RFID (Radio Frequency Identification Device)

Abstract

The embodiment of the invention provides an RFID (Radio Frequency Identification) device. The device comprises a structure base body and an RFID identification assembly fixed on the structure base body, wherein the RFID identification assembly comprises an RFID reader-writer and a distributed near field antenna array; the distributed near-field antenna array is used for generating gradient electric field distribution so as to improve the field intensity uniformity of a coverage area and the field intensity suppression degree of a non-coverage area; and the RFID reader-writer is used for identifying the RFID tag information received by the distributed near-field antenna array from the coverage area.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of computer technology, and in particular to an RFID radio frequency identification device. Background Art

[0002] In the supply chain system, RFID (Radio Frequency Identification)-based turnover objects (such as turnover logistics boxes and containers) are often used to carry items; the life cycle of the turnover objects is closely linked to the life cycle of the items they carry.

[0003] One or more RFID tags can be deployed on turnover objects, each of which records the corresponding cargo information. At each stage of the logistics turnover, RFID readers can identify the RFID tag information on the turnover object and thus detect the corresponding loaded items.

[0004] In existing RFID technology, the RFID reader must be close to the RFID tag to identify the RFID tag information; however, in order to improve turnover efficiency in logistics turnover, the turnover objects are usually loaded with a lot of goods, so many RFID tags need to be identified. The distance between these RFID tags may exceed the recognition range of a single RFID reader, which makes it easy for RFID tag information to be missed.

[0005] Once RFID tag information is missing, the life cycle of the turnover object and the items it carries will be disrupted, causing data anomalies in the supply chain. Summary of the Invention

[0006] The embodiments of this specification provide an RFID radio frequency identification device. The device includes:

[0007] a structural base, and an RFID identification component fixed to the structural base;

[0008] Wherein, the RFID identification component includes an RFID reader and a distributed near-field antenna array;

[0009] The distributed near-field antenna array is used to generate a gradient electric field distribution to improve the field strength uniformity in the coverage area and the field strength suppression in the non-coverage area;

[0010] The RFID reader is used to batch identify multiple RFID tag information received by the distributed near-field antenna array from the coverage area.

[0011] Optionally, the distributed near-field antenna array includes multiple heterogeneous antenna units of microwave transmission structures.

[0012] Optionally, the device is installed on a turnover object used to load goods to identify RFID tag information in an RFID tag on the turnover object.

[0013] Optionally, the device further comprises a display interaction component fixed to the structural base;

[0014] The display interaction component communicates with the RFID identification component in a wired or wireless manner to display the RFID tag information identified by the RFID identification component.

[0015] Optionally, the RFID identification component further includes a sensor for collecting environmental information.

[0016] Optionally, the RFID identification component further includes a computer for processing data of the RFID tag information identified by the RFID reader and / or the environmental information collected by the sensor.

[0017] Optionally, the RFID identification component further includes a power supply;

[0018] The power supply is used to power the RFID reader, the distributed near-field antenna array, the sensor, the computer and / or the display interaction component.

[0019] Optionally, the shape of the distributed near-field antenna array corresponds to the shape of the turnover object.

[0020] Optionally, the RFID reader is connected to the router via a preset communication protocol, and the identified RFID tag information is sent to the server via the router.

[0021] Optionally, the preset communication protocol includes the TCP / IP protocol.

[0022] The embodiments of this specification provide an RFID radio frequency identification device that uses a distributed near-field antenna array to generate a gradient electric field distribution, thereby improving field strength uniformity in the coverage area and suppressing field strength in uncovered areas. The more uniform field strength within the coverage area allows the RFID reader to more accurately identify RFID tags of objects circulating within the coverage area. Furthermore, the suppressed field strength in uncovered areas prevents the recognition of RFID tags outside the coverage area, thereby preventing disruptions in the lifecycles of different circulating objects and their contents. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of an RFID radio frequency identification device provided in one embodiment of this specification;

[0024] Figure 2is a schematic diagram of an RFID identification component provided in an embodiment of this specification;

[0025] Figure 3 is a schematic diagram of a distributed near-field antenna array provided in an embodiment of this specification;

[0026] Figure 4 This is a simulation diagram of the gradient electric field distribution of the heterogeneous antenna unit provided in one embodiment of this specification;

[0027] Figure 5 This is a schematic diagram of a usage scenario of an RFID radio frequency identification device provided in an embodiment of this specification;

[0028] Figure 6 This is a schematic diagram of an RFID radio frequency identification system provided in one embodiment of this specification. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of this specification, as detailed in the appended claims.

[0030] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. As used in this specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information without departing from the scope of this specification. Depending on the context, the term "if" as used herein may be interpreted as "when," "when," or "in response to determining."

[0032] This manual provides an RFID radio frequency identification device. Please refer to the following Figure 1 This section introduces the schematic diagram of the RFID radio frequency identification device provided in this manual.

[0033] like Figure 1As shown, the RFID radio frequency identification device 100 may include:

[0034] A structural base 3, and an RFID identification component 1 fixed to the structural base 3;

[0035] The RFID identification component 1 may include an RFID reader (not shown in the figure) and a distributed near-field antenna array (not shown in the figure);

[0036] The distributed near-field antenna array is used to generate a gradient electric field distribution to improve the field strength uniformity in the coverage area and the field strength suppression in the non-coverage area;

[0037] The RFID reader is used to identify the RFID tag information received by the distributed near-field antenna array from the coverage area.

[0038] In the embodiments of this specification, a distributed near-field antenna array generates a gradient electric field distribution to improve field strength uniformity in the coverage area and suppress field strength in uncovered areas. The more uniform field strength within the coverage area allows RFID readers to more accurately identify RFID tags of objects circulating within the coverage area. Furthermore, the suppressed field strength in uncovered areas prevents recognition of RFID tags outside the coverage area, thus preventing disruptions in the lifecycles of different circulating objects and their contents.

[0039] It is understandable that the RFID identification component 1 can be fixed in the structural base 3 by any fixing method, for example, the RFID identification component 1 can be fixed by snap-fitting, screw fixing or any other fixing method.

[0040] It should be noted that the RFID identification component 1 can be fixed in the structural matrix 3 in a detachable fixing manner.

[0041] In an exemplary embodiment, Figure 2 As shown, the RFID identification component 1 may include an RFID reader 102 and a distributed near-field antenna array 103 .

[0042] The distributed near-field antenna array 103 may further include a plurality of heterogeneous antenna units of microwave transmission structures.

[0043] In this specification, based on the idea of ​​gradient electric field distribution and the differences in electric field distribution characteristics of different microwave transmission structures, the following are designed: Figure 3 The heterogeneous antenna units 1031 of the multiple microwave transmission structures are shown.

[0044] Further references Figure 4As shown, the heterogeneous antenna unit 1031 can generate a gradient electric field distribution, which is shown in the three-dimensional space field strength simulation 63. The gains in different directions are shown in the total gain detailed table 62, and different colors correspond to different gain values.

[0045] Gain is typically used to describe an antenna's radiation efficiency. Higher gain indicates a more efficient antenna, maintaining signal strength over longer distances. In this specification, gain is used to evaluate the directivity and focusing capabilities of heterogeneous antenna unit 1031.

[0046] The total gain detailed table 62 may be a total gain value (GainTotal) synthesized based on the gains of the heterogeneous antenna units 1031 in various directions. For example, the total gain value may include the square root of the sum of the squares of the gains in the Phi and Theta directions shown in the three-dimensional field strength simulation 63.

[0047] Wherein, Phi direction is the normal direction of the circular surface, and the gain in Phi direction is the value measured in the normal direction of the circular surface (in dB);

[0048] Theta direction is the tangent direction of the circle in the xy plane, and the gain in the Theta direction is the value (in db) measured in the tangent direction of the circle in the xy plane.

[0049] Through the heterogeneous antenna units 1031 of the above-mentioned multiple microwave transmission structures, not only can a gradient electric field distribution be generated to improve the field strength uniformity of the coverage area and the field strength suppression of the non-coverage area; thereby increasing the compatibility of RFID tag performance and radiation directionality; but also, the radiation direction of the heterogeneous antenna unit 1031 can be precisely controlled to cover the area to be covered, thereby achieving precise control of the coverage area.

[0050] In an exemplary embodiment, the RFID device 100 may be installed on a turnover object used to carry goods, so as to identify RFID tag information in an RFID tag on the turnover object.

[0051] like Figure 5 A schematic diagram showing an exemplary use scenario of an RFID radio frequency identification device is shown. Figure 5 The RFID radio frequency identification device 100 can be installed on the back of the turnover box 4 with pulleys.

[0052] By configuring an appropriate number of heterogeneous antenna units 1031 with microwave transmission structures and their corresponding radiation directions, the heterogeneous antenna units 1031 in the RFID device 100 can cover the area where the turnover box 4 is located, while treating all other areas as non-coverage areas. This allows the RFID device 100 to batch-identify RFID tag information in turnover boxes 4, ensuring that no RFID tag information in turnover boxes 4 is missed and preventing erroneous identification of RFID tags in non-coverage areas, such as those in another turnover box. This allows for accurate identification of the current turnover object.

[0053] In an exemplary embodiment, Figure 1 As shown, the RFID radio frequency identification device 100 further includes a display interaction component 2 fixed to the structural base 3;

[0054] The display interaction component 2 communicates with the RFID identification component 1 via a wired or wireless manner to display the RFID tag information identified by the RFID identification component 1 .

[0055] In the embodiment of this specification, by setting up a display interaction component, the RFID tag information identified by the RFID reader 102 in the RFID identification component 1 from the coverage range of the distributed near-field antenna array 103 can be intuitively displayed, thereby providing it to logistics staff for viewing.

[0056] In an exemplary embodiment, Figure 2 The RFID identification component 1 shown may further include a sensor 105 for collecting environmental information.

[0057] In the embodiments of this specification, the sensor 105 may include one or more different types of sensors, each of which may collect different environmental information. For example, a light sensor may collect light brightness, a smoke sensor may collect airborne particle counts, a temperature sensor may collect current ambient temperature, a humidity sensor may collect current ambient humidity, and so on.

[0058] By combining this environmental information with relevant environmental information processing logic, it is possible to analyze and determine whether the current environment meets the preset judgment conditions, and trigger subsequent control logic when the pre-sale judgment conditions are met. For example, when the smoke sensor collects a particle value in the air that reaches a preset value, it indicates that a fire may have occurred, and thus a fire alarm can be triggered to ensure personnel safety. For another example, when the temperature sensor collects a temperature value of the current environment that is greater than a preset value, it indicates that the temperature is high, and thus it can trigger cooling measures (such as increasing the ventilation volume, turning on cooling equipment such as fans and air conditioners, etc.) to avoid heatstroke and other problems caused by equipment abnormalities due to excessively high temperatures.

[0059] In an exemplary embodiment, Figure 2 The RFID identification component 1 may further include a computer 101 for processing the RFID tag information identified by the RFID reader 102 and / or the environmental information collected by the sensor 105 .

[0060] In the embodiments of this specification, since the RFID reader 102 and sensor 105 themselves only have the function of data collection or data recognition, they are also required to use the computer 101 with data processing capabilities to perform subsequent processing based on the RFID tag information and / or environmental information.

[0061] Taking the environmental information shown in the above embodiment as an example, although the temperature sensor can collect the temperature of the current environment, the temperature sensor itself does not have environmental information processing logic. It is also necessary to use the computer 101 to use the environmental information processing logic stored in the computer 101 to determine whether the temperature collected by the temperature sensor is greater than the preset value. After the temperature is greater than the preset value, the cooling measures are triggered (such as increasing the ventilation volume, turning on cooling equipment such as fans and air conditioners, etc.) to avoid heatstroke and other problems caused by equipment abnormalities due to excessively high temperatures.

[0062] It is understandable that the RFID tag information identified by the RFID reader 102 can also be processed by the computer 101, such as converting the RFID tag information identified by the RFID reader into a data format that can be recognized by the display interaction component 2, etc.

[0063] In an exemplary embodiment, Figure 2 The RFID identification assembly 1 shown may also include a power supply 104;

[0064] The power supply 104 is used to supply power to the RFID reader 102 , the distributed near-field antenna array 103 , the sensor 105 , the computer 101 and / or the display interaction component 2 .

[0065] It is understandable that the RFID reader 102 , distributed near-field antenna array 103 , sensor 105 , computer 101 and / or the display interaction component 2 are all power-consuming devices and therefore require power supply from the power supply 104 to operate normally.

[0066] In an exemplary embodiment, the shape of the distributed near-field antenna array corresponds to the shape of the turnover object.

[0067] It should be noted that the shape of the distributed near-field antenna array can be customized to be well adapted to the turnover object according to the shape of the turnover object. Figure 5As shown, since the longitudinal section of the turnover box 4 is a relatively regular rectangle (long vertical lines and short horizontal lines), the shape of the distributed near-field antenna array can be set to match the shape and size of the rectangle. This can balance the recognition accuracy of the RFID tag information and the device cost of the RFID radio frequency identification device.

[0068] In an exemplary embodiment, the RFID reader is connected to the router via a preset communication protocol, and the identified RFID tag information is sent to the server via the router.

[0069] like Figure 6 The schematic diagram of the RFID radio frequency identification system shown is as follows. The system may include the RFID radio frequency identification device shown in any of the aforementioned embodiments, and a router connected to the RFID reader in the RFID radio frequency identification device.

[0070] The router and the RFID reader can be connected via a preset communication protocol, and the identified RFID tag information is sent to the server via the router.

[0071] Exemplarily, the preset communication protocol may include TCP / IP, and the server may be a physical server or a cloud-based service platform.

[0072] In the embodiments of this specification, each RFID device can be connected to the server by setting a router, so that each RFID device can obtain relevant services provided by the server.

[0073] For example, in storage services, each RFID radio frequency identification device can upload the RFID tag information identified by its own RFID reader to the server for storage;

[0074] For another example, in the verification service, the server can verify the RFID tag information uploaded by the RFID radio frequency identification device and match it with the pre-stored RFID tag information of the same turnover object to determine whether there is any RFID tag information omission or misidentification.

[0075] For example, in the case of traceability service, if an item is lost or abnormal in the future, the RFID tag information stored on the server can be used to record the traceability and locate the responsible party such as the turnover object, RFID radio frequency identification device, etc. that has the error.

[0076] like Figure 6 As shown, the router and the I / O module that receives the environmental information collected by the sensor can be connected through a preset communication protocol, and the environmental information is sent to the server through the router.

[0077] Similar to the previous embodiment, the preset communication protocol may include TCP / IP, and the server may be a physical server or a cloud service platform. The server may provide storage services, traceability services, and the like for environmental information.

[0078] like Figure 6 As shown, the router and the host computer of the RFID radio frequency identification device can also be connected using the TCP / IP communication protocol, and the host computer transmits the RFID tag information identified by the RFID reader to the display interaction component, so that the display interaction component displays the RFID tag information identified by the RFID reader.

[0079] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0080] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this specification and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present invention being indicated by the following claims.

[0081] It should be understood that the present description is not limited to the exact structure that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

Claims

1. An RFID radio frequency identification device, comprising: a structural base, and an RFID identification component fixed to the structural base; Wherein, the RFID identification component includes an RFID reader and a distributed near-field antenna array; The distributed near-field antenna array is used to generate a gradient electric field distribution to improve the field strength uniformity in the coverage area and the field strength suppression in the non-coverage area; The RFID reader is used to batch identify multiple RFID tag information received by the distributed near-field antenna array from the coverage area. 2 . The apparatus according to claim 1 , wherein the distributed near-field antenna array comprises heterogeneous antenna units of a plurality of microwave transmission structures.

3. The device according to claim 1, wherein the device is installed on a turnover object used to load goods to identify RFID tag information in an RFID tag on the turnover object.

4. The device according to claim 1, further comprising a display interaction component fixed to the structural base; The display interaction component communicates with the RFID identification component in a wired or wireless manner to display the RFID tag information identified by the RFID identification component. The device according to claim 1 , wherein the RFID identification component further comprises a sensor for collecting environmental information.

6. The device according to claim 5, wherein the RFID identification component further comprises a computer for processing the RFID tag information identified by the RFID reader and / or the environmental information collected by the sensor.

7. The device according to claim 6, wherein the RFID identification component further comprises a power supply; The power supply is used to power the RFID reader, distributed near-field antenna array, sensor, computer and / or display interaction component. The apparatus according to claim 3 , wherein a shape of the distributed near-field antenna array corresponds to a shape of the rotatable object.

9. The device according to claim 1, wherein the RFID reader is connected to the router via a preset communication protocol, and the identified RFID tag information is sent to the server via the router.

10. The device according to claim 9, wherein the preset communication protocol comprises TCP / IP protocol.

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