CN107979818B - Method for processing initial data of wireless fingerprint database - Google Patents
Method for processing initial data of wireless fingerprint database Download PDFInfo
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- CN107979818B CN107979818B CN201711219501.9A CN201711219501A CN107979818B CN 107979818 B CN107979818 B CN 107979818B CN 201711219501 A CN201711219501 A CN 201711219501A CN 107979818 B CN107979818 B CN 107979818B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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Abstract
The invention relates to a database updating technology in the technical field of information, in particular to a method for processing initial data of a wireless fingerprint database. The method mainly solves the problem of screening the positioning base stations in the horizontal and vertical directions, simplifies the calculation process and saves the human resources and the system overhead. The method mainly comprises the steps that an acquirer acquires original wireless signal data at a known acquisition point or an acquisition line, the wireless signal data at least comprise acquisition position information and all wireless signal intensity acquired at the current position, and an initial wireless signal database is established, wherein the wireless signal database comprises IDs of all acquisition positions and all wireless signal intensity data acquired at the acquisition positions; then, the contents in the wireless fingerprint database are screened to obtain the required fingerprint data. The method is mainly used for screening the fingerprints in the acquired wireless fingerprint database when the initial wireless fingerprint database is established.
Description
Technical Field
The invention relates to a database updating technology in the technical field of information, in particular to a method for processing initial data of a wireless fingerprint database.
Background
With the rapid development of scientific technology, the popularity of mobile internet and intelligent devices is higher and higher, and the demand of location-based services is also higher and higher. In the prior art, the global navigation satellite system provides a good positioning service outdoors, and has the advantages of high positioning precision and wide application range. However, in an indoor environment, since the indoor environment is relatively complex and there are many factors affecting the strength of wireless signals, the signal attenuation of the global navigation satellite system in the indoor environment is serious, and the related positioning requirements are far from being met, so how to improve the accuracy of indoor positioning becomes an important research topic in the present society.
In the prior art, the following base station building for indoor positioning exists, and the base station building is respectively used for mobile phone base station positioning service, indoor WIFI positioning service and the like. Because of the characteristics of low price, high positioning accuracy, easy deployment and the like, indoor wireless WIFI becomes one of the most widely used positioning schemes, the positioning of the wireless WIFI is generally divided into two stages, namely the establishment of a fingerprint library and the online positioning, and the position relationship is determined according to the wireless signal strength of a user after connection is established and the position condition of the user, so that the positioning work is completed. The establishment of the fingerprint database comprises the following steps: the method comprises the steps of establishing an initial off-line database and an on-line updating database, wherein an acquirer acquires related wireless signals, then establishes the acquired wireless signals into an initial wireless signal database, and after the establishment of the signal database is completed, firstly, which base stations are suitable for positioning are determined, and how to screen the suitable positioning base stations becomes a technical difficulty in the prior art.
In order to solve the above problems, chinese patent No. cn201710160759.x discloses a method and an apparatus for establishing a fingerprint database based on WIFI indoor positioning in 2017, 08 and 22, which mainly describes a method for establishing a wireless fingerprint database, and S1 selects a wireless access point without establishing a fingerprint database; s2 randomly sampling a plurality of sampling points for the selected wireless access point in the target area; s3, establishing a signal intensity distribution model of each point according to the Gaussian process of the sampling point, and completing the establishment of a fingerprint database of the wireless access point in the target area; s4, judging whether all indoor wireless access points establish corresponding fingerprint libraries, if so, completing the establishment of the target area fingerprint library; otherwise, it jumps to step S1. By adopting the technical scheme, although the screening is carried out on the existing initial wireless base station, the screening is only limited to the position positioning in the horizontal direction, and the selection of the positioning base station in the vertical direction is not involved. The problems of low positioning precision, error position identification and the like can be caused.
Disclosure of Invention
The invention aims to provide a method for processing initial data of a wireless fingerprint database, which meets the requirements of establishing an initial wireless signal database and carrying out screening work of a positioning base station on the wireless database so as to improve the accurate positioning of the wireless positioning base station in the horizontal and vertical directions and solve the problems of inaccurate positioning and the like caused by the inaccuracy of the fingerprint database.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a processing method of initial data of a wireless fingerprint database comprises the following steps:
s1: an acquirer acquires original wireless signal data at a known acquisition point or an acquisition line, the wireless signal data at least comprises acquisition position information and all wireless signal intensity acquired at the current position, and an initial wireless signal database is established, and the wireless signal database comprises IDs of all acquisition positions and all wireless signal intensity data acquired at the acquisition positions;
s2: removing all fingerprints with the collected original wireless signal intensity smaller than-90 dbm;
s3: counting the number of the reserved wireless signal strengths and the number of all wireless base stations, and calculating the number of average signal strengths, namely the number of average wireless signals which can be received by each acquisition point;
s4, multiplying the average signal intensity number in the step S3 by β to determine the number of wireless base stations suitable for positioning, wherein β is an adjusting parameter;
s5, dividing the signal intensity range into a plurality of equal parts, taking the intermediate value of each equal part, finding the fingerprint data of the position to be acquired in step S4, counting the number of base station signals in the equal parts, calculating the wireless signal intensity parameters of the base station at the acquisition point, calculating the wireless signal intensity parameters of the same base station at different acquisition points in the vertical direction according to the method, wherein the absolute value of the difference between any two groups of wireless signal intensity parameters of the positioning base station is larger than the threshold α, the threshold value alpha is used for evaluating the positioning intensity of the wireless base station in the vertical direction, and the value range is [5dbm, 10dbm ];
s6: finding out the fingerprint data of the position needing to be collected in step S4, selecting a plurality of collecting points with inconsistent signal intensity in the horizontal direction, calculating the mean value of the wireless signal intensity of the base station in the horizontal direction, wherein the mean value is used for calculating the variance of the wireless signal intensity of the wireless base station in the horizontal direction, and the positioning base station meets the condition that the variance is less than a threshold varthe。
S7: the screened wireless base station signals can be used for positioning in the horizontal direction or the vertical direction.
By adopting the technical scheme, the surrounding situation and the related terrain are considered firstly, the acquisition points and the acquisition lines are determined preliminarily, after the acquisition lines are determined, the acquirers acquire the related data through professional equipment to obtain the initial data of the wireless base station, the initial data should contain the position information of the related acquisition points and all the wireless signal intensities acquired at the specific acquisition points, and a wireless signal database is established. The method can establish a relatively comprehensive wireless signal database, can effectively reduce the waste of human resources, and after the wireless signal acquisition is completed, the comprehensive wireless signal database is established, when the wireless signal is less than-90 dbm, the strength of the wireless signal is very weak, and the wireless signal can be basically excluded from the range of the positioning base station, so that the wireless signal strength with the wireless signal strength less than-90 dbm is deleted. Interference for less than-90 dbm radio signal strength location can be reduced by this step. Then, average wireless signals are calculated, the number of wireless signal strength which can be covered by each acquisition point on average is obtained, wireless base stations which can be used for positioning are screened out by utilizing adjustment parameters, the base stations which can be really used for positioning can be guaranteed to accurately complete positioning work, the wireless signal strength range is divided into a plurality of equal parts, and specific numerical values of the wireless signal strength falling in the vertical direction are acquired to judge whether a certain base station can be used for positioning in the vertical direction, so that the problem that the positioning of the wireless base station in the vertical direction cannot be judged in the prior art is solved. The wireless signal strength can be calculated according to the wireless signal attenuation model when no obstacle exists in the horizontal direction, under the condition that the obstacle exists, the wireless base station for positioning needs to adopt different wireless signal strengths in the horizontal direction to calculate the mean value which can be used for positioning to obtain the wireless signal strength variance, and whether the base station can be used for positioning work is judged, so that the problems that the positioning calculation period in the horizontal direction is long, the formula is complex and the like in the prior art are solved.
Further, in step S1, the wireless signal strength of the non-interference source around the acquisition point is calculated according to the wireless signal attenuation model, and a position located therein is calculated as another effective acquisition point.
Further, the number of average intensities calculated in step S3 is represented as:
where M denotes the number of reserved radio signal strengths and N denotes the number of all radio base stations.
further, in step S4, the adjustment coefficient β is a value in the range [0,1] according to the actual situation, and is expressed as m · β, and the number of base stations used for positioning needs to satisfy the requirement that the signal strength is greater than m · β.
Further, the wireless signal strength parameters of different acquisition points in the vertical direction in step S5 are represented as:
s represents a certain base station, f represents an acquisition point in the vertical direction, b1-bnIs a median value of a number of packets, a1-anWhich is expressed as the number of radio signals in a number of packets for the base station S.
Further, the average value of the wireless signal strength of the base station in the horizontal direction in step S6 is represented as:
the wireless signal strength variance is expressed as:
s represents a certain base station, g represents an acquisition point in the horizontal direction, and t represents the number of signal intensities of the base station S in the horizontal direction.
Further, a threshold value vartheUsed for judging the positioning strength of the wireless base station in the horizontal direction, counting the variance of the wireless signal strength of all the base stations in all the vertical directions, and calculating the average value varmean，varthe＝varmeanLambda, where lambda is a regulating parameter,the value range is [0,1]]。
By adopting the technical scheme, wireless signals are collected from each indoor wireless access point, wireless fingerprints of relevant positions are obtained, an initial wireless database is established, relevant mean value operation is carried out according to the collected wireless signal strength, average signal strength is obtained, wireless base stations which can be used for positioning are screened out by utilizing the average wireless signal strength and a threshold value, the calculated amount of wireless signal screening can be simplified, the resource waste is reduced, the positioning strength of the wireless signal base stations in the horizontal direction and the vertical direction is obtained, and meanwhile, the positioning precision can be greatly improved.
Drawings
Fig. 1 is a schematic flow chart of an initial data processing method based on a wireless fingerprint database according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, which is a schematic flow chart of the method for processing initial data of a wireless fingerprint database of the present invention, it can be seen from the diagram that, firstly, a suitable acquisition point and an acquisition route should be selected in S1, which mainly relates to places where there are interferents, such as strong magnetic interference, building interference, etc., after the acquisition route is selected, all wireless signal intensities that can be received on the acquisition point or the acquisition route are acquired by using professional acquisition equipment, and certainly, when there is no interference around the acquisition point or the acquisition route, the acquisition of data can be completed by using a wireless signal attenuation model, and the acquired data is established as an initial fingerprint database; the fingerprint database described herein is: after the initial fingerprint database is established, the wireless signal strength with the wireless signal strength smaller than-90 dbm collected at the collection point or on the collection line is rejected in S2, because the wireless signal strength is very weak and normal connection cannot be guaranteed when the wireless signal strength is smaller than-90 dbm, the wireless signal strength database cannot be suitable for positioning.
As shown in S3 in fig. 1, after the removed wireless signal strength is less than-90 dbm, the number M of the remaining wireless signal strengths is counted, and the number N of all the wireless base stations is counted, so as to calculate the average strength number:
obtaining average intensity number, i.e. average wireless signal number capable of being received by each acquisition point, utilizing the calculated average intensity number to multiply β, i.e. m.beta, the base station for positioning needs to meet the condition that the signal intensity number is greater than m.beta, β is an adjusting parameter, and β can be in [0,1] according to the actual condition]when β is equal to 1, m · β is equal to m, that is, the number of base stations used for positioning needs to satisfy that the number of wireless signal strengths is greater than the average value, and the wireless base stations smaller than the average number of wireless signal strengths will be excluded, which is often the case where there are many wireless base stations and is used for selecting the optimal positioning base station, when β is equal to 0.5, m · β is equal to m/2, that is, the number of base stations used for positioning needs to satisfy that the number of wireless signal strengths is greater than half of the average value, there are few wireless signal base stations screened, which is often the case where the number of positioning base stations is general, and some of them are good, and when β is equal to 0, m · β is equal to 0, that is, the number of base stations used for positioning needs to satisfy that the number of wireless signal strengths is greater than zero, that is, as long as the base stations capable of completing signal connection can be used for positioning, this is the case where 0 or 1 belongs to the extreme of positioning base stations, and the acquirer can adjust the value of β set when the initial database is needed.
After the preliminary screening of the first half of the base station is completed, the base station positioned near the acquisition point or the acquisition line can meet the positioning requirement, and on the basis of the first half, the positioning of the wireless base station in the vertical direction is further perfected.
as shown in fig. 1, the screening of the vertical base station expressed in S5 needs to complete positioning in the vertical direction, identify a corresponding height, and needs to locate the base station to satisfy that an absolute value of a difference between any two adjacent sets of radio signal strength parameters is greater than a threshold value α, α is mainly used for evaluating the positioning strength of the radio signal base station in the vertical direction, and has a value range of [5dbm-10dbm ], divide the radio signal strength into a plurality of equal parts, i.e., [ -30dbm, -40dbm ], [ -40dbm, -50dbm ], [ -50dbm, -60dbm ], [ -60dbm, -70dbm, -80dbm ], [ -80dbm, -90dbm ], whose central values are-35 dbm, -45dbm, -55dbm, -65dbm, -75dbm, -3985 dbm in order, according to the screened data of the number of S completed screening, the fingerprint information found by the screening in S56 is used for calculating a statistical distribution of the base station in the vertical direction, and the base station finds out a, and calculates a statistical distribution range of the vertical base station, wherein the vertical distribution range is represented by 3932, and the statistical distribution of the base station is represented by a, and the total number of the vertical distribution of the base station, and the vertical direction, and the base station is represented by 35 a, and the total number of S, represented by:
the signal strength distribution parameter of the base station S at the acquisition points f1, f2, f3 in all vertical directions is αs_f1,αs_f2,αs_f3if the absolute value of the difference between f1 and f2 is greater than α, it indicates that the bs S can be used to identify the acquisition point in the vertical direction, and the same reasoning can be inferred to be the wireless signal strength [ -30dbm, -90dbm]Dividing into several equal parts, respectively taking intermediate values of several equal parts, and calculating wireless signal strength parameter of base station at acquisition point, i.e. calculating wireless signal strength parameter of base station at acquisition point
according to the method, wireless signal strength parameters of different acquisition points of the same base station in the vertical direction are calculated, the positioning base station meets the condition that the absolute value of the difference between any two adjacent groups of wireless signal strength parameters is larger than the threshold value α and can be used for the acquisition points of the equipment in the vertical direction, wherein S represents a certain base station, f represents the acquisition points in the vertical direction, b represents the acquisition points in the vertical direction1-bnIs the intermediate value of a number of packets,a1-anwhich is expressed as the number of radio signals in a number of packets for the base station S.
Screening the base stations in the horizontal direction expressed in the S6, finding fingerprint data of a position to be acquired, selecting a plurality of acquisition points in the horizontal direction with inconsistent signal intensity, and calculating the average value of wireless signals of the base stations on the acquisition points in the horizontal direction, namely:
wherein S is a base station, g is an acquisition point in the horizontal direction, and t is the number of signal intensities of the base station S in the horizontal direction. Calculating the variance of the wireless signal by the mean of the wireless signal as:
calculating the variance of the wireless signal, and meeting the requirement that the variance of the wireless signal of the horizontal positioning base station is smaller than a threshold value vartheThreshold value vartheUsed for judging the positioning strength of the wireless base station in the horizontal direction, counting the variance of the wireless signal strength of all the base stations in all the vertical directions, and calculating the average value varmean，varthe＝carmeanLambda is a regulating parameter with a value range of [0, 1%]。
As shown in fig. 1, after completing the data screening through S1-S6, the wireless base stations that can be used for identifying the vertical acquisition point and the horizontal positioning base stations are separated, and all the screened wireless base stations are included in the initial wireless fingerprint database, thereby completing the establishment of the fingerprint database.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any variations, equivalent alterations, modifications and the like within the spirit and principle of the invention are intended to be covered by the present invention.
Claims (6)
1. A method for processing initial data of a wireless fingerprint database is characterized by comprising the following steps:
s1: an acquirer acquires original wireless signal data at a known acquisition point or an acquisition line, wherein the wireless signal data at least comprises acquisition position information and all wireless signal intensity acquired at the current position, and establishes an initial wireless signal database, and the wireless signal database comprises IDs of all acquisition positions and all wireless signal intensity data acquired at the acquisition positions;
s2: removing all fingerprints with the collected original wireless signal intensity smaller than-90 dbm;
s3: counting the number of the reserved wireless signal strengths and the number of all wireless base stations, and calculating the number of average signal strengths, namely the number of average wireless signals which can be received by each acquisition point;
s4, multiplying the average signal intensity number in the step S3 by beta to determine the number of wireless base stations which are suitable for positioning, wherein β is an adjusting parameter;
s5, dividing the signal intensity range into a plurality of equal parts, taking the middle value of each equal part, finding out the fingerprint data of the position to be acquired in step S4, counting the number of base station signals in the equal parts, calculating the wireless signal intensity parameter of the base station at the acquisition point, calculating the wireless signal intensity parameter of the same base station at different acquisition points in the vertical direction according to the method, wherein the absolute value of the difference between any two groups of wireless signal intensity parameters of the positioning base station is larger than a threshold α, the threshold value alpha is used for evaluating the positioning intensity of the wireless base station in the vertical direction, the value range is [5dbm, 10dbm ], and the wireless signal intensity parameters of different acquisition points in the vertical direction are expressed as:
s represents a certain base station, f represents an acquisition point in the vertical direction, b1-bnIs a median value of a number of packets, a1-anRepresenting the number of wireless signals in a plurality of groups for the base station S;
s6: finding out the fingerprint data of the position to be collected in step S4, selecting several horizontal collecting points with inconsistent signal strength, and calculating the basisThe mean value of the wireless signal intensity of the station in the horizontal direction is used for calculating the variance of the wireless signal intensity of the wireless base station in the horizontal direction, and the positioning base station meets the condition that the variance is less than a threshold value varthe；
S7: the screened wireless base station signals can be used for positioning in the horizontal direction or the vertical direction.
2. The method for processing the initial data of the wireless fingerprint database according to claim 1, wherein: in step S1, the wireless signal strength when there is no interference source around the acquisition point is calculated according to the wireless signal attenuation model, and a position located therein is calculated as another effective acquisition point.
3. The method for processing the initial data of the wireless fingerprint database according to claim 2, wherein: the number of calculated average intensities in step S3 is represented as: where M denotes the number of reserved radio signal strengths and N denotes the number of all radio base stations.
4. the method for processing the initial data of the wireless fingerprint database according to claim 3, wherein the adjustment parameter β is represented as m · β in a range [0,1] according to an actual situation in step S4, and the number of base stations used for positioning that need to satisfy the signal strength is greater than m · β.
5. The method for processing the initial data of the wireless fingerprint database according to claim 4, wherein: the average value of the wireless signal strength of the base station in the horizontal direction in step S6 is represented as:
the wireless signal strength variance is expressed as:
s represents a certain base station, g represents an acquisition point in the horizontal direction, t represents the number of wireless signals of the acquisition point in the horizontal direction acquired by the base station S, rssi represents the wireless signal intensity value of the acquisition point in the horizontal direction acquired by the base station S, i represents the serial number of the wireless signals of the acquisition point in the horizontal direction acquired by the base station S, and i belongs to [1, t ].
6. The method for processing the initial data of the wireless fingerprint database according to claim 5, wherein: the threshold value vartheUsed for judging the positioning strength of the wireless base station in the horizontal direction, counting the variance of the wireless signal strength of all the base stations in different horizontal directions, and calculating the average value varmean，varthe＝varmeanLambda is a regulating parameter with a value range of [0, 1%]。
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916821A (en) * | 2014-04-11 | 2014-07-09 | 北京工业大学 | Floor distinguishing method based on RSSI difference between floors |
| CN104703143A (en) * | 2015-03-18 | 2015-06-10 | 北京理工大学 | Indoor positioning method based on WIFI signal strength |
| CN105338498A (en) * | 2015-09-29 | 2016-02-17 | 北京航空航天大学 | Construction method for fingerprint database in WiFi indoor positioning system |
| CN106792561A (en) * | 2017-01-19 | 2017-05-31 | 上海斐讯数据通信技术有限公司 | A kind of wireless fingerprint positioning method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916821A (en) * | 2014-04-11 | 2014-07-09 | 北京工业大学 | Floor distinguishing method based on RSSI difference between floors |
| CN104703143A (en) * | 2015-03-18 | 2015-06-10 | 北京理工大学 | Indoor positioning method based on WIFI signal strength |
| CN105338498A (en) * | 2015-09-29 | 2016-02-17 | 北京航空航天大学 | Construction method for fingerprint database in WiFi indoor positioning system |
| CN106792561A (en) * | 2017-01-19 | 2017-05-31 | 上海斐讯数据通信技术有限公司 | A kind of wireless fingerprint positioning method and system |
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