CN103258439B - Intelligent traffic guidance system and method based on three-in-one network - Google Patents
Intelligent traffic guidance system and method based on three-in-one network Download PDFInfo
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Abstract
The invention discloses an intelligent traffic guidance system and method based on a three-in-one network, and relates to the information technology. The intelligent traffic guidance system and method based on the three-in-one network is characterized in that an information center releases comprehensive road condition information through broadcast which can transmit coded messages, wherein a code presents conditions of a road section and the code, and the broadcast describes road condition information in a voice mode; a vehicle-mounted terminal automatically calculates a path which prompts the road condition information according to aims of a user, retrieves and prompts the corresponding comprehensive road condition information mainly through voice; the vehicle-mounted terminal constantly and automatically collects information of the speed and the position of a vehicle and the comprehensive road condition information provided by the user, and automatically feeds all the information back to an information center through a mobile communication mode; the comprehensive road condition used for being released is processed and formed by the information center according to the feedback information; the information center utilizes mobile communication to meet individualized demands of the vehicle-mounted terminal. The intelligent traffic guidance system and method based on the three-in-one network can be widely used for intelligent traffic management.
Description
Technical field
The present invention relates to a kind of intelligent traffic guidance systems, particularly a kind of comprehensive utilization unification of three nets technology be made up of intelligent transportation induction information center and car-mounted terminal realizes the intelligent traffic guidance systems of real-time road condition information issue and feedback function.
Background technology
Traffic congestion is the common problem that each big city, the world faces, and causes great social influence.Traffic congestion major reason is caused to be exactly that driver cannot obtain sufficient real-time road condition information.Drop into the widely used technology with the intelligent transportation inducing function of real-time road prompt facility at present and have the TMC in Europe and the VICS etc. of Japan.But they are providing in real-time road condition information, have certain limitation.
RDS-TMC(Traffic Message Channel) be the function system that the assistant GPS in Europe navigates.To be FM wireless frequency modulation system (RDS) reporting the application of the one in real-time traffic and Weather information to TMC, data message by the onboard wireless receiving terminal or navigator " noiseless " that are equipped with TMC reception and decode, convey to driver in various ways.Implementing traffic information is generally by referring to install vehicle-mounted GPS positioning system and the bus travelled on major urban arterial highway and taxi (becoming " Floating Car ") collection.
VICS(Vehicle Information and Communication System) be a set of application product of Japan at intelligent transportation field, this system covers the information transmission mode of zones of different scope by light beacon, electric wave beacon, FM broadcast etc., by real-time road condition information and guidance information immediately by the prompting mode of word, Simple figure and the map person that conveys to traffic trip, thus make traffic more efficiently convenient.Transport information is gratuitously provided by traffic administration person and road management person (road community etc.).
The primary limitation of these two kinds of technology is as follows:
1, the traffic information provided can not describe fully to road conditions complicated and changeable.Road conditions divide by two kinds of technology has the state of fixing finite number to be described, and the word of description is very simple, and the traffic information thus transmitted can not accomplish real abundant and fullest extent, and user learns full and accurate traffic information thus.
2, information prompting mode is not suitable with the environment for use of user.The traffic information of key reaction jam situation shows by screen, and other information show mainly with pictograph, and make the information of screen numerous and diverse, cause larger interference to user's obtaining information, user needs view screen, drives to cause interference to user.
3, the traffic information request of terminal personalization cannot be replied by information center.Terminal can not make full use of the huge real-time road condition information of information center and powerful processing power.Terminal usually can only passively receive information center issue traffic information.
4, the mode gathering traffic information has limitation.RDS-TMC mainly relies on Floating Car to gather traffic information, but Floating Car can only gather simple road speed and temporal information, can not gather the information of traffic events; VICS can not utilize car-mounted terminal collection, and the road gathering traffic information corresponding is limited in scope.
5, build and operation cost high.With regard to RDS-TMC, early stage needs input cost to be formed " Floating Car " of enough scales; With regard to VICS, its needs more intensive construction than the more massive light beacon of broadcast system and electric wave beacon facility.Also operation cost is needed with upper part.
There is provided the traditional approach of transport information to be Traffic Announcement at present, but Traffic Announcement is difficult to continue to report, during report, user also must continue to listen in order to avoid miss required information.Upgrade slow so Traffic Announcement has and listen to inconvenience, distinct disadvantage that effective information rate is low.
With the immediate prior art Chinese patent application 200910254490.7 " a kind of real-time road condition acquiring, analysis and feedback and intelligent transportation integrated service system " of this paper, this system proposes supporting server and terminal, major function is the TMC information that terminal receives service end issue, the information such as the vehicle heading velocity information gather GPS and navigation programming feed back to service end by mobile communication, and enforcement traffic information is issued by TMC by traffic information that service end processing terminal feedack and alternate manner obtain again.
The limitation of this system is: (1) traffic information is all the form of TMC, with aforementioned, TMC information has the shortcomings such as description is simple, information type is limited, the inconvenience of information prompting mode, not easily expansion, and be not the optimised form of traffic information prompting, practical effect is limited; (2) terminal can only the simplest vehicle location velocity information of automatic feedback, can not feed back the information that complex road condition is concrete more comprehensively, and feedback information is worth limited; (3) system can not realize the response to users ' individualized requirement, is only that center is issued and terminal reception; (4) need with upper frequency collection vehicle azimuthal velocity information, comparatively strong to the dependence of GPS, improve the possibility of error.
Summary of the invention
The present invention is directed to the above-mentioned defect of prior art, design a kind of utilize radio network, mobile communications network, satellite positioning network unification of three nets take masses as the intelligent traffic guidance systems of user.System is with flowing closed loop that is efficient, accurate and the comprehensive road condition information of the Information issued of low cost and feedback system formation comprehensive and abundant, the comprehensive road condition information provided has the ability describing traffic information complicated and changeable, can meet masses' and personalization the traffic information demand of user better.Its major function has, real time comprehensive traffic information is issued to car-mounted terminal in intelligent transportation induction information center (hereinafter referred to as information center), car-mounted terminal arranges automatically retrieve and the comprehensive road condition information pointing out user to need according to customer objective, car-mounted terminal is in real time to the comprehensive road condition information of the automatic continuous or artificial active feedback running section of information center, the traffic information demand of information center to the personalization of car-mounted terminal is replied, the comprehensive road condition information that car-mounted terminal shutdown autostore is up-to-date.
In order to realize above-mentioned functions, the present invention proposes a kind of intelligent traffic guidance systems, comprise: information center and the car-mounted terminal matched, wherein car-mounted terminal comprises: broadcast reception part, mobile communication part, satnav part, transport condition collecting part, central processing portion, storage area, battery compartment, display section, audio output portion, importation, external interface; Information center comprises: Information issued subsystem, information gathering subsystem, information processing subsystem, information storage subsystem, compatibility interface.
The wherein broadcast reception part of car-mounted terminal and the Information issued subsystem of information center, what adopt is broadcast technology with coding transmission function, such broadcast can realize search function, it can be the analog broadcasting that transmitting terminal installs audio coding module additional, receiving end installs audio decoder module additional, or digital broadcasting, data broadcast.
The comprehensive road condition information that car-mounted terminal broadcast reception part real-time reception information center issues; After car-mounted terminal is set up induction destination, central processing portion according to map data base, history road condition data storehouse and user preference database and real time comprehensive traffic information in storage area, automatically calculate lead to destination many feasible paths as the prompting path of comprehensive road condition information; From the comprehensive road condition information received, retrieve the information on prompting path according to the section coding in its coding traffic information, and point out comprehensive road condition information by speech audio mode; In the process of moving, central processing portion continues the vehicle location, real time comprehensive traffic information and the database information that arrange according to destination, satnav part gathers, automatically calculates and adjusts prompting path; Also can pass through mobile communication part, destination and vehicle location are sent to information center, information center utilizes self real time comprehensive traffic information and database information to calculate prompting path and returns to car-mounted terminal again; Simultaneously, judge in every section of road at vehicle place in satnav part, terminal travels state acquisition part or satnav part continuous collecting speed information, the coding traffic information of statistics forming reactions this section of road vehicle passage situation, in manual feedback state, to the oral account of traffic information, recording is carried out to user and form voice traffic information, both are integrated into the comprehensive road condition information of feedback, it is fed back to information center by mobile communication part;
Information center's information processing subsystem comprises: coding traffic information processing module, voice traffic information processing module, other traffic information processing modules, Multi-source Information Fusion module, the comprehensive road condition information of coding traffic information processing module to every section of road of car-mounted terminal automatic feedback processes, and forms the coding traffic information for each section of road issued; The voice traffic information of voice traffic information processing module to every section of road that car-mounted terminal feeds back screens and processes, and forms the voice traffic information of every section of road for issuing; The various traffic informations imported by compatibility interface are screened by other traffic information processing modules, process, replenish the coding traffic information for issuing and voice traffic information; The coding traffic information that coding traffic information processing module, voice traffic information processing module, other traffic information processing module process are formed by Multi-source Information Fusion module and voice traffic information are fused into the comprehensive road condition information for issuing; Information issued subsystem passes through broadcast distribution according to the weighted priority of traffic information importance degree, rise time and road important extent.
The process of information processing subsystem to the comprehensive road condition information of terminal feedback comprises further: the coding traffic information of the every section of road received is got rid of invalid information, effective information is carried out the coding traffic information adding up every section of road that rear formation is used for issuing; The voice traffic information of the every section of road received is carried out audio frequency process, according to standard road conditions descriptive data base, identify that the standard in voice traffic information describes, the correspondence coding standard road conditions identified described adds the coding traffic information issued, and the voice traffic information of every section of road is added the voice traffic information of every section of road for issuing; Coding traffic information and voice traffic information are synthesized the comprehensive road condition information for the every section of road issued;
The mode that car-mounted terminal is formed to information center's feedback integration traffic information can also specifically comprise, car-mounted terminal also utilizes standard road conditions descriptive data base, identify in the voice traffic information of user's oral account of recording the part meeting standard road conditions and describe, standard road conditions are described corresponding coding and be dissolved in the coding traffic information of this feedback; Also add standard road conditions by speech recognition or menu setecting mode to describe, its corresponding coding adds in the coding traffic information of feedback by terminal.
Invention also proposes a kind of intelligent traffic guidance method based on unification of three nets: the comprehensive road condition information that car-mounted terminal broadcast reception part real-time reception information center issues; After car-mounted terminal is set up induction destination, central processing portion is according to map data base, history road condition data storehouse and user preference database in storage area, automatically calculate lead to destination many feasible paths as the prompting path of comprehensive road condition information, from the comprehensive road condition information received, retrieve the information on prompting path according to the section coding in its coding traffic information, and point out comprehensive road condition information by speech audio mode; In the process of moving, satnav part continues to arrange according to current vehicle location and destination, and transport condition collecting part continues automatically to calculate and adjusts prompting path; Meanwhile, terminal travels the state acquisition part continuous collecting speed of a motor vehicle and positional information, carries out recording form voice traffic information in manual feedback state to the oral account of traffic information; Information on prompting path, voice traffic information are fed back to information center by mobile communication part; Information center's information processing subsystem comprises: coding traffic information processing module, voice traffic information processing module, other traffic information processing modules, Multi-source Information Fusion module, the comprehensive road condition information of coding traffic information processing module to every section of road of car-mounted terminal automatic feedback processes, and forms the coding traffic information for each section of road issued; The voice traffic information of voice traffic information processing module to every section of road that car-mounted terminal feeds back screens and processes, and forms the voice traffic information of every section of road for issuing; The various traffic informations imported by compatibility interface are screened by other traffic information processing modules, process, replenish the coding traffic information for issuing and voice traffic information; The coding traffic information that coding traffic information processing module, voice traffic information processing module, other traffic information processing module process are formed by Multi-source Information Fusion module and voice traffic information are fused into the comprehensive road condition information for issuing; Information issued subsystem passes through broadcast distribution according to the weighted priority of traffic information importance degree, rise time and road important extent.
In car-mounted terminal: mobile communication part, for the mutually intercommunication of car-mounted terminal with information center; Satnav part, uses triones navigation system or GPS etc.; Transport condition collecting part, the module of acquisition terminal vehicle speed; Central processing portion, for terminal processes data; Storage area, for store map data storehouse, real time comprehensive road condition data storehouse, prompting voice data storehouse, especially also has experience road condition data storehouse, experience favored pathway database; Importation comprises button, touch-screen and microphone, can comprise the button that bearing circle installs additional especially; External interface, provides external data communication function.
In information center: Information issued subsystem, comprise broadcast transmission platform, mobile communication platform, Information issued compatibility interface.Broadcast transmission platform wherein, sends digitally coded analog broadcasting or digital broadcasting, data broadcast for previously described; Mobile communication platform, adopts the mobile communication module matched with the mobile communication module of car-mounted terminal; Information issued compatibility interface is used for the Information issued of native system to outside system.Information gathering subsystem, for gathering the comprehensive road condition information of car-mounted terminal or other approach feedback, comprises the mobile communication platform and compatibility interface shared with Information issued subsystem.Information processing subsystem, for the information processing of information center's system.Information storage subsystem, pending with treated traffic information for storing information center's system, especially, treated traffic information can no longer retain after distribution.Compatibility interface, for carrying out information interaction with the source of other intelligent transportation related systems or other various traffic informations.
The present invention utilizes the unification of three nets technology of radio network, mobile communications network and satellite positioning network.Broadcast technology, for the comprehensive road condition information of information center to the point-to-area issue masses of each car-mounted terminal; Satnav part, for determining the position of terminal vehicle, and can obtain car speed; Mobile communication part, transmits the guidance informations such as personalized comprehensive road condition information for information center to terminal is point-to-point, also feeds back comprehensive road condition information that is that automatically gather and user's manual feedback for terminal to information center.Comprehensive road condition information is the perfect information of the description road conditions based on voice.So-called road conditions perfect information, refers to the traffic information that fully can meet the individual demand of user under certain state.Comprehensive road condition information is broadcast message, is made up of coding traffic information and voice traffic information.Coding traffic information describes road number, the priority of comprehensive road condition information and the correspondence coding of standard road conditions description represented by one section of comprehensive road condition information; Voice traffic information describes the concrete road conditions of Comprehensive.Terminal plays voice traffic information after receiving comprehensive road condition information, and coding traffic information is converted into voice, or is aided with pictograph prompting.Based on voice traffic information, coding traffic information be the description needs that auxiliary comprehensive road condition information can meet traffic information complicated and changeable.
The comprehensive road condition information that car-mounted terminal broadcast reception part real-time reception information center issues; Car-mounted terminal be set up induction destination after, database, history road condition data storehouse and user preference database etc. according to the map, automatically calculate lead to destination many feasible paths as the prompting path of comprehensive road condition information; From the comprehensive road condition information received, retrieve the information on prompting path according to the section coding in its coding traffic information, and mainly through voice mode prompting comprehensive road condition information; In the process of moving, terminal continues to arrange according to current vehicle location and destination, continues automatically to calculate and adjusts prompting path; Simultaneously, the terminal continuous collecting speed of a motor vehicle and positional information, when user selects manual feedback function, the oral account of user's finding traffic information is recorded, above two parts are formed after treatment the comprehensive road condition information of feedback, feed back to information center by mobile communication; The comprehensive road condition information that information center feeds back according to great amount of terminals, screening statistical treatment goes out the comprehensive road condition information for issuing, and passes through broadcast distribution according to the urgent importance degree of traffic information and the priority of rise time.
Major function and the implementation of native system are as follows.
Car-mounted terminal is retrieved according to user's request and is pointed out comprehensive road condition information.User arranges destination, terminal obtains current vehicle position by satnav part, database, history road condition data storehouse and user preference database etc. according to the map, automatically many feasible paths calculating arrival destination, as the prompting path of comprehensive road condition information, just recalculate once when vehicle sails new road in the process of moving.Or, customer objective ground and current vehicle position to be divided by mobile division and are sent to information center by terminal, by information center according to its database, calculate prompting path, by mobile communication part, prompting path is sent to terminal again, just again calculated once by information center when vehicle sails new road in the process of moving.User can revise at any time or manually path is pointed out in setting.In the process of moving, terminal utilizes broadcast reception part to receive the comprehensive road condition information of information center's issue, according to the road number in coding traffic information, retrieve the comprehensive road condition information on prompting path, prompting order is determined according to the priority in time of reception and coding traffic information, by the voice traffic information in audible prompting comprehensive road condition information, coding traffic information is converted into corresponding standard traffic information, then be main, image or word by voice is that auxiliary mode is pointed out.
Car-mounted terminal is in real time to the comprehensive road condition information of the automatic continuous or artificial active feedback running section of information center: judge place road by global position system, in this section, sustainable utilization transport condition collecting part obtains the speed of a motor vehicle, by intelligent transportation related algorithm, count running time and the speed of vehicle pass-through this section of road; User run into as block up or the road conditions event of burst that accident etc. is concrete time, select manual feedback function, terminal is recorded about the oral account of finding road conditions to user, and carries out the audio frequency process such as noise reduction compression, identifies that standard road conditions wherein describe and change into corresponding coding traffic information; Form the comprehensive road condition information of feedback after the process of terminal above two parts information integration, feed back to information center by mobile communication.
Information center gathers, generate and issue real-time comprehensive road condition information to car-mounted terminal: the standard road conditions descriptive data base pre-establishing all kinds of road conditions, each standard road conditions describe a corresponding coding.Information center gathers the comprehensive road condition information of each car-mounted terminal feedback, count average transit time and the speed of road according to intelligent transportation related algorithm according to the running time of each terminal feedback of every section of road and speed, be translated into coding traffic information; According to standard road conditions descriptive data base, the standard road conditions in voice traffic information are wherein described and is converted into corresponding coding, join in the coding traffic information in the comprehensive road condition information of issue; The coding traffic information and voice traffic information that are used for issuing is supplemented after the traffic information category filter process obtained by other approach.The coding traffic information processed by every section of road and voice traffic information merge, form the comprehensive road condition information of every section of road being used for broadcast distribution, pass through broadcast distribution according to the weighted priority of traffic information importance degree, rise time and road important extent.Described urgent importance degree, refers in standard traffic information describes, different road conditions and the pre-set priority of traffic events; Road important extent refers to the weighting rank of the severity level of every section of road by presetting and the importance degree according to every section of road of history traffic information statistics.
The traffic information demand of information center to the personalization of car-mounted terminal is replied: terminal gathers the demand of user by the mode such as speech recognition or menu setecting, as the comprehensive road condition information of some road with to the shortest path of destination or the fastest path, by mobile communications network, demand is sent to information center, information center utilizes the real time comprehensive traffic information resource of self and powerful computing power, user's request is processed, result is sent it back terminal, and result is main, image by voice by terminal is that auxiliary mode points out user.
The comprehensive road condition information that car-mounted terminal shutdown autostore is up-to-date: after terminal closedown, still continuous reception comprehensive road condition information, and store comprehensive road condition information up-to-date on every section of road, to ensure just can point out up-to-date comprehensive road condition information at once when starting up of terminal.
Comprehensive road condition information is the integration of coded message and voice messaging, has perfect information concept, can the road conditions of tool ground volume description complexity comprehensively.Comprehensive road condition information meets popular with needs that are personalization simultaneously.Terminal feedback voice traffic information, contains much information concrete more comprehensively, enhances quality and the validity of the comprehensive road condition information of issue.The comprehensive road condition information of broadcast distribution is popular, and the information that mobile communication is transmitted according to terminal request is personalized, and both combinations can better be met consumers' demand.The use of car-mounted terminal is friendly and easy.Comprehensive road condition information is by voice message, and user can be issued to good reception not disperseing the situation of too many notice; Terminal continues automatically to revise prompting path, and prompting process whole-process automatic.System low cost.System can utilize case of conventional analog broadcast to install the transformation of corresponding codec additional and form, and the construction cost of system is low; Mass information utilizes broadcast distribution, utilizes again car-mounted terminal to complete information acquisition and feedback, system operation cost and customer using cost low.Utilize the unification of three nets technology of radio network, radio communication, GPS network network.Define the closed loop of the Capture and publish of complete comprehensive road condition information, utilize its features side by side to meet the masses of user and the demand of personalized comprehensive road condition information easily.Unification of three nets makes system automatically can realize three networks independently function reach better synergy.
Accompanying drawing explanation
Fig. 1 is car-mounted terminal structural drawing;
Fig. 2 is intelligent transportation induction information centre junction composition;
Fig. 3 is for retrieving as required and pointing out real time comprehensive traffic information process flow diagram;
Fig. 4 is the coding traffic information process flow diagram that terminal automatic feedback gathers;
The process flow diagram of the comprehensive road condition information that Fig. 5 provides for terminal feedback user.
Embodiment
For accompanying drawing and instantiation, enforcement of the present invention is more specifically described below.
For convenience of describing, at this, some concepts are described.Described " one section of road " is the road unit that comprehensive road condition information describes." coding traffic information " is the coded message of the description road conditions of broadcast delivery, at least comprises section coding and road conditions coding; Which section road section coding described by traffic information is for expressing; The concise and to the point road conditions of road conditions coding for reflecting this section of road, pre-establish the standard descriptive data base of all kinds of traffic information, standard describes a corresponding coding, and formulating method is National Standard of the People's Republic of China GB/T20612.1-2006 " traffic and Traveler Information (TTI) are through the TTI message part 1 of traffic message coding: radio data system-traffic message channel (RDS-TMC) coding protocol of use ALERT-C " such as." voice traffic information ", being the traffic information of passage situation, traffic hazard, traffic problems etc. concrete on reflection one section of road, is broadcast audio form." comprehensive road condition information ", refers to the fusion of coding traffic information and voice traffic information; One section of comprehensive road condition information comprises section coding, and one or both in road conditions coding and voice messaging.
Be illustrated in figure 1 intelligent traffic guidance systems car-mounted terminal structural drawing of the present invention.Car-mounted terminal comprises: broadcast reception part, mobile communication part, satnav part, transport condition collecting part, central processing portion, storage area, battery compartment, display section, audio output portion, importation, external interface.
Broadcast reception part, for the comprehensive road condition information that real-time automatic reception information center issues, employing can transfer encoding and then realize the broadcast technology of search function, can be the analog broadcasting receiver module installing audio decoder module additional, or digital broadcasting, data broadcast reception module etc.
Mobile communication part, for the mutually intercommunication of car-mounted terminal with information center, namely to the comprehensive road condition information etc. of information center's constant feedback vehicle running section.
Satnav part, for locating the vehicle carrying terminal, to support real time comprehensive road conditions feedback function, is one or more in triones navigation system, GPS or other navigational system.
Transport condition collecting part, for the transport condition of collection vehicle to support the comprehensive road condition information feedback function of car-mounted terminal, it hardware comprising vehicle speed sensor or receive the speed information that car-mounted terminal mounting vehicle has gathered.
Central processing portion is the process core of car-mounted terminal.The information that central processing department divisional processing gathers automatically forms the coding traffic information of one section of road; Process artificial feedack, then integrate the coding traffic information of this section of road, form voice traffic information.
Storage area, the information for car-mounted terminal stores, and it comprises map data base, real time comprehensive road condition data storehouse, experience road condition data storehouse, experience favored pathway database, information database and other databases.
Battery compartment, for as power supply when not having an externally fed.
Display section, for showing the man-machine interaction of car-mounted terminal, being display device, as LCD screen, or having video output interface.
Audio output portion, for the various audio prompts of car-mounted terminal, it comprises loudspeaker or has audio output interface.
Importation, for the control signal allowing user input car-mounted terminal, it can comprise touch-screen, button, microphone, bearing circle button etc.Wherein button mainly refers to the button in machine body, and bearing circle button refers to install on the steering wheel for the button of the easy control of invention Core Feature.
External interface, carries out other data communication for car-mounted terminal, is one or several of USB interface, SD card interface etc.
Battery compartment, for not connecting power supply during vehicle power, or connects vehicle power but in vehicle closedown situation, maintains the power supply of system cloud gray model.
Wherein, broadcast reception part, mobile communication part, satnav part, transport condition collecting part, storage area, battery compartment, display section, audio output portion, importation, external interface connect central processing portion respectively and have data communication with it.
Broadcast reception part comprises the improvement analog broadcasting module of information code demoder and analog broadcasting receiver composition; Satnav part comprises triones navigation system; Transport condition collecting part comprises the vehicle speed sensor be installed on terminal vehicle; Importation comprises touch-screen, button, microphone, bearing circle button, and wherein button mainly refers to the button in machine body, and bearing circle button refers to install on the steering wheel for the button of the easy control of function.
Fig. 2 is intelligent transportation induction information centre junction composition.Information center comprises Information issued subsystem, information gathering subsystem, information processing subsystem, information storage subsystem, compatibility interface composition, wherein:
Information issued subsystem, for issuing real time comprehensive traffic information in the mode of efficient and low cost to car-mounted terminal, it comprises broadcast transmission platform, mobile communication platform, Information issued compatibility interface.Broadcast transmission platform, applying the broadcast technology corresponding with car-mounted terminal broadcast reception module, can be the analog broadcasting installing audio coding module additional, or digital broadcasting, data broadcast; Mobile communication platform, adopts mobile communication technology corresponding to the mobile communication module of car-mounted terminal; The alternate manner that Information issued compatibility interface exports in order to the compatible real time comprehensive traffic information as guideboard.
Information gathering subsystem, the mobile communication platform that information gathering subsystem comprises information acquisition compatibility interface and shares with Information issued subsystem.For gathering the comprehensive road condition information of car-mounted terminal to the vehicle running section of information center's constant feedback, it comprises mobile communication platform, compatibility interface.Mobile communication platform is the same communications platform shared with Information issued subsystem, the traffic information that compatibility interface is fed back for receiving other road conditions information gathering mode.
Information processing subsystem, information processing subsystem comprises coding traffic information processing module, voice traffic information processing module, other traffic information processing modules, Multi-source Information Fusion module; Information issued subsystem comprises improvement analog broadcasting flat pad, Information issued compatibility interface mobile communication platform.For information center's process information work, it mainly comprises coding traffic information processing module, voice traffic information processing module, other traffic information processing module, Multi-source Information Fusion modules etc.Coding traffic information processing module, for screening and statistical treatment the coding traffic information of car-mounted terminal automatic feedback, the road conditions simultaneously extracting standard from the voice traffic information of terminal feedback describe, and convert corresponding coding to, form real-time coding traffic information; Voice traffic information processing module, for screening and processing the voice traffic information of car-mounted terminal via manual feedback, forms real-time voice traffic information; Other traffic information processing modules, for screening the various traffic informations imported by compatibility interface and being treated to the message form that this patent supports, by effective information process coding traffic information and voice traffic information wherein; Multi-source Information Fusion module, the traffic information for coding traffic information processing module, voice traffic information processing module, other traffic information processing module process being formed is fused into can for the comprehensive road condition information issued.
Information storage subsystem, information storage subsystem comprises comprehensive road condition information database, standard road conditions descriptive data base, map data base 12.For storing the various information of information center, it comprises comprehensive road condition information database, standard road conditions descriptive data base, map data base etc.Comprehensive road condition information database, for the comprehensive road condition information that stores processor is to be released; Standard road conditions descriptive data base, for road conditions descriptor and the corresponding coding of storage standards.
Compatibility interface, for connecting the source of other intelligent transportation related systems or other various traffic informations, to realize them to supports such as the information sharings of native system.
Car-mounted terminal of the present invention is used for realizing following functions: retrieve as required and point out real time comprehensive traffic information (referred to as " road condition advisory "), the coding traffic information of terminal automatic feedback collection, comprehensive road condition information (referred to as " user feedback ") that terminal feedback user provides, user's query, shutdown time comprehensive road condition information autostore.
(1) retrieve as required and point out real-time comprehensive road condition information:
In user's driving procedure, terminal points out user to drive towards the comprehensive road condition information of the introductory path of destination in time.Car-mounted terminal is retrieved according to user's request and is pointed out comprehensive road condition information: user arranges destination, terminal obtains current vehicle position by satnav part, database, history road condition data storehouse and user preference database etc. according to the map, automatically many feasible paths calculating arrival destination, as the prompting path of comprehensive road condition information, just recalculate once when vehicle sails new road in the process of moving.Or, customer objective ground and current vehicle position to be divided by mobile division and are sent to information center by terminal, by information center according to its database, calculate prompting path, by mobile communication part, prompting path is sent to terminal again, just again calculated once by information center when vehicle sails new road in the process of moving.User can revise at any time or manually path is pointed out in setting.In the process of moving, terminal utilizes broadcast reception part to receive the comprehensive road condition information of information center's issue, according to road number wherein, retrieve the traffic information on prompting path, by the voice traffic information in broadcast mode prompting comprehensive road condition information, coding traffic information is converted into voice, image or Word message prompting.After judging that terminal vehicle arrives destination, point out this induction to terminate, the statistics of prompting induction, and upgrade the information of experience road condition data storehouse and experience favored pathway database.
The algorithm that terminal or information center calculate prompting path can be: by the length of the known every section of road of map data base; By the expectation transit time under the current road conditions of the known every section of road of comprehensive road condition database, by the known every section of road in experience road condition data storehouse at this moment between the experience transit time of scope; The number of times of every section of road is selected by the known user of experience favored pathway database; The length of every section of road and event numerical value are weighted, every section of road obtains weights; With the shortest Weighted Shortest Path Problem footpath algorithm, when ensure routine weight value and minimum make user select number of times sum maximum, select weights and minimum and number of times and maximum path for prompting path.Car-mounted terminal continues automatic reception and stores all comprehensive road condition information, but only retains the up-to-date comprehensive road condition information of every section of road, and coding traffic information and the up-to-date of voice traffic information are respective.
The coding of road according to comprehensive road condition information expression information, car-mounted terminal retrieves the information on prompting path according to the current destination of user and routing from the real time comprehensive traffic information of automatic reception, if terminal is accepting the information pointing out road on path, storage limit, limit is reported.The prompting mode of comprehensive road condition information is: the prompting order of different traffic information is determined by factors such as the time order and function of traffic information importance degree, reception and the distances of road and current vehicle position, and wherein importance degree refers to the quantitatively evaluating that information center carries out the importance of information when forming comprehensive road condition information.
Such as: voice traffic information has the importance degree higher than common traffic information; Change larger common traffic information and compare the little common traffic information of change by higher importance degree; The information of emergency has the highest importance degree, to make terminal directly point out user after this information of reception.The map of terminal screen is pointed out out the section of current report comprehensive road condition information, user now can carry out the relevant setting operation in this section, such as from prompting path, removes this road until this road recovers unimpeded.
Composition graphs 3, car-mounted terminal realizes retrieving as required and pointing out the flow process of the function of real time comprehensive traffic information as follows.
1, car-mounted terminal receives at any time and stores so comprehensive road condition information.
2, the new destination of terminal wait is arranged by user.
3, new destination is arranged by user.
4, car-mounted terminal take current vehicle location as starting point, and destination is terminal, calculates prompting path.Or vehicle location and destination are sent to information center, receive information center calculate prompting path.
5, display reminding path on the map of terminal screen.
6, user revises or manually arranges prompting path.
7, terminal from real-time reception with store up-to-date comprehensive road condition information encode according to section, retrieve the information of the road on prompting path, the prompting order of many comprehensive road condition information is determined according to factors such as the distances of the importance degree of information, the time order and function of reception and road and current vehicle position, in order based on audio frequency, image is auxiliary prompting, and the road of report is pointed out in variable color flicker on the map of terminal screen.
8, by satnav, terminal judges that vehicle sails one section of new road into.
9, section, vehicle place is compared with section, destination by terminal, arrive destination? no, forward 4 to; Forward 10 to.
10, terminal points out this induction to terminate to user, the statistics of prompting induction.
11, with the comprehensive road condition information received empirically road conditions Sample Refreshment experience road condition data storehouse, the section crossed with vehicle upgrades the information of experience favored pathway database.
(2) when the coding traffic information terminal vehicle of terminal automatic feedback collection travels on road, a terminal automatic collection vehicle information such as position and speed, cross every section, then vehicle is travelled position when just crossing road and velocity information is added up, the coding traffic information of reaction of formation terminal vehicle pass-through situation on this road, goes back to information center as a sample back.
Especially, terminal is by transport condition collecting part acquisition terminal vehicle speed, can calculate operating range and the position of vehicle on road thus, thus terminal does not need satnav can use always, only needs to sail into and front and back the satnav that runs off the roadway can be used.If satnav can be used more time, then can improve the precision of final coding traffic information statistics.
Composition graphs 4, the process flow diagram that car-mounted terminal realizes the function of the coding traffic information that automatic feedback gathers is as follows.
The idiographic flow that terminal realizes this function is as follows:
1, by satnav, terminal judges that vehicle enters one section of new road.
2, terminal starts the coding traffic information statistics of new road.
3, terminal is by transport condition collecting part, continuous acquisition terminal vehicle speed information; When satnav is available, then obtain vehicle position information with certain frequency.
4, the information of vehicles that gathered by satnav of terminal, does vehicle sail out of this section? no, forward 3 to; Forward 5 to.
5, terminal terminates this road information collection, the position that statistics gatherer arrives and velocity information, forms coding traffic information.
6, the coding traffic information of this section of road is fed back to information center by mobile communication by terminal.Forward 1 to.
(3) comprehensive road condition information that provides of terminal feedback user
Run into block up, the traffic events such as accident, road maintenance time, the traffic information that user can obtain to its sense organ mode of information center's manual feedback mainly through voice mode, word picture by event each side situation feeds back to information center, thus obtain obtaining the right of the up-to-date comprehensive road condition information of this section of road in the very first time from information center, namely after the heart generates the up-to-date comprehensive road condition information of this section of road in the information, with mobile communication point-to-point to this station terminal send information.When using this function, user gives an oral account traffic information to terminal, terminal gathers user speech, carry out as noise reduction, voice give prominence to, after the simple audio frequency process such as compression as the voice traffic information fed back, and in conjunction with the coding traffic information of place road that terminal gathers, feed back to information center by mobile communication in the lump.Information center artificially can evaluate feedback information, evaluates the aspects such as ageing and quality, and by result feedback to terminal.If it is valuable to evaluate feedback information, then terminal can the up-to-date real-time road condition information in this section of wait-receiving mode.In addition, car-mounted terminal can also utilize the standard road conditions descriptive data base carried, and is identified in user speech the part meeting standard road conditions and describe by speech recognition, standard road conditions is described corresponding coding and is dissolved in the coding traffic information of this feedback.Terminal also supports that user manually adds standard road conditions by speech recognition or menu setecting mode and describes, and its corresponding coding can add in the coding traffic information of this feedback by terminal.
Composition graphs 5, the flow process that car-mounted terminal realizes the function of the comprehensive road condition information that terminal feedback user provides is as follows.
1, " user feedback " function is easily selected by a user.
2, terminal starts recording.
3, " user feedback " terminated by user, terminal terminate recording.
4, the voice traffic information of terminal to the user feedback gathered carries out audio frequency process, and criterion of identification traffic information is also converted to corresponding coding.Meanwhile, by satnav determination vehicle location, add up and generate the coding traffic information of terminal vehicle reaction passage situation so far in section, place.
Voice traffic information and all coding traffic informations of the user feedback 5, it pre-treatment formed are integrated into feedback comprehensive road condition information.
6, feedback comprehensive road condition information is sent to information center by mobile communication by terminal.
7, terminal receives the evaluation information to this comprehensive road condition information that information center sends.
8, terminal points out this evaluation information to user.
9, whether to show comprehensive road condition information valuable for evaluation information.Be.Forward 10 to; No, terminate.
10, terminal wait receives the comprehensive road condition information of this road by mobile communication, until judge that vehicle sails out of this road.
(4) user's query
The real-time road condition information resource utilizing information center huge and powerful processing power meet the demand of its personalization.In some cases, user wishes the up-to-date real time comprehensive road conditions learning place road immediately, or wants the time calculating destination, the end according to up-to-date real-time road, etc. problem, can this function be passed through, utilize the communication of terminal and information center to realize.
Terminal gathers user's request by the mode such as speech recognition or menu setecting, as the comprehensive road condition information of some road with to the shortest path of destination or the fastest path, by mobile communication, demand is sent to information center, after the individual demand of information center to user processes, the result of response is sent it back terminal, terminal provides corresponding prompting.
(5) autostore of comprehensive road condition information when shutting down
After terminal closedown, still continuous reception comprehensive road condition information, and they are all stored, every section of road only retains up-to-date comprehensive road condition information.The prompting of real-time up-to-date comprehensive road condition information just can be obtained immediately after such user starts shooting.
For realizing object of the present invention, by aforesaid structure, coordinate the function of car-mounted terminal, described intelligent transportation induction information center has following functions, receives and the inquiry request forming real time comprehensive traffic information, issue real time comprehensive traffic information, respond car-mounted terminal.
The implementation of various functions is as follows.
(1) receive and form real time comprehensive traffic information:
A large amount of coding traffic information of information center's real-time reception car-mounted terminal feedback and voice traffic information, and the way information that other approach obtain.The coding traffic information of the every section of road received is got rid of invalid information (such as, by the statistics of numerous sample, find that individual vehicle travel speed is extremely slow, then judge that it is the stop vehicle of non-traffic congestion, its feedback information is invalid), effective information is carried out the coding traffic information adding up every section of road that rear formation is used for issuing; The voice traffic information of the every section of road received is carried out audio frequency process, as noise reduction, voice is outstanding and decompress, and screen, according to standard road conditions descriptive data base, described by the standard in speech recognition identification voice traffic information, if do not recognize the standard reacting traffic information to describe, abandon this voice traffic information, the correspondence coding standard road conditions identified described adds the coding traffic information issued, by the carrying out of every section of road the voice traffic information after audio optimization process add the voice traffic information of every section of road for issuing; Coding traffic information and voice traffic information is replenished after the traffic information category filter process obtained by other approach.The coding traffic information processed by every section of road and voice traffic information merge, and form the comprehensive road condition information of the every section of road being used for broadcast distribution.
(2) real time comprehensive traffic information is issued
Information center, by the real time comprehensive traffic information of each section of road of formation, is issued by broadcast mode.Wherein publishing policy considers the factors such as the importance of the urgent importance of comprehensive road condition information, real-time and prompting road.
The algorithm of existing intelligent transportation gives multiple publishing policy, here only for a kind of method below.
Information center designs a circulation publishing queue, and every section of road successively arrangement wherein, every section of road plays up-to-date comprehensive road condition information with respective frequency cycle.There are particularly urgent or important comprehensive road condition information, can promptly intercut or change its position in queue.Information center adjusts its position in queue according to the general status of the comprehensive road condition information of the history of each section of road.
Every section of road is marked to issue priority according to comprehensive road condition information historical data, and this scoring is scoring 1, and high priority of marking is high.One day is divided into by the hour 24 periods, in each period, according to historical data, the section priority that congestion is more serious is higher.According to priority, every section of road arranges a threshold value, and the threshold value that priority is high is little, and the change only having traffic information of ought encoding to compare last time exceedes this threshold value and just issues this comprehensive road condition information; As long as and have new voice traffic information, this comprehensive road condition information will be issued.
The up-to-date comprehensive road condition information of every section of road process formed is marked, and this scoring is scoring 2, and high priority of marking is high.Scoring 2 is coding traffic information and the two-part scoring weighted sum of voice traffic information.It is higher that coding traffic information compares last change this part scoring larger, and the larger scoring of the urgent importance degree of content of voice traffic information is higher.The final scoring of every section of road synthetic traffic information is the priority scoring 1 of road and scoring 2 weighted sum of current composite traffic information.From high to low comprehensive road condition information is added in publishing queue according to final scoring.Scoring 2 is recorded in every section of road conditions historical data simultaneously, the priority scoring 1 of every section of road is revised.
(3) inquiry of car-mounted terminal is responded
Information center receives the inquiry of car-mounted terminal by mobile communication.According to difference inquiry, by intelligent transportation related algorithm, utilize a large amount of traffic information of information center database and powerful computing power, utilize stronger algorithm, process out result, feed back to car-mounted terminal by mobile communication.
Below the function that car-mounted terminal of the present invention and information center realize is sketched with user's use angle.User selects " road condition advisory " function when driving to start, and arranges destination, many prompting paths on terminal screen map.User can revise or manually arrange prompting path at any time.Listen to the up-to-date comprehensive road condition information that terminal reports road on prompting path, user understands according to these information and goes to the comprehensive road condition of destination introductory path, comprises the passage rate of each road, congestion, which road have details of traffic hazard and traffic hazard etc.Prompting path on terminal screen automatically can be made and adjusting with the path adapting to vehicle current driving accordingly.When user faces traffic events, as traffic congestion or traffic hazard, want the concrete condition understanding traffic events faster, " user feedback " function can be selected, describe the situation of the traffic events oneself understood at the scene.If this feedback information is assessed as valuable by information center, terminal just can the very first time automatically receive this road upgrade comprehensive road condition information.User also can select " user's query " function, then terminal can receive the up-to-date comprehensive road condition information of this road current.When user arrives destination, terminal can point out this summary of inducing.
(1) those skilled in the art should recognize, above embodiment is only used for the present invention is described, but not the restriction to technical solution of the present invention, the realization flow details of the system architecture in above embodiment, the detailed design of function, major function etc. are not unique.As long as in spirit of the present invention, change, the modification of above-described embodiment all will drop in the scope of claim of the present invention.
Claims (8)
1. the intelligent traffic guidance systems based on unification of three nets, comprise, car-mounted terminal and information center, it is characterized in that, wherein car-mounted terminal comprises: broadcast reception part, mobile communication part, satnav part, transport condition collecting part, central processing portion, storage area, display section, audio output portion; Information center comprises: Information issued subsystem, information gathering subsystem, information processing subsystem, information storage subsystem, compatibility interface;
The wherein broadcast reception part of car-mounted terminal and the Information issued subsystem of information center, adopts the broadcast technology of coding transmission function, realizes broadcast retrieval;
The comprehensive road condition information that car-mounted terminal broadcast reception part real-time reception information center issues; After car-mounted terminal is set up induction destination, central processing portion according to map data base, history road condition data storehouse and user preference database and real time comprehensive traffic information in storage area, automatically calculate lead to destination many feasible paths as the prompting path of comprehensive road condition information; From the comprehensive road condition information received, retrieve the information on prompting path according to the section coding in its coding traffic information, and point out comprehensive road condition information by speech audio mode; In the process of moving, central processing portion continues the vehicle location, real time comprehensive traffic information and the database information that arrange according to destination, satnav part gathers, automatic calculating also adjusts prompting path, or by mobile communication part, destination and vehicle location are sent to information center, and information center calculates prompting path and returns to car-mounted terminal; Simultaneously, judge in every section of road at vehicle place in satnav part, terminal travels state acquisition part or satnav part continuous collecting speed information, the coding traffic information of statistics forming reactions this section of road vehicle passage situation, in manual feedback state, to the oral account of traffic information, recording is carried out to user and form voice traffic information, coding traffic information and voice traffic information are integrated into the comprehensive road condition information of feedback, it is fed back to information center by mobile communication part;
Information center's information processing subsystem comprises: coding traffic information processing module, voice traffic information processing module, other traffic information processing modules, Multi-source Information Fusion module, the comprehensive road condition information of coding traffic information processing module to every section of road of car-mounted terminal automatic feedback processes, and forms the coding traffic information for each section of road issued; The voice traffic information of voice traffic information processing module to every section of road that car-mounted terminal feeds back screens and processes, and forms the voice traffic information of every section of road for issuing; The traffic information imported by compatibility interface is screened by other traffic information processing modules, process, replenishes the coding traffic information for issuing and voice traffic information; The coding traffic information that coding traffic information processing module, voice traffic information processing module, other traffic information processing module process are formed by Multi-source Information Fusion module and voice traffic information are fused into the comprehensive road condition information for issuing; Information issued subsystem passes through broadcast distribution according to the weighted priority of traffic information importance degree, rise time and road important extent.
2. intelligent traffic guidance systems according to claim 1, it is characterized in that, the broadcast reception part of car-mounted terminal and the Information issued subsystem of information center are the analog broadcasting that transmitting terminal installs audio coding module additional, receiving end installs audio decoder module additional, or digital broadcasting, data broadcast.
3. intelligent traffic guidance systems according to claim 1, it is characterized in that, the process of information processing subsystem to the comprehensive road condition information of terminal feedback comprises further: the coding traffic information of the every section of road received is got rid of invalid information, effective information is carried out the coding traffic information adding up every section of road that rear formation is used for issuing; The voice traffic information of the every section of road received is carried out audio frequency process, according to standard road conditions descriptive data base, identify that the standard in voice traffic information describes, the correspondence coding standard road conditions identified described adds the coding traffic information issued, and the voice traffic information of every section of road is added the voice traffic information of every section of road for issuing; Coding traffic information and voice traffic information are synthesized the comprehensive road condition information for the every section of road issued.
4. intelligent traffic guidance systems according to claim 1, it is characterized in that, the mode that car-mounted terminal is formed to information center's feedback integration traffic information also comprises, car-mounted terminal utilizes standard road conditions descriptive data base, identify in the voice traffic information of user's oral account of recording the part meeting standard road conditions and describe, standard road conditions are described corresponding coding and be dissolved in the coding traffic information of this feedback; Add standard road conditions by speech recognition or menu setecting mode to describe, its corresponding coding adds in the coding traffic information of feedback by terminal.
5. intelligent traffic guidance systems according to claim 1, it is characterized in that, the mode of car-mounted terminal prompting comprehensive road condition information comprises further, according to the coding of the urgent importance degree of expression traffic information in comprehensive road condition information, and receive the time of each bar comprehensive road condition information, determine the prompting order of comprehensive road condition information; Wherein voice traffic information is directly play by audio frequency, and coding traffic information passes through voice broadcast after being converted into the description of corresponding standard traffic information.
6. based on an intelligent traffic guidance method for unification of three nets, it is characterized in that, the comprehensive road condition information that car-mounted terminal broadcast reception part real-time reception information center issues; After car-mounted terminal is set up induction destination, central processing portion according to map data base, history road condition data storehouse and user preference database and real time comprehensive traffic information in storage area, automatically calculate lead to destination many feasible paths as the prompting path of comprehensive road condition information; From the comprehensive road condition information received, retrieve the information on prompting path according to the section coding in its coding traffic information, and point out comprehensive road condition information by speech audio mode; In the process of moving, central processing portion continues the vehicle location, real time comprehensive traffic information and the database information that arrange according to destination, satnav part gathers, automatic calculating also adjusts prompting path, or by mobile communication part, destination and vehicle location are sent to information center, and information center calculates prompting path and returns to car-mounted terminal again; Simultaneously, judge in every section of road at vehicle place in satnav part, terminal travels state acquisition part or satnav part continuous collecting speed information, the coding traffic information of statistics forming reactions this section of road vehicle passage situation, in manual feedback state, to the oral account of traffic information, recording is carried out to user and form voice traffic information, coding traffic information, voice traffic information are integrated into the comprehensive road condition information fed back, it is fed back to information center by mobile communication part;
In information center's information processing subsystem, the comprehensive road condition information of coding traffic information processing module to every section of road of car-mounted terminal automatic feedback processes, and forms the coding traffic information for each section of road issued; The voice traffic information of voice traffic information processing module to every section of road that car-mounted terminal feeds back screens and processes, and forms the voice traffic information of every section of road for issuing; The traffic information imported by compatibility interface is screened by other traffic information processing modules, process, replenishes the coding traffic information for issuing and voice traffic information; The coding traffic information that coding traffic information processing module, voice traffic information processing module, other traffic information processing module process are formed by Multi-source Information Fusion module and voice traffic information are fused into the comprehensive road condition information for issuing; Information issued subsystem passes through broadcast distribution according to the weighted priority of traffic information importance degree, rise time and road important extent.
7. intelligent traffic guidance method according to claim 6, it is characterized in that, the process of information processing subsystem to the comprehensive road condition information of terminal feedback comprises further: the coding traffic information of the every section of road received is got rid of invalid information, effective information is carried out the coding traffic information adding up every section of road that rear formation is used for issuing; The voice traffic information of the every section of road received is carried out audio frequency process, according to standard road conditions descriptive data base, identify that the standard in voice traffic information describes, the correspondence coding standard road conditions identified described adds the coding traffic information issued, and the voice traffic information of every section of road is added the voice traffic information of every section of road for issuing; Coding traffic information and voice traffic information are synthesized the comprehensive road condition information for the every section of road issued.
8. intelligent traffic guidance method according to claim 6, it is characterized in that, the mode that car-mounted terminal is formed to information center's feedback integration traffic information also specifically comprises, car-mounted terminal also utilizes standard road conditions descriptive data base, identify in the voice traffic information of user's oral account of recording the part meeting standard road conditions and describe, standard road conditions are described corresponding coding and be dissolved in the coding traffic information of this feedback; Add standard road conditions by speech recognition or menu setecting mode to describe, its corresponding coding adds in the coding traffic information of feedback by terminal.
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