CN105704158A - Vehicle operation data communication method for mobile terminal - Google Patents
Vehicle operation data communication method for mobile terminal Download PDFInfo
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- CN105704158A CN105704158A CN201610216771.3A CN201610216771A CN105704158A CN 105704158 A CN105704158 A CN 105704158A CN 201610216771 A CN201610216771 A CN 201610216771A CN 105704158 A CN105704158 A CN 105704158A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/4061—Push-to services, e.g. push-to-talk or push-to-video
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
Abstract
The invention provides a vehicle operation data communication method for a mobile terminal. The method includes that a cloud server collects real time state data of the mobile terminal and performs matching and pushing on the real time state data and the content information of the cloud server; and a user plays pushed content based on a selected content display method. The invention discloses the vehicle operation data communication method for the mobile terminal. Content is pushed to the vehicle terminal in a pointed manner through position locating, so that flexibility and value of information share are improved and health development of a whole industry is realized.
Description
Technical field
The present invention relates to car networking, particularly to a kind of mobile terminal vehicle operation data communication means。
Background technology
Internet of Things can play the part of more and more important role in daily life, and car networking is grow up on the basis of Internet of Things in fact, by the intelligent identification technology on vehicle and cordless communication network, realize the present situation of all vehicles, positional information and other dynamic static informations are obtained and applied, and in car networked platforms, vehicle is supervised according to different positions and functional requirement and service is provided。But mobile internet service and location push content is growing all by the daily receptible degree beyond people, while information on services increases, the abilities such as the interface display of mobile terminal device, terminal processes but do not have corresponding growth rate, therefore the location-based service technology of Smartphone device and mobile internet environment and mobile push technology, if being directly used in vehicular applications environment, then have again more limitation。In addition when driving, the chance of data interaction operation is few, it is desirable to simplify the operation to data as far as possible, and provides and facilitate simple data manipulation form。Data are shortened, be rolled back operation chance reduces, obtain display machine can restricted etc. composite factor be superimposed so that the application of vehicle-mounted mobile information pushing is difficult to self data-pushing applicable。
Summary of the invention
For solving the problem existing for above-mentioned prior art, the present invention proposes a kind of mobile terminal vehicle operation data communication means, including:
Cloud server gathers the real-time status data of mobile terminal, by described real-time status data with and the content information of cloud server carry out mating and pushing, user plays the content of propelling movement based on selected content displaying mode。
Preferably, described cloud server gathers the real-time status data of mobile terminal, by described real-time status data with and the content information of cloud server carry out mating and pushing, farther include:
Car-mounted terminal initializes, and sets up data buffer storage and classification queue after starting, and is attached by communication protocol module and backstage cloud server in wireless network connectivity situation, sets up the data channel uploaded and downloaded；
Content information or other types data are pushed in car-mounted terminal by wireless data channel by backstage cloud server, after car-mounted terminal receives, are saved in respectively in queue according to the property value of propelling data in data buffer storage；
In vehicle travel process, car-mounted terminal carries out real-time location according to the location positioning module of self, and coordinate X, Y of each data in data value X, Y of the position plane coordinate obtained and data buffer storage are carried out Euclidean distance calculating。To the data less than distance to a declared goal, it is determined that have Data Matching to current location, then data ready mark is set, and the pointer of data is registered in the ready queue of data buffer storage。Arrive without Data Matching, then repeat above-mentioned location；
When ready queue is not sky, car-mounted terminal first checks for data attribute, if contents attribute data, then Scheduling content controls module and applies control, and if not content-data, then directly scheduled media displaying or audio engine carry out the displaying of data；After having shown, lifetime property according to data is automatically removed and has been completed data message, or preserves back former queue after revising its broadcasting time property value, waits that next time is shown；
After having shown every time, namely according to the priority of each data under individual queue in priority adjustment algorithm calculating buffer memory, duration calculation mail downloading charge according to user's display data is also saved in user's accumulated cost value, then by the click displaying action of user, displaying action, refusal displaying action are postponed, and action time of origin, pass to performance characteristic record data structure according to action encoded radio, after encapsulation, upload packet to backstage cloud server。
Preferably, described user plays the content of propelling movement based on selected content displaying mode, farther includes:
Described content displaying mode includes real-time exhibition, manually displaying, road conditions are shown, described real-time exhibition represents after vehicle location with content-data position calculation, trigger displaying condition and show immediately, after described manual displaying represents that user triggers displaying condition, shown by user's manual key, described road conditions are shown, terminal control add and show content, increase broadcasting time；
In whole displaying control process, first it is the displaying attribute of chosen content information, then extracts content circulation time interval；Then preferentially show power according to what priority adjustment algorithm obtained content information, there is the highest preferential content information showing power and shown at first；For content of multimedia, change one audio frequency of program setting for text audio frequency and play queue；The audio frequency to be played that any time system produces is all inserted into this audio frequency and plays queue, and text audio frequency converse routine extracts audio presentation successively from this queue。
The present invention compared to existing technology, has the advantage that
The present invention proposes a kind of mobile terminal vehicle operation data communication means, pushes content to car-mounted terminal targetedly by location positioning, improves motility and the value of information sharing, it is achieved whole industry situation develops in a healthy way。
Accompanying drawing explanation
Fig. 1 is the flow chart of mobile terminal vehicle operation data communication means according to embodiments of the present invention。
Detailed description of the invention
Hereafter provide the detailed description to one or more embodiment of the present invention together with the accompanying drawing of the diagram principle of the invention。Describe the present invention in conjunction with such embodiment, but the invention is not restricted to any embodiment。The scope of the present invention is limited only by the appended claims, and the present invention contains many replacements, amendment and equivalent。Set forth many details in the following description to provide thorough understanding of the present invention。These details are provided for exemplary purposes, and the present invention can also be realized according to claims without some in these details or all details。
An aspect of of the present present invention provides a kind of mobile terminal vehicle operation data communication means。Fig. 1 is mobile terminal vehicle operation data communication means flow chart according to embodiments of the present invention。
Location-based vehicle-mounted data supplying system, by arranging propelling data transport module, data buffer storage, data priority management module, position calculation computing module, message loop displaying control module, content-control algorithm and statistical module in the software system of car-mounted terminal, cooperate with vehicle mobile terminals hardware and backstage cloud server, according to priority, propelling data is circulated process, user is attracted to receive data, it is achieved the management of vehicle mobile terminals part propelling data and displaying。
The data that model is uploaded are the real-time status data of terminal, and the data such as positional information, speed, terminal battery electricity quantity are uploaded to cloud server。The data downloaded include software upgrading bag, music file, the information of propelling movement, the order that also has service profiles and cloud server to assign。
The warning that hypervelocity playing module triggers when speed exceedes the threshold value of regulation。Navigation playing module plays navigation information。When connecting navigation cloud server and sending request uploading position data, the segmented paths guide packet that cloud server returns can be received。Mobile playing module is actively supervised reception by terminal, when car there occurs illegal movement, then calls this broadcasting。Electricity playing module is managed by the power manager of mobile terminal, plays out when prison receives when electric quantity of power supply is low or external power supply disconnects。
Location-based message loop pushes and is made up of Dynamic Matching, hierachical decomposition, three parts of loop control。The dynamic position Data Matching process that Dynamic Matching calculates based on real time position, the substance such as including the propelling movement of dynamic data, renewal, storage, queue management；Priority is contrasted the problem that PROBLEM DECOMPOSITION is three different stages by hierachical decomposition, dynamic data priority contrast under same path, is determined the priority initial value of all data by five basic parameters such as parameters sortnig of bidding, broadcasting time parameter, waiting time parameter, intercycle parameter, cross-correlation coefficient and weight coefficient thereof。Adjacent path and adjacent area then contrast at same path priority increases boundary condition parameter on basis；
Loop control dynamically and under multiparameter correlated condition, is finding the optimum span of each weight coefficient so that the fuzzy overall evaluation function of system can obtain optimal solution。
The communication module of car networked information service platform is responsible for carrying out data interaction with service end, and audio-frequency module is responsible for the information of terminal is played out, and these and information pushing comprising modules constitute the framework of whole model。The function declaration of each several part is as follows:
(1) data transmission module: pass through wireless Internet, communication protocol according to client Yu cloud server, communicate with cloud server, cloud server access authority authentication is carried out response, it is packaged uploading data, unpack downloading data, and the data after unpacking are distributed to other corresponding modules carry out Treatment Analysis。For dynamic data, the packing forms adopting Frame is transmitted, namely own unless the context, by arranging data frame structure, also can comprise other many attribute, as cloud server sets priority, broadcasting time, life cycle, propelling movement time length etc., each property value is equipped with dynamically can arranging weight, and such data structure form can realize various control effect by setting and Update attribute flexibly。
(2) data buffer storage: this buffer memory is made up of database file and classified index file, propelling data can be stored, interpolation, sequence, the operation such as renewal。Data preserve according to classification and life cycle in buffer memory, and cloud server can notify that under networking situation buffer update or notice legacy data lost efficacy, and updates queue after buffer memory is notified。
(3) data priority management module: position data is pushed to local cache, and carries out prioritization according to changeable weight。Changeable weight by five basic parameters such as parameters sortnig of offering, broadcasting time parameter, waiting time parameter, intercycle parameter, cross-correlation coefficient and weight coefficient thereof to calculate decision, change along with broadcasting time and waiting time, originally the preferred value of high priority target will be gradually lowered, and low priority target priority value raises and obtains display machine meeting。
(4) position computation module: this module calculates the real-time location coordinates of vehicle, and carries out Euclidean distance calculating with the coordinate attributes field of each data of buffer memory, once less than distance to a declared goal scope, trigger data can show condition。Displaying order is set up according to priority。
(5) displaying controls module: when being demonstrated when there being data to need, and produces prompting according to classification, and user may select and receives or do not receive, and pushes button and can complete to receive, keeps not receiving within a period of time, loses content fee and uses。User can select difference classification carry out rollback reception by button, but the rollback exceeding duration receive can decreasing expense or no longer pay expense。After rollback receives, data are still saved in buffer memory classification queue, until life cycle stops or being deleted by cloud server notice renewal。The displaying of the different modes such as classification rollback displaying, track rollback displaying, real-time ready displaying can be realized。
(6) statistical module: receive the situation of propelling data according to user, statistics expense also records the performance characteristic of user, then cost value and operating time, concrete action attributes etc. are passed to data transmission module, and it is uploaded to cloud server by it, user account expense is updated, and record the behavior characteristics of user, preserve initial data for analyzing these features further。When computational costs, to receiving operation in effective time, pay expense according to total head, operation is shown in the rollback beyond effective time, successively decrease calculating according to half-life time, namely every three days (or specifying time according to data producer) decreasing cost half。
(7) content control module: the i.e. data to contents attribute, duration and the interval specified according to acquiescence or content provider are shown control, limit its showroom interval, show total duration, to avoid user's transition is disturbed, and in conjunction with priority adjustment algorithm, content displaying is circulated displaying control。
(9) priority adjustment: the dynamic adjustment being responsible in data buffer storage the priority value of all information, by calculating the priority of data resource, and dynamically adjusts the priority of all data resources after showing each time。
Wherein:
(1) cloud server priority according to sequence price fixing data, and by wireless network and communication protocol, broadcast and propelling data download in vehicle mobile terminals；
(2) vehicle mobile terminals sets up categorical data buffer memory: and the data received are stored in queue according to categorical attribute；
(3) real time position calculates: calculate the difference between the position attribution data of data in current vehicle location and data buffer storage, as then entered matching range less than the threshold value geographic range set, proceeds to step 4, otherwise repeats this step；
(4) display data is ready: extract the pointer of the data that the 3rd step coupling obtains, and pointer is saved in displaying ready queue。If now showing that ready queue does not have other tasks, then now start broadcasting process and start to show task；If there being data showing, or queue also has higher priority task, then enter waiting state；
(5) control is shown: check lifetime property and the contents attribute of data in ready queue, the data call content-control algorithm with contents attribute is being shown restriction, then the data that can show are started broadcasting process, incoming ready data is shown, user oneself can control the mode shown, and realize the basic functions such as time-out, continuation, volume adjustment, broadcasting time property value in its attribute of data modification that each displaying is completed, then preserve back buffer queue；
(6) content control module: if having continuous print data all to have contents attribute when showing, then insert time slice, restriction show duration and showroom every；
(7) priority adjustment, waits that the preferred value of these data is carried out again calculating and distribution by priority adjustment；
(8) data buffer storage is according to newly-generated numerical priority value, updates each data attribute in buffer memory；
(9) expense statistics and performance characteristic record: the operation according to user, records current state-event value, operating time, performance characteristic value, and generates current cost data according to duration, then pass data to next step；
(10) data waiting for transmission being encapsulated according to communication protocol, then call radio network interface, data are uploaded cloud server, namely cloud server updates user account information according to current cost information after receiving these data。
In same section of road, due to the movement of vehicle, being only possible to limited location-based service propelling movement content can be pushed to, and therefore there is the contrast of location service information；Limited owing to showing time and link length, it is limited for hence allowing to pushed data resource；Owing to vehicle moves, the last period, the information of road was not also shown, the high priority message that in queue, the information of low priority newly may be matched by next section replaces or covers。The location service information that contrast is won victory should not occupy superiority for a long time, and otherwise in same section, other location service informations will exit because obtaining pusher meeting, causes ecological collapse the most at last, it is therefore desirable to the circulation model of location service information。In conjunction with other priority scheduling algorithms, show that the priority of the round-robin algorithm that vehicle-mounted location service information pushes has two kinds: one to be the unrelated propelling movement content prioritization in position；Two is the propelling movement content prioritization that position is relevant。
So, the location push content prioritization relevant to position is made up of following several respects:
One is the priority J that i-th pushes that content is obtained by sequence in kth sectionik, its value size is by quotation bikDetermine；Two be i-th push content in kth section owing to failing to obtain to show that creating the accumulation that the waiting time causes waits priority Tik；Three is that i-th pushes content in kth section owing to being shown the priority R causing reducingik。
Vehicle-mounted location service information priority is each several part priority sum, and namely i-th pushes the content comprehensive priority P in kth sectionik=A × Jik+B×Tik+C×Rik, wherein, A, B, C be this three parts priority proportion size respectively, A+B+C=1。
For reasonable distribution resource, it is necessary to the displaying time of the information of a certain position is reasonably distributed, peripheral information is made as far as possible perfectly to react to user。The dynamic adjustment of the priority value that algorithm is responsible in data buffer storage all data。Dynamic position data determine the ownership of showing resource by the comprehensive priority of self, therefore the priority of data resource is calculated, and after showing each time, dynamically adjust the priority of all data resources, carry out the resource in control system and recycled and can realize the circulation of dynamic position data priority and control。Assume that vehicle is through same path, then the step of whole priority value round is as follows:
(1) vehicle is to after ad-hoc location, it is determined that need circle exhibiting information；
(2) size of these information priorities is calculated according to priority algorithm；
(3) first obtain showing the information that priority is the highest；Each parameter value is adjusted after displaying；
(4) when vehicle again passes by same position, same execution step 2 and 3, until the life cycle reaching circulation just can stop；
In priority adjusts, being each message queue one static weight of distribution according to traffic performance, this weight represents the proportion obtaining priority。The scheduling of the message queue in priority adjustment carries out according to priority circulation, first cloud server processes the queue of high priority, until this message queue is shown complete, the setting of priority is carried out further according to algorithm, then carry out the displaying of message queue next time, when certain queue is empty, then be recycled to next queue scheduling, circulation carries out successively, until leaving this destination。
Location-based content information is pushed through the location to position, identify positional information, the geographical position of user is acquired, then objective attribute target attribute and content information are carried out intellectual analysis and mate, realizing the propelling movement at ad-hoc location customizing messages, user selectively can also show according to the hobby of oneself。
Location-based content information cyclic control system by managing module, display module, accounting module form。Management module is responsible for the collection of content information, analyzing and processing and the setting to priority, and display module is responsible for, according to priority, information is circulated displaying, and accounting module is then that the information being shown is carried out statistical computation。Data to contents attribute, are shown control according to acquiescence or the duration specified of content provider and interval, limit its showroom interval, show total duration, and in conjunction with priority adjustment, content displaying are circulated displaying control。User according to self use habit, can arrange the different display forms such as real-time exhibition, manually displaying, road conditions displaying。Display form is as follows:
One, real-time exhibition: after vehicle location with content-data position calculation, triggers displaying condition and shows immediately, and the cost ratio coefficient of real-time exhibition is 1。
Two, manually showing: after user triggers displaying condition, show user's manual key, manually show that cost ratio coefficient is also 1 in duration, but increase over time, cost ratio successively decreases decline。
Three, according to user, road conditions being shown the psychological characteristics that acceptance is higher, also optional road conditions are shown, terminal control add and show content, and to increase broadcasting time, now cost ratio takes compromise value。
Whole displaying control process is as follows:
First it is the displaying attribute of chosen content information, then extracts content circulation time interval；Preferentially show power according to what priority adjustment algorithm obtained content information afterwards, there is the highest preferential content information showing power and shown at first。User can select according to the needs of oneself, then carries out studying paid cost coefficient and calculates；Finally, priority recalculates, and is sequentially carried out circularly exhibiting。
Change one audio frequency of program setting for text audio frequency and play queue。The audio frequency to be played that any time system produces is all inserted into audio frequency and plays queue, and converse routine extracts audio presentation successively from this queue。Audio frequency has been added priority attribute, priority is divided into 3 grades: 0 is normal priority, 1 be warning priority, 2 for system level priority, 3 empty above all audio frequency and showing immediately。The audio frequency that audio queue can extract priority the highest plays out。
Process is realized individually below from mobile terminal, client and three introduction Information Push Service of alignment system。Client is by alignment system transmission customer position information to cloud server, cloud server center calculation goes out location data, as long as positional information is capable of identify that, cloud server will be triggered according to customer location and information sending strategy, the information relevant to region is sent to and is correlated with to user。Finally, entering the service procedure of information pushing, the relevant propelling movement content selected through cloud server utilizes push technology to be sent to mobile terminal through mobile network or other communication networks, and client will receive the location service information sent from cloud server。
First being sent gps data by client before information pushing, information is processed after receiving location information data by cloud server, including classification, priority setting, displaying time。Information content is packaged processing after having processed by cloud server, is then passed through network and is sent to client, and client is shown according to the priority arranged after receiving。
Based on use above flow process, complete Information Push Service includes two parts, and a part is client-side program；Another part is cloud server program, runs in the cloud server of backstage。Info push module is the main part of whole model, on the one hand it to be responsible for calling and relevant pushes algorithm, completes the screening of information, on the other hand after user needs to carry out information pushing, pushing module will be called to carry out pushing content, calls the information screened and pushes。Location-based info push module is the most important part of whole model, and it ensures the smooth realization of whole information pushing model。
(1) after car-mounted terminal starts, carry out a series of initialization, and set up data buffer storage and classification queue, in wireless network connectivity situation, be attached by communication protocol module and backstage cloud server, set up the data channel uploaded and downloaded。
(2) content information or other types data are pushed in car-mounted terminal by wireless data channel by backstage cloud server, after car-mounted terminal receives, are saved in respectively in queue according to the property value of propelling data in data buffer storage。
(3) in vehicle travel process, car-mounted terminal carries out real-time location according to the location positioning module of self, and by coordinate X, Y of each data in data value X, Y of position plane coordinate of obtaining and data buffer storage, the two is carried out Euclidean distance calculating。To the data less than distance to a declared goal, namely think there is Data Matching to current location, then data ready mark is set, and the pointer of these data is registered in the ready queue of data buffer storage。Arrive without Data Matching, then repeat above-mentioned location。
(4) when ready queue is not empty, displaying in vehicle terminal software controls module and is activated, first check for data attribute, if contents attribute data, then Scheduling content controls module and applies control, if not content-data, then directly scheduled media displaying or audio engine carry out the displaying of data。After having shown, lifetime property according to data is automatically removed and has been completed data message, or preserves back former queue after revising its broadcasting time property value, waits that next time is shown。
(5) content control module is being demonstrated control module schedules then, and duration and the interval specified according to acquiescence or content provider are shown control, limit its showroom interval, show total duration, to avoid user's transition is disturbed；
(6) after priority adjusting module has been shown, namely according to priority adjustment algorithm every time, the priority of each data under individual queue in calculating buffer memory,
(7) performance characteristic record and expense statistical module, duration calculation mail downloading charge according to user's display data is also saved in user's accumulated cost value, then by the click displaying action of user, or postpone displaying action, or refusal displaying action, and action time of origin, pass to performance characteristic record data structure according to action encoded radio and passed to upper transmission module by statistical module after encapsulation。
(8) upper transmission module is when wireless communication connects normal, uploads packet to backstage cloud server。
(9) repeat above step and be circulated displaying。
In sum, the present invention proposes a kind of mobile terminal vehicle operation data communication means, pushes content to car-mounted terminal targetedly by location positioning, improves motility and the value of information sharing, it is achieved whole industry situation develops in a healthy way。
Obviously, it should be appreciated by those skilled in the art, each module of the above-mentioned present invention or each step can realize with general computing system, they can concentrate on single computing system, or being distributed on the network that multiple computing system forms, alternatively, they can realize with the executable program code of computing system, perform it is thus possible to be stored in storage system by computing system。So, the present invention is not restricted to the combination of any specific hardware and software。
It should be appreciated that the above-mentioned detailed description of the invention of the present invention is used only for exemplary illustration or explains principles of the invention, and it is not construed as limiting the invention。Therefore, any amendment of making when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., should be included within protection scope of the present invention。Additionally, claims of the present invention be intended to fall in the equivalents on scope and border or this scope and border whole change and modifications example。
Claims (3)
1. a mobile terminal vehicle operation data communication means, it is characterised in that including:
Cloud server gathers the real-time status data of mobile terminal, by described real-time status data with and the content information of cloud server carry out mating and pushing, user plays the content of propelling movement based on selected content displaying mode。
2. method according to claim 1, it is characterised in that described cloud server gathers the real-time status data of mobile terminal, by described real-time status data with and the content information of cloud server carry out mating and pushing, farther include:
Car-mounted terminal initializes, and sets up data buffer storage and classification queue after starting, and is attached by communication protocol module and backstage cloud server in wireless network connectivity situation, sets up the data channel uploaded and downloaded；
Content information or other types data are pushed in car-mounted terminal by wireless data channel by backstage cloud server, after car-mounted terminal receives, are saved in respectively in queue according to the property value of propelling data in data buffer storage；
In vehicle travel process, car-mounted terminal carries out real-time location according to the location positioning module of self, and coordinate X, Y of each data in data value X, Y of the position plane coordinate obtained and data buffer storage are carried out Euclidean distance calculating。To the data less than distance to a declared goal, it is determined that have Data Matching to current location, then data ready mark is set, and the pointer of data is registered in the ready queue of data buffer storage。Arrive without Data Matching, then repeat above-mentioned location；
When ready queue is not sky, car-mounted terminal first checks for data attribute, if contents attribute data, then Scheduling content controls module and applies control, and if not content-data, then directly scheduled media displaying or audio engine carry out the displaying of data；After having shown, lifetime property according to data is automatically removed and has been completed data message, or preserves back former queue after revising its broadcasting time property value, waits that next time is shown；
After having shown every time, namely according to the priority of each data under individual queue in priority adjustment algorithm calculating buffer memory, duration calculation mail downloading charge according to user's display data is also saved in user's accumulated cost value, then by the click displaying action of user, displaying action, refusal displaying action are postponed, and action time of origin, pass to performance characteristic record data structure according to action encoded radio, after encapsulation, upload packet to backstage cloud server。
3. method according to claim 2, it is characterised in that described user plays the content of propelling movement based on selected content displaying mode, farther includes:
Described content displaying mode includes real-time exhibition, manually displaying, road conditions are shown, described real-time exhibition represents after vehicle location with content-data position calculation, trigger displaying condition and show immediately, after described manual displaying represents that user triggers displaying condition, shown by user's manual key, described road conditions are shown, terminal control add and show content, increase broadcasting time；
In whole displaying control process, first it is the displaying attribute of chosen content information, then extracts content circulation time interval；Then preferentially show power according to what priority adjustment algorithm obtained content information, there is the highest preferential content information showing power and shown at first；For content of multimedia, change one audio frequency of program setting for text audio frequency and play queue；The audio frequency to be played that any time system produces is all inserted into this audio frequency and plays queue, and text audio frequency converse routine extracts audio presentation successively from this queue。
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| CN108600285A (en) * | 2018-01-03 | 2018-09-28 | 陈顺宝 | A kind of information dissemination system based on electric vehicle |
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