CN110035381A - A kind of indoor orientation method and system based on the transplanting of RSSI fingerprint base - Google Patents
A kind of indoor orientation method and system based on the transplanting of RSSI fingerprint base Download PDFInfo
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- CN110035381A CN110035381A CN201910309204.6A CN201910309204A CN110035381A CN 110035381 A CN110035381 A CN 110035381A CN 201910309204 A CN201910309204 A CN 201910309204A CN 110035381 A CN110035381 A CN 110035381A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Abstract
The invention discloses a kind of indoor orientation methods and system based on the transplanting of RSSI fingerprint base, comprising steps of S1, on the ceiling LED light source of the array deployment with wireless module；S2, building RSSI distance model and ceiling plane RSSI fingerprint base；S3, the ceiling plane RSSI fingerprint base is transplanted to plane locating for wireless device to be positioned；S4, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.Present invention eliminates the complicated processes for constructing and updating fingerprint base in conventional wireless locating scheme by manually acquiring, and reduce the consumption of plenty of time and manpower.
Description
Technical field
The invention belongs to indoor positioning technologies field more particularly to a kind of indoor positioning sides based on the transplanting of RSSI fingerprint base
Method and system.
Background technique
With the rapid development of cordless communication network, mobile Internet and intelligent terminal, the demand based on location-based service
It is continuously increased.In different complex environments, location information service is reliably continuously provided, has touched the side of people's life
Aspect face, therefore also result in people as the indoor positioning technologies for providing location-based service guarantee and more and more pay close attention to.
Although outdoor can be used GPS and be positioned, indoors, in the scenes such as underground, building be intensive, due to signal
Block, decay, multi-path effect a series of problems, such as, GPS cannot provide positioning service substantially, can only using other methods come into
Row indoor positioning.Currently, the indoor positioning technologies for comparing mainstream mainly use the wireless technologys such as bluetooth, WiFi, Zigbee to combine
Fingerprint location method can achieve the positioning accuracy of meter level, meet most of indoor application demands.
Positioning method based on location fingerprint mainly carries out abstract and formalization to the environmental characteristic in located space and retouches
It states, uses the received signal strength indicator (Received of AP each in localizing environment (Access Point, wireless access point)
Signal Strength Indication, RSSI) location information in sequence description localizing environment, and collect these RSSI sequences
Column constitute location fingerprint database (Radio Map).Finally, using in the RSSI sequence and location database of user's real-time measurement
Location fingerprint matched, according to the matching similarity of fingerprint base, complete the estimation to user location.Such localization method master
It to include two stages: off-line training step and tuning on-line stage.Off-line training step, it is therefore intended that establish a position and refer to
Line database, before positioning, positioning system deployment personnel traverse all positions in localizing environment, while collecting in each sampled point
The location information of the MAC Address of each AP, RSSI value and sampled point is formed one associated three by the RSSI value from different AP
Tuple data is stored in location fingerprint library.In the tuning on-line stage, user is in localization region when positioning, and acquisition is all in real time
The RSSI of AP access point, and MAC Address and RSSI value are formed into binary group, the data as location matches algorithm input, and lead to
It crosses specific matching algorithm and carries out location estimation.
The application for a patent for invention of Publication No. CN104754735A disclose a kind of location fingerprint library construction method and
Based on the localization method in the location fingerprint library, S11: I sampled point is selected, and Unified number, measurement are carried out to all sampled points
The position coordinates of each sampled point；S12: the RSSI information of L AP around current sampling point is acquired in J different time sections, is obtained
To J group fingerprint sequence group vector, by the fingerprint sequence collection of J group fingerprint sequence group vector composition current sampling point；S13: will
The position coordinates of current sampling point are combined with the fingerprint sequence collection of current sampling point, are obtained current sampling point and are based on fingerprint sequence group
Location fingerprint；S14: repeating step S12 to S14, obtain location fingerprint of all sampled points based on fingerprint sequence group, and according to
The location fingerprint based on fingerprint sequence group of all sampled points obtains the location fingerprint library based on fingerprint sequence group.But fingerprint is fixed
RSSI fingerprint base in the method for position is generally required by manually establishing, and since the mutability of wireless signal needs often to update RSSI
Fingerprint base, therefore wireless indoor positioning system is caused to build dimension higher cost, hinder marketing application.
Therefore, in view of the drawbacks of the prior art, stable fingerprint base how is constructed to save in conventional wireless locating scheme
The complicated processes that fingerprint base is constructed and updated by manually acquiring are this field urgent problems to be solved.
Summary of the invention
It is fixed the purpose of the present invention is in view of the drawbacks of the prior art, providing a kind of interior based on the transplanting of RSSI fingerprint base
Position method and system, relate generally to the wireless LED light source and wireless device to be positioned of ceiling plane.
In order to achieve the goal above, the invention adopts the following technical scheme:
A kind of indoor orientation method based on the transplanting of RSSI fingerprint base, which is characterized in that comprising steps of
S1, array deployment has the LED light source of wireless module on the ceiling；
S2, building RSSI distance model and ceiling plane RSSI fingerprint base；
S3, the ceiling plane RSSI fingerprint base is transplanted to plane locating for wireless device to be positioned；
S4, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
Further, the S2 specifically:
Distance between S21, each wireless module of calculating；
S22, the wireless signal RSSI value that the wireless module receives is obtained；
S23, the relational model that RSSI value and propagation distance are corrected by the RSSI value and respective distances；
S24, the position coordinates of each wireless module and the every other wireless RSSI value combination building ceiling measured are put down
The RSSI fingerprint base in face.
Preferably, LED light source position coordinates, wireless module position coordinates corresponding with light source are determined by finishing drawing.
Further, fingerprint base transplanting is stated are as follows:
X-axis, the y-axis coordinate value of position coordinates are constant, and z-axis coordinate value is according to ceiling plane and wireless device institute to be positioned
The difference in height h of the plane at placedValue converted；The RSSI value of respective point is calculated according to RSSI distance model.
Further, the location matches algorithm of the positioning is nearest neighbor method or naive Bayesian method.
The present invention also proposes a kind of indoor locating system based on the transplanting of RSSI fingerprint base, comprising:
Setup module has the LED light source of wireless module for the deployment of array on the ceiling；
Module is constructed, for constructing RSSI distance model and ceiling plane RSSI fingerprint base；
Module is transplanted, is put down for the RSSI fingerprint base of the ceiling plane to be transplanted to locating for wireless device to be positioned
Face；
Locating module, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
Further, the building module includes:
Computing module, for calculating the distance between each wireless module；
Obtain module, the wireless signal RSSI value received for obtaining the wireless module；
Correction module, for the relational model by the RSSI value and respective distances amendment RSSI value and propagation distance；
Processing module, for constructing the position coordinates of each wireless module and the every other wireless RSSI value combination measured
The RSSI fingerprint base of ceiling plane.
Preferably, LED light source position coordinates, wireless module position coordinates corresponding with light source are determined by finishing drawing.
Further, fingerprint base transplanting is stated are as follows:
X-axis, the y-axis coordinate value of position coordinates are constant, and z-axis coordinate value is according to ceiling plane and wireless device institute to be positioned
The difference in height h of the plane at placedValue converted；The RSSI value of respective point is calculated according to RSSI distance model.
Further, the location matches algorithm of the positioning is nearest neighbor method or naive Bayesian method.
The invention has the following beneficial effects:
Present invention wireless LED light source known to installation site in ceiling plane utilizes the measurement of each wireless module
RSSI value and respective distances carry out modified R/S SI distance model and automatically create the RSSI fingerprint base of ceiling plane.Further according to simple
Geometric formula calculate, the RSSI fingerprint base of ceiling plane can be transplanted in equipment plane and construct equipment plane
RSSI fingerprint base eliminates the complicated processes for constructing and updating fingerprint base in conventional wireless locating scheme by manually acquiring,
Reduce plenty of time and manpower consumption.Meanwhile wireless LED light source is also used as wisdom illumination, the basis of wireless access is set
It applies, realizes set of system multi-functional.
Detailed description of the invention
Fig. 1 is the flow chart of localization method of the present invention；
Fig. 2 is space layout schematic diagram of the present invention；
Fig. 3 is that fingerprint base of the present invention transplants schematic diagram；
Fig. 4 is the structure chart of positioning system of the present invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that illustrating the basic structure that only the invention is illustrated in a schematic way provided in following embodiment
Think, only shown in schema then with related component in the present invention rather than component count, shape and size when according to actual implementation
Draw, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel
It is likely more complexity.
The present invention provides a kind of indoor orientation methods and system based on the transplanting of RSSI fingerprint base, relate generally to ceiling
The wireless LED light source and wireless device to be positioned of plane, the wireless LED light source known to installation site in ceiling plane, benefit
The RSSI value and respective distances measured with each wireless module is come modified R/S SI distance model and automatically creates ceiling plane
RSSI fingerprint base.It is calculated further according to simple geometric formula, the RSSI fingerprint base of ceiling plane can be transplanted to equipment and put down
The RSSI fingerprint base of equipment plane is constructed in face.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
Embodiment one
As shown in Figure 1, the present embodiment proposes a kind of indoor orientation method based on the transplanting of RSSI fingerprint base, comprising:
S1, array deployment has the LED light source of wireless module on the ceiling；
As shown in Figure 2, it is necessary first to which array deployment has wireless module (02) in ceiling plane (01) indoors
LED light source (03).It is also possible to realize the deployment of wireless module (02) by deployed intelligent lighting system.?
That is, it is possible to directly reduce and be deployed to without being improved to existing lighting system by existing lighting system
This.Wireless LED light source is also used as the infrastructure of wisdom illumination, wireless access while as indoor positioning facility,
Realize set of system multi-functional.
S2, building RSSI distance model and ceiling plane RSSI fingerprint base；
Specifically, RSSI distance model and ceiling plane RSSI fingerprint base are constructed specifically:
Distance between S21, each wireless module of calculating；
Specifically, LED light source position coordinates can be determined by finishing drawing, therefore, wireless module corresponding with light source position
Coordinate also accordingly determines, to calculate the distance between each wireless module and other wireless modules.Calculating for distance,
The application is not limited in any way.
Correspondingly, as shown in Fig. 2, since LED light source (03) position coordinates can be determined by finishing drawing, corresponding nothing
Wire module (02) position coordinates can also be determined, thus calculate each wireless module (02) and other wireless modules (02) it
Between distance.
S22, the wireless signal RSSI value that the wireless module receives is obtained；
Wireless module has the wireless signal of itself identity code (ID) to surrounding transmitting, also receives other wireless modules simultaneously
The wireless signal of sending, to construct the set of each wireless module ID Yu received wireless signal RSSI value.
S23, the relational model that RSSI value and propagation distance are corrected by the RSSI value and respective distances；
Each wireless module (02) has the wireless signal of itself identity code (ID) to surrounding transmitting, also receives it simultaneously
The wireless signal that his wireless module (02) issues, thus construct the ID of each wireless module (02) with it is received every other
The set of wireless signal RSSI value.Assuming that a total of n wireless LED light source, the wireless module (02) of i-th of light source possesses IDi,
The position coordinates of corresponding light source or wireless module are (xi,yi,ht), wherein xi,yi,htRespectively indicate the x-axis, y of i-th of light source
The coordinate value of axis and axis.The corresponding every other wireless signal RSSI value received is represented by (Rij, j=1,2 ..., n ∩ j ≠
i).Greatly due to indoor application scene, it can be corrected by wireless signal RSSI value and respective distances wireless
The relational model (abbreviation RSSI distance model) of signal RSSI value and propagation distance, so that the RSSI distance model of various scenes is more
Add accurate.
S24, the position coordinates of each wireless module and the every other wireless RSSI value combination building ceiling measured are put down
The RSSI fingerprint base in face.
For example, by the position coordinates of each wireless module (02) and the every other wireless RSSI value combination building smallpox measured
The RSSI fingerprint base of plate plane (01), i.e. [(xi,yi,ht), (Rij, j=1,2 ..., n ∩ j ≠ i)].
S3, the ceiling plane RSSI fingerprint base is transplanted to plane locating for wireless device to be positioned；
Specifically, by space geometry formula and RSSI distance model, the RSSI fingerprint base of ceiling plane is turned
It is transplanted to plane locating for wireless device to be positioned after changing, constructs the RSSI fingerprint base of equipment plane.
As shown in figure 3, in conjunction with space geometry formula and RSSI distance model, by the RSSI fingerprint base of ceiling plane (01)
It is transplanted to plane locating for wireless device to be positioned after being converted, constructs RSSI the fingerprint base [(x of equipment plane (04)i,yi,
hu), (Ri'j, j=1,2 ..., n ∩ j ≠ i)].That is, the RSSI fingerprint base of fingerprint base and ceiling plane after transplanting
It compares, x-axis, y-axis coordinate value are constant, and z-axis coordinate value plane according to locating for ceiling plane and wireless device to be positioned
Difference in height hdValue converted.And the RSSI value of respective point is calculated according to RSSI distance model.Here, not to RSSI distance
The building of model is defined.
S4, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
Specifically, the wireless signal that wireless device detection surrounding wireless module to be positioned issues, and according to the nothing searched
Line signal determines wireless identification and wireless signal RSSI value, compares with the RSSI fingerprint base data of equipment plane, using referring to
Line positioning mode determines wireless device current position coordinates to be positioned.
For example, the wireless signal that wireless device (05) detection surrounding wireless module (02) to be positioned issues, and determine search
The wireless identification ID and wireless signal RSSI value of the wireless signal arrived are carried out pair with the RSSI fingerprint base data of equipment plane (04)
Than determining the current position coordinates of wireless device to be positioned (05) using fingerprint location method.
Tuning on-line stage common location matches algorithm is nearest neighbor method (NNSS) and naive Bayesian method (Naive
Bayes).NNSS is the matching process based on analogical learning, uses the sampling sample of the sampling sample and training stage of positioning stage
Example carries out similarity mode.The RSSI mean value of training stage is known as location fingerprint, using Euclidean distance describe location fingerprint with
Similarity between location fingerprint, finally, obtaining the coordinate of the highest location fingerprint of similarity as estimated location.Naive Bayesian
Method is that location estimation is carried out using Bayesian Estimation method, and naive Bayesian method is that one kind derives from statistical classification method,
Be Bayes's classification one kind be based on Bayesian realization, it by calculate target posterior probability come realize positioning.It should
Entire localization region is divided into different grids in the training stage of positioning by method, and is acquired in each grid region each
The RSSI of AP access point is as sample data.It is obtained according to the real-time RSSI that terminal acquires using Bayesian formula in positioning stage
Out in the posterior probability of different location, finally using the position of posteriority maximum probability as final estimated location.Here, not to finger
Line positioning mode is defined.
Embodiment two
As shown in figure 4, correspondingly, the present embodiment proposes a kind of indoor positioning based on the transplanting of RSSI fingerprint base
System, comprising:
Setup module has the LED light source of wireless module for the deployment of array on the ceiling；
As shown in Figure 2, it is necessary first to which array deployment has wireless module (02) in ceiling plane (01) indoors
LED light source (03).It is also possible to realize the deployment of wireless module (02) by deployed intelligent lighting system.?
That is, it is possible to directly reduce and be deployed to without being improved to existing lighting system by existing lighting system
This.Wireless LED light source is also used as the infrastructure of wisdom illumination, wireless access while as indoor positioning facility,
Realize set of system multi-functional.
Module is constructed, for constructing RSSI distance model and ceiling plane RSSI fingerprint base；
Specifically, building module specifically includes:
Computing module, for calculating the distance between each wireless module；
Specifically, LED light source position coordinates can be determined by finishing drawing, therefore, wireless module corresponding with light source position
Coordinate also accordingly determines, to calculate the distance between each wireless module and other wireless modules.Calculating for distance,
The application is not limited in any way.
Correspondingly, as shown in Fig. 2, since LED light source (03) position coordinates can be determined by finishing drawing, corresponding nothing
Wire module (02) position coordinates can also be determined, thus calculate each wireless module (02) and other wireless modules (02) it
Between distance.
Obtain module, the wireless signal RSSI value received for obtaining the wireless module；
Wireless module has the wireless signal of itself identity code (ID) to surrounding transmitting, also receives other wireless modules simultaneously
The wireless signal of sending, to construct the set of each wireless module ID Yu received wireless signal RSSI value.
Correction module, for the relational model by the RSSI value and respective distances amendment RSSI value and propagation distance；
Each wireless module (02) has the wireless signal of itself identity code (ID) to surrounding transmitting, also receives it simultaneously
The wireless signal that his wireless module (02) issues, thus construct the ID of each wireless module (02) with it is received every other
The set of wireless signal RSSI value.Assuming that a total of n wireless LED light source, the wireless module (02) of i-th of light source possesses IDi,
The position coordinates of corresponding light source or wireless module are (xi,yi,ht), wherein xi,yi,htRespectively indicate the x-axis, y of i-th of light source
The coordinate value of axis and axis.The corresponding every other wireless signal RSSI value received is represented by (Rij, j=1,2 ..., n ∩ j ≠
i).Greatly due to indoor application scene, it can be corrected by wireless signal RSSI value and respective distances wireless
The relational model (abbreviation RSSI distance model) of signal RSSI value and propagation distance, so that the RSSI distance model of various scenes is more
Add accurate.
Processing module, for constructing the position coordinates of each wireless module and the every other wireless RSSI value combination measured
The RSSI fingerprint base of ceiling plane.
For example, by the position coordinates of each wireless module (02) and the every other wireless RSSI value combination building smallpox measured
The RSSI fingerprint base of plate plane (01), i.e. [(xi,yi,ht), (Rij, j=1,2 ..., n ∩ j ≠ i)].
Module is transplanted, is put down for the RSSI fingerprint base of the ceiling plane to be transplanted to locating for wireless device to be positioned
Face；
Specifically, by space geometry formula and RSSI distance model, the RSSI fingerprint base of ceiling plane is turned
It is transplanted to plane locating for wireless device to be positioned after changing, constructs the RSSI fingerprint base of equipment plane.
As shown in figure 3, in conjunction with space geometry formula and RSSI distance model, by the RSSI fingerprint base of ceiling plane (01)
It is transplanted to plane locating for wireless device to be positioned after being converted, constructs RSSI the fingerprint base [(x of equipment plane (04)i,yi,
hu), (Ri'j, j=1,2 ..., n ∩ j ≠ i)].That is, the RSSI fingerprint base of fingerprint base and ceiling plane after transplanting
It compares, x-axis, y-axis coordinate value are constant, and z-axis coordinate value plane according to locating for ceiling plane and wireless device to be positioned
Difference in height hdValue converted.And the RSSI value of respective point is calculated according to RSSI distance model.Here, not to RSSI distance
The building of model is defined.
Locating module, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
Specifically, the wireless signal that wireless device detection surrounding wireless module to be positioned issues, and according to the nothing searched
Line signal determines wireless identification and wireless signal RSSI value, compares with the RSSI fingerprint base data of equipment plane, using referring to
Line positioning mode determines wireless device current position coordinates to be positioned.
For example, the wireless signal that wireless device (05) detection surrounding wireless module (02) to be positioned issues, and determine search
The wireless identification ID and wireless signal RSSI value of the wireless signal arrived are carried out pair with the RSSI fingerprint base data of equipment plane (04)
Than determining the current position coordinates of wireless device to be positioned (05) using fingerprint location method.
Tuning on-line stage common location matches algorithm is nearest neighbor method (NNSS) and naive Bayesian method (Naive
Bayes).NNSS is the matching process based on analogical learning, uses the sampling sample of the sampling sample and training stage of positioning stage
Example carries out similarity mode.The RSSI mean value of training stage is known as location fingerprint, using Euclidean distance describe location fingerprint with
Similarity between location fingerprint, finally, obtaining the coordinate of the highest location fingerprint of similarity as estimated location.Naive Bayesian
Method is that location estimation is carried out using Bayesian Estimation method, and naive Bayesian method is that one kind derives from statistical classification method,
Be Bayes's classification one kind be based on Bayesian realization, it by calculate target posterior probability come realize positioning.It should
Entire localization region is divided into different grids in the training stage of positioning by method, and is acquired in each grid region each
The RSSI of AP access point is as sample data.It is obtained according to the real-time RSSI that terminal acquires using Bayesian formula in positioning stage
Out in the posterior probability of different location, finally using the position of posteriority maximum probability as final estimated location.Here, not to finger
Line positioning mode is defined.
It follows that the application wireless LED light source known to installation site in ceiling plane, utilizes each wireless mould
The RSSI value and respective distances of block measurement carry out modified R/S SI distance model and automatically create the RSSI fingerprint base of ceiling plane.Again
It is calculated according to simple geometric formula, the RSSI fingerprint base of ceiling plane can be transplanted in equipment plane and construct equipment
The RSSI fingerprint base of plane, eliminates and constructs and update the cumbersome of fingerprint base in conventional wireless locating scheme by manually acquiring
Process reduces plenty of time and manpower consumption.Meanwhile wireless LED light source is also used as the base of wisdom illumination, wireless access
Infrastructure realizes set of system multi-functional.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of indoor orientation method based on the transplanting of RSSI fingerprint base, which is characterized in that comprising steps of
S1, array deployment has the LED light source of wireless module on the ceiling；
S2, building RSSI distance model and ceiling plane RSSI fingerprint base；
S3, the ceiling plane RSSI fingerprint base is transplanted to plane locating for wireless device to be positioned；
S4, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
2. indoor orientation method according to claim 1, which is characterized in that the S2 specifically:
Distance between S21, each wireless module of calculating；
S22, the wireless signal RSSI value that the wireless module receives is obtained；
S23, the relational model that RSSI value and propagation distance are corrected by the RSSI value and respective distances；
S24, the position coordinates of each wireless module and the every other wireless RSSI value combination measured are constructed into ceiling plane
RSSI fingerprint base.
3. indoor orientation method according to claim 2, which is characterized in that
LED light source position coordinates, wireless module position coordinates corresponding with light source are determined by finishing drawing.
4. indoor orientation method according to claim 2, which is characterized in that the fingerprint base transplanting are as follows: the x of position coordinates
Axis, y-axis coordinate value are constant, the difference in height of z-axis coordinate value plane according to locating for ceiling plane and wireless device to be positioned
hdValue converted；The RSSI value of respective point is calculated according to RSSI distance model.
5. indoor orientation method according to claim 1, which is characterized in that
The location matches algorithm of the positioning is nearest neighbor method or naive Bayesian method.
6. a kind of indoor locating system based on the transplanting of RSSI fingerprint base characterized by comprising
Setup module has the LED light source of wireless module for the deployment of array on the ceiling；
Module is constructed, for constructing RSSI distance model and ceiling plane RSSI fingerprint base；
Module is transplanted, for the RSSI fingerprint base of the ceiling plane to be transplanted to plane locating for wireless device to be positioned；
Locating module, the RSSI fingerprint base based on transplanting are treated location of wireless devices and are positioned.
7. indoor locating system according to claim 6, which is characterized in that the building module includes:
Computing module, for calculating the distance between each wireless module；
Obtain module, the wireless signal RSSI value received for obtaining the wireless module；
Correction module, for the relational model by the RSSI value and respective distances amendment RSSI value and propagation distance；
Processing module, for the position coordinates of each wireless module and the every other wireless RSSI value combination measured to be constructed smallpox
The RSSI fingerprint base of plate plane.
8. indoor locating system according to claim 7, which is characterized in that
LED light source position coordinates, wireless module position coordinates corresponding with light source are determined by finishing drawing.
9. indoor locating system according to claim 7, which is characterized in that the fingerprint base transplanting are as follows: the x of position coordinates
Axis, y-axis coordinate value are constant, the difference in height of z-axis coordinate value plane according to locating for ceiling plane and wireless device to be positioned
hdValue converted；The RSSI value of respective point is calculated according to RSSI distance model.
10. indoor locating system according to claim 6, which is characterized in that
The location matches algorithm of the positioning is nearest neighbor method or naive Bayesian method.
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