RFID anti-theft device

Abstract

The utility model relates to RFID anti-theft equipment which comprises a shell, an RFID antenna, an RFID reader-writer, a power module and a main control module. The shell is of a hollow structure and is of a flat body structure. The RFID antennas are ultrahigh frequency RFID antennas, the number of the RFID antennas is two or more, the RFID antennas are arranged in the shell, the multiple RFID antennas are arranged in the shell in the same direction, and the arrangement distance between the multiple RFID antennas is smaller than the thickness of the shell. The RFID antenna is in communication connection with the main control module; the RFID reader-writer is arranged in the shell, the RFID reader-writer is in communication connection with the RFID antenna, and the RFID reader-writer is in communication connection with the main control module; the RFID reader-writer and the main control module are both in communication connection with the power supply module. According to the RFID anti-theft device, the integrated design is adopted, it is guaranteed that the device can be conveniently assembled and installed in an integrated mode, the RFID anti-theft device can receive labels with weak RFID signals, and the requirements of users are met.

Description

Technical Field

[0001] The present application relates to the technical field of RFID anti-theft, and in particular to an RFID anti-theft device. Background Art

[0002] With the continuous development of electronic technology and communication technology, RFID technology has begun to be widely studied and applied. RFID technology has gone through a development process from low frequency (LF), high frequency (HF) to ultra-high frequency (UHF). Each generation of technology has incorporated new elements to achieve higher security, functionality and reliability.

[0003] Among them, RFID tags are small devices used to automatically identify and track objects. As the price of RFID tags decreases, commercial applications based on RFID technology in the retail industry are increasing. However, in some special scenarios, such as when the tags are attached to the inside of books or cosmetics, these products may absorb or interfere with the RFID signal, causing the signal to become weak or unstable. This makes it impossible to use conventional RFID anti-theft access control systems and it is difficult to play an anti-theft role. Utility Model Content

[0004] In view of this, the present application proposes an RFID anti-theft device to solve the above problems.

[0005] According to one aspect of the present application, there is provided an RFID anti-theft device, comprising: a housing, an RFID antenna, an RFID reader / writer, a power module and a main control module;

[0006] The shell is a hollow structure, and the shell is a flat structure;

[0007] The RFID antenna is an ultra-high frequency RFID antenna, and the number of the RFID antennas is two or more, the RFID antenna is arranged inside the shell, and multiple RFID antennas are arranged inside the shell in the same direction, and the setting distance between the multiple RFID antennas is less than the thickness of the shell; the RFID antenna is communicatively connected to the main control module;

[0008] The RFID reader is disposed inside the housing, and the RFID reader is communicatively connected to the RFID antenna, and the RFID reader is communicatively connected to the main control module;

[0009] The RFID reader / writer and the main control module are both communicatively connected with the power module.

[0010] In a possible implementation, the device further includes: an RFID feeder, through which the RFID antenna is bidirectionally connected to the RFID reader / writer, and the RFID antenna is a far-field RFID antenna suitable for receiving RFID tags with weak signals.

[0011] In a possible implementation, there are two RFID antennas, and the RFID antennas are circular, and the two RFID antennas are arranged parallel to the end surface of the shell.

[0012] In a possible implementation, the RFID antenna is disposed in the middle of the shell, and the two RFID antennas are correspondingly disposed at two opposite end surfaces of the shell, and the two opposite end surfaces of the shell are end surfaces with the largest cross-sectional area of ​​the shell.

[0013] In a possible implementation, it further includes: an alarm module; the alarm module has a light bar, a buzzer, and a speaker hole group;

[0014] The light bar is arranged on the end surface of the housing, the light bar is communicatively connected with the power module, and the light bar is communicatively connected with the main control module;

[0015] The buzzer is arranged inside the housing, the buzzer is connected to the power module for communication, and the buzzer is connected to the main control module for communication;

[0016] The speaker hole group is arranged on the end surface of the shell, and there are multiple speaker hole groups, and the speaker hole group is arranged close to the buzzer.

[0017] In a possible implementation, the number of the light bars is two, the light bars are arranged on the outer periphery of the shell, and the two light bars are symmetrically arranged on both sides of the end surface of the shell.

[0018] In a possible implementation, the shell has a square cross-section, and the RFID antenna is disposed at an upper portion of the shell, and the RFID reader / writer, the power module, and the alarm module are disposed at a lower portion of the shell relative to the RFID antenna.

[0019] In a possible implementation, the shell has a rectangular structure, and the corners of the shell are rounded; the setting direction of the light bar is parallel to the center line of the shell, and the speaker hole group is arranged at the lower part of the shell, the two groups of speaker holes are symmetrically arranged about the center line of the shell, and the speaker hole group is arranged in a circular dot matrix.

[0020] In a possible implementation, the RFID reader / writer is disposed adjacent to the power module, the power module is disposed adjacent to the alarm module, and the RFID reader / writer and the alarm module are disposed oppositely on the left and right sides of the power module.

[0021] Beneficial effects of this application:

[0022] The RFID anti-theft device proposed in this embodiment adopts an integrated design to ensure that the device can be conveniently integrated, assembled and installed, and the RFID anti-theft device can receive tags with weak RFID signals to meet the needs of users. By arranging multiple ultra-high frequency RFID antennas and corresponding RFID readers inside the hollow shell, the RFID antenna matches the RFID reader, and the RFID antenna is connected to the RFID reader. And because the shell is a flat body structure, that is, the thickness of the shell is much smaller than the length of the shell, and the thickness of the shell is also much smaller than the height of the shell. RFID antennas are arranged on both sides of the shell to improve the coverage and reading ability of the RFID signal. And here, it should be noted that the device uses a 12dbi far-field RFID antenna to identify the relatively weak tag signals in this scene. It should be noted that a high-performance RFID reader is selected to support high frequency (HF) and ultra-high frequency (UHF) bands to ensure compatibility with various types of RFID tags. And an integrated design is used to ensure that the device can be conveniently integrated, assembled and installed. It also provides a set of software to filter distant signals to reduce misreading, and defines the installation scenarios to ensure that there are basically no false alarms while ensuring the detection rate.

[0023] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 A front perspective structural diagram showing an RFID anti-theft device according to an embodiment of the present application;

[0026] Figure 2 A perspective view showing an RFID anti-theft device apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0028] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] like Figure 1 As shown, the RFID anti-theft device includes: a housing 100, an RFID antenna 200, an RFID reader / writer 300, a power module 400 and a main control module 500. The housing 100 is a hollow structure, and the housing 100 is a flat body structure. The RFID antenna 200 is an ultra-high frequency RFID antenna 200, and the number of the RFID antennas 200 is two or more, the RFID antenna 200 is arranged inside the housing 100, and multiple RFID antennas 200 are arranged inside the housing 100 in the same direction, and the setting distance between the multiple RFID antennas 200 is less than the thickness of the housing 100. The RFID antenna 200 is connected to the main control module 500 for communication. The RFID reader / writer 300 is arranged inside the housing 100, and the RFID reader / writer 300 is connected to the RFID antenna 200 for communication, and the RFID reader / writer 300 is connected to the main control module 500 for communication. The RFID reader / writer 300 and the main control module 500 are both connected to the power module 400 for communication.

[0033] The RFID anti-theft device proposed in this embodiment adopts an integrated design to ensure that the device can be conveniently integrated, assembled and installed, and the RFID anti-theft device can receive tags with weak RFID signals to meet the needs of users. By arranging multiple ultra-high frequency RFID antennas 200 and corresponding RFID readers 300 inside the hollow shell 100, the RFID antenna 200 matches the RFID reader 300, and the RFID antenna 200 is connected to the RFID reader 300 for communication. And because the shell 100 is a flat body structure, that is, the thickness of the shell 100 is much smaller than the length of the shell 100, and the thickness of the shell 100 is also much smaller than the height of the shell 100. RFID antennas 200 are arranged on both opposite sides of the shell 100 to improve the coverage and reading ability of the RFID signal. It should be noted that the device uses a 12dbi far-field RFID antenna 200 to identify the relatively weak tag signal in this scene. It should be noted that a high-performance RFID reader 300 is selected to support high frequency (HF) and ultra-high frequency (UHF) bands to ensure compatibility with various RFID tags. An integrated design is used to ensure that the device can be easily integrated, assembled and installed. A set of software is provided to filter distant signals to reduce misreading, and the installation scenario is defined. While ensuring the detection rate, there is basically no false alarm.

[0034] In addition, it should be noted that the software part involved in this application can be implemented through existing technologies, so it will not be described in detail in this embodiment.

[0035] In one specific embodiment, it further includes: an RFID feeder 600, through which the RFID antenna 200 is bidirectionally connected to the RFID reader 300, and the RFID antenna 200 is a far-field RFID antenna 200, which is suitable for receiving RFID tags with weak signals. In this embodiment, it should be noted that the RFID feeder 600 is generally a low-loss transmission line, which is used to efficiently transmit the radio frequency signal generated by the RFID reader 300 to the RFID antenna 200, and transmit the signal received by the RFID antenna 200 back to the RFID reader 300 for processing.

[0036] In one specific embodiment, the number of RFID antennas 200 is two, and the RFID antennas 200 are circular, and the two RFID antennas 200 are arranged parallel to the end face of the shell 100. In this embodiment, it should be noted that the RFID antenna 200 is a 12dbi antenna, and the 12dbi antenna is circular. Two 12dbi high-gain antennas are used and are respectively installed on both sides of the access control device to improve the coverage and reading distance of the RFID signal. It should be further noted that a lead 800 extends from the periphery of the RFID antenna 200, and the RFID lead 800 is arranged inside the shell 100. The two ends of the RFID lead 800 are connected to the RFID antenna 200, and the RFID lead 800 fixedly supports the RFID antenna 200.

[0037] In one specific embodiment, the RFID antenna 200 is disposed in the middle of the housing 100, and the two RFID antennas 200 are correspondingly disposed at the two opposite end faces of the housing 100, and the two opposite end faces of the housing 100 are the end faces with the largest cross-sectional area of ​​the housing 100. In this embodiment, it should be noted that the RFID antennas 200 on both sides can identify RFID tags with weak signals, thereby improving the detection efficiency. And when one of the RFID antennas 200 is damaged, it does not affect the use of the entire RFID anti-theft device.

[0038] In one of the specific embodiments, it also includes: an alarm module. The alarm module has a light bar 720, a buzzer 710 and a speaker hole group 730. The light bar 720 is arranged on the end face of the housing 100, and the light bar 720 is connected to the power module 400 for communication, and the light bar 720 is connected to the main control module 500 for communication. The buzzer 710 is arranged inside the housing 100, and the buzzer 710 is connected to the power module 400 for communication, and the buzzer 710 is connected to the main control module 500 for communication. The speaker hole group 730 is arranged on the end face of the housing 100, and there are multiple speaker hole groups 730, and the speaker hole group 730 is arranged close to the buzzer 710. In this embodiment, it should be noted that when abnormal situations such as illegal intrusion and equipment failure occur, the alarm mechanism is automatically triggered to ensure the safety and stability of the access control device.

[0039] In one specific embodiment, the number of the light bars 720 is two, and the light bars 720 are arranged on the outer periphery of the housing 100 . The two light bars 720 are symmetrically arranged on both sides of the end surface of the housing 100 .

[0040] In one specific embodiment, the cross-section of the shell 100 is square, and the RFID antenna 200 is arranged at the upper part of the shell 100, and the RFID reader 300, the power module 400 and the alarm module are arranged at the lower part of the shell 100 relative to the RFID antenna 200.

[0041] In one specific embodiment, the housing 100 is a rectangular parallelepiped structure, and the corners of the housing 100 are rounded. The light bar 720 is arranged in a direction parallel to the center line of the housing 100, and the speaker hole group 730 is arranged at the lower part of the housing 100, and the two groups of speaker holes are arranged symmetrically about the center line of the housing 100, and the speaker hole group 730 is arranged in a circular dot matrix.

[0042] In one specific embodiment, the RFID reader 300 is disposed adjacent to the power module 400 , the power module 400 is disposed adjacent to the alarm module, and the RFID reader 300 and the alarm module are disposed on the left and right sides of the power module 400 opposite to each other.

[0043] In summary, it should be noted that the present invention uses an ultra-high frequency chip in the anti-theft access control device, and the chip frequency is between 825MHZ-925MHZ. At the same time, combined with the differentiated needs of the tags, the algorithm can be adjusted; the anti-theft system processes the received data, and establishes a cloud server, and uploads and manages the data through the cloud data intelligent platform, relying on a set of management software systems built on the big data cloud platform to realize retail intelligence. Conventional RFID anti-theft devices on the market have relatively high requirements for the signal continuity and strength of the tag, and require continuous signals combined with algorithms to determine the relative distance of the tag.

[0044] There are significant advantages to using high-dbi (decibel isotropic) RFID (radio frequency identification) antennas to read weak-signal RFID tags. It can enhance signal strength: The high-dbi antenna design can radiate and receive RF signals more concentratedly, thereby increasing the strength of the signal. When the signal strength is enhanced, the response signal of the weak-signal RFID tag will also be enhanced accordingly, making it easier to be captured and identified by the reader. It can also reduce signal interference: In complex environments, RF signals are susceptible to interference from various factors, such as signals from other wireless devices, metal objects, etc. High-dbi RFID antennas can reduce these interferences to a certain extent and improve the accuracy and stability of reading through their powerful signal transmission and reception capabilities. It can improve reading efficiency: Because high-dbi RFID antennas can cover a wider area and enhance signal strength, they can read target tags faster. This not only improves reading efficiency, but also reduces repeated operations and time waste caused by failed reads. It can optimize tag positioning: In some application scenarios, it is necessary to accurately locate the position of RFID tags. High-dbi RFID antennas can achieve more accurate tag positioning through their precise RF signal coverage and reception capabilities. This is particularly useful for applications that require precise management of assets or goods.

[0045] In short, using a high-dbi RFID antenna to read weak-signal RFID tags can significantly improve the reading distance, enhance signal strength, reduce signal interference, improve reading efficiency, and optimize tag positioning, thereby providing better solutions in various application scenarios. The main control module uses an Android system device with powerful processing power and stable performance as the control center of the access control device. Network interfaces and storage devices are also set up on the shell to ensure the normal operation and data storage of the access control device. Software design Android system customization: According to the needs of the access control device, the Android system is customized and developed, including interface design, function integration, etc. Among them, the driver of the RFID reader is developed to realize communication and data transmission with the Android system. Access control management software: Develop access control management software to realize user management, access control, data storage and other functions.

[0046] During the specific implementation, firstly, we will select and assemble and debug hardware such as RFID readers, antennas, and Android system devices according to the design plan. We will also customize the development of Android systems, RFID reader drivers, and access control management software according to the needs. Secondly, before installing the access control equipment, we will conduct a comprehensive test on the system to ensure the normal operation of all functions. And we need to install the access control equipment in the designated location, and conduct on-site debugging and testing to ensure the stable operation of the system. And we need to regularly inspect and maintain the access control equipment to ensure the normal operation and safety of the equipment. And we need to regularly back up the operating data and user information of the access control equipment to prevent data loss or damage. We will also upgrade and update the access control equipment according to user needs and technological development to improve the performance and safety of the system. RFID is a wireless radio frequency identification technology.

[0047] It should be noted that, although the present application is used as an example to introduce the RFID anti-theft device as above, those skilled in the art will appreciate that the present application should not be limited thereto. In fact, the user can flexibly set parameters according to personal preferences and / or actual application scenarios, as long as they are reasonable.

[0048] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An RFID anti-theft device, characterized in that: include: Housing, RFID antenna, RFID reader / writer, power module and main control module; The shell is a hollow structure, and the shell is a flat structure; The RFID antenna is an ultra-high frequency RFID antenna, and the number of the RFID antennas is two or more, the RFID antenna is arranged inside the shell, and multiple RFID antennas are arranged inside the shell in the same direction, and the setting distance between the multiple RFID antennas is less than the thickness of the shell; the RFID antenna is communicatively connected to the main control module; The RFID reader is disposed inside the housing, and the RFID reader is communicatively connected to the RFID antenna, and the RFID reader is communicatively connected to the main control module; The RFID reader / writer and the main control module are both communicatively connected with the power module.

2. The RFID anti-theft device according to claim 1, characterized in that: Also includes: RFID feeder, the RFID antenna is connected to the RFID reader / writer in a two-way communication manner through the RFID feeder, and the RFID antenna is a far-field RFID antenna, which is suitable for receiving RFID tags with weak signals.

3. The RFID anti-theft device according to claim 1, characterized in that: The number of the RFID antennas is two, and the RFID antennas are circular. The two RFID antennas are arranged parallel to the end surface of the shell.

4. The RFID anti-theft device according to claim 1, characterized in that: The RFID antenna is arranged in the middle of the shell, and the two RFID antennas are correspondingly arranged at two opposite end surfaces of the shell, and the two opposite end surfaces of the shell are the end surfaces of the shell with the largest cross-sectional area.

5. The RFID anti-theft device according to any one of claims 1 to 4, characterized in that: Also includes: Alarm module; the alarm module has a light bar, a buzzer and a speaker hole group; The light bar is arranged on the end surface of the housing, the light bar is communicatively connected with the power module, and the light bar is communicatively connected with the main control module; The buzzer is arranged inside the housing, the buzzer is communicatively connected with the power module, and the buzzer is communicatively connected with the main control module; The speaker hole group is arranged on the end surface of the shell, and there are multiple speaker hole groups, and the speaker hole group is arranged close to the buzzer.

6. The RFID anti-theft device according to claim 5, characterized in that: The number of the light bars is two, and the light bars are arranged on the outer periphery of the shell, and the two light bars are symmetrically arranged on both sides of the end surface of the shell.

7. The RFID anti-theft device according to claim 6, characterized in that: The cross section of the shell is square, and the RFID antenna is arranged at the upper part of the shell, and the RFID reader / writer, the power module and the alarm module are arranged at the lower part of the shell relative to the RFID antenna.

8. The RFID anti-theft device according to claim 7, characterized in that: The shell has a rectangular structure, and the corners of the shell are rounded; the setting direction of the light bar is parallel to the center line of the shell, and the speaker hole group is set at the lower part of the shell, the two groups of speaker holes are symmetrically arranged about the center line of the shell, and the speaker hole group is arranged in a circular dot matrix.

9. The RFID anti-theft device according to claim 8, characterized in that: The RFID reader / writer is arranged adjacent to the power module, the power module is arranged adjacent to the alarm module, and the RFID reader / writer and the alarm module are arranged oppositely on the left and right sides of the power module.

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