CN102768797B - A kind of urban road condition information evaluation method and device - Google Patents
A kind of urban road condition information evaluation method and device Download PDFInfo
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- CN102768797B CN102768797B CN201210008098.6A CN201210008098A CN102768797B CN 102768797 B CN102768797 B CN 102768797B CN 201210008098 A CN201210008098 A CN 201210008098A CN 102768797 B CN102768797 B CN 102768797B
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Abstract
The embodiment of the invention discloses a kind of urban road condition information evaluation method and device, belong to intelligent transportation field.Method comprises: load the sample data recorded in the equipment containing satellite positioning functions; Position in sample data and directional information are mated with place road network, thus obtains corresponding road conditions coupling section, make speed corresponding in sample data become the reference speed of this section at this moment real road passage rate.Compare analysis with reference to the road conditions speed provided in speed and traffic information service, thus evaluate the accuracy of road conditions service.The sample trace information that the present invention is travelled in each road conditions by mobile traffics such as the equipment registration of vehicle containing satellite positioning functions such as PND, the actual road conditions of these sections in particular moment can be determined, greatly reduce the degree of participation of human factor, make the evaluation result that obtains just objective, and be convenient to user's enforcement, availability is strong, enhances the experience of user.
Description
Technical field
The present invention relates to intelligent transportation field, particularly relate to a kind of urban road condition information evaluation method and device.
Background technology
Along with the development that deepens continuously of urbanization process, also for municipal intelligent traffic development provides good opportunity, but due to the swift and violent growth of vehicle, flow, traffic conflict is also very outstanding, in this case, intelligent transportation system is arisen at the historic moment, and intelligent transportation system can according to the real-time dynamic traffic stream information detected for user points out whether current road conditions block up.
But, when use intelligent transportation system, reliability according to the traffic information of real-time dynamic traffic stream information acquisition just seems particularly important, if user drives to do field test, because the data of test and comparison are very limited for the data that intelligent transportation road conditions service provider provides, so the result obtained is often more unilateral, conclusion and the evaluation of science can not be drawn, and user has had more human factor when judging condition of road surface, add the subjectivity of evaluation result.
Summary of the invention
Embodiments of the invention provide a kind of urban road condition information evaluation method and device, by the track data that the equipment analyzed containing satellite positioning functions gathers, determine that the road conditions in section, track place compare analysis according to the longitude and latitude of track mid point, speed, time and direction, thus comprehensive evaluation is made to traffic information.
For achieving the above object, adopt following technical scheme:
A kind of urban road condition information evaluation method, comprising:
Load containing the sample trace information in the equipment of satellite positioning functions, sample trace information is mated with the road net data in city in road net model;
According to the road section information that matching result obtains, carry out statistical study in conjunction with the velocity information in corresponding sample trace, obtain in road net data, mating section gathers moment true road conditions at track; Data normalization corresponding to the road conditions that road conditions information service firm is provided, road condition data is transformed by written standards, the road conditions that true road conditions and traffic information service provider provide are compared analysis, judge the discrepancy threshold of index corresponding to true road conditions and traffic information service provider provide under same section road conditions, and divide rank according to the road condition data that traffic information service provider provides by discrepancy threshold, thus evaluate the accuracy of the road conditions that traffic information service provider provides.
When described loading contains the sample trace information in the equipment of satellite positioning functions, trace information is arranged and taken out and analyses, obtain the positional information pair forming track.
Described road net data is the band aspect positional information pair meeting established form, and corresponding stored is in the road net model of terminal device or server end.
When the described sample trace information corresponding according to matching result combination carries out statistical study, at server end, matching result is carried out corresponding statistics with the velocity information entrained by sample trace unique point, and according to determining the true road conditions gathering this section in moment at track by the road type in road net data.
The invention also discloses a kind of urban road condition information evaluation device, comprising:
Matching module, loads containing the sample trace information in the equipment of satellite positioning functions, is mated in the direction in sample trace information and positional information, and then determine the road section information that track is corresponding with the road net data in city;
Analysis module, according to the road section information that matching result obtains, carries out statistical study in conjunction with the velocity information in corresponding sample trace information, obtains mating section gathers moment true velocity at track in road net data;
Conversion module, the data normalization corresponding to the road conditions provide road conditions information service firm, transforms road condition data by written standards;
Comparison module, the road conditions that true road conditions and traffic information service provider provide are compared analysis, judge the discrepancy threshold of index corresponding to true road conditions and traffic information service provider provide under same section road conditions, and divide rank according to the road condition data that traffic information service provider provides by discrepancy threshold, thus evaluate the accuracy to the road conditions that road conditions information service firm provides.
In described matching module, when loading the sample trace information in the equipment containing satellite positioning functions, trace information is arranged and taken out and analyses, obtain the satellite positioning location information pair forming track.
Described road net data is the positional information pair meeting established form band aspect, and corresponding stored is in the road net model of terminal device or server end.
In described analysis module, when the sample trace information corresponding according to matching result combination carries out statistical study, at server end, matching result is carried out corresponding statistics with the velocity information entrained by sample trace unique point, and according to determining the true road conditions gathering this section in moment at track by the road type in road net data.
A kind of urban road condition information evaluation method that the embodiment of the present invention provides and device, the sample trace information of motor vehicle at each sections of road is have recorded by the equipment containing satellite positioning functions, the actual road conditions of these sections in particular moment can be determined, thus the road conditions that road conditions information service firm provides are compared, greatly reduce the degree of participation of human factor, make the evaluation result that obtains just objective, and be convenient to user and implement, availability is strong, enhances Consumer's Experience.
Accompanying drawing explanation
The process flow diagram of a kind of urban road condition information evaluation method that Fig. 1 provides for the embodiment of the present invention one;
The structural drawing of a kind of urban road condition information evaluation device that Fig. 2 provides for the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, a kind of urban road condition information evaluation method of the embodiment of the present invention and device are described in detail.
The urban traffic situation information provided due to each road condition data source there are differences, some is even obviously opposed, each section track data that the present invention is gathered by the equipment (Portable Automatic navigator) analyzed containing satellite positioning functions, the actual road conditions in section, track place are determined according to the longitude and latitude of each track characteristic point in track data, speed, time and direction, compare analysis with the road condition data that the data source that these actual road conditions and road conditions service provider provide provides again, thus comprehensive evaluation is made to road conditions service provider condition information.
The present invention takes full advantage of containing the GPS positioning function in the equipment of satellite positioning functions, equipment containing satellite positioning functions is assemblied on motor vehicle, open equipment location and track recording function, the direction namely travelled in each section by equipment logging machine motor-car and speed.Like this, the path matching obtained by record in the data of section, and confirms the actual road conditions of these sections in that moment.The synchronization same section road conditions that we just can provide by the data source that the actual road conditions in this moment and road conditions service provider provide complete compare of analysis, thus realize the evaluation to the traffic information that road conditions service provider provides.
User only needs when operating motor vehicles, open satnav and the track recording function of the equipment containing satellite positioning functions, treat the driving through after a while, such as ten days first quarter moons or after the time more of a specified duration, the track data recorded in extraction device can be evaluated indexs such as the accuracys of the data source that each intelligent transportation road conditions service provider provides.
Embodiment one
The embodiment of the present invention provides a kind of urban road condition information evaluation method, as shown in Figure 1, comprising:
101, load containing the sample trace information in the equipment of satellite positioning functions, sample trace information is mated with the road net data in city in road net model; Sample trace information is the binary file with direct of travel, speed, record moment and position.
In the present embodiment, the equipment containing satellite positioning functions during user's operating motor vehicles in opening vehicle, equipment obtains sample trace information by satellite positioning functions, and (sample collection selection of time is in peak time morning and evening, gather circuit preferably in road net data coverage), because sample trace information is point of location information pair, direction, speed, the set in record moment, when loading sample trace information corresponding to motor vehicle, trace information is arranged and taken out and analyses, obtain the positional information pair in the satellite bit strip direction forming track, positional information corresponding for sample trace information is mated with road net data in road net model, obtain the road network section of corresponding sample trace information matches.Described road net data is the positional information pair in the band direction meeting established form, and corresponding stored is in the road net model of terminal device or server end.
102, combine corresponding sample trace information according to matching result (namely 101 in road network section) and carry out statistical study, obtain in road net data, mating section gathers moment true road conditions at track;
Because the velocity magnitude of vehicle can directly react traffic congestion degree, so velocity information can be can be used as the measurement index of the situation of traffic congestion state.In the present embodiment, be similar to and think that the velocity information entrained by unique point in sample trace is the velocity information of vehicle, extract the velocity information entrained by unique point in sample trace, the matching result of sample trace information and velocity information are carried out corresponding statistics, the speed change curves of unique point is analyzed, add up the congestion level that the mark obtained reflects sample trace information vehicle on the section of correspondence, thus each road type obtained in road net data gathers the true road conditions in this section in moment at track.
103, the data normalization corresponding to the road conditions provided road conditions information service firm, transforms road condition data by written standards.
The traffic information provided due to traffic information service provider is not quite identical, some producers are congestion status when thinking and through street, city is less than 20, some producers are congestion status when thinking and be less than 25, data corresponding to the traffic information that traffic information service provider provides as inconsistent, then cannot carry out unifying to compare.Data corresponding for traffic information service provider are normalized, data corresponding to the road conditions respectively road conditions information service firm provided sample after cluster, obtain the standard value of road condition data, the road condition data corresponding to road conditions traffic information service provider provided by the corresponding speed of gained standard value transforms.In the present embodiment, the standard value of road condition data is:
104, the road conditions that true road conditions and traffic information service provider provide are compared analysis, thus evaluate the accuracy of the road conditions that traffic information service provider provides.
Call the speed that the right true road conditions of positional information in same territorial scope is corresponding, corresponding to the road condition data provided with traffic information service provider, velocity range is compared, judge whether true velocity corresponding road conditions within the scope of this traffic information service standard value conform to the road condition data that traffic information service provides, finally obtain one with the comparison difference threshold values of true road conditions speed, rank is divided according to the road condition data that traffic information service provider provides by discrepancy threshold, evaluate the accuracy of the road conditions that traffic information service provider provides, thus comprehensive evaluation is made to data source traffic information.
The invention also discloses a kind of urban road condition information evaluation device, as shown in Figure 2, comprising:
Matching module 201, loads containing the sample trace information in the equipment of satellite positioning functions, is mated in the direction in sample trace information and positional information, and then determine the road section information that track is corresponding with the road net data in city;
Analysis module 202, according to the road section information that matching result obtains, carries out statistical study in conjunction with the velocity information in corresponding sample trace information, and the section obtaining each path matching in road net data gathers the true road conditions in moment at track;
Conversion module 203, the data normalization corresponding to the road conditions provide road conditions information service firm, transforms road condition data by written standards;
The road conditions that true road conditions and traffic information service provider provide are compared analysis by comparison module 204, thus evaluate the accuracy of the road conditions that traffic information service provider provides.
In described matching module, when loading the sample trace information in the equipment containing satellite positioning functions, trace information is arranged and taken out and analyses, and then obtain the feature locations information for mating the band direction needed for road net data further.
Described road net data is the positional information pair in the band direction meeting established form, and corresponding stored is in the road net model of terminal device or server end.
In described analysis module, when the sample trace information corresponding according to matching result combination carries out statistical study, at terminal device or server end, matching result is carried out corresponding statistics with the velocity information entrained by the unique point in sample trace, finally determine the true road conditions gathering this section in moment at track.
In described comparison module, when the road conditions that true road conditions and traffic information service provider provide are compared analysis, judge the discrepancy threshold of index corresponding to true road conditions and traffic information service provider provide under same section road conditions, thus evaluate the accuracy of the road conditions service that traffic information service provider provides.
A kind of urban road condition information evaluation method of the present invention and device, the sample trace information of motor vehicle at each sections of road is have recorded by the equipment containing satellite positioning functions, the actual road conditions of these sections in particular moment can be determined, thus the road conditions that road conditions information service firm provides are compared, greatly reduce the degree of participation of human factor, make the evaluation result that obtains just objective, and be convenient to user and implement, availability is strong, enhances Consumer's Experience.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (6)
1. a urban road condition information evaluation method, is characterized in that, comprising:
Load containing the sample trace information in the equipment of satellite positioning functions, sample trace information is mated with the road net data in city in road net model; Described sample trace information comprises the advanced positions of sample, direction, speed and record moment;
According to matching result determination road conditions coupling section, carry out statistical study in conjunction with the speed in corresponding sample trace information, matching result and the velocity information entrained by the unique point in sample trace carried out corresponding statistics at server end and obtain each section in road net data to gather moment true road conditions at track;
Data normalization corresponding to the road conditions that road conditions information service firm is provided, road condition data is transformed by written standards, the road conditions that true road conditions and traffic information service provider provide are compared analysis, judge the discrepancy threshold of index corresponding to true road conditions and traffic information service provider provide under same section road conditions, and divide rank according to the road condition data that traffic information service provider provides by discrepancy threshold, thus evaluate the accuracy of the road conditions service that traffic information service provider provides.
2. method according to claim 1, it is characterized in that: when described loading contains the sample trace information in the equipment of satellite positioning functions, trace information is arranged and taken out and analyses, and then obtain the feature locations information for mating the band direction needed for road net data further.
3. method according to claim 1, is characterized in that: described road net data is the longitude and latitude pair in the band direction meeting established form, and corresponding stored is in the road net model of terminal device or server end.
4. a urban road condition information evaluation device, is characterized in that, comprising:
Matching module, loads containing the sample trace information in the equipment of satellite positioning functions, is mated in the direction in sample trace information and positional information, and then determine the road section information that track is corresponding with the road net data in city;
Analysis module, according to the road section information that matching result obtains, statistical study is carried out in conjunction with the velocity information in corresponding sample trace information, at server end, matching result is carried out corresponding statistics with the velocity information entrained by the unique point in sample trace, obtain in road net data, mating section gathers moment true road conditions at track;
Conversion module, the data normalization corresponding to the road conditions provide road conditions information service firm, transforms road condition data by written standards;
Comparison module, the road conditions that true road conditions and traffic information service provider provide are compared analysis, judge the discrepancy threshold of index corresponding to true road conditions and traffic information service provider provide under same section road conditions, and divide rank according to the road condition data that traffic information service provider provides by discrepancy threshold, thus evaluate the accuracy to the road conditions that road conditions information service firm provides.
5. device according to claim 4, it is characterized in that: in described matching module, when loading the sample trace information in the equipment containing satellite positioning functions, trace information is arranged and taken out and analyses, and then obtain the feature locations information for mating the band direction needed for road net data further.
6. device according to claim 4, is characterized in that: described road net data is the positional information pair in the band direction meeting established form, and corresponding stored is in the road net model of terminal device or server end.
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| CN201210008098.6A CN102768797B (en) | 2012-01-12 | 2012-01-12 | A kind of urban road condition information evaluation method and device |
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| CN201210008098.6A CN102768797B (en) | 2012-01-12 | 2012-01-12 | A kind of urban road condition information evaluation method and device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103136957B (en) * | 2012-12-25 | 2015-10-07 | 上海博泰悦臻电子设备制造有限公司 | The supplying method of real-time road condition information and device, navigational system |
| CN104616520B (en) * | 2014-05-09 | 2017-10-31 | 腾讯科技（深圳）有限公司 | A kind of method and apparatus of navigation path dynamically recording |
| 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 |
| CN104484999B (en) * | 2014-12-31 | 2017-08-22 | 百度在线网络技术（北京）有限公司 | The method and device of dynamic information is determined based on user trajectory |
| CN111044064A (en) * | 2018-10-15 | 2020-04-21 | 上海博泰悦臻电子设备制造有限公司 | Vehicle, navigation terminal and historical navigation data-based travel road condition construction method |
| CN113704377B (en) * | 2021-08-30 | 2024-03-01 | 中国地质大学（武汉） | Road network matching method combining manual interaction and active learning |
| CN113888877B (en) * | 2021-12-08 | 2022-03-08 | 南方科技大学 | Traffic state detection method, device, equipment and storage medium |
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| CN101673460A (en) * | 2009-08-25 | 2010-03-17 | 北京世纪高通科技有限公司 | Traffic information quality evaluation method, device and system therefor |
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| CN101976505A (en) * | 2010-10-25 | 2011-02-16 | 中国科学院深圳先进技术研究院 | Traffic evaluation method and system |
| CN102097077A (en) * | 2010-12-11 | 2011-06-15 | 九江中弘电子科技有限公司 | Automotive integrated information liquid crystal display driving technique |
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| JP2004258884A (en) * | 2003-02-25 | 2004-09-16 | Matsushita Electric Ind Co Ltd | Fcd information collecting method and probe car system |
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| CN101673460A (en) * | 2009-08-25 | 2010-03-17 | 北京世纪高通科技有限公司 | Traffic information quality evaluation method, device and system therefor |
| CN101908276A (en) * | 2010-07-29 | 2010-12-08 | 北京世纪高通科技有限公司 | Method and device for evaluating traffic information |
| CN101976505A (en) * | 2010-10-25 | 2011-02-16 | 中国科学院深圳先进技术研究院 | Traffic evaluation method and system |
| CN102097077A (en) * | 2010-12-11 | 2011-06-15 | 九江中弘电子科技有限公司 | Automotive integrated information liquid crystal display driving technique |
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