A method for identifying vehicle paths on highways

Abstract

The present invention discloses a method for identifying vehicle paths on highways, which belongs to the field of electronic communication technology for highways. The method comprises the following steps: S1, a vehicle enters the highway through an ETC gantry at a highway entrance, the ETC gantry transmits path identification point information to an OBU via an RSU radio frequency device, and transmits the information to an on-board path identification system via the OBU; S2, a message broadcast receiving module and a comparison broadcast receiving module on the on-board path identification system respectively receive broadcast signals of a message broadcast base station and a comparison broadcast base station in a broadcast system, and an on-board broadcast device normally plays audio converted from the broadcast signals transmitted by the message broadcast base station; the method can calculate the precise driving route of the vehicle according to the positions of the message broadcast base station 11 and the comparison broadcast base station 12, and utilizes the existing wireless broadcast system, thereby greatly reducing cost investment, improving the accuracy of calculation of the ETC charging system, and ensuring the interests of users.

Description

Technical Field

[0001] The present invention relates to the technical field of highway electronic communications, and more particularly to a method for identifying a vehicle path on a highway. Background Art

[0002] The ETC (Electronic Toll Collection) system is a leading automated electronic toll collection system currently being researched and promoted internationally. It is suitable for vehicle toll collection on highways and in heavily trafficked bridge and tunnel environments. The On-Board Unit (OBU) is a standard component of the ETC system, mounted on the vehicle's windshield. When a vehicle passes through an ETC lane, the OBU communicates with equipment such as the Roadside Unit (RSU), allowing ETC toll collection to be processed without stopping. my country's expressway network is becoming increasingly complex, with an increasing number of ring networks and diversified investment entities. Furthermore, most expressway ETC systems have achieved nationwide connectivity. This necessitates accurate path recognition of vehicles traveling on highways to ensure a "mileage-based payment" system and ensure fair and reasonable allocation and reconciliation of tolls collected between different highway owners. Path recognition technology is a key topic in the field of intelligent transportation. It not only enables the informatization and intelligentization of vehicle and road management, effectively improving traffic efficiency and conserving energy, but also plays a crucial role in the calculation and accurate allocation of tolls. The current path recognition method used by ETC on my country's highways involves setting up a gantry at the path recognition point, with a 5.8GHz microwave antenna (RSU) installed for each lane. When a vehicle equipped with an ETC-equipped onboard unit (OBU) passes by, the code of the identification station is written into the OBU and inserted into the OBU's CPU card to achieve path recognition.

[0003] In the existing technology, the ETC gantry has limited accuracy in path recognition, and the adjacent two-way lanes can easily cause the radio frequency signal of the RSU in the ETC gantry system's lane in the same direction to cover the adjacent opposite lane, causing vehicles in the opposite lane to transact with the RSU in the same direction, resulting in erroneous deductions of fees. The main solutions currently available to solve the problem of erroneous reverse deductions include: reducing the signal strength of the RSU so that it only covers the lane in the same direction, and building an RSU radio frequency signal shielding wall in the middle green belt. However, while reducing the RSU signal strength can reduce the problem of erroneous reverse deductions to a certain extent, the effect is limited, and the reduced signal strength will affect the transaction success rate of vehicles in the same direction. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a method for identifying vehicle paths on highways, which can calculate the vehicle's precise driving route based on the positions of message broadcast base stations and comparison broadcast base stations, and utilize the existing wireless broadcast system, greatly reducing cost investment, and can improve the accuracy of ETC toll collection system calculations, thereby ensuring the interests of users.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A method for identifying a vehicle path on a highway comprises the following steps:

[0009] S1: The vehicle enters the highway through the ETC gantry at the entrance. The ETC gantry transmits the path identification point information to the OBU through the RSU radio frequency device, and then transmits it to the vehicle path identification system through the OBU;

[0010] S2, the message broadcast receiving module and the comparison broadcast receiving module on the vehicle path recognition system receive the broadcast signals of the message broadcast base station and the comparison broadcast base station in the broadcast system respectively, and the vehicle broadcast device normally plays the audio converted from the broadcast signal transmitted by the message broadcast base station;

[0011] S3, the message broadcast timestamp recognition module and the comparison broadcast timestamp recognition module on the vehicle path recognition system respectively recognize the message broadcast timestamp and the comparison broadcast timestamp in the signal received by the message broadcast receiving module and the comparison broadcast receiving module;

[0012] S4, the data processing module of the vehicle path recognition system calculates the distance between the vehicle and the message broadcast base station and the comparison broadcast base station by using the difference between the actual time and the message broadcast timestamp and the comparison broadcast timestamp;

[0013] S5, after a certain period of time, when the vehicle has traveled a certain distance, repeat S2-S4 to calculate the position of the vehicle after it moves;

[0014] S6, the vehicle path recognition system calls the broadcast base station distribution map based on the received path recognition point information, and uses the vehicle GPS in conjunction with the broadcast base station distribution map to identify and locate the vehicle path;

[0015] S7, modeling the vehicle movement path through the path modeling module, and transmitting the path data to the data storage module for storage;

[0016] S8, when the vehicle passes through the ETC gantry system on the expressway, the path marker points in the identification marker storage module are transmitted to the path identification point information through the RSU radio frequency device;

[0017] S9, the data processing module compares the information received from the path identification point information with the information stored in the data storage module, and corrects the path modeling module based on the comparison results;

[0018] S10: When a vehicle passes through an expressway exit, the RSU radio frequency device on the expressway exit ETC gantry system reads the path information stored in the data storage module and transmits the path information to the central management system.

[0019] S11, the charges are calculated by the central management system and then transmitted to the bank settlement system;

[0020] S12, the bank settlement system deducts fees according to the calculation results and completes the highway toll collection.

[0021] As a preferred solution of the present invention, the location codes of the message broadcast base station and the comparison broadcast base station are stored in a broadcast base station distribution map and correspond to the path landmark point classification on the ETC gantry system.

[0022] As a preferred solution of the present invention, the signal received by the comparison broadcast receiving module can be switched according to the signal received by the comparison broadcast base station, and a group of signals with the highest signal strength except the message broadcast signal is always selected.

[0023] As a preferred solution of the present invention, the vehicle-mounted path recognition system interacts with the vehicle-mounted navigation system for data.

[0024] As a preferred solution of the present invention, the data storage module stores vehicle registration information, user information and the read ETC card number.

[0025] As a preferred solution of the present invention, an alarm module is provided in the central management system, and the alarm module issues an alarm based on the analysis result of the path identification point information.

[0026] As a preferred solution of the present invention, the message broadcast receiving module and the comparison broadcast receiving module are provided with a timing module, and can be calibrated with the system timing module of the ETC gantry system when the vehicle passes through the ETC gantry system.

[0027] As a preferred solution of the present invention, the message broadcast receiving module and the comparison broadcast receiving module automatically switch at fixed intervals to select alternate message broadcast base stations and comparison broadcast base stations at adjacent locations.

[0028] As a preferred solution of the present invention, the data of the path modeling module can be displayed on a vehicle-mounted display screen.

[0029] As a preferred solution of the present invention, the message broadcast base station and the comparison broadcast base station are specific coordinate points selected from the broadcast antennas evenly arranged on both sides of the highway, and the specific coordinate points refer to vehicle path diversion locations such as forks and overpasses.

[0030] 3. Beneficial effects

[0031] Compared with the prior art, the advantages of the present invention are:

[0032] (1) This solution sets up a message broadcast receiving module 21 and a comparison broadcast receiving module 23 so that the message broadcast receiving module 21 and the comparison broadcast receiving module 23 can receive the message broadcast base station 11 and the comparison broadcast base station 12, and then extracts the message broadcast timestamp 13 and the comparison broadcast timestamp 14 in the signals transmitted by the message broadcast base station 11 and the comparison broadcast base station 12 through the message broadcast timestamp identification module 22 and the comparison broadcast timestamp identification module 24. By extracting the message broadcast timestamp 13 and the comparison broadcast timestamp 14 at intervals, the precise driving route of the vehicle can be calculated according to the positions of the message broadcast base station 11 and the comparison broadcast base station 12, and the existing wireless broadcast system is utilized, which greatly reduces the cost investment, and can improve the accuracy of the ETC charging system calculation, thereby ensuring the interests of users.

[0033] (2) This solution sets up a position storage device 32 and a broadcast base station distribution map 26 so that when a vehicle passes through the ETC gantry system 3, it can receive the path mark point information of the position storage device 32, thereby directly identifying the positions of the surrounding message broadcast base stations 11 and comparison broadcast base stations 12, assisting the operation of the equipment, greatly improving the screening efficiency of the equipment, and increasing the speed of path identification.

[0034] (3) This solution models the vehicle's travel path by setting up a path modeling module 28, which improves the convenience of storage and facilitates the central management system 5 to receive path data, and can be displayed intuitively on the vehicle display screen for easy use.

[0035] (4) This solution uses an alarm module set up in the central management system 5 to directly notify the highway police when the user's driving path is abnormal, so that the highway police can directly confirm the user's safety through the Sky Eye system, thereby improving the safety of users driving on the highway. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a workflow diagram of the present invention;

[0037] Figure 2 This is a system structure diagram of the present invention.

[0038] Description of the numbers in the figure:

[0039] 1. Broadcast system; 2. On-board path identification system; 3. ETC gantry system; 4. OBU; 5. Central management system; 11. Message broadcast base station; 12. Comparison broadcast base station; 13. Message broadcast timestamp; 14. Comparison broadcast timestamp; 21. Message broadcast receiving module; 22. Message broadcast timestamp identification module; 23. Comparison broadcast receiving module; 24. Comparison broadcast timestamp identification module; 25. On-board GPS; 26. Broadcast base station distribution map; 27. Data processing module; 28. Path modeling module; 31. RSU radio frequency equipment; 32. Location storage device; 41. Path identification point information; 42. Data storage module. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] To facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the relevant accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of the present invention. It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] Example:

[0044] See also Figure 1-2, a highway vehicle path recognition method, comprising the following steps:

[0045] S1, the vehicle enters the highway through the ETC gantry at the highway entrance. The ETC gantry transmits the path identification point information 41 to the OBU4 through the RSU radio frequency device 31, and then transmits it to the vehicle path identification system 2 through the OBU4;

[0046] S2, the message broadcast receiving module 21 and the comparison broadcast receiving module 23 on the vehicle path recognition system 2 receive the broadcast signals of the message broadcast base station 11 and the comparison broadcast base station 12 in the broadcast system 1 respectively, and the vehicle broadcast device normally plays the audio converted from the broadcast signal transmitted by the message broadcast base station 11;

[0047] S3, the message broadcast timestamp recognition module 22 and the comparison broadcast timestamp recognition module 24 on the vehicle path recognition system 2 respectively recognize the message broadcast timestamp 13 and the comparison broadcast timestamp 14 in the signals received by the message broadcast receiving module 21 and the comparison broadcast receiving module 23;

[0048] S4, the data processing module 27 on the vehicle path recognition system 2 calculates the distance between the vehicle and the message broadcast base station 11 and the comparison broadcast base station 12 by using the difference between the actual time and the message broadcast timestamp 13 and the comparison broadcast timestamp 14;

[0049] S5, after a certain period of time, when the vehicle has traveled a certain distance, repeat S2-S4 to calculate the position of the vehicle after it moves;

[0050] S6, the vehicle path recognition system 2 calls the broadcast base station distribution map 26 through the received path recognition point information 41, and uses the vehicle GPS 25 in conjunction with the broadcast base station distribution map 26 to identify and locate the vehicle path;

[0051] S7, modeling the vehicle movement path through the path modeling module 28, and transmitting the path data to the data storage module 42 for storage;

[0052] S8, when the vehicle passes through the ETC gantry system 3 on the highway section, the path marker points in the identification marker storage module 32 are transmitted to the path identification point information 41 through the RSU radio frequency device 31;

[0053] S9, the data processing module 27 compares the information received from the path identification point information 41 with the information in the data storage module 42, and corrects the path modeling module 28 based on the comparison result;

[0054] S10, when the vehicle passes through the highway exit, the RSU radio frequency device 31 on the highway exit ETC gantry system 3 reads the path information stored in the data storage module 42 and transmits the path information to the central management system 5;

[0055] S11, the central management system 5 calculates the charges and transmits them to the bank settlement system;

[0056] S12, the bank settlement system deducts fees according to the calculation results and completes the highway toll collection.

[0057] In this embodiment, by setting up a message broadcast receiving module 21 and a comparison broadcast receiving module 23, the message broadcast receiving module 21 and the comparison broadcast receiving module 23 can receive the message broadcast base station 11 and the comparison broadcast base station 12, and then the message broadcast timestamp identification module 22 and the comparison broadcast timestamp identification module 24 are used to extract the message broadcast timestamp 13 and the comparison broadcast timestamp 14 in the signals transmitted by the message broadcast base station 11 and the comparison broadcast base station 12. By extracting the message broadcast timestamp 13 and the comparison broadcast timestamp 14 at intervals, the precise driving route of the vehicle can be calculated according to the positions of the message broadcast base station 11 and the comparison broadcast base station 12, and the existing wireless broadcast system is utilized, which greatly reduces the cost investment, and can improve the accuracy of the ETC charging system calculation, thereby ensuring the interests of users.

[0058] Specifically, the location codes of the message broadcast base station 11 and the comparison broadcast base station 12 are stored in the broadcast base station distribution map 26 and correspond to the path landmark point classification on the ETC gantry system 3.

[0059] In this embodiment, by setting up a position storage device 32 and a broadcast base station distribution map 26, the vehicle can receive the path mark point information of the position storage device 32 when passing through the ETC gantry system 3, thereby directly identifying the positions of the surrounding message broadcast base stations 11 and comparison broadcast base stations 12, assisting the operation of the equipment, greatly improving the screening efficiency of the equipment, and increasing the speed of path identification.

[0060] Specifically, the signals received by the comparison broadcast receiving module 23 can be switched according to the signals received by the comparison broadcast base station 12, and a group of signals with the highest signal strength except the message broadcast signal is always selected.

[0061] In this embodiment, the signal strength of the comparison broadcast base station 12 is ensured to be clearly identified, thereby ensuring the accuracy of path identification.

[0062] Specifically, the vehicle-mounted path recognition system 2 exchanges data with the vehicle-mounted navigation system.

[0063] In this embodiment, the vehicle navigation system can assist in path recognition, thereby improving the accuracy of path recognition, and the vehicle path recognition system 2 can also assist the vehicle navigation system in positioning and navigating the vehicle, thereby improving the accuracy of GPS navigation.

[0064] Specifically, the data storage module 42 stores vehicle registration information, user information and the read ETC card number.

[0065] In this embodiment, the vehicle registration information, user information and ETC card number can be read through the ETC gantry system 3, which can more accurately identify and locate the vehicle, thereby improving the recognition accuracy.

[0066] Specifically, an alarm module is provided in the central management system 5 , and the alarm module issues an alarm based on the analysis result of the path identification point information 41 .

[0067] In this embodiment, when the analysis results of the alarm module are abnormal, the Ministry of Transport's Road Network Monitoring and Emergency Response Center can be contacted in a timely manner, so that the highway police can directly confirm the user's safety through the Sky Eye system, thereby improving the safety of users driving on the highway, such as abnormal paths and abnormal stay times.

[0068] Specifically, the message broadcast receiving module 21 and the comparison broadcast receiving module 23 are provided with timing modules, and can be calibrated with the timing module of the ETC gantry system 3 when the vehicle passes through the ETC gantry system 3.

[0069] In this embodiment, the accuracy of the timing module is ensured by a calibrated timing module, thereby improving the accuracy of the system in path identification.

[0070] Specifically, the message broadcast receiving module 21 and the comparison broadcast receiving module 23 automatically switch at regular intervals to select alternate message broadcast base stations 11 and comparison broadcast base stations 12 at adjacent locations.

[0071] In this embodiment, by switching the message broadcast base station 11 and the comparison broadcast base station 12 at adjacent positions, the signal strength of the message broadcast timestamp 13 and the comparison broadcast timestamp 14 received by the message broadcast receiving module 21 and the comparison broadcast receiving module 23 can be high, thereby ensuring the calculation and recognition effect.

[0072] Specifically, the data of the path modeling module 28 can be displayed on a vehicle-mounted display screen.

[0073] In this embodiment, the route modeling module 28 displays the route, and in conjunction with the electronic map, it is convenient for the user to view the driving record, thereby improving the practicality of the device.

[0074] Specifically, the message broadcast base station 11 and the comparison broadcast base station 12 are specific coordinate points selected from the broadcast antennas evenly arranged on both sides of the highway.

[0075] In this embodiment, the specific coordinate points refer to vehicle path diversion locations such as forks in the road and overpasses, which reduces the number of selected message broadcast base stations 11 and comparison broadcast base stations 12, and can narrow the selection range of the message broadcast receiving module 21 and the comparison broadcast receiving module 23, thereby reducing the calculation amount of the data processing module 27 and improving the calculation efficiency.

[0076] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A method for identifying vehicle paths on a highway, characterized in that: The steps include: S1, the vehicle enters the highway through the ETC gantry at the highway entrance, the ETC gantry transmits the path identification point information (41) to the OBU (4) through the RSU radio frequency device (31), and then transmits it to the vehicle path identification system (2) through the OBU (4); S2, receiving broadcast signals from the message broadcast base station (11) and the comparison broadcast base station (12) in the broadcast system (1) through the message broadcast receiving module (21) and the comparison broadcast receiving module (23) on the vehicle path recognition system (2), and the vehicle broadcast device normally plays the audio converted from the broadcast signal transmitted by the message broadcast base station (11); S3, the message broadcast timestamp recognition module (22) and the comparison broadcast timestamp recognition module (24) on the vehicle path recognition system (2) respectively recognize the message broadcast timestamp (13) and the comparison broadcast timestamp (14) in the signals received by the message broadcast receiving module (21) and the comparison broadcast receiving module (23); S4, the data processing module (27) on the vehicle path recognition system (2) calculates the distance between the vehicle and the message broadcast base station (11) and the comparison broadcast base station (12) by using the difference between the actual time and the message broadcast timestamp (13) and the comparison broadcast timestamp (14); S5, after a certain period of time, when the vehicle has traveled a certain distance, repeat S2-S4 to calculate the position of the vehicle after it moves; S6, the vehicle path recognition system (2) calls the broadcast base station distribution map (26) through the received path recognition point information (41), and locates the vehicle path through the vehicle GPS (25) in conjunction with the broadcast base station distribution map (26); S7, modeling the vehicle movement path through the path modeling module (28), and transferring the path data to the data storage module (42) for storage; S8, when the vehicle passes through the ETC gantry system (3) on the highway section, the path marking point in the identification marking point storage module (32) is transmitted to the path identification point information (41) through the RSU radio frequency device (31); S9, the data processing module (27) compares the information received from the path identification point information (41) with the information in the data storage module (42), and corrects the path modeling module (28) based on the comparison result; S10, when the vehicle passes through the highway exit, the RSU radio frequency device (31) on the highway exit ETC gantry system (3) reads the path information stored in the data storage module (42) and transmits the path information to the central management system (5); S11, the central management system (5) calculates the charges and transmits them to the bank settlement system; S12, the bank settlement system deducts the fee according to the calculation result and completes the highway toll collection; The position codes of the message broadcast base station (11) and the comparison broadcast base station (12) are stored in a broadcast base station distribution map (26) and correspond to the path landmark point classifications on the ETC gantry system (3); The signals received by the comparison broadcast receiving module (23) can be switched according to the signals received by the comparison broadcast base station (12), and a group of signals with the highest signal strength except the message broadcast signal is always selected; The message broadcast receiving module (21) and the comparison broadcast receiving module (23) automatically switch at fixed intervals to replace and select adjacent message broadcast base stations (11) and comparison broadcast base stations (12).

2. A method for identifying a vehicle path on a highway according to claim 1, characterized in that: The vehicle-mounted path recognition system (2) performs data interaction with the vehicle-mounted navigation system.

3. The method for identifying a vehicle path on a highway according to claim 2, wherein: The data storage module (42) stores vehicle registration information, user information and the read ETC card number.

4. A method for identifying a vehicle path on a highway according to claim 3, characterized in that: The central management system (5) is provided with an alarm module, and the alarm module issues an alarm based on the analysis result of the path identification point information (41).

5. The method for identifying a vehicle path on a highway according to claim 4, characterized in that: The message broadcast receiving module (21) and the comparison broadcast receiving module (23) are provided with timing modules, and can be calibrated with the timing module of the ETC gantry system (3) when the vehicle passes through the ETC gantry system (3).

6. The method for identifying a vehicle path on a highway according to claim 1, wherein: The data of the path modeling module (28) can be displayed on a vehicle-mounted display screen.

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