Method for quickly establishing a correspondence between passive rfid tags, article management system and rfid reading system

Abstract

The present disclosure relates to the technical field of radio frequency application, in particular to a method for quickly establishing a corresponding relationship between passive RFID tags, an article management system and an RFID reading system. The method comprises: when a specified first passive RFID tag in a first passive RFID tag group is close to a specified second passive RFID tag in a second passive RFID tag group, the specified first passive RFID tag is in an active state; at this time, the specified second passive RFID tag is activated by using the specified first passive RFID tag; the RFID reading system acquires position information of a preset position corresponding to the specified second passive RFID tag, and establishes a corresponding relationship between the two passive RFID tags. The present disclosure realizes the activation of only one passive RFID tag at a time in a multi-tag deployment environment, and the activated passive RFID tag can be used to achieve accurate positioning of the tag.

Description

Technical Field

[0001] This disclosure relates to the field of radio frequency application technology, specifically to a method for rapidly establishing correspondence between passive RFID (Radio Frequency Identification) tags, an item management system, and an RFID reading system. Background Technology

[0002] With the continuous development of RFID technology, its application in item location has permeated various scenarios, with RFID smart filing cabinets being a typical example. The core functions of this filing cabinet include: quickly locating the file's position, real-time recording of file issuance and return, automatic inventory of file quantity, and monitoring of its status. Specifically, each file is equipped with an RFID tag. When a user enters the file's number or name on the smart filing cabinet's screen, the system responds quickly, using the antenna and reader inside the cabinet to obtain the file's location information, thus achieving rapid file location.

[0003] exist Figure 1 In the intelligent filing cabinet system shown, the coverage area of ​​one antenna can typically cover multiple filing boxes, thus enabling only regional positioning and not pinpointing the exact location of each file. This is because the antenna's design and operating principle determine its signal coverage range. Within a given area, when the antenna's emitted radio frequency signal encounters multiple filing boxes with RFID tags, these RFID tags will simultaneously respond and return their information. However, due to signal attenuation and interference during propagation in space, as well as potential mutual interference between different RFID tags (such as collisions), the reading system / computer system struggles to accurately distinguish the precise location of each RFID tag. In densely packed storage environments, such as when multiple filing boxes are closely arranged, these factors further reduce the accuracy of signal reading.

[0004] Therefore, determining the exact location of each file requires adding independent antennas. For example, a small antenna could be installed on the side of each file box, with a coverage area small enough to cover only one file box. The file's location would then be determined by the placement of each small antenna. This significantly increases the system's hardware cost and complexity. Furthermore, this approach has a serious drawback: the coverage of the added independent antennas must be controllable, preventing them from reading adjacent file tags. As the thickness of the files decreases, the antenna design becomes increasingly difficult and impractical, making it impossible to ensure that each antenna can only read one file tag. Summary of the Invention

[0005] To address the problems in related technologies, this disclosure provides a method for rapidly establishing correspondence between passive RFID tags, an item management system, and an RFID reading system.

[0006] In a first aspect, this disclosure provides a method for rapidly establishing a correspondence between passive RFID tags, including:

[0007] When a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the designated first passive RFID tag is within the coverage area of ​​the RFID antenna of the RFID reading system, thereby causing the designated first passive RFID tag to switch from a non-working state to a working state. The first passive RFID tag group includes multiple first passive RFID tags in a non-working state, and the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The second passive RFID tag group includes multiple second passive RFID tags respectively set at multiple predetermined positions, and the second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state.

[0008] The RFID reading system acquires the first identification information of the designated first passive RFID tag and saves the first identification information;

[0009] The designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state;

[0010] The RFID reading system acquires the second identification information of the designated second passive RFID tag and saves the second identification information;

[0011] The RFID reading system acquires the location information of the predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

[0012] According to embodiments of this disclosure, the first passive RFID tag includes an activation component;

[0013] When the designated first passive RFID tag changes from a non-working state to a working state, the activation component of the designated first passive RFID tag is activated.

[0014] According to embodiments of this disclosure, the second passive RFID tag includes a component to be activated;

[0015] The activation of the designated second passive RFID tag by the designated first passive RFID tag includes: when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag, the designated first passive RFID tag activates the designated second passive RFID tag.

[0016] According to an embodiment of this disclosure, the activation component of the first passive RFID tag is an optical signal transmitting component;

[0017] The component to be activated in the second passive RFID tag is an optical signal receiving component.

[0018] According to an embodiment of this disclosure, the step of activating the designated second passive RFID tag when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag includes: activating the designated second passive RFID tag when the optical signal transmitting component of the designated first passive RFID tag approaches the optical signal receiving component of the designated second passive RFID tag.

[0019] According to an embodiment of this disclosure, the activation component of the first passive RFID tag is a plug component;

[0020] The component to be activated in the second passive RFID tag is an interface component that matches the plug component.

[0021] According to an embodiment of this disclosure, the step of activating the designated second passive RFID tag when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag includes: activating the designated second passive RFID tag when the plug component of the designated first passive RFID tag is inserted into the interface component of the designated second passive RFID tag.

[0022] According to an embodiment of this disclosure, the second passive RFID tag further includes an impedance matching circuit; the tag chip and tag antenna of the second passive RFID tag are connected to the impedance matching circuit and the component to be activated to form a closed circuit of the second passive RFID tag.

[0023] When the designated second passive RFID tag is in an inactive state, the closed circuit of the designated second passive RFID tag is in an open state or a high-impedance state.

[0024] When the designated second passive RFID tag is in an active state, the closed circuit of the designated second passive RFID tag is in a conductive state.

[0025] According to an embodiment of this disclosure, the second passive RFID tag stores location information corresponding to a predetermined location;

[0026] or

[0027] The RFID reading system pre-stores location information corresponding to a predetermined location of the second passive RFID tag.

[0028] Secondly, this disclosure provides a method for rapidly establishing a correspondence between RFID tags, applied to an RFID reading system, wherein the RFID reading system includes an RFID antenna, and the method includes:

[0029] The RFID antenna sends radio frequency signals to a designated first passive RFID tag that is close to the designated second passive RFID tag and obtains the corresponding first identification information, and saves the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively set at multiple predetermined positions. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state.

[0030] The RFID antenna sends a radio frequency signal to a designated second passive RFID tag activated by the designated first passive RFID tag and obtains the corresponding second identification information, and saves the second identification information.

[0031] Obtain the location information of the predetermined location corresponding to the designated second passive RFID tag, and establish the correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

[0032] According to embodiments of this disclosure, the first passive RFID tag includes an activation component, and the second passive RFID tag includes a component to be activated.

[0033] According to embodiments of this disclosure, the activating component is an optical signal transmitting component, and the component to be activated is an optical signal receiving component;

[0034] or

[0035] The activation component is a plug component, and the component to be activated is an interface component that matches the plug component.

[0036] Thirdly, this disclosure provides an item management system, including: an RFID reading system, a first passive RFID tag group, and a second passive RFID tag group;

[0037] The RFID reading system includes an RFID antenna; the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna, and the first passive RFID tag group includes multiple first passive RFID tags in a non-working state, and the multiple first passive RFID tags are respectively disposed on multiple items; the second passive RFID tag group includes multiple second passive RFID tags respectively disposed at multiple predetermined positions, and the second passive RFID tags are within the coverage area of ​​the RFID antenna and are in an inactive state.

[0038] When a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the RFID reading system sends a radio frequency signal to the designated first passive RFID tag through the RFID antenna, thereby causing the designated first passive RFID tag to switch from a non-working state to a working state.

[0039] The RFID reading system acquires the first identification information of the designated first passive RFID tag and saves the first identification information;

[0040] The designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state;

[0041] The RFID reading system acquires the second identification information of the designated second passive RFID tag and saves the second identification information;

[0042] The RFID reading system acquires location information of a predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information; and manages items equipped with the designated first passive RFID tag based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag.

[0043] According to embodiments of this disclosure, the management of items equipped with the designated first passive RFID tag based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag includes:

[0044] Based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag, the correspondence between the item with the designated first passive RFID tag and the location information of the predetermined location corresponding to the designated second passive RFID tag is obtained, so as to use the corresponding location information as the location information of the item with the designated first passive RFID tag.

[0045] According to embodiments of this disclosure, the article is any one of the following:

[0046] File boxes, data cables, folders.

[0047] According to embodiments of this disclosure, the first passive RFID tag includes an activation component, and the second passive RFID tag includes a component to be activated.

[0048] According to embodiments of this disclosure, the activating component is an optical signal transmitting component, and the component to be activated is an optical signal receiving component;

[0049] or

[0050] The activation component is a plug component, and the component to be activated is an interface component that matches the plug component.

[0051] Fourthly, embodiments of this disclosure provide an RFID reading system, including: a reader, an RFID antenna, and a back-end data processing system;

[0052] The reader / writer is used to send radio frequency signals to a designated first passive RFID tag that is close to a designated second passive RFID tag via the RFID antenna and obtain corresponding first identification information, and save the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively set at multiple predetermined positions. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state.

[0053] The reader is also used to send radio frequency signals to a designated second passive RFID tag activated by the designated first passive RFID tag through the RFID antenna and obtain the corresponding second identification information, and save the second identification information;

[0054] The backend data processing system is used to save the first identification information and the second identification information, and to obtain the location information of the predetermined location corresponding to the designated second passive RFID tag. Based on the first identification information and the second identification information, the system establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag.

[0055] Fifthly, embodiments of this disclosure provide a computer-readable storage medium having computer instructions stored thereon that, when executed by a processor, implement the method as described in any of the second aspects.

[0056] In a sixth aspect, this disclosure provides a computer program product including computer instructions that, when executed by a processor, implement the method as described in any of the second aspects.

[0057] According to the technical solution provided in this disclosure, when a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the designated first passive RFID tag is placed within the coverage area of ​​the RFID antenna of the RFID reading system, thereby changing from a non-working state to a working state. At this time, the designated second passive RFID tag is activated by the designated first passive RFID tag in the working state, causing the designated second passive RFID tag to change from an inactive state to an active state. The RFID reading system obtains the first and second identification information corresponding to the designated first and designated second passive RFID tags, as well as the location information of the preset position corresponding to the designated second passive RFID tag, and establishes the correspondence between the designated first passive RFID tag and the designated second passive RFID tag.

[0058] This disclosure enables the activation of another passive RFID tag at a known location but which is inactive by a passive RFID tag initially inactive, thereby quickly establishing a correspondence between the two passive tags. This allows only one passive tag at a known location to be activated at any given time in a multi-tag (known location) deployment environment. Based on the established correspondence, the location of another passive tag at an unknown location can be quickly and accurately located. For example, when this unknown passive tag is applied to an item (e.g., a file), the location of the item can be quickly located without the need for numerous separate antennas, greatly reducing hardware costs and complexity.

[0059] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0060] Other features, objects, and advantages of this disclosure will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0061] Figure 1 A schematic diagram of an intelligent filing cabinet system in the prior art is shown;

[0062] Figure 2 A flowchart illustrating a method for rapidly establishing a correspondence between passive RFID tags according to an embodiment of the present disclosure is shown.

[0063] Figure 3 A circuit connection diagram of a first passive RFID tag according to an embodiment of the present disclosure is shown;

[0064] Figure 4 A circuit connection diagram of a second passive RFID tag according to an embodiment of this disclosure is shown;

[0065] Figure 5 A circuit connection diagram of another first passive RFID tag in an embodiment of this disclosure is shown;

[0066] Figure 6 A circuit connection diagram of another second passive RFID tag in an embodiment of this disclosure is shown;

[0067] Figure 7 A flowchart illustrating another method for rapidly establishing a correspondence between passive RFID tags according to an embodiment of the present disclosure;

[0068] Figure 8 This diagram illustrates the structure of an item management system according to an embodiment of the present disclosure;

[0069] Figure 9 A schematic diagram of the structure of an RFID reading system according to an embodiment of the present disclosure is shown;

[0070] Figure 10 A schematic diagram of the structure of a computer system suitable for implementing another method for rapidly establishing correspondence between passive RFID tags according to an embodiment of the present disclosure is shown. Detailed Implementation

[0071] In the following, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings to enable those skilled in the art to readily implement them. Furthermore, for clarity, portions unrelated to the description of exemplary embodiments have been omitted from the drawings.

[0072] In this disclosure, it should be understood that terms such as “comprising” or “having” are intended to indicate the presence of features, figures, steps, behaviors, components, parts or combinations thereof disclosed in this specification, and are not intended to exclude the possibility of the presence or addition of one or more other features, figures, steps, behaviors, components, parts or combinations thereof.

[0073] It should also be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0074] In this disclosure, any operation involving the acquisition of user information or user data, or the display of user information or user data to others, is an operation authorized or confirmed by the user, or actively selected by the user.

[0075] As mentioned earlier, although RFID technology for item location has been widely used, there are still some problems that cannot be ignored. Let's take an RFID smart filing cabinet as an example:

[0076] In RFID smart filing cabinets, the coverage area of ​​a single RFID antenna typically covers multiple file boxes, thus enabling only regional positioning and not pinpointing the exact location of each file. This is because the antenna's design and operating principle determine its signal coverage range. Within a given area, when the radio frequency signal emitted by the RFID antenna encounters multiple file boxes with RFID tags, these tags will simultaneously respond and return their information. However, due to signal attenuation and interference during propagation in space, as well as potential mutual interference between different RFID tags (such as collisions), the reading system / computer system struggles to accurately distinguish the precise location of each RFID tag. In densely packed storage environments, this accuracy is further reduced, making it impossible to determine the specific location of each file.

[0077] After research, the inventors discovered that to determine the location of each file, an independent antenna would need to be added to the location of each file. However, this would significantly increase hardware costs and complexity. Furthermore, there are serious drawbacks to locating each file simply by adding an independent antenna. The coverage area of ​​the added independent antenna must be controllable and cannot read adjacent file tags. As the thickness of the files decreases, the difficulty of antenna design increases dramatically and becomes impossible, as it is not possible for an antenna to read only one file tag.

[0078] To address the above problems, this disclosure provides a method for rapidly establishing a correspondence between passive RFID tags, comprising: when a designated first passive RFID tag in a first passive RFID tag group approaches a designated second passive RFID tag in a second passive RFID tag group, the designated first passive RFID tag is within the coverage area of ​​the RFID antenna of the RFID reading system, thereby causing the designated first passive RFID tag to switch from a non-operating state to an operating state. The first passive RFID tag group includes multiple first passive RFID tags in a non-operating state, and the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The second passive RFID tag group includes multiple second passive RFID tags respectively disposed at multiple predetermined locations. The RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state; the RFID reading system acquires and saves the first identification information of the designated first passive RFID tag; the designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state; the RFID reading system acquires and saves the second identification information of the designated second passive RFID tag; the RFID reading system acquires the location information of the predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

[0079] This disclosure enables the rapid establishment of a correspondence between two passive tags in a multi-tag deployment environment, ensuring that only one passive tag with a known location is activated at any given time. This allows for the rapid and accurate location of another passive tag with an unknown location based on the established correspondence. For example, when this other passive tag with an unknown location is applied to an item (e.g., a file), the location of the item can be quickly determined without the need to set up a large number of separate antennas, which greatly reduces hardware costs and complexity.

[0080] Figure 2 A flowchart illustrating a method for rapidly establishing a correspondence between passive RFID tags according to an embodiment of this disclosure is shown. Figure 2 As shown, the method includes the following steps S201 to S205:

[0081] In step S201, when a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the designated first passive RFID tag is within the coverage area of ​​the RFID antenna of the RFID reading system, thereby causing the designated first passive RFID tag to change from a non-working state to a working state.

[0082] According to embodiments of this disclosure, the RFID reading system includes an RFID antenna.

[0083] According to embodiments of this disclosure, the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna and includes multiple first passive RFID tags in a non-operating state. The designated first passive RFID tag is any one of the passive RFID tags in the first passive RFID tag group.

[0084] According to embodiments of this disclosure, the second passive RFID tag group includes a plurality of second passive RFID tags respectively disposed at a plurality of predetermined locations. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state. The designated second passive RFID tag is any passive RFID tag in the second passive RFID tag group.

[0085] Specifically, each first passive RFID tag is a normally functioning passive tag, but because it is outside the coverage area of ​​the RFID antenna, it cannot be recognized by the RFID reading system. Only when the designated first passive RFID tag approaches the designated second passive RFID tag, since the designated second passive RFID tag is within the coverage area of ​​the RFID antenna, the designated first passive RFID tag is also correspondingly within the coverage area of ​​the RFID antenna, thereby being able to obtain the energy (i.e., radio frequency signal) provided by the RFID antenna through the RFID reading system and switch from a non-working state to a working state.

[0086] Figure 3 This diagram illustrates the circuit connection of a first passive RFID tag according to an embodiment of the present disclosure. Figure 3 As shown, the first passive RFID tag includes an activation component, which is connected to the tag chip and tag antenna of the first passive RFID tag to form a closed circuit of the first passive RFID tag.

[0087] According to an embodiment of this disclosure, when the designated first passive RFID tag changes from a non-working state to a working state, the activation component of the designated first passive RFID tag is activated.

[0088] In detail, when the designated first passive RFID tag enters the reading range of the RFID reading system, the RFID reading system emits radio frequency electromagnetic waves through the RFID antenna. After the tag antenna of the designated first passive RFID tag receives these electromagnetic waves, it generates alternating voltage or current through electromagnetic induction. After the alternating voltage or current is rectified, it can provide a stable power supply for the designated first passive RFID tag. When sufficient energy is received, the closed circuit of the designated first passive RFID tag is turned on, and the tag chip and activation component will start to work.

[0089] In step S202, the RFID reading system acquires and saves the first identification information of the designated first passive RFID tag. The first identification information may be the tag ID of the designated first passive RFID tag.

[0090] In step S203, the designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state.

[0091] Specifically, each second passive RFID tag has a known predetermined location and is initially in an inactive state. That is, although the second passive RFID tag is within the coverage area of ​​the RFID antenna, it cannot be identified by the RFID reading system because it is in an inactive state. Only when it is activated by the designated first passive RFID tag will the designated second passive RFID tag change from an inactive state to an active state and thus be identified by the RFID reading system.

[0092] Figure 4 This diagram illustrates the circuit connection of a second passive RFID tag according to an embodiment of the present disclosure.

[0093] like Figure 4 As shown, the second passive RFID tag includes a component to be activated; the activation of the designated second passive RFID tag by the designated first passive RFID tag includes: when the activation component of the designated first passive RFID tag approaches the component to be activated of the designated second passive RFID tag, the designated first passive RFID tag activates the designated second passive RFID tag.

[0094] According to an embodiment of this disclosure, the second passive RFID tag further includes an impedance matching circuit; the tag chip and tag antenna of the second passive RFID tag are connected to the impedance matching circuit and the component to be activated to form a closed circuit of the second passive RFID tag.

[0095] By incorporating impedance matching circuits into passive tags, the sensitivity of passive tags to radio frequency signals emitted by RFID reading systems can be improved. This also helps optimize the overall performance of closed circuits. By adjusting the impedance of closed circuits, power loss, signal reflection, and interference can be reduced, ensuring that the activated components can operate accurately and stably.

[0096] According to embodiments of this disclosure, when the designated second passive RFID tag is in an inactive state, the closed circuit of the designated second passive RFID tag is in an open state or a high-impedance state; when the designated second passive RFID tag is in an active state, the closed circuit of the designated second passive RFID tag is in a conductive state.

[0097] In detail, when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag, the activation component is activated by the activation component, thereby turning on the closed circuit of the designated second passive RFID tag. The designated second passive RFID tag changes from an inactive state to an active state. At this time, since the designated second passive RFID tag is already within the reading range of the RFID reading system, it can obtain the radio frequency electromagnetic waves emitted by the RFID reading system through the RFID antenna through the tag antenna, and thus start working.

[0098] In step S204, the RFID reading system acquires and saves the second identification information of the designated second passive RFID tag. The second identification information may be the tag ID of the designated second passive RFID tag.

[0099] The activation component and the component to be activated are described below with two specific embodiments. Those skilled in the art should understand that the two specific embodiments are not intended to limit the scope of protection of the activation component and the component to be activated in this disclosure.

[0100] In the first embodiment, the activation component of the first passive RFID tag is an optical signal transmitting component;

[0101] The component to be activated in the second passive RFID tag is an optical signal receiving component, such as... Figure 5 and Figure 6 As shown.

[0102] At this time, when the optical signal transmitting component of the designated first passive RFID tag approaches the optical signal receiving component of the designated second passive RFID tag, the designated first passive RFID tag activates the designated second passive RFID tag.

[0103] In the second embodiment, the activation component of the first passive RFID tag is a plug component;

[0104] The component to be activated in the second passive RFID tag is an interface component that matches the plug component.

[0105] At this time, when the plug component of the designated first passive RFID tag is inserted into the interface component of the designated second passive RFID tag, the designated first passive RFID tag activates the designated second passive RFID tag.

[0106] In step S205, the RFID reading system acquires the location information of the predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

[0107] The location information is the identification information of the predetermined location, such as the location code, location number, location name, etc. of the predetermined location.

[0108] According to an embodiment of this disclosure, the second passive RFID tag stores location information corresponding to a predetermined location.

[0109] When the location information of the corresponding predetermined location is directly stored in the passive tag, the RFID reading system can directly read this information from the passive tag without having to perform additional queries or calculations through the background database, thereby improving the response speed and efficiency of the entire RFID reading system.

[0110] According to an embodiment of this disclosure, the RFID reading system pre-stores location information of a predetermined location corresponding to the second passive RFID tag.

[0111] Specifically, the location information corresponding to a predetermined location for each second passive RFID tag can be pre-stored through the RFID reading system, enabling centralized management and control within the system. System administrators can easily update, modify, or delete location information through the backend database without individually operating on each passive tag. When the location of an item changes, the location information in the database can be updated in real time, ensuring data accuracy and timeliness.

[0112] This disclosure enables the rapid establishment of a correspondence between two passive tags in a multi-tag deployment environment, ensuring that only one passive tag with a known location is activated at any given time. Since it can obtain the location information of the activated passive tag with a predetermined location, it can quickly and accurately locate the passive tag with an unknown location based on the established correspondence. For example, when the passive tag with an unknown location is applied to an item (e.g., a file), the location of the item can be quickly located without the need to add multiple independent antennas, which greatly reduces hardware costs and complexity.

[0113] Figure 7 A flowchart illustrating another method for rapidly establishing a correspondence between passive RFID tags according to an embodiment of the present disclosure is shown. The method is applied to an RFID reading system, which includes an RFID antenna. Figure 7 As shown, the method includes steps S701-S703:

[0114] In step S701, an RFID antenna sends a radio frequency signal to a designated first passive RFID tag that is close to the designated second passive RFID tag and obtains the corresponding first identification information, and saves the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively set at multiple predetermined positions. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state.

[0115] In step S702, the RFID antenna sends a radio frequency signal to the designated second passive RFID tag activated by the designated first passive RFID tag and obtains the corresponding second identification information, and saves the second identification information.

[0116] In step S703, location information of a predetermined location corresponding to the designated second passive RFID tag is obtained, and a correspondence between the designated first passive RFID tag and the designated second passive RFID tag is established based on the first identification information and the second identification information.

[0117] According to embodiments of this disclosure, the first passive RFID tag includes an activation component, and the second passive RFID tag includes a component to be activated.

[0118] According to embodiments of this disclosure, the activating component is an optical signal transmitting component, and the component to be activated is an optical signal receiving component; or the activating component is a plug component, and the component to be activated is an interface component that matches the plug component.

[0119] Figure 8 A schematic diagram of the structure of an item management system according to an embodiment of the present disclosure is shown.

[0120] like Figure 8 As shown, the system includes: an RFID reading system, a first passive RFID tag group, and a second passive RFID tag group.

[0121] According to an embodiment of this disclosure, the RFID reading system includes an RFID antenna; the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna, and the first passive RFID tag group includes a plurality of first passive RFID tags in a non-working state, the plurality of first passive RFID tags being respectively disposed on a plurality of items; the second passive RFID tag group includes a plurality of second passive RFID tags respectively disposed at a plurality of predetermined positions, the second passive RFID tags being within the coverage area of ​​the RFID antenna and in a non-activated state.

[0122] For example, the items mentioned can be file boxes, data cables, folders, and other items that need to be stored densely.

[0123] According to an embodiment of this disclosure, when a designated first passive RFID tag in a first passive RFID tag group approaches a designated second passive RFID tag in a second passive RFID tag group, the RFID reading system sends a radio frequency signal to the designated first passive RFID tag via the RFID antenna, thereby causing the designated first passive RFID tag to switch from a non-operating state to an operating state. The RFID reading system acquires and saves the first identification information of the designated first passive RFID tag.

[0124] According to embodiments of this disclosure, the designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state. The RFID reading system acquires and saves the second identification information of the designated second passive RFID tag.

[0125] According to embodiments of this disclosure, the RFID reading system acquires location information of a predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information; and manages items equipped with the designated first passive RFID tag based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag.

[0126] According to embodiments of this disclosure, based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag, a correspondence between the item with the designated first passive RFID tag and the location information of the predetermined location corresponding to the designated second passive RFID tag is obtained, so as to use the corresponding location information as the location information of the item with the designated first passive RFID tag.

[0127] According to embodiments of this disclosure, a correspondence is established between a plurality of first passive RFID tags in the first passive RFID tag group and a plurality of second passive RFID tags in the second passive RFID tag group, thereby managing the plurality of items.

[0128] This disclosure enables multi-tag environments, especially densely deployed multi-tag environments, where only one second passive tag is activated at a time. This allows for the rapid establishment of a correspondence between the second passive tag and the first passive tag that activated it. Consequently, the location information of items with the first passive tag can be easily obtained. When users subsequently need to search for and locate items through the item management system, the location of the items can be quickly determined directly through the established correspondence. This enables the management and precise positioning of multiple items in a low-cost manner.

[0129] Figure 9 A schematic diagram of an RFID reading system according to an embodiment of the present disclosure is shown; as follows: Figure 9 As shown, the RFID reading system includes: a reader, an RFID antenna, and a back-end data processing system.

[0130] According to an embodiment of this disclosure, the reader / writer is configured to send a radio frequency signal to a designated first passive RFID tag that is close to a designated second passive RFID tag via the RFID antenna and obtain corresponding first identification information, and save the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively disposed at multiple predetermined locations. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state.

[0131] According to an embodiment of this disclosure, the reader is further configured to send a radio frequency signal to a designated second passive RFID tag activated by the designated first passive RFID tag via the RFID antenna and obtain corresponding second identification information, and save the second identification information.

[0132] According to an embodiment of this disclosure, the backend data processing system is used to save the first identification information and the second identification information, obtain the location information of the predetermined location corresponding to the designated second passive RFID tag, and establish a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

[0133] The backend data processing system can be set up on a local computer, a cloud computing platform, a server cluster, etc.

[0134] Figure 10 A schematic diagram of the structure of a computer system suitable for implementing another method for rapidly establishing correspondence between passive RFID tags according to an embodiment of the present disclosure is shown.

[0135] like Figure 10 As shown, the computer system includes a processing unit that can execute various methods described above based on a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM). The RAM also stores various programs and data required for the operation of the computer system. The processing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0136] The following components are connected to the I / O interface: input sections including keyboards, mice, etc.; output sections including cathode ray tubes (CRTs), liquid crystal displays (LCDs), and speakers; storage sections including hard disks, etc.; and communication sections including network interface cards such as LAN cards and modems. The communication section performs communication processes via a network such as the Internet. Drives are also connected to the I / O interface as needed. Removable media, such as disks, optical disks, magneto-optical disks, semiconductor memories, etc., are installed on the drive as needed so that computer programs read from them can be installed into the storage section as needed. The processing unit can be implemented as a CPU, GPU, TPU, FPGA, NPU, etc.

[0137] In particular, according to embodiments of this disclosure, the methods described above can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing the methods described above. In such embodiments, the computer program can be downloaded and installed from a network via a communication component, and / or installed from a removable medium.

[0138] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0139] The units or modules described in the embodiments of this disclosure can be implemented in software or programmable hardware. The described units or modules can also be located in a processor, and the names of these units or modules do not necessarily constitute a limitation on the unit or module itself.

[0140] In another aspect, this disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or computer system described above; or it may be a standalone computer-readable storage medium not assembled into a device. The computer-readable storage medium stores one or more programs, which are used by one or more processors to perform the methods described in this disclosure.

[0141] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

Claims

1. A method for rapidly establishing a correspondence between passive RFID tags, characterized in that, include: When a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the designated first passive RFID tag is within the coverage area of ​​the RFID antenna of the RFID reading system, thereby causing the designated first passive RFID tag to switch from a non-working state to a working state. The first passive RFID tag group includes multiple first passive RFID tags in a non-working state, and the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The second passive RFID tag group includes multiple second passive RFID tags respectively set at multiple predetermined positions, and the second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state. The RFID reading system acquires the first identification information of the designated first passive RFID tag and saves the first identification information; The designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state; The RFID reading system acquires the second identification information of the designated second passive RFID tag and saves the second identification information; The RFID reading system acquires the location information of the predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

2. The method according to claim 1, characterized in that: The first passive RFID tag includes an activation component; When the designated first passive RFID tag changes from a non-working state to a working state, the activation component of the designated first passive RFID tag is activated.

3. The method according to claim 2, characterized in that: The second passive RFID tag includes a component to be activated; The activation of the designated second passive RFID tag by the designated first passive RFID tag includes: when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag, the designated first passive RFID tag activates the designated second passive RFID tag.

4. The method according to claim 3, characterized in that: The activation component of the first passive RFID tag is an optical signal transmitting component; The component to be activated in the second passive RFID tag is an optical signal receiving component.

5. The method according to claim 4, characterized in that, The step of activating the designated second passive RFID tag when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag includes: activating the designated second passive RFID tag when the optical signal transmitting component of the designated first passive RFID tag approaches the optical signal receiving component of the designated second passive RFID tag.

6. The method according to claim 3, characterized in that: The activation component of the first passive RFID tag is a plug component; The component to be activated in the second passive RFID tag is an interface component that matches the plug component.

7. The method according to claim 6, characterized in that, The step of activating the designated second passive RFID tag when the activation component of the designated first passive RFID tag approaches the activation component of the designated second passive RFID tag includes: activating the designated second passive RFID tag when the plug component of the designated first passive RFID tag is inserted into the interface component of the designated second passive RFID tag.

8. The method according to claim 3, characterized in that, The second passive RFID tag also includes an impedance matching circuit; the tag chip and tag antenna of the second passive RFID tag are connected to the impedance matching circuit and the component to be activated to form a closed circuit of the second passive RFID tag. When the designated second passive RFID tag is in an inactive state, the closed circuit of the designated second passive RFID tag is in an open state or a high-impedance state. When the designated second passive RFID tag is in an active state, the closed circuit of the designated second passive RFID tag is in a conductive state.

9. The method according to claim 1, characterized in that: The second passive RFID tag stores location information for a predetermined location; or The RFID reading system pre-stores location information corresponding to a predetermined location of the second passive RFID tag.

10. A method for rapidly establishing a correspondence between RFID tags, characterized in that, The method is applied to an RFID reading system, the RFID reading system including an RFID antenna, and includes: The RFID antenna sends radio frequency signals to a designated first passive RFID tag that is close to the designated second passive RFID tag and obtains the corresponding first identification information, and saves the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively set at multiple predetermined positions. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state. The RFID antenna sends a radio frequency signal to a designated second passive RFID tag activated by the designated first passive RFID tag and obtains the corresponding second identification information, and saves the second identification information. Obtain the location information of the predetermined location corresponding to the designated second passive RFID tag, and establish the correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information.

11. The method according to claim 10, characterized in that, The first passive RFID tag includes an activation component, and the second passive RFID tag includes a component to be activated.

12. The method according to claim 11, characterized in that: The activation component is an optical signal transmitting component, and the component to be activated is an optical signal receiving component; or The activation component is a plug component, and the component to be activated is an interface component that matches the plug component.

13. An item management system, characterized in that, include: RFID reading system, first passive RFID tag group, second passive RFID tag group; The RFID reading system includes an RFID antenna; the first passive RFID tag group is located outside the coverage area of ​​the RFID antenna, and the first passive RFID tag group includes multiple first passive RFID tags in a non-working state, and the multiple first passive RFID tags are respectively disposed on multiple items; the second passive RFID tag group includes multiple second passive RFID tags respectively disposed at multiple predetermined positions, and the second passive RFID tags are within the coverage area of ​​the RFID antenna and are in an inactive state. When a designated first passive RFID tag in the first passive RFID tag group approaches a designated second passive RFID tag in the second passive RFID tag group, the RFID reading system sends a radio frequency signal to the designated first passive RFID tag through the RFID antenna, thereby causing the designated first passive RFID tag to switch from a non-working state to a working state. The RFID reading system acquires the first identification information of the designated first passive RFID tag and saves the first identification information; The designated first passive RFID tag activates the designated second passive RFID tag, causing the designated second passive RFID tag to change from an inactive state to an active state; The RFID reading system acquires the second identification information of the designated second passive RFID tag and saves the second identification information; The RFID reading system acquires the location information of the predetermined location corresponding to the designated second passive RFID tag, and establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag based on the first identification information and the second identification information; Based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag, the items equipped with the designated first passive RFID tag are managed.

14. The system according to claim 13, characterized in that, The management of items equipped with the designated first passive RFID tag based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag includes: Based on the correspondence between the designated first passive RFID tag and the designated second passive RFID tag, the correspondence between the item with the designated first passive RFID tag and the location information of the predetermined location corresponding to the designated second passive RFID tag is obtained, so as to use the corresponding location information as the location information of the item with the designated first passive RFID tag.

15. The system according to claim 13, characterized in that, The item is any one of the following: File boxes, data cables, folders.

16. The system according to claim 13, characterized in that, The first passive RFID tag includes an activation component, and the second passive RFID tag includes a component to be activated.

17. The system according to claim 16, characterized in that, The activation component is an optical signal transmitting component, and the component to be activated is an optical signal receiving component; or The activation component is a plug component, and the component to be activated is an interface component that matches the plug component.

18. An RFID reading system, characterized in that, include: Readers, RFID antennas, and back-end data processing systems; The reader / writer is used to send radio frequency signals to a designated first passive RFID tag that is close to a designated second passive RFID tag via the RFID antenna and obtain corresponding first identification information, and save the first identification information. The designated first passive RFID tag belongs to a first passive RFID tag group, which includes multiple first passive RFID tags in a non-working state. The first passive RFID tag group is located outside the coverage area of ​​the RFID antenna. The designated second passive RFID tag belongs to a second passive RFID tag group, which includes multiple second passive RFID tags respectively set at multiple predetermined positions. The second passive RFID tag group is within the coverage area of ​​the RFID antenna and is in an inactive state. The reader is also used to send radio frequency signals to a designated second passive RFID tag activated by the designated first passive RFID tag through the RFID antenna and obtain the corresponding second identification information, and save the second identification information; The backend data processing system is used to save the first identification information and the second identification information, and to obtain the location information of the predetermined location corresponding to the designated second passive RFID tag. Based on the first identification information and the second identification information, the system establishes a correspondence between the designated first passive RFID tag and the designated second passive RFID tag.

19. A computer-readable storage medium storing computer instructions thereon, characterized in that, When executed by a processor, the computer instructions implement the method described in any one of claims 10 to 12.

20. A computer program product comprising computer instructions that, when executed by a processor, implement the method of any one of claims 10 to 12.

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