Radio frequency identification tag, optical fiber, radio frequency identification device and system, and radio frequency identification tag pairing method

Abstract

The present application provides a radio frequency identification tag, an optical fiber, a radio frequency identification device and system, and a radio frequency identification tag pairing method. The radio frequency identification tag pairing method comprises: a main control tag sending a detection signal to a controlled tag, wherein a connection state with the controlled tag can be determined by means of the returned detection signal; and when the main control tag and the controlled tag are connected, performing a pairing process. The radio frequency identification tag pairing method can improve the pairing efficiency of radio frequency identification tags.

Description

A method for pairing RFID tags, optical fibers, RFID devices, systems, and RFID tags.

[0001] This application claims priority to Chinese Patent Application No. 202411197658.6, filed on August 28, 2024, entitled "RFID device, system and pairing method for RFID tag", and Chinese Patent Application No. 202422102246.1, filed on August 28, 2024, entitled "An RFID tag and optical fiber", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of radio frequency identification (RFID) technology, and in particular to an RFID tag, optical fiber, RFID device, RFID system, RFID tag pairing method, and computer program product. Background Technology

[0003] Optical fiber is a passive transmission medium, and it is difficult for optical fiber communication equipment network elements to effectively monitor and manage optical fiber resources, leading to challenges for operators such as massive amounts of optical fiber routes being invisible, resources being unknown, and faults being difficult to locate.

[0004] Currently, these connections are managed manually, such as through fiber optic connection ports and paper labels on each row of ports in the optical distribution box, which are manually identified, compared, and registered into forms or software. This method is not only inefficient but also prone to errors and omissions, resulting in the loss of a large number of connections, leading to problems such as low commissioning efficiency, wasted port resources, and difficulty in locating faults. The manual method is no longer sustainable.

[0005] Therefore, operators have a strong demand for the digital transformation of the above-mentioned scenarios. For each fiber connection, that is, the connection port of the fiber connects to the port in the optical distribution box, two RFID tags are used to manage this connection.

[0006] However, if one port in the optical distribution box is an empty port (no fiber optic cable connected), only the port's RFID tag is present, not the RFID tag for the fiber optic connection port. Currently, when scanning these RFID tags with a reader, if the RFID tag for the fiber optic connection port is not identified, it cannot be determined whether this is due to the port being empty, or due to various factors (e.g., reader misalignment, distance, external interference, etc.). To avoid omissions, multiple scans are required to eliminate environmental factors, significantly increasing the pairing time between the two RFID tags and reducing efficiency. Summary of the Invention

[0007] This application provides an RFID tag, an optical fiber, an RFID device, a system, and a pairing method for the RFID tag. The pairing method includes a master tag sending a detection signal to a controlled tag, and determining the connection status with the controlled tag based on the returned detection signal. The pairing process is performed when the master tag and the controlled tag are connected.

[0008] In a first aspect, a pairing method for radio frequency identification (RFID) tags is provided, applied to an RFID system, the system including a reader, a master tag, and a controlled tag, comprising: the reader sending a first signal to the master tag, the first signal being used to instruct the master tag to send a detection signal to the controlled tag; the reader receiving a second signal, the second signal being used to indicate the connection status between the master tag and the controlled tag; and when the master tag and the controlled tag are connected, the reader sending pairing information to the master tag, the pairing information being used to instruct the master tag and the controlled tag to pair.

[0009] According to an embodiment of this application, the reader instructs the master tag to send a detection signal to the controlled tag via a first signal. The reader can instruct a pairing process between the master tag and the controlled tag when they are connected. This RFID tag pairing method avoids entering the pairing process when the master tag and the controlled tag are not connected, thereby improving the efficiency of RFID tag pairing.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, before the reader sends the first signal to the master control tag, the method further includes: the reader broadcasting an activation signal, the activation signal being used to activate the master control tag and the controlled tag, the activation signal also being used to instruct the master control tag to send its identifier to the reader.

[0011] According to an embodiment of this application, before radio frequency identification (RFID) is performed, the master tag and the controlled tag can be in a dormant (silent) state to save energy. When the reader is started, the master tag and the controlled tag are activated after receiving an activation signal.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the reader receiving the second signal includes: the reader sending a third signal to the master control tag, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; and the reader receiving the second signal from the master control tag.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the reader receiving the second signal includes: the reader sending a fourth signal to the controlled tag, the fourth signal being used to instruct the controlled tag to send the connection status between the master tag and the controlled tag to the reader; and the reader receiving the second signal from the controlled tag.

[0014] According to the embodiments of this application, the second signal can be sent by the master tag or by the controlled tag. The embodiments of this application do not limit this and can be adjusted according to actual production or design.

[0015] It should be understood that the optical distribution box includes multiple ports, each equipped with a radio frequency identification (RFID) tag (master tag). Some of these ports are connected to optical fibers, while others are empty (not connected to optical fibers). That is, some master tags are connected to controlled tags, while others are not. Therefore, when a second signal is sent by a master tag, the reader can receive the second signal sent by each master tag.

[0016] When the second signal is sent by the controlled tag, various factors (such as the reader not aligning with the tag, distance, external interference, etc.) may cause the reader to fail to receive the second signal. This makes it impossible to determine whether the failure to receive the second signal is due to external factors or because the port is empty and no corresponding controlled tag is configured. Therefore, the reader needs to send a fourth signal multiple times to rule out the possibility that the failure to receive the second signal is due to external factors, which reduces efficiency.

[0017] Secondly, a pairing method for radio frequency identification (RFID) tags is provided, applied to an RFID system, the system including a reader, a master tag, and a controlled tag, comprising: the master tag receiving a first signal from the reader, the first signal being used to instruct the master tag to send a detection signal to the controlled tag; the master tag sending the detection signal to the controlled tag, and determining a connection state between the master tag and the controlled tag based on the detection signal; and the master tag sending a second signal to the reader, the second signal being used to indicate the connection state between the master tag and the controlled tag.

[0018] In conjunction with the second aspect, in some implementations of the second aspect, the master control tag receives an activation signal from the reader, the activation signal being used to activate the master control tag, and the activation signal also being used to instruct the master control tag to send its identifier to the reader.

[0019] In conjunction with the second aspect, in some implementations of the second aspect, the master control tag sending a second signal to the reader includes: the master control tag receiving a third signal from the reader, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; and the master control tag sending the second signal to the reader.

[0020] In conjunction with the second aspect, in some implementations of the second aspect, the master control tag receives pairing information from the reader, the pairing information being used to instruct the master control tag to pair with the controlled tag.

[0021] Thirdly, a pairing method for radio frequency identification (RFID) tags is provided, applied to an RFID system, the system including a reader, a master tag, and a controlled tag, comprising: the reader sending a first signal to the master tag, the first signal being used to instruct the master tag to send a detection signal to the controlled tag; the master tag receiving the first signal from the reader and sending the detection signal to the controlled tag; the master tag determining a connection state between the master tag and the controlled tag based on the detection signal; the master tag sending a second signal to the reader, the second signal being used to indicate the connection state between the master tag and the controlled tag; and when the master tag and the controlled tag are connected, the reader sending pairing information to the master tag, the pairing information being used to instruct the master tag and the controlled tag to pair.

[0022] In conjunction with the third aspect, in some implementations of the third aspect, the master control tag or the controlled tag sending a second signal to the reader includes: the reader sending a third signal to the master control tag, the third signal being used to indicate that the master control tag sends a connection status between the master control tag and the controlled tag to the reader; the master control tag receiving the third signal from the reader and sending the second signal to the reader.

[0023] Fourthly, a radio frequency identification (RFID) system is provided, the system comprising a reader, a master tag, and a controlled tag; wherein the reader is configured to send a first signal to the master tag, the first signal instructing the master tag to send a detection signal to the controlled tag; the master tag is configured to receive the first signal from the reader and to send the detection signal to the controlled tag; the master tag is further configured to determine a connection state between the master tag and the controlled tag based on the detection signal; the master tag is further configured to send a second signal to the reader, the second signal indicating the connection state between the master tag and the controlled tag; when the master tag and the controlled tag are connected, the reader is further configured to send pairing information to the master tag, the pairing information instructing the master tag and the controlled tag to pair.

[0024] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the reader is further configured to send a third signal to the master control tag, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; the master control tag is further configured to receive the third signal from the reader and send the second signal to the reader.

[0025] Fifthly, a radio frequency identification (RFID) device is provided, including a processor, the processor being configured to, by executing a computer program or instructions, or by using logic circuitry, cause the RFID device to perform the method described in any one of the first aspects; or cause the RFID device to perform the method described in any one of the second aspects.

[0026] In a sixth aspect, a computer-readable storage medium is provided, characterized in that a computer program or instructions are stored on the computer-readable storage medium, which, when executed on a device or a computer, causes the device to perform the method described in any one of the first aspects, or causes the device to perform the method described in any one of the second aspects.

[0027] In a seventh aspect, a computer program product is provided, characterized in that the computer program product includes a computer program or instructions for performing the method described in any one of the first aspects, or a computer program or instructions for performing the method described in any one of the second aspects.

[0028] Eighthly, a pairing method for radio frequency identification (RFID) tags is provided, characterized in that it is applied to an RFID system, the system comprising a reader, a master tag, and a controlled tag, comprising: the controlled tag receiving a detection signal from the master tag and determining a connection state between the master tag and the controlled tag based on the detection signal; the controlled tag sending a second signal to the reader, the second signal being used to indicate the connection state between the master tag and the controlled tag.

[0029] In conjunction with the eighth aspect, in some implementations of the eighth aspect, before the controlled tag receives the detection signal, the method further includes: the controlled tag receiving an activation signal from the reader, the activation signal being used to activate the controlled tag.

[0030] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the controlled tag sending a second signal to the reader includes: the controlled tag receiving a third signal, the third signal being used to instruct the controlled tag to send the connection status between the master tag and the controlled tag to the reader; and the controlled tag sending the second signal to the reader.

[0031] A ninth aspect provides a radio frequency identification tag, comprising: a connector; a radio frequency chip, wherein a first port of the radio frequency chip is coupled to a first connection port of the connector, and a second port of the radio frequency chip is coupled to a second connection port of the connector; and an element, wherein a first end of the element is coupled to the first port and the first connection port, and a second end of the element is coupled to the second port and the second connection port.

[0032] According to an embodiment of this application, an RFID tag (e.g., as a controlled tag) is connected to another RFID tag (e.g., as a master tag) via a connector.

[0033] Another RFID tag (e.g., as a master tag) outputs a detection signal (e.g., a high-level electrical signal). Because the element is coupled between the two connection ports of the connector, it can form a current path, allowing the detection signal to flow through the element and return to the other RFID tag (e.g., as a master tag). The other RFID tag (e.g., as a master tag) can determine the connection status between itself and the RFID tag (e.g., as a controlled tag) based on the detection signal.

[0034] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the element is a resistor, or the element is a circuit that can be equivalent to a resistor.

[0035] According to the embodiments of this application, in actual production or design, the type of component can be determined based on the detection signal (e.g., current or voltage). For example, the component can also be a capacitor, an equivalent capacitor, an inductor, or an equivalent inductor. The embodiments of this application do not limit this and can be adjusted according to actual production or design.

[0036] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the equivalent resistance of the element is less than or equal to 2MΩ.

[0037] According to the embodiments of this application, when the equivalent resistance value of the component is within the above range, the detection signal output by the second RFID tag 300 flows through the component and returns to the second RFID tag with a strong intensity (current or voltage intensity), which facilitates the second RFID tag to identify the signal and improves the accuracy of identification.

[0038] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the first port is a power supply port and the second port is an antenna negative port.

[0039] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the first port is a voltage output port and the second port is a ground port.

[0040] According to the embodiments of this application, the components and the radio frequency chip can also have a variety of different connection methods, which can be adjusted according to actual production or design.

[0041] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the radio frequency identification tag further includes an antenna, a third port of the radio frequency chip is coupled to the positive port of the antenna, and a fourth port of the radio frequency chip is coupled to the negative port of the antenna.

[0042] According to an embodiment of this application, the first radio frequency identification tag can communicate with an external device via an antenna. For example, it can send signals to a reader via the antenna, or receive signals sent by a reader via the antenna.

[0043] In conjunction with the ninth aspect, in some implementations of the ninth aspect, the radio frequency identification tag further includes a substrate, on which the connector, the radio frequency chip, and the element are located.

[0044] According to an embodiment of this application, the substrate is used to carry the components included in the first radio frequency identification tag.

[0045] In a tenth aspect, an optical fiber is provided, comprising a radio frequency identification tag and an optical fiber connection port as described in any one of the ninth aspects above, wherein the radio frequency identification tag is fixedly connected to the optical fiber connection port. Attached Figure Description

[0046] Figure 1 is a schematic diagram of a scenario in which ports and optical fibers are paired in an optical distribution box 100 according to an embodiment of this application.

[0047] Figure 2 is a schematic diagram of a scenario in which a port in an optical distribution box 100 performs radio frequency identification with an optical fiber according to an embodiment of this application.

[0048] Figure 3 is a schematic diagram of a first radio frequency identification tag 200 provided in an embodiment of this application.

[0049] Figure 4 is a schematic diagram of the connection between the first RFID tag 200 and the second RFID tag 300 provided in the embodiments of this application.

[0050] Figure 5 is a schematic diagram of a first radio frequency identification tag 200 provided in an embodiment of this application.

[0051] Figure 6 is a schematic diagram of a first radio frequency identification tag 200 provided in an embodiment of this application.

[0052] Figure 7 is a schematic diagram of a pairing method 400 for radio frequency identification tags provided in an embodiment of this application.

[0053] Figure 8 is a schematic diagram of a pairing method 500 for radio frequency identification tags provided in an embodiment of this application.

[0054] Figure 9 is a schematic diagram of a pairing method 600 for radio frequency identification tags provided in an embodiment of this application.

[0055] Figure 10 is a schematic block diagram of a radio frequency identification device (RFID apparatus) according to an embodiment of this application.

[0056] Figure 11 is a schematic block diagram of another radio frequency identification device (RFID apparatus) according to an embodiment of this application. Detailed Implementation

[0057] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0058] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0059] The phrase "within the range" used in this application, unless otherwise specified, includes both endpoints of the range by default. For example, in the range of 1 to 5, it includes the values ​​1 and 5.

[0060] Coupling can be understood as direct coupling and / or indirect coupling. "Coupled connection" can be understood as a direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection," which is understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit signals, such as copper foil or wires on a printed circuit board (PCB). "Indirect coupling" can be understood as two conductors conducting electricity through a gap / non-contact method. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gaps between two conductive components.

[0061] Components / devices: including at least one of lumped components / devices and distributed components / devices.

[0062] Lumped components / devices: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For signals, the characteristics of these components remain constant regardless of frequency. Lumped components / devices can include lumped capacitors, lumped inductors, etc.

[0063] Distributed elements / devices: Unlike lumped elements, when a signal passes through an element, the characteristics of each point within the element will vary depending on the signal. Therefore, the element as a whole cannot be considered a single entity with fixed characteristics, and should be called a distributed element. Distributed elements / devices can include distributed capacitance, distributed inductance, etc.

[0064] Capacitance: can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance includes capacitive components, such as capacitor elements; distributed capacitance (or distributed capacitance) includes the equivalent capacitance formed by two conductive components separated by a certain gap.

[0065] Inductance: can be understood as lumped inductance and / or distributed inductance. Lumped inductance includes inductive components, such as inductive elements; distributed inductance (or distributed inductance) includes the equivalent inductance formed through a conductive element of a certain length, such as the equivalent inductance formed by a conductor due to bending or rotation.

[0066] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test mount and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a tuning circuit and / or electronic components, which may be electronic components for switching the coupling connection of the radiator. The matching circuit has impedance matching and / or frequency tuning functions. It is typically considered part of the antenna.

[0067] Radio frequency identification (RFID) technology is a type of automatic identification technology that uses wireless radio frequency for non-contact two-way data communication. It reads and writes RFID tags using wireless radio frequency to achieve the purpose of identifying targets and exchanging data.

[0068] RFID tags, also known as tags, electronic tags, smart tags, RFID transponders, or RFID data carriers, typically consist of a coupling element and a chip. Each RFID tag has a unique identifier, such as an electronic code. In some scenarios, RFID tags can be attached to objects to identify them.

[0069] Reader: Also known as a reading device, scanner, reader, communicator, or reader-writer (depending on whether the RFID tag can be wirelessly rewritten). It is typically used to read (and sometimes write) information from RFID tags. For example, a reader can be a handheld or fixed device.

[0070] Figure 1 is a schematic diagram of a scenario in which ports and optical fibers are paired in an optical distribution box 100 according to an embodiment of this application.

[0071] It should be understood that the optical distribution box 100 can be understood as a tool used to implement fiber optic patching.

[0072] As shown in Figure 1, the optical distribution box 100 may include multiple ports. For example, the optical distribution box 100 includes ports 101 to 106. At least some of the multiple ports can be connected to a single optical fiber. For example, optical fibers 111 to 116.

[0073] Currently, the vast and complex connections between optical fibers and optical distribution boxes (100 ports) are typically managed manually. This involves attaching paper labels to each fiber optic port and each port within the distribution box, then manually identifying, comparing, and registering the corresponding connections between ports and fibers in tables or software. Since optical fiber is a passive transmission medium, the connections between optical fibers and optical switching equipment ports are difficult to monitor and manage through information networks – making them a "dumb" resource in the optical cable network.

[0074] One possible approach is to install RFID tags on the ports of the optical distribution box 100 and the connection ports of the optical fibers, as shown in Figure 2. In one implementation, when a port is connected to an optical fiber, at least a portion of the connection port of the optical fiber is located within the port. RFID tags 201-203 are fixedly connected to their respective ports 101-103. RFID tags 211-213 are fixedly connected to their respective connection ports of optical fibers 111-113.

[0075] It should be understood that the RFID tags fixedly connected to the port of the optical distribution box 100 in this embodiment can be referred to as "master tags", such as RFID tags 201-203. The RFID tags fixedly connected to the connection port of the optical fiber in this embodiment can be referred to as "controlled tags", such as RFID tags 211-213.

[0076] When RFID tags are used, the RFID tags on the ports of the optical distribution box 100 and the RFID tags on the fiber optic connection ports are kept close together. The reader 210 is then placed close to the port and simultaneously reads and identifies this set of RFID tags. At this time, the reader 210 is in close-range reading mode, ensuring that only the closest pair of RFID tags is identified, while other surrounding tags are not read. This allows the reader to read the information of this set of RFID tags fixed to the ports of the optical distribution box 100 and the fiber optic connection ports. Identifying each pair of RFID tags allows for the recording and management of the correspondence between ports and optical fibers within the optical distribution box.

[0077] If one port in the optical distribution box is an empty port (no fiber optic cable connected), only the port's RFID tag is present, not the RFID tag for the fiber optic connection port. Currently, when scanning these RFID tags with a reader, if the RFID tag for the fiber optic connection port is not identified, it cannot be determined whether this is due to the port being empty, or due to various factors (e.g., reader misalignment, distance, external interference, etc.). To avoid omissions, multiple scans are required to eliminate environmental factors, significantly increasing the pairing time between the two RFID tags and reducing efficiency.

[0078] This application provides a radio frequency identification (RFID) device, system, and pairing method for RFID tags. The pairing method includes a master tag sending a detection signal to a controlled tag, and determining the connection status with the controlled tag based on the returned detection signal. When the master tag and the controlled tag are connected, a pairing process is performed. This pairing direction can improve the efficiency of RFID tag pairing.

[0079] Figure 3 is a schematic diagram of a first radio frequency identification tag 200 provided in an embodiment of this application.

[0080] It should be understood that the first RFID tag 200 shown in Figure 3 can be fixed to the connection port of the optical fiber. The first RFID tag 200 can serve as the controlled tag in the above embodiments.

[0081] As shown in Figure 3, the first radio frequency identification tag 200 includes a first connector 210, a first radio frequency chip (RF IC) 220, and a component 230.

[0082] The first port 221 of the first RF chip 220 is coupled to the first connection port 211 of the first connector 210. The second port 222 of the first RF chip 220 is coupled to the second connection port 212 of the first connector 210.

[0083] In one embodiment, the first connector 210 is used for connection to an external circuit. In another embodiment, the first connector 210 can be connected to the connectors of other RFID tags (e.g., through a plug-in, snap-on, etc.).

[0084] Component 230 is coupled between a first port 221 and a second port 222 of the first RF chip 220. In one embodiment, component 230 is coupled between a first connection port 211 and a second connection port 212 of the first connector 210.

[0085] According to an embodiment of this application, a first radio frequency identification tag 200 (e.g., the first radio frequency identification tag 200 is used as a controlled tag) is connected to a second radio frequency identification tag 300 (e.g., the second radio frequency identification tag 300 is used as a master tag) via a first connector 210, as shown in FIG4.

[0086] The second RFID tag 300 outputs a detection signal (e.g., a high-level electrical signal). Since component 230 is coupled between the two connection ports of the first connector 210, component 230 can form a current path, allowing the detection signal to flow through component 230 and return to the second RFID tag 300, as shown in Figure 4. The second RFID tag 300 can determine the connection status between the second RFID tag 300 and the first RFID tag 200 based on the detection signal.

[0087] It should be understood that, in the embodiments of this application, the connection state can be understood as the electrical connection relationship between two RFID tags. For example, if the first RFID tag 200 and the second RFID tag 300 are connected by a connector, and signals can be transmitted between the first RFID tag 200 and the second RFID tag 300 through internal circuitry, then the connection state between the first RFID tag 200 and the second RFID tag 300 can be considered as a conductive state. When the first RFID tag 200 and the second RFID tag 300 cannot transmit signals through internal circuitry, then the connection state between the first RFID tag 200 and the second RFID tag 300 can be considered as a non-conductive state.

[0088] In one embodiment, when the second RFID tag 300 detects a returned detection signal (e.g., current or voltage), the second RFID tag 300 determines that the second RFID tag 300 is connected to the first RFID tag 200. In one embodiment, when the second RFID tag 300 does not detect a returned detection signal (e.g., current or voltage), the second RFID tag 300 determines that the second RFID tag 300 is not connected to the first RFID tag 200.

[0089] In one embodiment, element 230 can be a distributed element or a lumped element. In another embodiment, element 230 can also be a circuit.

[0090] It should be understood that component 230 can be a single device or a circuit comprising multiple devices, as shown in Figure 5. In one embodiment, component 230 can also be reused to implement other functions of the first RFID tag 200, and this application embodiment does not limit this.

[0091] In one embodiment, element 230 may be a resistor, or may be equivalent to a circuit with a resistor.

[0092] It should be understood that in actual production or design, the type of component 230 can be determined based on the detection signal (e.g., current or voltage). For example, component 230 can also be a capacitor, an equivalent capacitor, an inductor, or an equivalent inductor. The embodiments of this application do not limit this and can be adjusted according to actual production or design.

[0093] In one embodiment, the equivalent resistance of element 230 (which can be understood as a resistance value when element 230 is a lumped element) is less than or equal to 2MΩ.

[0094] It should be understood that when the equivalent resistance value of component 230 is within the above range, the detection signal output by the second RFID tag 300, after flowing through component 230, returns to the second RFID tag 300 with a strong intensity (current or voltage intensity), which facilitates the second RFID tag 300 in recognizing the signal and improves the accuracy of recognition.

[0095] In one embodiment, the first RFID tag 200 further includes a first antenna 240. A third port 223 of the first RF chip 220 is coupled to the positive port of the first antenna 240, and a fourth port 224 of the first RF chip 220 is coupled to the negative port of the first antenna 240.

[0096] It should be understood that the first radio frequency identification tag 200 can communicate with external devices through the first antenna 240. For example, it can send signals to a reader through the first antenna 240, or receive signals sent by a reader through the first antenna 240.

[0097] In one embodiment, the first RFID tag 200 further includes a first substrate 250. In one embodiment, a first connector 210, a first RF chip 220, and a component 230 are located on the first substrate 250. In one embodiment, a first antenna 240 is located on the first substrate 250.

[0098] It should be understood that the first substrate 250 is used to carry the components included in the first radio frequency identification tag 200.

[0099] In one embodiment, the first port 221 of the first RF chip 220 is a voltage output (Vout) port. In another embodiment, the second port 222 of the first RF chip 220 is a ground (GND) port, as shown in Figure 3.

[0100] In one embodiment, the third port 224 of the first RF chip 220 is the radio frequency positive (RFP) port. In another embodiment, the fourth port 224 of the first RF chip 220 is the radio frequency negative (RFN) port.

[0101] It should be understood that Figure 3 illustrates one connection method between component 230 and the first antenna 240 and the first radio frequency chip 220, respectively. In actual production or design, component 230 and the first radio frequency chip 220 can have various different connection methods. In one embodiment, the first port 221 of the first radio frequency chip 220 is a power supply (voltage drain, VDD) port. In another embodiment, the second port 222 of the first radio frequency chip 220 is an antenna negative (radio frequency negative, RFN) port, as shown in Figure 6. The second port 222 and the fourth port 224 are the same. The embodiments of this application do not limit the connection method between component 230 and the first radio frequency chip 220, and can be adjusted according to actual production or design.

[0102] In one embodiment, the second RFID tag 300 may include a second connector 310 and a second RFID chip 320, as shown in FIG4. A first port 321 of the second RFID chip 320 is coupled to a first connection port of the second connector 310. A second port 322 of the second RFID chip 320 is coupled to a second connection port of the second connector 310.

[0103] In one embodiment, the second RFID tag 300 may include a second antenna 340. A third port 323 of the second RF chip 320 is coupled to the positive port of the second antenna 340, and a fourth port 324 of the second RF chip 320 is coupled to the negative port of the second antenna 340.

[0104] In one embodiment, the second connector 310 and the second radio frequency chip 320 may be located on the second substrate.

[0105] It should be understood that the second RFID tag 300 and the first RFID tag 200 can have similar structures. The only difference between the second RFID tag 300 and the first RFID tag 200 is component 230. The first RFID tag 200 can serve as the controlled tag in the above embodiments. The second RFID tag 300 can serve as the master control tag in the above embodiments.

[0106] In one embodiment, the first port of the second RF chip 320 is a voltage output (Vout) port. In another embodiment, the second port of the second RF chip 320 is a ground (GND) port.

[0107] In one embodiment, a first port of the second RF chip 320 is used to couple with a first port 221 of the first RF chip 220. In another embodiment, a second port of the second RF chip 320 is used to couple with a second port 222 of the first RF chip 220.

[0108] It should be understood that the second RFID tag 300 can be used to output a detection signal. Since the first port 221 and the second port 222 of the first RFID chip 220 are coupled to the component 230, the detection signal can return to the second RFID tag 300 after flowing through the component 230.

[0109] Figure 7 is a schematic diagram of a pairing method 400 for radio frequency identification tags provided in an embodiment of this application.

[0110] It should be understood that the method 400 shown in Figure 7 can be applied to a radio frequency identification (RFID) system. The RFID system includes a reader, a master tag, and a controlled tag. The controlled tag can be the first RFID tag 200 in the above embodiments. The master tag can be the second RFID tag 300 in the above embodiments.

[0111] As shown in Figure 7, method 400 includes:

[0112] S410, the reader sends a first signal to the master tag. This first signal instructs the master tag to send a detection signal to the controlled tag.

[0113] It should be understood that the detection signal can be a high-level electrical signal output by the master tag (e.g., the RF chip in the master tag). The master tag can determine the connection status between the master tag and the controlled tag based on the detection signal.

[0114] In one embodiment, prior to S410, method 400 may further include: S440, whereby the reader broadcasts an activation signal to activate the master tag and the controlled tag.

[0115] It should be understood that before RFID is performed, the master tag and the controlled tag can be in a dormant (silent) state to save energy. When the reader is started, the master tag and the controlled tag are activated after receiving an activation signal.

[0116] In one embodiment, the activation signal may include a first select instruction, which may be used to filter out controllable tags and to instruct the master tag to report the identifier corresponding to the master tag.

[0117] The identifier can be understood as a code used to identify an RFID tag. Each master tag or controlled tag has a unique identifier. For example, the identifier can be a unique string of numbers, with one identifier corresponding to one unique RFID tag.

[0118] In one embodiment, the reader retrieves a list of identifiers for all master control tags within the optical distribution box based on the reported identifiers. In another embodiment, the reader can select a master control tag from the list of master control tag identifiers and send a first signal to it.

[0119] S420, the reader receives a second signal. This second signal indicates the connection status between the master tag and the controlled tag.

[0120] In one embodiment, the second signal can be sent by the master tag.

[0121] In one embodiment, prior to S420, method 400 may further include the reader sending a third signal to the master tag. The third signal is used to instruct the master tag to send the connection status between the master tag and the controlled tag to the reader. The reader receives the second signal sent by the master tag.

[0122] In one embodiment, the second signal may be sent by the controlled tag.

[0123] In one embodiment, prior to S420, method 400 may further include the reader sending a fourth signal to the controlled tag. The fourth signal is used to instruct the controlled tag to send the connection status between the master tag and the controlled tag to the reader. The reader receives a second signal sent by the controlled tag.

[0124] It should be understood that the second signal can be sent by the master tag or the controlled tag. This application embodiment does not limit this and can be adjusted according to actual production or design.

[0125] It should be understood that the optical distribution box includes multiple ports, each equipped with a radio frequency identification (RFID) tag (master tag). Some of these ports are connected to optical fibers, while others are empty (not connected to optical fibers). That is, some master tags are connected to controlled tags, while others are not. Therefore, when a second signal is sent by a master tag, the reader can receive the second signal sent by each master tag.

[0126] When the second signal is sent by the controlled tag, various factors (such as the reader not aligning with the tag, distance, external interference, etc.) may cause the reader to fail to receive the second signal. This makes it impossible to determine whether the failure to receive the second signal is due to external factors or because the port is empty and no corresponding controlled tag is configured. Therefore, the reader needs to send a fourth signal multiple times to rule out the possibility that the failure to receive the second signal is due to external factors, which reduces efficiency.

[0127] S430, when connected to the controlled tag, the reader sends pairing information to the master tag. This pairing information instructs the master tag to pair with the controlled tag.

[0128] It should be understood that the reader instructs the master tag to send a detection signal to the controlled tag via a first signal. The reader can instruct the master tag and controlled tag to proceed with a pairing process when they are connected. The RFID tag pairing method 400 avoids entering the pairing process when the master tag and controlled tag are not connected, thereby improving the efficiency of RFID tag pairing.

[0129] In one embodiment, the second signal is used to indicate that the master tag and the controlled tag are connected. When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag.

[0130] In one embodiment, the second signal is used to indicate that the master tag and the controlled tag are not connected. When the master tag and the controlled tag are not connected, the reader does not send pairing information to the master tag.

[0131] It should be understood that when the reader determines that the master tag and the controlled tag are connected, it instructs the master tag and the controlled tag to enter the pairing process. For the sake of brevity, the pairing process will not be described in detail.

[0132] Figure 8 is a schematic diagram of a pairing method 500 for radio frequency identification tags provided in an embodiment of this application.

[0133] It should be understood that the method 500 shown in Figure 8 can be applied to a radio frequency identification (RFID) system. The RFID system includes a reader, a master tag, and a controlled tag. The controlled tag can be the first RFID tag 200 in the above embodiments. The master tag can be the second RFID tag 300 in the above embodiments.

[0134] S510, the reader sends a first signal to the master tag. This first signal instructs the master tag to send a detection signal to the controlled tag.

[0135] It should be understood that the detection signal can be a high-level electrical signal output by the master tag (e.g., the RF chip in the master tag). The master tag can determine the connection status between the master tag and the controlled tag based on the detection signal.

[0136] In one embodiment, prior to S510, method 500 may further include: S560, whereby the reader broadcasts an activation signal to activate the master tag and the controlled tag.

[0137] It should be understood that before RFID is performed, the master tag and the controlled tag can be in a dormant (silent) state to save energy. When the reader is started, the master tag and the controlled tag are activated after receiving an activation signal.

[0138] In one embodiment, the activation signal may include a first select instruction, which may be used to filter out controllable tags and to instruct the master tag to report the identifier corresponding to the master tag.

[0139] The identifier can be understood as a code used to identify an RFID tag. Each master tag or controlled tag has a unique identifier. For example, the identifier can be a unique string of numbers, with one identifier corresponding to one unique RFID tag.

[0140] In one embodiment, the reader retrieves a list of identifiers for all master control tags within the optical distribution box based on the reported identifiers. In another embodiment, the reader can select a master control tag from the list of master control tag identifiers and send a first signal to it.

[0141] S520, the master tag receives the first signal from the reader and sends a detection signal to the controlled tag.

[0142] In one embodiment, the master tag receives the first signal from the reader, and the aforementioned detection signal is output between the first port and the second port of the radio frequency chip in the master tag.

[0143] S530, the master control tag determines the connection status between the master control tag and the controlled tag based on the detection signal.

[0144] It should be understood that, in one embodiment, when the master tag detects a returned detection signal (e.g., current or voltage), the master tag determines that it is connected to the controlled tag. In one embodiment, when the master tag does not detect a returned detection signal (e.g., current or voltage), the master tag determines that it is not connected to the controlled tag.

[0145] In one embodiment, the master tag can update a status bit based on a detection signal. This status bit can be used to indicate the connection status between the master tag and the controlled tag.

[0146] S540, the master tag sends a second signal to the reader, which is used to indicate the connection status between the master tag and the controlled tag.

[0147] In one embodiment, the second signal may include the status bit of the updated master tag.

[0148] In one embodiment, prior to S540, method 500 may further include: S570, whereby the reader sends a third signal to the master tag.

[0149] The third signal is used to instruct the master tag to send the connection status between the master tag and the controlled tag to the reader. After receiving the third signal from the reader, the master tag sends the aforementioned second signal to the reader.

[0150] In one embodiment, the third signal may include a query command. Upon receiving the query command from the reader, the master tag sends its identifier to the reader.

[0151] In one embodiment, the third signal may include a read instruction. After receiving the read instruction from the reader, the master tag sends the connection status (second signal) between the master tag and the controlled tag to the reader.

[0152] S550: When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag. This pairing information instructs the master tag and the controlled tag to pair.

[0153] In one embodiment, the second signal is used to indicate that the master tag and the controlled tag are connected. When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag.

[0154] In one embodiment, the second signal is used to indicate that the master tag and the controlled tag are not connected. When the master tag and the controlled tag are not connected, the reader does not send pairing information to the master tag.

[0155] It should be understood that when the reader determines that the master tag and the controlled tag are connected, it instructs the master tag and the controlled tag to enter the pairing process. For the sake of brevity, the pairing process will not be described in detail.

[0156] Figure 9 is a schematic diagram of a pairing method 600 for radio frequency identification tags provided in an embodiment of this application.

[0157] It should be understood that the method 600 shown in Figure 9 can be applied to a radio frequency identification (RFID) system. The RFID system includes a reader, a master tag, and a controlled tag. The controlled tag can be the first RFID tag 200 in the above embodiments. The master tag can be the second RFID tag 300 in the above embodiments.

[0158] S610, the reader sends a first signal to the master tag. This first signal instructs the master tag to send a detection signal to the controlled tag.

[0159] It should be understood that the detection signal can be a high-level electrical signal output by the master tag (e.g., the RF chip in the master tag). The master tag can determine the connection status between the master tag and the controlled tag based on the detection signal.

[0160] In one embodiment, prior to S610, method 600 may further include: S660, whereby the reader broadcasts an activation signal to activate the master tag and the controlled tag.

[0161] It should be understood that before RFID is performed, the master tag and the controlled tag can be in a dormant (silent) state to save energy. When the reader is started, the master tag and the controlled tag are activated after receiving an activation signal.

[0162] In one embodiment, the activation signal may include a first select instruction, which may be used to filter out controllable tags and to instruct the master tag to report the identifier corresponding to the master tag.

[0163] The identifier can be understood as a code used to identify an RFID tag. Each master tag or controlled tag has a unique identifier. For example, the identifier can be a unique string of numbers, with one identifier corresponding to one unique RFID tag.

[0164] In one embodiment, the reader retrieves a list of identifiers for all master control tags within the optical distribution box based on the reported identifiers. In another embodiment, the reader can select a master control tag from the list of master control tag identifiers and send a first signal to it.

[0165] S620, the master tag receives the first signal from the reader and sends a detection signal to the controlled tag.

[0166] In one embodiment, the master tag receives the first signal from the reader, and the aforementioned detection signal is output between the first port and the second port of the radio frequency chip in the master tag.

[0167] S630, the controlled tag determines the connection status between the master tag and the controlled tag based on the detection signal.

[0168] It should be understood that, in one embodiment, when the controlled tag detects a detection signal (e.g., current or voltage) sent by the master tag, the controlled tag determines that the master tag is connected to the controlled tag.

[0169] In one embodiment, the controlled tag can update a status bit based on a detection signal. This status bit can be used to indicate the connection status between the master tag and the controlled tag.

[0170] S640, the controlled tag sends a second signal to the reader, which is used to indicate the connection status between the master tag and the controlled tag.

[0171] In one embodiment, the second signal may include the status bit of the controlled tag after it has been updated.

[0172] In one embodiment, prior to S640, method 600 may further include: S670, whereby the reader sends a third signal to the controlled tag.

[0173] The third signal is used to instruct the controlled tag to send the connection status between the master tag and the controlled tag to the reader. After receiving the third signal from the reader, the controlled tag sends the aforementioned second signal to the reader.

[0174] In one embodiment, the third signal may include a query instruction. Upon receiving the query instruction from the reader, the controlled tag sends its identifier to the reader. In another embodiment, upon receiving the query instruction from the reader, the controlled tag sends the connection status (second signal) between the master tag and the controlled tag to the reader.

[0175] S650: When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag. This pairing information instructs the master tag and the controlled tag to pair.

[0176] In one embodiment, the second signal is used to indicate that the master tag and the controlled tag are connected. When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag.

[0177] It should be understood that when the reader determines that the master tag and the controlled tag are connected, it instructs the master tag and the controlled tag to enter the pairing process. For the sake of brevity, the pairing process will not be described in detail.

[0178] Figure 10 is a schematic block diagram of a radio frequency identification device (RFID apparatus) according to an embodiment of this application.

[0179] As shown in Figure 10, the radio frequency identification (RFID) device includes a processing circuit 810 and a transceiver circuit 820. The processing circuit 810 and the transceiver circuit 820 can be interconnected or coupled, for example, interconnected via a bus 830. This RFID device can be an RFID tag, reader, etc., as described in the above embodiments. In one embodiment, the transceiver circuit 820 can be understood as an antenna as described in the above embodiments.

[0180] In one embodiment, the RFID device may further include a memory 840. The memory 840 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM), which is used for related instructions and data.

[0181] The processing circuit 810 can be all or part of the processing circuitry in one or more processors, or it can be one or more processors. The processor can be a central processing unit (CPU). If the processing circuit 810 is a CPU, the CPU can be a single-core CPU or a multi-core CPU. The processing circuit 810 can be a signal processor, a chip, or other integrated circuit capable of implementing the methods of this application, or a portion of the circuitry within the aforementioned processor, chip, or integrated circuit that performs processing functions. Additionally, the transceiver circuit 820 can be a transceiver, or an input / output interface. An input / output interface is used for inputting or outputting signals or data and can also be referred to as an input / output circuit.

[0182] For details on the implementation of the radio frequency identification (RFID) device, please refer to the above-described method embodiments.

[0183] The implementation of each operation in Figure 10 can also be described in the corresponding description of the method embodiments shown in Figures 1 to 7.

[0184] Figure 11 is a schematic block diagram of another radio frequency identification device (RFID apparatus) according to an embodiment of this application.

[0185] It should be noted that the radio frequency identification device (RFID apparatus) shown in Figure 11 can be used to implement the methods involved in the above embodiments.

[0186] The radio frequency identification (RFID) device includes a transceiver unit 910 and a processing unit 920. The transceiver unit 910 and the processing unit 920 are described below as examples.

[0187] The transceiver unit 910 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform the transmitting action of the RFID device, and the receiving unit is used to perform the receiving action of the RFID device. For ease of description, the transmitting unit and the receiving unit are combined into one transceiver unit in this embodiment. This will be explained uniformly here and will not be repeated later.

[0188] In one embodiment, the radio frequency identification device further includes a storage unit 930 for storing programs or code for performing the aforementioned methods.

[0189] The transceiver unit in Figure 11 can correspond to the transceiver circuit in Figure 10, and the processing unit in Figure 11 can correspond to the processing circuit in Figure 10.

[0190] The apparatus embodiments shown in Figures 10 and 11 are used to implement the contents described in Figures 7 to 9. The specific execution steps and methods of the apparatus shown in Figures 10 and 11 can be found in the foregoing method embodiments.

[0191] This application also provides a chip, including a processor, for calling and executing instructions stored in a memory, causing a communication device on which the chip is installed to perform the methods described in the examples above. The memory may be integrated within the chip or located externally.

[0192] This application also provides another chip, including: an input interface, an output interface, and a processing circuit, wherein the input interface, the output interface, and the processor are connected through an internal connection path, and the processing circuit is used to execute code in memory. When the code is executed, the processing circuit is used to execute the methods in the above examples.

[0193] Optionally, the chip also includes a memory for storing computer programs or code. The input and output interfaces can be independent of each other, or they can be integrated into a single input / output interface.

[0194] The processing circuitry can be all or part of the processing circuitry in one or more processors, or one or more processors.

[0195] This application also provides a processor for coupling with a memory for performing the methods and functions of a network device or terminal device involved in any of the above embodiments.

[0196] In another embodiment of this application, a computer program product containing instructions is provided, which, when run on a computer, enables the implementation of the methods described in the foregoing embodiments.

[0197] This application also provides a computer program that, when run on a computer, enables the implementation of the methods described in the foregoing embodiments.

[0198] In another embodiment of this application, a computer-readable storage medium is provided, which stores a computer program that, when executed by a computer, implements the methods described in the foregoing embodiments.

[0199] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0200] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0201] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0202] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0203] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0204] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. If the above functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0205] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Claims

1. A pairing method for radio frequency identification (RFID) tags, characterized in that, Applied to a radio frequency identification (RFID) system, the system includes a reader, a master tag, and a slave tag, including: The reader sends a first signal to the master control tag, the first signal being used to instruct the master control tag to send a detection signal to the controlled tag; The reader receives a second signal, which indicates the connection status between the master tag and the controlled tag. When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag, which instructs the master tag and the controlled tag to pair.

2. The method according to claim 1, characterized in that, Before the reader sends the first signal to the master control tag, the method further includes: The reader broadcasts an activation signal, which is used to activate the master control tag and the controlled tag. The activation signal is also used to instruct the master control tag to send its identifier to the reader.

3. The method according to claim 1 or 2, characterized in that, The reader receives a second signal, including: The reader sends a third signal to the master control tag, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; The reader receives the second signal from the master control tag.

4. The method according to claim 1 or 2, characterized in that, The reader receives a second signal, including: The reader sends a fourth signal to the controlled tag, the fourth signal being used to instruct the controlled tag to send the connection status between the master tag and the controlled tag to the reader; The reader receives the second signal from the controlled tag.

5. A pairing method for radio frequency identification tags, characterized in that, Applied to a radio frequency identification (RFID) system, the system includes a reader, a master tag, and a slave tag, including: The master control tag receives a first signal from the reader, the first signal being used to instruct the master control tag to send a detection signal to the controlled tag; The master control tag sends the detection signal to the controlled tag and determines the connection status between the master control tag and the controlled tag based on the detection signal; The master control tag sends a second signal to the reader, the second signal being used to indicate the connection status between the master control tag and the controlled tag.

6. The method according to claim 5, characterized in that, The method further includes: The master control tag receives an activation signal from the reader. The activation signal is used to activate the master control tag and also to instruct the master control tag to send its identifier to the reader.

7. The method according to claim 5 or 6, characterized in that, The master control tag sends a second signal to the reader, including: The master control tag receives a third signal from the reader, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; The master control tag sends the second signal to the reader.

8. The method according to any one of claims 5 to 7, characterized in that, The method further includes: The master control tag receives pairing information from the reader, and the pairing information is used to instruct the master control tag to pair with the controlled tag.

9. A pairing method for radio frequency identification tags, characterized in that, Applied to a radio frequency identification (RFID) system, the system includes a reader, a master tag, and a slave tag, including: The reader sends a first signal to the master control tag, the first signal being used to instruct the master control tag to send a detection signal to the controlled tag; The master control tag receives the first signal from the reader and sends the detection signal to the controlled tag; The master control tag determines the connection status between the master control tag and the controlled tag based on the detection signal; The master control tag sends a second signal to the reader, the second signal being used to indicate the connection status between the master control tag and the controlled tag; When the master tag and the controlled tag are connected, the reader sends pairing information to the master tag, which instructs the master tag and the controlled tag to pair.

10. The method according to claim 9, characterized in that, The master tag or the controlled tag sends a second signal to the reader, including: The reader sends a third signal to the master control tag, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; The master control tag receives the third signal from the reader and sends the second signal to the reader.

11. A radio frequency identification system, characterized in that, The system includes a reader, a master tag, and a controlled tag; The reader is used to send a first signal to the master control tag, and the first signal is used to instruct the master control tag to send a detection signal to the controlled tag; The master control tag is used to receive the first signal from the reader and to send the detection signal to the controlled tag; The master control tag is also used to determine the connection status between the master control tag and the controlled tag based on the detection signal; The master control tag is also used to send a second signal to the reader, the second signal being used to indicate the connection status between the master control tag and the controlled tag; When the master tag and the controlled tag are connected, the reader is also used to send pairing information to the master tag, the pairing information being used to instruct the master tag and the controlled tag to pair.

12. The system according to claim 11, characterized in that, The reader is also used to send a third signal to the master control tag, the third signal being used to instruct the master control tag to send the connection status between the master control tag and the controlled tag to the reader; The master control tag is also used to receive the third signal from the reader and send the second signal to the reader.

13. A radio frequency identification device, characterized in that, Includes a processor, said processor being configured to, by executing computer programs or instructions, or by executing logic circuits, The radio frequency identification device performs the method according to any one of claims 1 to 4; or, This causes the radio frequency identification device to perform the method according to any one of claims 5 to 8.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a device or computer, cause the device to perform the method as described in any one of claims 1 to 4, or cause the device to perform the method as described in any one of claims 5 to 8.

15. A computer program product, characterized in that, The computer program product includes a computer program or instructions for performing the method as described in any one of claims 1 to 4, or a computer program or instructions for performing the method as described in any one of claims 5 to 8.

16. A radio frequency identification tag, characterized in that, include: Connector; The radio frequency chip has a first port coupled to a first connection port of the connector, and a second port of the radio frequency chip is coupled to a second connection port of the connector. The element has a first end coupled to the first port and the first connection port, and a second end coupled to the second port and the second connection port.

17. The radio frequency identification tag according to claim 16, characterized in that, The element is a resistor, or the element is a circuit that can be equivalent to a resistor.

18. The radio frequency identification tag according to claim 16 or 17, characterized in that, The equivalent resistance of the element is less than or equal to 2MΩ.

19. The radio frequency identification tag according to claim 16, characterized in that, The first port is the power supply port, and the second port is the antenna negative port.

20. The radio frequency identification tag according to claim 16, characterized in that, The first port is a voltage output port, and the second port is a grounding port.

21. The radio frequency identification tag according to claim 16, characterized in that, The RFID tag also includes an antenna, with the third port of the RFID chip coupled to the positive port of the antenna, and the fourth port of the RFID chip coupled to the negative port of the antenna.

22. The radio frequency identification tag according to claim 16, characterized in that, The RFID tag also includes a substrate, on which the connector, RFID chip, and the components are located.

23. An optical fiber, characterized in that, It includes a radio frequency identification tag as described in any one of claims 16 to 22 and a fiber optic connection port, wherein the radio frequency identification tag is fixedly connected to the fiber optic connection port.

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