CN101222283A - Network radio station system for real-time broadcasting traffic information based on user position - Google Patents
Network radio station system for real-time broadcasting traffic information based on user position Download PDFInfo
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Abstract
The invention relates to a network broadcasting station system for broadcasting traffic information in real time based on user location, which comprises an information release server, a broadcast client, a listen-in client, a control center, a map server and a transmitting gateway; the network broadcasting station system established by the invention needs no person for speech broadcast and completes the network broadcasting station broadcast of real-time traffic information. The broadcasting station system can acquire road condition textual messages in a certain region produced by an intelligent traffic system in real time through the broadcast client; the road condition textual messages are converted to the speech for broadcasting in the broadcasting station. The listen-in client acquires a user geographical position in real time through GPS position technology; through relevant calculations, an accurate network broadcasting station is chosen for listening to the real-time traffic information. When the user geographical position is changed, the system can always select a network broadcasting station in a proper region to provide positive real-time traffic information services for users. The network broadcasting station system can have large-scale terminal access through a strategy of multi-gateway transmission and p2p technology and is an integrated real-time traffic information network broadcasting station.
Description
Technical field
The present invention relates to a kind of network radio station system, belong to the intelligent transport technology field based on the customer location real-time broadcasting traffic information.
Background technology
Along with increasing rapidly of urban population quantity; urban highway traffic situation day is becoming tight; traditional point duty pattern can not be satisfied the demand; intelligent transportation system ITS technology is arisen at the historic moment, and has brought into play huge effect at aspects such as improving road service efficiency, energy savings, protection environment, minimizing traffic congestion, the raising speed of a motor vehicle and reduction traffic accident.But, in traditional intelligent transportation system, transport information is through after gathering, handle, analyzing, mainly provide the Real-time Traffic Information service to onboard navigation system by medias such as FM broadcasting or light marks, after the Internet rises, begin to issue Real-time Traffic Information to the public by the Internet.These published methods all are to obtain the understanding to traffic by operation user interface, eye-observation image for the user.For the user crowds such as driver that driving, can not in time obtain real-time traffic-information service.The defective of traditional ITS delivery system causes the real time traffic data of its generation not to be fully utilized.
On the other hand, though traditional broadcasting station can make people in time obtain transport information by sound by broadcasting traffic information, but exist the shortcoming that efficient is low, cost big, coverage rate is very little, need artificial report and lack specific aim and interactivity, and its shared frequency range is a kind of resource of poorness, and traditional broadcasting station can not be satisfied user's demand far away when broadcasting traffic information.
The development of the poorness of the traditional broadcast resource of frequency range, the fast development of the Internet and universal and stream media technology, for the generation and the development of network radio station provides powerful living space, but the network radio station of Real-time Traffic Information also is not provided at present, and this is because the artificial cost of gathering transport information causes too greatly.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of voice broadcast that need not manually to carry out is provided, can finish the network radio station system based on the customer location real-time broadcasting traffic information of the network radio station report of Real-time Traffic Information.
Technical solution of the present invention: a kind of network radio station system based on the customer location real-time broadcasting traffic information, its characteristics are to comprise: the broadcast client, listen to client, Control Server, map server and forwarding gateway, wherein:
Information delivery server: be used for obtaining the transport information that outside traffic information processing system produces in real time, deliver to the broadcast client;
The broadcast client, this paper transport information that will download from information delivery server is converted into realaudio data, is sent to by the forwarding gateway and listens to client; The broadcast client needs to send order to map server when starting, obtain graph region idly or specify the broadcast right of map area, promptly obtain area information and road condition data metamessage that map server returns, the broadcast client is when starting and withdrawing from, need notice control centre, carry out registration and unregistration;
Listen to client: receive the real-time traffic voice data of transmitting the gateway transmission and carry out this locality broadcast, and obtain the user geographical position in real time by the GPS location technology, and send its positional information to map server, the network radio station title that receives map server simultaneously and calculated, after listening to client acquisition network radio station title, information is sent to Control Server.After Control Server is received information, a forwarding gateway selecting this radio station is sent voice data listen to client, thereby finish the process of automatic channel selection, notify control centre then to this;
Map server: listen to the positional information of client, calculate and describedly listen to the network radio station that client should be selected, and return this and listen to client; Receiving the starting command of broadcast client, is that it distributes a not geographic area of broadcast, i.e. grid, and the broadcast client will be responsible for the broadcast of this regional traffic information;
Transmit gateway: after will duplicating from the audio stream data of broadcast client, under the control of control centre, transmit to listening to client;
Control centre: be responsible for the broadcast client, listen to client, transmit the access of gateway and withdraw from the access information of listening to client and broadcast client of while storage system.
Described control centre comprises Control Server and database, utilize database to come the access information of listening to client and broadcast client of storage system, when listening to client or broadcast client connecting system, Control Server can deposit its configuration information in database, when it logged off, Control Server can be deleted its configuration information from database.
When described when listening to client terminal quantity and reaching scale, transmit gateway and adopt the P2P technology to listen to the data forwarding that client is carried out the P2P mode what the back application added.
When this paper transport information of described broadcast client from the information delivery server download, be converted into voice data, or the artificial transport information of reporting of transmission, and can gather the background music of this machine, the Real-time Traffic Information that comes with information delivery server carries out sending behind the audio mixing, externally distributing traffic information.
The course of work of the present invention:
(1) Control Server in the control centre and database thereof at first start, then map server, information delivery server and transmit gateways and starting, the client terminal start-up of broadcasting afterwards.After these program starts, the function that client provides broadcast can be listened to by system.Map server, information delivery server, forwarding gateway, the client of broadcasting and listen to client and all need to send to start/exit command when starting and withdrawing to notify Control Server are finished registration and the action of nullifying.Control Server is responsible for the information and the state-maintenances such as IP address of these programs.Its all information all is stored in the database, and all Control Servers all can be shared.
(2) information delivery server obtains present dynamic traffic text message by the internal database of timer access traffic information processing system.Information delivery server externally provides a WebService interface, and external program can visit and obtain the real-time traffic text message of appointed area by this WebService interface after input right user name and password.Mainly be that the broadcast client can be visited this WebService interface in the native system.
(3) map server is responsible for shielding the influence of map change to system.The broadcast client can be by communicating the zone and the metadata of this regional traffic information that obtains not broadcast with map server.Listen to client and can obtain the network radio station information that it should be selected to map server by the geographical location information of real-time transmission self.When the city digital map was upgraded, the map that only need change map server insmoded and gets final product.
When (4) transmitting gateways and starting, at first send order and register to Control Server.In running, Control Server can be the lighter forwarding gateway of radio station distribution load according to the loading condition in each radio station.Transmit gateway after the audio data stream of receiving the broadcast client, can check the information list of the radio reception client of local storage, if tabulation is not empty, then audio data stream is duplicated many parts, the client of listening in tabulation is transmitted.Except that directly transmitting the data flow, the forwarding gateway also can use the p2p technology to make and listen to client acquisition voice data.Newly-increased when listening to Client command when what transmit that gateway receives Control Server, transmitting gateway can be directly to transmit or adopt P2P to transmit according to the loading condition decision.
(5) the broadcast client at first sends starting command to map server, obtaining map server is the map area information and the traffic information metadata of its distribution, broadcast to the Control Server application then, and the information such as IP address of its forwarding gateway are distributed in acquisition; The broadcast client is by the WebService interface of visit information publisher server, can read the Real-time Traffic Information of storing in the intelligent transportation system database, utilize the TTS technology to be translated into voice data then, if other audio data sources are arranged, the broadcast client will be carried out audio mixing to multichannel voice frequency, finally form one road voice data.The broadcast client is compressed voice data, and the flow direction of the voice data after will compressing forwarding gateway sends.
(6) listen to after the client terminal start-up, obtain active user's latitude and longitude information by the GPS technology, send its positional information to map server, map server returns this after as calculated and listens to the station information that client should be selected, listen to client with this station information notice Control Server, after receiving, Control Server returns the information such as IP address of the forwarding gateway of this network radio station, and notice forwarding gateway, make it send voice data to listening to client; Listen to client and transmit gateway and send heartbeat message listening to Shi Huixiang,, be responsible for removing the information of this client when transmitting gateway discovery when listening to that client is in heaven dies.When listening to client and stopping to listen to, send and stop to listen to order to transmitting gateway.
The beneficial effect that the present invention compared with prior art has is:
(1) the present invention need not manually to broadcast, and can play the Real-time Traffic Information in certain city, uses systems such as PC or PDA to install after radio station listen to client simultaneously, can carry out listening to of network radio station.Radio station system listen to the geographical position that client can be obtained the user in real time by the GPS technology, and dynamically select correct network radio station to listen to, thereby make the user obtain the transport information of its position in real time, need not both can obtain pointed traffic-information service by trick.Because transport information all adopts the Floating Car system handles to get, therefore transport information of the present invention also has the advantage of with low cost, wide coverage, real-time high-efficiency.
(2) provide the real-time release system of audio frequency mode for intelligent transportation system, make the user only need can understand current traffic information by sound, this mode is than image information mode distributing traffic information advanced person.
(3) the present networks radio station system is converted into voice by the TTS technology with text message, adds other elements such as music by the audio mixing technology, supports to obtain automatically transport information and produces sound automatically, makes the radio station need not artificial broadcast.
(4) the text transport information of radio station system is generated automatically by intelligent transportation system, and this radio station system carries out the report of transport information according to the net region in addition, and the transport information broad covered area in this radio station, real-time height, traffic information are accurate.
(5) this radio station system makes the transmission of voice data can not block because of the disposal ability bottleneck of certain server owing to taked forwarding strategy and P2P technology.Thereby can support to listen on a large scale terminal inserts.
(6) this radio station system when running into the city map replacing, can carry out the upgrading of system owing to be provided with special map server apace.
Description of drawings
Fig. 1 is a structure organization block diagram of the present invention;
Fig. 2 is the interface schema of information delivery server of the present invention and traffic information processing system;
Fig. 3 is a course of work schematic diagram of the present invention;
Fig. 4 is the realization flow figure of map server of the present invention;
Fig. 5 is the reciprocal process schematic diagram of Control Server of the present invention and other parts of system;
Fig. 6 is the reciprocal process schematic diagram of forwarding gateway of the present invention and other parts of system;
Fig. 7 is the operational flow diagram of broadcast client of the present invention;
Fig. 8 is an operational flow diagram of listening to client of the present invention.
Embodiment
As shown in Figure 1, 2, composition structure of the present invention comprises: the broadcast client, listen to client, control centre, map server and forwarding gateway, wherein:
Information delivery server: be used for obtaining in real time the transport information that intelligent transportation system produces, it is the interface routine of native system and treatment system, information delivery server is by regularly inquiring about the database of Floating Car system, generate the transport information text of each sub-district in real time, each client of broadcasting is passed through after this text message file of remote download, externally distributing traffic information.The effect of information delivery server is to obtain the traffic text data of describing traffic information from the information database of intelligent traffic processing system in real time.Information delivery server externally provides the interface of WebService, and its input is database address, user name, password and table name.Output is a plurality of texts that comprise transport information, and each file is represented the transport information of a grid.
Control centre: be responsible for the broadcast client, listen to client, transmit the access of gateway and withdraw from the access information of listening to client and broadcast client of while storage system.Control centre comprises Control Server and database, and Control Server is the software that system starts at first, after Control Server starts, externally sets up TCP and monitors, and accepts the command information from other programs of system.Control Server is in core status in whole system, its effect is to be responsible for the broadcast client, to listen to client and to transmit the access of gateway and withdraw from.Its input is the system command that other system sends over, and its output is the return command that sends to other system.Database comes the access information of listening to client and broadcast client of storage system, when listening to client or broadcast client connecting system, Control Server can deposit its configuration information in database, and when it logged off, Control Server can be deleted its configuration information from database.
Map server: map server is divided into a plurality of grids with city map, shows as a plurality of sub-districts on actual geography, and the foundation of division is: the road chain information that blocks up of the road chain in each sub-district can be finished by a network radio station within 2-10 minute.In system's actual moving process, the corresponding network radio station in each sub-district, the transport information of system was upgraded once in per 5 minutes.Map server is responsible for the formulation of station name and the distribution of region within the jurisdiction, radio station, and is responsible for listening to the positional information of client and calculating the network radio station that it should be selected.The effect of map server in system is screening electron map relevant portion, for other parts of system provide transparent location information service.Its input is the command information that receives other system, and output is the cartographic information that returns according to order.
Transmit gateway: be responsible for the radio station and listen to the voice data that client is transmitted Real-time Traffic Information, and be responsible for detecting that it has jurisdiction over listens to client and whether crash.The client of listening to that forwarding gateway and its are had jurisdiction over constitutes a p2p network, helps system's conserve transmission bandwidth, also makes system can realize the target that mass termination inserts.Radio station system can be transmitted the raising that gateway is realized the system terminal access bearer capability by setting up.The effect of transmitting gateway mainly is to transmit to listening to client after duplicating from the audio stream data of radio station client, when listening to client terminal quantity and reach certain scale, adopt the P2P technology to listen to the data forwarding that client is carried out the P2P mode to what the back application added.The input of transmitting gateway is one road voice data, and output is multi-path audio-frequency data.
Broadcast client: main being responsible for from information delivery server by http agreement download text transport information, and text message is converted into voice data, also can transmit the transport information (as emergency event etc.) of artificial report, and can gather the background music of this machine, carry out sending behind the audio mixing with Real-time Traffic Information.The Data Source of broadcast client has multiple, and its audio mixing as shown in Figure 2.The effect of broadcast client in system is the production audio stream data, and its input is the webservice network address of distributing traffic information, and output is according to the sound of transport information generation and the background music of sneaking into.
Listen to client: gateway is transmitted in reception or other are listened to the real-time traffic voice data of client transmission and carry out this locality broadcast.Wherein, the GPS module can regularly be obtained the user geographical position, and carries out the network radio station that mutual back is selected the user region automatically with map server, thereby provides pointed traffic-information service for the user.Listen to client and do not have input information.Its output is to report sound when the transport information of ground grid.
Traffic information processing system among Fig. 1 does not belong to the part of native system (reporting the network radio station system of Real-time Traffic Information), belong to the third party system that produces the real-time traffic text message, the Real-time Traffic Information system of main flow comes image data by coil or Floating Car at present, afterwards draw the Real-time Traffic Information in city through a series of related algorithms processing, and leave in the database.The network radio station system of reporting Real-time Traffic Information comes compatible different traffic information processing systems by its information delivery server.
As shown in Figure 3, the course of work of the present invention is: Control Server and database thereof at first start, map server and transmit gateways and starting then, both register to Control Server, it again the broadcast client terminal start-up, broadcast to the Control Server application, and the IP address of its forwarding gateway is distributed in acquisition.The broadcast client reads the transport information of storing in the intelligent transportation system database, utilizes TTS (Text-To-Speech) technology to be translated into voice data.If other audio data sources are arranged, as the transport information of artificial report, the broadcast client will be carried out audio mixing to multichannel voice frequency, finally form one road voice data.The broadcast client is compressed voice data, and sends to transmitting gateway.Listen to after the client terminal start-up, obtain active user's longitude and latitude position by LBS or other technologies, send its positional information to map server, map server returns this after as calculated and listens to the radio station that client should be selected.Listen to client its required network radio station of Dynamic Selection in this way, notify Control Server then.After receiving, Control Server returns the IP address of the forwarding gateway of this network radio station, and notice forwarding gateway, make it send voice data to listening to client.After the forwarding gateway was received the order of Control Server, decision was directly to transmit or adopt the P2P forwarding according to loading condition.Listen to client and transmit gateway and send heartbeat message listening to Shi Huixiang,, be responsible for removing the information of this client when transmitting gateway discovery when listening to that client is in heaven dies.When listening to client and stopping to listen to, send and stop to listen to order to transmitting gateway.
As shown in Figure 1, the client of listening among the present invention starts at last, send log-in command to Control Server during startup, send the cancellation order to Control Server when withdrawing from, send request to Control Server in the running and listen to order, send heartbeat message to transmitting gateway, receive voice data from transmitting gateway.Externally set up TCP in the running and monitor, accept command information from other programs of system.
Listening to client presents module by LBS module, P2P module, audio frequency receiver module, audio decompression module, RTP processing module and audio frequency and forms, wherein, the LBS module is responsible for obtaining in real time user's geographical position and the network radio station of selecting the user to listen to by map server by the GPS location technology; The P2P module is responsible for and cooperating that the forwarding gateway carries out that P2P communicates by letter according to the P2P agreement; The network that the audio frequency receiver module is responsible for the UDP message of voice data receives; The RTP processing module is responsible for isolating voice data according to Real-time Transport Protocol from the RTP message; The audio decompression module adopts Speex technology (project of increasing income), is responsible for audio data stream is reduced to original audio data; Audio frequency presents the API of module by the call operation system, is responsible for the broadcast and the attribute of original audio data and regulates.
As shown in Figure 8, the course of work of listening to client among the present invention is as follows: listen to client and receive after the RTP packet by the audio frequency receiver module, the RTP module can be resolved this RTP message, if this message is damaged, then abandon, otherwise see if it is the audio frequency redundancy encoding, if, then it is carried out redundant audio decoder, packets of audio data can be put into audio buffer after decoding finishes sorts according to timestamp, packets of audio data after ordering finishes is decoded into raw audio streams by the audio decompression module, and last raw audio streams is played back by the audio frequency receiver module.
As shown in Figure 1, broadcast client of the present invention starts at Control Server with after transmitting gateways and starting, send log-in command to Control Server during startup, send the cancellation order to Control Server when withdrawing from, send audio-frequency information to transmitting gateway in the running, it is made up of TTS module, audio mixing module, audio compression module, RTP package module, voice data sending module, wherein, the TTS module is responsible for obtaining the traffic text message, and adopt the Text-To-Speech technology of Microsoft, the text transport information is converted to voice messaging; The audio mixing module superposes by voice data, and voice messaging is mixed with the microphone audio or the background music of the collection of this machine; The audio compression module adopts Speex technology (project of increasing income), is responsible for voice data is carried out compressed encoding; The RTP package module encapsulates voice data according to Real-time Transport Protocol; Packets of audio data after the voice data sending module will encapsulate is carried out network according to udp protocol and is sent.
As shown in Figure 7, the course of work of broadcast client of the present invention is as follows: the broadcast client is at first obtained the former data of describing transport information by the WebService interface of visit information publisher server, after former data are analyzed to this, download the real-time traffic text message by http, by the TTS module text message is converted into voice messaging then, the audio mixing module is mixed voice flow and background music or microphone audio stream, the audio compression module is carried out the audio compression coding with audio stream, the RTP module is carried out the encapsulation of RTP message with data afterwards, by the voice data sending module RTP message is sent at last.
As shown in Figure 2, information delivery server among the present invention is by regularly inquiring about the database of traffic information processing system, the road section information that obtains behind whole road section informations same grid carries out cluster, generate the transport information text of each sub-district (grid) in real time, each client of broadcasting serves the XML configuration file of remote download transport information by the Web Service of visit information publisher server, and the broadcast client is by downloading relevant traffic information file by http from information delivery server behind the analyzing XML configuration file.
As shown in Figure 4, the implementation procedure of map server of the present invention is as follows:
(1) be written into map datum, map server generates the topological relation network diagram of all roads of city by reading the city map file in internal memory.
(2) grid is divided, and map server is divided the grid that map carries out n*m, and the number that grid is divided is decided according to the size of city map.The foundation that sizing grid is divided is that the transport information in its grid can be finished within 3～5 minutes.
(3) radio station is distributed, and map server is the corresponding network radio station title of each grid according to the station name configuration file.
(4) radio station is selected, and map server is externally set up the order listening port, realizes with the broadcast client and listens to the mutual of client by message circulation.Inform the grid number of its report during client terminal start-up in broadcast, inform the network radio station title that it should be listened to after client transmits its geographical location information listening to.
As shown in Figure 5, the Control Server among the present invention starts at first, after the Control Server startup, externally sets up TCP and monitors, and accepts the command information from other programs of system, and corresponding order and execution action are as follows:
(1) log-in command: Control Server is received other programs, comprises forwarding gateway, the client of broadcasting, listens to after the log-in command of client, and with the relevant information of program, the database on its backstage is advanced in storage.If the source of order is the broadcast client, Control Server will be searched the free time or have the forwarding gateway that remains transfer capability, notice is transmitted gateway after finding, make it carry out and transmit related work and be returned as the open port of broadcast client, IP and port that Control Server will be transmitted gateway return to the broadcast client.
(2) order is listened in request: after Control Server receives that order is listened in the request of listening to client, and head
Search earlier whether this network radio station is arranged, if no, then return error message, if exist, check then whether this gateway loads full, if full, then select a new forwarding gateway, and send the order of adding the forwarding gateway to the broadcast client, if find a forwarding gateway load full, then notice is transmitted gateway this is listened to the information of client, transmits gateway and finishes after the correlation step, and the relevant information that Control Server will be transmitted gateway again sends to listens to client
(3) nullify order: Control Server is received other programs, comprise transmit gateway, broadcast client,
Listen to after the cancellation order of client,, from the database on its backstage, delete the relevant information of program.
(4) if the source of order is the broadcast client, Control Server takes measures on customs clearance it notification gateway
(5) if the source of order is the forwarding gateway, when it also carries the forwarding task of at least one broadcast client, Control Server will be transmitted gateway from one of new selection for these clients of broadcasting substitute former gateway, and notice broadcast client.
(6) if the order the source for listening to client, Control Server takes measures on customs clearance it notification gateway.
As shown in Figure 6, forwarding gateway among the present invention starts after Control Server starts, send log-in command to Control Server during startup, send the cancellation order to Control Server when withdrawing from, in the running, the udp port of opening to the outside world is listened to the heartbeat message of program, externally sets up TCP and monitors, acceptance is from the command information of other programs of system, and corresponding order and execution action are as follows:
(1) order in interpolation broadcast radio station, when transmitting gateway and monitoring module and receive order from the interpolation radio station of Control Server by order, at first will the broadcast information in radio station of command processing module is put down in writing, a udp port is distributed in the radio station for this reason then, then this port information is returned to Control Server.
(2) heartbeat message, transmitting gateway receives from the heartbeat message of listening to client (because the heartbeat message and the P2P communication information all are the UDP message) by the P2P communication module, if finding certain listens to client and did not send heartbeat message above 3 minutes, it is dead to think that then this listens to client, transmit gateway and will delete the information that this listens to client, and the notice Control Server this listen to client dead (this listens to the cancellation order of client the simulation transmission).
(3) P2P control information, when transmitting the own load of gateway discovery when too much, that after this inserts listens to client and will adopt the reception of P2P technology to listen to the audio data stream of client from other.Control information in the P2P communication is responsible for finishing according to the P2P procotol by the P2P communication module.
(4) audio data stream is transmitted gateway by the audio data stream of voice data receiver module reception from the broadcast client.Audio data stream all is the UDP message.After receiving, adopt the mode of UDP message to transmit by the data multiplex forwarding module to a plurality of clients of listening at once.Thereby realize the broadcasting of the one-to-many of traffic audio-frequency information.
More than be described in detail implementation procedure of the present invention, do not described part in detail and belong to techniques well known.
Claims (10)
1. network radio station system based on the customer location real-time broadcasting traffic information is characterized in that comprising: information delivery server, the client of broadcasting, listen to client, and control centre, map server and forwarding gateway, wherein:
Information delivery server: be used for obtaining the transport information that outside traffic information processing system produces in real time, deliver to the broadcast client;
The broadcast client, this paper transport information that will download from information delivery server is converted into realaudio data, is sent to by the forwarding gateway and listens to client; The broadcast client needs to send order to map server when starting, obtain graph region idly or specify the broadcast right of map area, promptly obtain area information and road condition data metamessage that map server returns, the broadcast client is when starting and withdrawing from, need notice control centre, carry out registration and unregistration;
Listen to client: receive the real-time traffic voice data of transmitting the gateway transmission and carry out this locality broadcast, and obtain the user geographical position in real time by the GPS location technology, and send its positional information to map server, the network radio station title that receives map server simultaneously and calculated, after listening to client acquisition network radio station title, information is sent to Control Server.After Control Server is received information, a forwarding gateway selecting this radio station is sent voice data listen to client, thereby finish the process of automatic channel selection, notify control centre then to this;
Map server: listen to the positional information of client, calculate and describedly listen to the network radio station that client should be selected, and return this and listen to client; Receiving the starting command of broadcast client, is that it distributes a not geographic area of broadcast, i.e. grid, and the broadcast client will be responsible for the broadcast of this regional traffic information;
Transmit gateway: after will duplicating from the audio stream data of broadcast client, under the control of control centre, transmit to listening to client;
Control centre: be responsible for the broadcast client, listen to client, transmit the access of gateway and withdraw from the access information of listening to client and broadcast client of while storage system.
2. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: described control centre comprises Control Server and database, utilize database to come the access information of listening to client and broadcast client of storage system, when listening to client or broadcast client connecting system, Control Server can deposit its configuration information in database, when it logged off, Control Server can be deleted its configuration information from database.
3. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: when described when listening to client terminal quantity and reaching scale, transmit gateway and adopt the P2P technology to listen to the data forwarding that client is carried out the P2P mode what the back application added.
4. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: this paper transport information that described broadcast client is downloaded from information delivery server, be converted into voice data, or the artificial transport information of reporting of transmission, and can gather the background music of this machine, the Real-time Traffic Information that comes with information delivery server carries out sending behind the audio mixing, externally distributing traffic information.
5. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: described broadcast client is made up of TTS module, audio mixing module, audio compression module, RTP package module, voice data sending module, and wherein the TTS module is obtained the traffic text message and the text transport information is converted to voice messaging from the information service distributor and delivers to the audio mixing module; The audio mixing module is mixed voice messaging with the microphone audio or the background music of the collection of this machine, mixed voice data is delivered to the audio compression module; The audio compression module is carried out compressed encoding with voice data; The RTP package module encapsulates voice data after passing through compressed encoding according to Real-time Transport Protocol; Packets of audio data after the voice data sending module will encapsulate is carried out network and is sent.
6. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: the described client of listening to presents module by LBS module, P2P module, audio frequency receiver module, audio decompression module, RTP processing module and audio frequency and forms, the LBS module is obtained user's geographical location information, the network radio station of selecting the user to listen to by map server and Control Server then in real time by the GPS location technology; The P2P module is responsible for and cooperating that the forwarding gateway carries out that P2P communicates by letter; The audio frequency receiver module is delivered to the RTP processing module from the network reception RTP message of voice data; The RTP processing module is responsible for isolating voice data from the RTP message; The audio decompression module is responsible for isolated voice data is reduced to original audio data; Audio frequency presents module regulates the broadcast and the attribute of original audio data.
7. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: described map server by map insmod, grid is divided module, radio station distribution module and radio station select module to form, wherein map insmods and is responsible for when book server starts the city map file being written into, and forms the topological network figure of urban road in program internal memory; Grid is divided module and is responsible for map is divided into a plurality of grids, transport information in each grid can be reported within 3～5 minutes finish; The radio station distribution module is responsible for the corresponding network radio station of each grid according to the station name configuration file; The radio station selects module to be responsible for the broadcast client and to listen to client mutual, tells the grid of its report when the broadcast client terminal start-up, tells the network radio station title that it should be listened to after client transmits its geographical location information listening to.
8. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: described information delivery server is made up of information reading module and WebService module, outside traffic information processing system is after calculating real-time road condition information and depositing the database of himself in, and the information reading module of described information delivery server is by regularly obtaining Real-time Traffic Information and text of describing transport information of corresponding each grid generation from its database; Described information delivery server externally provides a WebService interface, and the broadcast client is obtained the radio station text that it is responsible for the zone by visiting this WebService interface.
9. according to the described network radio station system of claim 2 based on the customer location real-time broadcasting traffic information, it is characterized in that: described Control Server monitors module by order and command processing module is formed, order is monitored module and is responsible for externally setting up listening port, be responsible for filtering the invalid data bag, make the correct communications command that receives from other programs of Control Server, module the calling of meeting trigger command processing module receiving orders after monitored in order; Command processing module is responsible for the order that Control Server receives is handled, when other parts of system when listening to the client connecting system, command processing module is put down in writing its configuration information and is deposited it database of native system in, when other parts log off, command processing module is deleted configuration information from database, externally set up listening port, the access of being responsible for other parts of system with withdraw from, when other parts of system when listening to the client connecting system, Control Server is put down in writing its configuration information and is deposited it database of native system in, when other parts logged off, Control Server was responsible for deletion configuration information from database.
10. the network radio station system based on the customer location real-time broadcasting traffic information according to claim 1, it is characterized in that: described forwarding gateway is monitored module, gateway commands processing module, gateway voice data receiver module, data multiplex forwarding module and gateway P2P communication module by gateway commands and is formed, wherein gateway commands is monitored module and is responsible for externally setting up listening port, be responsible for to filter the invalid data bag, make and transmit gateway and can correctly receive communications command from other programs; Gateway commands is monitored module can trigger calling of gateway commands processing module after receiving orders, the gateway commands processing module is responsible for Control Server, the client of broadcasting and is listened to client and carry out alternately; Gateway voice data receiver module is responsible for receiving the audio data stream from the broadcast client; The data multiplex forwarding module be responsible for audio stream carry out one-to-many to the forwarding of listening to client; The P2P communication module is responsible for communicating with the p2p module of listening to client, when listening to client terminal quantity and reach certain scale, to the forwarding control that client is carried out the P2P strategy of listening to of new access.
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| CN2007101783969A CN101222283B (en) | 2007-11-29 | 2007-11-29 | Network radio station system for real-time broadcasting traffic information based on user position |
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| CN101404548B (en) * | 2008-10-28 | 2010-08-25 | 北京世纪高通科技有限公司 | Traffic information broadcast issuing method, apparatus and system based on intelligent traffic system |
| WO2011079797A1 (en) * | 2009-12-29 | 2011-07-07 | 北京世纪高通科技有限公司 | Dynamic traffic information issuing method and device |
| CN101640573B (en) * | 2008-07-28 | 2011-09-14 | 华为技术有限公司 | Method, device and system for receiving emergency notification |
| CN102281292A (en) * | 2011-07-26 | 2011-12-14 | 北京世纪高通科技有限公司 | traffic information transmission method, device and system |
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