CN101982844B - Method and device for identifying road congestion conditions - Google Patents
Method and device for identifying road congestion conditions Download PDFInfo
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- CN101982844B CN101982844B CN2010105344708A CN201010534470A CN101982844B CN 101982844 B CN101982844 B CN 101982844B CN 2010105344708 A CN2010105344708 A CN 2010105344708A CN 201010534470 A CN201010534470 A CN 201010534470A CN 101982844 B CN101982844 B CN 101982844B
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Abstract
The invention discloses a method and a device for identifying road congestion conditions, which relates to the field of information processing and aims at solving the problem of difficult real-time road monitoring. The method comprises the following steps: setting a positioning system on a vehicle; cutting a global traffic map including the road information and matching with the position of the vehicle with the positioning system; searching for the moving speed of the vehicle with the positioning system on the road; setting a congestion judgment threshold; if the vehicle moving speed is lower than the congestion judgment threshold, judging that the road is congested; if the vehicle moving speed is higher than the congestion judgment threshold, judging that the road is clear; cutting a regional traffic map and matching the cut regional traffic map with the matched global traffic map again to obtain the traffic information of the regional traffic map and storing the regional traffic map in a database; inquiring the traffic information from the regional traffic map of the database according to the inquiry data of a user; and presenting the traffic information to the user. The invention is applicable to a traffic monitoring system.
Description
Technical field
The present invention relates to field of information processing, relate in particular to a kind of method and apparatus of discerning the congestion in road situation.
Background technology
Along with the raising of urban development and people's income level, the recoverable amount of private car is increasing.The traffic pressure in city on the other side is also increasing; Especially going on a journey peak period; Usually can be cause and block up at some crucial transport node because vehicle flowrate is excessive, how can fully understand current whole traffic circulation state and fast traffic jam position, location become the key of current traffic administration to be topic.
Summary of the invention
Embodiments of the invention provide a kind of method and apparatus of discerning the congestion in road situation, can fully understand current whole traffic circulation state and locate the traffic jam position fast.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of discerning the congestion in road situation comprises:
Positioning system is set on vehicle;
Cutting comprises the overall traffic map of road information, matees with the vehicle location that is provided with positioning system;
Search road and be provided with the translational speed of the vehicle of positioning system;
The setting discrimination threshold that blocks up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up, judges that vehicle place road is for blocking up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed;
The clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up;
According to user's data query regional traffic map inquiry transport information to database;
Transport information is presented to the user.
A kind of device of discerning the congestion in road situation comprises:
Positioning unit: be used on vehicle, being provided with positioning system;
Search unit: be used to search the translational speed that road is provided with the vehicle of positioning system;
The first cutting unit: be used for the overall traffic map that cutting comprises road information, mate with the vehicle location that is provided with positioning system;
Judging unit: be used for setting the discrimination threshold that blocks up,, judge that vehicle place road is for blocking up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed;
The second cutting unit: be used for the clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up;
Query unit: be used for according to user's data query regional traffic map inquiry transport information to database;
Display unit: be used for transport information is presented to the user.
The method and apparatus of the identification congestion in road situation that the embodiment of the invention provides can fully understand current whole traffic circulation state and locate the traffic jam position fast through understanding the current forms of status on road of vehicle.
Description of drawings
Fig. 1 discerns the process flow diagram of the method embodiment of congestion in road situation for the present invention.
Fig. 2 is the process flow diagram of step 102 among the inventive method embodiment.
Fig. 2 a is Suzhou administrative map layer and map interlinking layer synoptic diagram.
The mesh column hoist pennants that Fig. 2 b covers for the Suzhou administrative division.
Fig. 2 c is that R table normative document changes the procedure file synoptic diagram that mapinfo generates over to.
Fig. 2 d is the field synoptic diagram as a result of the pairing R table of the map sheet data that intersect of cutting and user's data query.
Fig. 3 discerns the structural representation of the device embodiment of congestion in road situation for the present invention.
Fig. 4 is the structural representation of map lead-out unit among apparatus of the present invention embodiment.
Embodiment
Be described in detail below in conjunction with the method and apparatus of accompanying drawing embodiment of the invention identification congestion in road situation.
The present invention discerns the method embodiment of congestion in road situation, and is as shown in Figure 1, comprising:
S101, positioning system is set on vehicle.
Said positioning system can be the GPS positioning system.
S102, cutting comprise the overall traffic map of road information, mate with the vehicle location that is provided with positioning system.
Said road information information comprises road name, direction, length and landmark building and significant natural scene on every side.
S103, search the translational speed that road is provided with the vehicle of positioning system.
At first same road is provided with at least twice instantaneous velocity of at least one vehicle of positioning system, then at least twice instantaneous velocity of said at least one vehicle is averaged, and obtains the translational speed of vehicle on the road.
S104, set the discrimination threshold that blocks up,, judge that vehicle place road is for blocking up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed.
The said discrimination threshold that blocks up can be empirical value or statistical value.
S105, clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up.
Said regional traffic map is the reduced graph of overall traffic map; The a part of parameter that only keeps overall traffic map; Such as, overall traffic map is for covering the universe road network map in certain city, and the regional traffic map just can be the major trunk roads road network map that covers this city.
The selection standard of said major trunk roads is set by the supvr, can comprise expressway and traffic major trunk roads such as national highway, provincial highway, can also suitably filter out the parameter in some overall traffic maps according to actual needs during cutting.
S106, according to user's data query regional traffic map inquiry transport information to database.
Said user's data query can be the graphical query data, also can be the text query data.
S107, transport information is presented to the user.
Present embodiment can fully understand current whole traffic circulation state and locate the traffic jam position fast through understanding the current forms of status on road of vehicle.
Step 106 is as shown in Figure 2, comprising:
S201, obtain the data query of background application, the map sheet that intersects with the data query of background application in the index search database.
For example, the data query of background application is Suzhou City's traffic, at first in database, searches two figure layers of Suzhou administrative map layer and map interlinking layer (covering the grid tabulation in the whole nation), obtains the figure shown in Fig. 2 a.Search the map sheet that Suzhou administrative map layer intersects then, the grid that Suzhou administrative division is just covered, the result schemes the grid scope that the left side covers for the Suzhou administrative division shown in Fig. 2 b, and the figure right side is the map sheet tabulation corresponding with the left side grid.
S202, be written into the corresponding R table data of map sheet that intersect with the data query of background application, obtain the field that R shows data, comprise field number and field contents.
Wherein the R table is data of depositing digital navigation map, is standard format (* .mif) data file.Import R table normative document and change mapinfo (* .mif) over to; Generate a procedure file (* .tab), this procedure file comprises at least 5 fields (5 files shown in Fig. 2 c; Showing in the drawings of other), be not respectively MapID, ID, Length, PathName, Kind etc.Read all fields of R table data, comprise field number and field contents.It is pointed out that R literary name section number and field contents can be expanded or reduce as required in the practical application, but putting in order between the field is constant, MapID comes before the ID, and ID comes before the Length ...
After the field number and field contents of the data query of S203, interpretation background application, the field of the pairing R table of the map sheet that the data query of cutting and background application intersects data comprises field number and field contents.
The data query of background application is Suzhou City's traffic, and system's interpretation is 8 to the field number of this inquiry, is respectively MapID, ID, Kind_num, Kind, Width, Direction, Toll, Const_S.The field of the pairing R table of the map sheet that the data query of cutting and background application intersects data, the result is shown in Fig. 2 d, and the figure left side is field number and field contents, and the figure right side is corresponding Suzhou City's traffic condition diagram.
The field of S204, the pairing R table of the map sheet data that intersect with the data query of standard format files output and background application comprises field number and field contents.
Directly Fig. 2 d is exported as standard mif formatted file again.
Can also reresent background application and whether carry out other inquiry.
The enforcement of step 201-204 is write based on MAPINFO secondary development language MAPBASIC; Realization is to efficient, accurate, the intelligentized cutting work of all kinds of traffic information datas; The interior digital navigation map data message of specified scope that the cutting user is required is realized the requirement of disposable completion outputting standard formatted data.Effective combination through the SQL+MAPBASIC language; The standard format files of the traffic information data in all kinds of AOI of automatic integratedization output; Simplify the overall process of pure manual troublesome operation; Avoiding the people is possible of maloperation, provides and effectively is located in the reason mode for obtaining in the region-of-interest all kinds of transport information effectively, quickly, realizes foolproof implementation.
The present invention discerns the embodiment of the device of congestion in road situation, and is as shown in Figure 3, comprising:
Positioning unit 301: be used on vehicle, being provided with positioning system.
The first cutting unit 302: be used for the overall traffic map that cutting comprises road information, mate with the vehicle location that is provided with positioning system.
Search unit 303: be used to search the translational speed that road is provided with the vehicle of positioning system.
Judging unit 304: be used for setting the discrimination threshold that blocks up,, judge that vehicle place road is for blocking up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed.
The second cutting unit 305: be used for the clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up.
Query unit 306: be used for data query according to the user to the data base querying transport information.
Display unit 307: be used for transport information is presented to the user.
Concrete, as shown in Figure 4, the first cutting unit 302 comprises:
Search subelement 401: be used to obtain the data query of background application, search in the database map sheet that the data query with background application intersects;
Obtain subelement 402: be used to be written into the corresponding R table data of map sheet that intersect with the data query of background application, obtain the field of R table data, comprise field number and field contents;
Interpretation subelement 403: after being used for the field number and field contents of data query of interpretation background application, the field of the pairing R table of the map sheet that the data query of cutting and background application intersects data comprises field number and field contents;
Output subelement 404: be used for field, comprise field number and field contents with the pairing R table of the crossing map sheet of the standard format files output and the data query of background application data.
More than the workflow of device embodiment is referring to method embodiment.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a method of discerning the congestion in road situation is characterized in that, comprising:
Positioning system is set on vehicle;
Cutting comprises the overall traffic map of road information, matees with the vehicle location that is provided with positioning system;
Search road and be provided with the translational speed of the vehicle of positioning system;
The setting discrimination threshold that blocks up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up, judges that vehicle place road is for blocking up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed;
The clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up;
According to user's data query regional traffic map inquiry transport information to database;
Transport information is presented to the user.
2. according to the said method of claim 1, it is characterized in that the overall traffic map that cutting comprises road information comprises:
Obtain the data query of background application, search in the database map sheet that the data query with background application intersects;
Be written into the corresponding R table data of map sheet that intersect with the data query of background application, obtain the field of R table data, comprise field number and field contents, wherein the R table is data of depositing digital navigation map, is the standard data file;
After the field number and field contents of the data query of interpretation background application, the field of the pairing R table of the map sheet that the data query of cutting and background application intersects data comprises field number and field contents;
Field with the pairing R table of the crossing map sheet of the standard format files output and the data query of background application data comprises field number and field contents.
3. according to the said method of claim 2, it is characterized in that said user's data query comprises graphical query data and text query data.
4. according to the said method of claim 1, it is characterized in that, search the translational speed that road is provided with the vehicle of positioning system and comprise:
Search at least twice the instantaneous velocity that same road is provided with at least one vehicle of positioning system;
At least twice instantaneous velocity to said at least one vehicle is averaged, and obtains the translational speed of vehicle on the road.
5. a device of discerning the congestion in road situation is characterized in that, comprising:
Positioning unit: be used on vehicle, being provided with positioning system;
The first cutting unit: be used for the overall traffic map that cutting comprises road information, mate with the vehicle location that is provided with positioning system;
Search unit: be used to search the translational speed that road is provided with the vehicle of positioning system;
Judging unit: be used for setting the discrimination threshold that blocks up,, judge that vehicle place road is for blocking up if the translational speed of said vehicle is lower than the discrimination threshold that blocks up; If the translational speed of said vehicle is higher than the discrimination threshold that blocks up, judge that vehicle place road is unobstructed;
The second cutting unit: be used for the clipping region traffic map; Said regional traffic map only keeps the major trunk roads position; Overall traffic map after regional traffic map after the cutting and the coupling is mated once more; The transport information that obtains the regional traffic map deposits database in, and it is perhaps unobstructed that the transport information of said regional traffic map comprises that major trunk roads block up;
Query unit: be used for according to user's data query regional traffic map inquiry transport information to database;
Display unit: be used for transport information is presented to the user.
6. according to the said device of claim 5, it is characterized in that the first cutting unit comprises:
Search subelement: be used to obtain the data query of background application, search in the database map sheet that the data query with background application intersects;
Obtain subelement: be used to be written into the corresponding R table data of map sheet that intersect with the data query of background application, obtain the field of R table data, comprise field number and field contents, wherein the R table is data of depositing digital navigation map, is the standard data file;
The interpretation subelement: after being used for the field number and field contents of data query of interpretation background application, the field of the pairing R table of the map sheet that the data query of cutting and background application intersects data comprises field number and field contents;
Output subelement: be used for field, comprise field number and field contents with the pairing R table of the crossing map sheet of the standard format files output and the data query of background application data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105344708A CN101982844B (en) | 2010-11-03 | 2010-11-03 | Method and device for identifying road congestion conditions |
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| CN2010105344708A CN101982844B (en) | 2010-11-03 | 2010-11-03 | Method and device for identifying road congestion conditions |
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| CN101982844B true CN101982844B (en) | 2012-05-23 |
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| KR20150022168A (en) * | 2013-08-22 | 2015-03-04 | 현대모비스 주식회사 | Apparatus and method for controlling automatic steering |
| CN103903465B (en) * | 2014-04-17 | 2016-04-27 | 北京易华录信息技术股份有限公司 | A kind of congestion in road reason real-time release method and system |
| CN104408923B (en) * | 2014-12-03 | 2018-01-26 | 百度在线网络技术（北京）有限公司 | Traffic behavior appraisal procedure and device |
| CN107578624A (en) * | 2017-09-15 | 2018-01-12 | 杭州分数科技有限公司 | Urban transportation management-control method, apparatus and system |
| JP6965735B2 (en) * | 2017-12-26 | 2021-11-10 | トヨタ自動車株式会社 | Information processing equipment, in-vehicle equipment and information processing methods |
| CN110047276B (en) * | 2019-03-11 | 2020-11-27 | 广州文远知行科技有限公司 | Method and device for determining congestion state of obstacle vehicle and related product |
| CN110096561A (en) * | 2019-04-23 | 2019-08-06 | 武昌理工学院 | A kind of intelligent Web Map service system, method and computer storage medium |
| CN111462498B (en) * | 2020-05-29 | 2021-08-20 | 青岛大学 | Frequent congestion area identification method and equipment |
| CN116403412B (en) * | 2023-06-08 | 2023-09-19 | 深圳金三立视频科技股份有限公司 | Vehicle congestion detection method and terminal |
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| JP2006285567A (en) * | 2005-03-31 | 2006-10-19 | Hitachi Ltd | Data processing system of probe traffic information, data processor of probe traffic information, and data processing method of probe traffic information |
| US20070294023A1 (en) * | 2006-06-19 | 2007-12-20 | Navteq North America, Llc | Traffic data collection with probe vehicles |
| CN1975801B (en) * | 2006-12-29 | 2014-05-07 | 冯鲁民 | City traffic information service system |
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