UWB-based shopping guide system and method for shopping mall

Abstract

The invention discloses a UWB-based market shopping guide system and method. The system comprises a server side; the UWB base station is in data interaction with the server side; the application software is used for receiving the UWB base station signal for positioning; the server side comprises a server network connection module which carries out data interaction with the UWB base station. The server control module is used for recording the position coordinates of the UWB base station, monitoring the operation state of the UWB base station and controlling the communication information and behavior of the UWB base station; the display module is used for displaying the current state of the UWB base station; the accurate position of a customer in a shopping mall is provided through UWB positioning, the customer is assisted in shopping, the customer can clearly know the position of the customer, the customer can conveniently and accurately find the corresponding shop to go to and can also obtain the real-time promotion information of the current shopping mall, the problems that the positioning precision is poor and the positioning is wrong due to the fact that traditional GPS positioning and the like are located indoors are solved, and the service life of the customer is prolonged. And the shopping experience of customers is optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of short-distance communication, and in particular relates to a shopping mall shopping guide system and method based on UWB. Background Art

[0002] UWB: Ultra Wide Band (UWB) technology is a wireless carrier communication technology. Positioning is performed through long-distance communication between two devices equipped with UWB, ranging and direction angle confirmation. At the same time, UWB characteristics also support high-speed data transmission. Compared with other existing communication technologies, it has the advantages of accurate positioning, high transmission rate, strong anti-interference ability, and low power consumption.

[0003] At present, various large shopping malls and super-large shopping malls continue to emerge. Due to the complex indoor environment of the shopping mall, the existing positioning systems such as GPS, Bluetooth, and WIFI positioning have poor positioning accuracy and are prone to errors. They cannot provide customers with accurate positioning support. Customers do not know where they are in the shopping mall, and cannot quickly and accurately find the store they want to go to. Therefore, it is necessary to develop a new UWB-based shopping guide system and method to solve the existing problems. Summary of the invention

[0004] The purpose of the present invention is to provide a shopping mall shopping guide system and method based on UWB to solve the problem of being unable to quickly and accurately find stores inside a shopping mall.

[0005] To achieve the above object, the present invention provides the following technical solution: a shopping guide system based on UWB, comprising: Server side; A UWB base station for data interaction with the server; Application software for receiving the UWB base station signal for positioning; The server side includes: A server network connection module for data interaction with the UWB base station; A server control module for recording the location coordinates of the UWB base station, monitoring the operating status of the UWB base station, and controlling the communication information and behavior of the UWB base station; Query command used to query the real-time status of the currently connected UWB base station; Information input command for inputting information to be pushed; Deletion instructions for deleting historical push information records; Update instructions for updating push information content; Control instructions for starting or shutting down the UWB base station; Display module for displaying the current UWB base station status; The UWB base station comprises: A base station network connection module connected to the server end; UWB module for communicating with mobile terminals and confirming location information; A base station control module for controlling the interaction between the mobile terminal and the UWB module; The application software runs on a mobile terminal equipped with a UWB component.

[0006] Preferably, the data packet format for communication between the application software and the UWB base station includes: The first byte is used to identify the packet type, where 0 represents a positioning packet and 1 represents an information packet: The second to fifth bytes represent the sending timestamp in microseconds, based on the UNIX timestamp; The sixth to ninth bytes represent the receiving timestamp in microseconds; The tenth to thirteenth bytes represent the distance in centimeters; The total length of the data packet is 13 bytes. If some fields are not used, they are filled with 0.

[0007] Preferably, the data packet sends the positioning data packet at a frequency of once per second by default. When it is determined that the location of the mobile terminal has changed and there is product information that needs to be promoted, the server sends the product information data packet to the application software of the mobile terminal and displays it on the mobile terminal.

[0008] Preferably, controlling the UWB base station communication information and behavior includes: inputting an instruction set to control different behaviors.

[0009] Preferably, the UWB base stations are deployed at the entrances and exits of shopping malls, elevator entrances and toilet doors.

[0010] The present invention further provides a shopping guide method for shopping malls based on UWB, comprising: A mobile terminal with the application software installed enters the mall, and the UWB base station communicates bidirectionally with the UWB component on the mobile terminal to perform ranging and positioning; The application software displays the internal structure of the mall in the form of a three-dimensional map, identifies the location of the UWB base station and the real-time location of the mobile terminal, and displays information about stores nearby. If the product promotion switch of the application software is turned on, the UWB base station will push the promotion product information, discount advertisement description and the location of the corresponding store to the mobile terminal.

[0011] Preferably, after the application software is installed, a product promotion switch is turned on by default.

[0012] Preferably, the UWB base station and the UWB component on the mobile terminal communicate bidirectionally to perform ranging and positioning, including: The UWB base station sends broadcast information, and the mobile terminal responds after scanning and finding the UWB base station signal. The distance between the mobile terminal and the UWB base station is calculated through multiple two-way information exchanges. The calculation formula is as follows: Distance = flight arrival time ´ speed of light; According to the calculation results, the mobile terminal sends and receives data packets with the nearest UWB base station, and transmits data in real time; When it is found that the new UWB base station is closer than the current UWB base station, the mobile terminal sends an information data packet to the new UWB base station and requests to establish data communication.

[0013] Preferably, the method for displaying store information near a location includes: the location information of the store is stored in a database of the server, the server obtains the real-time location of the mobile terminal through the UWB base station, and compares the real-time location of the mobile terminal with the distance value of the store location; if the distance value between the mobile terminal near a certain UWB base station and the store is less than a set value, the UWB base station pushes the information of this store to the mobile terminal.

[0014] Preferably, the set value is 100 meters.

[0015] Preferably, the calculation formula for calculating the distance between the UWB module scanned by the mobile terminal and the UWB base station through multiple bidirectional information exchanges includes: ; T prop : The time difference of electromagnetic wave flight that needs to be measured.

[0016] T round1 : The time difference between the first message sent and the second message sent on device A; T reply1 : The time difference between the first reply message and the second reply message on device B; T round2 : The time difference between the second and third message sending on device A; T reply2 : The time difference between the second and third reply messages on device B.

[0017] Technical effects and advantages of the present invention: The shopping mall guide system and method based on UWB utilizes UWB technology and changes the communication data packet format to make its communication information timely, realizes the location information of the store according to the real-time location of the mobile terminal and sends it to the mobile terminal close to the store, and compares the distance between the store and the store to achieve the purpose of timely pushing the information of the store to the mobile terminal, and can accurately locate the mobile terminal in real time, which can be accurate to the centimeter level. It is the most optimized solution for indoor precise positioning. Although its use requires the construction of multiple UWB base stations in the use place, which is costly, it can provide customers with a very good shopping experience after actual operation. Due to the communication data packet format, it is combined with UWB's two-way communication in a timely manner to achieve real-time positioning experience and precise location. Through the definition of the data packet format, data redundancy is reduced, and the use of storage space is optimized, thereby optimizing. It improves storage and transmission efficiency, and is also helpful for data preprocessing, processing and basic analysis, improving the speed and accuracy of data processing. Compression and slicing technology are used to improve data transmission efficiency; thereby achieving efficiency improvement during multiple two-way data exchanges, improving the accuracy and precision of mobile terminal positioning, and enabling appropriate product promotion and support for customers' precise positioning, so that customers can know where they are in the mall and quickly and accurately find the store they want to go to, and also providing merchants with accurate channels for product promotion to customers currently in the mall; UWB positioning provides customers with their precise location in the mall to assist customers in shopping, and can also obtain real-time promotion information of the current mall, solving the problem of poor positioning accuracy and positioning errors of traditional GPS and other positioning methods in indoor environments. In addition, it also adds real-time broadcasting of mall product promotion information, optimizing customers' shopping experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a framework diagram of the system of the present invention; Figure 2 A schematic diagram of the connection between the server end and the UWB base station of the system of the present invention; Figure 3 It is a schematic diagram of merchandise promotion in a shopping mall of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] The present invention provides Figure 1A shopping guide system based on UWB in a shopping mall as shown in the figure comprises: a server, a UWB base station, and a mobile terminal with a UWB module; Server side: The server is connected to the UWB base station through Ethernet wired or WIFI wireless network, and is used to control the UWB base station, record the location coordinates of the UWB base station, monitor the operating status of the UWB base station, and control the communication information and behavior of the UWB base station; UWB base station: deployed at each entrance and exit of the shopping mall, elevator entrance, toilet entrance, etc., to achieve UWB signal coverage of the shopping mall, used to scan mobile terminals with UWB modules, and provide accurate location coordinates of mobile terminals through positioning; Figure 2 As shown; Mobile terminals with UWB components: The mobile terminal needs to be installed with the mall application software developed by the mall. The mall application software on the mobile terminal is the entrance to the display location and UWB communication. The mall application software serves as the entrance to the client positioning software and uses 3D mapping software to draw a stereoscopic map of the mall interior. The application software can display the internal structure of the mall in the form of a 3D map, which is used to identify the location of the UWB base station and the real-time location of the mobile terminal. The mall application software further integrates the store data of the mall and additionally displays store information near the location.

[0021] The server side includes: A server network connection module for interacting with the UWB base station data; A server control module for recording the location coordinates of the UWB base station, monitoring the operating status of the UWB base station, and controlling the communication information and behavior of the UWB base station; realizing two-way data communication with the UWB base station through the server network connection module, and responding to user input control operations; Query command used to query the real-time status of the currently connected UWB base station; Information input command for inputting information to be pushed; Deletion instructions for deleting historical push information records; Update instructions for updating push information; Control instructions for starting or shutting down the UWB base station; Display module for displaying the current UWB base station status; When the UWB base station and the UWB component of the mobile terminal communicate bidirectionally, the sent and received data information needs to be formatted to distinguish whether the sent and received data information is used for positioning or for product promotion information. If it is for product promotion information, the data information needs to be parsed to obtain product information and corresponding store information; the first byte of the data packet is used to identify the data packet type, where 0 represents a positioning data packet and 1 represents an information data packet; The second to fifth bytes, a total of 4 bytes, represent the sending timestamp in microseconds based on the UNIX timestamp; The sixth to ninth bytes, a total of 4 bytes, represent the receiving timestamp in microseconds; The tenth to thirteenth bytes represent the distance in centimeters. The total length of the data packet is 13 bytes. If some fields are not used, they are filled with 0. The protocol specification method stipulates the meaning of the bytes in the communication.

[0022] By default, positioning data packets are sent once per second for real-time positioning. When it is determined that the mobile terminal has moved to a certain position, if there is product information that needs to be promoted, the server will send an information data packet to the mobile terminal, which will eventually be displayed on the software of the mobile terminal.

[0023] After the data is packaged, it is sent out through the chip and then the antenna. Chip vendors will have firmware packages with corresponding API calls for sending data and receiving data through interrupt events to get data information. UWB base station includes: The base station network connection module is used to realize two-way data communication with the server side, and the connection method is through Ethernet wired or WIFI wireless network; The base station control module is used to control the UWB module and control the interaction between the mobile terminal and the UWB module; UWB module, used to communicate with the UWB component of the mobile terminal to confirm the location information; Precise positioning support: The customer carries a mobile terminal with a UWB component into the entrance of the mall. The mobile terminal is installed with the mall application software developed by the mall. The mall application software contains UWB-based positioning software, which calls the API interface of the mobile terminal to use its UWB module function. The UWB component on the mobile terminal transmits a signal to the UWB base station, and the UWB base station at the mall entrance scans and receives the signal to locate the mobile terminal. The customer carries the mobile terminal into the UWB signal coverage area of ​​another base station, and the corresponding UWB base station scans and receives the signal to locate the mobile terminal and update the location coordinates of the mobile terminal. The customer can check his or her positioning information at any time through the mall application software. The three-dimensional stereoscopic display makes the customer's location information more accurate, accurate to the floor and detailed location. The mall application software additionally displays the store information near the location, so that customers can find the store they want to visit more quickly.

[0024] Shopping mall merchandise promotion: like Figure 3As shown in the figure, a customer carries a mobile terminal with a UWB module into the entrance of a shopping mall, and the mobile terminal is installed with the shopping mall application software developed by the shopping mall. While supporting the positioning of the mobile terminal, the UWB base station can transmit relevant information of the shopping mall, such as the free WIFI hotspot and password. When a customer carries a mobile terminal into the UWB signal coverage area of ​​another base station, the corresponding UWB base station sends the relevant product information of some promotional products of the shopping mall, the description of the discount advertisement and the location of the corresponding store, which is displayed on the mobile terminal through the information push of the shopping mall application software.

[0025] Implementing the hardware and software foundation: The mall sets up the server side, installs the UWB base station, and debugs the communication between the server and the UWB base station. Depending on the environment and conditions, the communication method can be wireless WIFI or wired Ethernet. Normal communication between the two is required, and the UWB base station installation confirmation signal needs to cover the mall area. The mall application software can display the internal structure of the mall in the form of a three-dimensional stereogram and can control the UWB module of the mobile terminal to receive and send UWB signal data. Example

[0026] The present invention further provides a shopping guide method for shopping malls based on UWB, comprising the following steps: Step 1: The customer installs the mall application software on their mobile terminal, and the product promotion switch is turned on by default after the software is installed; Step 2: The customer enters the mall with a mobile terminal equipped with a UWB module. The mall's UWB base station communicates with the UWB module on the mobile terminal in a two-way manner to measure distance and position the customer. The mall application software displays the internal structure of the mall in the form of a three-dimensional map to identify the location of the UWB base station and the real-time location of the mobile terminal. The mall application software also displays information about nearby stores. Two-way ranging solution: Two devices are located at two points. Through the transmission of electromagnetic waves between the two devices, the distance between the two points can be calculated by combining the flight arrival time with the speed of light. Calculation formula: distance = flight arrival time x speed of light; The accuracy of a single measurement can be improved through multiple two-way information exchanges. This method can achieve a more accurate distance between devices without the need for crystal oscillator synchronization between devices A and B. The following is the calculation formula for this algorithm: ; in, The time difference of the electromagnetic wave flight that needs to be measured; The time difference between the first message sent and the second message sent on device A; The time difference between the first reply message and the second reply message on device B; The time difference between the second and third message sending on device A; The time difference between the second and third reply messages on device B; The above calculation only requires one base station and a mobile terminal to achieve positioning. The advantage is that a small number of base stations are required in a certain space. The disadvantage is that it requires several rounds of communication messages to and from the mobile terminal. Step 3: When the UWB base station at the mall entrance communicates with the mobile terminal, it also sends the free WIFI hotspot and password; Step 4: The switch for merchandise promotion in the mall application is turned on, and the corresponding UWB base station sends the mall’s promotional merchandise information, discount advertisement descriptions, and the location of the corresponding store. This information is ultimately displayed on the mobile terminal through the mall application’s information push.

[0027] The shopping guide system and method based on UWB in a shopping mall utilizes UWB technology and changes the format of communication data packets to make its communication information timely, realizes that the location information of the store is sent to the mobile terminal close to the store according to the real-time location of the mobile terminal, and compares the distance between the mobile terminal and the store to achieve the purpose of timely pushing the information of the store to the mobile terminal, and can accurately locate the mobile terminal in real time, which can be accurate to the centimeter level. It is the most optimized solution for indoor precise positioning. Although its use requires the construction of multiple UWB base stations in the place of use, which is costly, it can provide customers with a very good shopping experience after actual operation. Due to the communication data packet format, it is combined with UWB's two-way communication in a timely manner to achieve real-time positioning experience and precise location. Through the definition of the data packet format, data redundancy is reduced, the use of storage space is optimized, and storage and transmission efficiency are optimized. rate, and at the same time helps with data preprocessing, processing and basic analysis, improves the speed and accuracy of data processing, and improves data transmission efficiency through compression and slicing technology; thereby achieving efficiency improvement during multiple two-way data exchanges, improving the accuracy and precision of mobile terminal positioning, and enabling appropriate product promotion and support for customers' precise positioning, making it convenient for customers to know where they are in the mall, quickly and accurately find the store they want to go to, and also providing merchants with accurate channels for product promotion to customers currently in the mall; through UWB positioning, it provides customers with the precise location of the mall to assist customers in shopping, and also obtains real-time promotion information of the current mall, solving the problem of poor positioning accuracy and positioning errors of traditional GPS and other positioning in indoor locations, and also adds real-time broadcasting of mall product promotion information, optimizing customers' shopping experience.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shopping guide system based on UWB, characterized by: include: A server side, a UWB base station for data exchange with the server side, and an application software for receiving the UWB base station signal for positioning; The server side includes: A server network connection module for data interaction with the UWB base station; A server control module for recording the location coordinates of the UWB base station, monitoring the operating status of the UWB base station, and controlling the communication information and behavior of the UWB base station; Query command used to query the real-time status of the currently connected UWB base station; Information input instructions for inputting information to be pushed; Deletion instructions for deleting historical push information records; Update instructions for updating push information content; Control instructions for starting or shutting down the UWB base station; Display module for displaying the current UWB base station status; The UWB base station comprises: A base station network connection module connected to the server end; UWB module for communicating with mobile terminals and confirming location information; A base station control module for controlling the interaction between the mobile terminal and the UWB module; Wherein, the application software runs on a mobile terminal equipped with a UWB component; The data packet format for communication between the application software and the UWB base station includes: The first byte is used to identify the data packet type, where 0 indicates a positioning data packet and 1 indicates a product information data packet; The second to fifth bytes represent the sending timestamp; The sixth to ninth bytes represent the receiving timestamp; The tenth to thirteenth bytes represent the measured distance; the data packet sends a positioning data packet by default, which is used to update the terminal position in real time; When the location of the mobile terminal changes and there is product information that needs to be promoted, the server sends a product information data packet to the application software of the mobile terminal and displays it on the mobile terminal.

2. A shopping mall shopping guide system based on UWB according to claim 1, characterized in that: The UWB base stations are deployed at the entrances and exits of the shopping mall, elevator entrances and toilet doors.

3. The UWB-based shopping guide system according to claim 1, characterized in that: The controlling of UWB base station communication information and behavior includes: inputting instruction sets to control different behaviors.

4. The shopping guide method based on UWB in a shopping mall according to any one of claims 1 to 3, characterized in that: include: A mobile terminal with the application software installed enters the mall, and the UWB base station communicates bidirectionally with the UWB component of the mobile terminal to perform ranging and positioning; The application software displays the internal structure of the mall in the form of a three-dimensional map, identifies the location of the UWB base station and the real-time location of the mobile terminal, and displays information about stores nearby. If the product promotion switch of the application software is turned on, the UWB base station will push the promotion product information, discount advertisement description and the location of the corresponding store to the mobile terminal; The UWB base station and the UWB component on the mobile terminal communicate bidirectionally to perform ranging and positioning, including: The UWB base station sends broadcast information, and the mobile terminal responds after scanning and finding the UWB base station signal; The distance between the mobile terminal and the UWB base station is calculated through multiple two-way information exchanges, and the calculation formula is as follows: distance = flight arrival time ´ speed of light; According to the calculation results, the mobile terminal sends and receives data packets with the nearest UWB base station, and transmits data in real time; When it is found that the new UWB base station is closer than the current UWB base station, the mobile terminal sends an information data packet to the new base station and requests to establish data communication.

5. The method according to claim 4, characterized in that: The calculation formula for calculating the distance between the UWB module scanned by the mobile terminal and the UWB base station through multiple bidirectional information exchanges includes: ； T prop : The time difference of electromagnetic wave flight that needs to be measured; T round1 : The time difference between the first message sent and the second message sent on device A; T reply1 : The time difference between the first reply message and the second reply message on device B; T round2 : The time difference between the second and third message sending on device A; T reply2 : The time difference between the second and third reply messages on device B.

6. The method according to claim 4, characterized in that: After the application software is installed, the product promotion switch is turned on by default.

7. The method according to claim 4, characterized in that: The method for displaying store information near a location includes: The store's location information is stored in the server's database; The server obtains the real-time location of the mobile terminal through the UWB base station and compares the distance between the mobile terminal location and the store location; If the distance between a mobile terminal and a store near a UWB base station is less than a set value, the UWB base station pushes the store information to the mobile terminal.

8. The method according to claim 7, characterized in that: The set value is 100 meters.

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