CN104820935A - Guide method for shopping in mall based on indoor positioning - Google Patents

Guide method for shopping in mall based on indoor positioning Download PDF

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Publication number
CN104820935A
CN104820935A CN201510117930.XA CN201510117930A CN104820935A CN 104820935 A CN104820935 A CN 104820935A CN 201510117930 A CN201510117930 A CN 201510117930A CN 104820935 A CN104820935 A CN 104820935A
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market
mobile phone
quick response
response code
shopping
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陈远春
张双林
秦智康
陈呈举
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Abstract

The invention discloses a guide system for shopping in a mall based on WiFi (wireless fdelity) indoor positioning. The guide system comprises three parts, namely an indoor wireless WiFi positioning part, a part for developing guide software APP on an Andriod mobile phone for shopping in the mall, and a part for establishing a mall database server. WiFi and two-dimensional codes are cooperatively adopted for indoor positioning, and signal strength based on RSS is adopted to perform indoor positioning; the database is established to provide background processing on mass information of mall goods and big data, so that information transmission between a shopping-guide terminal and a host-side terminal is completed to realize final positioning. The guide system has the benefits that the positioning adopts a wireless mode and is accurate and convenient, and the system efficiency is high.

Description

The market shopping bootstrap technique of indoor positioning
Technical field
The invention belongs to wireless location technology field, relate to the market shopping bootstrap technique of indoor positioning.
Background technology
Along with improving constantly of living standards of the people, for meeting consumers in general's shopping need, chain-supermarket, the shopping forms such as convenience store are more and more subject to consumers in general's favor.But in supermarket shopping, in large supermarket particularly large in scale, wide in variety, client can not find the position for the commodity bought often, Commdity advertisement and the information of discount of understanding supermarket are also very inconvenient, directly have influence on customer purchase temperament and interest and the supermarket sales volume.In addition, it is also a large bottleneck that cashier is checked out, and whenever Saturday, day, the long queue at cashier place also allows people hang back really.Therefore the market shopping guidance system designed is exactly to change this present situation, make client can voluntarily inquiring information of goods and position, scanning for shopping product bar code, graphical guiding shopping, greatly saves shopping-time and clearing time, really allows consumer realize the facility of supermarket shopping.
With regard to current status both at home and abroad, existing each large e-commerce website is on line flourish, and consumer can enter store rapidly by shopping online, buys the commodity oneself liked.But under line by the combination that market shopping guidance system and solid shop/brick and mortar store are done shopping, all or the starting stage, correlative study is less or immature in research both at home and abroad, and come into operation and promote weary especially old denumerable.Following world will be smart world, and therefore this field development prospect is huge, and devises this system.In conjunction with the present intelligent machine platform mainly iOS system of apple and the android system of Google.According to the statistics of market survey company KantarWorldpanelComTech, three months 8 to October in 2013, the share of Android occupied by Chinese market is 78.1%, comparatively increase by 8.4% same period last year, and its occupation rate is still in ascendant trend, therefore we have selected this development platform of Android phone operating system.Design for the current market demand and experience excellent solid shop/brick and mortar store shopping guidance system, develop a mobile phone solid shop/brick and mortar store client software based on Android operation system and arise at the historic moment in this background exactly.
Summary of the invention
The object of the present invention is to provide the market shopping guidance system based on WiFi indoor positioning, solving existing store guidance system mainly by indicating, causing location ambiguity inconvenience, the inefficient problem of guidance system.
The technical solution adopted in the present invention is carried out according to following steps:
Step 1: user downloads the map file in current market in advance on mobile phone;
Market Region dividing is the length of side by step 2: arrange wireless router in market is the square net of 200 meters, and wireless router is placed on square corner;
Step 3: the SSID arranging wireless router, SSID are " market name+router-number ", open wireless route WIFI function;
Step 4: arrange a Web server in market, Web server has WIFI transmission-receiving function, is used for intercepting the connection request of mobile phone terminal, deposits wireless router concrete positional information of placing in market in the database of Web server;
Step 5: when user needs indoor positioning, WIFI function opened by mobile phone, and the SSID of around wireless router and its WIFI signal intensity are sent to Web server by WIFI wireless mode;
Step 6:Web server retrieves the positional information that router corresponding to SSID is placed in a database after receiving the Location Request of mobile phone, in conjunction with the signal intensity of each position, calculate the positional information residing for mobile phone terminal, and return to mobile phone, demonstrate on the map of market after mobile phone reception information and mark the position at the current place of user, completing position fixing process.
Further, described Web server adopts the erection of sq1 server2008 database software, is configured to use ICP/IP protocol to intercept the connection request of mobile phone terminal.
Further, client end AP P by the wireless routing signal near scanning relatively, and can obtain client position in conjunction with Web server database information in real time, and precision is 3 ~ 4 meters.
Further, the system of described mobile phone adopts android system.
Further, described position fixing process is as follows: set up electromagnetic power path loss model
P ( d ) = P ( d 0 ) - 10 alg ( d d 0 ) - ζ ( dB ) - - - ( 1 )
Wherein, P (d) is the function of acknowledge(ment) signal intensity and distance; d 0it is reference distance; D is actual distance; α is path loss index, and show the speed that path loss increases with distance, it depends on specific communication environments; ζ is the shadowing factor in units of dB; The coordinate of definition mobile phone (MS) is (x, y), and the coordinate of base station (BS) is (x i, y i), then the Euclidean distance between target and base station is d i,
d j = ( x j - x ) 2 + ( y j - y ) 2 - - - ( 2 )
Suppose that MS can be recorded by n BS, then can list n range equation according to formula (2), in the corridor environment of one dimension, horizontal ordinate and the ordinate of MS with BS must have one group identical, so the Nonlinear System of Equations that n group data are listed is quadratic equation with one unknown group, have solution when n is greater than and equals 2, namely 2 BS of conllinear measure the signal of same MS, just can estimate the coordinate of MS, d in formula (2) can be obtained by formula (1) ibe estimated as
d ~ i = d 0 · 1 0 p w ( d i ) - p ( d 0 ) + ζ - 10 a - - - ( 3 )
Carry out Taylor series expansion and linearization to equation line thus, iterated revision estimated position after use least square method calculating deviation value, if deviation value is less than default precision threshold value, then iteration terminates.
Another kind of method of the present invention, carry out according to following steps:
Step 1: user downloads the map file in current market in advance on mobile phone;
Step 2: market map partitioning coordinate system is that on map, there is a corresponding two-dimensional coordinate everywhere;
Step 3: regional puts up Quick Response Code mark in market, Quick Response Code mark is containing position coordinates, and position coordinates is corresponding with the coordinate system of market map, and the location coordinate information that each Quick Response Code contains all can show in the coordinate system of market map;
Step 4: user, before Quick Response Code mark, is scanned Quick Response Code mark with mobile phone;
Step 5: the current two-dimension coordinate that scanning Quick Response Code obtains, coordinate shows by the market map in mobile phone, completes position fixing process.
Further, with most northwest corner, market for true origin (0,0), in units of rice, east is x-axis positive dirction, and south is y-axis positive dirction.Put up Quick Response Code in some full position in market, the position coordinates supposing to put up Quick Response Code is (x1, y1) (x2, y2) (x3, y3) ... (xn, yn) n is the total number putting up Quick Response Code.Then put up at position (xi, yi) place the raw information of Quick Response Code is " store name, xi, yi, nearest shop (or place) name ", parses the coordinate of current location after mobile telephone scanning Quick Response Code.
Further, mobile phone is as client, and the APP software of installation completes scanning Quick Response Code and obtains positional information and commodity ID.
The invention has the beneficial effects as follows that location adopts wireless mode, accurately and convenient, system effectiveness is high.
Accompanying drawing explanation
Fig. 1 is the shopping guidance system structural representation that the present invention is based on WIFI wireless router;
Fig. 2 is the shopping guidance system structural representation that the present invention is based on Quick Response Code mark;
Fig. 3 is the positioning flow schematic diagram of the shopping guidance system of wireless router of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Owing to needing behind location positioning result to be marked out on map picture come, so user need (positional information that following two schemes return be actually the picture pixels coordinate of map picture by the map file in the current market of prompting download before location.In addition, because the map file downloading current market need be which market what to judge the current place of user be, this operation is realized by the fuzzy positioning function of base station, because market is general larger, architecture enough, have several markets within the scope of architecture, user can select the market at your place according to prompting) location is divided into two schemes:
Scheme one: as shown in Figure 1, for the present invention is based on the system connected mode of wireless router, is made up of mobile phone terminal, web server, wireless router.Wireless router adopts same size, 200 meters, interval (being namely placed on the summit place that the length of side is the square net of 200 meters) is placed in market, the SSID of wireless router is unified to be set to " numbering of market name+router " (most upper left corner router-number is 1, increase progressively to the right, then enter a new line to the rightest).Web server adopts the erection of sq1 server2008 database software, is configured to use ICP/IP protocol to intercept the connection request of mobile phone terminal, deposits the positional information of wireless router in database.If user needs indoor positioning service, the SSID of the wifi signal intensity of surrounding router focus and the focus of correspondence is sent to server by mobile phone terminal, server retrieves the positional information that router corresponding to SSID is placed in a database after receiving Location Request, in conjunction with the signal intensity of each position, calculate the positional information residing for mobile phone terminal, and returning to mobile phone terminal, indoor map shows and has marked the position at the current place of user by mobile phone.
Scheme two: be illustrated in figure 2 the system connected mode that the present invention is based on Quick Response Code mark.This scheme is auxiliary positioning scheme.Be made up of mobile phone terminal.In market, preset a coordinate system, conveniently state, suppose that in units of rice, east is x-axis positive dirction, and south is y-axis positive dirction with most northwest corner, market for true origin (0,0).Put up Quick Response Code in some full position in market, the position coordinates supposing to put up Quick Response Code is (x1, y1) (x2, y2) (x3, y3) ... (xn, yn) n is the total number putting up Quick Response Code.Then at position (xi, yi) raw information of Quick Response Code that place puts up is " store name; xi; yi; nearest shop (or place) name ", parse the coordinate of current location after mobile telephone scanning Quick Response Code, mark out after proportional zoom process in map file accordingly and show.
Scheme 1 and scheme 2 can be combined, when a scheme goes wrong, not affect location so wherein.And can allow client's regioselective mode easily.
Wireless routing array and server rely on the existing framework in market, avoid the too high cost of the system of building and drop into.Computer software is divided into back-stage management part and trade company's administrative section.Back-stage management part can complete merchant information management and monitoring; And trade company's administrative section easily to Input of Data market planimetric map, reference point and commodity essential information (containing positional information), and can generate the Quick Response Code comprising positional information and commodity ID.
Client end AP P is the pith of whole system, can complete scanning Quick Response Code and obtain positional information and commodity ID, connects market database and obtains detailed merchandise news, user's evaluation and complete the functions such as feedback.More crucial, APP by the wireless routing signal near scanning relatively, and can obtain client position in conjunction with database information in real time, and precision is about 3 ~ 4 meters.Client end AP P completes purchase experiences feedback simultaneously, and feedback information is preserved on the server.
The Location Request of database service end primary responsibility location Calculation and response terminal.Consider based on load balancing, the Web server of response position request is separated with the location-server running location Calculation, and data exchange ways adopts the data exchange ways that client is identical with Web server.Client depends on concrete object, and primary responsibility gathers the wireless signal strength of periphery AP, and submits signal characteristic to service end, and server uses the signal characteristic of client collection to position calculating, obtains the location estimation of mobile terminal.Client communicates with service end accurate http protocol, programming is convenient, and extensibility is good, and client-side program function can expand as required.
Simultaneously, to the accurate location of client in megastore, we adopt that various ways is collaborative to carry out, we adopt high-precision WiFi indoor positioning to have technology by oneself on the one hand, namely in real time more accurate wireless location is carried out to client by the power of WiFi wireless signal, also adopt on the other hand the mode of Quick Response Code scanning can colocated, this mode be simply accurate.Both combine, and more perfectly can solve the wireless location to client.
Market shopping based on android system guides the development and Design of APP; The exploitation of market APP is one of core of native system design, and a for the exploitation solid shop/brick and mortar store market shopping based on Android phone is guided software App by native system, after this App of mobile phone-downloaded, just can obtain the relevant information of this market and its all commodity.Client can see the plane map in market and the position residing for oneself.The price of commodity, position, the whether information such as fast-selling can be obtained by search commercial articles.The route guidance figure that current location leads to product locations can be obtained.The information comparison of the different commodity in different shop can be linked, can get a good buy by shopping around with reference to the evaluation of other clients.
The design of database server; Write server software management server end SQL database, send order by client software to server, for article item interpolation, editor or deletion price, position, comment grading information.Server software can respond the request from mobile phone A PP simultaneously, completes the tasks such as the search of data, sequence and result is passed to user APP.The link workload being wherein Input of Data data is heavy, and we intend in client software, adding the function that intelligence integrates available data, in the hope of completing the foundation of database efficiently.
The design of client; Native system client adopts android system mobile phone.Android system is the mobile phone operating system of increasing income based on Linux platform that Google issued in 2007.In recent years, the mobile phone market occupation rate based on this platform improves constantly, and adds its good opening and abundant api interface, can develop various application program easily.
The framework of android system builds on linux kernel, contains various equipment and administration module, enumerate very complete class libraries and framework, comprise light-weight database SQLite, browser Webkit etc.Whole system is based upon on Dalvik virtual machine, and application program uses Java language to write.Android system provides the soft and hardware resource that abundant framework (activity management, location management etc.) carrys out management system, incorporate conventional application program (contact person, phone directory etc.), and having opened very comprehensive API for user, whole platform has good opening and extendability.Therefore under Andriod operating system, exploitation shopping guidance system is easily transplanted and promotes.
Location algorithm is the core of positioning system, location algorithm of the present invention, first sets up electromagnetic power path loss model
P ( d ) = P ( d 0 ) - 10 alg ( d d 0 ) - ζ ( dB ) - - - ( 1 )
Wherein, P (d) is the function of acknowledge(ment) signal intensity and distance; d 0it is reference distance; D is actual distance; α is path loss index, and show the speed that path loss increases with distance, it depends on specific communication environments; ζ is the shadowing factor in units of dB.
Determine the parameter of model, next step estimates the position of mobile phone (MS) exactly.The coordinate of definition MS point is (x, y), and the coordinate of BS point is (x i, y i), then the Euclidean distance between target MS and base station BS is d i.
d i = ( x i - x ) 2 + ( y i - y ) 2 - - - ( 2 )
Suppose that MS can be recorded by n BS, then can list n range equation according to formula (2).In the corridor environment of one dimension, horizontal ordinate and the ordinate of MS with BS must have one group identical, so the Nonlinear System of Equations that n group data are listed is quadratic equation with one unknown group, when n is greater than and equals 2, have solution.Namely 2 BS of conllinear measure the signal of same MS, just can estimate the coordinate of MS.D in formula (2) can be obtained by formula (1) ibe estimated as
d ~ i = d 0 · 1 0 p w ( d i ) - p ( d 0 ) + ζ - 10 a - - - ( 3 )
Thus Taylor series expansion is carried out and linearization to equation line, iterated revision estimated position after use least square method calculating deviation value.If deviation value is less than default precision threshold value, then iteration terminates.If estimated position is (xe, ye), departs from dX=(dx, dy) and calculate as follows:
dX＝(A TA) -1A TD (4)
Wherein D=(D1, D2 ..., Dn) and distance vector for calculating:
A = a xl a yl · · · · · · a xn a yn , Wherein a xi = x c - x i r i , a yi = y c - y i r i ,
r i = ( x e - x ) 2 + ( y e - y ) 2 , i ∈ [ 1 , n ]
In the present system, rely on Android phone operating system, the implementation procedure of indoor positioning algorithms as shown in Figure 3.Communications portion of the present invention mainly contains client and server end, and client is based upon on Android phone operating system and hardware thereof, and server end is based upon on Web server and database server.
The present invention has the following advantages: the location of employing indoor wireless WiFi and Quick Response Code, the market shopping in Android phone guide the exploitation of software APP and the foundation of market database server.Utilize market shopping to guide APP, realized the display of merchandise news by indoor wireless location technology and background data base, the scanning of Quick Response Code, server realizes the transmission of information complete the information transmission of shopping guide's terminal and background data base.Realize being the information inquiry of machine terminal commodity, the function such as shelf location at commodity place, supermarket being provided in patterned mode, the commodity of needs can be found rapidly in customer purchase process, also can settle accounts at any time, raise the efficiency, thus effectively improve the problem of supermarket queuing clearing.
The above is only to better embodiment of the present invention, not any pro forma restriction is done to the present invention, every any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.

Claims (8)

1. the market shopping bootstrap technique of indoor positioning, is characterized in that: carry out according to following steps:
Step 1: user downloads the map file in current market in advance on mobile phone;
Market Region dividing is the length of side by step 2: arrange wireless router in market is the square net of 200 meters, and wireless router is placed on square corner;
Step 3: the SSID arranging wireless router, SSID are " market name+router-number ", open wireless route WIFI function;
Step 4: arrange a Web server in market, Web server has WIFI transmission-receiving function, is used for intercepting the connection request of mobile phone terminal, deposits wireless router concrete positional information of placing in market in the database of Web server;
Step 5: when user needs indoor positioning, WIFI function opened by mobile phone, and the SSID of around wireless router and its WIFI signal intensity are sent to Web server by WIFI wireless mode;
Step 6:Web server retrieves the positional information that router corresponding to SSID is placed in a database after receiving the Location Request of mobile phone, in conjunction with the signal intensity of each position, calculate the positional information residing for mobile phone terminal, and return to mobile phone, demonstrate on the map of market after mobile phone reception information and mark the position at the current place of user, completing position fixing process.
2. according to the market shopping bootstrap technique of indoor positioning described in claim 1, it is characterized in that: described Web server adopts the erection of sql server2008 database software, be configured to use ICP/IP protocol to intercept the connection request of mobile phone terminal.
3. according to the market shopping bootstrap technique of indoor positioning described in claim 1, it is characterized in that: client end AP P can by the wireless routing signal near scanning relatively, and obtaining client position in real time in conjunction with Web server database information, precision is 3 ~ 4 meters.
4. according to the market shopping bootstrap technique of indoor positioning described in claim 1, it is characterized in that: the system of described mobile phone adopts android system.
5. according to the market shopping bootstrap technique of indoor positioning described in claim 1, it is characterized in that: described position fixing process is as follows: set up electromagnetic power path loss model
Wherein, P (d) is the function of acknowledge(ment) signal intensity and distance; d 0it is reference distance; D is actual distance; α is path loss index, and show the speed that path loss increases with distance, it depends on specific communication environments; ζ is the shadowing factor in units of dB; Be defined in the coordinate of dynamic (MS) for (x, y), the coordinate of base station (BS) is (x i, y i). the Euclidean distance then between target and base station is d i
d i = ( x i - x ) 2 + ( y i - y ) 2 - - - ( 2 )
Suppose that MS can be recorded by n BS, then can list n range equation according to formula (2), in the corridor environment of one dimension, horizontal ordinate and the ordinate of MS with BS must have one group identical, so the Nonlinear System of Equations that n group data are listed is quadratic equation with one unknown group, have solution when n is greater than and equals 2, namely 2 BS of conllinear measure the signal of same MS, just can estimate the coordinate of MS, d in formula (2) can be obtained by formula (1) 1be estimated as
d ~ i = d 0 · 10 p n ( d 1 ) - p ( d 0 ) + ζ - 10 a - - - ( 3 )
Carry out Taylor series expansion and linearization to equation line thus, iterated revision estimated position after use least square method calculating deviation value, if deviation value is less than default precision threshold value, then iteration terminates.
6. the market shopping bootstrap technique of indoor positioning, is characterized in that: carry out according to following steps:
Step 1: user downloads the map file in current market in advance on mobile phone;
Step 2: market map partitioning coordinate system is that on map, there is a corresponding two-dimensional coordinate everywhere;
Step 3: regional puts up Quick Response Code mark in market, Quick Response Code mark is containing position coordinates, and position coordinates is corresponding with the coordinate system of market map, and the location coordinate information that each Quick Response Code contains all can show in the coordinate system of market map;
Step 4: user, before Quick Response Code mark, is scanned Quick Response Code mark with mobile phone;
Step 5: the current two-dimension coordinate that scanning Quick Response Code obtains, coordinate shows by the market map in mobile phone, completes position fixing process.
7. according to the market shopping bootstrap technique of indoor positioning described in claim 6, it is characterized in that: with most northwest corner, market for true origin (0,0), in units of rice, east is x-axis positive dirction, and south is y-axis positive dirction; Put up Quick Response Code in some full position in market, the position coordinates supposing to put up Quick Response Code is (x1, y1) (x2, y2) (x3, y3) ... (xn, yn) n is the total number putting up Quick Response Code; The raw information of the Quick Response Code then puted up at position (xi, yi) place is " store name, xi, yi, nearest shop (or place) name ", parses the coordinate of current location after mobile telephone scanning Quick Response Code.
8. according to the market shopping bootstrap technique of indoor positioning described in claim 6, it is characterized in that: mobile phone is as client, and the APP software of installation completes scanning Quick Response Code and obtains positional information and commodity ID.
CN201510117930.XA 2015-03-18 2015-03-18 Guide method for shopping in mall based on indoor positioning Pending CN104820935A (en)

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CN108933991A (en) * 2018-06-27 2018-12-04 南京邮电大学 A kind of supermarket's shopping guide method and system based on bluetooth iBeacon
CN108933991B (en) * 2018-06-27 2020-12-25 南京邮电大学 Supermarket shopping guide method and system based on Bluetooth iBeacon
CN109379708A (en) * 2018-09-27 2019-02-22 深圳和家园网络科技有限公司 It is a kind of with WIFI name come the method and system of determinating area
CN109547937A (en) * 2019-01-10 2019-03-29 新疆大学 A kind of derivation graph transmission device and method
CN110148231A (en) * 2019-04-11 2019-08-20 深圳市航天华拓科技有限公司 A kind of electronic sealing system for applying envelope record based on electromagnetic signal finger print information label
CN110611884A (en) * 2019-09-24 2019-12-24 马鞍山问鼎网络科技有限公司 Intelligent navigation system for shopping in shopping mall

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