A method and system for optimizing ETC gantry information in a highway composite access card

Abstract

The application provides a highway composite pass card inner ETC gantry information optimization method and system, the method first acquires pass data of a current trip of a vehicle in the composite pass card, and all gantries in the same direction between adjacent hubs in the highway network are regarded as homogenized gantries and grouped to obtain multiple groups of homogenized gantries, then all gantries in the ETC gantry information of the highway composite pass card are optimized in quantity based on the multiple groups of homogenized gantries and by using a specific judgment method to obtain optimized ETC gantries, and the optimized ETC gantries are fitted to obtain a pass path of the vehicle, the number of gantries stored in the CPC card is effectively reduced, the space in the CPC card is effectively used, and for a vehicle driving for a long distance, more key path information can be saved in the CPC card, and thus the charging result of the networked charging system is more accurate.

Description

Technical Field

[0001] This invention relates to the field of intelligent highway technology, specifically to a method and system for optimizing ETC gantry information within a highway composite toll card. Background Technology

[0002] To improve the timeliness and convenience of inter-provincial logistics transportation, all provincial border toll stations on national highways have been dismantled, achieving a unified national network operation. This unified network operation follows the overall technical approach of "segmented tolling, exit collection." Highways retain entrance and exit toll stations, and ETC gantries are constructed between any two toll stations, between a toll station and a hub, or between hubs. The ETC gantry system includes ETC gantry software and provincial tolling module software. When a vehicle travels on the highway, the entrance toll station writes the entrance information into the vehicle's toll medium. When the vehicle passes through an ETC gantry deployed on the highway, the ETC gantry software reads the information from the toll medium, calculates the toll segmented by segment using the provincial tolling module, adds them up, and writes the toll calculation result back to the toll medium. When the vehicle exits the highway at the exit toll station, the information in the toll medium is used to complete the toll calculation and payment.

[0003] The toll collection medium is divided into the On-Board Unit (OBU) installed in the vehicles of ETC users and the ETC user card, and the Composite Toll Card (CPC Card) obtained by MTC users at the entrance station. Due to the long history and numerous batches of OBU issuance, early plans lacked route information, and to ensure compatibility with older users, route information was not recorded within the OBU. In 2019, the provincial border station project abolished the unified technical standard for CPC Cards, and route recording space was planned within the card, enabling its use across the entire network. The national highway network is now interconnected, with a large number of gantries. When a vehicle travels on the highway, the information of each gantry it passes through should, in principle, be written into the CPC Card. This allows for accurate route matching for all gantries at the exit, enabling precise toll calculation.

[0004] Currently, based on the unified technical specifications of the "one network" for highways, the storage space planning of CPC cards is uniform across the entire network. However, the space within CPC cards is limited. To make full use of the limited storage space within CPC cards, there is an urgent need for an optimization method for ETC gantry information within highway composite toll cards. This method should optimize the number of ETC gantries stored within the card while ensuring that the exit toll station can perform route fitting, and record as much valid ETC gantry route information as possible within the CPC card. This will enable accurate route fitting and toll calculation at the exit toll station. Summary of the Invention

[0005] To address the problems of limited storage space in existing highway toll collection systems, such as the inability to accurately fit routes at exit toll booths and inaccurate toll calculation, this invention provides a method for optimizing ETC gantry information within a highway composite toll card. Based on the vehicle's current travel data and multiple sets of homogeneous gantries within the composite toll card, a specific judgment method is used to optimize the number of all gantries in the ETC gantry information within the highway composite toll card. This allows the CPC card to store more critical path information, thereby improving the accuracy of the toll calculation results of the networked toll collection system. This invention also relates to a system for optimizing ETC gantry information within a highway composite toll card.

[0006] The technical solution of the present invention is as follows:

[0007] A method for optimizing ETC gantry information within a highway composite toll card, characterized by comprising the following steps:

[0008] Information acquisition steps: Acquire the current travel data of a vehicle in the composite toll card, the travel data including information of at least two ETC gantries passed through in this trip;

[0009] Homogeneous gantry grouping steps: All gantries located in the same direction between adjacent hubs in the highway network are treated as homogeneous gantries and grouped to obtain multiple groups of homogeneous gantries;

[0010] Gantry optimization steps: Based on multiple sets of homogeneous gantries, determine whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, delete the first gantry. Then, determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, delete the second gantry. If the starting gantry and the first gantry are not homogeneous gantries, retain both the starting gantry and the first gantry. If the starting gantry and the second gantry are not homogeneous gantries, retain both the starting gantry and the second gantry.

[0011] Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantries adjacent to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantries. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantries and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and adjacent gantries. Retain the corresponding non-homogeneous gantries and the final gantry. Use all retained gantries as the optimized ETC gantries.

[0012] The route fitting process involves fitting the optimized ETC gantry to obtain the vehicle's route.

[0013] Preferably, in the homogenized gantry grouping step, the first homogenized gantry located after the previous hub in the adjacent hubs is retained.

[0014] Preferably, the homogenized gantry grouping step involves extracting a gantry from the ETC gantry information of the highway network, and obtaining the tolling start and tolling end points adjacent to the extracted gantry. When the tolling start point is a ramp interchange, the gantry information of the ramp interchange as the tolling end point is obtained, and gantries in the opposite direction to the extracted gantry are excluded. Gantries in the same direction as the extracted gantry are retained as homogenized gantries, and the search for homogenized gantries continues forward until the tolling start point is a hub. The preceding homogeneous gantry search is complete; when the billing endpoint is a ramp interchange, the gantry information of the ramp interchange as the billing starting point is obtained, and gantry in the opposite direction to the extracted gantry is excluded. Gantry in the same direction as the extracted gantry is retained as homogeneous gantry, and the search for homogeneous gantry continues until the billing endpoint is another hub, indicating that the subsequent homogeneous gantry search is complete; all gantry retained by the preceding and subsequent homogeneous gantry searches belong to a group of homogeneous gantry;

[0015] The process continues to extract gantries from the remaining ETC gantry information and search for homogeneous gantries until all gantries in the ETC gantry information have been homogeneously grouped.

[0016] Preferably, in the information acquisition step, the passage data further includes the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the expressway for this trip, the code and toll amount of each ETC gantry in this trip, the total amount due for this trip, and the total amount actually received for this trip.

[0017] Preferably, after the route fitting step, an amount calculation step is also included: calculating the cumulative amount of the vehicle's trip based on the vehicle's route, the code of each ETC gantry in this trip, and the toll amount.

[0018] A highway composite toll card-based ETC gantry information optimization system, characterized in that it includes an information acquisition module, a homogeneous gantry grouping module, a gantry optimization module, and a traffic path fitting module connected in sequence.

[0019] The information acquisition module acquires the current travel data of a vehicle in the composite toll card, and the travel data includes information on at least two ETC gantries passed through during this trip;

[0020] The homogenized gantry grouping module takes all gantries located in the same direction between adjacent hubs in the highway network as homogenized gantries and groups them to obtain multiple groups of homogenized gantries.

[0021] The gantry optimization module, based on multiple sets of homogeneous gantries, determines whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, the first gantry is deleted. Then, it continues to determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, the second gantry is deleted. If the starting gantry and the first gantry are non-homogeneous gantries, both the starting gantry and the first gantry are retained. If the starting gantry and the second gantry are non-homogeneous gantries, both the starting gantry and the second gantry are retained.

[0022] Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantries adjacent to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantries. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantries and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and adjacent gantries. Retain the corresponding non-homogeneous gantries and the final gantry. Use all retained gantries as the optimized ETC gantries.

[0023] The passage path fitting module fits the optimized ETC gantry to obtain the vehicle's passage path.

[0024] Preferably, in the homogeneous gantry grouping module, the first homogeneous gantry located after the previous hub in the adjacent hubs is retained.

[0025] Preferably, the homogenized gantry grouping module extracts a gantry from the ETC gantry information of the highway network and obtains the tolling start and tolling end points adjacent to the extracted gantry. When the tolling start point is a ramp interchange, it obtains the gantry information of the ramp interchange as the tolling end point and excludes gantries in the opposite direction to the extracted gantry, retaining gantries in the same direction as the extracted gantry as homogenized gantries, and continues to search for homogenized gantries forward until the tolling start point is a hub. The preceding homogeneous gantry search is complete; when the billing endpoint is a ramp interchange, the gantry information of the ramp interchange as the billing starting point is obtained, and gantry in the opposite direction to the extracted gantry is excluded. Gantry in the same direction as the extracted gantry is retained as homogeneous gantry, and the search for homogeneous gantry continues until the billing endpoint is another hub, indicating that the subsequent homogeneous gantry search is complete; all gantry retained by the preceding and subsequent homogeneous gantry searches belong to a group of homogeneous gantry;

[0026] The process continues to extract gantries from the remaining ETC gantry information and search for homogeneous gantries until all gantries in the ETC gantry information have been homogeneously grouped.

[0027] Preferably, the passage data also includes the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the expressway during this trip, the code and toll amount of each ETC gantry during this trip, the total amount due for this trip, and the total amount actually received for this trip.

[0028] Preferably, the system also includes a fee calculation module, which is connected to the route fitting module. The fee calculation module calculates the total fee for the vehicle's trip based on the vehicle's route, the code of each ETC gantry in the current trip, and the toll amount.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention provides a method for optimizing ETC gantry information within a highway composite pass card, which can also be understood as a method for representing ETC gantry path information within a highway composite pass card. First, the current travel data of a vehicle is obtained from the composite pass card (CPC card). All gantries in the same direction between adjacent interchanges in the highway network are grouped as homogeneous gantries, resulting in multiple groups of homogeneous gantries. Then, based on these multiple groups of homogeneous gantries and using a specific judgment method, the number of gantries in the ETC gantry information within the highway composite pass card is optimized to obtain optimized ETC gantries. Therefore, the homogeneous gantry grouping step and the gantry optimization step can also be understood as path information correction steps. This optimizes the toll gate information stored in the CPC card and saves the current gantry information to the toll gate information. The optimized ETC gantries are then fitted to obtain the vehicle's travel path, effectively reducing the number of gantries stored in the CPC card, effectively utilizing the space within the CPC card, and enabling the CPC card to store more critical path information. This invention optimizes the number of ETC gantries stored in the CPC card while meeting the requirements for route fitting at exit toll stations. This allows the CPC card to store as many gantries as possible, satisfying the tolling needs of exit toll stations. A statistical comparative analysis of the ETC gantry information optimization method in the highway composite toll card of this invention and existing methods for highway composite toll card tolling path information reveals that the optimized tolling path representation method of this invention only retains and stores key ETC gantry information in the route, reducing the number of gantries stored in the CPC card. This effectively utilizes the space within the CPC card while ensuring the accuracy of route fitting at exit toll stations. It better supports the route fitting needs of long-distance vehicles, and for long-distance vehicles, the CPC card can store more key path information, thus making the tolling results of the network toll collection system more accurate. This also reduces complaints from drivers regarding highway tolls and provides valuable experience for other provinces to solve similar problems.

[0031] This invention also relates to an ETC gantry information optimization system within a highway composite toll card. This system corresponds to the aforementioned method for optimizing ETC gantry information within a highway composite toll card. It can be understood as a system that implements the aforementioned method for optimizing ETC gantry information within a highway composite toll card. The system includes an information acquisition module, a homogeneous gantry grouping module, a gantry optimization module, and a travel path fitting module. These modules work together to optimize the number of all gantries in the ETC gantry information within the composite toll card based on the current travel data of the vehicle and multiple groups of homogeneous gantries. A specific judgment method is used to optimize the number of gantries in the ETC gantry information within the highway composite toll card, resulting in optimized ETC gantries. The optimized ETC gantries are then fitted to obtain the vehicle's travel path. This effectively reduces the number of gantries stored in the CPC card, effectively utilizes the space within the CPC card, and allows for the storage of more critical path information in the CPC card for long-distance travel, thereby making the billing results of the network toll collection system more accurate. Attached Figure Description

[0032] Figure 1 This is a flowchart of the early warning method based on the short-term traffic prediction algorithm of the present invention.

[0033] Figure 2 This is a partial schematic diagram of the road network structure of the present invention.

[0034] Figure 3 This is a schematic diagram of the gantry along the vehicle travel path of the present invention.

[0035] Figure 4 This is a schematic diagram of the ETC gantry stored in the CPC card according to the present invention. Detailed Implementation

[0036] The present invention will now be described with reference to the accompanying drawings.

[0037] When a vehicle travels on a highway, it receives a CPC card at the entrance toll station. The entrance toll station writes its information into the CPC card. When the vehicle passes through an ETC gantry deployed along the highway, the ETC gantry software reads the information from the CPC card, calculates and accumulates the toll in segments using the provincial tolling module, and writes the toll calculation result back to the CPC card. When the vehicle exits the highway at the exit toll station, it uses the information in the CPC card to complete the toll calculation and payment. This invention mainly describes an optimized method for representing the toll information stored in the CPC card when the toll medium is CPC.

[0038] This invention relates to a method for optimizing ETC gantry information within a highway composite toll card. While ensuring route fitting at the exit toll station, the method optimizes the number of ETC gantries stored in the CPC card, recording as much valid ETC gantry route information as possible within the CPC card. This allows for accurate route fitting and toll calculation at the exit toll station. A flowchart of this method is shown below. Figure 1 As shown, the steps are as follows:

[0039] I. Information Acquisition Steps: Acquire the current travel data of a vehicle in the composite toll card, wherein the travel data includes information on at least two ETC gantries passed through during this trip.

[0040] Specifically, when a vehicle arrives at the highway, it receives a CPC card at the entrance toll station. The entrance toll station writes the entrance station information into the composite toll card (CPC card). When the vehicle passes through the ETC gantries deployed on the highway, the ETC gantry software interacts with the vehicle's passage medium through the antenna deployed on the gantry to obtain the vehicle's passage data. The passage data includes information on at least two ETC gantries passed through during this trip, the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the highway during this trip, the code and toll amount of each ETC gantry during this trip, the total amount due for this trip, and the total amount actually received for this trip.

[0041] II. Homogeneous Gantry Grouping Steps: All gantries in the same direction between adjacent interchanges in the highway network are considered homogeneous gantries and grouped into multiple groups. This step essentially involves grouping all gantry basic information according to homogeneous attributes, forming gantry clusters. Preferably, the first gantry in the homogeneous gantry group that follows the preceding interchange in an adjacent interchange is retained.

[0042] Specifically, a homogeneous gantry refers to all mainline gantries in the same direction between two adjacent interchanges in a highway network. This group of mainline gantries between two adjacent interchanges forms an interchange cross-section. When a vehicle does not enter or exit at this interchange cross-section, as long as one of the gantries is successfully identified, it indicates that the vehicle has passed through all the gantries of that interchange cross-section. Based on the highway network structure, all gantries in the same direction between adjacent interchanges in the highway network are considered homogeneous gantries and grouped into multiple groups of homogeneous gantries. Each group of homogeneous gantries actually represents an interchange cross-section.

[0043] Further, this step involves extracting a gantry from the ETC gantry information of the highway network and obtaining the tolling start and tolling end points adjacent to the extracted gantry. When the tolling start point is a ramp interchange, the gantry information of the ramp interchange as the tolling end point is obtained, and gantries in the opposite direction to the extracted gantry are excluded. Gantries in the same direction as the extracted gantry are retained as homogeneous gantries, and the search for homogeneous gantries continues forward until the tolling start point is a hub, indicating that the search for homogeneous gantries has ended. When the tolling end point is a ramp interchange, the tolling start point of the ramp interchange is obtained. The system extracts gantry information as the starting point for toll collection and excludes gantry in the opposite direction from the extracted gantry. Gantry in the same direction as the extracted gantry are retained as homogeneous gantry, and the search for homogeneous gantry continues until the toll collection endpoint is another hub, indicating the end of the subsequent homogeneous gantry search. All gantry retained from the previous and subsequent homogeneous gantry searches belong to one group of homogeneous gantry. Then, gantry information is continuously extracted from the remaining ETC gantry information and its homogeneous gantry search is performed until all gantry information in the ETC gantry information is homogeneously grouped. Specifically, the homogeneous gantry grouping steps are as follows (using...). Figure 2 (The following is an example of a partial schematic diagram of the road network structure):

[0044] 1) First, randomly select a gantry from the basic information of the gantry in the highway network. For example, select gantry 1C2714. The tolling start point of gantry 1C2714 is the 5125 ramp interchange, and the tolling end point is the 5124 ramp interchange.

[0045] 2) Search forward for homogeneous gantries. Since the 5125 ramp interchange is not a hub, obtain the basic information of the gantries with the 5125 ramp interchange as the tolling endpoint, and obtain gantries 1D2713 and 1C2718 (in fact, there is also a ramp virtual gantry with the 0222 toll station as the tolling starting point and the 5125 ramp interchange as the tolling endpoint. Since homogeneous gantries do not include ramp virtual gantries, they are not marked in the figure).

[0046] 3) After excluding the reverse gantry 1D2713, only gantry 1C2718 remains. Therefore, gantry 1C2718 and gantry 1C2714 are homogeneous gantry (if multiple gantry information exists after excluding the reverse gantry, it means that the basic gantry information is incorrect and needs to be verified).

[0047] 4) Repeat steps 2) and 3) to continue searching for homogeneous gantry. Since the billing starting point for gantry 1C2718 is hub 7064, it means that the search for the preceding homogeneous gantry has ended, and the search continues.

[0048] 5) Search backward for homogeneous gantries. Since the 5124 ramp interchange is not a hub, obtain the basic information of the gantries with the 5124 ramp interchange as the tolling starting point, and obtain gantries 1C2712 and 1D2713 (similarly, since homogeneous gantries do not include ramp virtual gantries, the ramp virtual gantries with the 5124 ramp interchange as the tolling starting point and the 0223 toll station as the tolling ending point are not marked in the figure).

[0049] 6) After excluding the reverse gantry 1D2713, only gantry 1C2712 remains. Therefore, gantry 1C2712 and gantry 1C2714 are homogeneous gantry.

[0050] 7) Repeat steps 5) and 6) to continue searching for homogeneous gantry. Since the billing endpoint of gantry 1C2712 is hub 7063, it means that the search for subsequent homogeneous gantry has ended, and the search continues.

[0051] 8) In the gantry basic information, 1C2712, 1C2714, and 1C2718 belong to a homogeneous group of gantries. After excluding these three gantries, randomly select a gantry from the remaining gantry basic information and search for its homogeneous gantries. Repeat steps 2) to 7) until all gantries in the ETC gantry information have been homogeneously grouped. The gantry grouping results after homogeneous grouping and the corresponding hubs are shown in Table 1.

[0052] Table 1

[0053]

[0054] III. Gantry Optimization Steps: Based on multiple sets of homogeneous gantries, determine whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, delete the first gantry. Then, determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, delete the second gantry. If the starting gantry and the first gantry are non-homogeneous gantries, retain both the starting gantry and the first gantry. If the starting gantry and the second gantry are non-homogeneous gantries, retain both the starting gantry and the second gantry.

[0055] Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantry next to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantry. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantry and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and the adjacent gantry. Retain the corresponding non-homogeneous gantries and the final gantry. Use all the retained gantries as the optimized ETC gantries.

[0056] IV. Route Fitting and Fee Calculation Steps: This includes the route fitting step and the fee calculation step, which serves as the optimization step. The optimized ETC gantry is fitted to obtain the vehicle's route. Based on the vehicle's route, the code of each ETC gantry in this trip, and the toll amount, the cumulative fee for this trip is calculated. Finally, the ETC gantry software writes the cumulative fee for this trip to the vehicle's toll storage. Based on the toll calculation results, and in accordance with the interface standard specifications, it outputs the toll information such as the current ETC gantry's passage information, completing the closed-loop transaction process for the current ETC gantry.

[0057] Example:

[0058] The highway composite toll card (CPC card) contains information about at least two ETC gantries a vehicle has passed through during its current trip. The ETC gantry information sequentially records all successfully transacted ETC gantries from the vehicle's entry toll station to its arrival at the current ETC gantry. For example... Figure 3 As shown in the diagram, G1, G2, G3, G4, G5, G6, G7, G8, G9, and G10 are all ETC gantries. The vehicle enters the highway from En and will pass through gantries G1, G2, G3, G4, G5, G6, G7, and G8 in sequence before exiting the highway from Ex.

[0059] Then, all gantry basic information is grouped according to homogeneity attributes to form gantry clusters, resulting in multiple groups of homogeneous gantries. Based on these multiple groups of homogeneous gantries, the information of at least two ETC gantries stored in the vehicle's CPC card (such as the starting gantry and the first gantry adjacent to the starting gantry) is optimized. First, it is determined whether the starting gantry G1 and the first gantry G2 adjacent to the starting gantry are homogeneous gantries. Figure 3It is known that G1 and G2 are homogeneous gantries. Since G1 is the starting gantry, G2 is deleted. Then, it is determined whether G1 and the second gantry adjacent to the first gantry, G3, are homogeneous gantries. Since G1 and G3 are non-homogeneous gantries, both G1 and G3 are retained. Similarly, G3, G4, G5, and G6 are all homogeneous gantries. Since the vehicle information stored in the ETC gantry closest to the hub is more accurate, G4, G5, and G6 are deleted. G3 and G7 are non-homogeneous gantries, so both G3 and G7 are retained. G7 and G8 are homogeneous gantries, so G8 should be deleted. However, since G8 is the final gantry, both G7 and G8 are retained. Therefore, after optimization, the ETC gantry information stored in the vehicle's CPC card is G1, G3, G7, and G8. The optimized ETC gantries stored in the CPC card are as follows: Figure 4 As shown.

[0060] When a transaction is completed at the exit toll station, the ETC gantry information stored in the vehicle's CPC card sequentially stores eight ETC gantries: G1, G2, G3, G4, G5, G6, G7, and G8 (in the order of successfully completed transactions). This reduces the number of gantries recorded from eight to four (G1, G3, G7, and G8), decreasing the number of recorded gantries by half. This effectively utilizes the space within the CPC card while ensuring the accuracy of the exit toll station's route fitting and toll calculation results. It should be noted that because the vehicle uses the gantries in the ETC gantry information for route fitting at the exit toll station, and because there are passing gantries between adjacent toll stations, the toll path obtained using the pre-optimized and post-optimized ETC gantry information is consistent.

[0061] This invention also relates to an ETC gantry information optimization system within a highway composite toll card. This system corresponds to the aforementioned method for optimizing ETC gantry information within a highway composite toll card, and can be understood as a system that implements the aforementioned method. The system includes, in sequence, an information acquisition module, a homogenized gantry grouping module, a gantry optimization module, and a traffic path fitting module. Specifically,

[0062] The information acquisition module acquires the current travel data of a vehicle in the composite toll card, and the travel data includes information on at least two ETC gantries passed through during this trip;

[0063] The homogenized gantry grouping module takes all gantries located in the same direction between adjacent hubs in the highway network as homogenized gantries and groups them to obtain multiple groups of homogenized gantries.

[0064] The gantry optimization module, based on multiple sets of homogeneous gantries, determines whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, the first gantry is deleted. Then, it continues to determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, the second gantry is deleted. If the starting gantry and the first gantry are non-homogeneous gantries, both the starting gantry and the first gantry are retained. If the starting gantry and the second gantry are non-homogeneous gantries, both the starting gantry and the second gantry are retained.

[0065] Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantries adjacent to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantries. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantries and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and adjacent gantries. Retain the corresponding non-homogeneous gantries and the final gantry. Use all retained gantries as the optimized ETC gantries.

[0066] The passage path fitting module fits the optimized ETC gantry to obtain the vehicle's passage path.

[0067] In other words, the aforementioned homogenized gantry grouping module and gantry optimization module can also be understood as path information correction modules, which optimize the gantry information stored in the CPC card and save the current gantry information into the gantry information.

[0068] Preferably, in the homogeneous gantry grouping module, the first homogeneous gantry located after the previous gantry in the adjacent gantry is retained.

[0069] Preferably, the homogeneous gantry grouping module extracts a gantry from the ETC gantry information of the highway network and obtains the tolling start and tolling end points adjacent to the extracted gantry. When the tolling start point is a ramp interchange, it obtains the gantry information of the ramp interchange as the tolling end point and excludes gantry in the opposite direction to the extracted gantry, retaining gantry in the same direction as the extracted gantry as homogeneous gantry, and continues to search for homogeneous gantry forward until the tolling start point is a hub, indicating that the search for the preceding homogeneous gantry is complete; when the tolling end point is a ramp interchange, it obtains... The tolling starting point is the ramp interchange. The tolling starting point is used to select gantry information, and gantry information in the opposite direction to the selected gantry is excluded. Gantry information in the same direction as the selected gantry is retained as homogeneous gantry information. The search for homogeneous gantry information continues until the tolling endpoint is another hub, indicating that the search for homogeneous gantry information for the next phase is complete. All gantry information retained by the previous and subsequent homogeneous gantry searches belongs to a group of homogeneous gantry information. The search continues to extract gantry information from the remaining ETC gantry information and search for its homogeneous gantry information until all gantry information in the ETC gantry information is homogeneously grouped.

[0070] Preferably, the passage data also includes the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the expressway during this trip, the code and toll amount of each ETC gantry during this trip, the total amount due for this trip, and the total amount actually received for this trip.

[0071] Preferably, it also includes a fee calculation module, which is connected to the route fitting module: used to calculate the cumulative fee for the vehicle's current trip based on the vehicle's route, the code of each ETC gantry in this trip, and the toll amount.

[0072] This invention provides an objective and scientific method and system for optimizing ETC gantry information within a highway composite toll card. Based on the vehicle's current travel data and multiple sets of homogeneous gantries within the composite toll card, and employing a specific judgment method, the quantity of all gantries within the ETC gantry information of the highway composite toll card is optimized. This allows for more efficient use of the limited space within the CPC card, enabling the storage of more critical path information and thus improving the accuracy of the toll calculation results of the network toll collection system. Therefore, this invention also provides a method and system for representing ETC gantry path information within a CPC card. The scope of this invention relates to the method of recording path information within the CPC card, aiming to record as much valid ETC gantry path information as possible within the CPC card, thereby enabling accurate path fitting and toll calculation at the exit toll station.

[0073] It should be noted that the specific embodiments described above enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although the present invention has been described in detail with reference to the accompanying drawings and embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention. In short, all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention patent.

Claims

1. A method for optimizing ETC gantry information within a highway composite toll card, characterized in that, Includes the following steps: Information acquisition steps: Acquire the current travel data of a vehicle in the composite toll card, the travel data including information of at least two ETC gantries passed through in this trip; Homogenized gantry grouping steps: All gantries in the same direction between adjacent interchanges in the highway network are grouped as homogeneous gantries. Specifically, this includes: extracting a gantry from the ETC gantry information of the highway network, and obtaining the tolling start and tolling end points adjacent to the extracted gantry. When the tolling start point is a ramp interchange, the gantry information of the ramp interchange as the tolling end point is obtained, and gantries in the opposite direction to the extracted gantry are excluded. The gantry in the same direction as the extracted gantry is retained as homogeneous gantries, and the process continues forward. The search for homogeneous gantries continues until the tolling start point is a hub, indicating the end of the previous homogeneous gantry search. When the tolling end point is a ramp interchange, the gantry information of the ramp interchange as the tolling start point is obtained, and gantries in the opposite direction to the extracted gantries are excluded. Gantries in the same direction as the extracted gantries are retained as homogeneous gantries, and the search for homogeneous gantries continues until the tolling end point is another hub, indicating the end of the subsequent homogeneous gantry search. All gantries retained in the previous and subsequent homogeneous gantry searches belong to a group of homogeneous gantries. Continuously extract gantries from the remaining ETC gantry information and search for their homogeneous gantries until all gantries in the ETC gantry information are homogeneously grouped, resulting in multiple groups of homogeneous gantries. Gantry optimization steps: Based on multiple sets of homogeneous gantries, determine whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, delete the first gantry. Then, determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, delete the second gantry. If the starting gantry and the first gantry are not homogeneous gantries, retain both the starting gantry and the first gantry. If the starting gantry and the second gantry are not homogeneous gantries, retain both the starting gantry and the second gantry. Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantries adjacent to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantries. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantries and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and adjacent gantries. Retain the corresponding non-homogeneous gantries and the final gantry. Use all retained gantries as the optimized ETC gantries. The route fitting process involves fitting the optimized ETC gantry to obtain the vehicle's route.

2. The method for optimizing ETC gantry information within a highway composite toll card according to claim 1, characterized in that, In the homogenized gantry grouping step, the first homogenized gantry located after the previous hub in the adjacent hubs is retained.

3. The method for optimizing ETC gantry information within a highway composite toll card according to claim 1, characterized in that, In the information acquisition step, the passage data also includes the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the expressway for this trip, the code and toll amount of each ETC gantry in this trip, the total amount due for this trip, and the total amount actually received for this trip.

4. The method for optimizing ETC gantry information within a highway composite toll card according to claim 3, characterized in that, Following the route fitting step, there is also a cost calculation step: calculating the cumulative cost of the vehicle's trip based on the vehicle's route, the code of each ETC gantry in this trip, and the toll amount.

5. A highway composite toll card-based ETC gantry information optimization system, characterized in that, It includes an information acquisition module, a homogeneous gantry grouping module, a gantry optimization module, and a passage path fitting module, which are connected in sequence. The information acquisition module acquires the current travel data of a vehicle in the composite toll card, and the travel data includes information on at least two ETC gantries passed through during this trip; The homogenized gantry grouping module groups all gantries in the same direction between adjacent interchanges in the highway network as homogenized gantries. Specifically, it includes: extracting a gantry from the ETC gantry information of the highway network, obtaining the tolling start and tolling end points adjacent to the extracted gantry; when the tolling start point is a ramp interchange, obtaining the gantry information of the ramp interchange as the tolling end point, excluding gantries in the opposite direction to the extracted gantry, retaining gantries in the same direction as the extracted gantry as homogenized gantries, and continuing to group... The search for homogeneous gantries continues until the tolling start point is a hub, indicating the end of the previous homogeneous gantry search. When the tolling end point is a ramp interchange, the gantry information of the ramp interchange as the tolling start point is obtained, and gantries in the opposite direction to the extracted gantries are excluded. Gantries in the same direction as the extracted gantries are retained as homogeneous gantries, and the search for homogeneous gantries continues until the tolling end point is another hub, indicating the end of the subsequent homogeneous gantry search. All gantries retained in the previous and subsequent homogeneous gantry searches belong to a group of homogeneous gantries. Continuously extract gantries from the remaining ETC gantry information and search for their homogeneous gantries until all gantries in the ETC gantry information are homogeneously grouped, resulting in multiple groups of homogeneous gantries. The gantry optimization module, based on multiple sets of homogeneous gantries, determines whether the starting gantry and the first gantry adjacent to the starting gantry in the ETC gantry information are homogeneous gantries. If they are homogeneous gantries, the first gantry is deleted. Then, it continues to determine whether the starting gantry and the second gantry adjacent to the first gantry are homogeneous gantries. If they are homogeneous gantries, the second gantry is deleted. If the starting gantry and the first gantry are non-homogeneous gantries, both the starting gantry and the first gantry are retained. If the starting gantry and the second gantry are non-homogeneous gantries, both the starting gantry and the second gantry are retained. Repeat the process of determining homogeneous gantries for the starting gantry. Delete all gantries that are homogeneous with the starting gantry in sequence. Then, determine whether the starting gantry and the adjacent gantries adjacent to the last deleted gantry are non-homogeneous gantries. If they are non-homogeneous gantries, retain the starting gantry and the adjacent gantries. Then, determine all gantries that are homogeneous with the adjacent gantry according to the same process as the starting gantry and delete them. Retain the adjacent gantries and the gantries that are non-homogeneous with the adjacent gantry. Then, determine each gantry that the vehicle passes through in the current journey according to the same process as the starting gantry and adjacent gantries. Retain the corresponding non-homogeneous gantries and the final gantry. Use all retained gantries as the optimized ETC gantries. The passage path fitting module fits the optimized ETC gantry to obtain the vehicle's passage path.

6. The highway composite toll card ETC gantry information optimization system according to claim 5, characterized in that, In the homogeneous gantry grouping module, the first homogeneous gantry located after the previous gantry in the adjacent gantry is retained.

7. The highway composite toll card ETC gantry information optimization system according to claim 5, characterized in that, The passage data also includes the ETC gantry code and time of the current transaction, the entrance toll station code and time when entering the expressway during this trip, the code and toll amount of each ETC gantry during this trip, the total amount due for this trip, and the total amount actually received for this trip.

8. The highway composite toll card ETC gantry information optimization system according to claim 7, characterized in that, It also includes a fee calculation module, which is connected to the route fitting module. The fee calculation module calculates the total fee for the vehicle's trip based on the vehicle's route, the code of each ETC gantry in the trip, and the toll amount.

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