A kind of navigational system based on the shift position serviceTechnical field
A kind of automobile navigation method is used in navigational system, a kind of navigational system based on the shift position service of more specifically saying so.
Background technology
Along with rapid economic development, the road network construction is maked rapid progress, and traffic is also more and more busier crowded.Requirement to the vehicular traffic control system also improves day by day like this.GPS (Global Positioning System) global-positioning technology and GIS (Geographic Information System) GIS-Geographic Information System reach its maturity in the application of civil area, and the various navigation instruments based on GPS and GIS extensively and in large quantities are applied in every field.
Though at traffic transport industries such as logistics, public transport, part is brought into use the GPS navigation appearance, the efficient when its path planning ability has effectively improved vehicle ', general vehicle is in the most of the time of operation, and Surveillance center and its disengaging are got in touch.Surveillance center can't obtain the real time running information and the traffic information of vehicle in time, exactly, is difficult to grasp macroscopical and flexible dispatching.
Summary of the invention
To the regulatory requirement of carriers such as present logistics, public transport to fleet; A kind of navigational system based on the shift position service is proposed at present; Comprise monitor service center and a plurality of client; Said client comprises the navigation module that is used to carry out path planning and navigation at least, be used for the communication module that carries out communication with monitor service center and other clients, and the network that said monitor service center comprises database, the GIS search engine that is used for search database that comprises the GIS cartographic information at least and is used for carrying out with client communication is connected.
Preferably, described client also comprise be used to show paths, system information and the demonstration and the input media that are used for input operation information; Said communication module is based on the GSM network; Said navigation module is used to receive the positional information at client place, when generating navigation way, and the control display device information that shows paths.
Preferably; Described monitor service center comprises server and client service center; Described server comprises: be used to carry out the database that the GIS navigation engine of information retrieval, path planning, road network information inquiry, guidance information planning, the network that is used for carrying out with the client communication network service are connected, comprise the GIS cartographic information and write down the positional information of client; Described client service center comprises according to server requiring invoking server to client positions, service is supported in management and running, navigation etc. contact staff to the monitor message of client and client.
Preferably, a kind of method for tracking and positioning may further comprise the steps:
S1) the client path planning and the navigation that client numbers, upload frequencies are set and are initiated to the destination through navigation module;
S2) client is after the backstage obtains the positional information of self by the upload frequencies of setting with navigation module, sends to the monitor service center with the GPRS communication through communication module to comprise current self positional information, transmitting time, the locating information of client numbers;
S3) server at monitor service center receives locating information, and filing is preserved according to the client numbers in the locating information.
Preferably; Whether client is compared positional information after obtaining the positional information of self with path planning, go off course to judge automobile; If driftage; Client will be sent the driftage alarm to server, and client service center can operate on it control, comprising: stop to navigate, obtaining or be provided with the correlation map central point, extract the positional information of active client, to the client initiating speech conversation.
Preferably, navigation module comprises a position mailbox that is used for the storage location note, and the position information share method of described navigational system may further comprise the steps:
S1) monitor service center or client send or transmit the position note that comprises the POI title, sends number, transmitting time and positional information to the destination client with the form of GSM note;
S2) client is saved in the position note that receives in the mailbox of position;
S3) client will be preserved the position note in the mailbox of position, and the user sorts according to system and thumbs the position note, and the positional information in the note of use location positions and navigates.
Preferably; After the note of client storage position; Content to the position note is discerned; The position note that receives from other clients is shown as " phone number+transmitting time " and ejects demonstration at client screen, and the position note that receives from the monitor service center is shown as " POI title+transmitting time ", and system is according to transmitting time mailbox internal sort demonstration in the position of position note.
Description of drawings
Fig. 1 is the structural representation of shift position of the present invention service navigation system;
Fig. 2 is the process flow diagram of the method for tracking and positioning of navigational system of the present invention;
Fig. 3 is the screenshot capture at mailbox interface, position of the present invention;
Fig. 4 is the screenshot capture that positional information of the present invention ejects.
Embodiment.
Shift position service (Location Based Service; LBS) navigational system is the network (like GSM net, CDMA net) through mobile operator or receives localization method such as gps signal; Obtain the positional information (latitude and longitude coordinates) of portable terminal; At GIS (Geographic Information System; GIS-Geographic Information System) under the support, for the user provides the navigational system of relevant position information on services, in fleet management, immediate care, road is auxiliary and there is very important use meaning in fields such as navigation, asset management, personnel tracking, positioning advertising, mobile yellow pages, the network planning.
This programme is a kind of navigational system based on the shift position service, and system is made up of monitor service center and client, and the monitor service center comprises server and client service center, and system architecture is as shown in Figure 1.
Client is installed onboard, can receive gps signal through navigation module and obtain position and the planning navigation way of self, and can carry out wireless telecommunications through communication module with monitor service center and other clients.
Server can carry out information search and the path planning based on the GIS engine, and can receive and dispatch positional information with client, thereby realizes functions such as monitoring and navigation.Client service center then can be in time, clearly link up with client contacts, thereby realize various supports and navigation feature.
The concrete function of system is following:
Track and localization: as shown in Figure 2; After the client user selects to open this function; Client numbers and upload frequencies are set; Client when driving, the server that positional information that system will be on the backstage obtains navigation module with communication module by preset upload frequencies and client numbers send to the monitor service center in the lump.After server receives, the client numbers filing of positional information by client.Departed from the programme path of navigation module like the driving of client, client will be not programme path again, and send driftage to the monitor service center and report to the police.
One key is called out: the user can be through the key call button on the client screen; Communication module through client is initiated the GSM audio call to client service center; Ask the navigation of appointed place; The monitor service center finds the corresponding number of relevant location information and client on database, send this positional information to client through the mode of wireless network communication at last, and client can directly be initiated navigation after receiving this information through communication module.And the monitor service center can initiatively make a call to client by the needs of navigation, links up, and can comprise the position note of appointed place information to its transmission.
Historical track: client is used the track and localization function that self positional information is sent to the server at monitor service center or is used a key call function and during the communication of monitor service center; Server is preserved filing with these information and is preserved, and client service center can show the historical traffic route of this client and the log at client and monitor service center through these information on screen.
The position mailbox: the position mailbox is to be used to store the storage space with the position note of other clients receptions from the monitor service center in the client.After specifying a position coordinates on the screen, monitor service center or client input destination client number send the position note that comprises the POI title, sends number, transmitting time and positional information to the destination client.The information that the position note comprises comprises: POI title, transmission number, transmitting time and positional information.The destination client will be discerned and be kept in the mailbox of position the content of position note automatically after receiving.In mailbox interface, position, system successively sorts according to the transmitting time of position note.Like Fig. 3, shown in Figure 4, the position note that receives from other clients is shown as " phone number+transmitting time " and when receiving, ejects the reception prompting at screen, and the position note that receives from the monitor service center is shown as " POI title+transmitting time ".The user can thumb the position note according to system ordering, transmits as required, the positional information in deletion and the use location note positions and navigate.