CN103914978A - Vehicle information collection method and apparatus - Google Patents
Vehicle information collection method and apparatus Download PDFInfo
- Publication number
- CN103914978A CN103914978A CN201210592866.7A CN201210592866A CN103914978A CN 103914978 A CN103914978 A CN 103914978A CN 201210592866 A CN201210592866 A CN 201210592866A CN 103914978 A CN103914978 A CN 103914978A
- Authority
- CN
- China
- Prior art keywords
- transport information
- traffic information
- information
- floating car
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Traffic Control Systems (AREA)
Abstract
An embodiment of the invention discloses a vehicle information collection method and apparatus. A probe vehicle continuously receives traffic information according to a fixed frequency. The method comprises obtaining a current driving speed of the probe vehicle; when the current driving speed is determined to be inconsistent with a previously obtained driving speed of the probe vehicle, obtaining a traffic information acquisition frequency corresponding to the current driving speed from a preset corresponding relation between the driving speed and the traffic information acquisition frequency; and according to the traffic information acquisition frequency, acquiring traffic information to be uploaded from the traffic information received by the probe vehicle when the current driving speed is obtained. That traffic information collection points are evenly distributed on the road can be ensured to a certain extent, and with the traffic information having a relatively small amount of uploaded data, a server side is also enabled to obtain accurate traffic conditions through analysis based on the received traffic information.
Description
Technical field
The embodiment of the present invention relates to traffic information collection field, especially relates to a kind of traffic information collecting method and device.
Background technology
Floating Car (FCD, Float Car Data) technology, is also known as probe vehicles (Probe Car) technology, is one of the advanced technology means of Traffic Information of obtaining that international intelligent transportation system (ITS) adopts.Its ultimate principle is: Floating Car, namely load the automobile of traffic information collection terminal, gather and calculate the transport information of road traffic state, comprising: the latitude and longitude information of Floating Car present position, Floating Car in the travel speed of this position, generate the moment of this transport information etc.; In floating vehicle travelling process, by namely traffic information collection terminal of Floating Car, the transport information collecting is uploaded to the server ends such as information processing centre by wireless data communication network (as GPRS network etc.).
In prior art, traffic information collection terminal is integrated for receiving the GPS chip of gps data (aforementioned transport information can be gps data), GPS chip can receive 60 gps datas for one minute under normal circumstances, like this in collection transport information process, because the gps data amount receiving is very large, and the limited bandwidth of wireless data communication system, therefore all gps datas that prior art can not receive GPS chip conventionally are all uploaded to information processing centre, upload but choose some of them, common way is, according to fixing frequency acquisition (as every tens seconds or a few minutes), collecting part gps data from the gps data receiving, again the gps data collecting is sent to information processing centre, to reduce the transmission quantity of gps data.For example, in the situation that GPS chip receives a gps data one second, if the transport information upload frequencies of traffic information collection terminal be one minute once, frequency acquisition be ten seconds once, traffic information collection terminal only needs to upload 6 gps datas to information processing centre in one minute, has greatly reduced the transmission quantity of gps data.
But, inventor finds realizing in process of the present invention, in the time that floating vehicle travelling speed is slow, the distance that each GPS that GPS chip receives within a period of time is ordered is very approaching, the corresponding GPS point collecting is also just very approaching, if use fixed frequency to carry out the collection of transport information, is easy to cause the transport information redundancy that is uploaded to service end, namely, be uploaded to the multiple transport information that exist GPS point substantially to overlap in the transport information of service end; In the time that Floating Car is run at high speed, the distance between each gps data that GPS chip receives is very far away, easily causes the loss of transport information, can not obtain accurately according to the transport information collecting the actual traffic information of road.Therefore, prior art can not be taken into account the integrality of transport information uploading data amount and transport information.Visible, prior art is needed a kind of new traffic information collection mode badly to address the above problem.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide method and the device of traffic information collection, to solve existing some section traffic information redundancy of mode of existing collection transport information, and the problem of some section traffic information disappearance.
A kind of traffic information collecting method, Floating Car continues receiving traffic information according to fixed frequency, and described method comprises:
Obtain the current driving speed of Floating Car;
Judge that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining;
If different,, from the corresponding relation of preset travel speed and traffic information collection frequency, obtain the traffic information collection frequency corresponding with current driving speed, and,
According to the described traffic information collection frequency of obtaining, start when obtaining current driving speed transport information that Floating Car receives, gather transport information to be uploaded, until when in the transport information collecting, the travel speed of Floating Car is not identical with described current driving speed, finish according to the flow process of described traffic information collection frequency collection transport information, and repeat abovementioned steps.
A kind of traffic information collecting apparatus, is loaded in Floating Car, and described Floating Car continues receiving traffic information according to fixed frequency, and described device comprises:
Speed acquiring unit, for obtaining the current driving speed of Floating Car, and triggers speed judging unit;
Speed judging unit, for judging that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining, if different, trigger rate acquiring unit;
Frequency acquisition unit, for the corresponding relation of the travel speed from preset and traffic information collection frequency, obtains the traffic information collection frequency corresponding with current driving speed, and triggers traffic information collection unit;
Traffic information collection unit, for the described traffic information collection frequency of obtaining according to described frequency acquisition unit, in the time that obtaining current driving speed, described speed acquiring unit starts transport information that Floating Car receives, gather transport information to be uploaded, until when the travel speed of Floating Car is not identical with described current driving speed in the transport information collecting, trigger described speed acquiring unit.
The embodiment of the present invention has changed the mode of available technology adopting fixed frequency collection transport information, but adjust in time traffic information collection frequency according to the instantaneous velocity of Floating Car, in the time that speed is fast, improve traffic information collection frequency, in the time that speed is slow, reduce traffic information collection frequency, can guarantee to a certain extent that traffic information collection point is to be evenly distributed on road, in the case of the relatively less transport information of uploading data amount, can also make server end to obtain traffic accurately according to the transport information analysis receiving, thereby solve the technical matters that prior art exists.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 gathers one of method flow diagram of transport information in the embodiment of the present invention;
Fig. 2 be in the embodiment of the present invention, gather transport information method flow diagram two;
Fig. 3 uploads one of method flow diagram of transport information in the embodiment of the present invention;
Fig. 4 be in the embodiment of the present invention, upload transport information method flow diagram two;
Fig. 5 is the method flow diagram of retransmission data packet may in the embodiment of the present invention;
Fig. 6 is the method flow diagram of reissuing packet in the embodiment of the present invention;
Fig. 7 is one of structural representation of traffic information collecting apparatus in the embodiment of the present invention;
Fig. 8 be traffic information collecting apparatus in the embodiment of the present invention structural representation two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
For complete understanding the present invention, mention in the following detailed description numerous concrete details, but it should be appreciated by those skilled in the art that the present invention can realize without these details.In other embodiments, be not described in detail known method, process, assembly and circuit, in order to avoid unnecessarily cause embodiment fuzzy.
In the present embodiment, transport information includes but not limited to gps data, and a transport information can be a gps data.Gps data includes but not limited to that longitude and latitude that GPS orders, travel speed, Floating Car that Floating Car is ordered at GPS receive the information such as the moment (follow-up being called gathers the moment) of the gps data that this GPS orders.In Floating Car, be mounted with GPS chip, can receive the gps data that each GPS that gps satellite sends is ordered take fixed frequency (fixed frequency as 1 second, i.e. gps data of reception per second).
The traffic information collecting method that the present embodiment provides is mainly used in the traffic information collection terminal being loaded in Floating Car, and Floating Car continues receiving traffic information according to fixed frequency.
Referring to Fig. 1, for gathering the method flow diagram of transport information in the embodiment of the present invention, flow process comprises:
S101, obtain the current driving speed of Floating Car.
In the present embodiment, can be the current travel speed that often receives a transport information and immediately obtain Floating Car, can be also receive multiple transport information after, obtain the travel speed of Floating Car.The mode of obtaining Floating Car current driving speed has varied, the embodiment of the present invention does not limit, for example can directly read by the panel board of Floating Car, the historical traffic information that also can receive according to the current transport information receiving and Floating Car calculates.And in certain embodiments of the invention, preferably, can calculate in the following manner the current driving speed of Floating Car: the historical traffic information having received according to the transport information of the current reception of Floating Car and described Floating Car, calculates the current driving speed of Floating Car.It is example take transport information as gps data, the travel speed of Floating Car can calculate according to the current gps data receiving of Floating Car (being called Current GPS data) and the front gps data once receiving (being called a front gps data), as, according to the latitude and longitude coordinates in Current GPS data and a front gps data, calculate floating vehicle travelling distance, calculate the floating vehicle travelling time according to the time information in Current GPS data and a front gps data again, calculate the current driving speed of Floating Car according to the operating range of Floating Car and running time.
S102, judge that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining.Can maintain existing traffic information collection frequency if travel speed does not change, if change, carry out step below.
If S103 is different,, from the corresponding relation of preset travel speed and traffic information collection frequency, obtain the traffic information collection frequency corresponding with current driving speed.
S104, according to the described traffic information collection frequency of obtaining, start when obtaining current driving speed transport information that Floating Car receives, gather transport information to be uploaded, until when in the transport information collecting, the travel speed of Floating Car is not identical with described current driving speed, finish according to the flow process of described traffic information collection frequency collection transport information, and to gather the moment of the transport information that travel speed is not identical with aforementioned current driving speed, trigger aforementioned S101.The rest may be inferred, collects all transport information of Floating Car on whole road.
Preferably, the described travel speed traffic information collection frequency positive correlation corresponding with it.That is, speed is larger, and its corresponding traffic information collection frequency is also larger, even can make the travel speed traffic information collection frequency corresponding with it proportional, and the ratio between travel speed and traffic information collection frequency is an identical positive number all the time.Following table 1 has provided an example setting corresponding traffic information collection frequency according to different travel speeds, and wherein traffic information collection frequency representation did the collection of a gps data every several seconds, and for example frequency acquisition=2s gathers a gps data for every 2 seconds.Preferably, consider when actual medium velocity is larger can this road of apparent deduction now comparatively unimpeded, therefore go to analyze without too many transport information and can know traffic conditions, it is empirical value that the present invention reaches 90km/h(in travel speed) in, be inverse correlation by travel speed and traffic information collection set of frequency.
Table 1
Further introduce the embodiment of the present invention two below.The present embodiment, based on embodiment mono-, is the further expansion of doing on embodiment mono-basis.Embodiment mono-is mainly the gatherer process of having described transport information, and in the present embodiment, has also increased the process of uploading transport information.It is to be noted, the order embodiment of the present invention between these two processes is not done any restriction, for example can after all transport information that gather complete strips road, unify to upload again the transport information collecting, also can be that upload on collection limit, limit, can also be the transport information of every accumulation some or do not accumulate the transport information of uploading accumulation after a period of time.Preferably, for improving the collection of transport information and the whole efficiency of uploading, the embodiment of the present invention is to take collection limit, limit to upload, and as shown in Figure 2, is in the method flow described in Fig. 1, also comprises:
S105, upload the cycle according to preset transport information, periodically send to server end the transport information collecting.
In the present embodiment, can be take moment of gathering first transport information as initial time, in the time that the cycle of uploading arrives, the transport information that cycle of uploading is originally collected is uploaded to server end.
Preferably, for reducing the data volume that is uploaded to server end, in the embodiment of the present invention, before uploading transport information to server end, transport information is compressed to processing.In aforementioned S105, periodically send and collect the transport information obtaining to server end, can, referring to flow process as shown in Figure 3, specifically comprise:
S1051, from the current transport information all to be uploaded of uploading in the cycle, choose a transport information as with reference to transport information, using other transport information as ordinary traffic information;
S1052, calculating ordinary traffic information and the described difference with reference to transport information, difference comprises: longitude and latitude difference, collection moment difference and floating vehicle travelling speed difference;
S1053, package with reference to Information Monitoring and difference corresponding to each ordinary traffic information to described, obtain packet;
S1054, by described Packet Generation to server end.
In aforementioned S1051, can choose and currently upload any one transport information in the cycle as with reference to transport information, as long as server end and terminal are made an appointment.Preferably, in order to improve the efficiency of calculating ordinary traffic information and the difference with reference to transport information, in the embodiment of the present invention, in aforementioned S1051, choose current first transport information or last transport information of uploading in the cycle, as with reference to transport information.
Process by aforementioned compression, for a transport information of uploading in the cycle, do not need the full dose data (so-called full dose data refer to all data that transport information comprises) of this being uploaded to all transport information in the cycle to be uploaded to server end, only need to upload with reference to the full dose data of transport information and other transport information with respect to the difference with reference to transport information, and the data volume of difference is lower much than the data volume of full dose data.
In the embodiment of the present invention, the form of packet can be as shown in table 2, comprise data packet head, with reference to the full dose data of transport information, the incremental data of ordinary traffic information (be ordinary traffic information with difference) with reference to transport information, after each incremental data comes the full dose data with reference to transport information successively according to collection moment difference order from small to large, so that server end can be resolved packet more quickly.
Table 2
The form of the full dose data of the gps data that GPS is ordered can be as shown in table 3 below:
Table 3
Wherein confidence level is used for representing that whether the gps data that GPS orders is credible, and if confidence level value is to represent insincerely at 0 o'clock, value is to represent credible at 1 o'clock.
In above-mentioned full dose data, longitude and latitude respectively take 4 bytes, and the collection moment takies 2 bytes, and travel speed takies 1 byte, therefore the full dose data point of a gps data takies 11 bytes.
Preferably, each packet also comprises data packet head, this data packet head is for minute book packet characteristic information, and as the travel condition of vehicle of the length of record data bag, Floating Car, vehicle ID and/or other information, following table 4 has provided a kind of format sample of the data packet head that occupies 13 bytes:
Table 4
Following table 5 has provided a kind of format sample of incremental data:
Table 5
In above-mentioned incremental data form, latitude difference and longitude difference respectively take 2 bytes, gather moment difference and take 1 byte, and travel speed difference takies 1 byte, takies altogether 6 bytes.Visible while representing the data of other points by incremental data when with full dose data representation shared internal memory reduce nearly half, greatly reduced data volume.
Lift again an example, suppose that certain period collects the gps data that 30 GPS are ordered, as shown in table 6 below: table 6
According to said method, after the gps data that 30 GPS are ordered packages, the data volume that is uploaded to server is:
13 bytes (size of data packet head)+11 bytes (with reference to the size of the full dose data of transport information)+29 × 6 bytes (sizes of 29 incremental datas)=198 bytes.
If the gps data that 30 GPS are ordered does not compress processing, the upload onto the server data volume of end end of the gps data that 30 GPS need to be ordered is:
30 × 11 byte=330 bytes.
As can be seen here, employing technical solution of the present invention can reduce the data volume that is uploaded to server end after transport information to be uploaded is compressed to a great extent.
Data in packet in the embodiment of the present invention are organized into binary stream according to data protocol:
c6?ba?1d?00?ba?dc?fe?90?78?56?34?12?74?29?26?32?02?e1?3f?63?06?42?96?ab?bc00?27?01?fd?aa?7e?01?4b?02?fa?ab?45?02?66?03?f7?ab?11?03?7a?04?f4?a7?c3?03?68?05f1?a4?72?04?43?06?ee?a3?2f?05?23?07?eb?a8?17?06?2a?08?e8?af?11?07?48?09?e5?b1?1208?73?0a?e2?b1?1c?09?91?0b?df?b4?3a?0a?bb?0c?dc?b6?62?0b?f2?0d?d9?b6?87?0c?13?0fd6?b5?a8?0d?29?10?d3?b5?c8?0e?45?11?d0?b2?d6?0f?54?12?cd?b2?f0?10?58?13?ca?b1?0312?65?14?c7?b0?04?13?6e?15?c4?b0?0e?14?6b?16?c1?ae?15?15?70?17?be?ae?17?16?6c?18bb?ae?15?17?65?19?b8?ad?03?18?65?1a?b5?a8?d3?18?45?1b?b2?a3?8b?19?18?1c?af?a4?471a?02?1d?ac?a8?19?1b?16?1e?a9?ae
Wherein:
The 1st byte: c6 is data package size 198 bytes;
2nd ~ 3 bytes: ba 1d is vehicle-state;
The 4th byte: 00, be growth data length;
5th ~ 12 bytes: a ba dcfe9078563412(8 byte), for representing vehicle ID, 1234567890fedcba;
The 13rd byte: 74, be the instant position angle 116 of GPS;
14th ~ 24 byte: 29263202e13f63064296ab, are full dose data,
Latitude 0x02322629, longitude 0x06633fel, time 0x9642, speed 0x2B, confidence level 0x1.
Since the 25th byte, an incremental data corresponding to GPS point of every 6 byte representations.
Further introduce the embodiment of the present invention three below.The present embodiment, based on embodiment bis-, is the further expansion of doing on embodiment bis-bases.In the present embodiment, sending after packet to server end, increasing the feedback information that reception server end sends, whether sending successfully according to feedback information specified data bag, determining retransmission data packet may while sending unsuccessfully, to guarantee that Packet Generation successfully.Particularly, can after the S1054 of the flow process shown in Fig. 3, also comprise S1055, as shown in Figure 4:
S1055, receive the feedback message of described server end; Judge according to described feedback message whether described packet sends successfully; If unsuccessful, retransmit described packet to described server end, if described feedback message is ignored in success.
In the present embodiment, in order to guarantee the reliability of data upload, can adopt the mode of UDP to send packet to described server end.
Preferably, for avoiding the number of times of retransmission data packet may too many, aforementioned S1055 retransmits described packet to described server end in the time judging that Packet Generation is unsuccessful, can adopt method flow as shown in Figure 5, and method flow comprises:
S501, judge whether retransmit the number of times of described packet is less than preset number of retransmissions threshold value, if carry out S502, otherwise process ends.
S502, foundation are connected with the network of server end.Be that terminal attempts setting up network with server and being connected.
S503, judge whether to be successfully established, if S504 is carried out in success, otherwise carry out S508.
S504, send described packet to server end.
S505, judge in preset time threshold value, whether receive server end send feedback message, if carry out S506, otherwise carry out S508.
S506, the feedback message receiving is tested, judge that whether the value of feedback in feedback message is correct, if correctly carry out S507, otherwise carry out S508.
S507, identification data packet send successfully.
S508, identification data packet send unsuccessfully.
S509, close network connect.
When terminal sends packet, each transmission all can waiting for server end feedback message, and the feedback message receiving is verified, if do not receive that the value of feedback in the feedback message of server end or the feedback message of server is incorrect, retransmission data packet may.
Preferably, for further guaranteeing Packet Generation success, if reach the preset pre-postpone of number of retransmissions for the number of times of a data packet retransmission, still packet is not successfully sent to server end, this packet is saved in local preset buffer area, then reissues flow process by data as shown in Figure 6 and process.
Queue can be set in buffer area, and packet is ranked according to buffer memory sequencing, and the packet of buffer memory is added to the head of the queue of queue at first, and the packet of last buffer memory is added to the tail of the queue of queue.Judge when current network condition is better, according to Queue sequence, send successively packet.
Fig. 6 is the process flow diagram that in the embodiment of the present invention three methods, packet is reissued, and comprising:
S601, obtain network state.Obtain the current connection status of terminal and server end.
S602, judge whether network connects, if continue to carry out, skip to if not S607 downwards.
S603, judge in queue, whether there is packet.Continue to carry out downwards if having, skip to if not S607.
First packet in S604, transmission buffer queue.
S605, judge whether first packet sends successfully, if enter S606, skip to if not S607.
S606, described first packet is deleted from buffer queue, and entered S608.
S607, judge that whether the quantity of the packet in buffer queue exceedes preset packet threshold value, if enter S606, enters S608 if not.
S608, stand-by period T.For example wait for 20s.
S609, judge whether to exit, if process ends skips to S601 if not.
The above data process of reissuing can improve Packet Generation success ratio.
Referring to Fig. 7, the structural representation of the traffic information collecting apparatus providing for the embodiment of the present invention, this device is loaded in Floating Car, and device comprises:
Speed acquiring unit 71, for obtaining the current driving speed of Floating Car, and triggers speed judging unit 72;
Speed judging unit 72, for judging that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining, if different, trigger rate acquiring unit 73;
Frequency acquisition unit 73, for the corresponding relation of the travel speed from preset and traffic information collection frequency, obtains the traffic information collection frequency corresponding with current driving speed, and triggers traffic information collection unit;
Traffic information collection unit 74, for the described traffic information collection frequency of obtaining according to described frequency acquisition unit 73, in the time that obtaining current driving speed, described speed acquiring unit 71 starts transport information that Floating Car receives, gather transport information to be uploaded, until when the travel speed of Floating Car is not identical with described current driving speed in the transport information collecting, trigger described speed acquiring unit 71.
Preferably, described speed acquiring unit 71, specifically for the historical traffic information that received according to the transport information of the current reception of Floating Car and described Floating Car, calculates the current driving speed of Floating Car.
Preferably, the device described in earlier figures 7, also can comprise transport information uploading unit 75, as shown in Figure 8:
Transport information uploading unit 75, for uploading the cycle according to preset transport information, periodically sends to server end the transport information collecting.
Preferably, the structure of described transport information uploading unit 75 as shown in Figure 8, comprising:
Choose subelement 751 with reference to transport information, for choosing a transport information from the current transport information all to be uploaded of uploading in the cycle as with reference to transport information, using other transport information as ordinary traffic information;
Difference computation subunit 752, for calculating ordinary traffic information and the described difference with reference to transport information, difference comprises: longitude and latitude difference, collection moment difference and floating vehicle travelling speed difference;
Packet generates subelement 753, for packaging with reference to Information Monitoring and difference corresponding to each ordinary traffic information to described, obtains packet;
Packet Generation subelement 754, for generating described packet Packet Generation that subelement 753 obtains to server end.
Preferably, the transport information uploading unit 75 in the embodiment of the present invention can also comprise on the basis shown in Fig. 8
Feedback processing subelement 755, the feedback message sending for receiving described server end; Judge according to described feedback message whether described packet sends successfully; If unsuccessful, retransmit described packet to described server end, if described feedback message is ignored in success.
For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part is referring to the part explanation of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
One of ordinary skill in the art will appreciate that all or part of step realizing in said method embodiment is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in computer read/write memory medium, here the alleged storage medium obtaining, as: ROM, RAM, magnetic disc, CD etc.
Also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Applied specific case herein and principle of the present invention and embodiment have been carried out to lock stated, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (13)
1. a traffic information collecting method, is characterized in that, Floating Car continues receiving traffic information according to fixed frequency, and described method comprises:
Obtain the current driving speed of Floating Car;
Judge that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining;
If different,, from the corresponding relation of preset travel speed and traffic information collection frequency, obtain the traffic information collection frequency corresponding with current driving speed;
According to the described traffic information collection frequency of obtaining, start when obtaining current driving speed transport information that Floating Car receives, gather transport information to be uploaded, until when in the transport information collecting, the travel speed of Floating Car is not identical with described current driving speed, finish according to the flow process of described traffic information collection frequency collection transport information, and repeat abovementioned steps.
2. method according to claim 1, is characterized in that, the traffic information collection frequency positive correlation that travel speed is corresponding with it.
3. method according to claim 1, is characterized in that, described in obtain the current driving speed of Floating Car, specifically comprise:
The historical traffic information having received according to the transport information of the current reception of Floating Car and described Floating Car, calculates the current driving speed of Floating Car.
4. method according to claim 1, is characterized in that, described method also comprises:
Upload the cycle according to preset transport information, periodically send to server end the transport information collecting.
5. method according to claim 4, is characterized in that, periodically sends and collects the transport information obtaining to server end, specifically comprises:
From the current transport information all to be uploaded of uploading in the cycle, choose a transport information as with reference to transport information, using other transport information as ordinary traffic information;
Calculate ordinary traffic information and the described difference with reference to transport information, difference comprises: longitude and latitude difference, collection moment difference and floating vehicle travelling speed difference;
Package with reference to Information Monitoring and difference corresponding to each ordinary traffic information to described, obtain packet;
By described Packet Generation to server end.
6. method according to claim 5, is characterized in that, chooses a transport information as with reference to transport information from the current transport information all to be uploaded of uploading in the cycle, specifically comprises:
Choose current first transport information or last transport information of uploading in the cycle, as with reference to transport information.
7. method according to claim 5, is characterized in that, described packet, after server end sends, is also comprised:
Receive the feedback message that described server end sends;
Judge according to described feedback message whether described packet sends successfully;
If unsuccessful, retransmit described packet to described server end, if described feedback message is ignored in success.
8. according to the method described in claim 1 ~ 7 any one, it is characterized in that, each transport information is a gps data that GPS is ordered.
9. a traffic information collecting apparatus, is characterized in that, is loaded in Floating Car, and described Floating Car continues receiving traffic information according to fixed frequency, and described device comprises:
Speed acquiring unit, for obtaining the current driving speed of Floating Car, and triggers speed judging unit;
Speed judging unit, for judging that whether described current driving speed is identical with the travel speed of the front Floating Car of once obtaining, if different, trigger rate acquiring unit;
Frequency acquisition unit, for the corresponding relation of the travel speed from preset and traffic information collection frequency, obtains the traffic information collection frequency corresponding with current driving speed, and triggers traffic information collection unit;
Traffic information collection unit, for the described traffic information collection frequency of obtaining according to described frequency acquisition unit, in the time that obtaining current driving speed, described speed acquiring unit starts transport information that Floating Car receives, gather transport information to be uploaded, until when the travel speed of Floating Car is not identical with described current driving speed in the transport information collecting, trigger described speed acquiring unit.
10. device according to claim 9, is characterized in that, described speed acquiring unit, specifically for:
The historical traffic information having received according to the transport information of the current reception of Floating Car and described Floating Car, calculates the current driving speed of Floating Car.
11. devices according to claim 9, is characterized in that, described device also comprises:
Transport information uploading unit, for uploading the cycle according to preset transport information, periodically sends to server end the transport information collecting.
12. devices according to claim 11, is characterized in that, described transport information uploading unit, specifically comprises:
Choose subelement with reference to transport information, for choosing a transport information from the current transport information all to be uploaded of uploading in the cycle as with reference to transport information, using other transport information as ordinary traffic information;
Difference computation subunit, for calculating ordinary traffic information and the described difference with reference to transport information, difference comprises: longitude and latitude difference, collection moment difference and floating vehicle travelling speed difference;
Packet generates subelement, for packaging with reference to Information Monitoring and difference corresponding to each ordinary traffic information to described, obtains packet;
Packet Generation subelement, for generating described packet Packet Generation that subelement obtains to server end.
13. devices according to claim 11, is characterized in that, described transport information uploading unit, also comprises:
Feedback processing subelement, the feedback message sending for receiving described server end; Judge according to described feedback message whether described packet sends successfully; If unsuccessful, retransmit described packet to described server end, if described feedback message is ignored in success.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592866.7A CN103914978A (en) | 2012-12-31 | 2012-12-31 | Vehicle information collection method and apparatus |
| CN201810273773.5A CN108629969A (en) | 2012-12-31 | 2012-12-31 | A kind of traffic information collecting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592866.7A CN103914978A (en) | 2012-12-31 | 2012-12-31 | Vehicle information collection method and apparatus |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810273773.5A Division CN108629969A (en) | 2012-12-31 | 2012-12-31 | A kind of traffic information collecting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103914978A true CN103914978A (en) | 2014-07-09 |
Family
ID=51040623
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810273773.5A Pending CN108629969A (en) | 2012-12-31 | 2012-12-31 | A kind of traffic information collecting method and device |
| CN201210592866.7A Pending CN103914978A (en) | 2012-12-31 | 2012-12-31 | Vehicle information collection method and apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810273773.5A Pending CN108629969A (en) | 2012-12-31 | 2012-12-31 | A kind of traffic information collecting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108629969A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096595A (en) * | 2015-06-30 | 2015-11-25 | 北京奇虎科技有限公司 | Data transmission method based on automobile driving recorder and device |
| CN106153058A (en) * | 2015-04-13 | 2016-11-23 | 酷派软件技术（深圳）有限公司 | Air navigation aid, device and terminal |
| CN107833626A (en) * | 2017-10-19 | 2018-03-23 | 珠海格力电器股份有限公司 | Method and system for drawing activity curve by sensing human body activity |
| CN108230673A (en) * | 2017-12-29 | 2018-06-29 | 武汉斑马快跑科技有限公司 | A kind of route or travel by vehicle monitoring method, driver's client and server |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946564B (en) * | 2019-03-15 | 2021-07-27 | 国网智能科技股份有限公司 | Distribution network overhead line inspection data acquisition method and inspection system |
| CN109990767A (en) * | 2019-03-15 | 2019-07-09 | 山东鲁能智能技术有限公司 | Inspection data acquiring frequency setting method and system suitable for vehicle-mounted Distribution itineration check |
| CN110782551A (en) * | 2019-10-24 | 2020-02-11 | 北京百度网讯科技有限公司 | Data processing method and device, electronic equipment and storage medium |
| CN116935665B (en) * | 2023-09-18 | 2023-11-24 | 徐州帝亨网络科技有限公司 | Traffic control system for cargo transportation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398101A (en) * | 2001-07-13 | 2003-02-19 | 厦门雅迅网络股份有限公司 | Method for transmitting satellite location data of vehicles |
| CN101681495A (en) * | 2007-07-11 | 2010-03-24 | 本田技研工业株式会社 | Traffic information processor, traffic information management server, traffic information management system |
| CN202049615U (en) * | 2011-04-01 | 2011-11-23 | 上海千年工程建设咨询有限公司 | Drive time predicating device |
| JP2011258017A (en) * | 2010-06-09 | 2011-12-22 | Toyota Infotechnology Center Co Ltd | Probe car system, vehicle for the same, and traffic information sharing method for the same |
-
2012
- 2012-12-31 CN CN201810273773.5A patent/CN108629969A/en active Pending
- 2012-12-31 CN CN201210592866.7A patent/CN103914978A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398101A (en) * | 2001-07-13 | 2003-02-19 | 厦门雅迅网络股份有限公司 | Method for transmitting satellite location data of vehicles |
| CN101681495A (en) * | 2007-07-11 | 2010-03-24 | 本田技研工业株式会社 | Traffic information processor, traffic information management server, traffic information management system |
| JP2011258017A (en) * | 2010-06-09 | 2011-12-22 | Toyota Infotechnology Center Co Ltd | Probe car system, vehicle for the same, and traffic information sharing method for the same |
| CN202049615U (en) * | 2011-04-01 | 2011-11-23 | 上海千年工程建设咨询有限公司 | Drive time predicating device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153058A (en) * | 2015-04-13 | 2016-11-23 | 酷派软件技术（深圳）有限公司 | Air navigation aid, device and terminal |
| CN105096595A (en) * | 2015-06-30 | 2015-11-25 | 北京奇虎科技有限公司 | Data transmission method based on automobile driving recorder and device |
| CN107833626A (en) * | 2017-10-19 | 2018-03-23 | 珠海格力电器股份有限公司 | Method and system for drawing activity curve by sensing human body activity |
| CN108230673A (en) * | 2017-12-29 | 2018-06-29 | 武汉斑马快跑科技有限公司 | A kind of route or travel by vehicle monitoring method, driver's client and server |
| CN108230673B (en) * | 2017-12-29 | 2020-09-29 | 武汉斑马快跑科技有限公司 | Vehicle driving route monitoring method, driver client and server |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108629969A (en) | 2018-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103914978A (en) | Vehicle information collection method and apparatus | |
| JP4633505B2 (en) | Traffic information generating device, traffic information generating method, traffic information providing device, and traffic information distribution system | |
| CN112955943B (en) | System, server computer, in-vehicle device, control method, semiconductor integrated circuit, and recording medium | |
| CN104217588B (en) | A kind of Real-time Traffic Information acquisition methods, server and system | |
| CN101877175A (en) | Method and system for generating traffic information and navigation terminal | |
| AU2011213805A1 (en) | Method and radio beacon for transmitting messages in a road communication system | |
| CN107014392B (en) | Route planning method and equipment | |
| CN106961473A (en) | High-efficiency data transmission method and system for dynamically balancing intelligent city network bandwidth | |
| CN102664718A (en) | Wireless side TCP (Transmission Control Protocol) data retransmission method and equipment | |
| CN105450785A (en) | File transmission method and device | |
| CN103605725A (en) | Bus arrival time inquiring method, NFC terminal and server | |
| CN113691623A (en) | Software configuration method and device of vehicle-mounted Tbox and cloud platform | |
| CN105450720A (en) | GPS data collection and transmission method and device | |
| EP2795852A1 (en) | Data collection piggyback protocol | |
| CN104809907B (en) | Automatic bus route diversion acquisition method | |
| TW202016873A (en) | A system to optimize scats adaptive signal system using trajectory data | |
| CN105809750A (en) | ETC charging method, device and system | |
| KR101079219B1 (en) | Apparatus for generating traffic information, mobile terminal, Apparatus and Method for gathering traffic information | |
| CN104464027A (en) | Battery data acquisition method and device based on electromobile | |
| CN102297699B (en) | Method and device for planning real-time road-condition route | |
| CN103413434A (en) | Information processing method suitable for bus operation number real-time statistics | |
| CN101471935B (en) | Data transmission method and system as well as terminal equipment and server | |
| CN110363982A (en) | Model recognizing method, terminal device and storage medium based on roadside radio-cell | |
| CN109872529B (en) | Traffic flow information acquisition method and device based on LTE-V communication | |
| KR100838272B1 (en) | Terminal for collecting traffic information, traffic information providing system using the terminal and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |