Automatic identification and disposal method and system for reversing of vehicle on ETC (Electronic Toll Collection) lane

Abstract

The invention provides an ETC lane vehicle backing-up automatic identification and disposal method and system, and the method comprises the steps: receiving a vehicle detection signal from a vehicle detector, detecting a backing-up vehicle based on the time sequence of vehicle existence and no vehicle signal change through vehicle detection, and automatically identifying the backing-up vehicle through an ETC system; for the automatically identified reversing vehicles, reading the transaction states of the automatically identified reversing vehicles, and modifying the vehicle queue for the reversing vehicles in different transaction states according to a preset flow rule; wherein the transaction state comprises transaction success, transaction failure and no transaction label. According to the invention, the vehicle going out of the ETC lane can be accurately positioned, and the vehicle queue can be automatically processed and corrected. The vehicle passing efficiency of the highway ETC lane is effectively improved, and the traffic jam of the lane is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ETC lane vehicle identification and management, and in particular to an automatic identification and handling method and system for reversing vehicles in an ETC lane. Background Art

[0002] The Electronic Toll Collection (ETC) system is a common toll collection method on highways. It uses microwave communication between the On Board Unit (OBU, also known as the on-board electronic tag) installed on the vehicle windshield and the microwave antenna of the Road Side Unit (RSU) on the ETC lane of the toll station, and uses computer Internet technology to conduct settlement processing with the bank in the back-end, so that vehicles can pay tolls without stopping at road and bridge toll stations, thereby improving the toll collection efficiency of highways.

[0003] Now, more and more toll stations adopt the "booth-free" design concept in accordance with the ideas of economy and intelligence, and the ETC lanes are generally unmanned. When the vehicle in the ETC lane fails to trade due to various reasons, or a non-ETC vehicle mistakenly enters the ETC lane and cannot pass, the system needs to handle it automatically. For the lane layout with barriers behind, since the lane is long and can accommodate multiple vehicles, when a vehicle in the queue reverses, it needs to be accurately located and correctly handled. Among them, the queue refers to one or more vehicle queues maintained by the automatic processing system (it may be one lane for one vehicle queue), which is used to synchronize the status of all vehicles in the ETC lane in real time.

[0004] At present, the handling of vehicle reversing in ETC lanes is mainly based on the signals of two vehicle detectors to determine the direction of vehicle travel. However, the existing technology for handling vehicle reversing situations, especially when facing multiple vehicles reversing, is prone to queue errors, thereby reducing the efficiency of passing vehicles in the ETC lanes of highways and may easily cause congestion at toll stations during peak traffic.

[0005] Therefore, how to provide a method for more comprehensive and accurate processing of vehicle reversing situations in ETC lanes is a technical problem that needs to be solved urgently. Summary of the invention

[0006] In view of this, an embodiment of the present invention provides a method and system for automatically identifying and handling reversing vehicles in an ETC lane, so as to eliminate or improve one or more defects existing in the prior art.

[0007] One aspect of the present invention provides a method for automatically identifying and handling reversing vehicles in an ETC lane, and uses the vehicle queue stored in the system to synchronize the queue order of vehicles on a real ETC lane. The method includes: receiving a vehicle inspection signal from a vehicle detector, detecting a reversing vehicle based on the timing of changes in the vehicle inspection signal of whether there is a vehicle or not, and automatically identifying the reversing vehicle using the ETC system; for the automatically identified reversing vehicle, reading the transaction status of the automatically identified reversing vehicle, and modifying the vehicle queue according to preset process rules for reversing vehicles with different transaction statuses; wherein the transaction status includes transaction success, transaction failure, and no transaction tag.

[0008] In some embodiments of the present invention, the vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector; the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

[0009] In some embodiments of the present invention, the step of detecting a reversing vehicle based on the timing of changes in vehicle detection signals including: determining whether a vehicle is reversing based on the timing of changes in vehicle detection signals and vehicle absence signals detected by the first vehicle detector and the second vehicle detector.

[0010] In some embodiments of the present invention, for reversing vehicles whose transactions fail, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses includes: when it is identified that the vehicle is reversing, starting a countdown of a preset duration, using a roadside unit based on phased array antennas and multi-beam intelligent control to locate the on-board unit loaded on the reversing vehicle in real time, and judging whether the vehicle status is leaving the ETC lane based on the coordinates of the located reversing vehicle according to preset rules, and when the countdown ends, deleting the corresponding reversing vehicle from the vehicle queue.

[0011] In some embodiments of the present invention, for reversing vehicles whose transactions have failed, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses also includes: when the countdown has not ended and the vehicle status of the reversing vehicle is that it has not left the ETC lane, resetting the countdown and restarting the countdown; for reversing vehicles without transaction tags, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses also includes: when it is detected that the vehicle behind the reversing vehicle in the vehicle queue approaches the first vehicle detector, the reversing vehicle is automatically deleted.

[0012] In some embodiments of the present invention, for reversing vehicles with successful transactions, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses includes: sending a signal notification to the remote duty platform to remind the toll collector to intervene manually, so as to enable manual intervention to modify the vehicle queue.

[0013] In some embodiments of the present invention, the method also includes: receiving license plate information of vehicles in each ETC lane collected and identified by the license plate recognition device at the same time, and correcting the vehicle queue corresponding to each ETC lane based on the identified license plate information of the vehicles in each ETC lane.

[0014] Another aspect of the present invention provides an automatic identification and handling system for reversing vehicles in an ETC lane, the system comprising an ETC lane operation control unit, the ETC lane operation control unit comprising a processor, a memory and a computer program / instructions stored in the memory, the processor being used to execute the computer program / instructions, and when the computer program / instructions are executed, the system implements the steps of the method described in any one of the above embodiments.

[0015] In some embodiments of the present invention, the system also includes: a vehicle identification device, used to identify the license plate information of vehicles within a preset range in the ETC lane, and upload the license plate information to the ETC lane operation and control unit; a roadside unit, used to collect vehicle OBU information of vehicles within a preset range in the ETC lane, and upload the vehicle OBU information to the ETC lane operation and control unit; a vehicle detector, used to detect reversing vehicles by timing changes in vehicle presence and absence signal inspections.

[0016] In some embodiments of the present invention, the vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector; the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

[0017] The automatic identification and handling method and system for reversing vehicles in the ETC lane proposed by the present invention can detect reversing vehicles using a vehicle detector, automatically identify the identity of the reversing vehicle using the ETC system, creatively process them separately in combination with the transaction status, and modify the vehicle queue so that the vehicle queue stored in the system synchronizes the queue order of the vehicles on the real ETC lane. This method can accurately locate the reversing vehicles in the ETC lane and automatically process and correct the vehicle queue. It effectively improves the passing efficiency of the ETC lane on the highway and avoids lane congestion.

[0018] Additional advantages, purposes, and features of the present invention will be described in part in the following description, and will become apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically indicated in the specification and the accompanying drawings.

[0019] Those skilled in the art will appreciate that the objectives and advantages that can be achieved with the present invention are not limited to the above specific description, and the above and other objectives that can be achieved by the present invention will be more clearly understood from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0021] Figure 1 The present invention is a flow chart of a method for automatically identifying and handling a vehicle reversing in an ETC lane in some embodiments of the present invention.

[0022] Figure 2 This is a schematic diagram of the ETC lane layout structure in the prior art.

[0023] Figure 3 It is a schematic diagram of the reversing range area that triggers only vehicle inspection 1 or vehicle inspection 2.

[0024] Figure 4 This is a flowchart of business processing after being triggered by different vehicle inspection signals in one embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of a situation in which the vehicle is completely driven in and then completely dumped out in one embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of an incomplete pouring after a complete entry in one embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the pouring-out situation after driving in one embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of a situation in which the vehicle is completely dumped out after being partially driven in according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0030] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0031] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0032] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection with an intermediate.

[0033] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0034] Figure 2 The schematic diagram of the ETC lane layout structure in the prior art shows a typical ETC lane layout with a rear-mounted highway barrier. When a vehicle enters the lane, the on-board unit on the vehicle first communicates with the roadside unit to complete the transaction, and then the vehicle triggers vehicle inspection 1 and vehicle inspection 2 in sequence, and the background determines whether the vehicle has entered. The background controls the information display screen according to the transaction results to display the vehicle traffic information, and controls the barrier according to the transaction result of the first vehicle in the vehicle queue. If the transaction is successful, the barrier is lifted, and the vehicle triggers vehicle inspection 3. The background determines that the vehicle has left based on the signal reported by vehicle inspection 3. Then, according to the transaction result of the next vehicle, the barrier control and information display are performed. If the vehicle transaction fails, or a non-ETC vehicle mistakenly enters the ETC lane, if conditions permit, the vehicle may reverse, change to other lanes, or retry and enter again.

[0035] Figure 3 This is a schematic diagram of the reversing range area that triggers only vehicle inspection 1 or vehicle inspection 2. Figure 2 Based on the above, a schematic diagram is given of the reversing range that triggers only vehicle inspection 1 and the reversing range that triggers only vehicle inspection 2. This diagram is for illustration only, and the proportion of the reversing range is for reference only.

[0036] However, the existing automatic vehicle backing identification and processing method based on the existing ETC lane layout structure, that is, the existing technology, has the following specific problems: (1) It is impossible to detect that the vehicle is moving forward and only triggers the first vehicle inspection (i.e. Figure 2(2) After the vehicle enters the lane, the vehicle cannot be detected and the reversing only triggers the second vehicle inspection (i.e. Figure 2 (3) The existing technology uses the method of directly deleting the backed-out vehicle from the vehicle queue, but since it cannot determine whether the vehicle has actually left, if the vehicle enters again, the vehicle queue stored in the system will not match the vehicle queue on the actual lane; (4) The existing technology does not perform different logical processing for different vehicle transaction states, which is easy to cause queue errors. In layman's terms, in some cases, the vehicle may just reverse after the transaction fails, but it has not actually left. However, if it is deleted in the system, the record in the vehicle queue data structure will not match the actual situation in the lane.

[0037] In view of the shortcomings of the existing technology, this method proposes an automatic identification and handling method and system for reversing vehicles in the ETC lane, which can more accurately locate the reversing vehicles and accurately maintain the system vehicle queue, especially when there are multiple vehicles in the queue, accurately delete or retain the reversing vehicles.

[0038] To this end, the present invention proposes an automatic identification and handling method for vehicles reversing in an ETC lane. Figure 1 The flowchart of the automatic identification and handling method of the ETC lane vehicle reversing in some embodiments of the present invention is shown. The method uses the vehicle queue stored in the system to synchronize the queue order of the vehicles on the real ETC lane, and takes each vehicle on the ETC lane (which can be identified by its license plate) as a node of the vehicle queue. The method includes the following steps:

[0039] Step S110: receiving the vehicle inspection signal from the vehicle inspection device, detecting the reversing vehicle based on the timing of the vehicle inspection signal change, and automatically identifying the reversing vehicle using the ETC system.

[0040] The types of the vehicle detector include but are not limited to a variety of vehicle detection coils, laser vehicle detectors and grating vehicle detectors.

[0041] In the specific implementation process, the execution subject of the method can be an ETC lane operation control unit. Generally, the ETC lane operation control unit in the ETC system is an industrial computer, which can transmit signals with the roadside unit, vehicle identification equipment, information display screen, vehicle inspection device and lane controller. The industrial computer analyzes the signals collected by various equipment to analyze the actual situation of vehicles in the ETC lane.

[0042] Step S120: For the automatically identified reversing vehicle, read the transaction status of the automatically identified reversing vehicle, and modify the vehicle queue according to preset process rules for reversing vehicles with different transaction statuses; wherein the transaction status includes transaction success, transaction failure and no transaction tag.

[0043] In the specific implementation process, since vehicles without transaction tags cannot pass through the ETC lane, generally speaking, vehicles will not return after leaving. For vehicles with successful transactions, reversing is relatively rare. Vehicles with failed transactions are more likely to be confused. Since there is a high probability that they will return to the original lane, a countdown mechanism can be entered to provide a buffer for deleting the vehicle from the vehicle queue stored in the system.

[0044] The automatic identification and handling method for reversing vehicles in the ETC lane proposed by the present invention can detect reversing vehicles using a vehicle detector, automatically identify the identity of the reversing vehicle using the ETC system, creatively process them separately in combination with the transaction status, and modify the vehicle queue so that the vehicle queue stored in the system synchronizes the queue order of the vehicles on the real ETC lane. This method can accurately locate the reversing vehicles in the ETC lane and automatically process and correct the vehicle queue. It effectively improves the passing efficiency of the ETC lane on the highway and avoids lane congestion.

[0045] In some embodiments of the present invention, the vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector (i.e., an area within a certain range facing the roadside unit); the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

[0046] Furthermore, in some embodiments of the present invention, the vehicle detector further includes a third vehicle detector, and the third vehicle detector is located behind the guardrail of the ETC lane and can be used to determine whether the vehicle has left.

[0047] During the specific implementation process, when the first vehicle detector and the second vehicle detector both detect vehicle presence signals, they can infer whether the vehicle is moving forward or reverse based on the signal change timing of the first vehicle detector and the second vehicle detector, and generate forward signals and reverse signals to the ETC lane operation control unit respectively. When the vehicle is moving forward, the ETC system can process it normally. When the vehicle is reversing, it needs to enter the reversing processing procedure.

[0048] In some other embodiments of the present invention, when a vehicle is in an ETC lane, the change sequence of the vehicle inspection signal may be as follows: (1) Normal entry: Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 1 has no vehicle - Vehicle inspection 2 has no vehicle. (2) Normal reversing: Vehicle inspection 2 has a vehicle - Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has no vehicle - Vehicle inspection 1 has no vehicle. (3) Completely reversing after fully entering: Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 1 has no vehicle - Vehicle inspection 2 has no vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has no vehicle - Vehicle inspection 1 has no vehicle. (4) Reversing after fully entering, triggering vehicle inspection 2, continuing to move forward and leaving vehicle inspection 2: Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 1 has no vehicle - Vehicle inspection 2 has no vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 2 has no vehicle. (5) Reversing after entering: Vehicle inspection 1 has a vehicle - Vehicle inspection 2 has a vehicle - Vehicle inspection 2 has no vehicle - Vehicle inspection 1 has no vehicle. (6) Only vehicle inspection 1 is triggered, and then the vehicle backs out and leaves vehicle inspection 1: vehicle inspection 1 has a vehicle - vehicle inspection 1 does not have a vehicle. Whether the vehicle backs up can be detected based on the changes in the vehicle inspection signal as above.

[0049] By adopting this embodiment of the invention, the movement state of the vehicle can be detected and identified by combining two coils, and a processing mechanism for detecting a reversing vehicle when only a single coil detects a signal change is added on the basis of the existing technology.

[0050] In some embodiments of the present invention, the step of automatically identifying a reversing vehicle using the ETC system in step S110 includes: (1) receiving vehicle OBU information collected by a roadside unit from an on-board unit OBU installed on the vehicle, and automatically identifying the identity of the reversing vehicle based on the changing timing of vehicle signals and vehicle absence signals detected by the first vehicle detector and the second vehicle detector; or (2) receiving license plate information uploaded by a license plate recognition device included in the ETC system, and automatically identifying the identity of the reversing vehicle in combination with the detection results of the first vehicle detector and the second vehicle detector.

[0051] In a specific implementation process, the identified vehicles may be added to the vehicle queue, each vehicle may be used as a node in the vehicle queue, and the license plate number may be used as a vehicle identification.

[0052] Furthermore, in another embodiment of the present invention, a reversing vehicle can be identified based on the following principles: (1) The vehicle presence signal of the vehicle inspection must be triggered by the vehicle closest to the vehicle inspection. (2) The vehicle presence signal of the vehicle inspection must be triggered by the vehicle before the vehicle inspection moving forward, or by the vehicle after the vehicle inspection reversing. (3) The vehicle absence signal of the vehicle inspection must be triggered by the vehicle that triggered the vehicle inspection.

[0053] In a specific embodiment of the present invention: the identification process of a reversing vehicle includes: (1) After the roadside unit reports the vehicle OBU information, a vehicle is created and added to the end of the queue. (2) For each vehicle inspection signal reported, a vehicle that may trigger the vehicle inspection signal is searched from the vehicle queue. (3) If a vehicle is found, the signal is matched with the vehicle; if multiple vehicles are found, the signal is matched with the most likely vehicle. (4) Based on the signal reporting order, it is determined whether it matches the above-mentioned reversing vehicle inspection signal order, which specific vehicle is reversing, and the identity information (license plate number, etc.) of the reversing vehicle is identified.

[0054] Figure 4 The flowchart of the business processing after different vehicle inspection signals are triggered in one embodiment of the present invention. The processing flow of the method includes: (1) When the forward signal of the vehicle is detected, the forward signal is matched with the queue vehicle, and the normal processing flow is entered. (2) When the vehicle inspection 1 signal is detected, the vehicle inspection 1 signal is matched with the queue vehicle, and the ETC system is combined to identify whether the vehicle is reversing. If so, the reversing processing flow is entered, otherwise the normal processing flow is maintained. (3) When the reversing signal is detected, the reversed vehicle is marked (and the countdown is started), and the reversing processing flow is entered. (4) When the vehicle inspection 2 signal is detected, the vehicle inspection 2 signal is matched with the queue vehicle, and the ETC system is combined to identify whether the vehicle is reversing. If so, the reversing processing flow is entered, otherwise the normal processing flow is maintained. Among them, the normal processing flow belongs to the prior art and will not be repeated here.

[0055] By adopting this embodiment of the invention, the roadside unit RSU or license plate recognition device of the ETC system can be used to identify the identity information of the vehicle, thereby synchronizing the order and status of the vehicles in the ETC lane in the vehicle queue stored in the system.

[0056] In some embodiments of the present invention, for reversing vehicles whose transactions fail, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses includes: when it is identified that the vehicle is reversing, starting a countdown of a preset duration, using a roadside unit based on phased array antennas and multi-beam intelligent control to locate the on-board unit loaded on the reversing vehicle in real time, and judging whether the vehicle status is leaving the ETC lane based on the coordinates of the located reversing vehicle according to preset rules, and when the countdown ends, deleting the corresponding reversing vehicle from the vehicle queue.

[0057] Among them, the preset rules for determining whether a vehicle leaves the ETC lane in the above embodiment can be that it leaves when it exceeds a certain distance, for example, the OBU is beyond the range of 8m from the RSU, or it can be that the RSU is deemed to have left when it cannot detect the OBU.

[0058] In addition, when the vehicle enters the detection range of the RSU again, the vehicle needs to be added to the vehicle queue stored in the system again.

[0059] By adopting this embodiment of the invention, a countdown mechanism can be introduced to delete the reversing vehicle from the queue at the end of the countdown, thereby achieving complete synchronization between the vehicle queue and the queue order of real vehicles in the ETC lane.

[0060] In some embodiments of the present invention, for reversing vehicles whose transactions have failed, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction states also includes: when the countdown has not ended and the vehicle status of the reversing vehicle is that it has not left the ETC lane, resetting the countdown and restarting the timing. In layman's terms, for vehicles whose ETC transactions have failed, a certain amount of room for fault tolerance can be given, because the vehicle may exit and then re-enter. If it is deleted in advance, the actual situation in the lane will be inconsistent with the situation in the data structure of the vehicle queue, causing hidden dangers. Since it will be deleted after the countdown ends, it is necessary to detect the vehicle status of the reversing vehicle before the countdown ends to determine whether the vehicle is still staying in the ETC lane. If the vehicle has not left, it is likely that the vehicle is ready to try again after the transaction fails, so the countdown needs to be reset to ensure that the record of the vehicle queue is consistent with the actual situation of the ETC lane.

[0061] In some embodiments of the present invention, for reversing vehicles without transaction tags, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction states also includes: when it is detected that the vehicle behind the reversing vehicle in the vehicle queue approaches the first vehicle detector, the reversing vehicle is automatically deleted. In layman's terms, for reversing vehicles that cannot conduct ETC transactions, if it is detected that the vehicle behind the reversing vehicle has come over, it can be reasonably inferred that the reversing vehicle has left. At this time, there is no need to wait for the countdown to end, and the reversing vehicle can be directly deleted.

[0062] It should be noted that the layout of ETC lanes requires attention to the following elements: (1) In general, the roadside unit scanning area is located 8 to 10 meters in front of vehicle inspection 1 (normally accommodating two vehicles). (2) The width of vehicle inspection 1 and vehicle inspection 2, as well as the distance between vehicle inspection 1 and vehicle inspection 2, should be reasonable to distinguish vehicles entering and reversing. (3) The license plate recognition device scanning area is located behind vehicle inspection 2 and in front of the barrier (some lanes can add a license plate recognition device at vehicle inspection 1).

[0063] It should be noted that the detection range of OBU does not cover the entire ETC lane, so it can only detect that the vehicle has left the detection range, but it does not know whether the vehicle has actually left. This is why a countdown mechanism needs to be introduced.

[0064] By adopting the embodiment of the invention, a separate processing mechanism for vehicles with failed ETC transactions is added, thereby improving the fault tolerance rate for reversing vehicles with failed ETC transactions. Accordingly, for reversing vehicles without transaction tags, a more direct deletion method is adopted because they are destined to be unable to pass through the ETC lane. A more humane, reasonable and practical processing strategy is adopted for different situations.

[0065] In some embodiments of the present invention, for reversing vehicles with successful transactions, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction statuses includes: sending a signal notification to the remote duty platform to remind the toll collector to intervene manually, so as to enable manual intervention to modify the vehicle queue.

[0066] By adopting the embodiment of the invention, in the rare but possible situation where a vehicle reverses after a successful transaction, the remote duty platform can be contacted for manual intervention, thereby ensuring the ability to respond to a variety of situations to achieve more accurate and efficient processing of reversing vehicles in the ETC lane.

[0067] In some other embodiments of the present invention, the transaction status of vehicles is divided into three types in combination with the processing of reversing vehicles with transaction status: ① successful transaction; ② failed transaction; ③ no transaction tag. Among them, vehicles with transaction status of failed transaction refer to ETC vehicles with OBU installed, but the transaction failed due to various reasons. Vehicles with transaction status of no transaction tag refer to vehicles that cannot be identified in the ETC toll collection system of the highway. The processing methods for the reversing situations of vehicles with three different transaction statuses are as follows: (1) Reversing of vehicles with transaction status of successful transaction. In actual traffic, this situation is rare. After the vehicle reverses, the countdown begins to prepare for deletion from the queue. However, it should be noted that when it is determined that the vehicle with transaction status of successful transaction reverses and the vehicle is the first vehicle in the queue, it is likely that the vehicle inspection device signal jumps false alarm. The toll collector should be reminded through the remote duty platform to pay attention, and the vehicle should not be deleted directly. (2) Reversing of vehicles with transaction status of failed transaction. After the vehicle with failed transaction reverses, the countdown begins to prepare for deletion from the queue. However, the vehicle with failed transaction carries the on-board unit OBU and generally tries again. Since the vehicle enters the RSU scanning area again, the RSU will report the OBU information of the vehicle again, including the lateral and longitudinal coordinates of the OBU relative to the RSU. Figure 2The x and y coordinates in the table. Based on the coordinate information, it can be determined whether the vehicle is still at the entrance of the lane. In addition, each time the OBU information of the vehicle is received, the countdown is reset and restarted. If no OBU information is received for a period of time, it proves that the vehicle has left and is automatically deleted at the end of the countdown. Before the countdown for the backed-out vehicle is over, if the OBU information of the rear vehicle is received and it is determined based on the OBU coordinates that the rear vehicle is close to vehicle inspection 1, the backed-out vehicle is automatically deleted. (3) Vehicles with a transaction status of no transaction tag (also known as non-ETC vehicles) are backing up. After the vehicle without a transaction tag is backed out, the countdown begins and it is prepared to be deleted from the queue. Before the countdown for the backed-out vehicle is over, if the OBU information of the rear vehicle is received and it is determined based on the OBU coordinates that the rear vehicle is close to vehicle inspection 1, the backed-out vehicle is automatically deleted.

[0068] In some embodiments of the present invention, the method also includes: receiving license plate information of vehicles in each ETC lane collected and identified by the license plate recognition device at the same time, and correcting the vehicle queue corresponding to each ETC lane based on the identified license plate information of the vehicles in each ETC lane.

[0069] In the specific implementation process, if a vehicle is identified as entering another lane, the vehicle in the deletion countdown state in the vehicle queue can be deleted in advance and the countdown can be ended. Similarly, for a reversing vehicle that re-enters the original ETC lane, it can also be re-added to the vehicle queue through the license plate recognition results. Specifically, the sharing of license plate recognition between lanes can be achieved by each lane reporting the identified license plates to the industrial computer, and the industrial computer compares the license plates of each lane, thereby updating the vehicle queue of the lane in time (data synchronization of RSU devices between different lanes is established at the level of the industrial computer).

[0070] By adopting the embodiment of the invention, by introducing a license plate information synchronization mechanism for multiple ETC lanes, the license plates of vehicles identified in different lanes are compared in real time, and it is possible to determine whether a vehicle has reversed out of the original lane before the countdown ends, thereby modifying the vehicle queue stored in the system more quickly and ending the countdown. The introduction of this method can achieve faster synchronization of the vehicle queue with the actual vehicle order in the ETC lane.

[0071] In some other embodiments of the present invention, on the basis of the countdown mechanism, a correction mechanism and auxiliary means for the vehicle queue are introduced. The reason is that the above processing relies on the countdown. If the countdown setting is unreasonable, it may cause the queue to be inconsistent with the actual situation. Therefore, it is necessary to combine other auxiliary means to correct the queue. The auxiliary means include but are not limited to: (1) If the above countdown is set too long, it may lead to the misjudgment that the backed-out vehicle has re-entered the lane, while the backed-out vehicle has actually changed lanes. The vehicle queue in this lane can also be corrected and deleted based on the sharing of license plate recognition between lanes; (2) If the above countdown is set too short, it may lead to the misjudgment that the backed-out vehicle has left, while it has actually re-entered the lane, the backed-out vehicle can be reported through the license plate recognition of the lane to add the backed-out vehicle to the queue again.

[0072] By adopting this embodiment of the invention, it is possible to achieve faster synchronization of vehicle queues with the order of vehicles in the actual ETC lane.

[0073] Correspondingly, another aspect of the present invention also provides an automatic identification and handling system for reversing vehicles in an ETC lane, the system comprising an ETC lane operation control unit, the ETC lane operation control unit comprising a processor, a memory and a computer program / instructions stored in the memory, the processor being used to execute the computer program / instructions, and when the computer program / instructions are executed, the system implements the steps of the method described in any one of the above embodiments.

[0074] In some embodiments of the present invention, the system also includes: (1) a vehicle identification device, used to identify the license plate information of vehicles within a preset range in the ETC lane, and upload the license plate information to the ETC lane operation and control unit; (2) a roadside unit, used to collect vehicle OBU information of vehicles within a preset range in the ETC lane, and upload the vehicle OBU information to the ETC lane operation and control unit; (3) a vehicle detector, used to detect reversing vehicles based on the timing of changes in vehicle detection signals of vehicle presence or absence.

[0075] Furthermore, the system may also include: (4) a lane controller for controlling the lifting of the barrier. (5) an information display screen: used to provide text reports on different situations in the ETC lane, such as displaying the ETC transaction status and the corresponding vehicle license plate number.

[0076] In some embodiments of the present invention, the vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector; the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

[0077] Figure 5-Figure 8 The signal changes of vehicle inspection 1 and vehicle inspection 2 under different reversing situations are explained as follows:

[0078] (1) Drive in completely and then empty out completely.

[0079] Figure 5 This is a schematic diagram of a situation in which the vehicle is completely driven in and then completely dumped out in one embodiment of the present invention. The signal conversion process is as follows:

[0080] Vehicle inspection 1 has a vehicle - vehicle inspection 2 has a vehicle - vehicle inspection 1 has no vehicle - vehicle inspection 2 has no vehicle - vehicle inspection 2 has a vehicle - vehicle inspection 1 has a vehicle - vehicle inspection 2 has no vehicle - vehicle inspection 1 has no vehicle. The vehicle position change process is: ①→②→③→④.

[0081] (2) After fully entering the vehicle, reverse the vehicle to trigger Vehicle Inspection 2, and then continue forward to exit Vehicle Inspection 2.

[0082] Figure 6 This is a schematic diagram of the situation where the vehicle is not completely backed out after fully driving in an embodiment of the present invention. The signal transformation process is: vehicle inspection 1 has a vehicle - vehicle inspection 2 has a vehicle - vehicle inspection 1 has no vehicle - vehicle inspection 2 has no vehicle - vehicle inspection 2 has a vehicle - vehicle inspection 2 has no vehicle. The vehicle position change process is: ①→②→③→④→⑤.

[0083] (3) Drive into the area and then reverse.

[0084] Figure 7 The figure is a schematic diagram of the situation of backing out after driving in one embodiment of the present invention. The signal transformation process is: vehicle inspection 1 has a vehicle - vehicle inspection 2 has a vehicle - vehicle inspection 2 has no vehicle - vehicle inspection 1 has no vehicle. The vehicle position change process is: ①→②→①.

[0085] (4) Only trigger vehicle inspection 1, then pour out and leave vehicle inspection 1.

[0086] Figure 8 This is a schematic diagram of the situation of completely backing out after incomplete entry in one embodiment of the present invention. The signal transformation process is: vehicle inspection 1 has a vehicle - vehicle inspection 1 does not have a vehicle. The vehicle position change process is: ①→②→①.

[0087] The automatic identification and handling method and system for reversing vehicles in the ETC lane proposed by the present invention can detect reversing vehicles using a vehicle detector, automatically identify the identity of the reversing vehicle using the ETC system, creatively process them separately in combination with the transaction status, and modify the vehicle queue so that the vehicle queue stored in the system synchronizes the queue order of the vehicles on the real ETC lane. This method can accurately locate the reversing vehicles in the ETC lane and automatically process and correct the vehicle queue. It effectively improves the passing efficiency of the ETC lane on the highway and avoids lane congestion.

[0088] The key points and advantages of the method proposed in the present invention also include but are not limited to:

[0089] (1) The dual-coil combination method can be used to detect and identify the vehicle's motion state, and a processing mechanism for detecting a reversing vehicle when only a single coil detects a signal change is added on the basis of the existing technology.

[0090] (2) Use the ETC system's roadside unit (RSU) or license plate recognition device to identify the vehicle's identity information, thereby synchronizing the order and status of vehicles in the ETC lane with the vehicle queue stored in the system.

[0091] (3) By introducing a countdown mechanism, the reversing vehicle is deleted from the queue at the end of the countdown, thereby achieving complete synchronization between the vehicle queue and the queue order of the real vehicles in the ETC lane.

[0092] (4) A separate processing mechanism for vehicles with failed ETC transactions has been added, which increases the fault tolerance for reversing vehicles with failed ETC transactions. Accordingly, a more direct deletion method is adopted for reversing vehicles without transaction tags, because they are destined to be unable to pass through the ETC lane. A more humane, reasonable, and practical processing strategy is adopted for different situations.

[0093] (5) In the rare but possible case of a vehicle reversing after a successful transaction, the remote duty platform is contacted for manual intervention, ensuring the ability to respond to a variety of situations and achieving more accurate and efficient processing of reversing vehicles in the ETC lane.

[0094] (6) Introducing a mechanism to synchronize the license plate information of multiple ETC lanes, by comparing the license plates of vehicles identified in different lanes in real time, it is determined whether a vehicle has reversed out of the original lane before the countdown ends, thereby modifying the vehicle queue stored in the system more quickly and ending the countdown. The introduction of this method can achieve faster synchronization of the vehicle queue with the actual vehicle order in the ETC lane.

[0095] The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the aforementioned edge computing server deployment method are implemented. The computer-readable storage medium can be a tangible storage medium, such as a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a floppy disk, a hard disk, a removable storage disk, a CD-ROM, or any other form of storage medium known in the technical field.

[0096] It should be understood by those skilled in the art that the exemplary components, systems and methods described in conjunction with the embodiments disclosed herein can be implemented in hardware, software or a combination of the two. Whether it is performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link via a data signal carried in a carrier.

[0097] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0098] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for automatically identifying and handling a vehicle reversing in an ETC lane, characterized in that: The method uses the vehicle queue stored in the system to synchronize the queue order of vehicles on the real ETC lane, and includes: Receive the vehicle inspection signal from the vehicle inspection device, detect the reversing vehicle based on the timing of the vehicle inspection signal change, and automatically identify the reversing vehicle using the ETC system; For automatically identified reversing vehicles, the transaction status of the automatically identified reversing vehicles is read, and the vehicle queue is modified according to preset process rules for reversing vehicles with different transaction statuses; wherein the transaction status includes transaction success, transaction failure and no transaction tag.

2. The method according to claim 1, characterized in that The vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector; the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

3. The method according to claim 2, characterized in that The step of detecting a reversing vehicle based on the timing of changes in vehicle presence and absence signals comprises: determining whether a vehicle is reversing based on the timing of changes in vehicle presence and absence signals detected by the first vehicle detector and the second vehicle detector.

4. The method according to claim 1, characterized in that For the reversing vehicles whose transactions have failed, the step of modifying the vehicle queue according to the preset process rules for the reversing vehicles in different transaction states includes: When a vehicle is identified to be reversing, a countdown of a preset duration is started. The on-board unit loaded on the reversing vehicle is located in real time using a roadside unit based on a phased array antenna and multi-beam intelligent control. The vehicle status is determined based on the coordinates of the located reversing vehicle according to preset rules to determine whether the vehicle is leaving the ETC lane. When the countdown ends, the corresponding reversing vehicle is deleted from the vehicle queue.

5. The method according to claim 4, characterized in that For the reversing vehicle whose transaction failed, the step of modifying the vehicle queue according to the preset process rules for the reversing vehicles in different transaction states further includes: when the countdown has not ended and the vehicle state of the reversing vehicle is that it has not left the ETC lane, resetting the countdown and restarting the countdown; For reversing vehicles without transaction tags, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction states also includes: when it is detected that a vehicle behind the reversing vehicle in the vehicle queue approaches the first vehicle detector, the reversing vehicle is automatically deleted.

6. The method according to claim 1, characterized in that For reversing vehicles with successful transactions, the step of modifying the vehicle queue according to preset process rules for reversing vehicles in different transaction states includes: sending a signal notification to the remote duty platform to remind the toll collector to intervene manually, so as to enable manual intervention to modify the vehicle queue.

7. The method according to claim 1, characterized in that The method further comprises: The license plate information of the vehicles in each ETC lane collected and recognized by the license plate recognition device at the same time is received, and the vehicle queue corresponding to each ETC lane is corrected based on the recognized license plate information of the vehicles in each ETC lane.

8. An automatic identification and handling system for vehicles reversing in an ETC lane, characterized in that: The system comprises an ETC lane operation control unit, which comprises a processor, a memory and a computer program / instruction stored in the memory, wherein the processor is used to execute the computer program / instruction, and when the computer program / instruction is executed, the system implements the steps of the method as described in any one of claims 1 to 7.

9. The system according to claim 8, characterized in that The system also includes: A vehicle identification device, used to identify the license plate information of vehicles within a preset range in the ETC lane, and upload the license plate information to the ETC lane operation control unit; A roadside unit, used to collect vehicle OBU information of vehicles within a preset range in the ETC lane, and upload the vehicle OBU information to the ETC lane operation control unit; The vehicle detector is used to detect reversing vehicles based on the timing of changes in vehicle detection signals.

10. The system according to claim 9, characterized in that The vehicle detector includes a first vehicle detector and a second vehicle detector. Along the direction of vehicle travel, the first vehicle detector is located in front of the roadside unit of the ETC system, and the second vehicle detector is located behind the roadside unit of the ETC system. The scanning area of ​​the roadside unit is located within a preset distance range behind the first vehicle detector; the vehicle detection signal includes a vehicle presence signal and a vehicle absence signal.

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