CN114202817B - ETC radio environment monitoring and guaranteeing method, system, equipment and medium - Google Patents
ETC radio environment monitoring and guaranteeing method, system, equipment and medium Download PDFInfo
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
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- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
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Abstract
The invention provides an ETC radio environment monitoring and guaranteeing method, a system, equipment and a medium, wherein the method comprises the steps of capturing a vehicle image, collecting ETC protocol information and ETC frequency band signals when an RSU device receives a chain building request of a vehicle-mounted OBU device, respectively acquiring first vehicle information and second vehicle information according to the vehicle image and the RSU device, judging whether the first vehicle information and the second vehicle information are consistent or not, acquiring vehicle position information and abnormal type to report an abnormal alarm if the first vehicle information and the second vehicle information are inconsistent, otherwise, acquiring ETC transaction results to judge whether the transaction is successful or not when the RSU device and the vehicle-mounted OBU device are broken, detecting whether the RSU or the OBU has faults according to the ETC protocol information if the RSU or the OBU has the equipment faults, and reporting the abnormal alarm if the RSU or the OBU has the equipment faults. The invention can effectively monitor whether signal interference, card carrying abnormality and equipment abnormality exist when the vehicle passes through the portal, avoid label missing and error label, and provide reliable guarantee for the normal operation of the charging system.
Description
Technical Field
The present invention relates to the field of ETC monitoring technologies, and in particular, to an ETC radio environment monitoring and guaranteeing method, system, computer device, and storage medium.
Background
The ETC technology realizes the formal operation of the charging system in the sectional charging mode, and gradually realizes the free flow passing of the expressway. The running quality of ETC charging, RSU antenna, on-board OBU, etc. become key factors of the running quality of the highway toll collection system. Under the current state of system operation maintenance management, factors such as the quality of the ETC antenna, the installation and debugging of equipment, the operation environment of the equipment, the maintenance of the equipment and the like become key factors for guaranteeing the long-time normal operation of the ETC antenna, and the system operation maintenance workload and the working difficulty of a highway operation unit are greatly increased compared with those before station withdrawal. Through statistical analysis, the existing operation and maintenance system has the problems that ETC portal operation and maintenance staff has high requirements and large gaps, the information acquisition is poor due to the fact that manual inspection and partial monitoring are adopted, the equipment fault triggering and alarm processing manual intervention completion efficiency is low, decision analysis basically depends on experience, equipment fault standards are different, and the operation and maintenance departments are difficult to uniformly manage.
The existing ETC transaction environment equipment monitoring only relates to collecting single equipment monitoring data in an ETC transaction system, aims at solving the unilateral application problem of the single equipment, but the actual ETC radio environment is very complex, the abnormal scene is more, if only one equipment is used for monitoring and analyzing, but the ETC transaction environment condition is not comprehensively monitored by combining the real-time comprehensive analysis of multiple data information of multiple different equipment, different abnormal scenes such as signal interference, card carrying abnormality, RSU or OBU equipment abnormality can not be effectively identified, the occurrence of antenna false mark omission is not easy to be avoided, and effective and reliable guarantee is difficult to be provided for the normal operation of a charging system.
Therefore, it is needed to provide an ETC radio environment monitoring and guaranteeing method capable of comprehensively monitoring the operation health condition of the system based on real-time comprehensive analysis of multiple data information of multiple different devices, effectively identifying different abnormal scenes such as signal interference, card carrying abnormality, RSU or OBU device abnormality, avoiding occurrence of antenna false mark and miss mark, improving charging accuracy, providing convenience for device maintenance, and effectively guaranteeing normal operation of an ETC charging system.
Disclosure of Invention
The invention aims to provide an ETC radio environment monitoring and guaranteeing method, which is characterized in that by monitoring the communication state of RSU equipment and vehicle-mounted OBU equipment, ETC transaction protocol and ETC frequency band signals, and combining a camera to acquire a vehicle image for comprehensive analysis, different abnormal scenes such as adjacent channel interference, trailing interference, card carrying abnormality, RSU or OBU equipment abnormality and the like are accurately identified, and abnormal alarms are reported according to the different abnormal scenes, so that the defects of the prior art are overcome, the occurrence of false antenna mark missing is effectively avoided, the charging accuracy is improved, convenience is brought to equipment maintenance, and the normal operation of an ETC charging system is effectively ensured.
In order to achieve the above object, it is necessary to provide an ETC radio environment monitoring and guaranteeing method, system, computer device and storage medium for the above technical problems.
In a first aspect, an embodiment of the present invention provides an ETC radio environment monitoring and guaranteeing method, including the steps of:
Monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
Acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting a corresponding abnormality alarm according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken;
And judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not according to the ETC protocol information, and if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm.
Further, the step of acquiring the first vehicle information according to the vehicle image includes:
OCR recognition is carried out on the vehicle image to obtain the real license plate number;
And obtaining the real vehicle model according to the vehicle image and the radar scanning equipment.
Further, the step of obtaining the real vehicle model according to the vehicle image and the radar scanning device includes:
extracting a vehicle trunk part according to the vehicle image, and acquiring two-dimensional coordinates of the image of the vehicle trunk part;
converting the image two-dimensional coordinates into image three-dimensional coordinates, and scanning the vehicle by adopting a radar according to the image three-dimensional coordinates to obtain a corresponding vehicle contour;
and determining the real vehicle type according to the vehicle outline.
Further, the step of obtaining the communication vehicle-mounted OBU device ID through the RSU device, and obtaining the second vehicle information according to the communication vehicle-mounted OBU device ID includes:
Acquiring a corresponding communication vehicle-mounted OBU equipment ID according to the link establishment request;
and sending the communication vehicle-mounted OBU equipment ID to a remote server, and acquiring the binding license plate number and the binding vehicle type.
Further, the step of obtaining the vehicle position information and the abnormality type and reporting the corresponding abnormality alarm according to the vehicle position information and the abnormality type comprises the following steps:
the real license plate number is sent to a remote server, and a corresponding real vehicle-mounted OBU equipment ID is obtained;
Respectively acquiring first position information, second position information and third position information corresponding to the real vehicle-mounted OBU equipment ID, the communication vehicle-mounted OBU equipment ID and the RSU equipment;
Judging whether the first position information is consistent with the third position information, if not, judging that the abnormal type is card carrying abnormality, otherwise, judging whether the first position information is consistent with the second position information;
if the first position information is consistent with the second position information, judging that the abnormal type is trailing interference abnormality, otherwise, judging that the abnormal type is adjacent channel interference abnormality;
Taking the first position information, the second position information and the third position information as the vehicle position information;
Generating alarm information according to the vehicle position information, the abnormal type, the vehicle image, the communication vehicle-mounted OBU equipment ID, the first vehicle information and the second vehicle information, sending the alarm information to a monitoring terminal, and tracking a vehicle corresponding to the alarm information according to the vehicle position information.
Further, according to the ETC protocol information, detecting whether an equipment fault exists between the RSU equipment and the on-board OBU equipment, and if an equipment fault exists between the RSU equipment and one of the on-board OBU equipment, reporting an abnormal alarm, including:
Analyzing the ETC protocol information to obtain corresponding interactive data frame information;
judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is complete or not according to the interactive data frame information;
If the ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is incomplete, judging whether the downlink data missing number corresponding to the RSU equipment is the same as the uplink data missing number corresponding to the vehicle-mounted OBU equipment;
If the number of the downlink data deletions is the same as the number of the uplink data deletions, acquiring the ETC frequency band signal, detecting whether a signal interference source exists according to the ETC frequency band signal, otherwise, judging whether the number of the downlink data deletions is less than the number of the uplink data deletions;
If the number of the downlink data deletions is smaller than the number of the uplink data deletions, judging that the RSU equipment is abnormal, and reporting an RSU equipment abnormality alarm, otherwise, judging that the vehicle-mounted OBU equipment is abnormal, and reporting a vehicle-mounted OBU equipment abnormality alarm.
Further, the step of acquiring the ETC frequency band signal and detecting whether a signal interference source exists according to the ETC frequency band signal includes:
preprocessing the ETC frequency band signal by adopting a combined filter to obtain an ETC frequency band signal to be analyzed; the combined filter comprises mean filtering and band-pass filtering;
performing analog-to-digital conversion on the ETC frequency band signal to be analyzed to obtain an ETC frequency band digital signal;
according to the ETC frequency band digital signal, calculating by adopting an FFT frequency domain algorithm to obtain corresponding signal intensity and signal frequency;
Judging whether the signal intensity is larger than a preset intensity threshold value, if so, judging that the signal interference source exists, acquiring positioning information of the signal interference source, and reporting an abnormal alarm of the interference source according to the positioning information, the signal intensity and the signal frequency.
In a second aspect, an embodiment of the present invention provides an ETC radio environment monitoring and securing system, the system including:
the information acquisition module is used for monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
the information processing module is used for acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
The first processing module is used for judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting corresponding abnormality alarms according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken;
And the second processing module is used for judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not according to the ETC protocol information, and if equipment faults exist between one of the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm.
In a third aspect, embodiments of the present invention further provide a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a fourth aspect, embodiments of the present invention also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above method.
The application provides an ETC radio environment monitoring and guaranteeing method, an ETC radio environment monitoring and guaranteeing system, computer equipment and a storage medium, wherein by the method, whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment or not is monitored in real time, when the chain building request is confirmed to be received, a camera is started to capture a vehicle image, and the ETC monitoring equipment is started to acquire ETC protocol information and ETC frequency band signals; acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting a corresponding abnormality alarm according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken; and judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not according to the ETC protocol information, and if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm. Compared with the prior art, the application has the advantages that the communication state of the RSU equipment and the vehicle-mounted OBU equipment is actually monitored, the vehicle image is captured by combining with the camera, the ETC monitoring equipment acquires ETC protocol information and ETC frequency band signals, and acquires various data information of different equipment to comprehensively monitor and comprehensively analyze the ETC transaction environment conditions, so that different abnormal scenes such as signal interference, card carrying abnormality, RSU or OBU equipment abnormality and the like can be effectively identified, the occurrence of false mark and missed mark of an antenna can be effectively avoided, the charging accuracy is improved, meanwhile, convenience is provided for ETC equipment maintenance, and further, the effective and reliable guarantee is provided for the normal operation of a charging system.
Drawings
FIG. 1 is a flow chart of an ETC radio Environment monitoring and security method in an embodiment of the invention;
FIG. 2 is a schematic flow chart of interaction between an RSU device and a vehicle-mounted OBU device in an ETC radio environment according to an embodiment of the present invention via a DSRC protocol;
FIG. 3 is a schematic diagram of the ETC radio environment monitoring and assurance system according to an embodiment of the present invention;
Fig. 4 is an internal structural view of a computer device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples, and it is apparent that the examples described below are part of the examples of the present application, which are provided for illustration only and are not intended to limit the scope of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The ETC radio environment monitoring and guaranteeing method provided by the invention can be applied to the existing ETC charging supervision system, and only needs to arrange ETC monitoring equipment for collecting ETC protocol information and ETC frequency band signals on each portal frame provided with a camera and RSU equipment on a highway, so that the communication state of the RSU equipment and the vehicle-mounted OBU equipment can be monitored in time, the ETC monitoring equipment is combined with the camera to capture vehicle images, the ETC protocol information and the ETC frequency band signals are collected, the complete monitoring and comprehensive analysis are carried out on the ETC transaction environment condition matched with each portal frame, so that different abnormal scenes such as signal interference, card carrying abnormality, RSU or OBU equipment abnormality and the like when a vehicle passes through each portal frame can be effectively identified, the occurrence of antenna mismark and omission of charging on each ETC road section can be avoided, the health state of each ETC equipment can be perceived in time, and the corresponding maintenance and replacement can be provided in time, and the effective and reliable guarantee is provided for the normal running of the whole ETC charging system. The following examples will explain the ETC radio environment monitoring and securing method of the present invention in detail.
In one embodiment, as shown in fig. 1, there is provided an ETC radio environment monitoring and securing method, including the steps of:
S11, monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
The RSU device and the on-board OBU device interact based on DSRC protocol, and a protocol exchange flow is shown in fig. 2, where the link establishment request is a VST message of the on-board OBU device in response to a BST message broadcast by the RSU device. In an actual ETC charging system, a road side unit RSU device continuously broadcasts frame control information by utilizing a physical layer, when the vehicle-mounted OBU device enters an effective transmitting area and receives the information, a corresponding VST request message is replied, after the road side unit RSU device receives the VST request link establishment message, the road side unit RSU device responds and sends the VST request link establishment message to the vehicle-mounted OBU device, the vehicle-mounted OBU device confirms and sends the road side unit RSU device to carry out information verification, after the verification is successful, communication connection between the road side unit RSU device and the road side unit RSU device is established, namely the link establishment is successful, the communication link can be used for carrying out information interaction, data exchange of corresponding application service types is completed, after the data interaction required by the service types is completed, the road side unit RSU device sends release connection information to the vehicle-mounted OBU device, and the vehicle-mounted OBU device receives the information confirmation and then breaks the link. According to the embodiment, based on the existing communication interaction flow of the RSU equipment and the vehicle-mounted OBU equipment, whether the VST information of the BST information which is broadcast by the vehicle-mounted OBU equipment and is responded by the RSU equipment is used as the basis for judging whether a vehicle enters an RSU sensing area or not and starting a new round of ETC interaction is judged, at the moment, a camera is started to take a candid photograph, effective vehicle images can be timely obtained, at the moment, an ETC monitoring device is started to collect ETC protocol information and ETC frequency band signals, complete ETC protocol information and ETC frequency band signal data can be obtained, other redundant data can not be obtained, consumption of data processing is avoided, and data processing efficiency is improved on the basis of guaranteeing data effectiveness.
S12, acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
the vehicle image is a two-dimensional image captured by the camera, and can also be an effective two-dimensional image obtained by extracting a video stream acquired based on continuous shooting of a certain time period by the camera. As described above, in principle, when the RSU device receives a link establishment request of the on-board OBU device, in case of checking adjacent road interference, a vehicle entering the sensing area should already exist on the lane corresponding to the RSU device, and at this time, the image captured by the camera is started to include the vehicle feature, and the license plate number can be accurately extracted based on the vehicle image, so that the vehicle contour information can be effectively identified. Specifically, the step of acquiring the first vehicle information according to the vehicle image includes:
OCR recognition is carried out on the vehicle image to obtain the real license plate number; the method for specifically acquiring the real license plate number by using the character recognition technology based on the image through OCR recognition comprises the following steps: firstly, detecting by using a cascade classifier CASCADECLASSIFIER of openCV to obtain a rectangular area of the whole image where the license plate is located; secondly, based on the obtained rectangular area, the left, right, upper and lower boundaries of the license plate are secondarily confirmed, whether the license plate is inclined or not is judged, and if the license plate is inclined, correction is carried out; and cutting license plate characters through the corrected area by using the sliding window, and identifying each character by using CNN neural network deep learning to obtain an identification result meeting the confidence coefficient requirement, namely obtaining the real license plate number.
And obtaining the real vehicle model according to the vehicle image and the radar scanning equipment. The radar scanning device is not directly used for scanning the vehicle to obtain vehicle contour information, but is used for scanning the coordinate information of the vehicle main body in the two-dimensional vehicle image obtained by snapshot, so that accurate contour information of the vehicle is rapidly obtained, and further the vehicle identification efficiency and accuracy are improved. Specifically, the method comprises the following steps:
Extracting a vehicle trunk part according to the vehicle image, and acquiring two-dimensional coordinates of the image of the vehicle trunk part; the vehicle trunk portion may be effectively extracted based on the color, texture, spatial position, etc. of the vehicle feature in the vehicle image, and the extraction method of the vehicle trunk portion is not limited herein. After the vehicle trunk part is obtained, two-dimensional coordinates of the image corresponding to the vehicle trunk part are generated, so that the radar scanning device can conveniently convert the coordinates and then use the coordinates.
Converting the image two-dimensional coordinates into image three-dimensional coordinates, and scanning the vehicle by adopting a radar according to the image three-dimensional coordinates to obtain a corresponding vehicle contour; the radar scanning can be performed according to set scanning parameters, so that scanning efficiency and accuracy of a result are provided. In this embodiment, the two-dimensional coordinates of the image acquired based on the two-dimensional vehicle image are converted into three-dimensional coordinates of the image that can be used for radar scanning, and the scanning parameters of the radar scanning device are set accordingly.
And determining the real vehicle type according to the vehicle outline.
It should be noted that, in order to improve accuracy of vehicle image processing, before acquiring the first vehicle information based on the vehicle image, it is required to identify whether the vehicle image has a vehicle feature (i.e. whether the vehicle is shot), and if not, the capturing is performed for a preset number of times within a preset duration range, so as to avoid abnormal scene confirmation errors. If the vehicle image with the vehicle characteristics is not acquired after the snapshot of the preset times is executed within the preset duration range, it can be considered that the vehicle-mounted OBU device of the link establishment request received by the RSU device may be a device on an adjacent road vehicle at the moment, that is, the adjacent road interference abnormality exists, then the adjacent road interference alarm needs to be reported, the receiving sensitivity of the RSU device corresponding to the lane is adjusted, so that the receiving of the adjacent road signal is avoided as much as possible, the processing efficiency of the RSU device is improved, and meanwhile, the possibility of error marking and error marking is avoided.
Meanwhile, as described above, after the RSU device and the on-board OBU device establish communication connection, data exchange may be achieved by interaction according to the actual service type, that is, the on-board OBU device that establishes communication connection with the RSU device may obtain the ID of the on-board OBU device by sending a command, and then the obtained communication on-board OBU device ID is sent to a remote server to obtain second vehicle information that is matched with the communication on-board OBU device ID. In principle, the first vehicle information obtained according to the vehicle image and the second vehicle information obtained according to the communication vehicle-mounted OBU equipment ID should be completely consistent, but in an actual monitoring scene, abnormal phenomena such as multi-card midway replacement fee, adjacent channel signal interference error marks, vehicle trailing interference error marks or interference source influence miss marks may exist in the vehicle, so that the first vehicle information and the second vehicle information are needed to be used as bases, and the following method steps are adopted in combination with the acquired ETC protocol information and ETC frequency band signals to accurately identify and divide different possible abnormal scenes. It should be noted that, the remote server stores a database for maintaining the license plate number, vehicle type, color, vehicle owner, vehicle-mounted OBU device ID and other related information, and can be accessed and inquired by the ETC monitoring system to obtain related data information for processing related services.
S13, judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting a corresponding abnormality alarm according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken;
When the first vehicle information is inconsistent with the second vehicle information, different abnormal scenes can be corresponding, different abnormal scenes correspond to different abnormal types, the reported abnormal alarms are also different, specifically, the steps of acquiring the vehicle position information and the abnormal types and reporting the corresponding abnormal alarms according to the vehicle position information and the abnormal types comprise:
The real license plate number is sent to a remote server, and a corresponding real vehicle-mounted OBU equipment ID is obtained; it should be noted that when the real vehicle-mounted OBU device ID registered in the database is searched on the remote server by using the real license plate number, there may be a case that no matching information is found, so that the vehicle should belong to a case that no ETC is handled, and the OBU card carried on the vehicle should be an OBU card of another person or another vehicle of the person, and an abnormal alarm of card carrying abnormality needs to be performed, so that the subsequent management and verification are facilitated.
Respectively acquiring first position information, second position information and third position information corresponding to the real vehicle-mounted OBU equipment ID, the communication vehicle-mounted OBU equipment ID and the RSU equipment;
Judging whether the first position information is consistent with the third position information, if not, judging that the abnormal type is card carrying abnormality, otherwise, judging whether the first position information is consistent with the second position information; the first position information and the third position information are inconsistent, namely the real vehicle-mounted OBU device ID of the vehicle is not used or is used at other lane positions which are not where the RSU device is located, and at the moment, the abnormality type is determined to be card carrying abnormality; and when the first position information is consistent with the third position information, whether the first position information of the real vehicle-mounted OBU equipment ID is consistent with the second position information of the communication vehicle-mounted OBU equipment ID is further judged, so that abnormal phenomena such as adjacent channel signal interference, vehicle trailing interference or influence of an interference source are effectively distinguished.
If the first position information is consistent with the second position information, judging that the abnormal type is trailing interference abnormality, otherwise, judging that the abnormal type is adjacent channel interference abnormality; the first position information is consistent with the second position information, and the fact that the real vehicle-mounted OBU equipment ID and the communication vehicle-mounted OBU equipment ID are in a lane sensing area where the same RSU equipment is located is indicated, and at the moment, a scene that the front and rear vehicles follow interference is most likely; meanwhile, if the first position information is inconsistent with the second position information, the fact that the real vehicle-mounted OBU equipment ID is in the induction zone of the lane where the corresponding RSU equipment is located is indicated, but the interference of the communication vehicle-mounted OBU equipment ID of the adjacent lane is caused, the omission of the real vehicle-mounted OBU equipment ID is most likely to occur, and the error of the communication vehicle-mounted OBU equipment ID of the adjacent lane is indicated. The following interference and the adjacent channel interference can cause charging errors, and vehicle information and position information corresponding to the real vehicle-mounted OBU equipment ID and the communication vehicle-mounted OBU equipment ID are required to be reported, so that correction of subsequent error standard errors is facilitated, and charging accuracy is improved.
Taking the first position information, the second position information and the third position information as the vehicle position information;
Generating alarm information according to the vehicle position information, the abnormal type, the vehicle image, the communication vehicle-mounted OBU equipment ID, the first vehicle information and the second vehicle information, sending the alarm information to a monitoring terminal, and tracking a vehicle corresponding to the alarm information according to the vehicle position information.
The monitoring terminal can be terminal equipment used by the existing ETC monitoring system, can be an independent monitoring terminal, is not limited to a PC terminal or various mobile terminals, can be used for linking with terminal equipment of other supervision law enforcement departments, is convenient for timely processing abnormal alarms, and effectively tracks vehicles needing supervision.
In order to ensure the comprehensiveness of monitoring, in this embodiment, after confirming that the first vehicle information is completely consistent with the second vehicle information, when the RSU device and the on-board OBU device are disconnected, the following steps are adopted to further analyze whether an ETC transaction result is abnormal or not, and monitor the RSU device, the on-board OBU device and the signal interference source in combination with different abnormal conditions.
S14, judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not according to ETC protocol information, and if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm.
The ETC transaction results are basically divided into two types of transaction success and transaction failure, and if the transaction success proves that the functions of equipment in the ETC charging system are normal, the reasons of the transaction failure need to be analyzed according to the acquired ETC protocol information, and whether equipment faults or other signal interference sources influence exists is determined. Specifically, according to the ETC protocol information, detecting whether an equipment fault exists between the RSU equipment and the on-board OBU equipment, and if an equipment fault exists between the RSU equipment and one of the on-board OBU equipment, reporting an abnormal alarm, where the step includes:
analyzing the ETC protocol information to obtain corresponding interactive data frame information; the ETC protocol information comprises all interaction information of the RSU device and the vehicle-mounted OBU device which communicate by adopting a DSRC protocol. In principle, a completed transaction flow should be that after the RSU device establishes communication connection with the on-board OBU device, the RSU device obtains relevant information of the on-board OBU device by using a command message according to a service type requirement, and the on-board OBU device returns a corresponding response message, that is, the interaction information between the RSU device and the on-board OBU device is symmetrical and equal in number, and finally, the on-board OBU device is terminated by using a broken link confirmation of the on-board OBU device.
Judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is complete or not according to the interactive data frame information;
The interactive data frame information is obtained by analyzing the interactive data frame information according to a corresponding DSRC protocol format, and is not described herein. According to the embodiment, whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is complete is judged according to whether the acquired interactive data frame information accords with a complete communication flow.
If the ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is incomplete, judging whether the downlink data missing number corresponding to the RSU equipment is the same as the uplink data missing number corresponding to the vehicle-mounted OBU equipment;
The number of the downlink data missing and the number of the uplink data missing are determined by comparing the interactive data frame information obtained through actual analysis with interactive information which is respectively required to be sent by RSU equipment and vehicle-mounted OBU equipment in a finished ETC transaction flow. If the complete ETC transaction flow requires 8 pieces of interaction information, that is, the RSU device and the vehicle-mounted OBU device respectively correspond to 4 pieces of downlink data and uplink data, if any one of the downlink data and the uplink data in the interaction data frame information obtained by analysis is less than 4 pieces, the transaction is incomplete, and there may be more downlink data missing than uplink data in actual operation, less downlink data missing than uplink data, or the situation that the number of downlink data missing from the uplink data is the same, and each situation may respectively correspond to different abnormal scenes.
If the number of the downlink data deletions is the same as the number of the uplink data deletions, acquiring the ETC frequency band signal, detecting whether a signal interference source exists according to the ETC frequency band signal, otherwise, judging whether the number of the downlink data deletions is less than the number of the uplink data deletions; the number of downlink data missing is the same as the number of uplink data missing, and if the transaction is incomplete, other signal interference sources may exist to cause communication interruption between the RSU equipment and the vehicle-mounted OBU equipment, and the acquired ETC frequency band signals need to be combined for further investigation. Specifically, the step of acquiring the ETC frequency band signal and detecting whether a signal interference source exists according to the ETC frequency band signal includes:
Preprocessing the ETC frequency band signal by adopting a combined filter to obtain an ETC frequency band signal to be analyzed; the combined filter comprises mean filtering and band-pass filtering; noise may exist in the ETC frequency band signal acquisition process, and before the ETC frequency band signal is used for analysis, the embodiment needs to sequentially adopt average filtering and band-pass filtering to carry out smoothing and denoising processing.
Performing analog-to-digital conversion on the ETC frequency band signal to be analyzed to obtain an ETC frequency band digital signal;
According to the ETC frequency band digital signal, calculating by adopting an FFT frequency domain algorithm to obtain corresponding signal intensity and signal frequency; the FFT frequency domain algorithm converts a time domain signal corresponding to an ETC frequency band digital signal into a corresponding frequency domain signal through discrete Fourier transform, acquires a plurality of frequency points based on sampling to obtain a signal frequency response value on the corresponding frequency point, and adopts a signal power calculation formula to obtain signal power corresponding to each frequency point as the signal strength of each frequency point for subsequent signal interference source judgment.
Judging whether the signal intensity is larger than a preset intensity threshold value, if so, judging that the signal interference source exists, acquiring positioning information of the signal interference source, and reporting an abnormal alarm of the interference source according to the positioning information, the signal intensity and the signal frequency. The preset intensity threshold can be determined according to the intensities of signals transmitted by the actual RSU equipment and the vehicle-mounted OBU equipment, namely, the signal interference source can be simply and effectively identified by adopting the method, and the signal interference source can be identified, positioned and abnormally alarmed according to the signal intensity and the signal frequency, so that the problem of transaction failure caused by signal interference can be effectively solved to a certain extent.
If the number of the downlink data deletions is smaller than the number of the uplink data deletions, judging that the RSU equipment is abnormal, and reporting an RSU equipment abnormality alarm, otherwise, judging that the vehicle-mounted OBU equipment is abnormal, and reporting a vehicle-mounted OBU equipment abnormality alarm. The number of downlink data deletions is smaller than the number of uplink data deletions, and the situation that the uplink equipment is disconnected abnormally can be understood, so that the signal of the vehicle-mounted OBU equipment is unstable, and the vehicle-mounted OBU equipment needs to be subjected to alarm investigation when faults occur; similarly, the number of missing uplink data is smaller than the number of missing downlink data, and it can be understood that the downlink equipment is abnormally disconnected, so that signals of the RSU equipment can be considered to be unstable, the RSU equipment needs to be subjected to alarm investigation when faults occur, and technical means such as signal transmission frequency of the RSU equipment can be specifically acquired to further diagnose whether the RSU equipment needs to be replaced or maintained so as to ensure that subsequent ETC transactions are normal.
The embodiment of the application provides an ETC radio environment monitoring and guaranteeing method for comprehensively monitoring and comprehensively analyzing ETC transaction environment conditions by actually monitoring the communication state of RSU equipment and vehicle-mounted OBU equipment and combining a camera to capture vehicle images, wherein ETC monitoring equipment acquires ETC protocol information and ETC frequency band signals, acquires various data information of different equipment, can rapidly and effectively acquire required information, can effectively identify different abnormal scenes such as signal interference, trailing interference, adjacent channel interference, card carrying abnormality, RSU or OBU equipment abnormality and the like based on the acquired data information, effectively avoids the occurrence of antenna false mark and omission mark, improves the charging accuracy, and simultaneously provides convenience for ETC equipment maintenance, and further provides effective and reliable guarantee for normal operation of a charging system.
Although the steps in the flowcharts described above are shown in order as indicated by arrows, these steps are not necessarily executed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders.
In one embodiment, as shown in fig. 3, there is provided an ETC radio environment monitoring and assurance system, the system comprising:
The information acquisition module 1 is used for monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
The information processing module 2 is used for acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
the first processing module 3 is configured to determine whether the first vehicle information is consistent with the second vehicle information, if not, acquire vehicle position information and an anomaly type, report a corresponding anomaly alarm according to the vehicle position information and the anomaly type, otherwise monitor whether the RSU device and the vehicle-mounted OBU device are broken, and acquire an ETC transaction result of the RSU device and the vehicle-mounted OBU device when the link is broken;
And the second processing module 4 is configured to determine, according to the ETC transaction result, whether an ETC transaction between the RSU device and the vehicle-mounted OBU device is successful, if not, detect, according to the ETC protocol information, whether a device failure exists between the RSU device and the vehicle-mounted OBU device, and if a device failure exists between one of the RSU device and the vehicle-mounted OBU device, report an abnormal alarm.
It should be noted that, for specific limitation of the ETC radio environment monitoring and protecting system, reference may be made to the limitation of the ETC radio environment monitoring and protecting method hereinabove, and the description thereof will not be repeated here. The above-described respective modules in the ETC radio environment monitoring and securing system may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
Fig. 4 shows an internal structural diagram of a computer device, which may be a terminal or a server in particular, in one embodiment. As shown in fig. 4, the computer device includes a processor, a memory, a network interface, a display, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements an ETC radio environment monitoring and assurance method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those of ordinary skill in the art that the architecture shown in fig. 4 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting as to the computer device to which the present inventive arrangements may be implemented, and that a particular computing device may include more or less components than those shown in the middle, or may combine some of the components, or have the same arrangement of components.
In one embodiment, a computer device is provided comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when the computer program is executed.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, implements the steps of the above method.
In summary, the ETC radio environment monitoring and guaranteeing method, the system, the computer equipment and the storage medium provided by the embodiment of the invention realize that whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment or not is monitored in real time, and when the chain building request is confirmed to be received, a camera is started to capture a vehicle image, and the ETC monitoring equipment is started to acquire ETC protocol information and ETC frequency band signals; acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting a corresponding abnormality alarm according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken; according to the ETC transaction result, whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not is judged, if not, according to the ETC protocol information, whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not is detected, if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, the technical scheme of abnormal alarming is reported, through the fact that the communication states of the RSU equipment and the vehicle-mounted OBU equipment are monitored, a camera is combined to capture vehicle images, the ETC monitoring equipment acquires ETC protocol information and ETC frequency band signals, the ETC radio environment monitoring guaranteeing method for comprehensively monitoring and comprehensively analyzing the ETC transaction environment conditions by acquiring various data information of different equipment is achieved, required information can be acquired rapidly and effectively, charging can be effectively identified on different abnormal scenes such as signal interference, trailing interference, adjacent channel interference, card carrying abnormality, RSU or OBU equipment abnormality and the like, meanwhile, the charging accuracy is improved, convenience is further provided for ETC equipment maintenance operation is further guaranteed, and a normal and reliable system is provided.
In this specification, each embodiment is described in a progressive manner, and all the embodiments are directly the same or similar parts referring to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments. It should be noted that, any combination of the technical features of the foregoing embodiments may be used, and for brevity, all of the possible combinations of the technical features of the foregoing embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples represent only a few preferred embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and such modifications and substitutions should also be considered to be within the scope of the present application. Therefore, the protection scope of the patent of the application is subject to the protection scope of the claims.
Claims (7)
1. An ETC radio environment monitoring and assurance method, characterized in that it comprises the steps of:
Monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
Acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting a corresponding abnormality alarm according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken;
judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment or not according to the ETC protocol information, and if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm;
The step of acquiring the vehicle position information and the abnormality type and reporting the corresponding abnormality alarm according to the vehicle position information and the abnormality type comprises the following steps:
the real license plate number is sent to a remote server, and a corresponding real vehicle-mounted OBU equipment ID is obtained;
Respectively acquiring first position information, second position information and third position information corresponding to the real vehicle-mounted OBU equipment ID, the communication vehicle-mounted OBU equipment ID and the RSU equipment;
Judging whether the first position information is consistent with the third position information, if not, judging that the abnormal type is card carrying abnormality, otherwise, judging whether the first position information is consistent with the second position information;
if the first position information is consistent with the second position information, judging that the abnormal type is trailing interference abnormality, otherwise, judging that the abnormal type is adjacent channel interference abnormality;
Taking the first position information, the second position information and the third position information as the vehicle position information;
generating alarm information according to the vehicle position information, the abnormal type, the vehicle image, the communication vehicle-mounted OBU equipment ID, the first vehicle information and the second vehicle information, sending the alarm information to a monitoring terminal, and tracking a vehicle corresponding to the alarm information according to the vehicle position information;
The step of acquiring first vehicle information according to the vehicle image includes:
judging whether the vehicle image has the vehicle characteristics or not, if not, executing the snapshot for preset times within the preset duration range to acquire the vehicle image with the vehicle characteristics;
obtaining the real vehicle model according to the vehicle image and the radar scanning device, wherein the method comprises the following steps:
extracting a vehicle trunk part according to the vehicle image, and acquiring two-dimensional coordinates of the image of the vehicle trunk part; the vehicle trunk part is extracted based on the vehicle characteristic information in the vehicle image; the vehicle characteristic information comprises color, texture and spatial position;
converting the image two-dimensional coordinates into image three-dimensional coordinates, and scanning the vehicle by adopting a radar according to the image three-dimensional coordinates to obtain a corresponding vehicle contour;
Determining the real vehicle type according to the vehicle outline;
According to the ETC protocol information, detecting whether equipment faults exist in the RSU equipment and the vehicle-mounted OBU equipment, and if equipment faults exist in one of the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm, wherein the step of reporting the abnormal alarm comprises the following steps:
Analyzing the ETC protocol information to obtain corresponding interactive data frame information;
judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is complete or not according to the interactive data frame information;
If the ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is incomplete, judging whether the downlink data missing number corresponding to the RSU equipment is the same as the uplink data missing number corresponding to the vehicle-mounted OBU equipment;
If the number of the downlink data deletions is the same as the number of the uplink data deletions, acquiring the ETC frequency band signal, detecting whether a signal interference source exists according to the ETC frequency band signal, otherwise, judging whether the number of the downlink data deletions is less than the number of the uplink data deletions;
If the number of the downlink data deletions is smaller than the number of the uplink data deletions, judging that the RSU equipment is abnormal, and reporting an RSU equipment abnormality alarm, otherwise, judging that the vehicle-mounted OBU equipment is abnormal, and reporting a vehicle-mounted OBU equipment abnormality alarm.
2. The ETC radio environment monitoring and assurance method of claim 1, wherein the step of acquiring first vehicle information from the vehicle image further includes:
and performing OCR (optical character recognition) on the vehicle image to obtain the real license plate number.
3. The ETC radio environment monitoring and securing method according to claim 1, wherein the step of acquiring a communication vehicle-mounted OBU device ID by the RSU device, and obtaining second vehicle information from the communication vehicle-mounted OBU device ID includes:
Acquiring a corresponding communication vehicle-mounted OBU equipment ID according to the link establishment request;
and sending the communication vehicle-mounted OBU equipment ID to a remote server, and acquiring the binding license plate number and the binding vehicle type.
4. The ETC radio environment monitoring and securing method according to claim 1, characterized in that the step of acquiring the ETC frequency band signal and detecting whether a signal interference source exists according to the ETC frequency band signal includes:
preprocessing the ETC frequency band signal by adopting a combined filter to obtain an ETC frequency band signal to be analyzed; the combined filter comprises mean filtering and band-pass filtering;
performing analog-to-digital conversion on the ETC frequency band signal to be analyzed to obtain an ETC frequency band digital signal;
according to the ETC frequency band digital signal, calculating by adopting an FFT frequency domain algorithm to obtain corresponding signal intensity and signal frequency;
Judging whether the signal intensity is larger than a preset intensity threshold value, if so, judging that the signal interference source exists, acquiring positioning information of the signal interference source, and reporting an abnormal alarm of the interference source according to the positioning information, the signal intensity and the signal frequency.
5. An ETC radio environment monitoring and assurance system, the system comprising:
the information acquisition module is used for monitoring whether the RSU equipment receives a chain building request of the vehicle-mounted OBU equipment in real time, starting a camera to capture a vehicle image when confirming that the chain building request is received, and starting the ETC monitoring equipment to acquire ETC protocol information and ETC frequency band signals; the RSU equipment, the camera and the ETC monitoring equipment are erected on the same portal frame;
the information processing module is used for acquiring first vehicle information according to the vehicle image, acquiring a communication vehicle-mounted OBU device ID through the RSU device, and acquiring second vehicle information according to the communication vehicle-mounted OBU device ID; the first vehicle information comprises a real license plate number and a real vehicle type; the second vehicle information comprises a binding license plate number and a binding vehicle type corresponding to the communication vehicle-mounted OBU equipment ID;
The first processing module is used for judging whether the first vehicle information is consistent with the second vehicle information, if not, acquiring vehicle position information and an abnormality type, reporting corresponding abnormality alarms according to the vehicle position information and the abnormality type, otherwise, monitoring whether the RSU equipment and the vehicle-mounted OBU equipment are broken, and acquiring ETC transaction results of the RSU equipment and the vehicle-mounted OBU equipment when the links are broken;
The second processing module is used for judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is successful or not according to the ETC transaction result, if not, detecting whether equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment according to the ETC protocol information, and if equipment faults exist between the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm;
The step of acquiring first vehicle information according to the vehicle image includes:
judging whether the vehicle image has the vehicle characteristics or not, if not, executing the snapshot for preset times within the preset duration range to acquire the vehicle image with the vehicle characteristics;
obtaining the real vehicle model according to the vehicle image and the radar scanning device, wherein the method comprises the following steps:
extracting a vehicle trunk part according to the vehicle image, and acquiring two-dimensional coordinates of the image of the vehicle trunk part; the vehicle trunk part is extracted based on the vehicle characteristic information in the vehicle image; the vehicle characteristic information comprises color, texture and spatial position;
converting the image two-dimensional coordinates into image three-dimensional coordinates, and scanning the vehicle by adopting a radar according to the image three-dimensional coordinates to obtain a corresponding vehicle contour;
Determining the real vehicle type according to the vehicle outline;
According to the ETC protocol information, detecting whether equipment faults exist in the RSU equipment and the vehicle-mounted OBU equipment, and if equipment faults exist in one of the RSU equipment and the vehicle-mounted OBU equipment, reporting an abnormal alarm, wherein the step of reporting the abnormal alarm comprises the following steps:
Analyzing the ETC protocol information to obtain corresponding interactive data frame information;
judging whether ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is complete or not according to the interactive data frame information;
If the ETC transaction between the RSU equipment and the vehicle-mounted OBU equipment is incomplete, judging whether the downlink data missing number corresponding to the RSU equipment is the same as the uplink data missing number corresponding to the vehicle-mounted OBU equipment;
If the number of the downlink data deletions is the same as the number of the uplink data deletions, acquiring the ETC frequency band signal, detecting whether a signal interference source exists according to the ETC frequency band signal, otherwise, judging whether the number of the downlink data deletions is less than the number of the uplink data deletions;
If the number of the downlink data deletions is smaller than the number of the uplink data deletions, judging that the RSU equipment is abnormal, and reporting an RSU equipment abnormality alarm, otherwise, judging that the vehicle-mounted OBU equipment is abnormal, and reporting a vehicle-mounted OBU equipment abnormality alarm.
6. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1 to 4 when the computer program is executed.
7. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 4.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574540A (en) * | 2014-12-24 | 2015-04-29 | 北京速通科技有限公司 | Electronic toll collection system and method |
| CN110288839A (en) * | 2019-07-30 | 2019-09-27 | 成都安杰联科技有限公司 | A kind of device and method of the detection positioning of ETC interference unit |
| CN112738784A (en) * | 2020-12-29 | 2021-04-30 | 北京万集智能网联技术有限公司 | Communication control method, communication control device, vehicle-mounted unit, device and readable storage medium |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3106863B2 (en) * | 1994-07-11 | 2000-11-06 | トヨタ自動車株式会社 | Road-to-vehicle communication device |
| JP4973534B2 (en) * | 2008-02-18 | 2012-07-11 | 沖電気工業株式会社 | Point-to-multipoint system and control method |
| CN103514637A (en) * | 2012-06-15 | 2014-01-15 | 深圳市金溢科技有限公司 | DSRC-based adjacent channel interference prevention method and device, and application system |
| CN107452080A (en) * | 2016-12-30 | 2017-12-08 | 深圳市金溢科技股份有限公司 | A kind of ETC weighs charging method and system |
| CN109544710A (en) * | 2018-11-22 | 2019-03-29 | 广州市埃特斯通讯设备有限公司 | A kind of intelligent road side cellular system |
| CN109600363B (en) * | 2018-11-28 | 2020-01-21 | 南京财经大学 | Internet of things terminal network portrait and abnormal network access behavior detection method |
| CN110071754B (en) * | 2019-04-13 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | UAV measurement and control link interruption fault emergency processing method |
| CN110427010A (en) * | 2019-05-27 | 2019-11-08 | 苏州思卡信息系统有限公司 | A kind of vehicle-mounted OBU unusual condition warning system and method |
| CN110223403A (en) * | 2019-06-14 | 2019-09-10 | 北京聚利科技股份有限公司 | Vehicle charging method, device and system |
| CN110853160B (en) * | 2019-09-29 | 2022-01-18 | 广州市凌特电子有限公司 | Multi-dimensional recognition system and method for expressway lane |
| CN110853162A (en) * | 2019-10-28 | 2020-02-28 | 东南大学 | Working method of freeflow system for multiple lanes of highway |
| CN111047724B (en) * | 2019-11-11 | 2021-12-28 | 深圳市金溢科技股份有限公司 | Readable storage medium, path identification system, vehicle-mounted unit and transaction method |
| CN111416670B (en) * | 2020-02-25 | 2021-12-03 | 深圳成谷智能科技有限公司 | Method and device for solving adjacent lane interference of passing vehicles |
| CN112260771B (en) * | 2020-04-28 | 2022-12-16 | 广州市埃特斯通讯设备有限公司 | Interference information detection system for ETC |
| CN213122138U (en) * | 2020-07-20 | 2021-05-04 | 广州市凌特电子有限公司 | Detection system of electromagnetic interference source |
| CN113256825A (en) * | 2021-03-29 | 2021-08-13 | 北京云星宇交通科技股份有限公司 | Method and device for monitoring running state of ETC road side unit |
| CN113362483B (en) * | 2021-06-03 | 2023-07-07 | 星觅(上海)科技有限公司 | Method, device, equipment and storage medium for detecting vehicle abnormality |
| CN113472605A (en) * | 2021-06-03 | 2021-10-01 | 山西省交通科技研发有限公司 | On-vehicle ETC agreement monitoring device of highway |
-
2021
- 2021-11-30 CN CN202111449572.4A patent/CN114202817B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574540A (en) * | 2014-12-24 | 2015-04-29 | 北京速通科技有限公司 | Electronic toll collection system and method |
| CN110288839A (en) * | 2019-07-30 | 2019-09-27 | 成都安杰联科技有限公司 | A kind of device and method of the detection positioning of ETC interference unit |
| CN112738784A (en) * | 2020-12-29 | 2021-04-30 | 北京万集智能网联技术有限公司 | Communication control method, communication control device, vehicle-mounted unit, device and readable storage medium |
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