Vehicle access informatization management method and system

Abstract

The invention relates to the technical field of new-generation information, and discloses a vehicle access informatization management method and system, so as to improve the performance. The method comprises the following steps that: an edge server creates a barrier gate group A, sets a uniform safety interval threshold value between any two exit barrier gates in the group, and then establishes a jurisdiction relationship between the barrier gate group A and at least two exit barrier gates converged into a confluence road section; wherein the barrier gate group to which any exit barrier gate is attached is unique, and the adjacent exit barrier gates of which the constraint line distance is smaller than a safety threshold and the sight line is impaired are included in the same barrier gate group; the method comprises the following steps of: after receiving a gate opening request facing a gate a1 in a gate closing state in a gate group A, judging whether conflicting lateral coming vehicles exist at lateral exits where other gates in the group are positioned or not; and delay waiting processing is executed on the exit barrier gate which is opened backwards, so that the time interval between a gate opening instruction issued to the exit barrier gate which is opened backwards and a previous gate closing instruction of other exit barrier gates in the barrier gate group is larger than or equal to a safety interval threshold value.

Description

Technical Field

[0001] This invention relates to the field of next-generation information technology, and in particular to an information management method and system for vehicle access. Background Technology

[0002] Information management of vehicle access has been widely applied in various places such as schools, communities, and shopping malls.

[0003] Existing vehicle access information management systems often suffer from a trade-off between cost and performance. On the one hand, in high-performance scenarios, the system requires high-configuration server clusters and cloud storage space for data storage and collaboration to ensure full functionality. On the other hand, in most ordinary usage scenarios, property management companies, due to cost considerations, deploy relatively low-configuration hardware and software management resources. These low-configuration resources often have management loopholes, making it easy for behaviors such as fare evasion to occur. While such occasional misconduct was previously considered a low-probability event, in the current era of rapid dissemination of short videos, such misconduct can easily spread and inspire more imitations, thereby negatively impacting property management and social atmosphere.

[0004] Meanwhile, even high-end vehicle access information management systems mostly offer standard, fixed-function products that are largely separate from the environmental information in the deployment scenario. This poses potential safety hazards in some usage scenarios: when two independent vehicle entrances / exits are close together, some drivers who are tourists lack prior knowledge of the road conditions; on the other hand, even drivers familiar with the road conditions may become complacent in their judgment. The presence of existing buildings can obstruct the driver's view, especially in environments with roller shutter garage doors, which can easily lead to collisions between vehicles from two nearby entrances / exits during merging. Moreover, the probability and severity of such accidents are much higher at intersections of roads within the garage. This is because drivers at intersections of roads within the garage are equipped with resources such as chandeliers and wide-angle mirrors, allowing them to make clear judgments in advance and slow down and use their lights to warn others.

[0005] Therefore, given the varying configurations of vehicle access management software and hardware resources across different usage scenarios and the potential shared risks of separation from the environment, there is a need to develop technologies that can patch or repair existing vehicle access information resources at low cost and flexibly match them with environmental information. Summary of the Invention

[0006] The purpose of this invention is to disclose an information management method and system for vehicle access, in order to improve performance.

[0007] To achieve the above objectives, the vehicle access information management method disclosed in this invention includes: Step S1: The edge server creates a gate group A based on manual requests and sets a uniform safety interval threshold Δt between any two exit gates in the group. Then, based on the information input by the manual server, it establishes the jurisdiction relationship between gate group A and at least two exit gates that merge into the confluence section. Among them, any exit gate is attached to a unique gate group, and adjacent exit gates with constraint line distance less than the safety threshold and visual obstruction are included in the same gate group. Step S2: After receiving the opening request from the A-barrier group for the closed gate a1, the edge server records the timestamp of the opening request, and then determines whether the difference between the current time t1 and the most recent closing time t0 of other gates in the group is less than the safety interval threshold. If so, it waits until t0+Δt before proceeding to step S3; otherwise, it proceeds directly to step S3. Step S3: The edge server determines whether there are any waiting lateral vehicles in other gates within the current A gate group. If so, it determines the opening order of the conflicting exit gates in the group according to the timestamps of the recorded pending gate opening requests. Then, when issuing an opening command to the exit gate that opens first, it performs a delay waiting process on the exit gate that opens later so that the time interval between the opening command issued to the exit gate that opens later and the previous closing command of other exit gates in the gate group is greater than or equal to the safety interval threshold.

[0008] Preferably, the edge server determines whether there is a conflicting lateral approach vehicle at barrier a2 in barrier group A by including one or both of the following two dimensions: Dimension 1: A license plate recognition device with a camera monitors whether there are motor vehicles merging into the merging section at the lateral exit of the barrier gate a2; the exit industrial control computer establishes a communication connection with the license plate recognition device and the edge server, and the gate opening request corresponding to the motor vehicle is issued by the exit industrial control computer after verifying that the motor vehicle meets the release conditions; Dimension 2: The card reader deployed at the side exit where the gate a2 is located monitors whether there are non-motorized vehicles merging into the merging section; the non-motorized vehicles communicate with the card reader via radio frequency through magnetic identification cards; wherein, after the card reader recognizes the tag information of the magnetic identification card, it sends a gate opening request carrying a timestamp to the edge server.

[0009] Preferably, when both dimension one and dimension two exist simultaneously, the method further includes: If the edge server receives an opening request from the card reader or the exit control computer at the side exit where the barrier gate a2 is located after issuing an opening command to the barrier gate a2 and before issuing a closing command to the barrier gate a2 according to the timer, it will reset the timer that maintains the open state of the barrier gate a2 to the first countdown duration and start counting again, and then issue a closing command to the barrier gate a2 after the timer expires. If, before issuing an opening command to the barrier gate a2, the edge server receives at least two opening requests consisting of dimension one and dimension two from the lateral exit where the barrier gate a2 is located, the at least two opening requests are merged into a single opening request, and the timestamp saved is based on the earliest timestamp of the merged opening request. When issuing an opening command to the barrier gate a2, the timer duration is simultaneously set to twice the first duration.

[0010] Preferably, the method further includes: If, before issuing an opening command to the barrier gate a2, the edge server receives an opening request from the lateral exit where the barrier gate a2 is located consisting of only two dimensions two, the server merges the two opening requests into a single opening request and simultaneously sets the timer duration to the first duration when issuing the opening command to the barrier gate a2.

[0011] Preferably, the present invention further includes: The edge server instructs the interactive terminal at the exit where the gate is located to send a delay notification message via a display screen and / or voice module before the gate is opened to inform the user of the reason for the delay.

[0012] Preferably, the present invention further includes: The edge server uses the camera of the license plate recognition device to capture video images of motor vehicles after the exit gate is opened, and tracks the displacement trajectory of the license plate relative to the camera extracted from the video image. When the displacement trajectory indicates that the motor vehicle is driving in the wrong direction, the file name of the video image is renamed by combining the acquisition time and the identified license plate number, and then saved to an abnormal image library used to assess whether there is an intention to evade payment, in response to the user's retrieval request based on time period and / or license plate information.

[0013] Preferably, the present invention further includes: The edge server extracts at least two key frames from the video image traveling in the direction of departure. Then, it compares each key frame sequentially with image frames of the same vehicle captured at the entrance gate to confirm the license plate entry time. If the consistency comparison result of any key frame is greater than or equal to a set consistency threshold, the subsequent comparison is terminated and the video image is discarded. If the comparison results of all key frames are less than the consistency threshold, the file name of the video image is renamed by combining the capture time and the identified license plate number, and then saved to a Class II abnormal image library for assessing whether there is a potential hit-and-run incident in the garage, in response to user retrieval requests based on time period and / or license plate information.

[0014] Preferably, the vehicle body consistency comparison algorithm specifically includes: Identify and separate the vehicle body from the background; Anchor a set of reference frame points and a set of high-risk collision feature points from the vehicle body; Based on the alignment relationship of the reference frame points, estimate the geometric transformation relationship between the reference frame points in the key frame and the corresponding reference frame points in the inbound image frame. Then, based on the geometric transformation relationship, resample the entire vehicle image in the key frame to achieve a state of relative alignment in attitude and scale with the entire vehicle image in the inbound image frame. The grayscale jump values ​​of the line segment connecting two high-collision feature points are formed into a sequence between adjacent pixels; The similarity of the sequence formed by the gray-scale jump values ​​of the vehicle body images aligned between two image frames is compared one by one. If the similarity of the sequence formed by the gray-scale jump values ​​of any aligned line segment is less than the set consistency threshold, then the consistency comparison result of the current key frame is determined to be less than the set consistency threshold.

[0015] Preferably, the reference frame points include: the roof corner, the window frame corner, and the wheel hub center recess; the collision high-incidence feature points include: the headlight corner, the edge corner of the bumper, the bottom end of the side door waistline, and the front end of the door handle.

[0016] To achieve the above objectives, the present invention also discloses a vehicle access information management system, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described method.

[0017] The present invention has the following beneficial effects: 1. Most existing vehicle access information management platforms adopt a cloud-edge-device architecture. This invention mainly adds and optimizes control-level functions in the edge server, with minimal changes to the existing system. No additional hardware resources are required, and the added functions can be easily and widely applied to upgrade and transform existing vehicle access information management resources.

[0018] 2. The core of this invention lies in: an edge server creating a gate group A and setting a unified safety interval threshold between any two exit gates within the group, then establishing a management relationship between gate group A and at least two exit gates merging into the merging section; upon receiving an opening request from gate a1 in gate group A that is already closed, it determines whether there are conflicting lateral vehicles at the lateral exits of other gates within the group during the current and previous reasonable time periods. If so, it performs a delay waiting process on the gate that opened later in the conflict to ensure that the time interval between the opening command of any exit gate in the gate group and the previous closing command of other exit gates is greater than or equal to the safety interval threshold; thereby fundamentally avoiding the possibility of collisions between multiple vehicles from different directions during merging; the overall logic is rigorous and reliable, significantly improving overall performance compared to existing management systems. Moreover, the safety interval threshold can be flexibly and differentiated in different environments, offering high flexibility and facilitating implementation and promotion.

[0019] 3. This invention has excellent scalability, especially when motor vehicles and non-motor vehicles share an exit, it can significantly improve overall travel efficiency. For example, after receiving an opening request for gate a1 in gate group A that is already open, the current opening request for gate a1 can be merged with the previous opening request. By resetting the timer, it can ensure that the continuous opening requests for gate a1 within a short period of time are processed in a centralized manner before switching to the opening request processing of other gates, effectively reducing the number of back-and-forth switching between different gates, and also reducing the data processing pressure on the edge server.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the vehicle access information management method disclosed in the embodiments of the present invention.

[0022] Figure 2 This is a schematic diagram of the distribution of two adjacent exit gates that are included in the same gate group and are less than the safety threshold and have obstructed views, as disclosed in the embodiments of the present invention.

[0023] Figure 3 This is a logical flowchart of the consistency detection algorithm disclosed in the embodiments of the present invention. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] Example 1 This embodiment discloses an information management method for vehicle access, such as... Figure 1 As shown, it includes the following steps: Step S1: The edge server creates a gate group A based on manual requests and sets a uniform safety interval threshold Δt between any two exit gates within the group. Then, based on the information manually input, it establishes the jurisdiction relationship between gate group A and at least two exit gates of the merging section.

[0026] In this step, each exit barrier gate is attached to a unique barrier gate group; and refer to Figure 2 In this embodiment, adjacent exit gates with obstructed views and a distance less than a safety threshold (typically less than twice the length of a passenger car, usually unsupervised, or if present, monitored by a single staff member in the same security booth; the specific value can be set within the range of 5-10 meters) are grouped into the same gate group. Optionally, users can arrange one, two, or more gate groups depending on the specific environment of the implementation scenario; the safety interval threshold within each gate group can be individually assigned based on the actual experimental conditions. The processing logic within each gate group is the same. To avoid confusion between different gate groups, this embodiment only uses gate group A as an example, and will not elaborate further.

[0027] Step S2: After receiving the opening request from the A-barrier group for the closed gate a1, the edge server records the timestamp of the opening request, and then determines whether the difference between the current time t1 and the most recent closing time t0 of other gates in the group is less than the safety interval threshold. If yes, it waits until t0+Δt before proceeding to step S3; otherwise, it proceeds directly to step S3.

[0028] In this step, if an opening request is received from gate A (which is already open), the current opening request for gate a1 can be merged with the previous opening request. Referring to the handling method for gate a2 in Case 1 in Embodiment 2, the timer can be reset to ensure that consecutive opening requests for gate a1 within a short period are processed before switching to processing opening requests for other gates. Meanwhile, the "closing time" in this step refers to the time when the edge server issues the closing command, which will not be elaborated upon further.

[0029] Step S3: The edge server determines whether there are any waiting lateral vehicles in other gates within the current A gate group. If so, it determines the opening order of the conflicting exit gates in the group according to the timestamps of the recorded pending gate opening requests. Then, when issuing an opening command to the exit gate that opens first, it performs a delay waiting process on the exit gate that opens later so that the time interval between the opening command issued to the exit gate that opens later and the previous closing command of other exit gates in the gate group is greater than or equal to the safety interval threshold.

[0030] In this step, conversely, if it is determined that there are no waiting lateral vehicles at other gates in the current A gate group, the edge server directly issues an opening command to gate a1.

[0031] In this step, since other gates within the group may also have vehicles waiting to open, similar to gate a1, resource conflicts may arise. This embodiment handles conflicts based on the order of the timestamps of each gate opening request. When timestamps are inconsistent, a first-come, first-served approach is used. In rare cases, if the timestamps of two or more conflicting gate opening requests are the same, the opening order between the conflicting exit gates can be determined randomly. To accurately and reasonably determine the order of each gate within the group, the edge server configures a queue in the cache for each gate group. Then, the queue maintains the pending gate opening requests between different gates within the group in a first-in, first-out manner. The specific implementation is existing technology and will not be elaborated further.

[0032] Example 2 This embodiment, based on the above embodiments, considers the situation where motor vehicles and non-motor vehicles share the exit gate. Non-motor vehicles mainly include motorcycles, tricycles used for cleaning, etc.

[0033] In the scenario set in this embodiment, the edge server determines whether there is a conflicting lateral vehicle approaching from barrier a2 in barrier group A by including one or both of the following two judgment dimensions: Dimension 1: A license plate recognition device with a camera monitors whether there are motor vehicles merging into the merging section at the lateral exit of the barrier gate a2; the exit industrial control computer establishes a communication connection with the license plate recognition device and the edge server, and the gate opening request for the corresponding motor vehicle is issued by the exit industrial control computer after verifying that the motor vehicle meets the release conditions.

[0034] Among them, the export industrial control computer is the local brain of the lane (i.e., the end in the cloud-edge-end three-level architecture). It integrates management software to coordinate devices such as license plate recognition devices, supplementary lights, voice modules and displays to process local logic, including but not limited to the gate opening or closing commands issued by the transit edge server to the export gate.

[0035] Dimension 2: The card reader deployed at the side exit where the gate a2 is located monitors whether there are non-motorized vehicles merging into the merging section; the non-motorized vehicles communicate with the card reader via radio frequency through magnetic identification cards; wherein, after the card reader recognizes the tag information of the magnetic identification card, it sends a gate opening request carrying a timestamp to the edge server.

[0036] Non-motorized vehicles typically cannot be processed using existing license plate recognition devices due to issues such as the absence of license plates or significant differences in vehicle type between non-motorized vehicles and motorized vehicles, affecting the reliability of intelligent switching. Therefore, in most application scenarios, the card reader and the exit industrial control computer are two separate components. Furthermore, the card reader is usually added by the property management after the exit industrial control computer and license plate recognition device have been deployed, based on subsequent needs from the property owner. As a variation, the exit industrial control computer and card reader can be physically integrated, but their processing logic still needs to be distinguished according to the two dimensions mentioned above. Therefore, this variation still falls within the scope of protection of this invention and will not be elaborated further.

[0037] Furthermore, when both dimension one and dimension two exist simultaneously, the method further includes: Scenario 1: If the edge server receives an opening request from the card reader or the industrial control computer at the side exit where gate a2 is located after issuing an opening command to gate a2 and before issuing a closing command to gate a2 according to the timer, it will reset the timer maintaining the open state of gate a2 to the first countdown duration and then restart the countdown. After the timer expires, it will then issue a closing command to gate a2. Optionally, for roller shutter gates, the first duration can be set within a range of 5-10 seconds based on the configuration of most motors; for straight gates, the first duration can be reduced to 3-6 seconds.

[0038] Furthermore, in this embodiment, if the export industrial control computer supports analyzing the video captured by the license plate recognition camera to identify events such as whether a vehicle has completed passage (this can usually be achieved by extracting key frames of the video at intervals and comparing them with pre-calibrated static images when no vehicles are passing), then the information confirming that the vehicle has completed passage can be fed back to the edge server, so that the edge server can reset the timer to zero and issue a gate closing command before the timer countdown ends.

[0039] Scenario 2: If, before issuing an opening command to the barrier gate a2, the edge server receives at least two opening requests consisting of dimension one and dimension two from the lateral exit where the barrier gate a2 is located, the at least two opening requests are merged into a single opening request, and the saved timestamp is based on the earliest timestamp of the merged opening request. When issuing an opening command to the barrier gate a2, the timer duration is simultaneously set to twice the first duration.

[0040] In scenario two above, due to the limited field of view of the license plate recognition camera, the number of motor vehicles is actually only one, so the timer duration should not be too long. At the same time, to effectively avoid rear-end collisions or scrapes between motor vehicles and non-motor vehicles passing through the same exit gate due to congestion or rushing, the timer duration should not be the same as in scenario one. Therefore, doubling the timer countdown duration is a more reasonable strategy that reflects the actual situation. Moreover, even if the number of non-motor vehicles is relatively large, resulting in insufficient time for following vehicles to pass safely in scenario two, the system can automatically switch to scenario one to further extend the actual cumulative time of the exit gate during a single passage. In other words, the two scenarios complement each other and can be switched in an emergency, which unexpectedly improves the flexibility and compatibility with actual usage scenarios and the overall safety performance of the system.

[0041] Preferably, the method further includes: Scenario 3: If, before issuing the opening command to the barrier gate a2, the edge server receives an opening request from the lateral exit where the barrier gate a2 is located consisting of only two dimension two requests, then the edge server merges the two opening requests (those without dimension one opening requests) into a single opening request. When issuing the opening command to the barrier gate a2, the edge server simultaneously sets the timer duration to the first duration (wherein, the references and meanings of the timer and the first duration are the same as in the two cases above, and will not be elaborated further).

[0042] Obviously, the three scenarios described in this embodiment can significantly improve travel efficiency when motor vehicles and non-motor vehicles share an exit gate. Furthermore, to enhance user experience, the method in this embodiment can be further supplemented and optimized. For example, the edge server instructs the interactive terminal at the exit where the gate is located to send a delay notification via a display screen and / or voice module before the gate opens to inform the user of the reason for the delay.

[0043] Example 3 This embodiment expands upon the functionality of any of the above embodiments.

[0044] In this embodiment, the edge server uses the camera of the license plate recognition device to capture video images of motor vehicles after the exit gate is opened, and tracks the displacement trajectory of the license plate relative to the camera extracted from the video image. When the displacement trajectory indicates that the motor vehicle is driving in the wrong direction, the file name of the video image is renamed by combining the acquisition time and the identified license plate number, and then saved to an abnormal image library used to assess whether the driver intends to evade payment, in order to respond to the user's retrieval request based on time period and / or license plate information.

[0045] In contrast, most existing parking garage management systems, due to limited storage resources, typically do not save images or videos of vehicles leaving the garage. Images of vehicles entering the garage are usually limited to a single photo of the license plate to determine the start time for billing. Furthermore, existing parking garage management systems consider a vehicle with the currently captured license plate as having completed exit once the exit gate opens. However, if the vehicle is driving in the wrong direction, it will either be treated as entering the garage or classified as a negligible anomaly and allowed to exit directly upon subsequent attempts, resulting in unauthorized vehicle fare evasion.

[0046] In this embodiment, video images after the gate is opened can be collected for a preset duration. During normal exit, the displacement trajectory of the license plate relative to the camera extracted from multiple key frames shows a gradual change from far to near and then disappears (this pattern is also the translation pattern of the center coordinate point of the license plate in the same coordinate system aligned in each key frame). If the displacement trajectory of the license plate relative to the camera extracted from multiple key frames shows a change from far to near and then abruptly changes from near to far until it disappears, the direction of the vehicle leaving can be identified as reverse driving based on the displacement trajectory.

[0047] The above-mentioned processing based on this embodiment avoids massive storage on the one hand, and can also serve as evidence of disputes for managers to intervene in advance. Specific intervention methods include, but are not limited to, correcting exit records that contradict the facts, or marking relevant vehicles as abnormal vehicles and restricting their re-exit from the warehouse to on-site handling by on-duty personnel.

[0048] Preferably, the capture time in the renamed video is listed before the license plate number. This facilitates the chronological ordering of such videos during storage, allowing on-duty personnel to intervene sequentially. Furthermore, renaming the video by capture time effectively avoids interference caused by attribute changes during subsequent processing such as video movement or forwarding.

[0049] Furthermore, the method in this embodiment also includes: The edge server extracts at least two key frames from the video image traveling in the direction of departure. Then, it compares each key frame sequentially with image frames of the same vehicle captured at the entrance gate to confirm the license plate entry time. If the consistency comparison result of any key frame is greater than or equal to a set consistency threshold, the subsequent comparison is terminated and the video image is discarded. If the comparison results of all key frames are less than the consistency threshold, the file name of the video image is renamed by combining the capture time and the identified license plate number, and then saved to a Class II abnormal image library for assessing whether there is a potential hit-and-run incident in the garage, in response to user retrieval requests based on time period and / or license plate information.

[0050] Similarly, in contrast, existing garage management systems do not have similar functions, and the few existing technologies that involve consistency checks are usually limited to determining whether a vehicle is using a fake license plate; therefore, they are irrelevant to the purpose of this embodiment, which is to assess whether there is a potential traffic accident in the garage.

[0051] Preferably, such as Figure 3 As shown, the vehicle body consistency comparison algorithm specifically includes: Step S51: Identify and separate the vehicle body from the background.

[0052] Step S52: Anchor a set of reference frame points and a set of collision-prone feature points from the vehicle body.

[0053] The so-called "reference frame point" and "collision high-incidence feature point" are both a set of predefined key parts that are stable on most vehicles and easy to identify in images. The "reference frame point" is usually a reference point that is not easily damaged, while the so-called "collision high-incidence feature point" refers to a reference point whose connecting area with similar points is easily damaged.

[0054] Optionally, the reference frame points include, but are not limited to: roof corners, window frame corners, and wheel hub center recesses; the collision-prone feature points include, but are not limited to: front headlight corners, bumper edge corners, bottom endpoints of side door waistlines, and front endpoints of door handles.

[0055] Step S53: Based on the alignment relationship of the reference frame points, estimate the geometric transformation relationship between the reference frame points in the key frame and the corresponding reference frame points in the inbound image frame. Then, based on the geometric transformation relationship, resample the entire vehicle image in the key frame to achieve a state of relative alignment in attitude and scale with the entire vehicle image in the inbound image frame.

[0056] Step S54: Form a sequence of grayscale jump values ​​between adjacent pixels for the line segments connecting two high-collision feature points.

[0057] Step S55: Compare the approximation of the sequence formed by the grayscale jump values ​​of each aligned line segment of the vehicle body image between the two image frames one by one. If the approximation of the sequence formed by any aligned line segment based on the grayscale jump value is less than the set consistency threshold, then the consistency comparison result of the current keyframe is determined to be less than the set consistency threshold. Conversely, if the approximation of the sequence formed by all aligned line segments based on the grayscale jump values ​​is greater than or equal to the set consistency threshold, then the consistency comparison result of the current keyframe is determined to be greater than or equal to the set consistency threshold.

[0058] Optionally, the specific index for calculating the approximation can be the Pearson correlation coefficient, and the corresponding consistency threshold can be calibrated based on empirical values.

[0059] Based on the above consistency detection algorithm, the processing focuses on the approximation calculation between the alignment and connection of high-collision feature points, which can ensure the accuracy and real-time performance of the processing results.

[0060] Based on the above-described assessment of potential traffic accidents within the garage in this embodiment, suspicious vehicles and their documentation can be automatically filtered out for focused attention by officers. When conditions permit, officers can access video data recorded by other cameras within the garage during verification to trace the suspicious vehicle's trajectory. Thus, this embodiment: on the one hand, improves the work efficiency of officers, thereby reducing the configuration costs of officers and video storage resources; on the other hand, it also extends the utilization value of the stored video.

[0061] Example 4 This embodiment discloses a vehicle access information management system, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the methods corresponding to Embodiments 1 to 3 above.

[0062] In summary, the vehicle access information management method and system disclosed in the above four embodiments of the present invention have at least the following beneficial effects: 1. Most existing vehicle access information management platforms adopt a cloud-edge-device architecture. This invention mainly adds and optimizes control-level functions in the edge server, with minimal changes to the existing system. No additional hardware resources are required, and the added functions can be easily and widely applied to upgrade and transform existing vehicle access information management resources.

[0063] 2. The core of this invention lies in: an edge server creating a gate group A and setting a unified safety interval threshold between any two exit gates within the group, then establishing a management relationship between gate group A and at least two exit gates merging into the merging section; upon receiving an opening request from gate a1 in gate group A that is already closed, it determines whether there are conflicting lateral vehicles at the lateral exits of other gates within the group during the current and previous reasonable time periods. If so, it performs a delay waiting process on the gate that opened later in the conflict to ensure that the time interval between the opening command of any exit gate in the gate group and the previous closing command of other exit gates is greater than or equal to the safety interval threshold; thereby fundamentally avoiding the possibility of collisions between multiple vehicles from different directions during merging; the overall logic is rigorous and reliable, significantly improving overall performance compared to existing management systems. Moreover, the safety interval threshold can be flexibly and differentiated in different environments, offering high flexibility and facilitating implementation and promotion.

[0064] In contrast, if the safety interval is set as the interval between two opening commands corresponding to different gates within a gate group, it cannot be compatible with the merging of multiple opening requests in non-motorized vehicle mixed lanes, leading to frequent switching between different gates and affecting traffic efficiency. Conversely, if multiple opening requests are still merged in such scenarios, there is a loophole that the closing time of the first opening exit gate cannot be predicted, which could easily cause the actual time interval between vehicles merging from different directions within the gate group to be less than the safety interval threshold, making collisions inevitable. Therefore, this invention constrains the safety interval threshold to the safety interval between the closing command of the previous exit gate within the group and the next opening command of the adjacent exit gate, ensuring a more rigorous and reliable overall logic.

[0065] 3. This invention has excellent scalability, especially when motor vehicles and non-motor vehicles share an exit, it can significantly improve overall travel efficiency. For example, after receiving an opening request for gate a1 in gate group A that is already open, the current opening request for gate a1 can be merged with the previous opening request. By resetting the timer, it can ensure that the continuous opening requests for gate a1 within a short period of time are processed in a centralized manner before switching to the opening request processing of other gates, effectively reducing the number of back-and-forth switching between different gates, and also reducing the data processing pressure on the edge server.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for information-based management of vehicle access, characterized in that, include: Step S1: The edge server creates a gate group A based on manual requests and sets a uniform safety interval threshold Δt between any two exit gates in the group. Then, based on the information input by the manual server, it establishes the jurisdiction relationship between gate group A and at least two exit gates that merge into the confluence section. Among them, any exit gate is attached to a unique gate group, and adjacent exit gates with constraint line distance less than the safety threshold and visual obstruction are included in the same gate group. Step S2: After receiving the opening request from the A-barrier group for the closed gate a1, the edge server records the timestamp of the opening request, and then determines whether the difference between the current time t1 and the most recent closing time t0 of other gates in the group is less than the safety interval threshold. If so, it waits until t0+Δt before proceeding to step S3; otherwise, it proceeds directly to step S3. Step S3: The edge server determines whether there are any waiting lateral vehicles in other gates within the current A gate group. If so, it determines the opening order of the conflicting exit gates in the group according to the timestamps of the recorded pending gate opening requests. Then, when issuing an opening command to the exit gate that opens first, it performs a delay waiting process on the exit gate that opens later so that the time interval between the opening command issued to the exit gate that opens later and the previous closing command of other exit gates in the gate group is greater than or equal to the safety interval threshold.

2. The vehicle access information management method according to claim 1, characterized in that, The edge server determines whether there is a conflicting lateral approach vehicle in barrier a2 of barrier group A by using one or both of the following two dimensions: Dimension 1: A license plate recognition device with a camera monitors whether there are motor vehicles merging into the merging section at the lateral exit of the barrier gate a2; the exit industrial control computer establishes a communication connection with the license plate recognition device and the edge server, and the gate opening request corresponding to the motor vehicle is issued by the exit industrial control computer after verifying that the motor vehicle meets the release conditions; Dimension 2: The card reader deployed at the side exit where the gate a2 is located monitors whether there are non-motorized vehicles merging into the merging section; the non-motorized vehicles communicate with the card reader via radio frequency through magnetic identification cards; wherein, after the card reader recognizes the tag information of the magnetic identification card, it sends a gate opening request carrying a timestamp to the edge server.

3. The vehicle access information management method according to claim 2, characterized in that, When both dimension one and dimension two exist, the method further includes: If the edge server receives an opening request from the card reader or the exit control computer at the side exit where the barrier gate a2 is located after issuing an opening command to the barrier gate a2 and before issuing a closing command to the barrier gate a2 according to the timer, it will reset the timer that maintains the open state of the barrier gate a2 to the first countdown duration and start counting again, and then issue a closing command to the barrier gate a2 after the timer expires. If, before issuing an opening command to the barrier gate a2, the edge server receives at least two opening requests consisting of dimension one and dimension two from the lateral exit where the barrier gate a2 is located, the at least two opening requests are merged into a single opening request, and the timestamp saved is based on the earliest timestamp of the merged opening request. When issuing an opening command to the barrier gate a2, the timer duration is simultaneously set to twice the first duration.

4. The vehicle access information management method according to claim 2, characterized in that, The method further includes: If, before issuing an opening command to the barrier gate a2, the edge server receives an opening request from the lateral exit where the barrier gate a2 is located consisting of only two dimensions two, the server merges the two opening requests into a single opening request and simultaneously sets the timer duration to the first duration when issuing the opening command to the barrier gate a2.

5. The vehicle access information management method according to any one of claims 1 to 4, characterized in that, Also includes: The edge server instructs the interactive terminal at the exit where the gate is located to send a delay notification message via a display screen and / or voice module before the gate is opened to inform the user of the reason for the delay.

6. The vehicle access information management method according to claim 2, characterized in that, Also includes: The edge server uses the camera of the license plate recognition device to capture video images of motor vehicles after the exit gate is opened, and tracks the displacement trajectory of the license plate relative to the camera extracted from the video image. When the displacement trajectory indicates that the motor vehicle is driving in the wrong direction, the file name of the video image is renamed by combining the acquisition time and the identified license plate number, and then saved to an abnormal image library used to assess whether there is an intention to evade payment, in response to the user's retrieval request based on time period and / or license plate information.

7. The vehicle access information management method according to claim 6, characterized in that, Also includes: The edge server extracts at least two key frames from the video image traveling in the direction of departure. Then, it compares each key frame sequentially with image frames of the same vehicle captured at the entrance gate to confirm the license plate entry time. If the consistency comparison result of any key frame is greater than or equal to a set consistency threshold, the subsequent comparison is terminated and the video image is discarded. If the comparison results of all key frames are less than the consistency threshold, the file name of the video image is renamed by combining the capture time and the identified license plate number, and then saved to a Class II abnormal image library for assessing whether there is a potential hit-and-run incident in the garage, in response to user retrieval requests based on time period and / or license plate information.

8. The vehicle access information management method according to claim 7, characterized in that, The vehicle body consistency comparison algorithm specifically includes: Identify and separate the vehicle body from the background; Anchor a set of reference frame points and a set of high-risk collision feature points from the vehicle body; Based on the alignment relationship of the reference frame points, estimate the geometric transformation relationship between the reference frame points in the key frame and the corresponding reference frame points in the inbound image frame. Then, based on the geometric transformation relationship, resample the entire vehicle image in the key frame to achieve a state of relative alignment in attitude and scale with the entire vehicle image in the inbound image frame. The grayscale jump values ​​of the line segment connecting two high-collision feature points are formed into a sequence between adjacent pixels; The similarity of the sequence formed by the gray-scale jump values ​​of the vehicle body images aligned between two image frames is compared one by one. If the similarity of the sequence formed by the gray-scale jump values ​​of any aligned line segment is less than the set consistency threshold, then the consistency comparison result of the current key frame is determined to be less than the set consistency threshold.

9. The vehicle access information management method according to claim 8, characterized in that, The reference frame points include: the roof corner, the window frame corner, and the center recess of the wheel hub; the high-collision feature points include: the headlight corner, the edge corner of the bumper, the bottom end of the side door waistline, and the front end of the door handle.

10. A vehicle access information management system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method described in any one of claims 1 to 9.

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