Expressway section real-time traffic volume calculation method and device based on ETC portal

Abstract

The invention provides a highway section real-time traffic volume calculation method and device based on an ETC portal, and the method comprises the steps: obtaining the road section basic data of a to-be-calculated highway road network and ETC portal basic data, and determining the basic information of an ETC cross modulation station according to the road section basic data and the ETC portal basic data; according to the basic information, acquiring first traffic volume data of toll vehicle models of the ETC cross-dispatching station in real time; converting the first traffic volume data into second traffic volume data of a cross-modulation standard vehicle type based on a preset division standard; and carrying out statistics on the second traffic volume data, and determining the traffic volume of each cross-modulation standard vehicle type of the ETC cross-modulation station. The comprehensiveness and accuracy of real-time operation monitoring of the highway network can be realized without additionally arranging other equipment for a newly built cross modulation station, the cost can be reduced, and meanwhile, powerful data support is provided for evaluating the traffic accessibility of the whole bus road network.

Description

Technical Field

[0001] The present application belongs to the technical field of traffic flow calculation, and in particular, relates to a method and device for calculating real-time traffic volume on a highway section based on an ETC gantry. Background Art

[0002] Highway traffic survey is a way to investigate the traffic conditions of national highways, provincial highways and other highways to grasp the traffic flow characteristics such as traffic volume and vehicle type of highway sections. It is an important part of transportation statistics and an important data support for highway planning, management, services and reflecting the traffic operation of highways. At present, highways have achieved full coverage of ETC gantries. The ETC system can accurately record the vehicle model, type, transaction time, driving direction and other information passing through the ETC gantries in real time, and has the basic conditions for converting into traffic data, providing a new data support channel for highway traffic surveys. However, the existing technology has a relatively one-sided highway section flow index, and the coverage of traffic flow survey stations is limited, which cannot fully monitor the highway network. Summary of the invention

[0003] The main purpose of the embodiments of the present invention is to provide a method and device for calculating real-time traffic volume on a highway section based on an ETC gantry, which can achieve comprehensiveness and accuracy in real-time operation monitoring of the highway network, provide strong data support for evaluating the traffic accessibility of the entire public transportation network, and solve the technical problem that the highway section flow index coverage is limited, resulting in the inability to comprehensively monitor the highway network.

[0004] In a first aspect, a method for calculating real-time traffic volume of a highway section based on an ETC gantry is provided, the method comprising: obtaining basic data of a section of a highway network to be calculated and basic data of an ETC gantry, and determining basic information of an ETC interchange station according to the basic data of the section and the basic data of the ETC gantry; obtaining first traffic volume data of a toll vehicle type of the ETC interchange station in real time according to the basic information; converting the first traffic volume data into second traffic volume data of an interchange standard vehicle type based on a preset division standard, the preset division standard comprising a division standard of toll vehicle types in an highway ETC toll collection system and a division standard of highway interchange standard vehicle types; and performing statistics on the second traffic volume data to determine the traffic volume of each interchange standard vehicle type of the ETC interchange station.

[0005] In a possible implementation, the first traffic volume data of the toll vehicle type of the ETC exchange station is obtained in real time based on the basic information, including: calculating the real-time traffic volume of the ETC exchange station by vehicle type at a preset frequency through the ETC gantry dynamic data, and obtaining the transaction flow data and license plate recognition data of the ETC gantry in the ETC toll collection system; deduplicating the transaction flow data and license plate recognition data; for the deduplicated license plate recognition data, counting the time when the vehicle passes the ETC gantry at a preset frequency to obtain the license plate recognition traffic volume; for the deduplicated transaction flow data, counting the time and vehicle type when the vehicle passes the ETC gantry at a preset frequency to obtain the transaction traffic volume by vehicle type.

[0006] In another possible implementation, the transaction flow data and license plate recognition data are deduplicated, including: if multiple data records have the same gantry number and license plate, and the time interval for passing through the ETC gantry is less than a preset interval, they are determined to be duplicate data; for multiple records determined to be duplicates, the record with the latest time is retained; if the time is the same, any one record is retained and the remaining records are discarded; in the case where there are two ETC gantries in the same direction, the transaction flow data and license plate recognition data of the two ETC gantries are merged separately, and then the above-mentioned deduplication processing is performed.

[0007] In another possible implementation, based on a preset classification standard, the first traffic volume data is converted into second traffic volume data of an inter-modulation standard vehicle type, including: directly converting the traffic volume of Class 1 trucks and Class 2 trucks of the toll vehicle types in the first traffic volume data into the traffic volume of small trucks and medium trucks of the inter-modulation standard vehicle type according to the preset classification standard of the toll vehicle types in the ETC toll collection system of the expressway, or, proportionally converting the traffic volume of Class 1 trucks and Class 2 trucks of the toll vehicle types in the first traffic volume data into the traffic volume of small trucks and medium trucks of the inter-modulation standard vehicle type; converting the traffic volume of other vehicle types of the toll vehicle types in the first traffic volume data into the traffic volume of corresponding vehicle types in the inter-modulation standard vehicle type according to a preset correspondence table; and combining the traffic volume of each vehicle type in the inter-modulation standard vehicle type after conversion to obtain the second traffic volume data.

[0008] In another possible implementation, the traffic volume of Class 1 trucks and Class 2 trucks of toll-collecting vehicle types in the first traffic volume data is directly converted into the traffic volume of small trucks and medium trucks of the standard vehicle types for inter-modulation according to the division standard, including: drawing a total mass distribution curve of Class 1 trucks based on a long time series of highway entrance weighing data to obtain the quantity distribution of the total mass of Class 1 trucks at different tonnages; searching for the first peak of the probability distribution on the left side of the total mass distribution curve by constructing a sliding window, and the corresponding total mass is the average unloaded mass of Class 1 trucks; if within a long time series and a large sample range, the error in directly converting the traffic volume of Class 1 trucks into the traffic volume of small trucks for inter-modulation according to the division standard and the average unloaded mass does not exceed a first preset threshold, then the traffic volume of Class 1 trucks is directly converted into the traffic volume of small trucks of the standard vehicle types for inter-modulation; if within a long time series and a large sample range, the error in directly converting the traffic volume of Class 2 trucks into the traffic volume of medium trucks for inter-modulation according to the division standard and the average unloaded mass does not exceed a second preset threshold, then the traffic volume of Class 2 trucks is directly converted into the traffic volume of medium trucks of the standard vehicle types for inter-modulation.

[0009] In another possible implementation, the traffic volume of Class 1 trucks and Class 2 trucks of the toll model in the first traffic volume data is converted proportionally into the traffic volume of small trucks and medium trucks of the standard interchange model, including: obtaining historical data of continuous interchange stations on highways, and determining the ratio of medium and small truck traffic volumes on a route basis based on the historical data; and splitting the total traffic volume of Class 1 trucks and Class 2 trucks in the ETC gantry traffic data proportionally.

[0010] In another possible implementation, the second traffic volume data includes license plate traffic volume and transaction traffic volume by vehicle type. The second traffic volume data is counted to determine the traffic volume of each standard vehicle type at the ETC exchange station, including: for non-free passage periods, calculating the proportion of each vehicle type according to the transaction traffic volume by vehicle type; determining the traffic volume of each vehicle type in the illegal traffic volume according to the proportion of each vehicle type, and the illegal traffic volume is equal to the license plate traffic volume minus the transaction traffic volume; calculating the sum of the traffic volume of each vehicle type in the illegal traffic volume and the traffic volume of each vehicle type in the transaction traffic volume to obtain the traffic volume of each standard vehicle type in the non-free passage period; expanding the total traffic volume of other vehicles types except Class 1 passenger cars in the free passage period according to the proportion of the illegal traffic volume to the license plate traffic volume in the non-free passage period; calculating the traffic volume of other standard vehicle types except Class 1 passenger cars in the free passage period according to the total traffic volume of other vehicles types except Class 1 passenger cars in the free passage period and the proportion of each vehicle type in the non-free passage period; the traffic volume of Class 1 passenger cars in the free passage period is equal to the license plate traffic volume in the free passage period minus the total traffic volume of other vehicles types.

[0011] In a second aspect, a device for calculating real-time traffic volume of a highway section based on an ETC gantry is provided, the device comprising: an information determination unit, used to obtain basic data of a section of a highway network to be calculated and basic data of an ETC gantry, and determine basic information of an ETC interchange station according to the basic data of the section and the basic data of the ETC gantry; a data acquisition unit, used to obtain first traffic volume data of a toll vehicle type of the ETC interchange station in real time according to the basic information; a data conversion unit, used to convert the first traffic volume data into second traffic volume data of an interchange standard vehicle type based on a preset division standard, the preset division standard comprising a division standard of toll vehicle types in an highway ETC toll collection system and a division standard of highway interchange standard vehicle types; a traffic volume calculation unit, used to perform statistics on the second traffic volume data and determine the traffic volume of each interchange standard vehicle type of the ETC interchange station.

[0012] According to a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, a method for calculating real-time traffic volume on a highway section based on an ETC gantry as provided in the first aspect is implemented.

[0013] In a fourth aspect, a non-transitory computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, a method for calculating real-time traffic volume on a highway section based on an ETC gantry as provided in the first aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in describing the embodiments of the present application.

[0015] Figure 1 A flowchart of a method for calculating real-time traffic volume of a highway section based on an ETC gantry is provided as an embodiment of the present invention; Figure 2 A structural diagram of a device for calculating real-time traffic volume on a highway section based on an ETC gantry provided by an embodiment of the present invention; Figure 3 A schematic diagram of the physical structure of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0016] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar modules or modules with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present invention.

[0017] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, modules, components and / or groups thereof. It should be understood that when we refer to a module as being "connected" or "coupled" to another module, it may be directly connected or coupled to the other modules, or there may be intermediate modules. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any modules and all combinations of one or more associated listed items.

[0018] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation method of the present application will be further described in detail below with reference to the accompanying drawings.

[0019] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0020] like Figure 1 The flowchart of a method for calculating the real-time traffic volume of a highway section based on an ETC gantry according to an embodiment of the present invention is shown, and the method comprises: Step S11, obtaining the basic data of the road section of the expressway network to be calculated and the basic data of the ETC gantry, and determining the basic information of the ETC dispatch station based on the basic data of the road section and the basic data of the ETC gantry.

[0021] Optionally, obtain the basic data of the road section of the highway network to be calculated and the basic data of the ETC gantry, and set the basic information field of the ETC interchange station with reference to the basic information of the interchange station of the highway traffic situation survey system. Specifically refer to the basic information of the interchange station of the highway traffic situation survey system, and configure the basic information of the new interchange station based on the ETC gantry information and the information of the road section where it is located. The configured basic information fields of the ETC interchange station are shown in Table 1 below.

[0022] Table 1 ETC traffic station basic information field design table and description Then, according to the dynamic traffic index field of the existing traffic control station, the dynamic traffic index field of the ETC traffic control station is set. The set dynamic traffic index field of the ETC traffic control station is shown in Table 2.

[0023] Table 2 ETC traffic dispatch station dynamic traffic index field design and description table Step S12, obtaining the first traffic volume data of the toll vehicle type of the ETC exchange station in real time according to the basic information.

[0024] Optionally, the real-time traffic volume of each vehicle type at the ETC exchange station is calculated at a preset frequency through the dynamic traffic data of the ETC gantry, and the transaction flow data and license plate recognition data of the ETC gantry in the ETC toll collection system are obtained. The preset frequency is preferably 5 minutes, that is, statistics are counted every 5 minutes.

[0025] Then, the transaction flow data and license plate recognition data are deduplicated. The specific method of deduplication is as follows: if the gantry number and license plate of multiple data records are the same, and the time interval of passing through the ETC gantry is less than the preset interval, it is determined to be duplicate data; for multiple records determined to be duplicates, the record with the latest time is retained; if the time is the same, any record is retained and the rest are discarded; in the case where there are two ETC gantries in the same direction, the transaction flow data and license plate recognition data of the two ETC gantries are merged separately, and then the above deduplication processing is performed. The preset interval can be set as needed, preferably 1 minute.

[0026] For the deduplicated license plate recognition data, statistics are collected at a preset frequency based on the time when the vehicle passes through the ETC gantry to obtain the license plate recognition traffic volume. The license plate recognition traffic volume is the total traffic volume passing through the ETC gantry. For the deduplicated transaction flow data, statistics are collected at a preset frequency based on the time and vehicle type when the vehicle passes through the ETC gantry to obtain the transaction traffic volume by vehicle type. The transaction traffic volume includes the traffic volume of various vehicle types.

[0027] The combined statistics of license plate recognition traffic volume and vehicle type transaction traffic volume are used to obtain the first traffic volume data of the toll vehicle type at the ETC interchange station.

[0028] Step S13, converting the first traffic volume data into second traffic volume data of the traffic control standard vehicle type based on a preset classification standard, wherein the preset classification standard includes the classification standard of the toll vehicle type in the highway ETC toll collection system and the classification standard of the highway traffic control standard vehicle type.

[0029] In the embodiment of the present invention, according to the "Classification of Vehicle Types for Toll Road Vehicle Tolls" (JT / T489-2019), toll vehicles are specifically classified into three major categories: passenger cars, trucks, and special operation vehicles. Among them, passenger cars are divided into 4 categories according to the vehicle type and the approved number of passengers registered by the traffic management department; trucks are divided into 6 categories according to the total number of axles, vehicle length and maximum allowable total mass; the classification standard of special operation vehicles is similar to that of trucks, and is divided into 6 categories, mainly for cars equipped with special equipment or appliances, designed and manufactured for engineering special (including health and medical) operations. In the ETC gantry system, separate codes are given for different vehicle types, with four types of passenger cars coded as 14, six types of trucks coded as 1116, and six types of special operation vehicles coded as 2126. In addition, the vehicle classification is subdivided based on the toll truck model, and J1 type containers and J2 type containers are separately coded as 24 and 28.

[0030] According to the classification standards of standard vehicle types for highway traffic coordination, standard vehicle types for traffic coordination are divided into 7 categories according to the number of axles, vehicle length and rated load capacity. Among them, buses are divided into 2 categories: small and medium-sized buses and large buses. Trucks are divided into 5 categories: small trucks, medium trucks, large trucks, extra-large trucks and container trucks.

[0031] By comparing the two classification standards, we can get the correspondence between the standard models and the toll models. The correspondence table between the standard models and the toll models is shown in Table 3.

[0032] Table 3 Correspondence between standard models and toll models Among them, the five models of the cross-adjustment standard models, including small and medium-sized passenger cars, large passenger cars, large trucks, extra-large trucks, and containers, can all be directly matched. However, due to the different definitions of truck mass in the two standards, the cross-adjustment standard model classification standard requires that the load capacity of small trucks is less than 2 tons, and that of medium trucks is between 2 and 7 tons; while the toll model classification standard requires that the total mass of Class 1 trucks is less than 4.5 tons, and that of Class 2 trucks is not less than 4.5 tons. There is overlap between Class 1 and Class 2 trucks and the standards for small trucks and medium trucks, so they cannot be directly matched. From the matching analysis of the two vehicle classification standards, the two have a high degree of matching in vehicle classification. Only the matching of toll models Class 1 trucks and Class 2 trucks with the cross-adjustment standard models of small trucks and medium trucks has overlaps, which requires conversion.

[0033] In an embodiment of the present invention, the traffic volume of Class 1 trucks and Class 2 trucks of the toll model in the first traffic volume data can be directly converted into the traffic volume of small trucks and medium trucks in the standard traffic model according to the preset division standard. Optionally, the total mass distribution curve of Class 1 trucks is drawn based on the long-term series of highway entrance weighing data to obtain the quantity distribution of the total mass of Class 1 trucks at different tonnages; the first peak of the probability distribution on the left side of the total mass distribution curve is searched by constructing a sliding window, and the corresponding total mass is the average unloaded mass of Class 1 trucks; if within the long-term series and large sample range, the error of directly converting the traffic volume of Class 1 trucks to the traffic volume of small trucks for inter-modulation according to the division standard and the average unloaded mass does not exceed the first preset threshold, then the traffic volume of Class 1 trucks is directly converted into the traffic volume of small trucks in the standard traffic model; if within the long-term series and large sample range, the error of directly converting the traffic volume of Class 2 trucks to the traffic volume of medium trucks for inter-modulation according to the division standard and the average unloaded mass does not exceed the second preset threshold, then the traffic volume of Class 2 trucks is directly converted into the traffic volume of medium trucks in the standard traffic model. The first preset threshold and the second preset threshold can be set as needed. The first preset threshold is preferably 10%. The second preset threshold may be the same as or different from the first preset threshold. In the embodiment of the present invention, the second preset threshold is described as being equal to the first preset threshold.

[0034] Under the two vehicle classification standards, the vehicle length classification standards are the same, both are 6 meters; but the mass classification standards are different. The traffic light trucks are required to have a load capacity ≤ 2 tons, and the toll 1 class trucks are required to have a total mass of less than 4.5 tons. The difference is concentrated in the empty mass of the truck (i.e. the truck's own weight). When the vehicle is unloaded, the empty mass of the same model is basically the same. When loaded, the total mass of the truck varies greatly due to the different weights of the cargo. In order to avoid estimation errors caused by changes in the load of highway trucks in different periods, the total mass distribution curve of Class 1 trucks can be drawn based on the long-term series of highway entrance weighing data to obtain the quantity distribution of the total mass of Class 1 trucks in different tonnages. By constructing a sliding window to search for the first peak of the probability distribution on the left, the corresponding total mass is the average empty mass of Class 1 trucks. If the statistical results satisfy the formula within a long time series and a large sample range: in, The difference between the average empty weight of trucks with a load greater than 2 tons and less than 4.5 tons is , which proves that the error of directly converting the traffic volume of Class 1 trucks into the traffic volume of small trucks in traffic dispatching does not exceed 10%, which meets the accuracy requirements of traffic dispatching vehicle type collection and can be directly matched. The verification idea of ​​direct conversion of Class 2 trucks and trucks in traffic dispatching is the same.

[0035] Alternatively, the traffic volume of Class 1 and Class 2 trucks of the toll model in the first traffic volume data can be converted proportionally into the traffic volume of small trucks and medium trucks in the standard interchange model. Optionally, obtain the historical data of continuous interchange stations on highways, and determine the proportion of medium and small truck traffic volume by route based on the historical data; split the total traffic volume of Class 1 and Class 2 trucks in the ETC gantry traffic data proportionally. In the historical data, there is a route t with a total of n interchange stations. The small truck traffic volume at the i-th (i=1,2,3,…n) ETC interchange station in the route is , the truck traffic volume is , and the total traffic volume of all ETC gantry type 1 trucks and type 2 trucks in route t is , then the split small truck traffic volume for: Medium truck traffic for: The advantages of the proportional splitting method are that it is simple and easy to implement, and the analysis results are highly representative, but it has high requirements on the scale of the traffic station and the quality of the data, and the manual verification operation takes a long time and is costly. Under the condition of meeting the accuracy of traffic model collection, the conversion rules of the direct correspondence method are simple and can achieve real-time conversion, and the conversion process has low requirements on computing performance.

[0036] For the traffic volume of other types of vehicles other than the traffic volume of Class 1 trucks and Class 2 trucks in the first traffic volume data, the traffic volume of other types of vehicles of the toll vehicle in the first traffic volume data is converted into the traffic volume of the corresponding vehicle in the cross-modulation standard vehicle according to the preset corresponding relationship table, i.e., Table 3. The traffic volume of each vehicle in the cross-modulation standard vehicle after the conversion is combined to obtain the second traffic volume data.

[0037] Step S14, collecting statistics on the second traffic volume data to determine the traffic volume of each standard vehicle type at the ETC inter-modulation station.

[0038] Similar to the first traffic volume, the second traffic volume data also includes license plate identification traffic volume and transaction traffic volume by vehicle type. License plate identification traffic volume is the total traffic volume of all inter-modulation standard vehicle types at the ETC inter-modulation station. Transaction traffic volume includes the traffic volume of each inter-modulation standard vehicle type at the ETC inter-modulation station.

[0039] For the traffic volume during the non-free passage period, there is a situation where the transaction data is missing due to the driver's violation. In step S14, optionally, for the non-free passage period, the proportion of each vehicle type is calculated according to the transaction traffic volume by vehicle type; the traffic volume of each vehicle type in the illegal traffic volume is determined according to the proportion of each vehicle type, and the illegal traffic volume is equal to the license plate traffic volume minus the transaction traffic volume; the traffic volume of each vehicle type in the illegal traffic volume and the traffic volume of each vehicle type in the transaction traffic volume are calculated to obtain the traffic volume of each standard vehicle type in the non-free passage period.

[0040] Regarding the traffic volume during the free passage period, there are cases where transaction data is missing due to free passage of MTC passenger cars and violations by drivers. In an embodiment of the present invention, optionally, the total traffic volume of other models other than Class 1 passenger cars during the free passage period is expanded according to the proportion of illegal traffic volume to license plate traffic volume during the non-free passage period; the traffic volume of other standard models other than Class 1 passenger cars during the free passage period is calculated according to the total traffic volume of other models other than Class 1 passenger cars during the free passage period and the proportion of each model during the non-free passage period; the traffic volume of Class 1 passenger cars during the free passage period is equal to the license plate traffic volume during the free passage period minus the total traffic volume of other models. In this way, the traffic volume of each standard model of the free passage period is obtained.

[0041] The embodiment of the present invention realizes the comprehensiveness and accuracy of real-time operation monitoring of the expressway network by focusing on the vehicle passing data of the expressway ETC toll collection system, the basic data of the road network, and the data content of the existing exchange stations. The problem of high cost and heavy maintenance workload caused by the construction of cross arms, ETC gantries, special cable construction, and the arrangement of special personnel for operation and maintenance of new exchange stations is solved without adding other equipment, providing strong data support for evaluating the traffic accessibility of the entire public transportation network.

[0042] In summary, the embodiment of the present invention obtains the basic data of the section of the expressway network to be calculated and the basic data of the ETC gantry, and determines the basic information of the ETC interchange station according to the basic data of the section and the basic data of the ETC gantry; obtains the first traffic volume data of the toll vehicle type of the ETC interchange station in real time according to the basic information; converts the first traffic volume data into the second traffic volume data of the interchange standard vehicle type based on a preset division standard, and the preset division standard includes the division standard of the toll vehicle type in the expressway ETC toll collection system and the division standard of the highway interchange standard vehicle type; statistics the second traffic volume data to determine the traffic volume of each interchange standard vehicle type of the ETC interchange station, and the comprehensiveness and accuracy of the real-time operation monitoring of the expressway network can be achieved without adding other equipment for the newly built interchange station, which can reduce costs and provide strong data support for evaluating the traffic accessibility of the entire public transportation network.

[0043] like Figure 2The figure shows a structural diagram of a device for calculating real-time traffic volume of a highway section based on an ETC gantry provided by an embodiment of the present invention, the device comprising: The information determination unit 201 is used to obtain the basic data of the road section of the highway network to be calculated and the basic data of the ETC gantry, and determine the basic information of the ETC switching station according to the basic data of the road section and the basic data of the ETC gantry; A data acquisition unit 202 is used to acquire first traffic volume data of a toll vehicle type at an ETC traffic station in real time according to basic information; The data conversion unit 203 is used to convert the first traffic volume data into the second traffic volume data of the traffic control standard vehicle type based on the preset classification standard, wherein the preset classification standard includes the classification standard of the toll vehicle type in the ETC toll collection system of the expressway and the classification standard of the traffic control standard vehicle type on the highway; The traffic volume calculation unit 204 is used to collect statistics on the second traffic volume data to determine the traffic volume of each standard vehicle model at the ETC inter-modulation station.

[0044] The device of the above embodiment is applied to the corresponding method in the above embodiment, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0045] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3 As shown, the electronic device may include: a processor 301, a communication interface 302, a memory 303 and a communication bus 304, wherein the processor, the communication interface and the memory communicate with each other through the communication bus. The processor may call the logic instructions in the memory to execute a method for calculating the real-time traffic volume of a highway section based on an ETC gantry, the method comprising: obtaining the basic data of the road section of the highway network to be calculated and the basic data of the ETC gantry, determining the basic information of the ETC exchange station according to the basic data of the road section and the basic data of the ETC gantry; obtaining the first traffic volume data of the toll vehicle model of the ETC exchange station in real time according to the basic information; converting the first traffic volume data into the second traffic volume data of the exchange standard vehicle model based on the preset division standard, the preset division standard including the division standard of the toll vehicle model in the highway ETC toll collection system and the division standard of the highway exchange standard vehicle model; performing statistics on the second traffic volume data to determine the traffic volume of each exchange standard vehicle model of the ETC exchange station.

[0046] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0047] On the other hand, an embodiment of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a method for calculating real-time traffic volume of a highway section based on an ETC gantry provided by the above-mentioned method embodiments, the method including: obtaining basic data of a section of a highway network to be calculated and basic data of an ETC gantry, and determining basic information of an ETC interchange station based on the basic data of the section and the basic data of the ETC gantry; obtaining first traffic volume data of a toll vehicle type of the ETC interchange station in real time based on the basic information; converting the first traffic volume data into second traffic volume data of an interchange standard vehicle type based on a preset division standard, the preset division standard including a division standard for toll vehicle types in an expressway ETC toll collection system and a division standard for highway interchange standard vehicle types; performing statistics on the second traffic volume data to determine the traffic volume of each interchange standard vehicle type of the ETC interchange station.

[0048] On the other hand, an embodiment of the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute a method for calculating real-time traffic volume of a highway section based on an ETC gantry provided in the above-mentioned embodiments, the method comprising: obtaining basic data of a section of the highway network to be calculated and basic data of the ETC gantry, and determining basic information of the ETC exchange station according to the basic data of the section and the basic data of the ETC gantry; obtaining first traffic volume data of a toll vehicle type of the ETC exchange station in real time according to the basic information; converting the first traffic volume data into second traffic volume data of an exchange standard vehicle type based on a preset classification standard, the preset classification standard including a classification standard for toll vehicle types in the highway ETC toll collection system and a classification standard for highway exchange standard vehicle types; and performing statistics on the second traffic volume data to determine the traffic volume of each exchange standard vehicle type of the ETC exchange station.

[0049] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0050] The above is only a partial implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for calculating real-time traffic volume on a highway section based on an ETC gantry, characterized in that: The method comprises: Obtaining the basic data of the road section of the expressway network to be calculated and the basic data of the ETC gantry, and determining the basic information of the ETC switching station according to the basic data of the road section and the basic data of the ETC gantry; Acquire first traffic volume data of the toll vehicle type of the ETC exchange station in real time according to the basic information; The first traffic volume data is converted into second traffic volume data of the traffic flow standard vehicle type based on a preset classification standard, wherein the preset classification standard includes a classification standard of toll vehicle types in an ETC toll collection system of an expressway and a classification standard of highway traffic flow standard vehicle types; The second traffic volume data is counted to determine the traffic volume of each standard vehicle model of the ETC intercommunication station.

2. The method according to claim 1, characterized in that The step of acquiring the first traffic volume data of the toll vehicle type of the ETC exchange station in real time according to the basic information includes: Through the dynamic data of the ETC gantry, the real-time traffic volume calculation of the ETC traffic station by vehicle type is performed at a preset frequency, and the transaction flow data and license plate recognition data of the ETC gantry in the ETC toll collection system are obtained; Deduplication processing is performed on the transaction flow data and the license plate recognition data; The license plate recognition data after deduplication is counted at the preset frequency according to the time when the vehicle passes through the ETC gantry to obtain the license plate recognition traffic volume; The deduplicated transaction flow data is counted according to the time and vehicle type when the vehicle passes through the ETC gantry and the preset frequency to obtain the transaction traffic volume by vehicle type.

3. The method according to claim 2, characterized in that The deduplication processing of the transaction flow data and the license plate recognition data includes: If multiple data records have the same gantry number and license plate, and the time interval between passing through the ETC gantry is less than the preset interval, they are considered duplicate data; For multiple records that are determined to be duplicates, the record with the latest time is retained; If the time is the same, keep any one record and discard the rest; In the case where there are two ETC gantries in the same direction, the transaction flow data and license plate recognition data of the two ETC gantries are merged separately, and then the above-mentioned deduplication processing is performed.

4. The method according to claim 1, characterized in that The method of converting the first traffic volume data into second traffic volume data of the intercommunication standard vehicle type based on a preset classification standard includes: According to a preset classification standard, the traffic volume of the toll-collecting type of trucks of category 1 and category 2 in the first traffic volume data is directly converted into the traffic volume of the small trucks and medium trucks in the inter-adjustment standard model, or the traffic volume of the toll-collecting type of trucks of category 1 and category 2 in the first traffic volume data is proportionally converted into the traffic volume of the small trucks and medium trucks in the inter-adjustment standard model; According to a preset corresponding relationship table, the traffic volume of other vehicle types of the toll vehicle type in the first traffic volume data is converted into the traffic volume of the corresponding vehicle type in the inter-modulation standard vehicle type; The traffic volume of each model in the combined converted intermodulation standard model is used to obtain the second traffic volume data.

5. The method according to claim 4, characterized in that The method of directly converting the traffic volume of the toll-collecting type 1 truck and the toll-collecting type 2 truck in the first traffic volume data into the traffic volume of the small truck and the medium truck in the traffic standard type according to the preset classification standard includes: Based on the long-term series of highway entrance weighing data, the total mass distribution curve of Class 1 trucks is drawn to obtain the quantity distribution of the total mass of Class 1 trucks in different tonnages. By constructing a sliding window to search for the first peak of the probability distribution on the left side of the total mass distribution curve, the corresponding total mass is the average unloaded mass of Class 1 trucks; If, within a long time series and a large sample range, the error in directly converting the Class 1 truck traffic volume into the traffic volume of the inter-modulation small truck determined based on the classification standard and the average unladen mass does not exceed a first preset threshold, then the Class 1 truck traffic volume is directly converted into the traffic volume of the small truck in the inter-modulation standard vehicle model; If within a long time series and a large sample range, the error in directly converting the Category 2 truck traffic volume into the medium truck traffic volume in the intermodulation determined based on the classification criteria and the average unladen mass does not exceed a second preset threshold, then the Category 2 truck traffic volume will be directly converted into the medium truck traffic volume in the intermodulation standard vehicle model.

6. The method according to claim 4, characterized in that The method of converting the traffic volume of the toll-collecting type 1 truck and the toll-collecting type 2 truck in the first traffic volume data into the traffic volume of the small truck and the medium truck in the standard traffic volume includes: Obtaining historical data of continuous traffic stations on expressways, and determining the ratio of medium and small truck traffic volumes by route based on the historical data; The total traffic volume of Class 1 trucks and Class 2 trucks in the ETC gantry traffic data is split according to the stated ratio.

7. The method according to claim 1, characterized in that The second traffic volume data includes license plate recognition traffic volume and vehicle type transaction traffic volume. The second traffic volume data is statistically analyzed to determine the traffic volume of each standard vehicle type of the ETC inter-modulation station, including: For non-free passage periods, the proportion of each vehicle type is calculated based on the transaction traffic volume of each vehicle type; Determine the traffic volume of each vehicle type in the illegal traffic volume according to the proportion of each vehicle type, wherein the illegal traffic volume is equal to the license plate recognition traffic volume minus the transaction traffic volume; Calculate the sum of the traffic volume of each vehicle type in the illegal traffic volume and the traffic volume of each vehicle type in the transaction traffic volume to obtain the traffic volume of each traffic model of the transaction standard during the non-free passage period; The total traffic volume of other types of vehicles other than Class 1 passenger vehicles during the free passage period is expanded according to the proportion of illegal traffic volume to licensed traffic volume during the non-free passage period; The traffic volume of other traffic models other than Class 1 passenger cars during the free passage period is calculated based on the total traffic volume of other models during the free passage period and the proportion of each model during the non-free passage period; The traffic volume of Class 1 passenger vehicles during the free passage period is equal to the license plate traffic volume during the free passage period minus the total traffic volume of other types of vehicles.

8. A device for calculating real-time traffic volume on a highway section based on an ETC gantry, characterized in that: The device comprises: An information determination unit, used to obtain basic data of a section of a highway network to be calculated and basic data of an ETC gantry, and determine basic information of an ETC exchange station according to the basic data of the section and the basic data of the ETC gantry; A data acquisition unit, used for acquiring first traffic volume data of a toll vehicle type of the ETC exchange station in real time according to the basic information; A data conversion unit, configured to convert the first traffic volume data into second traffic volume data of an inter-adjustment standard vehicle type based on a preset classification standard, wherein the preset classification standard includes a classification standard for toll vehicle types in an expressway ETC toll collection system and a classification standard for highway inter-adjustment standard vehicle types; The traffic volume calculation unit is used to collect statistics on the second traffic volume data to determine the traffic volume of each standard vehicle model at the ETC intercommunication station.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, it implements a method for calculating real-time traffic volume on a highway section based on an ETC gantry as described in any one of claims 1-7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements a method for calculating real-time traffic volume on a highway section based on an ETC gantry as described in any one of claims 1-7.

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