CN102854491A - Method and system for carrying out positioning on the basis of Bluetooth technology - Google Patents
Method and system for carrying out positioning on the basis of Bluetooth technology Download PDFInfo
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Abstract
The invention discloses a method and a system for carrying out positioning on the basis of the Bluetooth technology. The method includes the following steps: Bluetooth access points broadcast own access point information, including ID (identity) information and coordinate information; on the basis of received signal strength RSSI, a mobile terminal sequences the surrounding Bluetooth access points according to the broadcast information of the Bluetooth access points; the mobile terminal transmits the chosen Bluetooth access point, the access point information and the sequence information to an application server; on the basis of the information of the Bluetooth access point, the sequence information and the access point information, the application server locates the position of the mobile terminal, and transmits positioning information to the mobile terminal; and the mobile terminal receives the positioning information, and displays the current positional information on the basis of a configured electronic map. After the invention is put into practice, indoor mobile terminals can be positioned by means of the Bluetooth technology, and therefore the defects of the GPS (global positioning system) and other satellite positioning systems, such as inaccurate indoor positioning, can be effectively overcome.
Description
Technical field
The present invention relates to the bluetooth field of locating technology, be specifically related to a kind of method and system that realize the location based on Bluetooth technology.
Background technology
At present, there are the dipper system of the GPS of the U.S., Muscovite glonass system, China and the Galileo in Europe in the outdoor positioning system.Have the advantages such as wide coverage, user's access amount be large at outdoor employing satnav.Yet when the user enters into indoor the time, the bearing accuracy of these positioning systems just sharply descends.Mainly be because of the impact of indoor obstruct on signal.So, in order to solve the problem of indoor positioning, derived multiple indoor positioning system and method.
Existing localization method is the method that adopts the infrared indoor location, and it comprises the positioning treatment apparatus that infrared transmitter that two infrared reception bars that a plurality of infrared remote receivers form, four timesharing send infrared detection signals is electrically connected with infrared remote receiver.
Utilize infrared as indoor positioning, at first existing portable terminal to adopt the considerably less of infrared communication, particularly mobile phone terminal, almost do not have mobile phone terminal to adopt infrared communication; So it is unpractical adopting infrared location in portable terminal.Adopt the limitation of infrared location to be infrared short distance and infrared linear transmission; When infrared when having object to block its locating effect be not fine, and when processing a plurality of mobile object; Also differ greatly according to its performance of the location algorithm that adopts; In addition, the local locating device that the method adopts is a kind of device of curing, thus can not accomplish multiple localization method choose and upgrade, change etc.
Summary of the invention
The present invention proposes a kind of indoor locating system based on bluetooth and method, can utilize the Bluetooth communication mode to provide precisely real-time indoor positioning for portable terminals such as mobile phones.
In order to realize goal of the invention, the invention discloses a kind of method that realizes the location based on Bluetooth technology, described method comprises:
Bluetooth accessing point broadcasting self access-in point information comprises id information and coordinate information;
Portable terminal is finished the ordering of Bluetooth accessing point on every side based on received signal strength RSSI according to the Bluetooth accessing point broadcast message;
Portable terminal sends to application server with Bluetooth accessing point, access-in point information and the sequencing information of choosing;
Application server is finished based on Bluetooth accessing point information, sequencing information and access-in point information the position of portable terminal is located, and locating information is sent to portable terminal;
Portable terminal receives locating information, and shows current positional information based on the electronic chart of configuration.
Described portable terminal is based on the information interaction between XML (extensible Markup Language)-remote procedure call XML-RPC agreement realization and the application server.
The location, position that described application server is finished portable terminal based on Bluetooth accessing point information, sequencing information and access-in point information comprises:
Utilize the method for range of triangle to realize the position of portable terminal is located.
Accordingly, the embodiment of the invention also provides a kind of system that realizes the location based on Bluetooth technology, and described system comprises
A plurality of Bluetooth accessing points are used for the broadcasting self information, comprise id information and coordinate information;
Portable terminal, be used for obtaining the broadcast message of Bluetooth accessing point on every side, and finish the ordering of Bluetooth accessing point on every side according to received signal strength RSSI, the object information that ordering is relevant sends to application server, and receive application server and finish position location information to portable terminal according to the object information of ordering, and show current positional information based on the electronic chart of configuration;
Application server, the object information that is used for being correlated with according to sorting is finished the position location Calculation to portable terminal, and the position location information that clears out is sent to portable terminal.
Realize communicating by letter by the XML-RPC agreement between described portable terminal and the application server.
The method of utilizing range of triangle that comprises described application server realizes the location, position to portable terminal.
The present invention has the following advantages: the location of carrying out the indoor moving terminal by Bluetooth technology can be good at supplying the global position systems such as GPS in problems such as indoor positioning out of true; Bluetooth generally all has been furnished with in the portable terminals such as mobile phone, so need to not carry out too much terminal development; Native system is placed into location Calculation in the server and carries out, advantage is to select different location algorithms to calculate, provide convenience for follow-up system upgrade, and in server, position than solving at each indoor arrangement and location device cost, sustainability upgrading and convenient management can also provide the application of other more high-rise position-based services simultaneously in the server.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the system architecture schematic diagram based on Bluetooth technology realization location in the embodiment of the invention;
Fig. 2 is based on the system logic structure schematic diagram under Fig. 1;
Fig. 3 is the application server structural representation in the embodiment of the invention;
Fig. 4 is the method flow diagram based on Bluetooth technology realization location in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
The indoor locating system that the present invention is based on Bluetooth technology comprises portable terminal, Bluetooth accessing point AP (Access Point) and application server three parts.Be illustrated in figure 1 as the deployment schematic diagram of system.What need in the system to locate is portable terminal, disposes a plurality of Bluetooth accessing points, for example 3 or more in indoor environment.Bluetooth accessing point is connected connection by wired or wireless mode with server.Application server is the ingredient of storage map and calculating location.
The logical organization of system has comprised the client on the portable terminal, middleware, application server, network and database server etc. as shown in Figure 2.Client mainly refers to the application program of the portable terminals such as mobile phone.In portable terminal, must have and process the RSSI(received signal strength that sends from Bluetooth accessing point, Received Signal Strength) client application of information, this client application can be customization but must to satisfy a bit be exactly to possess the web access ability.Middleware mainly is the data-transformation facility of being responsible between the client and server, in order better to realize the transparent transmission between the client and server, can consider existing XML-RPC agreement; The characteristics of this agreement are exactly the mode that adopts HTTP to the pack encapsulation and sending of XML file, provide network communication services and can firewall-penetrating for each species diversity system simultaneously.Be network connection between application server and the database server, this mainly is with the layout of using and data are carried out decoupling zero, and reality can be at same server in the physics deployment, and is independently in logic.Server comprises two parts, DBMS storage and applied logic.The data storage mainly is for the storage map, and map comprises location position and the strong and weak map of signal of Bluetooth accessing point.Use and adopt a kind of concurrent, distributed and high fault-tolerant design, mainly comprise three large modules: Data access module, location-server module and XML-RPC service module.
In the application server of in Fig. 2, mentioning, comprise three modules: Data access module, location Calculation module and XML-RPC service module.Their structure with related as shown in Figure 3.Data access module mainly be responsible for and database between data manipulation relevant, comprise the definition of access interface and the definition of accessing operation etc., can adopt the mode of DAO (directly access object, Direct Access Object); The location Calculation module is to calculate the residing position of existing portable terminal according to the located in connection algorithm after the data that adopt in the database, and the inside can encapsulate many algorithms, the upgrading algorithm that can continue, and upgrading is convenient in such system; The XML-RPC service module is the module of responsible and client communication, and its adopts Facade(skin mode) design, so that the internal structure of outside application server does not need too much understanding, simplified system interface.Logic flow between the application server parts is specific as follows:
Step1: Data access module is utilized DAO definition data access.When server is received the request of client, at first need the information such as map in the database are conducted interviews and to extract by Data access module; Turn Step2;
Step2: utilize the data selection location algorithm and carry out position calculation.From database, extract after the data data retransmission to the location computing module, this module package multiple location algorithm available, can select a kind of more accurately or the algorithm that more can adapt to scene carry out the calculating of position; Turn Step3;
Step3: utilize the XML-RPC pattern to provide service for client.The result that this step will calculate returns to client, with the communicating by letter of client in, adopting this one deck of XML-RPC mainly is to be convenient to cross-platform and to simplify communication interface.
Adopt positioning flow step that Bluetooth technology carries out indoor positioning as shown in Figure 4, specific as follows:
S401: Bluetooth accessing point AP broadcasts self information, comprises ID, coordinate;
S402: after portable terminal received a certain amount of bluetooth access information, according to RSSI information, signal intensity was come Bluetooth accessing point AP is sorted, and several AP that portable terminal is chosen the RSSI maximum calculate the positional information of self;
S403: the portable terminal mobile phone A p information such as mobile phone, sort, choose;
S404: RSSI information between the AP that will and choose adopts the XML-RPC agreement to send to application server, and this step need to be passed through Bluetooth accessing point, then by Bluetooth accessing point with data upload to server;
S405: the XML-RPC service module of server is resolved the data of sending, because the HTTP that transmission is adopted, and the form of data is XML forms, so have cross-platform and advantage firewall-penetrating;
S406: Data access module conducts interviews to database by modes such as DAO, extracts the relevant informations such as RSSI data map; Then push information to the location Calculation module
S407: in locating module, choose the calculating that a kind of method for calculating and locating carries out the position, for example the range of triangle method;
S408: return result of calculation, adopt the encapsulation of XML form to utilize the HTTP transmission, namely by XML-RPC the result is returned to portable terminal;
S409: portable terminal obtains the positional information of oneself, and this part is carried out in client software, and client software can configure the offline e map, and then mark comes from own position on this map.
The main Bluetooth accessing point broadcasting of the present invention self access-in point information comprises id information and coordinate information; Portable terminal is finished the ordering of Bluetooth accessing point on every side based on received signal strength RSSI according to the Bluetooth accessing point broadcast message; Portable terminal sends to application server with Bluetooth accessing point, access-in point information and the sequencing information of choosing; Application server is finished based on Bluetooth accessing point information, sequencing information and access-in point information the position of portable terminal is located, and locating information is sent to portable terminal; Portable terminal receives locating information, and shows current positional information based on the electronic chart of configuration.
The present invention has the following advantages: the location of carrying out the indoor moving terminal by Bluetooth technology can be good at supplying the global position systems such as GPS in problems such as indoor positioning out of true; Bluetooth generally all has been furnished with in the portable terminals such as mobile phone, so need to not carry out too much terminal development; Native system is placed into location Calculation in the server and carries out, advantage is to select different location algorithms to calculate, provide convenience for follow-up system upgrade, and in server, position than solving at each indoor arrangement and location device cost, sustainability upgrading and convenient management can also provide the application of other more high-rise position-based services simultaneously in the server.
Abovely a kind ofly realize that based on Bluetooth technology the method and system of location are described in detail to provided by the present invention, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a method that realizes the location based on Bluetooth technology is characterized in that, described method comprises:
Bluetooth accessing point broadcasting self access-in point information comprises id information and coordinate information;
Portable terminal is finished the ordering of Bluetooth accessing point on every side based on received signal strength RSS I according to the Bluetooth accessing point broadcast message;
Portable terminal sends to application server with Bluetooth accessing point, access-in point information and the sequencing information of choosing;
Application server is finished based on Bluetooth accessing point information, sequencing information and access-in point information the position of portable terminal is located, and locating information is sent to portable terminal;
Portable terminal receives locating information, and shows current positional information based on the electronic chart of configuration.
2. the method that realizes the location based on Bluetooth technology as claimed in claim 1 is characterized in that, described portable terminal is based on the information interaction between XML (extensible Markup Language)-remote procedure call XML-RPC agreement realization and the application server.
3. the method that realizes the location based on Bluetooth technology as claimed in claim 1 is characterized in that, the location, position that described application server is finished portable terminal based on Bluetooth accessing point information, sequencing information and access-in point information comprises:
Utilize the method for range of triangle to realize the position of portable terminal is located.
4. a system that realizes the location based on Bluetooth technology is characterized in that, described system comprises
A plurality of Bluetooth accessing points are used for the broadcasting self information, comprise id information and coordinate information;
Portable terminal, be used for obtaining the broadcast message of Bluetooth accessing point on every side, and finish the ordering of Bluetooth accessing point on every side according to received signal strength RSSI, the object information that ordering is relevant sends to application server, and receive application server and finish position location information to portable terminal according to the object information of ordering, and show current positional information based on the electronic chart of configuration;
Application server, the object information that is used for being correlated with according to sorting is finished the position location Calculation to portable terminal, and the position location information that clears out is sent to portable terminal.
5. the system that realizes the location based on Bluetooth technology as claimed in claim 4 is characterized in that, communicates by letter by the realization of XML-RPC agreement between described portable terminal and the application server.
6. the system that realizes the location based on Bluetooth technology as claimed in claim 5 is characterized in that, described application server comprises that the method for utilizing range of triangle realizes the location, position to portable terminal.
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