CN105469166A - Supermarket shopping guide system based on wifi indoor positioning technology - Google Patents

Abstract

The invention discloses a supermarket shopping guide system based on wifi indoor positioning technology, which is characterized in that it includes a wireless node, a mobile intelligent terminal, a server and a database; wherein, the wireless node is used for positioning and communication; the mobile intelligent terminal is used for completing the supermarket plane Map drawing, positioning request and display, supermarket shopping guide and quick navigation; the server is used to respond to user requests to complete various functions, and complete the positioning through the operation of the database and return the result; the database mainly stores commodity information and its location and supermarket location fingerprint information . The invention provides a supermarket shopping guide system based on wifi indoor positioning technology, which can provide users with real-time positioning, plan optimal paths for users or quickly navigate to commonly used locations, and enable users to quickly find commodities or commonly used locations in supermarkets.

Description

A supermarket shopping guide system based on wifi indoor positioning technology

technical field

The invention belongs to the technical field of indoor positioning and navigation, and in particular relates to a supermarket shopping guide system based on wifi indoor positioning technology.

Background technique

In today's life, the daily consumption place that people often go to is the supermarket. However, with the progress and development of the economy and society and the improvement of people's living standards, the scale of supermarkets is also increasing, and there may be thousands of products on display. The wide variety of commodities brings more choices to customers. It also brought a lot of inconvenience.

One is that when people go to a supermarket they are not very familiar with or the supermarket is large, they often do not understand its layout and goods placement, and it is difficult to quickly find the goods they need to buy, causing a lot of waste of time and energy for consumers . Since a large number of consumers stay in the supermarket in order to look for goods, it may also cause congestion in the supermarket, which is not conducive to improving the performance of the supermarket. The second is that when a user needs to purchase multiple commodities, since he does not know the specific location of the commodity, he may take many repeated paths, which reduces the shopping experience of the consumer. To this end, some supermarkets will arrange some shopping guides or post a supermarket floor plan at a certain position in the supermarket. However, due to some daily changes in the products listed in the supermarket, the shopping guides in most cases cannot accurately tell consumers the price of a certain product. The specific location, and consumers cannot see the floor plan whenever they need it, so these methods cannot solve the current problems. Using too many shopping guides will increase the cost of the supermarket and cannot effectively improve the service quality.

With the rapid development of wifi technology in recent years, wifi has been widely deployed in public places in cities such as large supermarkets, shopping malls, schools, and enterprises. There have been many representative research results in wifi indoor positioning technology, such as indoor positioning systems such as RADAR system, Nibble system, and Weyes system. Google has introduced wifi indoor positioning and indoor maps into Google Maps, and companies such as Baidu, AutoNavi, Siwei, and Wisdom Map are also developing wifi indoor positioning products. Due to the popularization of wifi networks, the positioning accuracy of wifi can reach the meter level, the positioning cost is low, the positioning signal transmission and reception range is large, and the applicability is strong, which can be popularized and promoted.

To this end, how to combine wifi-based indoor positioning technology to solve the problem of consumers' grasp of the overall layout of the supermarket, the rapid determination of the location of the products they need to buy when shopping, and the optimal path planning to reach the products, and how to quickly complete the entire shopping and leave the supermarket become the key question.

Contents of the invention

The purpose of the present invention is to provide a supermarket shopping guide system based on wifi indoor positioning technology, which solves the problem that consumers are slow to find products and easy to take repeated paths when shopping in the supermarket.

The technical scheme adopted in the present invention is a supermarket shopping guide system based on wifi indoor positioning technology, including wireless nodes, mobile intelligent terminals, servers and databases;

Among them, wireless nodes are used for positioning and communication;

The mobile intelligent terminal is used to complete the drawing of the supermarket plane map, positioning request and display, supermarket shopping guide and quick navigation;

The server is used to respond to user requests to complete various functions, and complete positioning and return results through operations on the database;

The database mainly stores commodity information and its location and supermarket location fingerprint information.

The present invention is also characterized in that,

The drawing of the supermarket plane map needs to complete the layout of the wireless nodes in the whole supermarket and the establishment of the database product information and its location information table.

The supermarket floor plan can be zoomed in and out.

The layout of the wireless nodes in the supermarket is as follows: according to the size and layout of the supermarket, the wireless nodes are placed in the supermarket according to certain rules to form a wireless local area network, which is used for the positioning of indoor personnel and the shopping guide of supermarket products;

When laying out wireless nodes, first consider the placement of wireless nodes at the border to facilitate the drawing of supermarket maps; secondly, a certain amount of wireless nodes should be placed in some landmark locations including cash registers, exits, and toilet areas; finally, according to The classification of goods in the supermarket and its floor area are suitable for the arrangement of wireless nodes in the area where each category of goods is placed, that is, a node is bound to a small area, and the position of this node can be obtained in this small area. The location of the item.

The wireless nodes are installed on the top of the supermarket shelves, and if they are in non-commercial areas, they are installed on the ceiling to avoid interference to wireless signals caused by goods and people; at the same time, it is necessary to ensure that at least 4 nodes can be searched anywhere in the entire supermarket area above wireless signal.

The database includes commodity information table, location information table and location fingerprint table;

Among them, the product information table includes product category number, product category name, and product name, and is mainly used for product search;

The location information table includes the product category number, the MAC address of the wireless node bound to the area where this type of product is located, and the ground horizontal coordinates x, y of the wireless node, which is mainly used for determining the position of the product and planning the path;

The location fingerprint table includes the coordinates x, y of the reference location, the node RSSI information collected at the reference location, and its MAC address, which is mainly used for real-time positioning in the user's supermarket.

The positioning and display of the user in the supermarket adopts the RSSI position fingerprint method, which is divided into establishing a fingerprint database and real-time positioning of the user;

Among them, establish a fingerprint database, select an appropriate location reference point according to the arrangement of wireless nodes in the supermarket and the layout of the supermarket, scan the wireless signals at each reference point with a mobile smart terminal in the wifi-on state and sort them according to the signal strength , and then input the position coordinates of the reference point and upload it to the server, insert the record into the database, repeat the above steps at each reference point, all the position fingerprint information of the reference point are inserted into the database, and the fingerprint database is completed. Establish;

User real-time positioning: the user opens the supermarket map of the mobile smart terminal in the supermarket, scans the wireless signal of the current location and sends it to the server, the server analyzes the data, and searches the database for the record that best matches the signal, and then The location coordinates are returned to the user and marked on the map.

When the user locates in real time, the user's mobile smartphone scans the QR code posted in the supermarket to enter the supermarket map interface.

The supermarket shopping guide is specifically as follows: on the plane map of the supermarket on the mobile smart terminal, the user inputs keywords such as product names through text or voice, selects search, the server receives the information, searches for the category number of the product, obtains its location coordinates, and uses the coordinates The value is returned to the mobile smart terminal, and its location is displayed on the supermarket map of the mobile smart terminal; and according to the relative position of the product and the user, the path is marked, and at the same time, the user draws the route from the current point to the product to be purchased; If the user selects a variety of commodities, obtain the locations of the various commodities respectively, calculate the possible path from the current location according to each coordinate, select the optimal path to provide to the user, and guide the user to complete shopping quickly; consider when planning the user path After the user purchases the product, he needs to go to the cash register and the exit, and the cash register and the exit are directly planned in the path.

The quick navigation is specifically: the mobile smart terminal provides quick navigation to commonly used locations such as cash registers, exits, and toilets, without searching, and the user only needs to select a destination on the quick navigation interface, and the mobile smart terminal directly guides the user to the destination.

The beneficial effects of the present invention are: a supermarket shopping guide system based on wifi indoor positioning technology of the present invention can provide users with a supermarket floor plan and real-time positioning, and provide users with optimal path planning or quick navigation to frequently used locations, so that users can quickly understand The overall layout of the supermarket and real-time grasp of your position in the supermarket, you can also quickly find products or common locations in the supermarket.

Description of drawings

Fig. 1 is the structural representation of supermarket shopping guide system of the present invention;

Fig. 2 is the functional schematic diagram of the mobile intelligent terminal in the supermarket shopping guide system of the present invention;

Fig. 3 is a schematic diagram of real-time positioning of users in the supermarket shopping guide system of the present invention;

Fig. 4 is the flow chart of positioning realization in the supermarket shopping guide system of the present invention;

Fig. 5 is a flow chart of supermarket shopping guide and quick navigation in the supermarket shopping guide system of the present invention.

In the figure, 1. wireless node, 2. mobile intelligent terminal, 3. server, 4. database.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The present invention is a supermarket shopping guide system based on wifi indoor positioning technology. The structure is shown in FIG.

Among them, the wireless node 1 is used for positioning and communication; the mobile smart terminal 2 is used to complete the supermarket plane map drawing, positioning request and display, supermarket shopping guide and quick navigation; the server 3 is used to respond to user requests to complete various functions, and through the database 4 The operation completes the positioning and returns the result; the database 4 mainly stores commodity information and its location and supermarket location fingerprint information.

As shown in Figure 2, the mobile intelligent terminal 2 is divided into a supermarket plane map module, a user real-time positioning module, a supermarket shopping guide module, and a quick navigation module. The specific implementation methods of each module are as follows:

①Supermarket map module

The supermarket plane map module includes the drawing of the plane map, the marking of key positions in the map, and zooming in and out. It is necessary to complete the layout of the wireless nodes 1 in the entire supermarket and the establishment of the commodity information and its location information table in the database 4 . According to the location coordinates and spacing of each node, according to a certain ratio, first draw a simple outline of the supermarket; then according to the size of the commodity area contained in each node, use different colors to distinguish it on the map; Commonly used locations are specially marked, such as: cash register, exit, toilet, etc.; the map can also be zoomed in and out, which is convenient for users.

Among them, the arrangement of the wireless node 1 in the supermarket is specifically as follows: according to the size and layout of the supermarket, the wireless node 1 (AP) is placed in the supermarket according to certain rules to form a wireless local area network, which is used for the positioning of indoor personnel and the positioning of supermarket products. shopping guide.

When laying out wireless nodes 1, first consider the placement of wireless nodes 1 at the border to facilitate the drawing of supermarket maps; secondly, a certain amount of wireless nodes 1 should also be placed in some landmark locations, including cash registers, exits, and toilet areas; finally , and then according to the classification of goods in the supermarket and its floor area, the wireless node 1 is arranged for the area where each category of goods is placed, that is, a node is bound to a small area, and the position of this node can be obtained The location of the item in this small area. Wireless node 1 is installed on the top of the supermarket shelf, if it is in a non-commodity area, it is installed on the ceiling to avoid interference caused by goods and people to the wireless signal; at the same time, it is necessary to ensure that at least 4 nodes can be searched anywhere in the entire supermarket area. more than one wireless signal. Wireless node 1 can choose TL-WR702N150Mbps mini wireless router, which has good compatibility.

②User real-time positioning module

The schematic diagram of the user real-time positioning module is shown in Figure 3. The system uses wifi-based indoor positioning technology to complete the real-time positioning of supermarket users, and the positioning algorithm is based on the RSSI location fingerprint method.

Positioning is mainly divided into fingerprint database collection (that is, establishment of fingerprint database) and user real-time positioning, as shown in Figure 4.

Before the user can use it, the staff needs to complete the collection of the fingerprint database. The staff uses the information collection module of the system to collect the wireless signal strength of each reference point, and stores its coordinates and wireless signal information in the database as a location fingerprint. Record. The specific implementation process is as follows: in the supermarket where the wireless node 1 has been arranged, select an appropriate location reference point according to the layout of the supermarket. Module, at the same time, make sure that the wifi of the mobile phone is turned on, scan the wireless signals at each reference point and sort them according to the signal strength, then input the location coordinates of the reference point and upload the location coordinates and the 4 wireless signal information with the highest strength To the server 3, insert the record into the database 4, repeat the above steps at each reference point, all the position fingerprint information of the reference points are inserted into the database 4, and the establishment of the fingerprint database 4 is completed.

The established database 4 includes a commodity information table, a location information table and a location fingerprint table;

Among them, the product information table includes product category number, product category name, and product name, and is mainly used for product search;

The location information table includes the product category number, the MAC address of the wireless node 1 bound to the area where this type of product is located, and the ground horizontal coordinates x, y of the wireless node 1, which is mainly used for determining the position of the product and planning the route;

The location fingerprint table includes the coordinates x, y of the reference location, the node RSSI information collected at the reference location, and its MAC address, which is mainly used for real-time positioning in the user's supermarket.

Real-time location of the user in the supermarket: When the user enters the supermarket, the user can scan the QR code posted in the supermarket with his mobile smart phone (no need for a dedicated mobile phone or terminal, just make sure the wifi function of the mobile phone is turned on) and use the web page The user enters the web page of the system in the form of a computer (without downloading the client), that is, enters the supermarket map interface, the user scans the wireless signal of the current location and sends it to the server 3, the server 3 analyzes the data, and searches in the database 4 The record that best matches that signal, then returns that location coordinate to the user and marks it on the map.

③Supermarket shopping guide module

As shown in Figure 5, after the user completes the positioning, he or she can input keywords such as product name, etc. by text or voice on the plane map of the supermarket, select search, and the server 3 receives the information, searches for the category number of the product, and obtains its location coordinates , return the coordinate value to the mobile smart terminal 2, and display its position on the supermarket plane map of the mobile smart terminal 2; and complete the labeling of the path according to the relative position of the product and the user, and at the same time draw a map for the user from the current point to the It is necessary to purchase the route of the product; if the user selects multiple products, obtain the positions of the multiple products respectively, calculate the possible path from the current position according to each coordinate, select the optimal path and provide it to the user, and guide the user to complete the shopping quickly; When planning the user path, consider that the user needs to go to the cash register and exit after purchasing the product, and plan the cash register and exit directly in the path.

④Shortcut navigation module

As shown in Figure 5, the smart mobile terminal 2 provides quick navigation for commonly used locations such as cash registers, exits, and toilets. No need to search, only the user needs to select a destination on the quick navigation interface, and the smart mobile terminal 2 directly guides the user to the destination.

The present invention is a supermarket shopping guide system based on wifi indoor positioning technology, using process:

When a user needs a shopping guide in a supermarket, he or she scans the QR code in the supermarket with a mobile phone (i.e. mobile smart terminal 2), directly accesses the system, and then sends a request to the server 3 through the system, and the plane map of the supermarket can be displayed on the mobile phone , including the outline and layout of the supermarket and the signs of the entrance and exit. The user uses the positioning module to display the user's current location on the map in real time. At this time, the user can use voice or text to input the product name, and the supermarket shopping guide module displays the location of the product on the map. And plan the route for the user from the user's current location to the product to be purchased; when the user needs to purchase multiple products, he can enter multiple keywords, and the system can provide a The user plans an optimal path to guide the user to complete shopping in the shortest time; when the user purchases one or more commodities, the system will plan the path between the user and the commodity, and also plan the cash register and exit in the path; when When users need to navigate common locations such as cash registers, exits, or toilets, users can use the shortcut navigation module without searching, which is convenient and fast; during the entire shopping guide process, the map can be zoomed in and out, which is convenient for users to view the map.

The supermarket shopping guide system of the present invention fully utilizes the indoor positioning technology based on wifi to realize the supermarket shopping guide, the wifi node cost is low, the communication capability is strong, and it is easy to install; the arrangement of the wireless node 1 is completed according to the boundary and layout of the supermarket, and its Placed on the top of the supermarket shelves or on the ceiling, it can prevent the shelves or people from interfering with the signal; the essential function of the wifi network is actually data transmission. In the use of the system, the operator does not need to be involved, which avoids the waste of user traffic.

The system can run on the smart terminal carried by the consumer itself, without providing additional equipment, which reduces the cost; the system is realized by using the web, and the user can access it through the browser, avoiding the download and installation of the APP; The two-dimensional code is provided to the user, and the two-dimensional code is pasted at the entrance of the supermarket and at various obvious positions in the supermarket. Before entering the supermarket, the user directly scans the two-dimensional code to use this shopping guide system, and the user does not need to enter the website address, which is simple and convenient to use .

Bind the position of the product with the wireless node 1. When the position of the product in the supermarket is changed daily, you can directly change the position of the corresponding node. There is no need to arrange personnel to change the record of the product position again, which is convenient for later use. And maintenance.

The system can draw a plane map of the supermarket; the map marks the locations of various commodities, cash registers, exits, and toilets in the supermarket; the map can be zoomed in and out, making it easier for users to view and use;

Users can use text and voice to complete the input of keywords; it solves the problem of product positioning in supermarkets, and can help consumers quickly find a certain product; completes the optimal route planning for purchasing multiple products and the route on the map Display, draw the route through lines and arrows; realize the user's entire shopping plan in the supermarket, including the path planning of the cash register and the exit when shopping is completed and its display on the map, which is convenient for the user to go directly to the checkout and leave when shopping is completed, and at the same time It avoids the congestion in the supermarket; the system also adds a quick search, mainly for quick navigation of the cashier, exit and toilet.

Claims (10)

1. a supermarket shopping guide system based on wifi indoor positioning technology, is characterized in that, comprises wireless node (1), mobile intelligent terminal (2), server (3) and database (4); Wherein, the wireless node (1) is used for positioning and communication; The mobile smart terminal (2) is used to complete the drawing of the supermarket plane map, positioning request and display, supermarket shopping guide and quick navigation; The server (3) is used to respond to user requests to complete various functions, and complete positioning and return results through operations on the database (4); The database (4) mainly stores product information and its location and supermarket location fingerprint information. 2. A kind of supermarket shopping guide system based on wifi indoor positioning technology according to claim 1, is characterized in that, described supermarket plane map drawing needs to finish the arrangement of wireless node (1) and database (4) commodity information in the whole supermarket and the establishment of its location information table. 3. A supermarket shopping guide system based on wifi indoor positioning technology according to claim 2, characterized in that the plane map of the supermarket can be zoomed in and out. 4. A supermarket shopping guide system based on wifi indoor positioning technology according to claim 2, characterized in that the arrangement of wireless nodes (1) in the supermarket is specifically: according to the size and layout of the supermarket, according to certain rules In the supermarket where the wireless node (1) is placed, a wireless local area network is formed, which is used for the positioning of indoor personnel and the shopping guide of supermarket commodities; When laying out wireless nodes (1), first consider the placement of wireless nodes (1) at the border to facilitate the drawing of supermarket maps; secondly, a certain amount of wireless Node (1); Finally, according to the classification of goods in the supermarket and its occupied area, the arrangement of wireless nodes (1) is suitable for the area where each category of goods is placed, that is, a node is bound to a small area, The position of the commodity in this small area can be obtained through the position of this node. 5. A supermarket shopping guide system based on wifi indoor positioning technology according to claim 4, characterized in that the wireless node (1) is installed on the top of the supermarket shelf, if it is in a non-commodity area, it is installed on the ceiling , to avoid interference caused by goods and people to wireless signals; at the same time, it is necessary to ensure that at least 4 or more wireless signals can be searched anywhere in the entire supermarket area. 6. a kind of supermarket shopping guide system based on wifi indoor positioning technology according to claim 4, is characterized in that, described database (4) has included commodity information table, location information table and location fingerprint table; Among them, the product information table includes product category number, product category name, and product name, and is mainly used for product search; The location information table includes the commodity category number, the MAC address of the wireless node (1) bound to the area where the commodity is located, and the ground horizontal coordinates x, y of the wireless node (1), which are mainly used for commodity location determination and path planning; The location fingerprint table includes the coordinates x, y of the reference location, the node RSSI information collected at the reference location, and its MAC address, which is mainly used for real-time positioning in the user's supermarket. 7. a kind of supermarket shopping guide system based on wifi indoor positioning technology according to claim 6, it is characterized in that, positioning and displaying in described user supermarket adopts based on RSSI position fingerprint method, is divided into and sets up fingerprint database (4) and user real-time positioning; Among them, a fingerprint database (4) is established, an appropriate position reference point is selected according to the arrangement of wireless nodes (1) in the supermarket and the layout of the supermarket, and a mobile smart terminal (2) in a wifi-on state is used to scan the wireless network at each reference point. signal and sort them according to the strength of the signal, then input the position coordinates of the reference point and upload it to the server (3), insert the record into the database (4), repeat the above steps at each reference point, all reference points The position fingerprint information of point all inserts database (4), promptly finished the establishment of fingerprint database (4); User real-time positioning: the user opens the supermarket map of the mobile smart terminal (2) in the supermarket, scans the wireless signal of the current location and sends it to the server (3), the server (3) analyzes the data, and records it in the database (4 ) to find the record that best matches the signal, and then return the location coordinates to the user and mark them on the map. 8. A kind of supermarket shopping guide system based on wifi indoor positioning technology according to claim 7, it is characterized in that, when the user locates in real time, the user's mobile smart phone enters the supermarket by scanning the two-dimensional code posted in the supermarket Flat map interface. 9. A kind of supermarket shopping guide system based on wifi indoor positioning technology according to claim 7, characterized in that, said supermarket shopping guide is specifically: on the supermarket plane map of the mobile intelligent terminal (2), the user passes text or voice Input keywords such as commodity name, select search, server (3) receives this information, looks up the category number of this commodity, obtains its location coordinates, returns this coordinate value to mobile intelligent terminal (2), and in mobile intelligent terminal (2) ) to display its location on the supermarket plane map; and according to the relative position of the product and the user, complete the labeling of the path, and at the same time draw the route from the current point to the desired product for the user; if the user chooses multiple products, get multiple The location of a commodity, calculate the possible path from the current location according to each coordinate, select the optimal path to provide to the user, and guide the user to complete the shopping quickly; when planning the user path, consider that the user needs to go to the cashier and exit after purchasing the commodity , plan the cash register and the exit directly in the path. 10. A supermarket shopping guide system based on wifi indoor positioning technology according to claim 9, characterized in that, the shortcut navigation is specifically: the mobile smart terminal (2) provides shortcuts to common locations such as cash registers, exits, and toilets Navigation requires no search, and the user only needs to select a destination on the shortcut navigation interface, and the mobile smart terminal (2) directly guides the user to the destination.