CN102855752A - Method and device for publishing traffic road condition increment in real time - Google Patents
Method and device for publishing traffic road condition increment in real time Download PDFInfo
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- CN102855752A CN102855752A CN2011101803460A CN201110180346A CN102855752A CN 102855752 A CN102855752 A CN 102855752A CN 2011101803460 A CN2011101803460 A CN 2011101803460A CN 201110180346 A CN201110180346 A CN 201110180346A CN 102855752 A CN102855752 A CN 102855752A
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Abstract
The invention discloses a method and a device for publishing traffic road condition increment in real time. The method includes that a road condition information publisher publishes all traffic road condition information to user terminals via the network, compares the current traffic road condition information with the prior published traffic road condition information at every fixed time intervals and obtains increment of the traffic road condition information; and the road condition information publisher publishes increment of the traffic road condition information according to requests of the user terminals. By comparing the current traffic road condition information with the prior published traffic road condition information, the increment information of traffic road conditions is obtained and published to the user terminals, data flow and network cost are reduced.
Description
Technical field
The present invention relates to the real-time traffic service technology, particularly a kind of method and apparatus of real-time traffic increment issue.
Background technology
Along with socioeconomic development, the traffic in city becomes and becomes increasingly complex, and has brought very large inconvenience for people's trip.The real-time road service is arisen at the historic moment, and for people provide in real time easily road condition query service, which bar highway section is crowded, and which bar highway section is slow, and which bar highway section is unimpeded etc., and the traffic information in city is very clear.Just can determine route arrival destination, timesaving the most unimpeded before going out.
The real-time road in city is issued in a lot of Map Services commercial cities now, and renewal frequency at 2 to 5 minutes once.Data receiving terminal comprises computer, PND (Portable Navigation Devices, portable automatic navigation system), mobile phone etc.Considering the practicality of real-time road, more is to use at PND and mobile phone, and these device end softwares can go for the frequency of formulating the traffic information of the section of demanding perfection, and do the analysis foundation with performance to user interface or for the dynamic path planning in backstage.Under the prerequisite of not considering expense, cost, download whole road conditions is good selections at every turn.Take Beijing user as example, to drive every day three hours, renewal frequency two minutes once probably is 20K, the flow 52M in January is many like this, and flow is larger, and is not only higher to bandwidth requirement, and the traffic fee that the user need pay is also higher, yet, download all that whole road conditions neither be necessary at every turn.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus of real-time traffic increment issue, be used for the problem of the increment information of solution issuing traffic road conditions.
According to an aspect of the present invention, provide a kind of method of real-time traffic increment issue, may further comprise the steps:
A, traffic information publisher are issued whole traffic informations by network to user terminal;
B, traffic information publisher compare the whole traffic informations of current whole traffic informations with before issue every Fixed Time Interval, obtain the increment traffic information;
C, traffic information publisher are issued the increment traffic information according to the increment road conditions request that user terminal sends to user terminal.
Preferably, step B comprises:
Preset Fixed Time Interval;
Preset the update all time interval;
The traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time within the time interval at update all, obtains the increment traffic information, carries out increment identifier according to the increment traffic information in database again.
Preferably, step C comprises:
User terminal sends the request of increment road conditions to the traffic information publisher;
The traffic information publisher receives the time and last time from increment traffic information to user terminal that issue whole traffic informations or of increment road conditions request by contrast, obtain the incremental update time interval;
If the incremental update time interval is less than or equal to the update all time interval, then the traffic information publisher is searched the up-to-date incremental data corresponding with it according to the incremental update time interval in database, reads up-to-date incremental data again and issues to user terminal;
If incremental update is interval greater than the update all time interval, then the traffic information publisher is issued whole traffic informations to user terminal.
Preferably, step B comprises:
Preset Fixed Time Interval;
The traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time before, obtains the increment traffic information, carries out increment identifier according to the increment traffic information in database again.
Preferably, step C comprises:
User terminal sends the request of increment road conditions to the traffic information publisher;
The traffic information publisher receives the time and last time from increment traffic information to user terminal that issue whole traffic informations or of increment road conditions request by contrast, obtain the incremental update time interval;
The traffic information publisher is searched the up-to-date incremental data corresponding with it according to the incremental update time interval in database, read up-to-date incremental data again and issue to user terminal.
Preferably, in database, carry out increment identifier according to the increment traffic information, comprising:
The traffic information publisher identifies the highway section that the outlet condition changes according to the increment traffic information in database.
Preferably, the traffic information publisher is searched the up-to-date incremental data corresponding with it according to the incremental update time interval in database, comprising:
The traffic information publisher is searched the increment identifier corresponding with it according to the incremental update time interval in database, and obtains up-to-date incremental data according to increment identifier.
Preferably, all traffic information comprises highway section numbering, passage rate and the current grade in whole highway sections, and the increment traffic information comprises highway section numbering, passage rate and the current grade in the highway section that needs upgrade.
According to a further aspect in the invention, provide a kind of device of real-time traffic increment issue, having comprised:
The road conditions release unit is used for issuing whole traffic informations by network to user terminal;
The incremental computations unit is used for every Fixed Time Interval the whole traffic informations of current whole traffic informations with before issue being compared, and obtains the increment traffic information;
The increment release unit, the increment road conditions request that is used for sending according to user terminal is to user terminal issue increment traffic information.
Compared with prior art, beneficial effect of the present invention is: the whole traffic informations of the present invention by contrasting current whole traffic informations and issuing before, obtain the increment information of traffic and to the user terminal issue, reduced data traffic and network charges.
Description of drawings
Fig. 1 is the method flow schematic diagram of real-time traffic increment issue provided by the invention;
Fig. 2 is the device block diagram of real-time traffic increment issue provided by the invention;
Fig. 3 is the real-time traffic incremental processing schematic flow sheet that the embodiment of the invention provides;
Fig. 4 is the workflow diagram of the real-time traffic that provides of the embodiment of the invention.
Embodiment
To a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment only is used for description and interpretation the present invention, is not intended to limit the present invention below in conjunction with accompanying drawing.
Fig. 1 has shown the method flow signal of real-time traffic increment issue provided by the invention, as shown in Figure 1:
Step S101, the traffic information publisher is issued whole traffic informations by network to user terminal.Wherein, all traffic information refers to complete traffic information.
Step S102, the traffic information publisher compares the whole traffic informations of current whole traffic informations with before issue every Fixed Time Interval, obtains the increment traffic information.
Wherein, need pre-set Fixed Time Interval and the update all time interval, the traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time within the time interval at update all, obtain the increment traffic information, in database, identify the highway section that the outlet condition changes according to the increment traffic information again.Perhaps, the traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time before, obtains the increment traffic information, identifies the highway section that the outlet condition changes according to the increment traffic information in database again.
Wherein, Fixed Time Interval is the time interval of the current whole traffic informations of traffic information publisher timing comparing and whole traffic informations before.
Step S103, the traffic information publisher is issued the increment traffic information according to the increment road conditions request that user terminal sends to user terminal.
If the traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time within the time interval at update all, then when the traffic information publisher receives the increment road conditions request that user terminal sends, the traffic information publisher receives the time and last time from increment traffic information to user terminal that issue whole traffic informations or of increment road conditions request by contrast, obtain the incremental update time interval, if the incremental update time interval is less than or equal to the update all time interval, then the traffic information publisher is searched the increment identifier corresponding with it according to the incremental update time interval in database, and obtain up-to-date incremental data according to increment identifier, reading up-to-date incremental data issues to user terminal again, if incremental update is interval greater than the update all time interval, that is to say when user terminal surpasses the update all time interval and once do not upgrade operation, then when the traffic information publisher received the increment road conditions request that user terminal sends, the traffic information publisher was issued whole traffic informations to user terminal.
If the traffic information publisher compares every Fixed Time Interval and whole traffic informations of issuing each time before, then when the traffic information publisher receives the increment road conditions request that user terminal sends, the traffic information publisher receives the time and last time from increment traffic information to user terminal that issue whole traffic informations or of increment road conditions request by contrast, obtain the incremental update time interval, then, the traffic information publisher is searched the increment identifier corresponding with it according to the incremental update time interval in database, and obtain up-to-date incremental data according to increment identifier, read again up-to-date incremental data and issue to user terminal.
Wherein, all traffic information comprises highway section numbering, passage rate and the current grade etc. in whole highway sections, and the increment traffic information comprises highway section numbering, passage rate and the current grade etc. in the highway section that needs upgrade.
Fig. 2 has shown the device block diagram of real-time traffic increment issue provided by the invention, as shown in Figure 2, comprises road conditions release unit, incremental computations unit and increment release unit.Wherein, the road conditions release unit is issued whole traffic informations by network to user terminal, the incremental computations unit compares the whole traffic informations of current whole traffic informations with before issue every Fixed Time Interval, obtain the increment traffic information, the increment road conditions request that the increment release unit sends according to user terminal is read the increment traffic information from the incremental computations unit and is issued to user terminal.
Fig. 3 has shown the real-time traffic incremental processing flow process signal that the embodiment of the invention provides, the incremental data of traffic is that the relative before whole traffic informations of each time point of whole traffic informations of current issue are done difference, the present embodiment is done at most the difference of half an hour, half an hour and abovely think that road conditions all have renewal.As shown in Figure 3:
From ITS (Intelligent Transport System, intelligent transportation system) traffic information publisher, once receive complete traffic information and be stored among the DB (Database, database), and simultaneously backup in the internal memory of service routine.
Through behind the predefined Fixed Time Interval, receive again once current complete traffic information, at this time with the difference of doing of last time, new database sign more simultaneously.The principle of doing difference is forward and reverse for the same road, as long as the passage rate on road or current grade change, is difference with regard to the road conditions that indicate this road, as the data source of increment.Wherein, current grade comprises unimpeded, slowly and block up etc.
Traffic information according to front twice reception is done difference, until reach the difference of the time period of formulation, the time period of appointment here is the update all time interval, is 30 minutes.
The interaction protocol that user terminal is formulated according to inside, request is the incremental data of correspondence with it.
Fig. 4 has shown the workflow of the real-time traffic that the embodiment of the invention provides, and system received once all traffic informations in per 5 minutes, and all traffic information is the set of each bar highway section road condition data.The road condition data in each bar highway section is comprised of elements such as highway section numbering, passage rate, current grades, wherein, current grade can be divided into according to friction speed unimpeded, slowly and block up, the increment traffic information be up-to-date data once and before the data of each time point do difference and the result data that obtains.The present embodiment regulation thinks more than 30 minutes that road conditions all have renewal, and the basis of judging difference is whether passage rate and current grade equate, such as 5 minutes renewal one secondary data, will do 6 increments and judge in 30 minutes.Current road conditions issuing time is 8:50, will do contrast with the road condition data of 8:45,8:40,8:35,8:30,8:25,8:20 respectively, the increment traffic information that obtains identifies in latest data, request such as user 8:50 is the incremental data of relative 8:25, to in database, find the increment identifier corresponding with this time period, obtain up-to-date incremental data and be issued to user terminal according to increment identifier again, as shown in Figure 4:
Each Fixed Time Interval receives ITS data, carries out the Data Analysis storage, and the ITS data that receive are resolved and processed, and changes the data memory format that can identify into, when storing the ITS database into, keeps current results in buffer memory.
Carry out data behind the 1st receive data and resolve storage.
Carry out data behind the 2nd receive data and resolve storage, the ergodic data record is done diversity ratio with the data of the 1st storage.Road conditions to same highway section and last time point compare, if passage rate or current grade are not identical, namely change, and are labeled as an increment in this highway section, otherwise are designated without increment.
Carry out data behind the 3rd receive data and resolve storage, the ergodic data record is done diversity ratio with the storage data of the 1st time and the 2nd time respectively.Road conditions to same highway section and upper two time points compare respectively, as variation has all occured, namely are labeled as the increment that two time points are gone up respectively in this highway section relatively.
Carry out data behind the 4th receive data and resolve storage, identical with the processing once of front, but the increment of many time points is judged.
By that analogy, arrive stipulated number until increment is judged number of times, the stipulated number here is 30 minutes need to carry out the number of times that increment is judged.N represents stipulated number among the figure.
In sum, the present invention has following technique effect: the invention provides a kind of more cheap more intelligent real-time traffic service technology, by the whole traffic informations that contrast current whole traffic informations and issue before, obtain the increment information of traffic and issue to user terminal, reduced data traffic and network charges, can loss yet the quality of service.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all should be understood to fall into protection scope of the present invention.
Claims (9)
1. the method for a real-time traffic increment issue is characterized in that, may further comprise the steps:
A, traffic information publisher are issued whole traffic informations by network to user terminal;
B, described traffic information publisher compare the whole traffic informations of current whole traffic informations with before issue every Fixed Time Interval, obtain the increment traffic information; And
C, described traffic information publisher are issued described increment traffic information according to the increment road conditions request that described user terminal sends to described user terminal.
2. method according to claim 1 is characterized in that, described step B comprises:
Preset described Fixed Time Interval;
Preset the update all time interval; And
Described traffic information publisher compares every described Fixed Time Interval and whole traffic informations of issuing each time within the time interval at described update all, obtain described increment traffic information, in database, carry out increment identifier according to described increment traffic information again.
3. method according to claim 2 is characterized in that, described step C comprises:
Described user terminal sends the request of described increment road conditions to described traffic information publisher;
Described traffic information publisher receives the time and last time from increment traffic information to described user terminal that issue whole traffic informations or of described increment road conditions request by contrast, obtain the incremental update time interval;
If the described incremental update time interval is less than or equal to the described update all time interval, then described traffic information publisher is searched the up-to-date incremental data corresponding with it according to the described incremental update time interval in database, reads described up-to-date incremental data again and issues to described user terminal; And
If described incremental update is interval greater than the described update all time interval, then described traffic information publisher is issued whole traffic informations to user terminal.
4. method according to claim 1 is characterized in that, described step B comprises:
Preset described Fixed Time Interval; And
Described traffic information publisher compares every described Fixed Time Interval and whole traffic informations of issuing each time before, obtains described increment traffic information, carries out increment identifier according to described increment traffic information in database again.
5. method according to claim 4 is characterized in that, described step C comprises:
Described user terminal sends the request of described increment road conditions to described traffic information publisher;
Described traffic information publisher receives the time and last time from increment traffic information to described user terminal that issue whole traffic informations or of described increment road conditions request by contrast, obtain the incremental update time interval; And
Described traffic information publisher is searched the up-to-date incremental data corresponding with it according to the described incremental update time interval in database, read described up-to-date incremental data again and issue to described user terminal.
6. according to claim 3 or 5 described methods, it is characterized in that, describedly in database, carry out increment identifier according to the increment traffic information, comprising:
Described traffic information publisher identifies the highway section that the outlet condition changes according to described increment traffic information in database.
7. method according to claim 6 is characterized in that, described traffic information publisher is searched the up-to-date incremental data corresponding with it according to the incremental update time interval in database, comprising:
Described traffic information publisher is searched the increment identifier corresponding with it according to the incremental update time interval in database, and obtains described up-to-date incremental data according to described increment identifier.
8. method according to claim 7, it is characterized in that, described whole traffic information comprises highway section numbering, passage rate and the current grade in whole highway sections, and described increment traffic information comprises highway section numbering, passage rate and the current grade in the highway section that needs upgrade.
9. the device of a real-time traffic increment issue is characterized in that, comprising:
The road conditions release unit is used for issuing whole traffic informations by network to user terminal;
The incremental computations unit is used for every Fixed Time Interval the whole traffic informations of current whole traffic informations with before issue being compared, and obtains the increment traffic information; And
The increment release unit is used for issuing described increment traffic information according to the increment road conditions request that described user terminal sends to described user terminal.
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| CN2011101803460A CN102855752A (en) | 2011-06-30 | 2011-06-30 | Method and device for publishing traffic road condition increment in real time |
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| CN110874943A (en) * | 2018-08-31 | 2020-03-10 | 高德信息技术有限公司 | Method, device and medium for acquiring road conditions |
| CN111415521A (en) * | 2019-01-04 | 2020-07-14 | 阿里巴巴集团控股有限公司 | Method and device for selecting traffic information distribution road and electronic equipment |
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Application publication date: 20130102 |