CN103024896A - System, method and device for wireless location - Google Patents
System, method and device for wireless location Download PDFInfo
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- CN103024896A CN103024896A CN2011102851283A CN201110285128A CN103024896A CN 103024896 A CN103024896 A CN 103024896A CN 2011102851283 A CN2011102851283 A CN 2011102851283A CN 201110285128 A CN201110285128 A CN 201110285128A CN 103024896 A CN103024896 A CN 103024896A
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Abstract
The invention discloses a system, a method and a device for wireless location. A system comprises the structure that when an access point base station transmits a signal intensity value needed for location via a service set identifier group value, location information of the base station is written in a name domain of the service set identifier group value and is transmitted to a location tag; and after the location tag judges that the received service set identifier group value is valid, the position of the tag is calculated according to the corresponding location information of the access point base station and the corresponding signal intensity value. The system and the method for locating the location tag are reformed by re-researching wireless location standards, thus solving a plurality of problems in realization of wireless location, such as reading missing phenomenon avoiding, system location stability ensuring, location efficiency improving, network resource saving, complex operation avoiding, single location mode of location software, and the like.
Description
Technical field
The present invention relates to location technology, relate in particular to system, method and the positioning label device of wireless location.
Background technology
As shown in Figure 1, be the structure of service set identifier (SSID, the Service Set Identifier) class value that sends of access point (AP, the Access Point) base station of location.In location technology, each producer uses positioning label to return to upper service end system after the AP base station gets access to signal value the ssid class value, by software the validity of signal value is judged, and effective signal value processed and calculate, according to the peak signal value of from all signal values of receiving, choosing positioning label is positioned.Such locate mode can cause following problems.
Because positioning label needs power saving, so usually send to service end system immediately behind the signal value in getting access to the ssid class value, then close tag system and enter into sleep (sleep) pattern, regularly wait for sending for the second time the required data group (ssid class value) in location.Such operation can cause the phenomenon of positioning label skip ssid class value.
The software of upper service end comprises the algorithm that signal value is processed and calculated and judges that layer by layer a large amount of data of processing have consumed computer resource in real time.Also this can be understood as the software function that will could realize with the computer of configuration superior performance service end, and this software need take very large spatial cache in the process of operation.That is to say that computer (server) wants omnibearing raising configuration just can finish the software function of above-mentioned service end.
Have, positioning label does not carry out any data screening to the data group of returning, but effective, invalid data are transmitted in the lump, can take very large Internet resources thus again.
Variety of issue so that the position stability of navigation system can't guarantee that overall system resources consumption is larger, thereby has caused the rising of hardware construction cost in sum.
In the produce market of wireless location, no matter be zigbee navigation system or present state-of-the-art wifi navigation system, all be faced with same problem, but all can't effectively address these problems.Because technological difficulties are too many, a lot of enterprises can only solve the problem of part.For example, have plenty of in order to solve the problem of accurate positioning, shutdown system at once not after the required signal value in label passback location, but the service end software of waiting system passback affirmation value, inform whether these group data are effective, such as label shutdown system effectively then, just send again data such as invalid label.So repeatedly.Although can guarantee like this fluency of navigation system and avoid positioning label skip ssid class value phenomenon, the resource of having lost Internet resources, label electric weight and server.Again for example, have plenty of in order to solve the effective problem of positioning label skip and signal value, set up two base stations a position.And two base stations or the locating information of a plurality of base stations all will be uploaded reception sometimes, after these information exchanges are crossed and are uploaded reception, software will judge which data is the most effective to it, judges that namely which signal value in the ssid class value is the strongest, and which is just got.Mode of operation has just reduced the probability of skip like this, but can not guarantee that the ssid class value of at every turn uploading can both be effective, has increased thus the work load of software; And increase the base station and just mean capital consumption, so that system cost and cost are raised.
Therefore, need to be improved existing wireless location method, formulate the method for the new wireless location of a cover, with the stability that solves how assurance system location, save Internet resources, avoid the skip phenomenon and reach absolutely effective problems of the data uploaded.
At present on the market positioning software mainly is the track route according to map and required label, all will draw all track routes on map, relies on known path going for the strong basis station of signal, demonstrates label at map and moves effect.Such operation causes following problem occurring:
The first, if the environment of a more complicated, the Path selection setting-out is cumbersome, and operation is very loaded down with trivial details, and the maintenance of software is larger, when there is change in the zone, need to reset route.
Such as the mine location in each tunnel, is constantly to excavate constantly to extend, and that is to say that localizing environment is constantly changing, as realizing that according to above said method the work of the maintenance change of its software is just larger.
The second, the real-time of location is bad.Owing to the form of drawing at software, judge direction of travel and the path of label, just must know starting point (supposing the A point) data, if label has removed the B point and has read signal value that B orders for the strongest, judge that by software label has moved to the B point, just begin to demonstrate walking process from A to B at software like this, that is to say when software demonstrates this walking process, in fact on-the-spot label has arrived the B point, will produce like this problem that time-delay lags behind.
Positioning software on the market mainly is to orientate the master as with single-point, seldom having three kinds of algorithms can accomplishing single-point location, two point locations and three-point fix to combine uses simultaneously, therefore locate mode is single, thereby causes location efficiency low and positional accuracy is poor.
Summary of the invention
Technical problem to be solved by this invention provides a kind of system, method and device of wireless location, can avoid the generation of positioning label skip phenomenon, and the stability that guarantees.
In order to solve the problems of the technologies described above, the invention provides a kind of system of wireless location, comprise access point base station and positioning label, wherein:
Access point base station is used for will locate when required signal strength values transmits by the service set identifier class value, the locating information of this base station is written in the title-domain of this service set identifier class value and is transferred to positioning label;
After positioning label, the service set identifier class value that is used for receiving are judged as effectively, according to the locating information of corresponding access point base station and the position of signal strength values calculating book label.
Preferably, access point base station comprises interconnective information coding module and first information transport module, wherein:
The information coding module is used for the locating information of this base station is encoded into pointing character, and exports to information transmission modular; The initial point that the locating information of this base station comprises setting is the rectangular coordinate of this definite base station of benchmark, the zone at this place, base station, the area size in zone, type and the align_type that segmented is measured; Segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of positioning label areal survey access point base station standard; Align_type comprises any one in three-point fix, two point locations and the single-point location;
First information transport module is used for the pointing character of input is written in the title-domain of service set identifier class value, and the signal strength values of this base station is written in the signal codomain of described service set identifier class value, is transferred to simultaneously positioning label.
Preferably, segmented is measured the standard signal intensity level that namely divides three sections to measure access point base station;
The type that the segmented of information coding module coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
Preferably, positioning label comprises the second information transmission modular, information decoding processing module and the location Calculation module that connects successively, wherein:
The second information transmission modular is used for the service set identifier class value information that receives from access point base station is judged, and will be judged as effective service set identifier class value and export to the information decoding processing module;
The information decoding processing module, be used for the locating information that pointing character from the title-domain of the service set identifier of input is decoded into corresponding access point base station, and export to together the location Calculation module with the signal strength values that the signal codomain from this service set identifier class value parses;
The location Calculation module is used for according to the locating information of the access point base station of inputting and the position of this label of signal strength values calculative determination.
Preferably, type, align_type and the described signal strength values measured according to the segmented of knowing described access point base station of location Calculation module carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is the single-point location; Judge the interval of the residing standard signal intensity of signal strength values, and calculate the distance of this positioning label and access point base station according to the type that segmented is measured, judge then whether positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculates the straight path between this positioning label and corresponding two access point base station, then calculates the position of positioning label reality between described two access point base station;
The third knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that described three access point base station form respectively according to this label.
Preferably,
The location Calculation module is judged and the align_type priority of processing is followed successively by: three-point fix, two point locations and single-point location.
Preferably, this system also comprises the background service end, wherein:
Zone and/or the current residing position coordinates of this label at this label place that the location Calculation module will calculate are exported to the second information transmission modular;
The second information transmission modular is uploaded to the background service end with the information of this label of location Calculation module output;
The background service end, the target that will carry positioning label for the information of uploading according to the second information transmission modular is presented at map interface.
In order to solve the problems of the technologies described above, the invention provides a kind of access point base station equipment of realizing wireless location, it is characterized in that, comprise interconnective information coding module and information transmission modular, wherein:
The information coding module is used for the locating information of this base station is encoded into pointing character, and exports to information transmission modular;
Information transmission modular is used for the pointing character of input is written in the title-domain of service set identifier class value, and the signal strength values of this base station is written in the signal codomain of service set identifier class value, is transferred to simultaneously positioning label.
Preferably,
The locating information of described this base station of information coding module coding comprises: take the initial point set as the rectangular coordinate of this base station that benchmark is determined, the zone at this place, base station, the area size in zone, type and the align_type that segmented is measured; Segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of positioning label areal survey access point base station standard; Align_type comprises any one in three-point fix, two point locations and the single-point location.
Preferably, segmented is measured the standard signal intensity level that namely divides three sections to measure access point base station;
The type that the segmented of information coding module coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
In order to solve the problems of the technologies described above, the invention provides a kind of positioning label device of realizing wireless location, comprise the information transmission modular, information decoding processing module and the location Calculation module that connect successively, wherein:
Information transmission modular is used for the service set identifier class value information that receives from access point base station is judged, and will be judged as effective service set identifier class value and export to the information decoding processing module;
The information decoding processing module, be used for the locating information that pointing character from the title-domain of the service set identifier of input is decoded into corresponding access point base station, and export to together the location Calculation module with the signal strength values that the signal codomain from this service set identifier class value parses;
The location Calculation module is used for according to the locating information of the access point base station of inputting and the position of this label of signal strength values calculative determination.
Preferably, type, align_type and the signal strength values measured according to the segmented of knowing access point base station of location Calculation module carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is the single-point location; Judge the interval of the residing standard signal intensity of signal strength values, and calculate the distance of this positioning label and access point base station according to the type that segmented is measured, judge then whether positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculates the straight path between this positioning label and corresponding two access point base station, then calculates the position of positioning label reality between described two access point base station;
The third knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that three access point base station form respectively according to this label.
Preferably, the align_type priority of the judgement of location Calculation module and processing is followed successively by: three-point fix, two point locations and single-point location.
Preferably,
Zone and/or the current residing position coordinates of this label at this label place that the location Calculation module also will calculate are exported to information transmission modular;
Information transmission modular is uploaded to the background service end with the information of this label of location Calculation module output.
In order to solve the problems of the technologies described above, the invention provides a kind of method of wireless location, relate to access point base station and positioning label, comprising:
Access point base station will located required signal strength values by in the service set identifier class value transmission, the locating information of this base station will be written in the title-domain of this service set identifier class value and be transferred to positioning label;
After positioning label is judged as the service set identifier class value that receives effectively, according to the locating information of corresponding access point base station and the position of described signal strength values calculating book label.
Preferably, access point base station is written to the locating information of this base station in the title-domain of this service set identifier class value and is transferred to positioning label, specifically comprises:
Access point base station is encoded into pointing character with the locating information of this base station, and is written in the title-domain of service set identifier class value and is transferred to positioning label; The initial point that the locating information of this base station comprises setting is that rectangular coordinate, the zone at place, the area size in zone, the segmented of this definite base station of benchmark measured type and align_type; Segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of positioning label areal survey access point base station standard; Align_type comprises any one in three-point fix, two point locations and the single-point location.
Preferably,
The type that the segmented of access point base station coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
Preferably, positioning label specifically comprises according to the locating information of corresponding access point base station and the position of signal strength values calculating book label:
The pointing character that receives on the title-domain is decoded into the locating information of corresponding access point base station;
Measure type and effective signal strength values according to the segmented of access point base station, judge the residing standard signal intensity interval of this signal strength values;
Calculate the distance of this label and access point base station according to the align_type of access point base station.
Preferably, positioning label is followed successively by according to the align_type priority of align_type processing: three-point fix, two point locations and single-point location; Type, align_type and the signal strength values of measuring according to the segmented of access point base station carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is the single-point location; Judge the interval of the residing standard signal intensity of signal strength values, and calculate the distance of this positioning label and access point base station according to the type that segmented is measured, judge then whether positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculates the straight path between this positioning label and corresponding two access point base station, then calculates the position of positioning label reality between two access point base station;
The third knows that according to the locating information of access point base station the type that the segmented of access point base station is measured is the first kind or Second Type or the 3rd type, and align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that described three access point base station form respectively according to this label.
Preferably, the method also relates to the service end on backstage, and the method also comprises:
The zone at this label place that positioning label will calculate and the current residing position coordinates of this label are uploaded to the background service end;
The target that the information that the background service end is uploaded according to positioning label will be carried positioning label is presented on the map interface.
The present invention is directed to the problem that existing wireless location method occurs, again develop the wireless location standard, navigation system and method to positioning label are reformed, also be about to originally by positioning label the locating base station that gets access to data group strong or the weak signal value be sent to service end system, signal value is judged, is chosen the location of realizing positioning label by the software in the service end system, reform into by the MCU in the positioning label and directly the locating base station that gets access to data group strong or the weak signal value is judged, chosen, and calculate the position of positioning label.Thus, solved the many problems that realize in the wireless location, comprised how avoiding the skip phenomenon, the stability of assurance system location and improve location efficiency, save Internet resources, avoid positioning software complicated operation and locate mode single and to reach the data uploaded absolutely effective etc.
Description of drawings
Fig. 1 is the structural representation of the ssid class value that is used for tag location of AP base station transmission;
Fig. 2 is for marking respectively the rectangular coordinate schematic diagram of each present position, AP base station of laying as the former map size of pressing reality take the map upper left corner;
Fig. 3 is that the present invention adopts segmented to measure the signal strength values schematic diagram of each AP base station standard by positioning label;
Fig. 4 is that the AP base station is the schematic diagram of single-point location and two point locations;
Fig. 5 is the schematic diagram that is in AP base station two point locations under the large zone;
Fig. 6 is the schematic diagram that is in an AP base station three-point fix under the large zone;
Fig. 7 is that the present invention is to the improvement structural representation of ssid class value;
Fig. 8 is the structural representation of the AP base station embodiment of realization wireless location of the present invention;
Fig. 9 is the structural representation of the positioning label device embodiment of realization wireless location of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical scheme of the present invention is at length set forth.Should be appreciated that the embodiment that below exemplifies only is used for description and interpretation the present invention, and do not consist of the restriction to technical solution of the present invention.
The problem that the present invention will solve according to emphasis: namely pass through optimization system, so that the burden of network, software and services device is shared, and can avoid positioning label generation skip phenomenon, and at first consider consisting of AP base station and the positioning label of wireless location system, they are achieved function separately.
The AP base station:
(1) take the map upper left corner as initial point, each present position, AP base station that marks respectively according to the map size by reality defines rectangular coordinate, determine respectively the large zone at each place, AP base station and/or zonule and the size (long * height) that each is regional, as shown in Figure 2.
(2) according to the size in zone of living in, AP base station, adopt segmented to measure the signal strength values of AP base station standard by positioning label, for example divide a, b, three sections signal strength values of measuring each AP base station standard of c, as shown in Figure 3.
The present invention determines according to experiment, the segmented measurement is divided into following three types:
Class1: by positioning label adopt segmented a1, the signal strength values of AP base station standard when b1, c1 are respectively 1 meter, 3 meters, 8 meters;
Type 2: by positioning label adopt segmented a2, the signal strength values of AP base station standard when b2, c2 are respectively 10 meters, 30 meters, 80 meters;
Type 3: by positioning label adopt segmented a3, the signal strength values of AP base station standard when b3, c3 are respectively 3 meters, 8 meters, 20 meters.
At first according to one of selected above-mentioned three types of the size in zone of living in, AP base station, how many standard signal values of then obtaining from this AP base station when measuring distance AP base station a rice, b rice and c rice position respectively by positioning label respectively is.
(3) determine the align_type of AP base station, namely the AP base station is to belong to the single-point location, as shown in Figure 2, still belongs to two point locations, shown in Fig. 4,5, and is to belong to three-point fix, as shown in Figure 6.
The locating information of the AP base station that above (1) to (3) are obtained is encoded into corresponding pointing character (such as Asicc character or Unicode character), and is written on the title-domain of ssid class value of AP base-station transmission, as shown in Figure 7.Wherein the locating information of AP base station comprises: measure the align_type of type and AP base station take the initial point set as the segmented of the rectangular coordinate of the AP base station that benchmark is determined, the zone at place, AP base station (large zone and/or zonule), each regional area size, AP base station.
Positioning label:
After positioning label of the present invention receives the ssid class value of AP base-station transmission, after judging that the ssid class value that receives is effective, with the data of the title-domain in effective ssid class value transmission as known conditions, calculate the residing large zone of label, zonule and concrete coordinate position, and be uploaded to the service end software on backstage.
That is to say, positioning label of the present invention no longer as before, only receive simply the ssid class value, but by writing the microcontroller (MCU of positioning label, Micro Control Unit) location algorithm, finish to judge whether the data that receive are effective by MCU, and finish the location computing according to active data.Original traditional service end work by the backstage has been placed in the positioning label finished, and the positioning position information that service end is finished as calculated according to positioning label, the information by correspondence on the map of the interface of software shows.
Do like this and obviously possess following advantage:
1) can reach very data validity;
2) data volume that sends to the background service end obviously reduces, and without any need for confirming to reply to positioning label, has saved thus a large amount of Internet resources;
3) location of navigation system on the whole stability greatly improve;
4) because background service end software does not position algorithm, thereby do not need to process mass data, only need carry out basic data judgement and information comparison, service end software can take into full account the function of improving and expanding other application type under the condition of height labour-saving.
By above analysis, the invention provides a kind of system embodiment of wireless location, comprise AP base station and positioning label, wherein:
The AP base station is used for will locate when required signal strength values transmits by the ssid class value, the locating information of this base station is written in the title-domain of ssid class value and is transferred to positioning label;
After positioning label, the ssid class value that is used for receiving are judged as effectively, according to the locating information of corresponding AP base station and the location computing that the signal strength values in the ssid class value is finished this label on the title-domain.
In the system embodiment of above-mentioned wireless location, the structure of AP base station equipment embodiment 100 comprises interconnective information coding module 110 and information transmission modular 120 as shown in Figure 8, wherein:
Information transmission modular 120 is used for the pointing character of input is written in the title-domain of ssid class value, and signal strength values is written in the signal codomain, is transferred to simultaneously positioning label.
Wherein, segmented measurement type namely divides multistage to measure the standard signal intensity level of AP base station with positioning label.
Segmented is measured type for example minute a, b, three sections standard signal intensity levels of measuring each section AP base station of c, comprises in the following three types any one:
The first kind: measuring section a1, b1, c1 are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by E
01, E
02, E
03
Second Type: measuring section a2, b2, c2 are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by E
04, E
05, E
06
The 3rd type: measuring section a3, b3, c3 are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by E
07, E
08, E
09
In align_type:
The single-point location is suitable for using in room or the office, as shown in Figure 2; As long as know that target enters in the room or indoor by the location computing of positioning label, needn't accurately locate.
Two point locations are suitable for using in passage, as shown in Figure 3, get any two points installation AP base station equipment in the passage.Perhaps, two point locations are suitable for using in a hall, and as shown in Figure 4, in the four jiaos of installations AP of hall central authorities and hall base station equipment, its setting accuracy can reach very high respectively.
Three-point fix is suitable for spacious place (such as outdoor square and other places) to be used, and is very accurate localization criteria in theory.
In the system embodiment of above-mentioned wireless location, the structure of positioning label device embodiment 200 comprises the information transmission modular 210, information decoding processing module 220 and the location Calculation module 230 that connect successively as shown in Figure 9, wherein:
Information transmission modular 210 is used for the ssid class value information that receives from the AP base station is judged, and will be judged as effective ssid class value and export to information decoding processing module 220;
Information decoding processing module 220, be used for and be decoded into the locating information of corresponding AP base station from the pointing character on the title-domain of the ssid class value of input, and parse signal strength values with the signal codomain from this ssid class value and export to together location Calculation module 230;
L/E
i＝(a1-b1)/(E
01-E
02)； (1)
Perhaps, L/E
i=(b1-c1)/(E
02-E
03); (2)
Perhaps, location Calculation module 230 is periodically known according to the locating information of AP base station: it is the first kind or Second Type or the 3rd type that the segmented of AP base station is measured type, and align_type is two point locations; Filtering out two signal strength values the strongest from a lot of signal strength values of input is E
I1, E
I2, then judge their separately residing standard signal intensity interval, and calculate respectively straight path S1, S2 between positioning label and corresponding two AP base stations with reference to above-mentioned computing formula (1) or (2), as shown in Figure 4; According to corresponding two AP base station information separately, calculate the position of this label reality between two AP base stations respectively.
As long as it is mobile to carry the straight path (S1+S2) of target between two AP base stations of positioning label, just can not produce any positioning runout, by positioning label location computing regularly, just can on the map display interface of service end software, clearly see the movement of this positioning label.
Perhaps, location Calculation module 230 calculates the residing position of positioning label according to the signal value of first three signal strength signal intensity maximum of receiving and the locating information of the AP base station of correspondence.
As shown in Figure 5, location Calculation module 230 is known according to the locating information of AP base station: it is the first kind or Second Type or the 3rd type that the segmented of AP base station is measured type, and align_type is three-point fix; Before this according to first three strongest signal strength value in a plurality of signal strength values of input calculate positioning label O respectively with the distance of corresponding three AP base stations (being AP1, AP2 and AP3); Formed leg-of-mutton three length of sides in position that go out three AP base stations according to these three AP base station information calculations separately again; Three little triangles that form with three AP base stations respectively according to positioning label O at last calculate the residing position of positioning label O.
In the system embodiment of above-mentioned wireless location, also comprise the background service end, wherein:
Zone and the current residing position coordinates of this label at this label place that location Calculation module 230 will calculate are exported to information transmission modular 210;
Information transmission modular 210 is used for the information of this labels of location Calculation module 230 outputs is uploaded to the background service end;
The background service end, the target that will carry positioning label for the information of uploading according to information transmission modular 210 is presented at map interface (software).
The present invention is directed to said system embodiment, the embodiment of the method for wireless location correspondingly also is provided, its flow process comprises the steps:
Required signal strength values will located by in the ssid class value transmission in the AP base station, the locating information of this base station will be written in the title-domain of ssid class value and be transferred to positioning label;
After positioning label is judged as the ssid class value that receives effectively, according to the position of signal strength values calculating book label on the locating information of corresponding AP base station on the title-domain and the signal codomain.
Among the said method embodiment,
The AP base station is written to the locating information of this base station in the title-domain of ssid class value and is transferred to positioning label, specifically comprises:
The AP base station is encoded into pointing character with the locating information of this base station, and is written in the title-domain of ssid class value and is transferred to positioning label; Wherein, the locating information of this base station initial point that comprises setting is that rectangular coordinate, the zone at place, the area size in zone, the segmented of this base station of determining of benchmark measured type and align_type; Segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of the described access point base station standard of positioning label areal survey; Align_type comprises any one in three-point fix, two point locations and the single-point location.
Positioning label specifically comprises according to the locating information of corresponding AP base station and the location computing that the signal value in the ssid class value is finished this label on the title-domain:
The pointing character that receives on the title-domain is decoded into the locating information of corresponding AP base station;
Measure type and effective signal strength values according to the segmented of AP base station, judge the residing standard signal intensity interval of this signal strength values;
Calculate the distance L of positioning label and AP base station according to the align_type of AP base station.
The segmented measurement type of above-mentioned AP base station comprises any one in the first kind, Second Type and the 3rd type; The align_type of AP base station comprises any one in single-point location, two point locations and the three-point fix.
In said method embodiment, also comprise:
The large zone at this label place that positioning label will calculate and following zonule and the present residing coordinate position of label are uploaded to the background service end;
The background service end, the target that will carry positioning label for the information of uploading according to positioning label is presented at map interface (software).
The present invention has developed the wireless location standard again, navigation system and method to positioning label are reformed, also be about to originally by positioning label the locating base station that gets access to data group strong or the weak signal value be sent to service end system, signal value is judged, is chosen the location of realizing positioning label by the software in the service end system, reform into by the MCU in the positioning label and directly the locating base station that gets access to data group strong or the weak signal value is judged, chosen, and calculate the position of positioning label.Thus, solved the many problems that realize in the wireless location, comprised how avoiding the skip phenomenon, the stability of assurance system location and improve location efficiency, save Internet resources, avoid positioning software complicated operation and locate mode single and to reach the data uploaded absolutely effective etc.
For those skilled in the art; after having understood content of the present invention and principle; can be in the situation that does not deviate from the principle and scope of the present invention; the method according to this invention is carried out various corrections and the change on form and the details, but these are based on correction of the present invention with change still within claim protection range of the present invention.
Claims (20)
1. the system of a wireless location comprises access point base station and positioning label, it is characterized in that:
Access point base station is used for will locate when required signal strength values transmits by the service set identifier class value, the locating information of this base station is written in the title-domain of this service set identifier class value and is transferred to positioning label;
After positioning label, the service set identifier class value that is used for receiving are judged as effectively, according to the locating information of corresponding access point base station and the position of described signal strength values calculating book label.
2. according to system claimed in claim 1, it is characterized in that described access point base station comprises interconnective information coding module and first information transport module, wherein:
The information coding module is used for the locating information of described this base station is encoded into pointing character, and exports to information transmission modular; The initial point that the locating information of described this base station comprises setting is the area size in the rectangular coordinate of this definite base station of benchmark, the zone at this place, base station, described zone, type and the align_type that segmented is measured; Described segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of the described access point base station standard of positioning label areal survey; Described align_type comprises any one in three-point fix, two point locations and the single-point location;
First information transport module is used for the pointing character of input is written in the title-domain of described service set identifier class value, and the signal strength values of this base station is written in the signal codomain of described service set identifier class value, is transferred to simultaneously described positioning label.
3. according to system claimed in claim 2, it is characterized in that described segmented is measured the standard signal intensity level that namely divides three sections to measure described access point base station;
The type that the described segmented of information coding module coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
4. according to system claimed in claim 3, it is characterized in that described positioning label comprises the second information transmission modular, information decoding processing module and the location Calculation module that connects successively, wherein:
The second information transmission modular is used for the described service set identifier class value information that receives from described access point base station is judged, and will be judged as effective service set identifier class value and export to the information decoding processing module;
The information decoding processing module, be used for the locating information that pointing character from the described title-domain of the described service set identifier of input is decoded into corresponding access point base station, and export to together the location Calculation module with the signal strength values that the described signal codomain from this service set identifier class value parses;
The location Calculation module is used for according to the locating information of the described access point base station of inputting and the position of described this label of signal strength values calculative determination.
5. according to system claimed in claim 4, it is characterized in that type, described align_type and the described signal strength values that described location Calculation module is measured according to the segmented of knowing described access point base station carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is the single-point location; Judge the interval of the residing standard signal intensity of described signal strength values, and calculate the distance of this positioning label and described access point base station according to the type that described segmented is measured, judge then whether described positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculate straight path between this positioning label and corresponding two access point base station, then calculate described positioning label actual position between described two access point base station;
The third knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that described three access point base station form respectively according to this label.
6. according to claim 4 or 5 described systems, it is characterized in that,
Described location Calculation module is judged and the described align_type priority of processing is followed successively by: three-point fix, two point locations and single-point location.
7. according to claim 4 or 5 described systems, it is characterized in that, also comprise the background service end, wherein:
Zone and/or the current residing position coordinates of this label at this label place that described location Calculation module will calculate are exported to the second information transmission modular;
The second information transmission modular is uploaded to the background service end with the information of this label of described location Calculation module output;
The background service end, the target that will carry described positioning label for the information of uploading according to the second information transmission modular is presented at map interface.
8. an access point base station equipment of realizing wireless location is characterized in that, comprises interconnective information coding module and information transmission modular, wherein:
The information coding module is used for the locating information of this base station is encoded into pointing character, and exports to information transmission modular;
Information transmission modular is used for the pointing character of input is written in the title-domain of service set identifier class value, and the signal strength values of this base station is written in the signal codomain of described service set identifier class value, is transferred to simultaneously positioning label.
9. according to access point base station equipment claimed in claim 8, it is characterized in that,
The locating information of described this base station of described information coding module coding comprises: take the initial point set as the area size in the rectangular coordinate of this base station that benchmark is determined, the zone at this place, base station, described zone, type and the align_type that segmented is measured; Described segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of the described access point base station standard of positioning label areal survey; Described align_type comprises any one in three-point fix, two point locations and the single-point location.
10. according to access point base station equipment claimed in claim 9, it is characterized in that described segmented is measured the standard signal intensity level that namely divides three sections to measure described access point base station;
The type that the described segmented of described information coding module coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
11. a positioning label device of realizing wireless location is characterized in that, comprises the information transmission modular, information decoding processing module and the location Calculation module that connect successively, wherein:
Information transmission modular is used for the service set identifier class value information that receives from access point base station is judged, and will be judged as effective service set identifier class value and export to the information decoding processing module;
The information decoding processing module, be used for the locating information that pointing character from the title-domain of the described service set identifier of input is decoded into corresponding access point base station, and export to together the location Calculation module with the signal strength values that the signal codomain from this service set identifier class value parses;
The location Calculation module is used for according to the locating information of the described access point base station of inputting and the position of described this label of signal strength values calculative determination.
12. according to the described positioning label device of claim 11, it is characterized in that type, described align_type and the described signal strength values that described location Calculation module is measured according to the segmented of knowing described access point base station carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is the single-point location; Judge the interval of the residing standard signal intensity of described signal strength values, and calculate the distance of this positioning label and described access point base station according to the type that described segmented is measured, judge then whether described positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculate straight path between this positioning label and corresponding two access point base station, then calculate described positioning label actual position between described two access point base station;
The third knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that described three access point base station form respectively according to this label.
13., it is characterized in that described location Calculation module is judged and the described align_type priority of processing is followed successively by according to the described positioning label device of claim 12: three-point fix, two point locations and single-point location.
14. according to the described positioning label device of claim 12, it is characterized in that,
Zone and/or the current residing position coordinates of this label at this label place that described location Calculation module also will calculate are exported to described information transmission modular;
Described information transmission modular is uploaded to the background service end with the information of this label of described location Calculation module output.
15. the method for a wireless location relates to access point base station and positioning label, it is characterized in that: the method comprises:
Access point base station will located required signal strength values by in the service set identifier class value transmission, the locating information of this base station will be written in the title-domain of this service set identifier class value and be transferred to positioning label;
After positioning label is judged as the service set identifier class value that receives effectively, according to the locating information of corresponding access point base station and the position of described signal strength values calculating book label.
16. in accordance with the method for claim 15, it is characterized in that described access point base station is written to the locating information of this base station in the title-domain of this service set identifier class value and is transferred to positioning label, specifically comprises:
Described access point base station is encoded into pointing character with the locating information of described this base station, and is written in the title-domain of described service set identifier class value and is transferred to described positioning label; The initial point that the locating information of described this base station comprises setting is that rectangular coordinate, the zone at place, the area size in zone, the segmented of this definite base station of benchmark measured type and align_type; Described segmented is measured namely the size according to access point base station zone of living in, by the signal strength values of the described access point base station standard of positioning label areal survey; Described align_type comprises any one in three-point fix, two point locations and the single-point location.
17. in accordance with the method for claim 16, it is characterized in that,
The type that the described segmented of described access point base station coding is measured comprises any one in the following three types:
The first kind: three sections measuring sections are respectively 1 meter, 3 meters, 8 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the first kind;
Second Type: three sections measuring sections are respectively 10 meters, 30 meters, 80 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of Second Type;
The 3rd type: three sections measuring sections are respectively 3 meters, 8 meters, 20 meters, and its standard signal intensity level separately is followed successively by three standard signal intensity levels of the 3rd type.
18. in accordance with the method for claim 17, it is characterized in that described positioning label specifically comprises according to the locating information of corresponding access point base station and the position of described signal strength values calculating book label:
The pointing character that receives on the described title-domain is decoded into the locating information of corresponding access point base station;
Measure type and effective signal strength values according to the segmented of described access point base station, judge the residing standard signal intensity interval of this signal strength values;
Calculate the distance of this label and described access point base station according to the align_type of described access point base station.
19. in accordance with the method for claim 18, it is characterized in that the described align_type priority that described positioning label is processed according to described align_type is followed successively by: three-point fix, two point locations and single-point location; Type, described align_type and the described signal strength values of measuring according to the segmented of described access point base station carries out any one in the position calculation of following three kinds of these labels:
The first knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is the single-point location; Judge the interval of the residing standard signal intensity of described signal strength values, and calculate the distance of this positioning label and described access point base station according to the type that described segmented is measured, judge then whether described positioning label runs off large zone and/or zonule;
The second knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is two point locations; Two peak signal values of judgement input are residing standard signal intensity interval separately, and calculate straight path between this positioning label and corresponding two access point base station, then calculate described positioning label actual position between described two access point base station;
The third knows that according to the locating information of described access point base station the type that the segmented of described access point base station is measured is the first kind or Second Type or the 3rd type, and described align_type is three-point fix; At first according to first three signal strength values of signal strength signal intensity maximum in a plurality of signal strength signal intensity degree values of input calculate this positioning label respectively with the distance of corresponding three access point base station, and formed leg-of-mutton three length of sides in the position that calculates these three access point base station, calculate the residing position of this label with three little triangles that described three access point base station form respectively according to this label.
20. according to each described method of claim 15 to 19, also relate to the service end on backstage, the method also comprises:
The zone at this label place that described positioning label will calculate and the current residing position coordinates of this label are uploaded to the background service end;
The target that the information that the background service end is uploaded according to described positioning label will be carried described positioning label is presented on the map interface.
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