the data input format of the preset immune clustering neural network to obtain the processed multi-source real-time traffic data. In this process, after the edge computing module pre-processes the multi-source real-time traffic data, the data format and type are unified, which is helpful for the subsequent data fusion process. The preset immune clustering neural network can better process these pre-processed data, improve the accuracy and reliability of data fusion, and thus support more complex traffic analysis and decision-making.

[0079] Furthermore, in the embodiments of this specification, immune clustering neural networks are used to fuse the pre-processed multi-source heterogeneous real-time dynamic traffic data and store them in a database. Based on the clonal selection and immune memory mechanism of the biological immune system, the hidden layer structure of the network is optimized by immune clustering of historical traffic data sets, and a network fusion model with the best structure is obtained, thereby achieving efficient fusion of traffic information. In one or more embodiments of this specification, before the pre-set immune clustering neural network is used to fuse the processed multi-source real-time traffic data and obtain the fused traffic data, the method also includes the following process:

[0080] First, the edge computing module obtains the historical traffic data set and performs data preprocessing on each data in the historical traffic data set to divide the processed historical traffic data set based on a preset ratio to obtain a training data set and a test data set, such as 70% training set and 30% test set. Then the training data set is divided according to preset intervals, such as rules based on time intervals or data segment lengths, to obtain multiple initial populations corresponding to the training set data. Among them, the historical traffic data in each initial population is used as an antibody. The fitness of each antibody in each initial population is calculated to select an antibody with a higher fitness as an excellent antibody according to the value of the fitness, to clone and obtain similar antibodies corresponding to the excellent antibodies, and to perform a move operation and a crossover operation based on the similar antibodies to obtain a newly added antibody population. Among them, it can be understood that the move operation is to fine-tune or randomly change the cloned antibodies to increase the diversity of the population. The crossover operation is to exchange or combine some features of different antibodies to generate new antibodies. Then, the acquisition process of the newly added antibody population is iterated to select the antibody with the highest fitness as the best clustering center to cluster the training data set, and the number of hidden layers and the number of neurons in each layer of the network are determined according to the clustering results to obtain the initial network structure. According to the clonal selection and immune memory mechanism, the network structure is iteratively optimized to obtain the optimized network structure, and the optimized network structure is evaluated based on the test set data, and the preset immune clustering neural network that meets the requirements is determined according to the evaluation results.

[0081] In this process, the number of hidden layers and the number of neurons in each layer of the network are determined according to the clustering results, which realizes the adaptive adjustment of the network structure and improves the generalization ability and robustness of the model. The application of clonal selection and immune memory mechanism enables the network structure to retain excellent features during the iterative optimization process. By optimizing the hidden layer structure of the network through immune clustering of historical traffic data sets, the network fusion model with the best structure is obtained, realizing the efficient fusion of traffic information.

[0082] S103: The communication module transmits the integrated traffic data to the central subsystem based on a corresponding communication method.

[0083] After the fusion of multi-source real-time traffic data is achieved based on the above steps, the fused traffic data will be transmitted to the central subsystem based on the corresponding communication method according to the communication module in the roadside subsystem; among them, it can be understood that the communication method includes: wired communication and wireless communication.

[0084] Specifically, in one or more embodiments of the present specification, the communication module transmits the fused traffic data to the central subsystem based on a corresponding communication method, specifically including:

[0085] The communication mode corresponding to the current communication module is determined according to the interface protocol corresponding to the communication interface module; wherein the communication mode includes: wired communication and wireless communication. If the communication mode is wireless communication, the integrated traffic data is wirelessly transmitted to the built-in first network switch of the central subsystem based on the built-in wireless communication module of the communication module, so that the integrated traffic data is transmitted to the built-in central platform of the central subsystem according to the first network switch. If the communication mode is wired communication, it is necessary to transmit the integrated traffic data to the second network switch based on the network port communication according to the built-in wired communication module of the communication module. Then the second network switch transmits the integrated traffic data to the built-in second optical fiber transceiver of the central subsystem based on the first optical fiber transceiver, so that the second optical fiber transceiver transmits the integrated traffic data to the built-in central platform of the central subsystem through the first network switch. It should also be noted that the above-mentioned wireless communication module integrates short-range communication, Wifi, 4G / 5G, LTE-V and other data transmission modes, and the wired communication module is mainly based on the network port communication of RJ45. The above process can adjust the communication mode and transmission path according to actual needs, and has good scalability and compatibility. Regardless of whether the data is transmitted via wireless or wired communication, it will eventually be transmitted to the built-in central platform of the central subsystem for processing. This centralized processing method can achieve unified management and analysis of traffic data and improve the efficiency and accuracy of data processing.

[0086] S104: The central subsystem generates corresponding business data based on the integrated traffic data, and transmits the business data to each of the outfield subsystems for traffic control based on the first power carrier communication module and the second power carrier communication module.

[0087] After obtaining the fused traffic data, the central subsystem will generate business data based on the fused traffic data, which reflects the current traffic conditions and needs. Based on this data, the outfield subsystem can adjust control strategies such as traffic signals and lane allocation in real time to adapt to changes in traffic flow. The business data is then transmitted to each outfield subsystem for traffic control based on the first power carrier communication module and the second power carrier communication module. Since the power carrier communication module supports two-way communication, the outfield subsystem can feed back the execution results and real-time traffic conditions to the central subsystem. Based on these feedback data, the central subsystem can further adjust and optimize the traffic control strategy to achieve more accurate traffic control.

[0088] Specifically, in one or more embodiments of the present specification, the service data is transmitted to each outfield subsystem for traffic control based on the first power line carrier communication module and the second power line carrier communication module, which specifically includes the following process:

[0089] The central platform transmits the business data to the first power carrier communication module through the communication module, so as to encode the business data based on the first power carrier communication module to obtain the encoded business data. Then, the first power carrier communication module transmits the encoded business data to the second power carrier communication module based on the power supply line, so that the second power carrier communication module transmits the encoded business data to each outfield subsystem based on the power supply line. The encoded business data is parsed by the outfield subsystem so that each outfield subsystem can perform traffic control based on the business data. This process realizes the unified management of the outfield subsystem, which not only realizes the unified aggregation and management of data based on the middleware subsystem and improves the management efficiency, but also breaks through the data barriers between different outfield subsystems and realizes the data interaction and sharing at the intersection layer.

[0090] like Figure 3 As shown, the present specification embodiment provides a schematic diagram of the structure of a traffic control device based on a power line carrier. Figure 3 It can be seen that in one or more embodiments of this specification, a traffic control device based on power line carrier is applied to a middleware traffic system composed of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power line carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power line carrier communication module, and the device includes:

[0091] at least one processor; and,

[0092] a memory communicatively connected to the at least one processor; wherein,

[0093] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: execute any of the above-mentioned methods.

[0094] like Figure 4 As shown, the present specification embodiment provides a structural schematic diagram of a non-volatile storage medium, which is composed of Figure 4 It can be seen that a non-volatile storage medium is provided in one or more embodiments of the present specification, storing computer executable instructions 401, which are applied to a middleware traffic system composed of one or more external field subsystems, a middleware subsystem connected to the one or more external field subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an external field direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the external field direct connection subsystem includes: a second power carrier communication module, and the computer executable instructions 401 can: execute any of the above-described methods.

[0095] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0096] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0097] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A traffic control method based on power line carrier, characterized in that: Applicable to a middleware traffic system consisting of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power carrier communication module, and the method includes: The first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, and transmits the multi-source real-time traffic data to the edge computing module based on the communication interface module; The edge computing module preprocesses the multi-source real-time traffic data to obtain processed multi-source real-time traffic data, and performs data fusion on the processed multi-source real-time traffic data according to a preset immune clustering neural network to obtain fused traffic data; The communication module transmits the fused traffic data to the central subsystem based on a corresponding communication method; The central subsystem generates corresponding business data based on the integrated traffic data, and transmits the business data to each of the outfield subsystems for traffic control based on the first power carrier communication module and the second power carrier communication module.

2. A traffic control method based on power line carrier according to claim 1, characterized in that: Before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method further includes: The power supply module built into the external field direct connection subsystem converts the AC power of the power supply line based on a transformer device, so as to supply power to the first power carrier communication module and the communication interface module built into the external field direct connection subsystem according to the converted DC power, so as to maintain the operation of the first power carrier communication module and the communication interface module built into the external field direct connection subsystem; The communication interface module built into the outfield direct connection subsystem acquires multi-source real-time traffic data collected by each of the outfield subsystems; wherein the communication interface module built into the outfield direct connection subsystem corresponds one-to-one with the outfield subsystem, and the outfield subsystem includes: a traffic control system, a traffic collection system, and an information release system; The first power carrier communication module receives multi-source real-time traffic data collected by each external field subsystem based on the communication interface module, and encodes the multi-source real-time traffic data to attach the multi-source real-time traffic data to the power supply line between the roadside subsystem and the external field direct connection subsystem.

3. A traffic control method based on power line carrier according to claim 1, characterized in that: Before the first power carrier communication module receives the multi-source real-time traffic data uploaded by the second power carrier communication module based on the power supply line between the roadside subsystem and the external field direct connection subsystem, the method further includes: The built-in network management module of the roadside subsystem performs network configuration on the edge computing module, the communication module and the power carrier communication module; wherein the network management module is connected to the communication interface module and the built-in power supply module of the roadside subsystem; Preferably, the built-in network management module of the roadside subsystem performs network configuration on the edge computing module, the communication module and the power carrier communication module, specifically including: The network management module performs network configuration on the multi-processing units of the edge computing module based on the TCP / IP protocol; The network management module sets a corresponding communication module based on the interface protocol corresponding to the communication interface module, and associates and configures the internal data interface and the external interaction interface of the communication module; The network management module configures the link relationship between the power line carrier communication modules based on the physical layer address.

4. A traffic control method based on power line carrier according to claim 1, characterized in that: The edge computing module pre-processes the multi-source real-time traffic data to obtain the processed multi-source real-time traffic data, specifically including: Decoding the multi-source real-time traffic data based on the edge computing module to obtain decoded multi-source real-time traffic data; Performing data cleaning on the decoded multi-source real-time traffic data to obtain cleaned multi-source real-time traffic data; The data format of the decoded multi-source real-time traffic data is identified, and the data format of the multi-source real-time traffic data is converted according to the data input format of the preset immune clustering neural network to obtain processed multi-source real-time traffic data.

5. A traffic control method based on power line carrier according to claim 1, characterized in that: Before fusing the processed multi-source real-time traffic data according to a preset immune clustering neural network to obtain the fused traffic data, the method further includes: The edge computing module obtains a historical traffic data set, and performs data preprocessing on each data in the historical traffic data set, so as to divide the processed historical traffic data set based on a preset ratio to obtain a training data set and a test data set; Dividing the training data set based on preset intervals to obtain multiple initial populations corresponding to the training set data; wherein the historical traffic data in each of the initial populations is used as an antibody; Calculating the fitness of each antibody in each of the initial populations, selecting a corresponding antibody according to the fitness value, cloning to obtain a similar antibody corresponding to the corresponding antibody, and performing a move operation and a crossover operation according to the similar antibody to obtain a newly added antibody population; Iterating the process of acquiring the newly added antibody population to select the antibody with the highest fitness as the best clustering center to cluster the training data set, and determining the number of network hidden layers and the number of neurons in each layer according to the clustering results to obtain an initial network structure; According to the clonal selection and immune memory mechanism, the network structure is iteratively optimized to obtain an optimized network structure, and the optimized network structure is evaluated based on the test set data, and a preset immune clustering neural network that meets the requirements is determined according to the evaluation results.

6. A traffic control method based on power line carrier according to claim 3, characterized in that: The communication module transmits the fused traffic data to the central subsystem based on a corresponding communication method, specifically including: Determine the communication mode corresponding to the current communication module according to the interface protocol corresponding to the communication interface module; wherein the communication mode includes: wired communication and wireless communication; If the communication mode is wireless communication, based on the built-in wireless communication module of the communication module, the fused traffic data is wirelessly transmitted to the built-in first network switch of the central subsystem, so that the fused traffic data is transmitted to the built-in central platform of the central subsystem according to the first network switch; If the communication mode is wired communication, based on the built-in wired communication module in the communication module, the fused traffic data is transmitted to the second network switch based on network port communication; The second network switch transmits the fused traffic data to the built-in second fiber optic transceiver of the central subsystem based on the first fiber optic transceiver, so that the second fiber optic transceiver transmits the fused traffic data to the built-in central platform of the central subsystem through the first network switch.

7. A traffic control method based on power line carrier according to claim 1, characterized in that: The method further comprises: Performing time calibration on the one or more outfield subsystems, the middleware subsystem, and the central subsystem according to the built-in location timing service module of the roadside subsystem; Preferably, the time calibration of the one or more outfield subsystems, the middleware subsystem and the central subsystem according to the built-in location timing service module of the roadside subsystem specifically includes: Receiving satellite signals from the GNSS according to the location timing service module to obtain time information based on the satellite signal analysis; The location timing service module generates a time calibration instruction based on the time information, and transmits the time calibration instruction to the one or more external field subsystems, the middleware subsystem and the central subsystem based on the power supply line for time calibration.

8. A traffic control method based on power line carrier according to claim 1, characterized in that: Transmitting the service data to each of the outfield subsystems for traffic control based on the first power line carrier communication module and the second power line carrier communication module specifically includes: The central platform transmits the service data to the first power carrier communication module through the communication module, so as to encode the service data based on the first power carrier communication module to obtain the encoded service data; The first power carrier communication module transmits the encoded business data to the second power carrier communication module based on the power supply line, so that the second power carrier communication module transmits the encoded business data to each of the outfield subsystems based on the power supply line; The outfield subsystem parses the encoded business data so that each outfield subsystem performs traffic control based on the business data.

9. A traffic control device based on power line carrier, characterized in that: Applicable to a middleware traffic system consisting of one or more outfield subsystems, a middleware subsystem connected to the one or more outfield subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an outfield direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the outfield direct connection subsystem includes: a second power carrier communication module, and the device includes: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can: execute any of the methods described in claims 1-8.

10. A non-volatile storage medium storing computer executable instructions, characterized in that: Applicable to a middleware traffic system composed of one or more external field subsystems, a middleware subsystem connected to the one or more external field subsystems based on power line communication, and a central subsystem connected to the middleware subsystem based on power line communication; wherein the middleware subsystem is composed of a roadside subsystem and an external field direct connection subsystem, the roadside subsystem includes: a first power carrier communication module, a communication interface module, an edge computing module, and a communication module, the external field direct connection subsystem includes: a second power carrier communication module, and the computer executable instructions are capable of: executing any of the methods described in claims 1-8 above.

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