CN109389117B - Electronic license plate ambiguity implementation method - Google Patents
Electronic license plate ambiguity implementation method Download PDFInfo
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- CN109389117B CN109389117B CN201811141930.3A CN201811141930A CN109389117B CN 109389117 B CN109389117 B CN 109389117B CN 201811141930 A CN201811141930 A CN 201811141930A CN 109389117 B CN109389117 B CN 109389117B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
- G06V20/625—License plates
Abstract
The invention provides an ambiguous realization method of an electronic license plate, which comprises the following steps: s1, building a license plate recognition device at a path entrance, and sending the recognized license plate information to a cloud server of an automobile management system center; s2, setting a path identification station on the road section, setting a license plate recognition device on the path identification station, recognizing license plate information of passing vehicles through the license plate recognition device on the road section, and sending the license plate information and information of the path recognition station to a cloud server; s3, building a license plate recognition device at the path exit, and sending the recognized license plate information to a cloud server. The ambiguous realization method of the electronic license plate enables a road management system to determine the accurate route of the vehicle running in the road section according to the information stored in the cloud server, and further manages the vehicle in charge, detection, statistics and the like.
Description
Technical Field
The invention belongs to the technical field of electronic license plates, and particularly relates to an electronic license plate ambiguity realizing method.
Background
The traditional path recognition method is a license plate recognition method, wherein license plate snapshot systems are arranged at the entrance and the exit of a road (or the number of a license plate is manually input), license plate recognition systems are arranged at ambiguous road sections in a road network and are used as identification stations, the license plate information of a passing vehicle is uploaded to a background system, at the exit of an expressway, the license plate records of the passing vehicle passing the identification stations are inquired by the system midway, the entrance, the exit and the road sections are compared, the actual running route of the vehicle is judged, the vehicle toll is collected, and the license plate records are used as the basis for splitting and settlement. The license plate recognition method is a relatively accurate identification method, and can realize the non-stop path identification, thereby realizing the highway charging and the expense splitting based on an accurate path.
However, there is a problem in that multi-path discrimination is realized based on license plate recognition. Firstly, the license plate recognition accuracy is greatly influenced by rain and snow weather, high and low visibility and the like, the number plate is stained, and the authenticity of the number plate cannot be recognized, particularly, the problems of the unlicensed vehicle and the fake licensed vehicle cannot be solved, and management loopholes such as license plate replacement and fee evasion still exist. Secondly, the license plate identification needs to transmit the information of the license plate in real time, the transmitted data volume is large, the requirements on a transmission network and the data processing capacity are high, and the overall construction cost of the license plate identification system is high. In order to solve the problem in the license plate recognition method, a more appropriate method needs to be found to finish the accurate recognition of the vehicle information, so as to ensure the accurate judgment and management of the vehicle driving path.
Disclosure of Invention
In view of the above, the present invention is directed to an ambiguous implementation method for an electronic license plate, so as to solve the problem that the existing license plate is easily affected by external weather and cannot be identified.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an electronic license plate ambiguity realizing method comprises the following steps:
s1, building a license plate recognition device at a path entrance, and sending the recognized license plate information to a cloud server of an automobile management system center;
s2, setting a path identification station on the road section, setting a license plate recognition device on the path identification station, recognizing license plate information of passing vehicles through the license plate recognition device on the road section, and sending the license plate information and information of the path recognition station to a cloud server;
s3, building a license plate recognition device at the path exit, and sending the recognized license plate information to a cloud server.
Further, the license plate recognition device is a video and radio frequency all-in-one machine, and the video and radio frequency all-in-one machine comprises a video recognition unit and a radio frequency recognition unit;
the video recognition unit comprises a camera and an image processing module, license plate information of the automobile is captured through the camera, the image processing equipment processes the captured image, the license plate information is extracted, and the information is transmitted to the cloud server;
the radio frequency identification unit comprises an RFID radio frequency tag and an RFID tag reading and writing module, the unique RFID radio frequency tag is distributed to each driven-in automobile, the radio frequency tag is identified by the radio frequency module of the video and radio frequency all-in-one machine, and the vehicle information corresponding to the radio frequency tag is sent to the cloud server.
Further, in step S1, when the vehicle enters the entrance of the road segment, the video recognition unit and the radio frequency recognition unit simultaneously recognize the license plate, and if the recognition results are inconsistent, the vehicle is determined to be illegal, and the vehicle is identified and alarmed in the vehicle management system; and if the identification results are consistent or the identification results are legal, uploading the unique identification information, the lane number and the driving-in time of the vehicle to a cloud server.
Further, the cloud server establishes a storage area for each incoming vehicle, and the storage area corresponding to each vehicle comprises a vehicle unique identification information area, a reserved area and a path identification information area;
the vehicle unique identification information area is used for storing vehicle information of corresponding vehicles, including license plate information;
the route identification information area is used for storing information of route identification stations passed by the vehicle, and determining the running route of the vehicle by determining the information of the route identification stations passed by the vehicle;
further, in step S2, each path identification station includes a plurality of video/radio frequency integrated machines, and the cloud server needs to process the information after receiving the information uploaded by the path identification station, so as to ensure the uniqueness of the vehicle identified by each path identification station.
Further, the cloud server processes the information uploaded by the path identification station according to the following processing flow:
setting a word as a unit for storing path identification station information, storing the path identification station information in a low-order byte, storing 0x00 in a high-order byte, judging whether a path identification station information area is all 0 according to read storage area information of a vehicle in a cloud server, if the path identification station information area is all 0, proving that the path identification station is a first identification station for vehicle passing, writing the identification station coding information, if the identification station information area is not all 0, proving that the identification station is not the first identification station for vehicle passing, then judging whether the last non-0 byte information content is the identification station coding information, if so, proving that the identification station information is written by a read-write device, and the identification station information does not need to be written again, so as to avoid repeated writing; if the last non-0 byte information content is not the marker station coding information, the marker station information is proved not to be stored, the marker station coding information needs to be stored, firstly, whether the last non-0 byte is an odd-number byte is judged, if yes, the read non-0 byte and the marker station information are combined into 1 word, the current non-0 byte position is covered, and the marker station coding information of one word is written; if the last non-0 byte is not an odd-bit byte, i.e., is an even-bit, the station information is combined with 0x00 to form 1 word and written into the next word after the non-0 byte, thereby completing the writing of the station information.
Further, in step S3, the vehicle identification device at the exit of the road segment uploads the vehicle information, the lane number, and the exit time to the cloud server.
Compared with the prior art, the electronic license plate ambiguity realizing method has the following advantages:
the ambiguous realization method of the electronic license plate ensures that a road management system determines the accurate route of a vehicle running in a road section according to information stored in a cloud server, and further manages the vehicle such as charging, detection, statistics and the like; and after the vehicle information is completely applied, the information in the vehicle in the cloud server in the path section can be permanently stored or deleted according to the actual situation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a system for implementing an ambiguity resolution method of an electronic license plate according to an embodiment of the present invention;
fig. 2 is a layout diagram of a vehicle memory storage area in the cloud server according to the embodiment of the present invention;
fig. 3 is a routing diagram of a route identification information area according to an embodiment of the present invention;
fig. 4 is a flowchart of the cloud server storage path identifier station according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
An electronic license plate ambiguity realizing method comprises the following steps:
s1, building a license plate recognition device at a path entrance, and sending the recognized license plate information to a cloud server of an automobile management system center;
when entering the entrance of the route, when the vehicle enters the coverage area of the antenna of the electronic license plate recognition device, the electronic license plate recognition device recognizes the vehicle information in the electronic license plate, meanwhile, the video technology carries out video image capturing on the vehicle, if the results of the two-base recognition are inconsistent, the vehicle is judged to be illegal, and special identification and alarm are carried out on the vehicle in the vehicle management system. And after judging the legality of the vehicle, uploading the unique identification information, lane number, driving-in time and other initial point information of the vehicle to a cloud server of a road management system center.
S2, setting a path identification station on the road section, setting a license plate recognition device on the path identification station, recognizing license plate information of passing vehicles through the license plate recognition device on the road section, and sending the license plate information and information of the path recognition station to a cloud server;
in the driving process of the vehicle, when the vehicle enters the antenna coverage area of the road section identification station, the electronic license plate recognition device in the base station uploads the read information for identifying the vehicle identity and the identification information of the path identification station to an identification station information area in a storage area corresponding to the vehicle in the cloud server. In the driving process of the automobile, more than one identification device may recognize and upload information to the server in the same base station, so that after receiving the path information, the cloud server needs to perform early processing and then determine whether to store the path information, so as to ensure the uniqueness of the stored path identification station.
S3, building a license plate recognition device at the path exit, and sending the recognized license plate information to a cloud server.
As shown in fig. 1, the license plate recognition device is a video and radio frequency all-in-one machine, and the video and radio frequency all-in-one machine comprises a video recognition unit and a radio frequency recognition unit;
the video recognition unit comprises a camera and an image processing module, license plate information of the automobile is captured through the camera, the image processing equipment processes the captured image, the license plate information is extracted, and the information is transmitted to the cloud server;
the radio frequency identification unit comprises an RFID radio frequency tag and an RFID tag reading and writing module, the unique RFID radio frequency tag is distributed to each driven-in automobile, the radio frequency tag is identified by the radio frequency module of the video and radio frequency all-in-one machine, and the vehicle information corresponding to the radio frequency tag is sent to the cloud server.
In step S1, when the vehicle enters the entrance of the road segment, the video recognition unit and the radio frequency recognition unit simultaneously recognize the license plate, and if the recognition results are inconsistent, the vehicle is determined to be illegal, and the vehicle is identified and alarmed in the vehicle management system; and if the identification results are consistent or the identification results are legal, uploading the unique identification information, the lane number and the driving-in time of the vehicle to a cloud server.
The cloud server establishes a storage area for each incoming vehicle, and the storage area corresponding to each vehicle comprises a vehicle unique identification information area, a reserved area and a path identification information area;
the vehicle unique identification information area is used for storing vehicle information of corresponding vehicles, including license plate information;
the route identification information area is used for storing information of route identification stations passed by the vehicle, and determining the running route of the vehicle by determining the information of the route identification stations passed by the vehicle;
in step S2, each path identification station includes multiple video-radio frequency integrated machines, that is, multiple radio frequency read-write modules, and a vehicle may be identified by the multiple radio frequency read-write modules, and after receiving information uploaded by the path identification station, the cloud server needs to process the information to ensure the uniqueness of the vehicle identified by each path identification station.
The cloud server processes the information uploaded by the path identification station in the following processes:
setting a word as a unit for storing path identification station information, storing the path identification station information in a low-order byte, storing 0x00 in a high-order byte, judging whether a path identification station information area is all 0 according to read storage area information of a vehicle in a cloud server, if the path identification station information area is all 0, proving that the path identification station is a first identification station for vehicle passing, writing the identification station coding information, if the identification station information area is not all 0, proving that the identification station is not the first identification station for vehicle passing, then judging whether the last non-0 byte information content is the identification station coding information, if so, proving that the identification station information is written by a read-write device, and the identification station information does not need to be written again, so as to avoid repeated writing; if the last non-0 byte information content is not the marker station coding information, the marker station information is proved not to be stored, the marker station coding information needs to be stored, firstly, whether the last non-0 byte is an odd-number byte is judged, if yes, the read non-0 byte and the marker station information are combined into 1 word, the current non-0 byte position is covered, and the marker station coding information of one word is written; if the last non-0 byte is not an odd-bit byte, i.e., is an even-bit, the station information is combined with 0x00 to form 1 word and written into the next word after the non-0 byte, thereby completing the writing of the station information.
In step S3, the vehicle identification device at the exit of the road segment uploads the vehicle information, the lane number, and the departure time to the cloud server.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. An ambiguity realization method for an electronic license plate is characterized by comprising the following steps:
s1, building a license plate recognition device at a path entrance, and sending the recognized license plate information to a cloud server of an automobile management system center;
s2, setting a path identification station on the road section, setting a license plate recognition device on the path identification station, recognizing license plate information of passing vehicles through the license plate recognition device on the road section, and sending the license plate information and information of the path recognition station to a cloud server;
s3, building a license plate recognition device at the path exit, and sending the recognized license plate information to a cloud server;
the cloud server establishes a storage area for each incoming vehicle, and the storage area corresponding to each vehicle comprises a vehicle unique identification information area, a reserved area and a path identification information area;
the vehicle unique identification information area is used for storing vehicle information of corresponding vehicles, including license plate information;
the route identification information area is used for storing information of route identification stations passed by the vehicle, and determining the running route of the vehicle by determining the information of the route identification stations passed by the vehicle;
in step S2, each path identification station includes multiple video-radio frequency integrated machines, and after receiving information uploaded by the path identification station, the cloud server needs to process the information to ensure the uniqueness of the vehicle identified by each path identification station;
the cloud server processes the information uploaded by the path identification station in the following processes:
setting a word as a unit for storing path identification station information, storing the path identification station information in a low-order byte, storing 0x00 in a high-order byte, judging whether a path identification station information area is all 0 according to read storage area information of a vehicle in a cloud server, if the path identification station information area is all 0, proving that the path identification station is a first identification station for vehicle passing, writing the identification station coding information, if the identification station information area is not all 0, proving that the identification station is not the first identification station for vehicle passing, then judging whether the last non-0 byte information content is the identification station coding information, if so, proving that the identification station information is written by a read-write device, and the identification station information does not need to be written again, so as to avoid repeated writing; if the last non-0 byte information content is not the marker station coding information, the marker station information is proved not to be stored, the marker station coding information needs to be stored, firstly, whether the last non-0 byte is an odd-number byte is judged, if yes, the read non-0 byte and the marker station information are combined into 1 word, the current non-0 byte position is covered, and the marker station coding information of one word is written; if the last non-0 byte is not an odd-bit byte, i.e., is an even-bit, the station information is combined with 0x00 to form 1 word and written into the next word after the non-0 byte, thereby completing the writing of the station information.
2. The ambiguous realization method of electronic license plate according to claim 1, wherein: the license plate recognition device is a video and radio frequency integrated machine, and the video and radio frequency integrated machine comprises a video recognition unit and a radio frequency recognition unit;
the video recognition unit comprises a camera and an image processing module, license plate information of the automobile is captured through the camera, the image processing equipment processes the captured image, the license plate information is extracted, and the information is transmitted to the cloud server;
the radio frequency identification unit comprises an RFID radio frequency tag and an RFID tag reading and writing module, the unique RFID radio frequency tag is distributed to each driven-in automobile, the radio frequency tag is identified by the radio frequency module of the video and radio frequency all-in-one machine, and the vehicle information corresponding to the radio frequency tag is sent to the cloud server.
3. The ambiguous realization method of electronic license plate as claimed in claim 2, wherein: in step S1, when the vehicle enters the entrance of the road segment, the video recognition unit and the radio frequency recognition unit simultaneously recognize the license plate, and if the recognition results are inconsistent, the vehicle is determined to be illegal, and the vehicle is identified and alarmed in the vehicle management system; and if the identification results are consistent or the identification results are legal, uploading the unique identification information, the lane number and the driving-in time of the vehicle to a cloud server.
4. The ambiguous realization method of electronic license plate according to claim 1, wherein: in step S3, the vehicle identification device at the exit of the road segment uploads the vehicle information, the lane number, and the departure time to the cloud server.
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