CN102044092A - OBU transaction processing device and method - Google Patents
OBU transaction processing device and method Download PDFInfo
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- CN102044092A CN102044092A CN 201010610577 CN201010610577A CN102044092A CN 102044092 A CN102044092 A CN 102044092A CN 201010610577 CN201010610577 CN 201010610577 CN 201010610577 A CN201010610577 A CN 201010610577A CN 102044092 A CN102044092 A CN 102044092A
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Abstract
The invention relates to an electronic toll collection (ETC) system, and discloses an on board unit (OBU) transaction processing device and an OBU transaction processing method capable of enabling a plurality of OBU transaction processors to share an antenna so as to greatly shorten the time of a plurality of OBU transactions in the ETC system. The OBU transaction processing device comprises a parallel coordinator and at least one OBU transaction processor, wherein the parallel coordinator is used for selectively connecting the plurality of OBU transaction processors to a dedicated short-range communication (DSRC) channel in turn when the shared DSRC channel is available; and when each OBU transaction processor is connected to the DSRC channel, the OBU transaction processor transmits transaction instructions to be transmitted to an OBU through the DSRC channel.
Description
Technical field
The present invention relates to the ETC system, relate in particular to a kind of OBU traction processing apparatus and method.
Background technology
The free flow system is with the carrier of active RFID electronic label as information of vehicles, the intelligent transportation comprehensive solution of modernization such as binding data mechanics of communication, automatic control technology, computer networking technology, information publishing technology science and technology.This system can be used for the city improvement of blocking up, the accessible Fare Collection System that vehicle freely travels, be also referred to as the multilane free flow (Multi-Lane free flow, MLFF).
The free flow system adopts Dedicated Short Range Communications, (Dedicated ShortRange Communication, DSRC) technology, finish roadside unit (Roadside Unit, RSU) and board units (On Board Unit, the OBU) two-way communication between are carried out safety certification and consumption is withholdd by wireless mode, realize non-parking charge, accelerate the passage rate of vehicle greatly, reduced the congestion of charge ring road mouth, improved the transport power of highway.
RSU is installed on the portal frame of charge station ring road top usually, relies on the luffing angle of adjusting antenna to control the big or small and far and near of communication coverage area, and adjustment process is very complicated.Existing electronic charging system without parking and its implementation, adopt the corresponding OBU transaction processor of an antenna, each OBU transaction processor can only be concluded the business with an OBU, last once the transaction finish after, could conclude the business with next OBU, transactions velocity is slow, can not satisfy the high speed of a motor vehicle, many requirements that motor vehicle passes through simultaneously.
Summary of the invention
The invention provides a kind of OBU traction processing apparatus and method, can make and shorten the time that a plurality of OBU conclude the business in the ETC system greatly by the shared antenna of a plurality of OBU transaction processors.
A kind of OBU traction processing apparatus comprises:
Parallel telegon, but be used for a plurality of OBU transaction processors being selected to connect the DSRC channel successively in the Dedicated Short Range Communications, DSRC channel time spent of sharing;
At least one OBU transaction processor, wherein: each OBU transaction processor is used for when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel.
A kind of OBU transaction processing method comprises:
But, a plurality of OBU transaction processors are selected to connect the DSRC channel successively in the Dedicated Short Range Communications, DSRC channel time spent of sharing;
Each OBU transaction processor is when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel.
The OBU traction processing apparatus that the embodiment of the invention provides, comprise a plurality of OBU transaction processors and parallel telegon, wherein, parallel telegon can be according to the duty of current each OBU transaction processor, select one to connect the DSRC passage successively for needing the OBU that sends trading instruction duty, each OBU transaction processor is when connecting the DSRC passage, and the instruction that needs are sent sends to board units by the DSRC passage.Adopt the OBU traction processing apparatus of the embodiment of the invention, can make a plurality of OBU transaction processors walk abreast and carry out transaction processing, and when needs send instruction, the DSRC channel is shared in timesharing, make and shortened the time that a plurality of OBU conclude the business in the ETC system greatly by the shared antenna of a plurality of OBU transaction processors.
Description of drawings
The structural drawing of the OBU traction processing apparatus that Fig. 1 provides for the embodiment of the invention;
The detailed structure view of the OBU traction processing apparatus that Fig. 2 provides for the embodiment of the invention;
Fig. 3 is traditional OBU exchange hour synoptic diagram;
Fig. 4 is the OBU exchange hour synoptic diagram of the embodiment of the invention;
The process flow diagram of the OBU transaction processing method that Fig. 5 provides for the embodiment of the invention.
Embodiment
Based on the OBU transaction processor among the existing RSU, the corresponding antenna of OBU transaction processor, each OBU transaction processor can only be concluded the business with an OBU, last once the transaction finish after, could conclude the business with next OBU, transactions velocity is slow, can not satisfy the high speed of a motor vehicle, many requirements that motor vehicle passes through simultaneously.The embodiment of the invention provides a kind of OBU transaction processor, can realize the shared antenna of a plurality of OBU transaction processors, be that a plurality of OBU carry out transaction processing simultaneously, and a DSRC channel is shared in timesharing, the exchange hour of a plurality of OBU can be shortened, the transaction processing and the application performance of RSU system can be increased substantially.
As shown in Figure 1, the structural drawing of the OBU traction processing apparatus that provides for the embodiment of the invention specifically comprises:
Walk abreast telegon when each selection is connected, guarantee to have only an OBU transaction processor to be switched to the DSRC channel at every turn, after the trading instruction transmission of a transaction processor finishes, connect next OBU transaction processor again;
Wherein, parallel telegon can select to connect the DSRC channel with the OBU transaction processor that needs in a plurality of OBU transaction processors to send instruction successively according to a plurality of OBU transaction processor current working state; When selecting to connect, can consider OBU transaction processor current working state, only select duty is selected to connect the DSRC channel successively for the OBU transaction processor that needs to send trading instruction, to current just at processing instruction or just do not considering at the OBU transaction processor of wait acknowledge instruction.
If current have only an OBU transaction processor need send instruction, then this OBU transaction processor is connected the DSRC channel, if current have a plurality of OBU transaction processors need send trading instruction, then connect the DSRC channel successively according to the principle of setting, the principle of setting can be the stand-by period according to instructions to be sent such as transaction processors, or the work schedule of transaction processor, can also be other principle, perhaps picked at random.Parallel telegon is by selecting control, to guarantee having only an OBU transaction processor to be switched to the DSRC channel at every turn.
At least one OBU transaction processor 13, wherein: each OBU transaction processor is used for when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel, and wherein, a plurality of OBU transaction processors are shared a DSRC channel;
Wherein, each OBU transaction processor inside is provided with storer, the store transaction instruction, and perhaps all OBU transaction processors unifications are adopted a storer, the store transaction instruction;
Preferably, said apparatus also comprises:
Each OBU transaction processor 13 all links to each other with instruction database, when connecting the DSRC channel, takes out the trading instruction that needs transmission from instruction database, sends to board units by the DSRC channel;
Adopt the trading instruction storage and uniform of instruction database, can save resource all OBU transaction processors.
Wherein, parallel telegon 11 is according to each OBU transaction processor current working state, a selected OBU transaction processor is connected the DSRC channel, and to this selected OBU transaction processor transmission permission transmission order, the OBU transaction processor, after receiving permission transmission order, from instruction database, take out the trading instruction that needs transmission, send to board units by the DSRC channel.
Wherein, the duty of OBU transaction processor comprises: needs send trading instruction state and instruction process state.When the OBU transaction processor need promptly need to send the trading instruction state when board units sends trading instruction.After transmission finishes, be entry instruction treatment state (instruction process state comprise wait acknowledge instruction and processing reply instruction), after receiving the replying instruction and dispose of board units, need to send next bar instruction and promptly enter again and need to send the trading instruction state.
Preferably, each OBU transaction processor also is used to receive the instruction of replying of board units, and when determine this reply instruction be the trading instruction that sends of this OBU transaction processor reply instruction the time, handle the described instruction of replying.
Preferably, said apparatus also comprises:
Adopt command reception buffer 14, can unify to receive the instruction of replying that board units returns, save resource.
Preferably, each OBU transaction processor 13, also be used for reading all from command reception buffer 14 and reply instruction according to the rule of setting, and when the definite response instruction be replying of the trading instruction that sends of this OBU transaction processor when instructing, handle the described instruction of replying.
The rule of setting can be: each OBU transaction processor read simultaneously in the time of setting, and perhaps read successively in the time of setting, and perhaps regularly read, and perhaps read in real time, and perhaps the rule according to other reads.
Wherein, each OBU transaction processor all reads successively in the time of setting, all run through up to all OBU transaction processors, then the command reception buffer is deleted the instruction of replying that all OBU transaction processors had read, reply instruction in the synchronous reading command reception buffer of perhaps a plurality of OBU transaction processors, the command reception buffer is deleted the instruction of replying that all OBU transaction processors had read.
Preferably, also comprise in the said apparatus:
Preferably, above-mentioned OBU transaction processor 13 specifically comprises:
OBU trading instruction transmitter is used for when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel;
Wherein, OBU trading instruction transmitter can take out the trading instruction that needs transmission from instruction database, and sends to board units by the DSRC channel;
OBU trading instruction receiver is used to receive the instruction of replying of board units, and when determine described reply instruction be the trading instruction that sends of this OBU transaction processor reply instruction the time, handle this and reply instruction.
Wherein, if adopt unified command reception buffer 14 to receive replying when instructing of board units, then OBU trading instruction receiver reads the instruction of replying that board units returns from command reception buffer 14, and when determine described reply instruction be the trading instruction that sends of this OBU transaction processor reply instruction the time, handle this and reply instruction.
Preferably, above-mentioned parallel telegon 11 specifically comprises:
The transmit status monitor, but be used in the shared DSRC channel time spent, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively, and the OBU transaction processor that will at every turn select feeds back to the matrix switch controller and sends processing controller;
Particularly, but the DSRC channel time spent of sharing, the transmit status monitor detects each OBU transaction processor current working state, and, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively according to a plurality of OBU transaction processor current working state.
The matrix switch controller is used for the feedback according to the transmit status monitor, and the gating matrix switch is connected the DSRC channel with the OBU transaction processor of selecting;
Send processing controller, be used for feedback, send to the OBU transaction processor of selecting and allow to send order according to the transmit status monitor; And
The OBU transaction processor takes out the trading instruction that needs transmission from instruction database after receiving permission transmission order, send to board units by the DSRC channel.
Particularly, send processing controller and send permission transmission order to the OBU trading instruction receiver of the OBU transaction processor of selecting, and OBU trading instruction receiver receive allow to send order after, the trading instruction that needs are sent sends to board units by the DSRC channel.
Below in conjunction with accompanying drawing, describe each module of the present invention in detail with a preferred embodiment, the detailed structure view of the OBU traction processing apparatus that Fig. 2 provides for the embodiment of the invention, wherein the structure with an OBU transaction processor is the example explanation, the structure of a plurality of OBU transaction processors is identical.
OBU transaction processor 13, OBU transaction processor are responsible for the transmit operation and the reception of all instructions of OBU transaction and are handled.
The OBU transaction processor comprises the OBU trading instruction and sends processor and OBU trading instruction receiving processor two parts.The OBU trading instruction sends processor after receiving the permission transmission order that sends processing controller, sends trading instruction.The OBU trading instruction sends processor inside and carries an instruction sequences register, after receiving the permission transmission order that sends processing controller, the instruction sequences recorder trace is next bar instruction, and from transaction communication instruction storehouse, reads trading instruction, be transferred to matrix switch.
OBU trading instruction receiving processor reads from the command reception buffer and replys instruction, and analyze to receive whether reply instruction effective, if effectively, then judge whether it is the instruction of replying of the trading instruction that sends of this OBU transaction processor, if then carry out instruction process.If do not satisfy any one condition, then do not handle.
Wherein, the trading instruction that each OBU sends self all can be carried the sign of self, and replying in the instruction that board units returns can be carried this sign equally, and the OBU transaction processor can judge whether it is the instruction of replying of this OBU transaction processor by this sign.
Certainly, in above-mentioned OBU traction processing apparatus, also comprise: interface, be responsible for the OBU transaction processor of inside, parallel telegon are connected together through internal bus, and be connected on the external bus by interface, therefore, ppu, for example: CPU just can be by the whole OBU transaction processor of this interface accessing.
Interface can provide parallel bus interface and USB (universal serial bus).
Adopt the OBU traction processing apparatus of the embodiment of the invention, can realize the shared antenna of a plurality of OBU transaction processors, be that a plurality of OBU concurrent transactions are handled, and a DSRC channel is shared in timesharing, the exchange hour of a plurality of OBU can be shortened, the transaction processing and the application performance of RSU system can be increased substantially.For example: traditional single OBU exchange hour is T, if there be N OBU to need transaction, the then overall time is N*T.As shown in Figure 3, be traditional OBU exchange hour synoptic diagram.As shown in Figure 4, be the OBU exchange hour synoptic diagram of the embodiment of the invention, adopt OBU traction processing apparatus of the present invention after, the DSRC time that takies of supposing among the OBU exchange hour T to send trading instruction is Ta, then the overall time of the transaction of N OBU is T+ (N-1) Ta.Shorten a plurality of OBU exchange hours greatly, handle many more OBU, the time of its saving is many more.And,, can realize a plurality of OBU parallel transactions processing, and the DSRC passage is shared in timesharing by the control of parallel telegon.
The embodiment of the invention also provides a kind of OBU transaction processing method, as shown in Figure 5, comprising:
But S501, in the DSRC channel time spent of sharing selects to connect the DSRC channel successively with a plurality of OBU transaction processors;
Particularly, but in the DSRC channel time spent of sharing,, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively according to the duty of a plurality of OBU transaction processors.
S502, each OBU transaction processor are when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel.
Wherein, each OBU transaction processor takes out the trading instruction that needs transmission from instruction database, and sends.
Each OBU transaction processor is when connecting the DSRC channel, and the trading instruction that directly will need to send sends to board units by the DSRC channel.
Preferably, when the OBU transaction processor was selected to connect the DSRC channel, the OBU transaction processor transmission to selection simultaneously allowed to send order, and the OBU transaction processor is after receiving permission transmission order, trading instruction with needs send sends to board units by the DSRC channel.
Can realize when a plurality of OBU transaction processors need send trading instruction by above-mentioned steps, can timesharing share the DSRC passage, improve the utilization factor of DSRC passage.
Above-mentioned steps also comprises:
Replying that S503, reception board units return instructed and buffer memory.
What receive that board units returns replys instruction and is kept in the command reception buffer, to prevent loss of data.
S504, each OBU transaction processor read the instruction from replying of buffer memory according to the rule of setting and reply instruction, and when the definite response instruction be replying of the trading instruction correspondence that sends of this OBU transaction processor when instructing, handle this and reply instruction.
Wherein, each OBU transaction processor is all replied instruction in the reading command reception buffer, and analyze separately whether reply instruction effective, if effectively, then judge and reply the instruction of replying whether instruction is the trading instruction that sends of this OBU transaction processor, determine the instruction of replying of trading instruction that this OBU transaction processor sends, then reply the processing of instruction.If the instruction ignore of replying or reply the instruction of replying that instruction is not the trading instruction that sends of this OBU transaction processor is not then handled.
Wherein, whether instruction is replied in analysis effective: mainly be to judge whether reply instruction is mess code, if mess code is then replied instruction ignore, if the code that the OBU transaction processor can be discerned is then replied instruction effectively.
The OBU traction processing apparatus and the method that adopt the embodiment of the invention to provide, can realize the concurrent working of a plurality of OBU transaction processor, and timesharing takies the DSRC channel, shorten the time of a plurality of OBU transaction greatly, realize that a plurality of OBU parallel transactions handle, improve the utilization factor of OBU transaction processor and the utilization rate of DSRC channel, and the quantity of a plurality of OBU transaction processors that can comprise by inside controls the time of shortening, can satisfy the higher speed of a motor vehicle, many requirements that motor vehicle passes through simultaneously.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the process flow diagram and/or the block scheme of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block scheme and/or square frame and process flow diagram and/or the block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computing machine or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded on computing machine or other programmable data processing device, make on computing machine or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computing machine or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a board units OBU traction processing apparatus is characterized in that, comprising:
Parallel telegon, but be used for a plurality of OBU transaction processors being selected to connect the DSRC channel successively in the Dedicated Short Range Communications, DSRC channel time spent of sharing;
At least one OBU transaction processor, wherein: each OBU transaction processor is used for when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel.
2. device as claimed in claim 1 is characterized in that, also comprises:
Instruction database is used for the store transaction instruction; And
Each OBU transaction processor is used for taking out the trading instruction that needs send from instruction database.
3. device as claimed in claim 1, it is characterized in that, described parallel telegon, but specifically be used in the shared DSRC channel time spent, according to the duty of a plurality of OBU transaction processors, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively.
4. as the arbitrary described device of claim 1-3, it is characterized in that, also comprise:
The command reception buffer is used to receive the instruction of replying that board units returns; And/or
Matrix switch, its control end connect parallel telegon, and its a plurality of input ends connect a plurality of OBU transaction processors, are used for the OBU transaction processor that parallel telegon is selected is connected the DSRC channel.
5. device as claimed in claim 4, it is characterized in that, each OBU transaction processor, also be used for reading the described instruction of replying from the command reception buffer according to the rule of setting, and when determine described reply instruction be the trading instruction that sends of this OBU transaction processor reply instruction the time, handle the described instruction of replying.
6. as the arbitrary described device of claim 1-3, it is characterized in that described OBU transaction processor specifically comprises:
OBU trading instruction transmitter is used for when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel;
OBU trading instruction receiver is used for reading the described instruction of replying according to the rule of setting from the command reception buffer, and when determining that described to reply instruction be replying of the trading instruction that sends of this OBU transaction processor when instructing, handles the described instruction of replying.
7. device as claimed in claim 4 is characterized in that, described parallel telegon specifically comprises:
The transmit status monitor, but be used in the shared Dedicated Short Range Communications, DSRC channel time spent, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively, and the OBU transaction processor that will at every turn select feeds back to the matrix switch controller and sends processing controller;
The matrix switch controller is used for the feedback according to the transmit status monitor, controls described matrix switch the OBU transaction processor of described selection is connected the DSRC channel;
Send processing controller, be used for feedback, send to the OBU of described selection transaction processor and allow to send order according to the transmit status monitor.
8. device as claimed in claim 7, it is characterized in that, described transmit status monitor, but specifically be used in the shared DSRC channel time spent, detect each OBU transaction processor current working state, and according to a plurality of OBU transaction processor current working state, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively, and the OBU transaction processor that will at every turn select feeds back to the matrix switch controller and sends processing controller.
9. a board units OBU transaction processing method is characterized in that, comprising:
But, a plurality of OBU transaction processors are selected to connect the DSRC channel successively in the Dedicated Short Range Communications, DSRC channel time spent of sharing;
Each OBU transaction processor is when connecting the DSRC channel, and the trading instruction with needs send sends to board units by the DSRC channel.
10. method as claimed in claim 9 is characterized in that, also comprises:
Replying that the reception board units returns instructed and buffer memory, described each OBU transaction processor also reads the instruction from replying of buffer memory according to the rule of setting and replys instruction, and when determine described reply instruction be the trading instruction that sends of this OBU transaction processor reply instruction the time, handle the described instruction of replying.
11. method as claimed in claim 9 is characterized in that, but in the DSRC channel time spent of sharing, a plurality of OBU transaction processors is selected to connect the DSRC channel successively be specially:
But,, the OBU transaction processor that needs in a plurality of OBU transaction processors to send trading instruction is selected to connect the DSRC channel successively according to the duty of a plurality of OBU transaction processors in the DSRC channel time spent of sharing.
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| CN104423952A (en) * | 2013-09-03 | 2015-03-18 | 航天信息股份有限公司 | Programmable interface of roadside unit in ETC (electronic toll collection) system and implementation method of programmable interface |
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| CN102810219A (en) * | 2011-05-31 | 2012-12-05 | 中兴通讯股份有限公司 | Label transaction method and system based on radio frequency identification |
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| CN102044092B (en) | 2013-04-24 |
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