CN205958742U - Indoor navigation system - Google Patents

Abstract

An indoor navigation system provided by an embodiment of the utility model belongs to the field of wireless communication applications. The indoor navigation system includes a radio frequency device, a server, a router, a terminal and a wireless signal transmitter, the radio frequency device is connected to the server, the terminal is connected to the server through the router, and the wireless signal transmitter is connected to the The terminal is wirelessly connected, and the radio frequency device, the wireless signal transmitter and the router are all set indoors. The terminal obtains the location information collected by the radio frequency device from the server and stores it in the terminal, obtains the strength of the wireless signal emitted by the wireless signal transmitter in the room through the terminal, and judges the coordinates of the wireless signal transmitter through the strength of the wireless signal, thereby The position of the terminal is obtained according to the coordinates of the wireless signal transmitter, so as to obtain the path from the terminal to the radio frequency device, so that the user can quickly and accurately find the location of the radio frequency device according to the path.

Description

indoor navigation system

technical field

The utility model relates to the field of wireless communication applications, in particular to an indoor navigation system.

Background technique

In the existing research on navigation technology, it mainly focuses on outdoor navigation, while the research on indoor navigation, such as shopping malls and office buildings, is still relatively weak. Existing outdoor navigation systems generally implement navigation through the principle of GPS. However, when the user enters the room, the user's terminal cannot receive GPS satellite signals, so the method of realizing navigation through GPS positioning cannot play a role.

However, there are still many problems in the existing indoor navigation technology. For example, when the user wants to determine his own location, due to the unstable signal strength during communication and the influence of measurement errors caused by multipath and wall penetration, the The positioning is inaccurate, resulting in inaccurate navigation and inconvenient use of the navigation function, so that the user cannot accurately know the location of the item he needs or the location the user needs to reach. Therefore, it cannot meet the needs of practical applications.

Utility model content

The purpose of this utility model is to provide an indoor navigation system, which can improve the above problems.

Embodiments of the utility model are achieved in that:

An indoor navigation system, which includes a radio frequency device, a server, a router, a terminal and a wireless signal transmitter, the radio frequency device is connected to the server, the terminal is connected to the server through the router, and the wireless signal transmits The transmitter is wirelessly connected to the terminal, and the radio frequency device, the wireless signal transmitter and the router are all set indoors.

In the above-mentioned indoor navigation system provided by the utility model, the terminal obtains the location information collected by the radio frequency device from the server and stores it in the terminal, and the terminal is connected with the wireless signal transmitter to obtain the wireless signal emitted by the indoor wireless signal transmitter. The strength of the signal, the coordinates of the wireless signal transmitter are judged by the strength of the wireless signal, and the position of the terminal is obtained according to the coordinates of the wireless signal transmitter, so as to obtain the path from the terminal to the radio frequency device, so that the user can follow the path Quickly and accurately locate where RF devices are located.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the structural block diagram of the indoor navigation system that the preferred embodiment of the present invention provides;

Fig. 2 is a structural block diagram of the connection between the radio frequency device and the server in the indoor navigation system provided by the preferred embodiment of the present invention;

Fig. 3 is a structural block diagram of the connection between the radio frequency device and the server in the indoor navigation system provided by the preferred embodiment of the present invention;

Fig. 4 is a structural block diagram of the connection between the terminal and the server in the indoor navigation system provided by the preferred embodiment of the present invention;

FIG. 5 is a structural block diagram of a display device in the terminal shown in FIG. 4;

Fig. 6 is a structural block diagram of an indoor navigation system provided by a preferred embodiment of the present invention.

Summary of reference signs:

indoor navigation system 100;

radio frequency device 110; terminal 120; server 130; router 140; hub 150;

Wireless signal transmitter 160;

RF tag 111; RF antenna 112; reader 113;

Wireless sensor 121; Controller 122; Wireless connector 123;

data memory 124; display device 125;

processor 1251; display screen 1252.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the utility model is used. It is only for the convenience of describing the utility model and simplifying the description, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Referring to FIG. 1 , this embodiment provides an indoor navigation system 100 , which includes a radio frequency device 110 , a terminal 120 , a server 130 , a router 140 , a hub 150 and a wireless signal transmitter 160 .

Referring to FIG. 2 , the radio frequency device 110 is connected to the server 130 . The radio frequency device 110 is used to realize indoor item positioning.

Wherein, the radio frequency device 110 includes a radio frequency tag 111 , a radio frequency antenna 112 and a reader 113 . The radio frequency tag 111 is coupled to the radio frequency antenna 112 , the radio frequency antenna 112 is connected to the reader 113 , and the reader 113 is connected to the server 130 .

In this embodiment, the radio frequency tag 111 is placed on a fixed object indoors, so that the information of the measured object will not be confused during the measurement. Wherein, each radio frequency tag 111 has a fixed identification information. For example, if the radio frequency tags 111 are pasted on the shelves of the supermarket, the types of articles placed on the shelves are the same, and the radio frequency tags 111 pasted on different shelves are all different, that is, the radio frequency tags 111 pasted on the A shelf The identification information of is A, and may also be the type information of the items placed on the A shelf. The identification information of the radio frequency tag 111 attached on the B shelf is B, which may also be the category information of the items placed on the B shelf. Therefore, different radio frequency tags 111 can be used to determine specific locations of different items. When the position of the item with the radio frequency tag 111 or the carrier on which the radio frequency tag 111 is fixed changes, the radio frequency tag 111 will move along with the carrier on which the radio frequency tag 111 is fixed.

In this embodiment, the radio frequency tag 111 may be an RFID (Radio Frequency Identification) tag. Among them, RFID tags refer to tags using radio frequency identification technology.

In this embodiment, there may be multiple radio frequency tags 111, and the number of radio frequency tags 111 may be determined according to the number of carriers of the radio frequency tags 111 as required.

In this embodiment, the radio frequency antenna 112 is wirelessly connected with the radio frequency tag 111 .

In this embodiment, the radio frequency antenna 112 is used to collect the information of the radio frequency tag 111 , and the information includes the identification information of the radio frequency tag 111 and the intensity value of the radio frequency tag 111 . Wherein, the identification information of different radio frequency tags 111 and the strength values of the radio frequency tags 111 are collected through the radio frequency antenna, wherein the strength value of the radio frequency tags 111 is judged by the strength of the signal of the radio frequency tags 111 collected by the radio frequency antenna 112 . Wherein, in this embodiment, the signal strength of the radio frequency tag 111 may use RISS (Received Signal Strength Indication) to indicate the strength of the radio frequency tag 111 . That is, by setting the radio frequency tags 111 on different carriers in advance, so that the distances between the radio frequency tags 111 and the radio frequency antenna 112 are different, so that the signal strengths of the radio frequency tags 111 received by the radio frequency antenna 112 are different, thereby obtaining radio frequency The location of the tag 111, and then obtain the location of the carrier corresponding to the radio frequency tag 111.

Referring to FIG. 3 , in this embodiment, the radio frequency antenna 112 is connected to the hub 150 by wire. For example, the radio frequency antenna 112 may be connected to the hub 150 through a network cable. The radio frequency antenna 112 sends the collected information to the reader 113 through the hub 150 .

In this embodiment, the reader 113 is wirelessly connected to the hub 150 , that is, the hub 150 is connected to the hub 150 through the wireless network of the hub 150 . Wherein, the hub 150 can provide a 2.4G wireless channel to transmit the identification information and strength value of each radio frequency tag 111 collected by the radio frequency antenna 112 to the reader 113 . That is, the reader 113 obtains the identification information and strength value of each radio frequency tag 111 collected by the radio frequency antenna 112 through the 2.4G wireless channel provided by the hub 150 .

It should be noted that 2.4G is a wireless technology, because its frequency band is between 2.400GHz and 2.4835GHz.

In this embodiment, the reader 113 is connected to the server 130 through the hub 150 , that is, the card reader 113 is wirelessly connected to the server 130 through the hub 150 . The reader 113 sends the information obtained from the radio frequency antenna 112 to the server 130 , so that the server 130 stores the information sent by the reader 113 .

In this embodiment, the reader 113 is configured to send the identification information and the strength value of each radio frequency tag 111 collected by the radio frequency antenna 112 to the server 130 through the hub 150, so that the server 130 sends each radio frequency The identification information and intensity value of the tag 111 are stored. For example, the reader 113 is connected to a computer using UDP (User Datagram Protocol) communication mode, and then transmits data to the database. The terminal 120 can use HTTP (HyperTextTransfer Protocol) network communication to connect to the database, so as to download the data package to the terminal 120.

Please refer to FIG. 1 again. In this embodiment, the terminal 120 is used for positioning and realizing navigation through positioning, so as to find the item or location that the user needs to find through navigation. Wherein, the terminal 120 is connected to the server 130 through the router 140 , that is, the terminal 120 is connected to the server 130 through a wireless signal sent by the router 140 . The terminal 120 is wirelessly connected to the wireless signal transmitter 160 .

Referring to FIG. 4 , in this embodiment, the terminal 120 includes a wireless sensor 121 , a controller 122 , a display device 125 , a wireless connector 123 and a data storage 124 . The wireless sensor 121 is wirelessly connected with the wireless signal transmitter 160, the display device 125, the wireless sensor 121, the data storage 124 and the wireless connector 123 are all coupled with the controller 122, so The wireless connector 123 is connected to the server 130 through the router 140 , and the wireless connector 123 is connected to the router 140 wirelessly. That is, the wireless connector 123 is connected to the server 130 through the wireless signal sent by the router 140 .

In this embodiment, the wireless sensor 121 is used to detect the strength of the wireless signal in the room, that is, to detect the wireless signal sent by the wireless signal transmitter 160, and judge the strength of the signal through the wireless signal, thereby judging the strength value of the signal. The location of the wireless signal transmitter 160 . Then, the collected intensity value of the wireless signal transmitter 160 is sent to the controller 122 , so that the controller 122 further processes the information collected by the wireless sensor 121 .

In this embodiment, the wireless sensor 121 may be a WiFi (Wireless Fidelity) sensor.

In this embodiment, the frequency at which the wireless sensor 121 collects the intensity value of the wireless signal transmitted by the wireless signal transmitter 160 is less than or equal to 100 milliseconds. In this embodiment, preferably, the collection frequency of the wireless sensor 121 is 100 milliseconds .

In this embodiment, the controller 122 is used to process information collected by the wireless sensor 121 , control the display device 125 to display path image information, control the wireless connector 123 to connect with the router 140 and acquire data stored in the data memory 124 .

Wherein, the controller 122 can be a single-chip microcomputer, DSP (Digital Signal Processing, digital signal processing), ARM (Advanced RISC Machine, microprocessor) or FPGA (Field-Programmable Gate Array, Field Programmable Logic Gate Array), etc. processing chip. In this embodiment, no specific limitation is made.

In this embodiment, the wireless connector 123 is used to connect to the router 140 and connect to the server 130 through a wireless signal sent by the router 140 , that is, the wireless connector 123 is connected to the server 130 through the router 140 .

In this embodiment, the identification information and strength value of the radio frequency tag 111 stored in the radio frequency device 110 stored in the server 130 are acquired through the wireless connector 123, and the acquired identification information and strength value of the radio frequency tag 111 are passed through the controller 122 Stored in the data memory 124 for the controller 122 to call. When the identification information and strength value of the radio frequency tag 111 do not change, the wireless connector 123 will not repeatedly acquire the identification information and strength value of the radio frequency tag 111 stored in the server 130 .

In this embodiment, the data storage 124 is used to store the identification information and the strength value of the radio frequency tag 111 acquired by the wireless connector 123 from the server 130 . When the identification information and strength value of the radio frequency tag 111 are changed, the data memory 124 stores the changed identification information and strength value of the radio frequency tag 111 and replaces the original stored information. In order to reduce the storage space of the data storage 124, that is to make the utilization of the storage space of the data storage 124 larger, and to avoid repeated storage.

In this embodiment, the display device 125 is used to display the route image information between the terminal 120 and the target location. Wherein, the target position refers to the position of the item that the user needs to find or the position that the user needs to approach. The specific information of different locations is judged by the radio frequency tag 111 .

Referring to FIG. 5 , the display device 125 includes a display screen 1252 and a processor 1251 , the display screen 1252 is coupled to the processor 1251 , and the processor is coupled to the controller 122 .

In this embodiment, the processor 1251 is configured to process the location information of the terminal 120 and the target location information obtained by the controller 122 into image information, and send the image information to the display screen 1252, so that the display screen 1252 Display the image information. Wherein, the image information refers to a path image between the location of the terminal 120 and the target location. And the image information may change according to the change of the distance between the terminal 120 and the target location, that is, the image information is real-time information.

In this embodiment, the display screen 1252 is used to display the image information sent by the processor 1251 for the user to find the target position in the image according to the image information.

In this embodiment, preferably, the display screen 1252 is a touch display screen. By setting the display screen 1252 as a touch screen, the user can zoom in and zoom out on the image displayed on the display screen 1252, so that the user can find the target position more clearly.

Referring to FIG. 6 , the data storage 124 is coupled to the controller 122 , and the controller 122 is coupled to the display device 125 , the wireless sensor 121 and the wireless connector 123 respectively. The wireless sensor 121 is wirelessly connected with the wireless signal transmitter 160 . The wireless connector 123 is connected to the server 130 through the router 140 . The radio frequency tag 111 is wirelessly connected to the radio frequency antenna 112 , the radio frequency antenna 112 is wired to the hub 150 , and the reader 113 is wirelessly connected to the server 130 through the hub 150 .

In this embodiment, the server 130 is configured to store the identification information and strength value of the radio frequency tag 111 sent by the reader 113 .

In this embodiment, the server 130 may be a database. For example, the identification information and strength value of the radio frequency tag 111 sent by the reader 113 are stored in the database, so that the user can obtain the identification information and strength value of the radio frequency tag 111 stored in the database through the database.

In this embodiment, since the location information of the product does not change frequently, that is, the location information of the radio frequency tag 111 will not change accordingly, the database or the server 130 is set to update the information once a day.

In this embodiment, the router 140 is used to provide a wireless signal for the wireless connector 123 to connect to the server 130, and enable the data storage 124 to obtain the identification information of the radio frequency tag 111 stored in the server 130 through the wireless connector 123 with the intensity value.

In this embodiment, the hub 150 is used to provide a connection medium between the radio frequency antenna 112 and the reader 113, so that the identification information and strength value of the radio frequency tag 111 collected by the radio frequency antenna 112 can pass through The hub 150 sends to the reader 113 . Wherein, the hub 150 can transmit the identification information and intensity value of each radio frequency tag 111 collected by the radio frequency antenna 112 to the reader 113 through a 2.4G wireless channel. That is, the reader 113 obtains the identification information and strength value of each radio frequency tag 111 collected by the radio frequency antenna 112 through the 2.4G wireless channel provided by the hub 150 . For example, the ID and RSSI value of each RFID tag collected by the radio frequency antenna 120 is transmitted to the reader 140 through the 2.4G wireless channel of the hub 130 .

In this embodiment, the wireless signal transmitter 160 is used to provide a wireless signal, so that the terminal 120 can judge the specific location of the terminal 120 indoors according to the intensity value of the collected wireless signal.

In this embodiment, the wireless signal transmitter 160 may be an AP (AccessPoint) transmitter.

The working principle of the indoor navigation system 100 is as follows: firstly, the terminal 120 acquires wireless signals transmitted 160 by a plurality of wireless signal transmitters, obtains a reference signal according to the intensity values of the obtained multiple wireless signals, and converts the wireless signal corresponding to the reference signal to The emitter serves as a reference point. Further, a reference area is set according to the reference point, and identities of a preset number of wireless signal transmitters 160 in the reference area are searched. Further, the location coordinates corresponding to the identification of each wireless signal transmitter 160 to be searched are obtained according to the pre-acquired location correspondence table, wherein the location correspondence table includes the location corresponding to each wireless signal transmitter 160 coordinate. Further, starting position information is acquired according to the searched position coordinates of each of the wireless signal transmitters 160 and the corresponding strength of each of the wireless signals. Further, the location coordinates of the commodity to be selected are acquired, and the acquired location coordinates of the commodity to be selected are used as destination location information. Finally, a navigation route is generated according to the starting position information and the destination position information.

To sum up, the present utility model provides an indoor navigation system 100, which obtains the location information collected by the radio frequency device 110 from the server 130 through the terminal 120 and stores it in the terminal 120, and connects with the wireless signal transmitter 160 through the terminal 120, so as to Obtain the strength of the wireless signal transmitted by the wireless signal transmitter 160 in the room, judge the coordinates of the wireless signal transmitter 160 according to the strength of the wireless signal, and obtain the position of the terminal 120 according to the coordinates of the wireless signal transmitter 160, thereby obtaining the terminal 120 to the radio frequency device 110, so that the user can quickly and accurately find the location of the radio frequency device 110 according to the route.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a kind of indoor navigation system is it is characterised in that include：Radio-frequency unit, server, router, terminal and wireless signal Emitter, described radio-frequency unit is connected with described server, and described terminal is connected by described router with described server, institute State wireless signal transmitter to be connected with described terminal wireless, described radio-frequency unit, described wireless signal transmitter and described route Device is arranged at interior.

2. indoor navigation system according to claim 1 is it is characterised in that described radio-frequency unit includes radio-frequency (RF) tag, use In the radio-frequency antenna of collection radio frequency label information with for reading and writing the read write line of radio frequency label information, described radio-frequency (RF) tag with described Radio-frequency antenna couples, and described radio-frequency antenna is connected with described read write line, and described read write line is connected with described server.

3. indoor navigation system according to claim 2 is it is characterised in that described indoor navigation system also includes line concentration Device, described hub and described radio-frequency antenna wired connection, described hub is wirelessly connected with described read write line, described hub It is connected with described server.

4. indoor navigation system according to claim 2 is it is characterised in that described radio-frequency (RF) tag is arranged on described interior Article placement region, described radio-frequency (RF) tag is multiple.

5. indoor navigation system according to claim 1 is it is characterised in that described terminal includes wireless senser, display Device, controller, data storage and wireless connector, described wireless senser is wirelessly connected with described wireless signal transmitter Connect, described display device, described wireless senser, described data storage and described wireless connector all with described controller coupling Close, described wireless connector is connected by described router with described server, described wireless connector is with described router no Line connects.

6. indoor navigation system according to claim 5 is it is characterised in that described display device includes display screen and process Device, described display screen is coupled with described processor, and described processor is coupled with described controller.

7. indoor navigation system according to claim 6 is it is characterised in that described display screen is touch display screen.

8. indoor navigation system according to claim 7 is it is characterised in that the frequency acquisition of described wireless senser is less than Or it is equal to 100 milliseconds.

9. indoor navigation system according to claim 8 is it is characterised in that the frequency acquisition of described wireless senser is 100 milliseconds.

10. indoor navigation system according to claim 1 is it is characterised in that described wireless signal transmitter is distributed in institute State interior.