CN108711197A - The method and apparatus that a kind of power to board units is adaptively adjusted - Google Patents
The method and apparatus that a kind of power to board units is adaptively adjusted Download PDFInfo
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- CN108711197A CN108711197A CN201810510506.5A CN201810510506A CN108711197A CN 108711197 A CN108711197 A CN 108711197A CN 201810510506 A CN201810510506 A CN 201810510506A CN 108711197 A CN108711197 A CN 108711197A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- 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
Abstract
The present invention provides a kind of method and apparatus that the power to board units OBU is adaptively adjusted, and this method includes：It is the first parameter by the power setting of the OBU, to be communicated with ETC antennas and complete entrance transaction flow before electric non-stop toll ETC entrances；It is the second parameter by the power setting of the OBU, to be communicated with Path Recognition antenna before the OBU suspend mode after the ETC entrances.Technical scheme of the present invention has very well merged the functional characteristic of CPC cards and tradition OBU, has not only remained OBU car owners in toll road entrance conveniently characteristic, but also improve the mark success rate on Path Recognition road.It is at low cost for other schemes, upgrading need not be carried out to OBU, antenna or even whole system, so that it may to complete the accurate recording of the entrance on toll road, routing information.
Description
Technical field
Present invention relates in general to intelligent transportation fields, are carried out certainly more particularly, to the power to board units (OBU)
Adapt to the field of adjustment.
Background technology
It is identified currently, ExpresswayNetwork Toll Collection System includes mainly no-stop charging system (ETC) and ambiguity path
Compound password card (CPC).The major function of ETC be by vehicle carried electronic label in vehicle windscreen with charging
It stands and is communicated by special short range communication DSRC between the Path Recognition antenna on the tracks ETC.Then, joined using computer
Network technology carries out backstage settlement process with bank, and road and bridge expense can be paid to reach by vehicle is not required to parking by toll on the road and bridge station
Purpose.
In the case that car owner has installed OBU, speed way is entered by the tracks ETC in entrance, is equipped with when by one
When the road of Path Recognition equipment, RSU sends microwave signal by antenna, and OBU is waken up and OBU is written in Path Recognition information
It is interior, and export the routing information read in OBU in high speed and charge according to written standards.
When car owner is fitted without OBU, CPC cards are got in artificial track, when by road equipped with Path Recognition equipment,
RSU sends microwave signal by antenna, and Path Recognition information is written in CPC cards, and CPC cards are given back track in high speed outlet
Staff collects corresponding expense from the background according to the entrance information and Path Recognition information in CPC cards.
OBU and differences of the CPC in physical parameter, mainly CPC cards have higher microwave communication sensitivity, such as wake up
Sensitivity is -50dbm, and receiving sensitivity is -65dbm；And the wake-up sensitivity of OBU be -40dbm, receiving sensitivity be -
50dbm.Also, since the antenna direction on CPC cards is omnidirectional, so, in the practical application on Path Recognition road, due to
The parametric sensitivity ratio CPC cards of OBU are low, and under the same conditions, the distance that OBU is waken up by Path Recognition antenna is just more than CPC cards
Closely.And vehicle is usually all run at high speed on this road, causes the mark success rate equipped with OBU vehicles apparently without CPC
The success rate of card is high.But in ETC entrances, since speed is limited in 20 kilometers per hour, OBU at this moment can preferably ensure
Antenna and the OBU in same track under same track interact, and avoid the problem that Lin Dao interference occurs.
In existing Path Recognition road, the scheme of generally taking OBU and CPC cards to coexist.In order to improve OBU and CPC
The mark success rate being stuck under Path Recognition antenna often sets maximum (for 33dbm) mark antenna power to.
The disadvantages of this solution is, although increasing the power of antenna, but still cannot solve the problems, such as that mark is low success rate of.
When car owner uses CPC cards, if card placement shelter in the car or card blocked by certain metal object, even if path
It identifies that antenna power is sufficiently large, on the road run at high speed, cannot guarantee that CPC is stuck in the region that can be waken up.
When car owner passes through ID of trace route path antenna using OBU, due to OBU parameters itself and the limitation of antenna, comparing
It is highly stable that DSRC data interactions are carried out on the track of low speed, but since car owner consciously will not decline slow train in mark antenna
Speed, mark success rate be not still high.
In order to improve OBU in the mark success rate of Path Recognition road, some provinces take what multiple technologies were combined
Method.For example OBU upgrades to compound mobile unit unit, i.e. OBU has been internally integrated 433MHz radio-frequency modules.Wherein 5.8GHz frequencies
Section is sended and received for high speed entrance DSRC data, and 433MHz frequency ranges are then used for the record of ID of trace route path information.
The workflow of the program is, when car owner enters ETC entrances, passage path identification antenna completes ETC and enters oral sex
Easily, then OBU opens 433MHz radio-frequency modules.Simultaneously on having the road of Path Recognition, multiple base stations 433MHz, base station are built
433MHz radiofrequency signals are constantly sent, the ends OBU receive the signal by 433MHz modules and are written in OBU security modules.In ETC
Outlet, Path Recognition antenna read OBU data, corresponding expense are collected according to entrance information and identification information.
The disadvantages of this solution is that without security mechanism, the data of transmission are plaintext, and are not had with OBU for base stations 433MHz itself
There are data interaction, OBU to be only responsible for reception.Program safety is poor, artificially can capture communication data by reception device, and build
Vertical pseudo-base station sends pseudo- data to OBU, escapes current expense.Moreover, being added to 433MHz modules at the ends OBU, not only increase
OBU costs, 433MHz antennas coexist with 5.8G antennas on OBU, and interference is also be easy to cause to signal.
Invention content
The purpose of the present invention is overcoming the defect that OBU marks success rate is relatively low in the prior art or safety is poor, provide
A kind of method and apparatus that can carry out accurate mark.
According to the first aspect of the invention, a kind of method that the power to board units OBU is adaptively adjusted is provided,
Including：It is the first parameter by the power setting of the OBU before electric non-stop toll ETC entrances, to be carried out with ETC antennas
It communicates and completes entrance transaction flow；After the ETC entrances, before the OBU suspend mode, the power of the OBU is set
It is set to the second parameter, to be communicated with Path Recognition antenna.
Optionally, method of the invention further comprises：In the OBU traveling process, detect in received signal
Beacon service table BST, to determine that received signal is still sent out by ETC antennas by Path Recognition antenna.
Optionally, when it is 0xA0-0xFE to detect the BST manufacturer codes byte, it is determined that received signal is
It is sent out by Path Recognition antenna.
Optionally, when detecting received signal is sent out by Path Recognition antenna, keep with second parameter with
The Path Recognition antenna is communicated.
Optionally, when it is 0x00-0x9E to detect the BST manufacturer codes byte, it is determined that received signal is
It is sent out by ECT antennas.
Optionally, it is first by the power setting of the OBU when detecting received signal is sent out by ETC antennas
Parameter, and the OBU is made to carry out suspend mode.
Optionally, method of the invention further comprises：When the OBU is waken up, determines and currently exported for ETC, and
It is communicated with ETC antennas and completes outlet transaction flow.
Optionally, first parameter include the first of -40dbm wake up the first of sensitivity and -50dbm receive it is sensitive
Degree；And second parameter includes the second receiving sensitivity of the second wake-up sensitivity and -65dbm of -50dbm.
According to a second aspect of the present invention, a kind of equipment that the power to board units OBU is adaptively adjusted is provided, is wrapped
It includes：The power setting of the OBU is the first parameter for before electric non-stop toll ETC entrances by first device, with
ETC antennas are communicated and complete entrance transaction flow；Second device, for after the ETC entrances, by the OBU
Power setting be the second parameter, to be communicated with Path Recognition antenna.
According to a third aspect of the present invention, provide it is a kind of power can adaptively be adjusted to board units OBU, packet
It includes：Memory；And it is coupled to the processor of the memory, the processor is configured as being based on being stored in the memory
In instruction, execute method as described in claim.
According to a fourth aspect of the present invention, a kind of computer readable storage medium is provided, computer program is stored thereon with and refers to
It enables, which realizes method as described above when being executed by one or more processors.
Technical scheme of the present invention has very well merged the functional characteristic of CPC cards and tradition OBU, has both remained OBU vehicles
It is main in toll road entrance conveniently characteristic, and improve the mark success rate on Path Recognition road.
It is at low cost for other schemes, upgrading need not be carried out to OBU, antenna or even whole system, just
It can complete the accurate recording of entrance on toll road, routing information.
Description of the drawings
Fig. 1 shows the stream for the method that the power to board units according to one aspect of the invention is adaptively adjusted
Cheng Tu；
Fig. 2 shows the scenes that technical scheme of the present invention is applied；
Fig. 3 shows that the power to board units OBU according to a further aspect of the present invention adaptively adjusted sets
Standby block diagram；
Fig. 4 describes OBU according to embodiment of the present invention；And
Fig. 5 shows program product according to embodiment of the present invention.
Specific implementation mode
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, and reference label refers to the group in the present invention
Part, technology, being realized under appropriate circumstances so as to advantages and features of the invention can be easier to be understood.Following description is pair
The materialization of the claims in the present invention, and also belong to power with the relevant other specific implementations not clearly stated of claim
The range that profit requires.Simultaneously, it should be appreciated that for ease of description, the sizes of attached various pieces shown in the drawings be not by
It is drawn according to actual proportionate relationship.Be to the description only actually of at least one exemplary embodiment below it is illustrative,
Never as to the present invention and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
Fig. 1 shows the stream for the method that the power to board units according to one aspect of the invention is adaptively adjusted
Cheng Tu；Fig. 2 shows the scenes that technical scheme of the present invention is applied.
As shown in Figure 1, the method for the present invention includes：In operation S110, before electric non-stop toll ETC entrances, by institute
The power setting for stating OBU is the first parameter, to be communicated with ETC antennas and complete entrance transaction flow；And it is operating
The power setting of the OBU is the second parameter, to be led to Path Recognition antenna after the ETC entrances by S120
Letter.
It is described in more detail with reference to Fig. 2.It is to be appreciated that although the antenna and high speed of the inlet ETC
Path Recognition antenna on highway belongs to roadside unit RSU, but the purpose distinguished for convenience in the present invention, by ETC entrances
The antenna at place is known as ETC antennas, and the antenna of highway trackside is known as Path Recognition antenna.Such name is to the present invention's
Protection domain is not limited in any way.
In fig. 2, vehicle on road when driving, first can enter ETC charge stations inlet (in fig. 2 with " A points "
To indicate).At A points, can by the power setting of the OBU for convenience of the parameter that be communicated with ECT antennas, with ETC
Antenna is communicated and completes entrance transaction flow.Parameter described here can be that the wake-up sensitivity of OBU is -40dBm, connect
Receipts sensitivity is -50dBm.It will be appreciated by persons skilled in the art that at expressway access, concurrently exist multiple
The tracks ETC, excessively high sensitivity would potentially result in monkey chatter, therefore, by the parameter of OBU so set, desirably reducing
Monkey chatter improves the accuracy of reading.
Next, after vehicle have passed through ETC entrances, as shown in the B points of Fig. 2, vehicle is completed with ETC antennas
Transaction flow, and at this time OBU also in state of activation, not yet suspend mode.Know by path next, vehicle will be more likely to more ground
Other antenna is simultaneously communicated with Path Recognition antenna.Therefore, by after B points, can by the parameter setting of OBU for convenience of with
Path Recognition antenna is communicated, so that vehicle completes good communication during high speed driving.Parameter described here
The wake-up sensitivity that can be OBU is -50dBm, and receiving sensitivity is -65dBm, this is sensitive by the reception with traditional CPC cards
It spends similar.
It is to be appreciated that above-described two kinds of sensitivity is only a kind of example, those skilled in the art can root
The sensitivity being more suitable for is set according to actual conditions, and is not limited to any one described above.
Next, according to embodiment of the present invention, as shown in Figure 1, the method for the present invention further comprises：
S130, in the OBU traveling process, detect received signal in beacon service table BST, with determine received signal be by
What Path Recognition antenna was still sent out by ETC antennas.
With further reference to Fig. 2, when vehicle on super expressway when driving, may be by Path Recognition such as when reaching C points
Antenna wakes up, and Path Recognition antenna issues beacon service table (BST) frame data at this time, according to the BST frame data, when the antenna quilt
When resolving to Path Recognition antenna, path mark flow is completed.
Therefore, in the present invention, in operation S140, when detecting received signal is sent out by Path Recognition antenna,
Holding is communicated with second parameter with the Path Recognition antenna.The wake-up sensitivity of second parameter and receiving sensitivity
It is higher, therefore convenient for vehicle good communication is completed with Path Recognition antenna during high speed driving.
Detection antenna is that Path Recognition antenna or ETC antennas can be there are many modes, and a kind of mode is when detecting institute
State BST manufacturer code bytes be 0xA0-0xFE when, it is determined that received signal is sent out by Path Recognition antenna.
Next, according to embodiment of the present invention, in operation S150, when detecting that received signal is by ETC
It is the first parameter by the power setting of the OBU, and the OBU is made to carry out suspend mode when antenna is sent out.
As shown in Fig. 2, when vehicle drives to D points, i.e., when distance ETC exports a distance, since current OBU is in
Second parameter, wakes up sensitivity and receiving sensitivity is higher, therefore can be called out in distance ETC antenna larger distances
It wakes up.At this point, when being determined as ETC antennas, it can be rapidly by parameter switching to lower first parameter of sensitivity, and quickly enter
Dormant state.Farther out due to distance ETC antennas, OBU there is time enough to be waken up, parameter switching, the row action such as suspend mode
(this process is typically not greater than 50ms).
Next, in operation S160, when the OBU is waken up, determines and currently exported for ETC, and carried out with ETC antennas
It communicates and completes outlet transaction flow.
As shown in Fig. 2, in E points, for vehicle close to the exits ETC, current OBU is in lower first ginseng of sensitivity
Number, therefore can normally transaction flow be completed with the ETC antennas in exit.The flow and the conventional mistake for being driven out to the outlets ETC
Cheng Xiangtong, therefore will not be described in great detail here.
According to embodiment of the present invention, when it is 0x00-0x9E to detect the BST manufacturer codes byte,
Then determine that received signal is sent out by ETC antennas.
Fig. 3 shows that the power to board units OBU according to a further aspect of the present invention adaptively adjusted sets
Standby block diagram.
As shown in figure 3, the equipment of the present invention includes：First device M310, in electric non-stop toll ETC entrances
Before, it is the first parameter by the power setting of the OBU, to be communicated with ETC antennas and complete entrance transaction flow；And the
Two devices M320, for being the second parameter by the power setting of the OBU after the ETC entrances, with Path Recognition
Antenna is communicated.
Technical scheme of the present invention has very well merged the functional characteristic of CPC cards and tradition OBU, has both remained OBU vehicles
It is main in toll road entrance conveniently characteristic, and improve the mark success rate on Path Recognition road.
It is at low cost for other schemes, upgrading need not be carried out to OBU, antenna or even whole system, just
It can complete the accurate recording of entrance on toll road, routing information.
Person of ordinary skill in the field it is understood that various aspects of the invention can be implemented as system, method or
Program product.Therefore, various aspects of the invention can be embodied in the following forms, i.e.,：It is complete hardware embodiment, complete
The embodiment combined in terms of full Software Implementation (including firmware, microcode etc.) or hardware and software, can unite here
Referred to as circuit, " module " or " system ".
In some possible embodiments, the present invention can be implemented as a kind of capable of adaptively adjusting power
To board units OBU, which may include memory；And be coupled to the processor of the memory, the processor by with
It is set to based on the instruction being stored in the memory, executes method as described above.
The OBU of this embodiment according to the present invention is described referring to Fig. 4.The OBU that Fig. 4 is shown is only one
Example, this should not bring any restrictions to the function and use scope of the embodiment of the present invention.
As shown in figure 4, OBU 1 is showed in the form of universal computing device, including but not limited to：At least one processor
10, at least one processor 20, the bus 60 of connection different system component.
Bus 60 indicates one or more in a few class bus structures, including memory bus or Memory Controller,
Peripheral bus, graphics acceleration port, processor or the local bus using the arbitrary bus structures in a variety of bus structures.
Memory 20 may include the readable medium of form of volatile memory, such as random access memory (RAM) 21
And/or cache memory 22, it can further include read-only memory (ROM) 23.
Memory 20 can also include program module 24, and such program module 24 includes but not limited to：Operating system, one
A or multiple application programs, other program modules and program data, can in each or certain combination in these examples
It can include the realization of network environment.
OBU 1 can also be communicated with one or more external equipments 2, can also be led to one or more other equipment
Letter.This communication can be carried out by input/output (I/O) interface 40, and be shown on display unit 30.Also, OBU
1 can also pass through network adapter 50 and one or more network (such as LAN (LAN), wide area network (WAN) and/or public affairs
Common network network, such as internet) communication.As shown, network adapter 50 is logical by other modules in bus 60 and OBU 1
Letter.It should be understood that although not shown in the drawings, but other hardware and/or software module can be used in conjunction with OBU 1, including but not
It is limited to：Microcode, device driver, redundant processing unit, external disk drive array, RAID system, tape drive and
Data backup storage system etc..
In some possible embodiments, various aspects of the invention are also implemented as a kind of shape of program product
Formula comprising program code, when said program code is when being executed by processor, said program code is for making the processor
Execute method described above.
The arbitrary combination of one or more readable mediums may be used in described program product.Readable medium can be readable letter
Number medium or readable storage medium storing program for executing.Readable storage medium storing program for executing for example may be-but not limited to-electricity, magnetic, optical, electromagnetic, red
The system of outside line or semiconductor, device or device, or the arbitrary above combination.The more specific example of readable storage medium storing program for executing
(non exhaustive list) includes：Electrical connection, portable disc with one or more conducting wires, hard disk, random access memory
(RAM), read-only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disc
Read memory (CD-ROM), light storage device, magnetic memory device or above-mentioned any appropriate combination.
As shown in figure 5, showing program product 3 according to the embodiment of the present invention, Portable, compact may be used
Disk read-only memory (CD-ROM) and include program code, and can be run on terminal device, such as PC.However,
The program product of the present invention is without being limited thereto, and in this document, readable storage medium storing program for executing, which can be any, includes or storage program has
Shape medium, the program can be commanded the either device use or in connection of execution system, device.
It can be write with any combination of one or more programming languages for executing the program that operates of the present invention
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It executes on computing device, partly execute on a user device, being executed as an independent software package, partly in user's calculating
Upper side point is executed or is executed in remote computing device or server completely on a remote computing.It is being related to far
In the situation of journey computing device, remote computing device can pass through the network of any kind --- including LAN (LAN) or extensively
Domain net (WAN)-be connected to user calculating equipment, or, it may be connected to external computing device (such as utilize Internet service
Provider is connected by internet).
In addition, although the operation of the method for the present invention is described with particular order in the accompanying drawings, this do not require that or
Hint must execute these operations according to the particular order, or have to carry out shown in whole operation could realize it is desired
As a result.Additionally or alternatively, it is convenient to omit multiple steps are merged into a step and executed by certain steps, and/or by one
Step is decomposed into execution of multiple steps.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and this
Field technology personnel can design alternative embodiment without departing from the scope of the appended claims.In claim
In, any reference mark between bracket should not be configured to limitations on claims.
Claims (11)
1. a kind of method that power to board units OBU is adaptively adjusted, including：
It is the first parameter by the power setting of the OBU, to be led to ETC antennas before electric non-stop toll ETC entrances
Believe and completes entrance transaction flow；
After the ETC entrances, before the OBU suspend mode, by the power setting of the OBU be the second parameter, with road
Diameter identification antenna is communicated.
2. according to the method described in claim 1, further comprising：
In the OBU traveling process, detect received signal in beacon service table BST, with determine received signal be by
What Path Recognition antenna was still sent out by ETC antennas.
3. according to the method described in claim 2, wherein, when detecting that the BST manufacturer codes byte is 0xA0-0xFE
When, it is determined that received signal is sent out by Path Recognition antenna.
4. according to the method described in claim 3, wherein,
When detecting received signal is sent out by Path Recognition antenna, keep with second parameter and the Path Recognition
Antenna is communicated.
5. according to the method described in claim 2, wherein, when detecting that the BST manufacturer codes byte is 0x00-0x9E
When, it is determined that received signal is sent out by ETC antennas.
6. according to the method described in claim 5, wherein,
It is the first parameter by the power setting of the OBU, and make when detecting received signal is sent out by ETC antennas
The OBU carries out suspend mode.
7. according to the method described in claim 5, further comprising：
It when the OBU is waken up, determines and is currently exported for ETC, and communicated with ETC antennas and complete outlet transaction flow
Journey.
8. according to the method described in claim 1, wherein,
First parameter includes the first receiving sensitivity of the first wake-up sensitivity and -50dbm of -40dbm；And
Second parameter includes the second receiving sensitivity of the second wake-up sensitivity and -65dbm of -50dbm.
9. the equipment that a kind of power to board units OBU is adaptively adjusted, including：
The power setting of the OBU is the first parameter for before electric non-stop toll ETC entrances by first device, with
ETC antennas are communicated and complete entrance transaction flow；
Second device, for being the second parameter by the power setting of the OBU, to know with path after the ETC entrances
Other antenna is communicated.
10. it is a kind of power can adaptively be adjusted to board units OBU, including：
Memory；And it is coupled to the processor of the memory, the processor is configured as being based on being stored in the storage
Instruction in device executes such as method described in any item of the claim 1 to 8.
11. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is handled by one or more
The method described in any one of claim 1 to 8 is realized when device executes.
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| CN201810510506.5A CN108711197B (en) | 2018-05-24 | 2018-05-24 | Method and equipment for adaptively adjusting power of vehicle-mounted unit |
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| CN201810510506.5A CN108711197B (en) | 2018-05-24 | 2018-05-24 | Method and equipment for adaptively adjusting power of vehicle-mounted unit |
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| CN110136280A (en) * | 2019-05-16 | 2019-08-16 | 深圳成谷科技有限公司 | OBU wakeup sensitivity adjusting method and device |
| CN110705671A (en) * | 2019-09-20 | 2020-01-17 | 天地融科技股份有限公司 | Code printing method and code printing device for vehicle-mounted unit |
| CN111325864A (en) * | 2020-03-27 | 2020-06-23 | 深圳复芯微科技有限公司 | Method, device and equipment for controlling receiving sensitivity of vehicle-mounted unit |
| CN112203256A (en) * | 2020-09-11 | 2021-01-08 | 北京万集科技股份有限公司 | Control method and device for on-board unit, storage medium, and electronic device |
| CN115131889A (en) * | 2021-03-25 | 2022-09-30 | 华为技术有限公司 | Road charging method and device |
| CN115512451A (en) * | 2022-09-16 | 2022-12-23 | 广州隧华智慧交通科技有限公司 | Switchable highway toll ETC lane system |
| CN116137712A (en) * | 2023-04-14 | 2023-05-19 | 广州市赛奥自动化技术有限公司 | ETC equipment signal transmission control method and system based on 5.8G communication |
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