CN102236967B - 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 intelligent transport technology field, relate in particular to a kind of Real-time Traffic Information screening technique and device.
Background technology
Along with the expansion day by day of economic fast 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, people's car contradiction and bus or train route contradiction.
Along with the widespread use of computing machine, information and communication technology (ICT), people are just being devoted to utilize a kind of new technology to improve the service efficiency of path resource, improve 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 by 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 according to the data of road electronic map database, cook up the optimum road that arrives destination, and by optimum road, vehicle are directed to destination.In the past, because the Real-time Traffic Informations such as traffic hazard, road congestion, road construction, traffic control can not offer Vehicular navigation system in time, make Vehicular navigation system almost be difficult to that user provides thoughtfully, efficient navigation Service.In recent years, radio data system (Radio Data System, RDS) development is rapid, for the realization of automobile dynamic navigation provides the foundation.
RDS is the Radio Data System of European Broadcasting Union's tissue (European Broadcasting Union, EBU) exploitation.It by traffic message channel (Traffic Message Channel, TMC) carry out digitizing, noiseless Real-time Traffic Information is issued, and does not interfere audio broadcasting.The Vehicular navigation system that possesses 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 to current driving route is represented to driver with user language or visual mode.
At present, Eurocities uses RDS-TMC system in a large number, carry out in research and practice process at the Real-time Traffic Information publishing policy that European RDS-TMC system is adopted, inventor finds that European RDS-TMC system is in the time that the RDS-TMC message of Real-time Traffic Information is carried in transmission, employing arrives first the strategy that message is first issued, although RDS-TMC issues the limited amount of passage unit interval issue RDS-TMC message, but because Eurocities scale is generally less, correspondingly, the quantity of RDS-TMC message is also less, therefore, Europe RDS-TMC system can be issued all RDS-TMC messages in official hour.But for the Chinese city of, urban road situation complexity large for city size, RDS-TMC quantities of messages is very large, if adopt the general Real-time Traffic Information publishing policy in Europe, 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 not, reduce the reliability of automobile dynamic navigation.
Summary of the invention
The technical matters that the embodiment of the present invention will solve is to provide a kind of Real-time Traffic Information screening technique and device, can reject and there is no need the Real-time Traffic Information issued, thereby make that delivery system can be issued more effectively within the limited time, Real-time Traffic Information more fully.
For solving the problems of the technologies described above, the object of the invention is to be achieved through the following technical solutions:
The embodiment of the present 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 the Real-time Traffic Information of issuing described road, judge that whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, if identical, abandon described Real-time Traffic Information to be released.
The embodiment of the present 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, for reading the Real-time Traffic Information issued state of road, if described issued state is the Real-time Traffic Information of issuing described road, triggers described content distributed judging unit;
Whether described content distributed judging unit is identical with the Real-time Traffic Information to be released of described road for judging the Real-time Traffic Information of issuing;
Described information discarding unit, for abandoning 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 present invention provides, first judge the Real-time Traffic Information issued state of road, if issued state is the Real-time Traffic Information of issuing this road, judge that 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, necessity that this Real-time Traffic Information to be released is not issued is described, can abandons.Because the technical scheme that the embodiment of the present invention provides has been rejected the Real-time Traffic Information that there is no need issue, the total amount of Real-time Traffic Information to be released is reduced, thereby make that delivery system can be issued more effectively within the limited time, Real-time Traffic Information more fully, improve the reliability of automobile dynamic navigation.
Accompanying drawing explanation
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;
The Real-time Traffic Information screening plant composition schematic diagram that Fig. 3 provides for the embodiment of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, the technical scheme embodiment of the present invention being provided referring to accompanying drawing is elaborated.
Referring to Fig. 1, is the Real-time Traffic Information screening technique process flow diagram that first embodiment of the invention provides, and the method comprises:
Step 101: read the Real-time Traffic Information issued state of road, if described issued state is the Real-time Traffic Information of issuing described road, enter step 102, 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, that is caused by accident blocks up) and the order of severity (such as, the queue length causing) etc.
Step 102: judge that whether the Real-time Traffic Information that road issued is identical with Real-time Traffic Information to be released, if identical, enter step 103, otherwise, enter step 105;
In embodiments of the present invention, the Real-time Traffic Information of issuing refers to: carry out this and issue the Real-time Traffic Information of once issuing before flow process.
Step 103: whether the duration that judges the Real-time Traffic Information of issuing is less than default end message effective time, if be less than, enters step 104, if be greater than, enters step 105;
Terminal (such as, radio station, Vehicular navigation system) receive after the Real-time Traffic Information of road, if the duration of this Real-time Traffic Information is within default end message effective time, terminal will be reported this Real-time Traffic Information, once and the duration of this Real-time Traffic Information has exceeded default end message effective time, terminal thinks that this Real-time Traffic Information lost efficacy.Such as, terminal receives that the Real-time Traffic Information in certain section is for blocking up, when duration of this information is within default end message effective time, the Real-time Traffic Information that terminal is reported this section is " congestion in road ", exceed default end message effective time when the duration of this information, terminal will think that this section does not exist jam, the Real-time Traffic Information that terminal is reported this section may be " section is unimpeded ", but real road situation may be that this section is still for blocking up, report wrong Real-time Traffic Information for fear of terminal, when step 102 judgement obtains Real-time Traffic Information that Real-time Traffic Information to be released receives with terminal when identical, whether 103 duration that determine the Real-time Traffic Information of issuing were provided in the method that need to provide in the embodiment of the present invention is greater than default end message effective time, if be greater than, even if twice of front and back Real-time Traffic Information is identical, also need that Real-time Traffic Information to be released is added into set to be released and re-start issue.But, it should be noted that, it is to report the problem of wrong Real-time Traffic Information for further solving terminal that the embodiment of the present invention adds step 103, that is to say, for solving the problem of " reject and do not issue necessary Real-time Traffic Information " that the present invention will solve, this step is non-essential.
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.
The Real-time Traffic Information screening technique providing for first embodiment of the invention above, the method is by deleting the 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 that delivery system can be issued more effectively in official hour, 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 can reserve part should again issue, 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 the method is the application of first embodiment of the invention supplying method in RDS-TMC system.
In RDS-TMC system, Real-time Traffic Information is carried in RDS-TMC message and issues, in RDS-TMC message, with the unique road that represents of position encoded+direction, with TMC event description Real-time Traffic Information.
Referring to Fig. 2, is the Real-time Traffic Information screening technique that second embodiment of the invention provides, and the method comprises:
Step 201: from state pond, read position encoded (Location Code) and add TMC event issued state corresponding to (+) direction, if described TMC event issued state is for issuing TMC event, enter step 202, otherwise, enter step 205;
In embodiments of the present invention, state pond, for recording each Location Code+ direction and the information of the TMC event issued, comprising: the issued state of TMC event, TMC event code, the timestamp of TMC event, duration of TMC event etc.
Step 202: whether identically judge that Location Code+ direction corresponding timestamp and Location Code+ direction in state pond are grown timestamp corresponding in pond in single step, if identical, illustrate that the TMC event that the corresponding road of Location Code+ direction issued is identical with the TMC event 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, for recording the information of each Location Code+ direction and TMC event to be released thereof, comprising: the timestamp of TMC event to be released, TMC event code to be released etc.
In other embodiments of the invention, can also be whether identical by judging the TMC event code of Location Code+ direction correspondence in the long pond of single step and state pond, obtain the identical or different judged result of TMC event.
Step 203: whether the duration that judges the TMC event of issue corresponding to Location Code+ direction in state pond is less than default end message effective time, if be less than, enters step 204, if be greater than, enters step 205;
Step 204: abandon TMC event to be released;
Step 205: add TMC event to be released to set to be released.
The Real-time Traffic Information screening technique providing for second embodiment of the invention above.In the above-described embodiments, each TMC event to be released is the long event of single step, the long event of described single step is the TMC event 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 issue resource, the method that second embodiment of the invention provides after step 205 can further include:
Be the long TMC event to be released of a multistep by the TMC event merge identical to be released of adjacent Location Code+ direction in set to be released, namely the Real-time Traffic Information that in set to be released, adjacent road is identical merged into the long Real-time Traffic Information to be released of a multistep.
In embodiments of the present invention, the long TMC event to be released of multistep is made up of the long TMC event+step-length to be released of 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 event 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, step-length just equals several.
In embodiments of the present invention, be that the long TMC event to be released of multistep specifically comprises by the TMC event merge identical to be released of adjacent Location Code+ direction in set to be released:
From set to be released, read a Location Code+ direction;
In preset allocation list, search the Location Code+ direction that this Location Code+ direction is adjacent;
In set to be released, search the TMC event to be released of described Location Code+ direction;
Whether the timestamp that judges TMC event to be released is identical, if different, finish this time to merge, proceed to the next Location Code+ direction reading in set to be released, if there is the timestamp identical (illustrating that this N TMC event to be released is identical) of the TMC event to be released of the individual Location Code+ direction of N (being more than or equal to 2), search the initial Location Code+ direction in N Location Code+ direction at allocation list, the TMC event to be released of initial Location Code+ direction described in set to be released is revised as to TMC event to be released and adds step-length, step-length equals N, delete the TMC event to be released of other N-1 Location Code+ directions, proceed to again the next Location Code+ direction reading in set to be released, until handle Location Code+ directions all in 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 with this Location Code+ direction and have 3, and the TMC event to be released of these 4 Location Code+ directions is all identical, from allocation list, search the initial Location Code+ direction in these 4 Location Code+ directions, the TMC event to be released of initial Location Code+ direction in set to be released is revised as to TMC event+step-length 4 to be released, delete the TMC event to be released of other 3 Location Code+ directions.
Further, obtaining after the long TMC event to be released of multistep, for important TMC event is published away as early as possible, said method can be further:
To the long TMC event to be released of the multistep in set to be released, the road priority of first carrying according to it order from high to low sorts, then sorts according to TMC event (transport information) priority order from high to low.
The Real-time Traffic Information screening technique providing for the embodiment of the present invention above, after set to be released after being sorted, delivery system is at every turn from the set to be released sequence, take out the long TMC event to be released of M bar multistep, structure M bar carries the RDS-TMC message of the long TMC event 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.Successfully issuing after RDS-TMC message, also need first long described M bar multistep TMC event to be released to be reduced to the long TMC event of single step, then, TMC event issued state to the corresponding Location Code+ of the long TMC event of described single step direction in state pond upgrades, and the timestamp in state pond changes to the timestamp of the long TMC event of described single step by described Location Code+ direction.
The Real-time Traffic Information screening technique providing for the embodiment of the present invention above, the Real-time Traffic Information screening plant embodiment of the present invention being provided below in conjunction with accompanying drawing describes in detail.
Referring to Fig. 3, is the Real-time Traffic Information screening plant that the embodiment of the present invention provides, and 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, for reading the Real-time Traffic Information issued state of road, if described issued state is the Real-time Traffic Information of issuing described road, triggers content distributed judging unit 302, otherwise, trigger message adding device 305;
Content distributed judging unit 302, for judging that whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, if when 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, for judging whether the duration of the Real-time Traffic Information of issuing be less than default end message effective time, if be less than, triggers described information discarding unit 304, otherwise trigger message adding device 305;
The Real-time Traffic Information screening plant providing for the embodiment of the present invention above for the resource of saving information issue passage, may further include in above-mentioned screening plant:
Information merge cells, for merging into the Real-time Traffic Information to be released of set adjacent road to be released the long Real-time Traffic Information to be released of a multistep.
In order first to issue important Real-time Traffic Information, provide better service to user, above-mentioned screening plant may further include: information sorting unit;
Information sorting unit, for the multistep length Real-time Traffic Information to be released to set to be released, the road priority of first carrying according to it order from high to low sorts, then the Real-time Traffic Information priority of carrying according to it order from high to low sorts.
The Real-time Traffic Information screening plant providing for the embodiment of the present invention above, if by this application of installation in RDS-TMC system, the method of work of unit refers to the method that second embodiment of the invention provides, only be introduced as an example of information merge cells example, information merge cells specifically comprises herein:
Position encoded reading unit, for reading a position encoded direction that adds from set to be released;
Adjacent encoder is searched unit, for search the described position encoded position encoded direction that adds that direction is adjacent that adds at preset allocation list;
The long event generation unit of multistep, for searching the described position encoded TMC event to be released that adds direction in set to be released, if there is the timestamp of N the position encoded TMC event to be released that adds direction identical, search described N the position encoded reference position coding adding in direction at allocation list and add direction, the TMC event to be released that reference position described in set to be released coding is added to direction is revised as TMC event to be released and adds step-length, step-length equals N, and N is more than or equal to 2;
The long event delete cells of single step, for deleting other N-1 of set to be released the position encoded TMC events to be released that add direction.
Above 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, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
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 the Real-time Traffic Information of issuing described road, judge that whether the Real-time Traffic Information of issuing is identical with the Real-time Traffic Information to be released of described road, if different, add described Real-time Traffic Information to be released to set to be released; If identical, judge whether the duration of the Real-time Traffic Information of issuing is less than default end message effective time, if be less than, abandon described Real-time Traffic Information to be released; Otherwise, add described Real-time Traffic Information to be released to set to be released.
2. screening technique as claimed in claim 1, is characterized in that, described method further comprises:
Real-time Traffic Information to be released identical adjacent road in set to be released is merged into the long Real-time Traffic Information to be released of multistep.
3. screening technique as claimed in claim 2, is characterized in that, described method further comprises:
By long the multistep in set to be released Real-time Traffic Information to be released, the road priority of first carrying according to it order from high to low sorts, then the transport information priority of carrying according to it order from high to low sorts.
4. the screening technique as described in any one claim in claims 1 to 3, 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 reads road is specially:
From state pond, read position encoded TMC event issued state corresponding to direction that add.
5. screening technique as claimed in claim 4, is characterized in that, judges whether the Real-time Traffic Information to be released of the Real-time Traffic Information issued and described road is identical specifically to comprise:
Judge that the position encoded direction corresponding timestamp in state pond that adds position encodedly adds direction whether grow timestamp corresponding in pond in single step identical with described, if identical, illustrate that described position encoded to add the TMC event that the corresponding road of direction issued identical with TMC event to be released.
6. screening technique as claimed in claim 5, is characterized in that, the Real-time Traffic Information identical to be released of adjacent road in set to be released is merged into the long Real-time Traffic Information to be released of multistep and specifically comprise:
From set to be released, read a position encoded direction that adds;
In preset allocation list, search the described position encoded position encoded direction that adds that direction is adjacent that adds;
In set to be released, search the described position encoded TMC event to be released that adds direction, if there is the timestamp of N the position encoded TMC event to be released that adds direction identical, search described N the position encoded reference position coding adding in direction at allocation list and add direction, the TMC event to be released that reference position described in set to be released coding is added to direction is revised as TMC event to be released and adds step-length, step-length equals N, delete other N-1 the position encoded TMC events to be released that add direction, N is more than or equal to 2.
7. a Real-time Traffic Information screening plant, is characterized in that, described screening plant comprises: issued state judging unit, content distributed judging unit, information timeliness judging unit, information discarding unit, information adding device;
Described issued state judging unit, for reading the Real-time Traffic Information issued state of road, if described issued state is the Real-time Traffic Information of issuing described road, triggers described content distributed judging unit;
Whether described content distributed judging unit is identical with the Real-time Traffic Information to be released of described road for judging the Real-time Traffic Information of issuing; When the Real-time Traffic Information that obtains issuing in judgement is identical with Real-time Traffic Information to be released, trigger described information timeliness judging unit; Otherwise, trigger described information adding device;
Described information timeliness judging unit, for judging whether the duration of the Real-time Traffic Information of issuing be less than default end message effective time, if be less than, triggers described information discarding unit; Otherwise, trigger described information adding device;
Described information discarding unit, for abandoning the to be released Real-time Traffic Information identical with the Real-time Traffic Information of issuing;
Described information adding device; For adding the Real-time Traffic Information to be released of described road to set to be released.
8. screening plant as claimed in claim 7, is characterized in that, described screening plant further comprises: information merge cells;
Described information merge cells, for merging into the Real-time Traffic Information identical to be released of set adjacent road to be released the long Real-time Traffic Information to be released of multistep.
9. screening plant as claimed in claim 8, is characterized in that, if with the position encoded direction indication road that adds, use TMC event description Real-time Traffic Information, described information merge cells specifically comprises:
Position encoded reading unit, for reading a position encoded direction that adds from set to be released;
Adjacent encoder is searched unit, for search the described position encoded position encoded direction that adds that direction is adjacent that adds at preset allocation list;
The long event generation unit of multistep, for searching the described position encoded TMC event to be released that adds direction in set to be released, if there is the timestamp of N the position encoded TMC event to be released that adds direction identical, search described N the position encoded reference position coding adding in direction at allocation list and add direction, the TMC event to be released that reference position described in set to be released coding is added to direction is revised as TMC event to be released and adds step-length, step-length equals N, and N is more than or equal to 2;
The long event delete cells of single step, for deleting other N-1 of set to be released the position encoded TMC events 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 |
| CN111415521B (en) * | 2019-01-04 | 2022-08-02 | 阿里巴巴集团控股有限公司 | Method and device for selecting traffic information distribution road and electronic equipment |
| 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 |
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