RFID positioning system based on WIFI antenna

Abstract

The utility model discloses an RFID positioning system based on a WIFI antenna, and relates to the technical field of RFID positioning. The system comprises a sub-tag, an RFID reader-writer, a positioning device and a positioning server. The electronic tag comprises a tag wake-up circuit, a radio frequency module and a control module; the RFID reader-writer comprises a memory, a radio frequency transceiving module, a controller and a positioning module; the positioning device comprises a WIFI antenna, a microprocessor, a wireless communication module, a voice module, a memory and a touch display screen. The positioning server is provided with a visual software platform and is used for processing signals sent by the positioning equipment and displaying the specific positions of the electronic tags and the RFID reader-writers on an electronic map. According to the utility model, the electronic map is constructed through an actual scene, positioning processing is carried out according to the electronic tag information read by the RFID reader-writer, and visual display is carried out in the electronic map, so that the cost is low, the positioning precision is high, and the anti-interference capability is strong.

Description

Technical Field

[0001] The utility model belongs to the technical field of RFID positioning, and in particular relates to an RFID positioning system based on a WIFI antenna. Background Art

[0002] With the rapid development of wireless communication, the combination of wireless network and RFID technology for indoor positioning has attracted more and more attention. People's demand for the location of objects and people is becoming stronger and stronger. Outdoor positioning, such as the well-known GPS positioning, has achieved a level that satisfies many people, but once entering indoors, due to the obstruction of buildings and multipath effects, the effect of GPS positioning indoors is greatly reduced, so the research on indoor positioning has become the focus of subsequent research on positioning.

[0003] The traditional tag positioning distance is defective, which limits its wide application.

[0004] In response to the above problems, this application document proposes a combination of RFID technology and wireless network to expand its positioning range. Among them, the antenna Wi-Fi is in a free 2.4GHz frequency band and has a high data transmission speed. Therefore, a positioning tag based on Wi-Fi network communication is selected. The Wi-Fi network has the following advantages: the working frequency band of Wi-Fi is 2.4GHz, and it is in a free frequency band, and there is no additional cost for users; the transmission distance of Wi-Fi can reach 100m, which can cover the entire building; the transmission rate of Wi-Fi is very high, which can reach 54Mbps. Utility Model Content

[0005] The purpose of the utility model is to provide an RFID positioning system based on WIFI antenna, to construct an electronic map through actual scenes, to perform positioning processing according to the electronic tag information read by the RFID reader, and to display it visually in the electronic map, thereby solving the problems of high cost and poor positioning accuracy of the existing positioning system.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an RFID positioning system based on WIFI antenna, including an electronic tag, an RFID reader / writer, a positioning device and a positioning server;

[0008] The electronic tag includes a tag wake-up circuit, a radio frequency module and a control module; the tag wake-up circuit is respectively connected to the radio frequency module and the control module in pairs; the radio frequency module is connected to a WIFI antenna; the RFID reader includes a memory, a radio frequency transceiver module, a controller and a positioning module; the memory, the radio frequency transceiver module and the positioning module are all bidirectionally connected to the controller; the radio frequency transceiver module is connected to a WIFI antenna; the radio frequency signal is transmitted between the radio frequency module and the radio frequency transceiver module through the WIFI antenna; the positioning device includes a WIFI antenna, a microprocessor, a wireless communication module, a voice module, a memory and a touch display screen; information is transmitted between the positioning device and the radio frequency transceiver module through the WIFI antenna; the microprocessor is respectively bidirectionally connected to the WIFI antenna, the wireless communication module, the voice module, the memory and the touch display screen; the positioning device is bidirectionally connected to the positioning server through the wireless communication module; the positioning server is deployed with a visualization software platform for processing the signals sent by the positioning device and displaying the specific locations of the electronic tag and the RFID reader on an electronic map.

[0009] As a preferred technical solution, the positioning server is used to perform sampling management on electronic tags, RFID readers and positioning devices to monitor the operating status of electronic tags, RFID readers and positioning devices, and remotely modify parameters, configure, remotely set and restart the electronic tags, RFID readers and positioning devices;

[0010] The functions of the positioning server are as follows:

[0011] a. Tag command control: used for electronic tag communication and forwarding tag control commands;

[0012] b. Tag positioning: Based on a unique high-precision positioning algorithm, the tag position is accurately calculated according to the received wireless signal strength;

[0013] c. Tag alarm: Based on the information sent back, analyze the tag status, determine the triggering of the warning, and issue an alarm message in an emergency.

[0014] The main advantages of positioning servers are:

[0015] a. Users can monitor and manage positioning information in real time through a visual software interface, such as the real-time location of assets and personnel, location movement records, trajectory analysis and event management;

[0016] b. Users can use the software to virtually set up different areas in real places, such as setting up "no-entry areas", "alarm areas" and dividing the space into several virtual grid-shaped rooms;

[0017] c. Users can use the real-time positioning system to simultaneously track and manage the location of the target object;

[0018] d. Open architecture design, which can seamlessly integrate existing middleware, database, ERP system, workflow and other systems, and can also automatically monitor and report;

[0019] e. Through HTTP / XML application programming interface and SDK (software development kit), it can speed up the development and integration of application software using third-party systems.

[0020] As a preferred technical solution, the positioning server pre-plans a distribution map of RFID readers and positioning devices in the scene according to actual conditions, and sends the map to the memory of the positioning device.

[0021] As a preferred technical solution, an AP access point is also deployed in the scene. When an electronic tag enters the scene, the AP access point sends a wireless wake-up signal to wake up the tag wake-up circuit in the electronic tag. The AP access point (ACCESSPOINT) is a wireless HUB for wireless networks. The AP access point is the core of the wireless network and the access point for mobile computer users to enter the wired Ethernet backbone. The AP can be easily installed on the ceiling or wall. Its maximum coverage range in open space can reach 300 meters, and the wireless transmission rate can reach 11Mbps.

[0022] As a preferred technical solution, after the tag wake-up circuit in the electronic tag is awakened, the electronic tag compares its own ID number with the ID signal of the AP access point to see if they are consistent; if they are consistent, the electronic tag can be read by the RFID reader; if they are inconsistent, the electronic tag enters sleep mode again.

[0023] As a preferred technical solution, when the RFID reader obtains the electronic tag information, the positioning module locates the position of the electronic tag and sends it to the touch display screen for visual display.

[0024] The utility model has the following beneficial effects:

[0025] The utility model constructs an electronic map through actual scenes, performs positioning processing according to the electronic tag information read by the RFID reader, and performs visual display in the electronic map, which has low cost, high positioning accuracy and strong anti-interference ability.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the structure of an RFID positioning system based on a WIFI antenna of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] See also Figure 1 As shown, the utility model is an RFID positioning system based on WIFI antenna, including an electronic tag, an RFID reader / writer, a positioning device and a positioning server;

[0033] The electronic tag includes a tag wake-up circuit, a radio frequency module and a control module; the tag wake-up circuit is respectively connected to the radio frequency module and the control module in pairs; the radio frequency module is connected to a WIFI antenna; the RFID reader includes a memory, a radio frequency transceiver module, a controller and a positioning module; the memory, the radio frequency transceiver module and the positioning module are all bidirectionally connected to the controller; the radio frequency transceiver module is connected to a WIFI antenna; the radio frequency signal is transmitted between the radio frequency module and the radio frequency transceiver module through the WIFI antenna; the positioning device includes a WIFI antenna, a microprocessor, a wireless communication module, a voice module, a memory and a touch display screen; information is transmitted between the positioning device and the radio frequency transceiver module through the WIFI antenna; the microprocessor is respectively bidirectionally connected to the WIFI antenna, the wireless communication module, the voice module, the memory and the touch display screen; the positioning device is bidirectionally connected to the positioning server through the wireless communication module; the positioning server is deployed with a visualization software platform for processing the signals sent by the positioning device and displaying the specific locations of the electronic tag and the RFID reader on an electronic map.

[0034] The positioning server is used to perform sampling management on electronic tags, RFID readers and positioning devices, monitor the operating status of electronic tags, RFID readers and positioning devices, and remotely modify parameters, configure, remotely set and restart the electronic tags, RFID readers and positioning devices;

[0035] The functions of the positioning server are as follows:

[0036] a. Tag command control: used for electronic tag communication and forwarding tag control commands;

[0037] b. Tag positioning: Based on a unique high-precision positioning algorithm, the tag position is accurately calculated according to the received wireless signal strength;

[0038] c. Tag alarm: Based on the information sent back, analyze the tag status, determine the triggering of the warning, and issue an alarm message in an emergency.

[0039] The main advantages of positioning servers are:

[0040] a. Users can monitor and manage positioning information in real time through a visual software interface, such as the real-time location of assets and personnel, location movement records, trajectory analysis and event management;

[0041] b. Users can use the software to virtually set up different areas in real places, such as setting up "no-entry areas", "alarm areas" and dividing the space into several virtual grid-shaped rooms;

[0042] c. Users can use the real-time positioning system to simultaneously track and manage the location of the target object;

[0043] d. Open architecture design, which can seamlessly integrate existing middleware, database, ERP system, workflow and other systems, and can also automatically monitor and report;

[0044] e. Through HTTP / XML application programming interface and SDK (software development kit), it can speed up the development and integration of application software using third-party systems.

[0045] The positioning server plans the distribution map of RFID readers and positioning devices in the scene in advance according to the actual situation, and sends it to the memory of the positioning device.

[0046] AP access points are also deployed in the scene. When an electronic tag enters the scene, the AP access point sends a wireless wake-up signal to wake up the tag wake-up circuit in the electronic tag. AP access point (ACCESS POINT) is a wireless HUB used for wireless networks. AP access point is the core of the wireless network and the access point for mobile computer users to enter the wired Ethernet backbone. AP can be easily installed on the ceiling or wall. It has a maximum coverage range of 300 meters in open space and a wireless transmission rate of up to 11Mbps.

[0047] After the tag wake-up circuit in the electronic tag wakes up, the electronic tag compares its own ID number with the ID signal of the AP access point to see if they are consistent; if they are consistent, the electronic tag can be read by the RFID reader; if they are inconsistent, the electronic tag enters sleep mode again.

[0048] When the RFID reader obtains the electronic tag information, the positioning module locates the position of the electronic tag and sends it to the touch screen for visual display.

[0049] It is worth noting that in the above system embodiment, the various units included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present utility model.

[0050] In addition, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiments can be completed by instructing related hardware through a program, and the corresponding program can be stored in a computer-readable storage medium.

[0051] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An RFID positioning system based on WIFI antenna, comprising an electronic tag, an RFID reader / writer, a positioning device and a positioning server, characterized in that: The electronic tag comprises a tag wake-up circuit, a radio frequency module and a control module; the tag wake-up circuit is respectively connected to the radio frequency module and the control module in pairs; the radio frequency module is connected to a WIFI antenna; The RFID reader / writer includes a memory, a radio frequency transceiver module, a controller and a positioning module; the memory, the radio frequency transceiver module and the positioning module are all bidirectionally connected to the controller; the radio frequency transceiver module is connected to a WIFI antenna; the radio frequency signal is transmitted between the radio frequency module and the radio frequency transceiver module through the WIFI antenna; The positioning device includes a WIFI antenna, a microprocessor, a wireless communication module, a voice module, a memory and a touch display screen; the positioning device and the radio frequency transceiver module transmit information through the WIFI antenna; the microprocessor is bidirectionally connected to the WIFI antenna, the wireless communication module, the voice module, the memory and the touch display screen respectively; the positioning device is bidirectionally connected to the positioning server through the wireless communication module; The positioning server is deployed with a visualization software platform for processing the signals sent by the positioning device and displaying the specific locations of the electronic tags and RFID readers on an electronic map.

2. The RFID positioning system based on WIFI antenna according to claim 1, characterized in that: The positioning server is used to perform sampling management on electronic tags, RFID readers and positioning devices, to monitor the operating status of electronic tags, RFID readers and positioning devices, and to remotely modify parameters, configure, remotely set and restart the electronic tags, RFID readers and positioning devices.

3. The RFID positioning system based on WIFI antenna according to claim 1, characterized in that: The positioning server plans in advance the distribution map of the RFID readers and positioning devices in the scene according to the actual situation, and sends it to the memory of the positioning device.

4. The RFID positioning system based on WIFI antenna according to claim 3, characterized in that: An AP access point is also deployed in the scene. When an electronic tag enters the scene, the AP access point sends a wireless wake-up signal to wake up the tag wake-up circuit in the electronic tag.

5. The RFID positioning system based on WIFI antenna according to claim 4, characterized in that: After the tag wake-up circuit in the electronic tag wakes up, the electronic tag compares its own ID number with the ID signal of the AP access point to see if they are consistent; if they are consistent, the electronic tag can be read by the RFID reader; If they are inconsistent, the electronic tag will enter the sleep mode again.

6. The RFID positioning system based on WIFI antenna according to claim 1, characterized in that: When the RFID reader obtains the electronic tag information, the positioning module locates the position of the electronic tag and sends it to the touch display screen for visual display.

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