CN102236967A - Method and device for screening real-time traffic information - Google Patents
Method and device for screening real-time traffic information Download PDFInfo
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Abstract
The invention provides a method and a device for screening real-time traffic information. The method comprises the following steps of: reading a real-time traffic information release state of a road; judging whether released real-time traffic information is same as real-time traffic information to be released of the road or not if the release state is that the real-time traffic information of the road is released; and discarding the real-time traffic information to be released if the released real-time traffic information is same as the real-time traffic information to be released of the road. The screening device comprises a release state judgment unit, a release content judgment unit and an information discarding unit, wherein the release state judgment unit is used for reading the real-time traffic information release state of the road and triggering the release content judgment unit if the release state is that the real-time traffic information of the road is released; the release content judgment unit is used for judging whether the released real-time traffic information is same as the real-time traffic information to be released of the road or not; and the information discarding unit is used for discarding the real-time traffic information to be released which is same as the released real-time traffic information. By the method and the device, more comprehensive real-time traffic information can be released, and the reliability of dynamic navigation of a vehicle can be improved.
Description
Technical field
The present invention relates to the intelligent transport technology field, relate in particular to a kind of Real-time Traffic Information screening technique and device.
Background technology
Expansion day by day along with rapid economy development and population, the quantity of motor vehicle sharply increases, because the growth rate of motor vehicle is considerably beyond the construction speed of road and means of transportation, the pressure of urban highway traffic is increasing, and people's car contradiction and bus or train route contradiction become increasingly conspicuous.
Along with the widespread use of computing machine, information and communication technology (ICT), people just are being devoted to utilize a kind of new technology to improve the service efficiency of path resource, improve the agility and the security of trip.This new technology is called as intelligent transportation system (Intelligent Transportation System, ITS), ITS is the complication system of an opening, its with integrated uses such as the information processing technology, data communication technology, electronic technology and computer technologies in traffic administration, thereby set up on a large scale, comprehensively play a role, in real time, correctly, traffic comprehensive management system efficiently, wherein Vehicular navigation system is the important component part of ITS.
Vehicular navigation system can be cooked up the optimum road that arrives the destination according to the data of road electronic map database, and by optimum road guiding vehicles is arrived the destination.In the past,, make Vehicular navigation system be difficult to almost that the user provides thoughtfully, navigation Service efficiently because Real-time Traffic Informations such as traffic hazard, road congestion, road construction, traffic control can not in time offer Vehicular navigation system.In recent years, radio data system (Radio Data System, RDS) development rapidly, for the realization of automobile dynamic navigation provides the foundation.
RDS is European Broadcasting Union's tissue (European Broadcasting Union, EBU) Kai Fa Radio Data System.(Traffic Message Channel TMC) carries out digitizing, the issue of noiseless Real-time Traffic Information, does not interfere audio broadcasting by traffic message channel for it.The Vehicular navigation system that possesses the RDS-TMC receiver/decoder receives the RDS-TMC message that carries Real-time Traffic Information of RDS-TMC system issue and decodes, and then the Real-time Traffic Information relevant with the current driving route is represented to the driver with user language or visual way.
At present, Eurocities uses the RDS-TMC system in a large number, the Real-time Traffic Information publishing policy that European RDS-TMC system is adopted study with practice process in, the inventor finds that European RDS-TMC system is when the RDS-TMC message of Real-time Traffic Information is carried in transmission, employing arrives first the message strategy of issue earlier, though the limited amount of RDS-TMC issue passage unit interval issue RDS-TMC message, but because the Eurocities scale is generally less, correspondingly, the quantity of RDS-TMC message is also less, therefore, European RDS-TMC system can issue all RDS-TMC messages in official hour.But for the Chinese city of, urban road situation complexity big for city size, the RDS-TMC quantities of messages is very big, if adopt the general Real-time Traffic Information publishing policy in Europe, then in official hour, can only issue part RDS-TMC message, there are a lot of important RDS-TMC messages to issue, thereby the Real-time Traffic Information that causes Vehicular navigation system to receive is comprehensive inadequately, has reduced the reliability of automobile dynamic navigation.
Summary of the invention
The technical matters that the embodiment of the invention will solve provides a kind of Real-time Traffic Information screening technique and device, can reject the Real-time Traffic Information that there is no need to issue, thereby make delivery system can in the limited time, issue more effective, Real-time Traffic Information more fully.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions:
The embodiment of the invention provides a kind of Real-time Traffic Information screening technique, and described method comprises:
Read the Real-time Traffic Information issued state of road, if described issued state is a Real-time Traffic Information of issuing described road, judge that then whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, if identical, then abandons described Real-time Traffic Information to be released.
The embodiment of the invention also provides a kind of Real-time Traffic Information screening plant, and described screening plant comprises: issued state judging unit, content distributed judging unit, information discarding unit;
Described issued state judging unit is used to read the Real-time Traffic Information issued state of road, if described issued state is a Real-time Traffic Information of issuing described road, then triggers described content distributed judging unit;
Described content distributed judging unit is used to judge whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road;
Described information discarding unit is used to abandon the to be released Real-time Traffic Information identical with the Real-time Traffic Information of issuing.
Technique scheme has following beneficial effect:
The Real-time Traffic Information triage techniques scheme that the embodiment of the invention provides, judge the Real-time Traffic Information issued state of road earlier, if issued state is a Real-time Traffic Information of issuing this road, judge then whether the Real-time Traffic Information that road issued is identical with Real-time Traffic Information to be released, if the Real-time Traffic Information to be released of road is identical with the Real-time Traffic Information of issuing, illustrate that this Real-time Traffic Information to be released does not have necessity of issue, can abandon.Because the technical scheme that the embodiment of the invention provides has been rejected the Real-time Traffic Information that there is no need to issue, make the total amount of Real-time Traffic Information to be released reduce, thereby make delivery system can in the limited time, issue more effective, Real-time Traffic Information more fully, improve the reliability of automobile dynamic navigation.
Description of drawings
The Real-time Traffic Information screening technique process flow diagram that Fig. 1 provides for first embodiment of the invention;
The Real-time Traffic Information screening technique process flow diagram that Fig. 2 provides for second embodiment of the invention;
Fig. 3 forms synoptic diagram for the Real-time Traffic Information screening plant that the embodiment of the invention provides.
Embodiment
For the purpose that makes the embodiment of the invention, technical scheme, and advantage clearer, below the technical scheme that the embodiment of the invention provides is elaborated with reference to accompanying drawing.
See also Fig. 1, be the Real-time Traffic Information screening technique process flow diagram that first embodiment of the invention provides, this method comprises:
Step 101: read the Real-time Traffic Information issued state of road,, then enter step 102 if described issued state is a Real-time Traffic Information of issuing described road, otherwise, enter step 105;
In embodiments of the present invention, Real-time Traffic Information comprises: general traffic problems, weather condition, road event context (such as, by blocking up that accident causes) and the order of severity (such as, the queue length that causes) etc.
Step 102: judge whether the Real-time Traffic Information that road issued is identical with Real-time Traffic Information to be released,, then enter step 103 if identical, otherwise, enter step 105;
In embodiments of the present invention, the Real-time Traffic Information of issuing is meant: carry out the Real-time Traffic Information of once issuing before this issue flow process.
Step 103: whether the duration of judging Real-time Traffic Information issue less than the end message effective time of presetting, if less than, then enter step 104, if greater than, step 105 then entered;
Terminal (such as, radio station, Vehicular navigation system) receive the Real-time Traffic Information of road after, if duration of this Real-time Traffic Information is at default end message in effective time, terminal will be reported this Real-time Traffic Information, in case and the duration of this Real-time Traffic Information has surpassed default end message effective time, terminal thinks that then this Real-time Traffic Information lost efficacy.Such as, terminal receives that the Real-time Traffic Information in certain highway section is for blocking up, when duration of this information at default end message in effective time, the Real-time Traffic Information that terminal is reported this highway section is " congestion in road ", surpass default end message effective time when the duration of this information, terminal will think that there is not jam in this highway section, the Real-time Traffic Information that terminal is reported this highway section may be " highway section is unimpeded ", but the real road situation may be that this highway section is still for blocking up, report wrong Real-time Traffic Information for fear of terminal, judge when step 102 and to obtain Real-time Traffic Information that Real-time Traffic Information to be released and terminal receive when identical, need in the method that the embodiment of the invention provides, execution in step 103 whether determine the duration of the Real-time Traffic Information of issuing greater than default end message effective time, if greater than, even if twice Real-time Traffic Information in front and back is identical, needs that also Real-time Traffic Information to be released is added into set to be released and issue again.But, it should be noted that, it is for further solving the problem that terminal is reported wrong Real-time Traffic Information, that is to say that the embodiment of the invention adds step 103, and this step is inessential for the problem that solves " rejecting the necessary Real-time Traffic Information of issue " that the present invention will solve.
Step 104: abandon Real-time Traffic Information to be released;
Step 105: add Real-time Traffic Information to be released to set to be released.
More than the Real-time Traffic Information screening technique that provides for first embodiment of the invention, this method is by the deletion to be released Real-time Traffic Information identical with the Real-time Traffic Information of issuing, reduce the total amount of Real-time Traffic Information to be released, make delivery system can in official hour, can issue more effective, Real-time Traffic Information more fully.Further, if before deletion Real-time Traffic Information to be released, by judging the duration of Real-time Traffic Information to be released, the Real-time Traffic Information that then can reserve part should issue again, avoid terminal to report wrong Real-time Traffic Information, further improved the reliability of automobile dynamic navigation.
Below in conjunction with accompanying drawing 2, the Real-time Traffic Information screening technique that second embodiment of the invention is provided is introduced, and this method is that first embodiment of the invention provides the application of method in the RDS-TMC system.
In the RDS-TMC system, Real-time Traffic Information is carried in the RDS-TMC message and issues, in the RDS-TMC message, with the unique road of representing of position encoded+direction, with TMC event description Real-time Traffic Information.
See also Fig. 2, be the Real-time Traffic Information screening technique that second embodiment of the invention provides, this method comprises:
Step 201: from the state pond, read the TMC incident issued state that position encoded (Location Code) adds (+) direction correspondence, if described TMC incident issued state for issuing the TMC incident, then enters step 202, otherwise, enter step 205;
In embodiments of the present invention, the state pond is used to write down each Location Code+ direction and the information of the TMC incident issued, comprising: the issued state of TMC incident, TMC event code, the timestamp of TMC incident, duration of TMC incident or the like.
Step 202: judge Location Code+ direction time corresponding in the state pond is stabbed whether identical with Location Code+ direction time corresponding stamp in the long pond of single step, if it is identical, illustrate that the TMC incident that the corresponding road of Location Code+ direction issued is identical with the TMC incident to be released of this road, enter step 203, otherwise, enter step 204;
In embodiments of the present invention, the long pond of single step is used to write down the information of each Location Code+ direction and TMC incident to be released thereof, comprising: the timestamp of TMC incident to be released, TMC event code to be released etc.
In other embodiments of the invention, can also whether identical by the TMC event code of judging Location Code+ direction correspondence in long pond of single step and state pond, obtain the identical or different judged result of TMC incident.
Step 203: whether the duration of judging the TMC incident of the issue of Location Code+ direction correspondence in the state pond less than default end message effective time, if less than, then enter step 204, if greater than, step 205 then entered;
Step 204: abandon TMC incident to be released;
Step 205: add TMC incident to be released to set to be released.
More than the Real-time Traffic Information screening technique that provides for second embodiment of the invention.In the above-described embodiments, each TMC incident to be released all is the long incident of single step, the long incident of described single step is the TMC incident to be released of a Location Code+ direction, the Real-time Traffic Information of the corresponding road of this LocationCode+ direction of the long event description of this single step.In order to save the issue resource, the method that second embodiment of the invention provides after step 205 can further include:
The TMC incident identical to be released of adjacent Location Code+ direction in the set to be released is merged into the long TMC incident to be released of a multistep, just the Real-time Traffic Information that adjacent road is identical in the set to be released is merged into the long Real-time Traffic Information to be released of a multistep.
In embodiments of the present invention, the long TMC incident to be released of multistep is made of the long TMC incident+step-length to be released of the single step of a Location Code+ direction, this multistep has been grown TMC event description to be released from this Location Code, by assigned direction, be linked in sequence (adjacent) and the Real-time Traffic Information of TMC incident to be released is identical corresponding roads of several Location Code, wherein, the long TMC event description to be released of multistep the Real-time Traffic Information of several Location Code, then step-length just equals several.
In embodiments of the present invention, the TMC incident identical to be released of adjacent Location Code+ direction in the set to be released being merged into the long TMC incident to be released of multistep specifically comprises:
From set to be released, read a Location Code+ direction;
In the allocation list that presets, search the adjacent Location Code+ direction of this Location Code+ direction;
In set to be released, search the TMC incident to be released of described Location Code+ direction;
Whether the timestamp of judging TMC incident to be released is identical, if it is different, then finish this time to merge, change the next Location Code+ direction that reads in the set to be released over to, if the timestamp identical (illustrating that this N TMC incident to be released is identical) of the TMC incident to be released of the individual Location Code+ of N (more than or equal to 2) direction is arranged, then search initial Location Code+ direction in N the Location Code+ direction at allocation list, the TMC incident to be released of initial Location Code+ direction described in the set to be released is revised as TMC incident to be released adds step-length, step-length equals N, delete the TMC incident to be released of other N-1 Location Code+ directions, change the next Location Code+ direction that reads in the set to be released again over to, all Location Code+ direction in handling set to be released.
Such as, from set to be released, read a Location Code+ direction, in allocation list, find the Location Code+ direction adjacent and have 3 with this Location Code+ direction, and the TMC incident to be released of these 4 Location Code+ directions is all identical, then from allocation list, search the initial Location Code+ direction in these 4 Location Code+ directions, the TMC incident to be released of initial Location Code+ direction in the set to be released is revised as TMC incident+step-length 4 to be released, deletes the TMC incident to be released of other 3 Location Code+ directions.
Further, after obtaining the long TMC incident to be released of multistep, be published away as early as possible in order to make important TMC incident, said method can be further:
To the long TMC incident to be released of the multistep in the set to be released, sort according to its road priority order from high to low of carrying earlier, sort according to TMC incident (transport information) priority order from high to low again.
More than the Real-time Traffic Information screening technique that provides for the embodiment of the invention, after the set to be released after obtaining sorting, delivery system is at every turn from the set to be released after the ordering, take out the long TMC incident to be released of M bar multistep, structure M bar carries the RDS-TMC message of the long TMC incident to be released of described multistep, and described M bar RDS-TMC message is distributed to terminal, wherein, M can issue message amount the RDS issue passage unit interval.After successfully issuing the RDS-TMC message, also need earlier the long TMC incident to be released of described M bar multistep to be reduced to the long TMC incident of single step, then, the TMC incident issued state of the corresponding Location Code+ direction of the long TMC incident of described single step in the state pond upgraded, and the timestamp of described Location Code+ direction in the state pond changed to the timestamp of the long TMC incident of described single step.
More than the Real-time Traffic Information screening technique that provides for the embodiment of the invention, below in conjunction with accompanying drawing the Real-time Traffic Information screening plant that the embodiment of the invention provides is described in detail.
See also Fig. 3, be the Real-time Traffic Information screening plant that the embodiment of the invention provides, this device comprises:
Issued state judging unit 301, content distributed judging unit 302, information timeliness judging unit 303, information discarding unit 304, information adding device 305;
Issued state judging unit 301 is used to read the Real-time Traffic Information issued state of road, if described issued state is a Real-time Traffic Information of issuing described road, then triggers content distributed judging unit 302, otherwise, trigger message adding device 305;
Content distributed judging unit 302, be used to judge whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, when if the Real-time Traffic Information of issuing is identical with Real-time Traffic Information to be released, trigger message timeliness judging unit 303, otherwise trigger message adding device 305;
Information timeliness judging unit 303, whether the duration that is used to judge the Real-time Traffic Information of issuing less than default end message effective time, if less than, then trigger described information discarding unit 304, otherwise trigger message adding device 305;
More than the Real-time Traffic Information screening plant that provides for the embodiment of the invention, the resource for saving information issue passage may further include in above-mentioned screening plant:
The information merge cells is used for the Real-time Traffic Information to be released of set adjacent road to be released is merged into the long Real-time Traffic Information to be released of a multistep.
In order to issue important Real-time Traffic Information earlier, provide better service to the user, above-mentioned screening plant may further include: the information sorting unit;
The information sorting unit, be used for the long Real-time Traffic Information to be released of multistep to set to be released, sort according to its road priority order from high to low of carrying earlier, sort according to its Real-time Traffic Information priority order from high to low of carrying again.
More than the Real-time Traffic Information screening plant that provides for the embodiment of the invention, if this device is applied in the RDS-TMC system, then the method for work of each unit sees also the method that second embodiment of the invention provides, be that example is introduced with the information merge cells only, the information merge cells specifically comprises herein:
Position encoded reading unit is used for reading a position encoded direction that adds from set to be released;
Adjacent encoder is searched the unit, is used for searching the described position encoded direction position adjacent coding that adds at the allocation list that presets and adds direction;
The long incident generation unit of multistep, be used for searching the described position encoded TMC incident to be released that adds direction in set to be released, if there is the timestamp of the position encoded TMC incident to be released that adds direction of N identical, then search described N the position encoded reference position coding that adds in the direction and add direction at allocation list, the TMC incident to be released that reference position described in the set to be released coding is added direction is revised as TMC incident to be released and adds step-length, step-length equals N, and N is more than or equal to 2;
The long incident delete cells of single step is used for deleting other N-1 of set to be released the position encoded TMC incidents to be released that add direction.
More than a kind of Real-time Traffic Information screening technique provided by the invention and device are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. a Real-time Traffic Information screening technique is characterized in that, described method comprises:
Read the Real-time Traffic Information issued state of road, if described issued state is a Real-time Traffic Information of issuing described road, judge that then whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, if identical, then abandons described Real-time Traffic Information to be released.
2. screening technique as claimed in claim 1 is characterized in that, judgement obtain Real-time Traffic Information identical after, abandon before the described Real-time Traffic Information to be released, described method further comprises:
Whether the duration of judging Real-time Traffic Information issue less than the end message effective time of presetting, if less than, then abandon described Real-time Traffic Information to be released.
3. screening technique as claimed in claim 2 is characterized in that, described method further comprises:
The Real-time Traffic Information to be released that adjacent road in the set to be released is identical is merged into the long Real-time Traffic Information to be released of multistep.
4. screening technique as claimed in claim 3 is characterized in that, described method further comprises:
With the long Real-time Traffic Information to be released of the multistep in the set to be released, sort according to its road priority order from high to low of carrying earlier, sort according to its transport information priority order from high to low of carrying again.
5. as the described screening technique of each claim in the claim 1 to 4, it is characterized in that if with the position encoded direction indication road that adds, use TMC event description Real-time Traffic Information, the Real-time Traffic Information issued state that then reads road is specially:
From the state pond, read the position encoded TMC incident issued state that adds the direction correspondence.
6. screening technique as claimed in claim 5 is characterized in that, judges that the Real-time Traffic Information to be released of the Real-time Traffic Information issued and described road is whether identical specifically to comprise:
Judge whether identical the position encoded direction time corresponding stamp in the state pond that adds stabs with the described position encoded direction time corresponding in the long pond of single step that adds, if identical, illustrate that described position encoded to add the TMC incident that the corresponding road of direction issued identical with TMC incident to be released.
7. screening technique as claimed in claim 6 is characterized in that, the Real-time Traffic Information identical to be released of adjacent road in the set to be released is merged into the long Real-time Traffic Information to be released of multistep specifically comprise:
From set to be released, read a position encoded direction that adds;
In the allocation list that presets, search the described position encoded direction position adjacent coding that adds and add direction;
In set to be released, search the described position encoded TMC incident to be released that adds direction, if there is N the position encoded time that adds the TMC incident to be released of direction to kill identical, then search described N the position encoded reference position coding that adds in the direction and add direction at allocation list, the TMC incident to be released that reference position described in the set to be released coding is added direction is revised as TMC incident to be released and adds step-length, step-length equals N, delete other N-1 the position encoded TMC incidents to be released that add direction, N is more than or equal to 2.
8. a Real-time Traffic Information screening plant is characterized in that, described screening plant comprises: issued state judging unit, content distributed judging unit, information discarding unit;
Described issued state judging unit is used to read the Real-time Traffic Information issued state of road, if described issued state is a Real-time Traffic Information of issuing described road, then triggers described content distributed judging unit;
Described content distributed judging unit is used to judge whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road;
Described information discarding unit is used to abandon the to be released Real-time Traffic Information identical with the Real-time Traffic Information of issuing.
9. screening plant as claimed in claim 8 is characterized in that, described screening plant further comprises: the information timeliness judging unit;
Described content distributed judging unit when the Real-time Traffic Information that obtains issuing in judgement is identical with Real-time Traffic Information to be released, triggers described information timeliness judging unit;
Described information timeliness judging unit, whether the duration that is used to judge the Real-time Traffic Information of issuing less than default end message effective time, if less than, then trigger described information discarding unit.
10. screening plant as claimed in claim 9 is characterized in that, described screening plant further comprises: the information merge cells;
Described information merge cells is used for the Real-time Traffic Information identical to be released of set adjacent road to be released is merged into the long Real-time Traffic Information to be released of multistep.
11. screening plant as claimed in claim 10 is characterized in that, if with the position encoded direction indication road that adds, use TMC event description Real-time Traffic Information, then described information merge cells specifically comprises:
Position encoded reading unit is used for reading a position encoded direction that adds from set to be released;
Adjacent encoder is searched the unit, is used for searching the described position encoded direction position adjacent coding that adds at the allocation list that presets and adds direction;
The long incident generation unit of multistep, be used for searching the described position encoded TMC incident to be released that adds direction in set to be released, if there is the timestamp of the position encoded TMC incident to be released that adds direction of N identical, then search described N the position encoded reference position coding that adds in the direction and add direction at allocation list, the TMC incident to be released that reference position described in the set to be released coding is added direction is revised as TMC incident to be released and adds step-length, step-length equals N, and N is more than or equal to 2;
The long incident delete cells of single step is used for deleting other N-1 of set to be released the position encoded TMC incidents to be released that add direction.
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| CN103944658A (en) * | 2013-01-23 | 2014-07-23 | 昆达电脑科技(昆山)有限公司 | Message broadcast method |
| CN109872569A (en) * | 2019-01-04 | 2019-06-11 | 哈瓦国际航空技术（深圳）有限公司 | A kind of unmanned aerial vehicle station voice broadcast method, device, equipment and storage medium |
| CN111415521A (en) * | 2019-01-04 | 2020-07-14 | 阿里巴巴集团控股有限公司 | Method and device for selecting traffic information distribution road and electronic equipment |
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