CN116233864B - Deployment method and system for meeting error expectation by Bluetooth beacon personnel positioning - Google Patents
Deployment method and system for meeting error expectation by Bluetooth beacon personnel positioning Download PDFInfo
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- CN116233864B CN116233864B CN202310510261.7A CN202310510261A CN116233864B CN 116233864 B CN116233864 B CN 116233864B CN 202310510261 A CN202310510261 A CN 202310510261A CN 116233864 B CN116233864 B CN 116233864B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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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
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a deployment method and a deployment system for Bluetooth beacon personnel positioning meeting error expectation, comprising a Bluetooth beacon fitting error formula unit, a signal intensity distance error unit, a positioning accuracy Bluetooth beacon trusted radius unit, a single-double-point expected coverage determination unit, a Bluetooth beacon coverage expectation unit, a coverage calculation unit and an output unit, wherein the Bluetooth beacon fitting error formula is determined according to a path loss model, and then the error sum of the distances corresponding to different signal intensities and the actual distance is obtained to obtain the trusted range radius value of a Bluetooth beacon; then determining the expected coverage of single points and double points, and further obtaining the corresponding Bluetooth beacon number and the expected coverage; and finally, determining the final coverage according to the active area and the corresponding Bluetooth beacon number and the coverage expectation. The invention optimizes the most coverage areas of the deployment number, thereby meeting the aims of pursuing small error and saving cost for users.
Description
Technical Field
The invention relates to a deployment method and a deployment system for meeting error expectation in positioning of Bluetooth beacon personnel, and belongs to the technical field of Bluetooth positioning.
Background
Bluetooth positioning is based on RSSI (Received Signal Strength Indication, signal field strength indication) values, and positioning is performed by the principle of triangulation. The method has many mature business applications in the fields of aged-care positioning, substation personnel positioning, chemical plant personnel positioning, building site personnel positioning and the like.
The existing Bluetooth positioning technology continuously transmits broadcast through a Bluetooth beacon, and after a positioning card collects Bluetooth signals, the positioning card performs preliminary calculation, and related Bluetooth information is transmitted to a server to perform positioning algorithm calculation. And combining the obtained personnel positioning data with a map to finish personnel positioning management.
The accuracy of the Bluetooth beacon is 2-5 meters, and the problems of personnel position negligence, travel route withdrawal, wall penetration and the like appear in practical application, and are generally solved by empirically deploying the inductive increase density. But this leads to an increase in cost. Most manufacturers are guided to increase deployment density, and the deployment density is solved by continuous error correction when engineering algorithms are implemented. This can lead to a lack of reasonable assessment of errors in the congenital, by marking the beacon group and averaging. Imbalance of the number of beacon deployments from the expected error is not achieved.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a deployment method and a system for meeting error expectation in the positioning of Bluetooth beacon personnel, which have high precision and low deployment cost.
The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the following technical scheme:
a deployment method for Bluetooth beacon personnel positioning meeting error expectation comprises the following steps:
step 1, determining a Bluetooth beacon fitting error formula according to a path loss model, obtaining errors of distances corresponding to different signal strengths and actual distances according to the Bluetooth beacon fitting error formula, and obtaining a reliable range radius value of a Bluetooth beacon according to different positioning accuracies.
And 2, determining the expected coverage of the single point and the double points according to the expected error and the trusted range radius value of the Bluetooth beacon obtained in the step 1.
And 3, obtaining corresponding Bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage.
Step 4, obtaining a corresponding Bluetooth beacon number and the expected coverage according to the active area and the step 3, and determining the final coverage:
when (when)When in use, a linear deployment mode is adopted, the interval between every two Bluetooth beacons is that。
When 1.75When the two rows are deployed in an isosceles triangle mode, the transverse interval is thatLongitudinally spaced at。
When (when)When deployed in a regular triangle fashion, assume thatFor the arrangement, then:
；
number of deployment rows；
Wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.For the width of the active area,to deploy the number of rows.
Preferably: path loss model in step 1:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,representing the distance between the transmitting end and the receiving end,for the signal strength received by the receiving end,representing reception at a receiving end 1m from a transmitting endThe value of the sum of the values,the ambient decay factor is represented.
Preferably: in the step 1, the method for obtaining the error between the distance corresponding to different signal intensities and the actual distance according to the Bluetooth beacon fitting error formula comprises the following steps:
the mobile phone is used for respectively acquiring 5 Bluetooth beacons which are received by the mobile phone when the distance from the mobile phone 1m,2m and … … m is 1m,2m and … … m in an open environmentValue, average the acquired data of multiple times each time, 1mIs taken as A, at 6mIs obtained by substituting the signal intensity of the (C) signal into a path loss model formulaValues. From the calculated A andand calculating the error between the distance corresponding to the different signal intensities and the actual distance. And obtaining the trusted range radius value of the Bluetooth beacon according to different positioning accuracies.
Preferably: in step 3, the corresponding bluetooth beacon number and the expected method of coverage are obtained according to the expected coverage of single point and double points:
step 31, single point positioning, if square deployment is adopted, then:wherein, the method comprises the steps of, wherein,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon. If a regular trilateral deployment is adopted:wherein, the method comprises the steps of, wherein,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
Step 32, three-point positioning,wherein, the method comprises the steps of, wherein,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
Preferably: the linear deployment is carried out, and the transverse distance during deployment is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.Is the width of the active area.
Preferably: the isosceles triangle is deployed, and the transverse interval during deployment is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.Is the width of the active area.
Preferably: the deployment of the equilateral triangle is realized, and the transverse interval during deployment is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
The deployment system for meeting the error expectation by the Bluetooth beacon personnel positioning comprises a Bluetooth beacon fitting error formula unit, a signal strength distance error unit, a positioning accuracy Bluetooth beacon trusted radius unit, a single-double-point expected coverage surface determining unit, a Bluetooth beacon coverage surface expected unit, a coverage calculating unit and an output unit, wherein the deployment system comprises the Bluetooth beacon fitting error formula unit, the signal strength distance error unit, the positioning accuracy Bluetooth beacon trusted radius unit, the single-double-point expected coverage surface determining unit, the Bluetooth beacon coverage surface expected unit, the coverage calculating unit and the output unit, wherein the deployment system comprises the following components:
the Bluetooth beacon fitting error formula unit is used for determining a Bluetooth beacon fitting error formula according to the path loss model.
The signal intensity distance error unit is used for obtaining the errors of the distances corresponding to different signal intensities and the actual distances according to the Bluetooth beacon fitting error formula.
The positioning accuracy Bluetooth beacon trusted radius unit is used for obtaining the trusted range radius value of the Bluetooth beacon according to different positioning accuracy.
The single-point and double-point expected coverage determining unit is used for determining single-point and double-point expected coverage according to the expected error and the trusted range radius value of the Bluetooth beacon.
The bluetooth beacon coverage expectation unit is used for obtaining corresponding bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage.
The coverage calculation unit is used for determining a final coverage method according to the active area, the corresponding Bluetooth beacon number and the coverage desire.
The output unit is used for outputting a final coverage method.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the relation between the trusted error and the RSSI, the aim that the pursuit error of a user is small and the cost can be saved is fulfilled by optimizing most coverage areas of the deployment number.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a graph of expected error strength for a bluetooth beacon.
Fig. 3 is a graph of two bluetooth beacons intersecting (with expected errors).
Fig. 4 is a square deployment pattern profile (partial).
Fig. 5 is a positive trilateral deployment pattern profile (local).
Fig. 6 is a schematic square area diagram.
Fig. 7 is a schematic view of a regular hexagonal area.
Fig. 8 is a three-point positioning regular hexagonal deployment scenario.
Fig. 9 is a straight line deployment scenario.
Fig. 10 is an isosceles triangle deployment scenario.
Detailed Description
The present invention is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the invention and not limiting of its scope, and various equivalent modifications to the invention will fall within the scope of the appended claims to the skilled person after reading the invention.
A deployment method for bluetooth beacon personnel positioning meeting error expectation, as shown in fig. 1, comprising the following steps:
step 1, determining a Bluetooth beacon fitting error formula according to a path loss model, obtaining errors of distances corresponding to different signal strengths and actual distances according to the Bluetooth beacon fitting error formula, and obtaining a reliable range radius value of a Bluetooth beacon according to different positioning accuracies.
Path loss model:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,representing the distance between the transmitting end and the receiving end,for the signal strength received by the receiving end,representing reception at a receiving end 1m from a transmitting endValue ofThe ambient decay factor is represented.
The mobile phone is used for respectively acquiring 5 Bluetooth beacons which are received by the mobile phone when the distance from the mobile phone 1m,2m and … … m is 1m,2m and … … m in an open environmentValue, average the acquired data of multiple times each time, 1mIs taken as A, at 6mIs obtained by substituting the signal intensity of the (C) signal into a path loss model formulaValues. From the calculated A andand calculating the error between the distance corresponding to the different signal intensities and the actual distance (as shown in fig. 2). And obtaining the trusted range radius value of the Bluetooth beacon according to different positioning accuracies.
And 2, as shown in fig. 3, determining the expected coverage of the single point and the double points according to the expected error and the trusted range radius value of the Bluetooth beacon obtained in the step 1.
And 3, obtaining corresponding Bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage.
Assuming that the radius value of the trusted range of the bluetooth beacon is r (units: meters), the coverage area to be covered is sufficiently infinite. Deployment targets: so that the trusted range of bluetooth beacons completely covers the entire active area.
Step 31, single Point location
When the single point positioning scheme is applied, the random position of the active area is required to be covered by the trusted range of the Bluetooth beacon at least once.
Step 311, as shown in fig. 4, with square deployment, then:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
Step 312, as shown in FIG. 5, employs a positive trilateral deployment:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
When the space is arbitrarily large, the utilization area of each circle is as follows:
as shown in fig. 6: square area:。
as shown in fig. 7: hexagonal area:。
most factories adopt a square deployment mode, but according to the conclusion of fig. 6 and 7, when the active area is infinitely large, the deployment mode is deployed in a positive trilateral mode, and the utilization rate of the trusted range of the Bluetooth beacons is higher.
Step 32, three-point positioning
As shown in fig. 8: when the three-point positioning scheme is applied, any position of the active area is required to be covered by the trusted range of the Bluetooth beacon at least three times. Referring to the single point positioning normal trilateral deployment method of step 312, a normal trilateral deployment scheme in the case of three point positioning can be obtained:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
And 4, obtaining the corresponding Bluetooth beacon number and the coverage expectation according to the active area and the step 3, and determining a final coverage method.
Assuming the active area is longWide, wideIs a rectangular region of the panel. Aiming at rectangular areas with different widths, different deployment modes are needed, the scheme only considers a single-point positioning deployment scheme, and the following two situations are analyzed firstly:
step 41, as shown in fig. 9: the deployment is linear, and the transverse distance during deployment is (in the critical case, the boundary point of the trusted range of the Bluetooth beacon is on the boundary):
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.Is the width of the active area.
Step 42, as shown in FIG. 10: the isosceles triangle is deployed, and the transverse distance during deployment is (in the critical case, the boundary points on two sides of the trusted range of the Bluetooth beacon are on the boundary):
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.Is the width of the active area.
Step 43, deployment of equilateral triangles, wherein the transverse spacing during deployment is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the lateral spacing at the time of deployment,for the longitudinal spacing to be the same,trusted range radius value of bluetooth beacon.
Step 44, solving the equation by the linear deployment mode and the critical value of isosceles triangleIt can be seen thatIntegrating the deployment modes obtained in the steps 41, 42 and 43, and making the deployment modes long according to the active areaWide, wideIs deployed by the following method：
When (when)When in use, a linear deployment mode is adopted, the interval between every two Bluetooth beacons is that。
When 1.75When the two rows are deployed in an isosceles triangle mode, the transverse interval is thatLongitudinally spaced at。
When (when)When deployed in a regular triangle fashion, assume thatFor the arrangement, then:
；
number of deployment rows。
The deployment system for meeting the error expectation by the Bluetooth beacon personnel positioning comprises a Bluetooth beacon fitting error formula unit, a signal strength distance error unit, a positioning accuracy Bluetooth beacon trusted radius unit, a single-double-point expected coverage surface determining unit, a Bluetooth beacon coverage surface expected unit, a coverage calculating unit and an output unit, wherein the deployment system comprises the Bluetooth beacon fitting error formula unit, the signal strength distance error unit, the positioning accuracy Bluetooth beacon trusted radius unit, the single-double-point expected coverage surface determining unit, the Bluetooth beacon coverage surface expected unit, the coverage calculating unit and the output unit, wherein the deployment system comprises the following components:
the Bluetooth beacon fitting error formula unit is used for determining a Bluetooth beacon fitting error formula according to the path loss model.
The signal intensity distance error unit is used for obtaining the errors of the distances corresponding to different signal intensities and the actual distances according to the Bluetooth beacon fitting error formula.
The positioning accuracy Bluetooth beacon trusted radius unit is used for obtaining the trusted range radius value of the Bluetooth beacon according to different positioning accuracy.
The single-point and double-point expected coverage determining unit is used for determining single-point and double-point expected coverage according to the expected error and the trusted range radius value of the Bluetooth beacon.
The bluetooth beacon coverage expectation unit is used for obtaining corresponding bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage.
The coverage calculation unit is used for determining a final coverage method according to the active area, the corresponding Bluetooth beacon number and the coverage desire.
The output unit is used for outputting a final coverage method.
According to the invention, fewer trusted RSSI values are used for calculating the position through the target, the relation between the number of beacons and coverage is calculated through an algorithm, deployment is guided, the deployment number is reasonably designed by utilizing the characteristic of small error of the Bluetooth beacons in a short distance, and the deployment scheme is used for reducing the dependence on multiple beacons by more single-point beacons and double-point beacons.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (3)
1. The deployment method for the Bluetooth beacon personnel positioning meeting the error expectation is characterized by comprising the following steps:
step 1, determining a Bluetooth beacon fitting error formula according to a path loss model, obtaining errors of distances corresponding to different signal strengths and actual distances according to the Bluetooth beacon fitting error formula, and obtaining a reliable range radius value of a Bluetooth beacon according to different positioning accuracies;
path loss model:the method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Indicating the distance between the transmitting end and the receiving end, < >>Signal strength for the receiving end, +.>Representing +.>Value of->Then the environmental attenuation factor is represented; step 2, determining single-point and double-point expected coverage according to the expected error and the reliable range radius value of the Bluetooth beacon obtained in the step 1; step 3, obtaining corresponding Bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage; corresponding bluetooth beacon number and expected method of coverage according to single point and double point expected coverage: step 31, single point positioning, if square deployment is adopted, then: />The method comprises the steps of carrying out a first treatment on the surface of the If a regular trilateral deployment is adopted:the method comprises the steps of carrying out a first treatment on the surface of the Step 32, three-point positioning, namely->The method comprises the steps of carrying out a first treatment on the surface of the Step 4, obtaining the corresponding Bluetooth beacon number and coverage expectation confirmation according to the active area and the step 3Final coverage is defined: when->In the case of linear deployment, the interval between every two Bluetooth beacons is +.>The method comprises the steps of carrying out a first treatment on the surface of the The linear deployment is carried out, and the transverse distance during deployment is as follows:the method comprises the steps of carrying out a first treatment on the surface of the When->In the process, two rows are deployed in an isosceles triangle mode, and the transverse interval is +.>Longitudinal spacing of->The method comprises the steps of carrying out a first treatment on the surface of the The isosceles triangle is deployed, and the transverse interval during deployment is as follows: />The method comprises the steps of carrying out a first treatment on the surface of the When->When deployed in a regular triangle fashion, assume +.>For the deployment row number, then: />The method comprises the steps of carrying out a first treatment on the surface of the Deployment line number->The method comprises the steps of carrying out a first treatment on the surface of the The deployment of the equilateral triangle is realized, and the transverse interval during deployment is as follows: />The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>For lateral spacing at deployment, +.>For longitudinal distance>Trusted range radius value for bluetooth beacon, +.>Is the width of the active area.
2. The deployment method for bluetooth beacon personnel location satisfying error expectations of claim 1, wherein: in the step 1, the method for obtaining the error between the distance corresponding to different signal intensities and the actual distance according to the Bluetooth beacon fitting error formula comprises the following steps:
the mobile phone is used for respectively acquiring 5 Bluetooth beacons which are received by the mobile phone when the distance from the mobile phone 1m,2m and … … m is 1m,2m and … … m in an open environmentValues, averaged over several acquisitions at a time, 1m +.>Is A, 6m +.>The signal intensity of (2) is substituted into a path loss model formula to obtain +.>A value; according to the calculated->Calculating the value of the distance corresponding to different signal intensities and the actual distanceError; and obtaining the trusted range radius value of the Bluetooth beacon according to different positioning accuracies.
3. A deployment system for bluetooth beacon personnel location satisfying error expectations, characterized in that: the deployment method for meeting error expectation by bluetooth beacon personnel positioning according to claim 1, comprising a bluetooth beacon fitting error formula unit, a signal strength distance error unit, a positioning accuracy bluetooth beacon trusted radius unit, a single-double-point expected coverage determination unit, a bluetooth beacon coverage expectation unit, a coverage calculation unit and an output unit, wherein:
the Bluetooth beacon fitting error formula unit is used for determining a Bluetooth beacon fitting error formula according to the path loss model;
the signal intensity distance error unit is used for obtaining the errors of the distances corresponding to different signal intensities and the actual distances according to a Bluetooth beacon fitting error formula;
the positioning accuracy Bluetooth beacon trusted radius unit is used for obtaining a trusted range radius value of the Bluetooth beacon according to different positioning accuracy;
the single-point and double-point expected coverage determining unit is used for determining single-point and double-point expected coverage according to the expected error and the trusted range radius value of the Bluetooth beacon;
the Bluetooth beacon coverage expected unit is used for obtaining corresponding Bluetooth beacon numbers and coverage expectations according to the single-point and double-point expected coverage;
the coverage calculation unit is used for determining a final coverage method according to the active area and the corresponding Bluetooth beacon number and the coverage expectation;
the output unit is used for outputting a final coverage method.
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