CN106408050B - Electronic tag communication method for ETC system, road side unit and ETC system - Google Patents
Electronic tag communication method for ETC system, road side unit and ETC system Download PDFInfo
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- CN106408050B CN106408050B CN201610851055.2A CN201610851055A CN106408050B CN 106408050 B CN106408050 B CN 106408050B CN 201610851055 A CN201610851055 A CN 201610851055A CN 106408050 B CN106408050 B CN 106408050B
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- 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
- G06K17/0032—Apparatus for automatic testing and analysing marked record carriers, used for examinations of the multiple choice answer type
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- G—PHYSICS
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- 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
- 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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Abstract
The embodiment of the invention discloses an electronic tag communication method for an ETC system, a road side unit and the ETC system, which are applied to the field of intelligent transportation. The method comprises the following steps: acquiring electronic tag information and coordinates; judging whether matching information exists in an electronic tag database or not according to the electronic tag information; and if so, classifying the electronic tags according to the matching information and the coordinates. The embodiment of the invention also provides a road side unit. The invention can classify the electronic tags with different performances by adopting different standards or modes, and improves the working efficiency of the ETC system on the premise of ensuring the normal work of the ETC system.
Description
Technical Field
The invention relates to the field of intelligent transportation, in particular to an electronic tag communication method for an ETC system, a road side unit and the ETC system.
Background
In the field of intelligent transportation, along with the holding capacity of vehicles is increasing, more and more vehicles begin to use an Electronic Toll Collection (ETC) system, the demand of an ETC lane is also increasing, and the requirements of people on the utilization rate, the traffic effect and the speed index of an ETC lane mode are higher and higher.
The ETC system is a common Road and bridge toll collection mode at present, and utilizes a computer networking technology to carry out background settlement processing with a bank through microwave special short-range communication between a vehicle-mounted Unit (electronic tag) arranged on a vehicle windshield and a Road Side Unit (RSU) on an ETC lane of a toll station, so that the aim of paying the Road and bridge fees of vehicles passing through the Road and bridge toll station without parking is fulfilled. In the prior art, when the RSU on the ETC lane is applied to a single lane or a multi-lane, the processing of the same electronic tag is greatly affected by environmental factors, and can only be processed according to a uniform standard.
The existing ETC system can only process the electronic tags according to the uniform identification standard, but the performance of the electronic tags produced by different manufacturers or batches has certain difference, so that the strength of the interactive signals between the RSU and the electronic tags is different. For electronic tags of different manufacturers or batches, the RSU is processed according to a unified standard, the electronic tags with weak performance may not meet processing conditions, the electronic tags with strong performance may also improve processing efficiency, and the ETC system is not perfect.
Disclosure of Invention
In view of the above, the present invention provides an electronic tag communication method for an ETC system and a related device, which can achieve the purpose of classifying electronic tags according to matching information of the electronic tags.
The invention provides an electronic tag communication method for an ETC system in a first aspect, which comprises the following steps: acquiring electronic tag information and coordinates; judging whether matching information exists in an electronic tag database or not according to the electronic tag information; and if so, classifying the electronic tags according to the matching information and the coordinates.
With reference to the first aspect of the present invention, in a first implementation manner of the first aspect of the present invention, the matching information includes: positioning accuracy of the electronic tag within a preset range; the classifying the electronic tags according to the matching information and the coordinates specifically comprises the following steps: and judging whether the positioning precision of the electronic tag in the preset range meets the positioning precision of the matching information, if so, allowing the transaction, and if not, forbidding the transaction.
With reference to the first implementation manner of the first aspect of the present invention, in a second implementation manner of the first aspect of the present invention, the electronic tag information includes an electronic tag ID, and the matching information is established according to the electronic tag ID; the judging whether the matching information exists in the electronic tag database according to the electronic tag information comprises the following steps: and judging whether the matching information of the electronic tag ID exists in an electronic tag database according to the electronic tag ID.
With reference to the second implementation manner of the first aspect of the present invention, in a third implementation manner of the first aspect of the present invention, the electronic tag ID corresponds to manufacturer information of the electronic tag; the matching information is established according to information of different manufacturers.
With reference to any one implementation manner of the first aspect to the third implementation manner of the first aspect of the present invention, in a fourth implementation manner of the first aspect of the embodiment of the present invention, the positioning accuracy is a coordinate mean value and/or a coordinate error value and/or a coordinate mean square error value; the specific step of judging whether the positioning accuracy of the electronic tag in the preset range meets the positioning accuracy of the matching information is as follows: and judging whether the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the electronic tag in the preset range is not more than the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the matching information.
With reference to the fourth implementation manner of the first aspect of the present invention, in a fifth implementation manner of the first aspect of the present invention, the preset ranges have multiple preset ranges, and different preset ranges have specific coordinate mean values and/or coordinate error values and/or coordinate mean variance values.
With reference to any one implementation manner of the first aspect to the third implementation manner of the first aspect, in a sixth implementation manner of the first aspect of the present invention, the method further includes: and updating the electronic tag database according to the electronic tag information and the coordinates.
A second aspect of the present invention provides a roadside unit comprising: the acquisition module is used for acquiring the electronic tag information and the coordinates; the judging module is used for judging whether matching information exists in the electronic tag database according to the electronic tag information; and the processing module is used for classifying the electronic tags according to the matching information under the condition that the matching information exists.
With reference to the second aspect of the present invention, in a first implementation manner of the second aspect of the present invention, the matching information includes: positioning accuracy of the electronic tag within a preset range; the processing module comprises: and the first judgment unit is used for judging whether the positioning precision of the electronic tag in the preset range meets the positioning precision of the matching information, if so, the transaction is allowed, and if not, the transaction is forbidden.
With reference to the first implementation manner of the second aspect of the present invention, in a second implementation manner of the second aspect of the present invention, the electronic tag information includes an electronic tag ID, and the matching information is established according to the electronic tag ID; the judging module comprises: and the second judging unit is used for judging whether the matching information of the electronic tag ID exists in the electronic tag database according to the electronic tag ID.
With reference to the first implementation manner of the second aspect of the present invention, in the first implementation manner of the second aspect of the present invention, the positioning accuracy is a coordinate mean value and/or a coordinate error value and/or a coordinate mean variance value; the preset range is provided with a plurality of ranges, and different preset ranges have specific coordinate mean values and/or coordinate error values and/or coordinate mean square deviation values.
With reference to any implementation manner of the second aspect to the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect of the embodiment of the present invention, the roadside unit further includes: and the updating module is used for updating the electronic tag database according to the electronic tag information and the coordinates.
A third aspect of an embodiment of the present invention provides an ETC system, which includes an electronic tag and a roadside unit according to any one of the fourth implementation manners of the second aspect to the second aspect of the present invention.
According to the technical scheme, the invention has the following advantages:
according to the technical scheme, the electronic tag information and the coordinates are obtained; judging whether matching information exists in an electronic tag database or not according to the electronic tag information; and if so, classifying the electronic tags according to the matching information. Thereby realize adopting different standards or modes to handle electronic tags of different performance, under the prerequisite of guaranteeing ETC system normal work, promote ETC system's work efficiency.
Drawings
FIG. 1 is a diagram illustrating a network architecture according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of an electronic tag communication method for an ETC system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another embodiment of an electronic tag communication method for an ETC system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of phase angle formation according to an embodiment of the present invention;
fig. 5 is a schematic diagram of another embodiment of an electronic tag communication method for an ETC system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another embodiment of an electronic tag communication method for an ETC system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of one embodiment of a roadside unit in an embodiment of the present invention;
FIG. 8 is a schematic diagram of another embodiment of a roadside unit in an embodiment of the present invention;
FIG. 9 is a schematic diagram of another embodiment of a roadside unit in an embodiment of the present invention;
fig. 10 is a schematic diagram of another embodiment of the roadside unit in the embodiment of the invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all of the embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention can be applied to a network architecture as shown in fig. 1, in the ETC system framework, a background database stores a large amount of information of vehicles, when the vehicles pass through an ETC toll station, an RSU senses an electronic tag on the vehicle, a Dedicated Short Range Communication (DSRC) channel is established between the RSU and the electronic tag, and the RSU and the electronic tag perform information interaction to realize the identification of the electronic tag by the RSU.
The RSU consists of a high-gain directional beam control read-write antenna and a radio frequency controller. The high-gain directional beam control read-write antenna is a microwave transceiver module and is responsible for transmitting/receiving, modulating/demodulating, coding/decoding, encrypting/decrypting signals and data; the radio frequency controller is a module for controlling data transmission and reception and processing information transmission and reception to an upper computer. The ETC system is installed at the roadside, adopts DSRC technology to communicate with an electronic tag, and realizes vehicle identification and electronic toll collection without stopping the vehicle during the vehicle running.
The electronic tag is a microwave device which communicates with the RSU by adopting DSRC technology. In an ETC system, an electronic tag establishes a microwave communication link with an RSU by adopting a DSRC technology, and realizes vehicle identity recognition and electronic fee deduction without stopping the vehicle during the vehicle running.
In the embodiment of the invention, a Road Side Unit (RSU) acquires electronic tag information and coordinates; judging whether matching information exists in an electronic tag database or not according to the electronic tag information; and if so, classifying the electronic tags according to the matching information and the coordinates. The RSU identifies the electronic tags with different positioning accuracy according to the matching information aiming at the electronic tags produced by different manufacturers, so that the classification processing of each passing electronic tag is realized.
For convenience of understanding, a specific flow in the embodiment of the present invention is described below, and referring to fig. 2, an embodiment of the electronic tag communication method for the ETC system in the embodiment of the present invention includes:
201. and acquiring the electronic tag information and the coordinates.
In this embodiment, when the electronic tag enters the identification range of the RSU, the RSU can search for the electronic tag within the identification range; the RSU receives information fed back by the electronic tag; and the RSU acquires the electronic tag information and the coordinates according to the information fed back by the electronic tag. In the communication process of the RSU and the electronic tag, interaction is carried out for multiple times in a short time, the electronic tag information and the coordinates can be obtained every time, and the positioning accuracy can be calculated according to the obtained coordinates.
It should be noted that the electronic tag information may include phase information of the electronic tag and a height of the electronic tag, and may also include manufacturer information of the electronic tag, and the like, which is not limited herein.
202. And judging whether the matching information exists in the electronic tag database according to the electronic tag information, if so, executing step 204, and if not, executing step 203.
In this embodiment, the RSU compares the electronic tag information with the electronic tag information in the electronic tag database to determine whether the electronic tag has matching information.
203. Other processes are performed.
In this embodiment, if the electronic tag information is not matched with the electronic tag database information, other operations may be performed.
204. And classifying the electronic tags according to the matching information.
In this embodiment, the RSU determines information matching with the electronic tag, and the RSU selects to classify the electronic tag according to the difference of the matching information.
In the embodiment, the RSU acquires the electronic tag information and the coordinates, and judges whether matching information exists in the electronic tag database according to the electronic tag information; and if so, classifying the electronic tags according to the matching information and the coordinates. And the RSU classifies the electronic tags according to different standards or modes according to different matching information of the electronic tags.
Referring to fig. 3, another embodiment of the electronic tag communication method for the ETC system according to the embodiment of the present invention includes:
301. and acquiring the electronic tag information and the coordinates.
302. And judging whether the matching information exists in the electronic tag database according to the electronic tag information, if so, executing step 304, and if not, executing step 303.
303. Other processes are performed.
304. And judging whether the positioning precision of the electronic tag in the preset range meets the positioning precision of the matching information, if so, executing step 305, and if not, executing step 306.
There are two calculation methods for obtaining the coordinates of the electronic tag, the first calculation method calculates the specific coordinate values of the electronic tag according to the following formula:
y＝h*tan(θ+α)；
values of α, β, θ, and h in the formula are shown in fig. 4, a A, B, C point in fig. 4 is an electronic tag positioning coordinate point, the electronic tag is at a C point, and the electronic tag may be at an a point or a B point, or at other points, which is not limited herein.
The second calculation method calculates the specific coordinate value of the electronic tag according to the following formula:
values of α, β, θ, and h in the formula are shown in fig. 4, a A, B, C point in fig. 4 is an electronic tag positioning coordinate point, the electronic tag is at a C point, and the electronic tag may be at an a point or a B point, or at other points, which is not limited herein.
And the RSU judges whether the positioning precision of the electronic tag is within the positioning precision range of the matching information according to the acquired coordinates.
305. The transaction is allowed.
The RSU performs transactions with the electronic tag.
306. The transaction is prohibited.
The RSU does not transact with the electronic tag.
In the embodiment, the RSU acquires the electronic tag information and the coordinates, and judges whether matching information exists in the electronic tag database according to the electronic tag information; if the matching information exists in the range, whether the positioning precision of the electronic tag meets the positioning precision of the matching information in the preset range is judged, if yes, the transaction is allowed, and if not, the transaction is forbidden. And the RSU judges whether the positioning precision of the matching information is met or not according to the positioning precision of the electronic tag, and determines whether to perform transaction with the electronic tag or not. A method for judging whether to trade is provided, and the realizability of trading is increased. The corresponding electronic tag transaction range can be controlled by setting the positioning precision within the preset range, the electronic tag model with poor signal quality is positioned in a rough manner, and the electronic tag signal with high signal quality is positioned in an accurate manner, so that each electronic tag passing through the lane can be quickly positioned, and the transaction is completed.
Referring to fig. 5, another embodiment of the electronic tag communication method for the ETC system according to the embodiment of the present invention includes:
501. the RSU sends the beacon service table BST to the electronic tag a preset number of times.
In this embodiment, the RSU searches for the electronic tag within the identification range, and the RSU sends a Beacon Service Table (BST) of a preset number of times to the electronic tag, where the preset number of times is determined by a system configuration file, and when the configured receiving time is set to 100MS, if 15MS is required for retransmission each time, 100/15 is 6.666, the preset number of times is 6, and if 20MS is required for retransmission each time, 100/20 is 5, and the preset number of times is 5; similarly, when the configured reception time is set to 200ms, 15ms is required for each retransmission, that is, 200/15 is 13.333, the preset number of times is 13, and an integer part is adopted. The details are not limited herein.
502. And the RSU receives the vehicle service table VST fed back by the electronic tag for preset times.
In this embodiment, the RSU receives a Vehicle Service Table (VST) fed back by the electronic tag.
503. The RSU acquires electronic tag information according to the VST, wherein the electronic tag information comprises phase information of the electronic tag and the height of the electronic tag.
In this embodiment, after receiving the VST for the preset number of times, the RSU obtains the required electronic tag information from the VST, where the electronic tag information includes the phase information of the electronic tag, the height of the electronic tag, and the manufacturer information of the electronic tag, and the specific details are not limited herein.
504. The RSU converts the phase information of the electronic tag into corresponding lateral and longitudinal angles.
In this embodiment, the RSU converts the phase information of the electronic tag into a transverse angle α and a longitudinal angle β in a preset coordinate system, where the range of the preset coordinate system includes-1.8 m < X <1.8 m, and 0m < Y <20 m.
505. And the RSU acquires the height difference between the RSU and the electronic tag according to the height of the electronic tag and the preset RSU installation height.
In this embodiment, the RSU subtracts the height of the electronic tag from the installation height of the RSU to obtain a height difference h between the RSU and the electronic tag.
506. And the RSU acquires the positioning coordinate of the electronic tag according to the transverse angle, the longitudinal angle, the height difference and the preset RSU installation angle.
In this embodiment, the RSU substitutes the transverse angle α, the longitudinal angle β, the height difference h, and the RSU installation angle θ of the electronic tag into a formula to calculate the coordinates of the electronic tag.
In this embodiment, the RSU may also bring the obtained coordinates of the electronic tag into a formula to perform iterative computation, which is an unnecessary process and may be selectively implemented in practical applications.
507. The RSU compares the tag information with the tag database information.
In this embodiment, the RSU compares the obtained electronic tag information with the electronic tag database information. The electronic tag information comprises an electronic tag ID, the electronic tag ID corresponds to manufacturer information of the electronic tag, and the electronic tag database information is established according to different manufacturer information. The storage format of the electronic tag database is as follows:
OBU_ID+DEVICEID+(X1Y1)+(T1)+(avil1)+(X2Y2)+(T2)+(avil2)
+(X3Y3)+(T3)+(avil3)+…+(XnYn)+(Tn)+(aviln)；
the OBU _ ID represents the tag ID numbers of different manufacturers for producing the electronic tags;
DEVICEID represents a search device ID number belonging to the own lane;
(XnYn) Coordinates indicating the nth electronic tag belonging to the OBU _ ID;
(Tn) Indicating the time for recording the coordinates of the nth electronic tag of the OBU _ ID;
(aviln) A validity flag bit representing the coordinate of the nth electronic tag belonging to the OBU _ ID;
n represents the number of electronic tag coordinates belonging to the OBU _ ID.
508. The RSU determines whether there is matching information in the electronic tag database according to the electronic tag information, if so, performs step 509, and if not, performs step 510.
And the RSU judges whether the classification information of the electronic tag ID exists in an electronic tag database according to the electronic tag information, wherein the electronic tag database comprises matching information established according to the electronic tag ID.
509. The RSU determines that the electronic tag information matches the electronic tag database information.
In this embodiment, after the RSU determines that the electronic tag information matches the electronic tag database information, the RSU classifies the electronic tag information according to the acquired coordinates according to a preset Y-axis region (i.e., a distance between the RSUs along the lane direction), and presets the Y-axis region: y is more than 0m and less than or equal to 3 m, Y is more than 3 m and less than or equal to 7 m, Y is more than 7 m and less than or equal to 11 m, Y is more than 11 m and less than or equal to 15m, and Y is more than 15m and less than or equal to 20 m; the RSU judges whether the electronic tag information meets the positioning precision in the preset Y-axis area, if so, the RSU places the electronic tag information in a trading-allowed flag bit and updates an electronic tag database; and if not, the RSU places the electronic tag information in the transaction prohibiting flag bit and updates the electronic tag database. The updating of the electronic tag database is a process of collecting and counting the electronic tag information and the coordinates, and the electronic tag positioning accuracy of each manufacturer is adaptively adjusted according to the counting result, and the whole adjusting process is a process of continuously correcting the electronic tag positioning accuracy. The RSU collects and stores all the passing electronic tag information, the background classifies the passing electronic tag information, namely, a manufacturer queue is established according to different manufacturer information, then the electronic tag coordinates of each manufacturer are calculated and counted to obtain the positioning accuracy, and coordinates which obviously do not meet the requirements can be removed in the counting process, for example, the positioning accuracy is obviously different from other coordinates.
It should be noted that the preset Y-axis region may also be divided in other ways, and is not limited herein. The positioning accuracy may be measured by using a coordinate mean value and/or a coordinate error value and/or a coordinate mean square deviation value, and the RSU determines whether the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the electronic tag in a preset range is not greater than the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the matching information, where the preset range is multiple, and is not limited herein.
510. The RSU determines that the electronic tag information does not match the electronic tag database information.
In this embodiment, the RSU determines that the electronic tag information is not matched with the electronic tag database information, the RSU creates a new database about the electronic tag, collects and counts the electronic tag data belonging to the electronic tag category (for example, manufacturer), automatically generates or manually sets the positioning accuracy, and processes the vehicle on which the electronic tag is installed when the vehicle passes through the ETC system. The electronic tag information statistics process of this step is the same as that of step 509.
511. And the RSU selects the positioning precision corresponding to the manufacturer to which the electronic tag belongs to carry out classification processing.
And after the RSU confirms the manufacturer of the electronic tag, judging whether the positioning precision of the electronic tag accords with the positioning precision stored in the electronic tag database.
In this embodiment, calculation statistics is carried out to the positioning accuracy through the electronic tags to each producer model, the electronic tags of the different positioning accuracy who produces different producers adopts different standards to handle, realize the locate mode of extensive formula or accurate formula, pass through extensive formula location to the producer electronic tags model that the signal quality is poor, carry out accurate formula location to the electronic tags of the producer that the signal quality is high, thereby realize that every electronic tags through this lane can both fix a position fast, thereby accomplish the transaction, under the prerequisite of guaranteeing ETC system normal work, promote the work efficiency of ETC system.
For ease of understanding, the present embodiment is described below with reference to specific application scenarios:
a vehicle with an electronic tag enters the identification range of the RSU, the electronic tag is produced by a manufacturer A, and the serial number of the electronic tag is GEN 0015. The RSU detects the electronic tag numbered GEN0015, transmits the beacon service list BST 5 times to the electronic tag, and receives the vehicle service list VST 5 times fed back by the OBU.
It should be noted that the number of times of transmission is determined by the system file, and may be set differently, and the number of times of transmission in this embodiment is 5. For convenience of understanding, GEN0015 described in this and subsequent embodiments is an electronic tag numbered GEN 0015.
The RSU obtains electronic tag information and coordinates of GEN0015 according to VST received for 5 times, the RSU calculates the positioning accuracy of the electronic tag according to the obtained 5-time coordinates, namely, the coordinate mean value and/or the coordinate error value and/or the coordinate mean square difference value of the electronic tag are calculated, the electronic tag of GEN0015 is compared with an electronic tag database, a manufacturer matched with GEN0015 is determined, the manufacturer is marked with A, the corresponding positioning accuracy of the manufacturer A is obtained, the RSU carries out classification processing on GEN0015 by adopting the positioning accuracy, the data information of the manufacturer A of the electronic tag database is updated after the processing, and it needs to be stated that the updating of the electronic tag database can continuously correct the positioning accuracy to enable the positioning accuracy to be in line with the positioning accuracy of most electronic tags of the manufacturer A. If the positioning accuracy information of the manufacturer A does not exist in the electronic tag database, a data information base about the manufacturer A is newly built in the electronic tag database, the positioning accuracy is automatically generated or manually set after the electronic tag data of the manufacturer A are collected and counted, and the vehicles passing through the ETC system are classified.
Referring to fig. 6, another embodiment of the electronic tag communication method for the ETC system according to the embodiment of the present invention includes:
601. and acquiring the electronic tag information and the coordinates.
602. And judging whether the matching information exists in the electronic tag database according to the electronic tag information, if so, executing step 204, and if not, executing step 203.
603. Other processes are performed.
604. And classifying the electronic tags according to the matching information.
605. The RSU acquires the lateral X-coordinate of the electronic tag.
In this embodiment, the RSU extracts the lateral X coordinate from the electronic tag coordinates.
606. The RSU determines whether the horizontal X coordinate of the electronic tag has been preprocessed, if not, step 607 is executed, and if yes, step 608 is executed.
In this embodiment, the RSU determines whether the acquired lateral X coordinate of the electronic tag is preprocessed, and the preprocessing process specifically includes a process in which the system screens out effective electronic tag information.
607. Other processes are performed.
In this embodiment, if the transverse X coordinate of the electronic tag is not preprocessed, other operations may be performed.
608. The RSU determines whether the lateral X coordinate is within a preset range of the first lane, if yes, step 609 is executed, and if no, step 610 is executed.
In this embodiment, the RSU determines whether the horizontal X coordinate of the electronic tag meets the requirement: -1.8 meters < X <1.8 meters.
609. The RSU determines that the electronic tag is in the first lane.
In this embodiment, the RSU determines that the electronic tag is on the first lane.
610. The RSU determines that the electronic tag is in the second lane.
In this embodiment, the RSU determines that the electronic tag is in the second lane.
In the embodiment, the RSU acquires the electronic tag information and the coordinates, and judges whether matching information exists in the electronic tag database according to the electronic tag information; if yes, classifying the electronic tags according to the matching information; after the RSU acquires the information and the coordinates of the electronic tag, the RSU acquires the transverse X coordinates of the electronic tag, the RSU judges whether the transverse X coordinates are preprocessed or not, if not, other operations are executed, if yes, the RSU judges whether the transverse X coordinates are in the preset range of the first lane or not, and if yes, the RSU determines that the electronic tag is in the first lane; if not, the RSU determines that the electronic tag is in the second lane. The RSU adopts different standards for the electronic tags with different positioning accuracy produced by different manufacturers according to different manufacturers matched with the electronic tags, so that the classification processing of each passing electronic tag is realized. And secondly, the judgment of the lane to which the electronic tag belongs is added, so that the RSU can classify and process the electronic tags of multiple lanes.
In the above description of the electronic tag communication method for the ETC system in the embodiment of the present invention, the roadside unit in the embodiment of the present invention is described below with reference to fig. 7, and the roadside unit in the embodiment of the present invention includes:
an obtaining module 701, configured to obtain electronic tag information and coordinates;
a judging module 702, configured to judge whether matching information exists in the electronic tag database according to the electronic tag information;
and the processing module 703 is configured to perform classification processing on the electronic tags according to the matching information.
In this embodiment, the obtaining module 701 obtains the electronic tag information and the coordinates, and the determining module 702 determines whether matching information exists in the electronic tag database according to the electronic tag information; if the matching information exists, the processing module 703 classifies the electronic tag according to the matching information. The RSU adopts different standards for the electronic tags with different positioning accuracy produced by different manufacturers according to different manufacturers matched with the electronic tags, so that classification processing of each passing electronic tag is realized.
Referring to fig. 8, another embodiment of the roadside unit in the embodiment of the present invention includes:
an obtaining module 801, configured to obtain electronic tag information and coordinates;
a judging module 802, configured to judge whether matching information exists in the electronic tag database according to the electronic tag information;
the processing module 803 is configured to locate the electronic tag according to the location precision corresponding to the matching information.
Wherein, the processing module 803 may further include:
the first determining unit 8031 is configured to determine whether the positioning accuracy of the electronic tag in the preset range meets the positioning accuracy of the matching information, allow the transaction if the positioning accuracy of the electronic tag meets the positioning accuracy of the matching information, and prohibit the transaction if the positioning accuracy of the electronic tag does not meet the positioning accuracy of the matching information.
In this embodiment, the obtaining module 801 obtains the electronic tag information and the coordinates, and the determining module 802 determines whether matching information exists in the electronic tag database according to the electronic tag information; if the matching information exists, the processing module 803 classifies the electronic tags according to the matching information. The RSU adopts different standards for the electronic tags with different positioning accuracy produced by different manufacturers according to different manufacturers matched with the electronic tags, so that classification processing of each passing electronic tag is realized.
Referring to fig. 9, another embodiment of the roadside unit in the embodiment of the present invention includes:
an obtaining module 901, configured to obtain electronic tag information and coordinates;
a judging module 902, configured to judge whether matching information exists in the electronic tag database according to the electronic tag information;
and the processing module 903 is used for classifying the electronic tags according to the matching information if the electronic tags exist.
Wherein, the processing module 903 may further include:
a second judging unit 9031, configured to judge whether matching information of the electronic tag ID exists in the electronic tag database according to the electronic tag ID.
In this embodiment, the obtaining module 901 obtains the electronic tag information and the coordinates, and the determining module 902 determines whether matching information exists in the electronic tag database according to the electronic tag information; if the matching information exists, the processing module 903 classifies the electronic tags according to the matching information. The RSU adopts different standards for the electronic tags with different positioning accuracy produced by different manufacturers according to different manufacturers matched with the electronic tags, so that classification processing of each passing electronic tag is realized.
Referring to fig. 10, another embodiment of the roadside unit in the embodiment of the invention includes:
an obtaining module 1001 configured to obtain electronic tag information;
the judging module 1002 is configured to judge whether matching information exists in the electronic tag database according to the electronic tag information;
and if the matching information exists, the processing module 1003 is configured to locate the electronic tag according to the location accuracy corresponding to the matching information.
The roadside unit further includes: the updating module 1004 is configured to update the electronic tag database according to the electronic tag information.
In this embodiment, the obtaining module 1001 obtains the electronic tag information and the coordinates, and the determining module 1002 determines whether matching information exists in the electronic tag database according to the electronic tag information; if the matching information exists, the processing module 1003 classifies the electronic tags according to the matching information. The RSU adopts different standards for the electronic tags with different positioning accuracy produced by different manufacturers according to different manufacturers matched with the electronic tags, so that classification processing of each passing electronic tag is realized.
The embodiment of the invention also provides an ETC system, which comprises an electronic tag, an RSU and other configuration facilities, and the specific working mode of the ETC system can refer to the above embodiment. This ETC system is through counting up the electronic tags of different types and classifying, adopts different modes or standard to handle corresponding electronic tags to the realization promotes the work efficiency of ETC system under the prerequisite of guaranteeing that ETC system normally works.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electronic tag communication method for an ETC system, comprising:
acquiring electronic tag information and coordinates, and calculating positioning accuracy according to the acquired coordinates;
judging whether matching information exists in an electronic tag database or not according to the electronic tag information, wherein the electronic tag information comprises an electronic tag ID (identity), the electronic tag ID corresponds to manufacturer information of an electronic tag, and the matching information is established according to the electronic tag ID;
if yes, classifying the electronic tags according to the matching information and the coordinates;
the matching information includes: and the positioning precision of the electronic tag within a preset range.
2. The method of claim 1,
the classifying the electronic tags according to the matching information and the coordinates specifically comprises the following steps:
and judging whether the positioning precision of the electronic tag in the preset range meets the positioning precision of the matching information, if so, allowing the transaction, and if not, forbidding the transaction.
3. The method of claim 2,
the electronic tag information comprises an electronic tag ID, and the matching information is established according to the electronic tag ID;
the judging whether the matching information exists in the electronic tag database according to the electronic tag information comprises the following steps:
and judging whether the matching information of the electronic tag ID exists in an electronic tag database according to the electronic tag ID.
4. The method of claim 3,
the electronic tag ID corresponds to the manufacturer information of the electronic tag;
the matching information is established according to information of different manufacturers.
5. The method according to any one of claims 2 to 4, wherein the positioning accuracy is a coordinate mean and/or a coordinate error value and/or a coordinate mean variance value;
the specific step of judging whether the positioning accuracy of the electronic tag in the preset range meets the positioning accuracy of the matching information is as follows:
and judging whether the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the electronic tag in the preset range is not more than the coordinate mean value and/or the coordinate error value and/or the coordinate mean square deviation value of the matching information.
6. The method according to claim 5, wherein the predetermined range has a plurality of predetermined ranges, and different predetermined ranges have specific coordinate mean values and/or coordinate error values and/or coordinate mean variance values.
7. The method of any of claims 1 to 4, further comprising:
and updating the electronic tag database according to the electronic tag information and the coordinates.
8. A road side unit, comprising:
the acquisition module is used for acquiring the electronic tag information and the coordinates and calculating the positioning precision according to the acquired coordinates;
the judging module is used for judging whether matching information exists in an electronic tag database according to the electronic tag information, wherein the electronic tag information comprises an electronic tag ID (identity), the electronic tag ID corresponds to manufacturer information of an electronic tag, and the matching information is established according to the electronic tag ID;
the processing module is used for classifying the electronic tags according to the matching information under the condition that the matching information exists;
the matching information includes: and the positioning precision of the electronic tag within a preset range.
9. The road side unit of claim 8,
the processing module comprises:
and the first judgment unit is used for judging whether the positioning precision of the electronic tag in the preset range meets the positioning precision of the matching information, if so, the transaction is allowed, and if not, the transaction is forbidden.
10. An ETC system comprising an electronic tag, characterized by further comprising a roadside unit according to any one of claims 8 or 9.
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| CN111667595B (en) * | 2020-02-20 | 2022-05-17 | 中国银联股份有限公司 | ETC-based data processing method and ETC-based data processing system |
| CN112381958A (en) * | 2020-10-30 | 2021-02-19 | 荣洋 | ETC portal system state online monitoring method and system |
| CN113595575B (en) * | 2021-08-06 | 2023-04-18 | 广东翼卡车联网服务有限公司 | ETC information acquisition broadcasting system and method |
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