CN103854319B - Data transmission system in electronic charging system without parking - Google Patents
Data transmission system in electronic charging system without parking Download PDFInfo
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- CN103854319B CN103854319B CN201210514978.0A CN201210514978A CN103854319B CN 103854319 B CN103854319 B CN 103854319B CN 201210514978 A CN201210514978 A CN 201210514978A CN 103854319 B CN103854319 B CN 103854319B
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Abstract
Embodiments provide a kind of ETC(Electronic Toll Collection, electronic charging system without parking) in roadside unit and data transmission system.This roadside unit specifically includes that DSRC communication unit, data processing unit and WLAN communication unit, WLAN communication unit, for being communicated with WLAN gateway or PC by WLAN protocol, the transaction results data sending over data processing unit are packaged according to WLAN protocol, and by WLAN protocol passage, the transaction results data after encapsulation are sent to WLAN gateway or PC.The embodiment of the present invention has DSRC agreement and two kinds of protocol communication functions of WLAN protocol by making roadside unit, make the actual size of roadside unit from the larger communication equipment being distributed in 50 meters of communications cable two ends, become the small communication devices that can concentrate in the range of 1 meter ruler cun, greatly reduce the laying of roadside unit and complexity is installed, so that roadside unit is easily applied in urban environment.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of ETC(Electronic Toll Collection, electricity
Sub-no-stop charging system) in roadside unit and data transmission system.
Background technology
ETC based on GB/T20851-2007 series standard promotes the most on a large scale.The whole nation has been built up at present
ETC track more than 2500, the vehicle carried electronic label issued is more than 3,000,000 sets.Vehicle carried electronic label is ETC system
Standard fitting, for being arranged on the front windshield of vehicle, when vehicle is by ETC track, vehicle carried electronic label and ETC car
On road install RSU(Roadside Unit, roadside unit) etc. device talk, be not required to parking and can complete vehicle toll.ETC
System improves traffic efficiency, and actual count result shows, present stage one ETC track traffic efficiency and five manual toll collections
Lane efficiency is suitable, and when vehicle carried electronic label issuing amount promotes further, the odds for effectiveness in ETC track will be brighter
Aobvious.
The protocol layer of GB GB/T20851-2007 series standard DSRC based on domestic independent intellectual property right
(Dedicated Short Range Communications, DSRC technology) technology.DSRC technology is with 5.8GHz
Frequency is as operating frequency.At the beginning of design, DSRC technology is mainly used in highway non-parking charge field, along with car
The circulation carrying electronic tag is increasing, and increasing vehicle has had DSRC communication capacity, and DSRC technology is from a high speed
Highway moves towards urban traffic control and has become as irreversible trend, and road conditions are reported, vehicle monitoring, congestion-pricing, and community is managed
Reason is all the major fields of the development of intelligent transportation in the future.
Laying and the Data Link Map of the DSRC roadside unit in traditional E TC track are as it is shown in figure 1, as it is shown in figure 1, passing
On system ETC track, it is necessary to be equipped with roadside unit, 50 meters of long cables, controller, track PC(personal computer, individual
Computer) and remote server.Owing to roadside unit is arranged on road, and controller and track PC are arranged in tollbooth
Portion, therefore needs 50 meters of long cables to carry out data transmission between roadside unit and controller.In Fig. 1, every track is required for configuration
One PC is as information transfer.DSRC roadside unit in ETC track shown in Fig. 1, it is possible to vehicle carried electronic label well
Complete ETC service, but when DSRC roadside unit is applied at urban environment, bigger construction difficulty can be produced owing to laying cable
Degree, the laying of DSRC roadside unit and the obstacle of installation maximum set up complexity exactly, and data storage and maintenance is with high costs, thus
It is unfavorable for that DSRC roadside unit is applied in urban environment.
Summary of the invention
The embodiment provides the roadside unit in a kind of ETC and data transmission system, to realize roadside unit
Easily apply in urban environment.
A kind of roadside unit in electronic charging system without parking ETC, including: DSRC communication unit, data processing unit
With WLAN(Wireless Local Area Networks, WLAN) communication unit,
Described DSRC communication unit, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement, is connect
Receive the vehicle data in the ETC process of exchange that vehicle carried electronic label is sent by DSRC protocol channel, described vehicle data is entered
After row resolves, described vehicle data is sent to data processing unit；The transaction knot that described data processing unit is sended over
Really data are packaged according to DSRC agreement, and by DSRC protocol channel, the transaction results data after encapsulation are sent to described car
Carry electronic tag；
Described data processing unit, for receiving the vehicle data that described DSRC communication unit sends over, when this car
When data do not have encrypted, described vehicle data is carried out ETC trading processing, it is thus achieved that transaction results data, this transaction is tied
Really data are sent to DSRC communication unit and WLAN communication unit；
Described WLAN communication unit, for communicating with WLAN gateway or PC by WLAN protocol, to described number
The transaction results data sended over according to processing unit are packaged according to WLAN protocol, the transaction results data after encapsulation are led to
Cross WLAN protocol passage and be sent to WLAN gateway or PC.
A kind of data transmission system in electronic charging system without parking ETC, including: described roadside unit and WLAN net
Pass, remote server；
Described WLAN gateway, for the transaction results number sent by roadside unit described in WLAN protocol channel reception
According to, described transaction results data are sent to remote server by WLAN protocol passage；
Described remote server, for the transaction results number sent by WLAN gateway described in WLAN protocol channel reception
According to, described vehicle data is resolved and stores.
A kind of data transmission system in electronic charging system without parking ETC, including: described roadside unit and WLAN net
Pass, controller, remote server；
Described WLAN gateway, is encrypted by key for sent by roadside unit described in WLAN protocol channel reception
After vehicle data, described vehicle data is sent to controller by WLAN protocol passage, by WLAN protocol channel reception
Transaction results data in the ETC process of exchange that described controller sends, then by WLAN protocol passage by described transaction results
Data are transmitted to roadside unit and remote server；
Described remote server, for the transaction results number sent by WLAN gateway described in WLAN protocol channel reception
According to, these transaction results data are stored；
Described controller, for the vehicle data sent by WLAN gateway described in WLAN protocol channel reception, to institute
State after vehicle data resolves, described vehicle data is decrypted, to described vehicle number according still further to the decruption key set
According to carrying out ETC trading processing, it is thus achieved that transaction results data, after described transaction results data being packaged according to WLAN protocol,
It is sent to described WLAN gateway by WLAN protocol passage.
The technical scheme provided by embodiments of the invention described above is it can be seen that the embodiment of the present invention is by making roadside unit
Having DSRC agreement and two kinds of protocol communication functions of WLAN protocol, roadside unit is by WLAN protocol and WLAN protocol gateway or PC
Communicating, make the actual size of roadside unit from being distributed in the larger communication equipment at 50 meters of communications cable two ends, becoming can
To concentrate on the small communication devices in the range of 1 meter ruler cun, greatly reduce the laying of roadside unit and complexity is installed, thus
Roadside unit is made easily to apply in urban environment.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill of field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is laying and the Data Link Map of the DSRC roadside unit in ETC track of the prior art；
Fig. 2 is the structural representation of the roadside unit of the ETC system that the embodiment of the present invention one proposes；
The structural representation of the data transmission system in a kind of ETC system that Fig. 3 provides for the embodiment of the present invention two；
The structural representation of the data transmission system in a kind of ETC system that Fig. 4 provides for the embodiment of the present invention three；
The structural representation of the data transmission system in a kind of ETC system that Fig. 5 provides for the embodiment of the present invention four.
Detailed description of the invention
For ease of the understanding to the embodiment of the present invention, do as a example by several specific embodiments further below in conjunction with accompanying drawing
Explanation, and each embodiment is not intended that the restriction to the embodiment of the present invention.
Embodiment one
The laying of DSRC roadside unit for convenience, the hardware reducing data base and communications needs puts into, and carries
The level of security of high ETC system, the embodiment of the present invention makes roadside unit have DSRC agreement and the WLAN of compatible IEEE802.11
Two kinds of protocol communication functions of agreement use.Structural representation such as Fig. 2 institute of the roadside unit of the ETC system that this embodiment proposes
Show, including: DSRC communication unit 21, WLAN communication unit 22, data processing unit 23 and power supply unit 24.
Described DSRC communication unit 21, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement,
Receive the vehicle number in the ETC process of exchange according to DSRC protocol encapsulation that vehicle carried electronic label is sent by DSRC protocol channel
According to, after described vehicle data is resolved, described vehicle data is sent to data processing unit 23.Described data are processed
The transaction results data that unit 23 and WLAN communication unit 22 sends over are packaged according to DSRC agreement, by the friendship after encapsulation
Easily result data is sent to described vehicle carried electronic label by DSRC protocol channel.
Data processing unit 23, for receiving the vehicle data that described DSRC communication unit 21 sends over, when above-mentioned car
When data do not have encrypted, described vehicle data is carried out ETC trading processing, it is thus achieved that transaction results data, this transaction is tied
Really data are sent to DSRC communication unit 21 and WLAN communication unit 22.After above-mentioned vehicle data is encrypted by key, will
Above-mentioned vehicle data is transmitted to WLAN communication unit 22.
Described WLAN communication unit 22, for communicating with WLAN gateway, PC by WLAN protocol, to described data
The transaction results data that processing unit 23 sends over are packaged according to WLAN protocol, the transaction results data after encapsulation are led to
Cross WLAN protocol passage and be sent to WLAN gateway or PC.Vehicle after the encryption that described data processing unit 23 is sended over
Data are packaged according to WLAN protocol, and by WLAN protocol passage, the transaction results data after encapsulation are sent to WLAN net
Close.Receive the transaction results data in the ETC process of exchange that WLAN gateway is sent by WLAN protocol passage, to described transaction
After result data resolves, described transaction results data are sent to DSRC communication unit 21.
Described power supply unit 24, for being powered whole roadside unit, output DC voltage is to DSRC communication unit
The parts such as unit 21, WLAN communication unit 22 and data processing unit 23.This power supply unit 23 can by solar panel with
Accumulator realizes.
Above-mentioned roadside unit can be installed on portal frame, and vehicle passes through below portal frame.
Embodiment two
Based on the roadside unit shown in above-mentioned Fig. 2, the data transmission system in a kind of ETC system that this embodiment provides
Structural representation is as it is shown on figure 3, this embodiment is applied in the scene not being encrypted the vehicle data in ETC process of exchange
Under, including: roadside unit, WLAN gateway and remote server.
Described roadside unit, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement, is passed through
WLAN protocol communicates with WLAN gateway.Receive vehicle carried electronic label by DSRC protocol channel send according to DSRC agreement
Vehicle data in the ETC process of exchange of encapsulation, resolves described vehicle data.When above-mentioned vehicle data is the most encrypted
Time, described vehicle data is carried out ETC trading processing, it is thus achieved that transaction results data, these transaction results data are assisted according to DSRC
View is packaged, and by DSRC protocol channel, the transaction results data after encapsulation are sent to vehicle carried electronic label.Again by this friendship
Easily result data is packaged according to WLAN protocol, the transaction results data after encapsulation is sent to by WLAN protocol passage
WLAN gateway.Receive the command information that WLAN gateway is sent by WLAN protocol passage, this command information is resolved, then presses
After DSRC protocol encapsulation, it is sent to vehicle carried electronic label by DSRC protocol channel.Above-mentioned roadside unit can be installed in
On portal frame, vehicle passes through below portal frame.
Described WLAN gateway, is used for and described roadside unit, remote server wireless connections, by WLAN protocol and institute
State roadside unit, remote server communicates.The transaction results sent by roadside unit described in WLAN protocol channel reception
Described transaction results data are transmitted to remote server by WLAN protocol passage by data；By WLAN protocol channel reception
The command information that described remote server sends, is transmitted to roadside unit by WLAN protocol passage by described command information.
Described remote server, is used for and described WLAN gateway wireless connections, by WLAN protocol and described WLAN net
Pass communicates, and is arranged on the network management center of highway, is sent by WLAN gateway described in WLAN protocol channel reception
Transaction results data, described vehicle data is resolved and stores.When vehicle carried electronic label transmission is referred to by needs accordingly
When making information, after above-mentioned command information being packaged according to WLAN protocol, by WLAN protocol passage by above-mentioned command information
It is sent to described WLAN gateway.
Embodiment three
Based on the roadside unit shown in above-mentioned Fig. 2, the data transmission system in a kind of ETC system that this embodiment provides
Structural representation as shown in Figure 4, apply in the scene not being encrypted the vehicle data in ETC process of exchange by this embodiment
Under, including: roadside unit, PC.
Described roadside unit, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement, is passed through
WLAN protocol communicates with PC.Receive vehicle carried electronic label by DSRC protocol channel send according to DSRC protocol encapsulation
Vehicle data in ETC process of exchange, after described vehicle data is resolved, when this vehicle data does not has encrypted, right
Described vehicle data carries out ETC trading processing, it is thus achieved that transaction results data, these transaction results data is carried out according to DSRC agreement
Transaction results data after encapsulation are sent to vehicle carried electronic label by DSRC protocol channel by encapsulation.Again by this transaction results
Data are packaged according to WLAN protocol, and by WLAN protocol passage, the transaction results data after encapsulation are sent to PC.Above-mentioned
Roadside unit can be installed on portal frame, and vehicle passes through below portal frame.
Described PC, is used for and described roadside unit wireless connections, is led to described roadside unit by WLAN protocol
Letter, can be arranged in tollbooth.The transaction results data sent by roadside unit described in WLAN protocol channel reception, by institute
State transaction results data to store.
Embodiment four
Based on the roadside unit shown in above-mentioned Fig. 2, the data transmission system in a kind of ETC system that this embodiment provides
Structural representation as it is shown in figure 5, this embodiment is applied under the scene being encrypted the vehicle data in ETC process of exchange,
Including: roadside unit, WLAN gateway, controller and remote server.
Described roadside unit, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement, is passed through
WLAN protocol communicates with WLAN gateway.Receive vehicle carried electronic label by DSRC protocol channel send according to DSRC agreement
Vehicle data in the ETC process of exchange of encapsulation, after resolving described vehicle data.When above-mentioned vehicle data is by by close
After key encryption, this vehicle data is packaged according to WLAN protocol, by the vehicle data after encapsulation by WLAN protocol passage
It is sent to WLAN gateway.Receive in the ETC process of exchange from controller that WLAN gateway is sent by WLAN protocol passage
Described transaction results data are resolved, are packaged according still further to DSRC agreement by transaction results data, by the transaction after encapsulation
Result data is sent to vehicle carried electronic label by DSRC protocol channel.Receive what WLAN gateway was sent by WLAN protocol passage
From the command information of remote server, this command information is resolved, after DSRC protocol encapsulation, assisted by DSRC
Above-mentioned command information is sent to vehicle carried electronic label by view.Above-mentioned roadside unit can be installed on portal frame, and vehicle is from dragon
Pass through below door frame.
Described WLAN gateway, is used for and described roadside unit, controller, remote server wireless connections, passes through WLAN
Agreement communicates with described roadside unit, controller, remote server, can be arranged in tollbooth.Pass through WLAN protocol
The vehicle data that roadside unit described in channel reception sends, is sent to control by WLAN protocol passage by described vehicle data
Device.By the transaction results data in the ETC process of exchange that controller described in WLAN protocol channel reception sends, then pass through WLAN
Described transaction results data are transmitted to roadside unit and remote server by protocol channel.Described in WLAN protocol channel reception
The command information that remote server sends, is transmitted to roadside unit by WLAN protocol passage by described command information.
Described remote server, is used for and described WLAN gateway wireless connections, by WLAN protocol and described WLAN net
Pass communicates, and can be arranged on the network management center of highway, by WLAN gateway described in WLAN protocol channel reception
These transaction results data are stored by the transaction results data sent.When vehicle carried electronic label transmission is referred to by needs accordingly
When making information, after above-mentioned command information being packaged according to WLAN protocol, by WLAN protocol passage by described command information
It is sent to described WLAN gateway.
Described controller, is used for and described WLAN gateway wireless connections, is entered with described WLAN gateway by WLAN protocol
Row communication, can be arranged in tollbooth.The vehicle data sent by WLAN gateway described in WLAN protocol channel reception, to institute
State after vehicle data resolves, according still further to the decruption key set, above-mentioned vehicle data is decrypted.Then, according to this car
Above-mentioned vehicle is carried out after the charging in ETC process of exchange etc. processes, obtaining the transaction results number in ETC process of exchange by data
According to.After above-mentioned transaction results data being packaged according to WLAN protocol, by WLAN protocol passage by described transaction results number
According to being sent to described WLAN gateway.
In this embodiment, roadside unit can obtain the data of vehicle carried electronic label by DSRC, and passes through WLAN
Passing to controller and remote server, the data of remote server can pass to controller and roadside unit by WLAN,
Controller also can transmit data by WLAN to roadside unit and remote server, thus realizes multiple assembly two-way communication.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, module in accompanying drawing or
Flow process is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that: the module in equipment in embodiment can describe according to embodiment divides
It is distributed in the equipment of embodiment, it is also possible to carry out respective change and be disposed other than in one or more equipment of the present embodiment.On
The module stating embodiment can merge into a module, it is also possible to is further split into multiple submodule.
In sum, the embodiment of the present invention is by making roadside unit have DSRC agreement and two kinds of protocol communications of WLAN protocol
Function, roadside unit is communicated by WLAN protocol and WLAN protocol gateway or PC, makes the actual size of roadside unit from dividing
Cloth at the larger communication equipment at 50 meters of communications cable two ends, becomes and can concentrate on the Miniature communication in the range of 1 meter ruler cun and set
Standby, greatly reduce the laying of roadside unit and complexity is installed, so that roadside unit is easily applied in urban environment.This
Inventive embodiments data transmission procedure based on WLAN protocol, using the teaching of the invention it is possible to provide bank card level security of system, and information security is permissible
Strengthened by Network Fittings.
The embodiment of the present invention makes the identity of roadside unit from traditional special DSRC communication equipment, becomes WLAN
Interior standard network communication equipment；Make roadside unit from developing, implement, safeguarding private communication facility, become exploitation, enforcement,
Safeguard networking component.
The embodiment of the present invention provide multiple ETC system in data transmission system can be respectively suitable for simple application or
Complex application context, whole data transmission system is added and sweep equipment is more flexible.In complex application context, store transaction
The data base of result data is arranged in remote server, it is simple to centralized management transaction results data,
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited to
This, any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replace
Change, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be as the criterion.
Claims (9)
1. the data transmission system in an electronic charging system without parking ETC, it is characterised in that including: roadside unit, WLAN
Gateway, controller；Described roadside unit includes: DSRC communication unit, data processing unit and WLAN communication unit；
Described DSRC communication unit, for being communicated with the vehicle carried electronic label on vehicle by DSRC agreement, receives car
Carry the vehicle data in the ETC process of exchange that electronic tag is sent by DSRC protocol channel, described vehicle data is solved
After analysis, described vehicle data is sent to data processing unit；
The transaction results data sending over described data processing unit are packaged according to DSRC agreement, by the friendship after encapsulation
Easily result data is sent to described vehicle carried electronic label by DSRC protocol channel；Described data processing unit, is used for receiving
The vehicle data that described DSRC communication unit sends over, when this vehicle data does not has encrypted, enters described vehicle data
These transaction results data are sent to DSRC communication unit and WLAN communication unit by row ETC trading processing, it is thus achieved that transaction results data
Unit；Described data, for being communicated with WLAN gateway or PC by WLAN protocol, are processed by described WLAN communication unit
The transaction results data that unit sends over are packaged according to WLAN protocol, and the transaction results data after encapsulation are passed through WLAN
Protocol channel is sent to WLAN gateway or PC;
When this vehicle data is encrypted, it is sent to control through WLAN gateway by WLAN protocol passage by described vehicle data
Device, the vehicle data that described controller is sent by WLAN gateway described in WLAN protocol channel reception, to described vehicle data
After resolving, according still further to the decruption key set, described vehicle data is decrypted, described vehicle data is carried out ETC friendship
Disposable, it is thus achieved that transaction results data, after described transaction results data being packaged according to WLAN protocol, pass through WLAN protocol
Passage WLAN gateway is sent to described DSRC communication unit.
Data transmission system in electronic charging system without parking ETC the most according to claim 1, it is characterised in that institute
The roadside unit stated also includes:
Power supply unit, for being powered whole roadside unit, output DC voltage is to DSRC communication unit, WLAN communication unit
Unit and data processing unit.
Data transmission system in electronic charging system without parking ETC the most according to claim 1 and 2, it is characterised in that:
Described data processing unit, is additionally operable to the vehicle data when described DSRC communication unit sends over and is encrypted by key
After, this vehicle data is transmitted to WLAN communication unit；
Described WLAN communication unit, the vehicle data being additionally operable to send over described data processing unit is according to WLAN protocol
It is packaged, the transaction results data after encapsulation are sent to WLAN gateway by WLAN protocol passage, receive WLAN gateway and lead to
Cross the transaction results data in the ETC process of exchange that WLAN protocol passage sends, after described transaction results data are resolved,
Described transaction results data are sent to DSRC communication unit；
Described DSRC communication unit, the transaction results data being additionally operable to send over described WLAN communication unit are according to DSRC
Agreement is packaged, and by DSRC protocol channel, the transaction results data after encapsulation are sent to described vehicle carried electronic label.
Data transmission system in electronic charging system without parking ETC the most according to claim 1 and 2, it is characterised in that:
Described data transmission system also includes remote server；
Described WLAN gateway, for the transaction results data sent by roadside unit described in WLAN protocol channel reception, will
Described transaction results data are sent to remote server by WLAN protocol passage；Described remote server, is used for passing through
The transaction results data that WLAN gateway described in WLAN protocol channel reception sends, resolve described vehicle data and store.
Data transmission system in electronic charging system without parking ETC the most according to claim 4, it is characterised in that: institute
The remote server stated, is additionally operable to when needs send corresponding command information to vehicle carried electronic label, according to WLAN protocol pair
After described command information is packaged, by WLAN protocol passage by institute
State command information and be sent to described WLAN gateway；
Described WLAN gateway, is additionally operable to the command information sent by remote server described in WLAN protocol channel reception, logical
Cross WLAN protocol passage and described command information is transmitted to roadside unit；
Described roadside unit, is additionally operable to receive the command information that described WLAN gateway is sent by WLAN protocol passage, to this
Command information resolves, and after DSRC protocol encapsulation, by DSRC protocol channel, described command information is sent to institute
State vehicle carried electronic label.
Data transmission system in electronic charging system without parking ETC the most according to claim 1 and 2, it is characterised in that:
Described data transmission system also includes remote server；
Described WLAN gateway, for by described in WLAN protocol channel reception roadside unit send encrypted by key after
Vehicle data, is sent to controller by described vehicle data by WLAN protocol passage, described in WLAN protocol channel reception
Transaction results data in the ETC process of exchange that controller sends, then by WLAN protocol passage by described transaction results data
It is transmitted to roadside unit and remote server；
Described remote server, for the transaction results data sent by WLAN gateway described in WLAN protocol channel reception,
These transaction results data are stored.
Data transmission system in electronic charging system without parking ETC the most according to claim 6, it is characterised in that: institute
The remote server stated, is additionally operable to when needs send corresponding command information to vehicle carried electronic label, according to WLAN protocol pair
After described command information is packaged, by WLAN protocol passage by institute
State command information and be sent to described WLAN gateway；
Described WLAN gateway, is additionally operable to the command information sent by remote server described in WLAN protocol channel reception, logical
Cross WLAN protocol passage and described command information is transmitted to roadside unit；
Described roadside unit, is additionally operable to receive the command information that WLAN gateway is sent by WLAN protocol passage, to this instruction
Information resolves, and after DSRC protocol encapsulation, by DSRC protocol channel, described command information is sent to described car
Carry electronic tag.
The data transmission system in electronic charging system without parking ETC in ETC the most according to claim 6, its feature
Being, described controller, WLAN gateway are arranged in tollbooth.
The data transmission system in electronic charging system without parking ETC in ETC the most according to claim 6, its feature
Being, described roadside unit is arranged on portal frame.
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| CN201210514978.0A CN103854319B (en) | 2012-12-04 | 2012-12-04 | Data transmission system in electronic charging system without parking |
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| CN201210514978.0A CN103854319B (en) | 2012-12-04 | 2012-12-04 | Data transmission system in electronic charging system without parking |
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| CN105577700B (en) * | 2016-03-04 | 2019-05-21 | 广州益车益路软件科技有限公司 | Vehicle in and out port control system and its control method based on remote cipher key |
| CN111341121B (en) * | 2020-03-13 | 2021-09-14 | 招商华软信息有限公司 | Method and equipment for determining vehicle driving direction based on ETC portal number |
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| CN101123546A (en) * | 2006-08-09 | 2008-02-13 | 北京握奇数据系统有限公司 | ETC system onboard unit and its implementation method based on WLAN |
| CN101925797A (en) * | 2008-01-21 | 2010-12-22 | 株式会社建伍 | Delivery system and in-vehicle unit |
| CN201402475Y (en) * | 2008-11-18 | 2010-02-10 | 上海东海电脑股份有限公司 | Electronic charging on-vehicle unit with independent safety control module |
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