CN102592446A - Method for computing intercity road travel time by using floating car locating data - Google Patents
Method for computing intercity road travel time by using floating car locating data Download PDFInfo
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Abstract
The invention discloses a method for computing intercity road travel time by using floating car locating data, which relates to the application field of road traffic incident information and is invented for computing intercity road travel time. The method comprises the steps of setting at least two speed threshold values which divide intercity road links into at least three types of road sections; collecting locating data of the floating car at each data collecting moment, and the locating data package comprises running speeds and longitude and latitude coordinates; dividing the intercity road links into sections according to the locating data of the floating car and the speed threshold values; and computing the travel time on each type of the road sections according to the locating data of the floating car and the speed threshold values. The method is mainly applied to collecting and releasing road information.
Description
Technical field
The present invention relates to the application of road traffic accident information, relate in particular to a kind of Floating Car locator data of utilizing and calculate intercity road travel time method.
Background technology
The locator data of Floating Car is intelligent transportation system (Intelligent Transportation System; ITS) one of important source of data; The locator data of utilizing Floating Car to gather calculates hourage of road, confesses passerby, the traffic administration personnel inquire about and various decision-making.The road travel temporal information can be advanced person's traveler infosystem (Advanced Technical InformationIntelligent System accurately in real time; ATIS) and advanced traffic control system (Advanced Transportation Management System; ATMS) realizing route is induced provides effective information, thereby reduces traffic congestion.
The technology of existing calculating hourage is to gather GPS (Global Positioning System, GPS) data, and the hourage of calculating the road chain with these data as locator data from taxi or bus.
State in realization in the process of calculating hourage; The inventor finds that the road chain that prior art is primarily aimed in the city carries out the calculating of hourage; And do not carry out the scheme calculated hourage to intercity road chain, the trip information of intercity road can't be provided for traveler.
Summary of the invention
Embodiments of the invention provide a kind of Floating Car locator data of utilizing to calculate intercity road travel time method, and the trip information of intercity road can be provided for traveler.
The invention provides a kind of method of utilizing the Floating Car locator data to calculate intercity road travel time method, comprising:
At least two threshold speeds are set, and said at least two threshold speeds are divided at least three kinds of road segment classification with intercity road chain;
Gather the locator data of said Floating Car constantly in each data acquisition, said locator data comprises road speed and latitude and longitude coordinates;
Locator data and said threshold speed according to said Floating Car carry out segmentation to said intercity road chain;
Locator data and said threshold speed according to said Floating Car calculate the hourage on every kind of highway section.
The Floating Car locator data of utilizing that the embodiment of the invention provides is calculated intercity road travel time method; Can intercity road chain be carried out segmentation according to locator data and the threshold speed that Floating Car provides, and calculate the hourage on each highway section according to locator data and the threshold speed that Floating Car provides.Filled up the blank of not carrying out segmentation and highway section calculating hourage in the prior art, for traveler provides careful trip information more comprehensively to intercity road chain.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 utilizes the Floating Car locator data to calculate the process flow diagram of intercity road travel time method in the embodiment of the invention;
Fig. 2 utilizes the Floating Car locator data to calculate the process flow diagram of intercity road travel time method in the another embodiment of the present invention;
Fig. 3 is for calculating the synoptic diagram of road section length in the application scenarios of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention provides a kind of Floating Car locator data of utilizing to calculate intercity road travel time method, and as shown in Figure 1, said method comprises the steps:
101, at least two threshold speeds are set.
Said at least two threshold speeds are divided at least three kinds of road segment classification with intercity road chain.The embodiment of the invention does not limit the number and the size of said threshold speed.
102, gather the locator data of Floating Car constantly in each data acquisition.
Said locator data of gathering Floating Car constantly in each data acquisition comprises by the data source provider periodically gathers the gps data that Floating Car is uploaded; Receive the gps data that the data source provider sends according to pre-determined host-host protocol, comprise the road speed and the latitude and longitude coordinates of Floating Car in the said locator data at least.The cycle length of the content of locator data and data acquisition can be runed needs setting according to reality, and the embodiment of the invention does not limit this.
103, locator data and the threshold speed according to Floating Car carries out segmentation to intercity road chain.
Gathering around gentle logical two threshold speeds of threshold value of slow threshold value with setting is example; Gathering around slow threshold value is 40 kilometers/hour; 80 kilometers/hour of slow logical threshold values; Gather around the gentle logical threshold value of slow threshold value intercity road chain is divided into three kinds of highway sections, Floating Car reaches 40 kilometers/hour formed highway sections of the displacement of advancing, Floating Car road speed to road speed and surpasses 40 kilometers/hour and reach 80 kilometers/hour formed highway sections of the displacement of advancing and the Floating Car road speed drops to 80 kilometers/hour formed highway sections of the displacement of advancing above 80 kilometers/hour to road speed once more to road speed by starting (speed is zero).For example, can obtain Floating Car starts latitude and longitude coordinates, Floating Car road speed in the locator data that constantly reports and reaches 40 kilometers/hour and report latitude and longitude coordinates, Floating Car road speed in the locator data to reach 80 kilometers/hour to report latitude and longitude coordinates and Floating Car road speed in the locator data to drop to 80 kilometers/hour latitude and longitude coordinates that report in the locator data once more.Can calculate Floating Car through two latitude and longitude coordinates obtaining reaches 40 kilometers/hour formed road section length of the displacement of advancing, Floating Car to road speed and reaches 40 kilometers/hour by vehicle speed and reach 80 kilometers/hour formed road section length of the displacement of advancing, Floating Car to road speed and reach 80 kilometers/hour by vehicle speed and drop to 80 kilometers/hour formed road section length of the displacement of advancing once more to road speed by starting (speed is zero).
Need to prove that said road section length is not to be to divide according to the length of intercity road chain, but whether reach the threshold speed decision by Floating Car.Because the driver's of every table flotation motor-car driving habits and the road conditions of facing can be not in full accord; So every table flotation motor-car by start to road speed reach the displacement that threshold speed advances can be strict not identical; Be that the road section length that every table flotation motor-car is calculated can be strict not identical, this has also reflected the driving situation on the highway section more comprehensively really.
104, locator data and the threshold speed according to Floating Car calculates the hourage on every kind of highway section.
Calculate Floating Car in each highway section up train time, said running time can obtain according to the mistiming that periodically receives locator data.Report the moment of locator data to deduct the running time that the moment that reports locator data when the Floating Car road speed is zero is this highway section when for example, reaching 40 kilometers/hour with the Floating Car road speed.
The Floating Car locator data of utilizing that the embodiment of the invention provides is calculated intercity road travel time method; Can intercity road chain be carried out segmentation according to locator data and the threshold speed that Floating Car provides, and calculate the hourage on each highway section according to locator data and the threshold speed that Floating Car provides.Filled up the blank of not carrying out segmentation and highway section calculating hourage in the prior art, for traveler provides careful trip information more comprehensively to intercity road chain.
Further, the embodiment of the invention also provides a kind of Floating Car locator data of utilizing to calculate intercity road travel time method, and said method is the expansion to method shown in Figure 1, and is as shown in Figure 2, and said method comprises the steps:
201, two threshold speeds are set.
Said two threshold speeds are divided into three kinds of road segment classification with intercity road chain.An application scenarios of the embodiment of the invention is: be provided with and gather around gentle logical two threshold speeds of threshold value of slow threshold value; It is said that to gather around slow threshold value be 40 kilometers/hour; Said slow logical threshold value is 80 kilometers/hour, and said two threshold speeds are divided into the highway section that blocks up, jogging highway section and the three kinds of road segment classification in unimpeded highway section with intercity road chain.
Need to prove that said two threshold speeds are divided into three kinds of road segment classification with intercity road chain and do not represent that said intercity road chain only is made up of these three highway sections.Because during real road goes, Floating Car speed has to increase to have and subtracts, and might Floating Car reaches the speed that speed after the speed in unobstructed highway section drops to the slow forehearth section even the highway section that blocks up again, then rises to the perhaps speed in unimpeded highway section of slow forehearth section again.The meeting of variation repeatedly of speed is divided into intercity road chain more than three highway sections, and the type in these highway sections can not exceed the highway section that blocks up, jogging highway section and these three kinds of road segment classification of unimpeded highway section.
202, periodically gather the locator data of Floating Car.
The locator data of said periodicity collection Floating Car comprises by the data source provider periodically gathers the gps data that Floating Car is uploaded; Receive the gps data that the data source provider sends according to pre-determined host-host protocol, comprise the road speed of Floating Car in the said locator data at least.The cycle length of the content of locator data and data acquisition can be runed needs setting according to reality, and the embodiment of the invention does not limit this.
203, locator data and intercity road chain are mated.
Because mostly intercity road be highway, equidirectional road chain negligible amounts and road chain are longer, so the matching algorithm of prior art can be more exactly the positional information of Floating Car is matched on the correct intercity road chain, repeat no more here.
204, confirm the road section length in each highway section according to locator data and threshold speed.
Gather around gentle logical two threshold speeds of threshold value of slow threshold value with setting; And said to gather around slow threshold value be that 40 kilometers/hour said slow logical threshold values are 80 kilometers/hour and are example: gather around the gentle logical threshold value of slow threshold value intercity road chain is divided at least three highway sections; Floating Car is by starting (speed is zero) the formed highway section that blocks up of displacement of when road speed reaches 40 kilometers/hour, advancing; The Floating Car road speed reaches 40 kilometers/hour formed slow forehearth sections of displacement of when road speed reaches 80 kilometers/hour, advancing, the formed unimpeded highway section of displacement of when the Floating Car road speed drops to 80 kilometers/hour once again, advancing after the Floating Car road speed reaches 80 kilometers/hour.With the calculating road section length of blocking up is example; Can obtain positional information and Floating Car road speed that Floating Car starts in the locator data that constantly reports and reach 40 kilometers/hour positional informations that report in the locator data, can calculate Floating Car by the road section length that starts (speed the is zero) highway section that displacement forms of when road speed reaches 40 kilometers/hour, advancing through two positional informations obtaining.Said positional information includes but are not limited to the latitude and longitude coordinates locating information, and the embodiment of the invention does not limit this.
Need to prove; Because during real road goes; Floating Car speed increases and decreases repeatedly; So said slow forehearth section also comprises the Floating Car road speed and reaches 80 kilometers/hour formed highway sections of displacement of when road speed drops to 40 kilometers/hour, advancing that the said highway section that blocks up also comprises the formed highway section of displacement of when road speed drops to zero, advancing after the Floating Car road speed reaches 40 kilometers/hour.
Because intercity road chain is long and the branch road is less, the highway section of dividing with threshold speed in addition is very short for the chain of the intercity road of whole piece, so can be by the approximate lineal measure of representing the highway section of the air line distance that positional information calculated that reports for twice.
What must explain in addition is, said road section length is not to be to divide according to the length of intercity road chain, but whether reaches the threshold speed decision by Floating Car.With the calculating road section length of blocking up is example; Because the driver's of every table flotation motor-car driving habits and the road conditions of facing can be not in full accord; To reach 40 kilometers/hour displacements of being advanced not strict identical so every table flotation motor-car is by starting to road speed, and the road section length that promptly every table flotation motor-car is calculated can be strict not identical.Can calculate a plurality of road section length of blocking up according to the locator data of many table flotations motor-car, then a plurality of road section length data of blocking up added up, so that obtain blocking up really road section length more comprehensively.In addition, can also adopt the mode that abandons extremely block up individually road section length data or enlarged sample space to guarantee that the road section length of blocking up that counts is truly comprehensive, this embodiment of the invention is not limited.
Further need to prove; The locator data of Floating Car was gathered according to the cycle, can occur the data acquisition not strict situation that equals threshold speed of velocity amplitude constantly in the practical application, for example; Collection period is 60 seconds; Floating Car is 35 kilometers/hour in the speed of certain table flotation motor-car of 10:00 collection in the morning, and do not gather around slow threshold value for Floating Car speed reaches this moment, so the calculating of the road section length of not blocking up.At next collection period is that the speed that the morning, 10:01 gathered this Floating Car is 42 kilometers/hour, and this speed reaches gathers around slow threshold value, needs to calculate the road section length of blocking up.In addition, can come to guarantee that data acquisition velocity amplitude constantly equals the probability of the situation generation of threshold speed through the mode that shortens collection period or enlarged sample space as far as possible.This embodiment of the invention is not limited.
205, add up hourage on each highway section.
Calculate Floating Car in each highway section up train time, said running time can obtain according to the mistiming that periodically receives locator data.Report the moment of locator data to deduct the running time that the moment that reports locator data when the Floating Car road speed is zero is this highway section when for example, reaching 40 kilometers/hour with the Floating Car road speed.
Of step 204; Because the road section length that is calculated according to every table flotation motor-car can be strict not identical; So the running time of every table flotation motor-car on same highway section can be strict not identical yet; This just need carry out the cluster statistics to the driving data of many table flotations motor-car, to obtain objective comprehensive hourage on this highway section.Carry out that modes that the cluster statistics time can take steps the enlarged sample space described in 204 equally or abandon indivedual extreme data guarantee data hourage objective comprehensively.
206, shown on the road section length in each highway section the hourage on each highway section respectively.
Optional, the intercity road chain described in the embodiment of the invention is not for belonging to intercity road of arbitrary city-level administrative division.Owing to can calculate city road chain hourage in the prior art; Calculate the intercity road chain blank of hourage so the embodiment of the invention has remedied, and road chain in intercity road chain and the administrative division is distinguished the double counting that can also avoid hourage on same the road chain.
Preferably, the Floating Car described in the embodiment of the invention preferably adopts intercity logistics car that goes.Because the logistics car is higher and stable intercity frequency of going, can provide abundant stable data to originate hourage for calculating intercity road chain so preferably gather locator data from the logistics car.
In the Another application scene of the embodiment of the invention, can be with the latitude and longitude coordinates point of the reference position of said intercity road chain and final position respectively as the starting point and the terminating point of said intercity road chain.Perhaps, Floating Car is got into the latitude and longitude coordinates point gathered for the first time behind the chain of intercity road as starting point, roll Floating Car away from said intercity road chain before the last latitude and longitude coordinates point of gathering as terminating point.When calculating certain road section length, can Floating Car be added up in the distance between every adjacent two latitude and longitude coordinates points on this highway section, draw the road section length in this highway section thus.Concrete is as shown in Figure 3, and Floating Car has surpassed in N secondary data collection road speed constantly gathers around slow threshold value, gets into the jogging highway section; Surpass slow logical threshold value in N+5 secondary data collection road speed constantly, got into unimpeded highway section.When calculating the jogging road section length; With the difference of the distance of the latitude and longitude coordinates point of N and twice acquisition of N+1 as sub-road section length 1; The difference of the distance of the latitude and longitude coordinates point of N+1 and twice acquisition of N+2 as sub-road section length 2, by that analogy, is calculated 5 sub-road section length.Then these 5 sub-road section length values are added up, draw the length in jogging highway section.Because intercity road chain is not strict linear, so should can accurately calculate the length in non-linear highway section more with the fall into a trap implementation of calculating road section length of scene.Can infer; Shorten the locator data collection period and can increase the latitude and longitude coordinates point; The length in the non-linear highway section of the more calculating of latitude and longitude coordinates point is just accurate more; If continuous acquisition latitude and longitude coordinates point under extreme conditions, then all latitude and longitude coordinates are named a person for a particular job and are formed a smooth curve, and this curve is road section length.
Further; In the Another application scene of the embodiment of the invention; According to the locator data counting statistics road section length of many table flotations motor-car and statistics during hourage; Can adopt the mode of cluster statistics, the latitude and longitude coordinates point of concrete highway section division points with many table flotations motor-car carries out the cluster statistics, draws the latitude and longitude coordinates of statistics highway section division points.The difference of the latitude and longitude coordinates point of every adjacent two statistics highway section division points be the length in the highway section of these two the latitude and longitude coordinates point formation of adding up the highway section division points.Then many table flotations motor-car is carried out the cluster statistics hourage on same highway section, draw the statistics hourage in this highway section.In addition, when the counting statistics road section length, can also each sub-road section length of many table flotations motor-car be carried out cluster statistics respectively, then the word road section length after the cluster statistics added up, draw the road section length after the statistics.
When cluster is added up, can the extreme data of sample space be rejected.The implementation of concrete judgement extremum can be by the keeper extremum threshold value to be set in advance, and all sample datas greater than this extremum threshold value all are regarded as extremum and eliminate sample space.
The method that the gps data that utilizes taxi or bus to upload that has adopted is at present originated as locator data; Receive the restriction of Floating Car range of operation more; Promptly generally speaking; Taxi and bus can cover the road chain in the metropolitan district preferably, and the operation of still carrying out intercity is less, and the operation frequency is unstable.The Floating Car locator data of utilizing that the embodiment of the invention provides is calculated intercity road travel time method; Can incite somebody to action relatively long intercity road chain segmentation according to the locator data that Floating Car provides; The running time on each highway section respectively of many table flotations motor-car is added up, drawn the hourage on each highway section.Filled up the blank of not carrying out calculating hourage in the prior art, for traveler provides more comprehensively trip information to intercity road chain.
In addition; The Floating Car locator data of utilizing that the embodiment of the invention provides is calculated intercity road travel time method; Can also relatively long intercity road chain be carried out segmentation, and segmentation hourage of intercity road chain is represented, for traveler provides refinement trip information service more.
At last; The Floating Car locator data of utilizing that the embodiment of the invention provides is calculated intercity road travel time method; To the characteristics of intercity road chain with the acquisition source of intercity logistics car as locator data; For the calculating of intercity road chain hourage provides stable data basis more, guaranteed intercity hourage accurately.
Through the description of above embodiment, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computing machine; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
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 by said protection domain with claim.
Claims (9)
1. one kind is utilized the Floating Car locator data to calculate intercity road travel time method, it is characterized in that, comprising:
At least two threshold speeds are set, and said at least two threshold speeds are divided at least three kinds of road segment classification with intercity road chain;
Gather the locator data of said Floating Car constantly in each data acquisition, said locator data comprises road speed and latitude and longitude coordinates;
Locator data and said threshold speed according to said Floating Car carry out segmentation to said intercity road chain;
Locator data and said threshold speed according to said Floating Car calculate the hourage on every kind of highway section.
2. method according to claim 1 is characterized in that, at least two threshold speeds of said setting comprise:
The gentle logical threshold value of slow threshold value is gathered around in setting, saidly gathers around slow threshold value less than said slow logical threshold value, said gather around slow threshold value and said slow logical threshold value said intercity road chain is divided into block up, jogging and unimpeded three kinds of road segment classification.
3. method according to claim 2 is characterized in that, said method also comprises:
Said locator data and said intercity road chain are mated.
4. method according to claim 3 is characterized in that, saidly gathers the locator data of said Floating Car constantly in each data acquisition, comprising:
Gather the locator data of said Floating Car according to preset data collection cycle, said data acquisition is expiring constantly for data collection cycle constantly.
5. method according to claim 4 is characterized in that, said locator data and said threshold speed according to said Floating Car carries out segmentation to said intercity road chain, comprising:
Road speed and threshold speed that said Floating Car is engraved when each data acquisition compare; When the road speed that when a certain data acquisition, engraves surpasses said threshold speed first; The latitude and longitude coordinates point that engraves during data acquisition that this road speed is corresponding is as the highway section division points, and at least two highway section division points that relatively draw with at least two threshold speeds are divided into three kinds of highway sections at least with said intercity road chain;
The distance of adjacent latitude and longitude coordinates point in twos between the two highway section division points is added up, draw the road section length in highway section.
6. method according to claim 5 is characterized in that, with the reference position of said intercity road chain as starting point, so that calculate road section length with said highway section division points;
With end stopping of chain position, said intercity road as terminating point, so that calculate road section length with said highway section division points; Perhaps,
Said Floating Car is got into the latitude and longitude coordinates of gathering for the first time after the chain of said intercity road as starting point, so that calculate road section length with said highway section division points;
Said Floating Car is gone out from the last before latitude and longitude coordinates of gathering of said intercity road chain as terminating point, so that calculate road section length with said highway section division points.
7. method according to claim 6 is characterized in that, said locator data and said threshold speed according to said Floating Car calculates the hourage on every kind of highway section, comprising:
The data acquisition difference constantly of two highway section division points that each highway section is corresponding is as the hourage on this highway section.
8. method according to claim 5 is characterized in that, said road speed and the threshold speed that said Floating Car is engraved when each data acquisition compares, and comprising:
At least two highway section division points corresponding to same threshold speed of at least two table flotation motor-cars are carried out the cluster statistics, draw statistics highway section division points corresponding to this threshold speed;
Said distance with adjacent latitude and longitude coordinates point in twos between the two highway section division points adds up, and draws the road section length in highway section, comprising:
With the distance of the latitude and longitude coordinates point of per two adjacent statistics highway section division points road section length as every kind of highway section;
Said locator data and said threshold speed according to said Floating Car calculates the hourage on every kind of highway section, comprising:
At least two table flotation motor-cars are carried out the cluster statistics hourage on same highway section, draw the statistics hourage in this highway section.
9. according to any described method in the claim 1 to 8, it is characterized in that, said Floating Car comprise go on the chain of intercity road the logistics car.
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| CN104620293A (en) * | 2012-09-13 | 2015-05-13 | 丰田自动车株式会社 | Device and method for assessing travel environment |
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| CN104952243A (en) * | 2014-03-25 | 2015-09-30 | 高德软件有限公司 | Method and device for allocating passage time lengths |
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