Table tennis bat capable of being automatically recognized

Abstract

The utility model relates to a table tennis bat capable of automatically identifying, which can avoid the problem of signal shielding caused by holding a handle when the table tennis bat is taken or put in from an intelligent renting and selling cabinet or a storage cabinet by arranging an RFID (Radio Frequency Identification Device) layer on a bottom plate of the table tennis bat, and ensure the stability and the strength of an RFID signal. And the accuracy and reading efficiency of identifying the table tennis bats by the intelligent storage cabinet are improved. In addition, the RFID layer can be preset in the bottom plate through a standardized technological process, complicated handle transformation or customized design is not needed, the manufacturing process is simplified, and the production cost is reduced. If the RFID tag needs to be maintained or replaced, the design of the position of the bottom plate is easier to operate and replace, the application range of the RFID technology in the field of sports equipment is expanded, and the industrial practicability and market competitiveness of the table tennis bat are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of table tennis rackets, and more specifically, relates to a table tennis racket that can be automatically identified. Background Art

[0002] The design of table tennis rackets is mainly aimed at improving their competitive performance, and the structural design focuses on weight, balance, grip, and materials. Integrating RFID (Radio Frequency Identification) technology into sports equipment is a relatively new development. The application of RFID technology in sports equipment including table tennis rackets aims to enhance the user experience by enabling automatic identification and tracking.

[0003] Currently, it is common to set RFID tags on the handle of a table tennis racket. For sports clubs and facilities, the RFID tags on the table tennis racket can simplify inventory management, ensure that the equipment is not lost or stolen, and can be properly maintained. However, due to the unreliable reading of the RFID tags at the handle position, the intelligent storage cabinet may need to try reading multiple times or take a longer time to confirm the item information, which will reduce the access speed and efficiency. In addition, if players need to specifically adjust the handle direction when storing or retrieving the racket to ensure successful reading, it will increase the operation complexity and is not conducive to the user experience.

[0004] Setting RFID tags on the handle of a table tennis racket has problems such as signal occlusion, limited reading distance, and inaccurate reading in the linked use with an intelligent storage cabinet. These will all affect the reading efficiency and accuracy of the intelligent storage cabinet, reducing the user experience and the effectiveness of storage management. Therefore, it is urgent to develop a table tennis racket with RFID tags in an appropriate position to fully avoid signal occlusion, optimize the reading efficiency and accuracy, and improve the linkage effect between the table tennis racket and the intelligent storage cabinet. Summary of the Utility Model

[0005] In view of the above technical problems, the utility model provides a table tennis racket that can be automatically identified, in order to improve the problems of signal occlusion, limited reading distance, and inaccurate reading existing in setting RFID tags on the handle of the table tennis racket in the prior art, and at the same time enhance the industrial practicability of the table tennis racket that can be automatically identified.

[0006] To achieve the above object, the utility model provides a table tennis racket that can be automatically identified. The table tennis racket includes a bottom plate and a handle connected thereto. The bottom plate includes at least one wood layer and at least one composite material layer that are joined together. Among them, an RFID layer is provided on the bottom plate, and the RFID layer includes an antenna and a chip, and the antenna is electrically connected to the chip.

[0007] In some embodiments, the RFID layer is provided on the wood layer.

[0008] Preferably, a first limiting groove is provided on the wood layer, and the depth and shape of the first limiting groove are adapted to the RFID layer, and the RFID layer is fixed in the first limiting groove. In the above embodiments, the RFID layer can be precisely embedded in the first limiting groove. This structural design can ensure the fixed position of the RFID layer, avoid displacement or loosening during use, thereby improving the stability and reading accuracy of the RFID signal. The wood layer can provide better physical protection for the RFID layer, reduce the risk of physical damage such as external impact and friction, and effectively extend the service life of the RFID layer. Embedding the RFID layer into the first limiting groove adapted thereto can maintain the surface flatness and structural integrity of the racket, and can maintain the weight distribution and elastic performance of the racket. Opening standardized limiting grooves on the wood layer can make the installation process of the RFID layer more simple and efficient, which is beneficial to mass production. At the same time, the setting of the limiting groove also allows more precise automated equipment to participate in the production, further reducing production costs and improving production efficiency.

[0009] In some other embodiments, the RFID layer is disposed on the composite material layer. More preferably, a second limiting groove is provided on the composite material layer, and the depth and shape of the second limiting groove are adapted to the RFID layer, and the RFID layer is fixed in the second limiting groove.

[0010] In such embodiments, since the composite material layer usually has better electromagnetic wave transmission and lower signal interference characteristics, it can further avoid the shielding and interference of the material on the RFID signal, thereby improving the quality and range of signal transmission, and better optimizing the signal reception effect of the RFID reader, especially in complex environments. The composite material layer usually has high strength and impact resistance, and can better protect the RFID layer from external impact and vibration. Embedding the RFID layer into the limiting groove of the composite material layer can utilize the characteristics of the composite material to improve the durability of the entire RFID module, especially in intense competition or training scenarios, and can more effectively prevent the RFID layer from being damaged due to impact or vibration.

[0011] In some optimized embodiments, the first limiting groove and the second limiting groove are formed by a laser engraving process. In these embodiments, the laser engraving process can achieve extremely high processing accuracy, and can precisely control the depth, shape and position of the limiting groove. Compared with traditional mechanical processing methods, laser engraving reduces human error, ensures that the dimensions and shapes of the RFID limiting grooves of each table tennis racket are exactly the same, and ensures high precision and consistency.

[0012] In some embodiments, the antenna includes a bonding portion, an extending portion, and an expanding portion. The bonding portion is connected to the chip, and at least one extending portion extends from the bonding portion. The expanding portion is connected to the extending portion, and the area of the expanding portion is larger than that of the extending portion. Such a design can provide a larger electromagnetic radiation surface, increasing the radiation efficiency of the RFID antenna. A larger radiation area means that the antenna can transmit and receive electromagnetic waves more effectively, thereby significantly expanding the working range of the RFID tag and enhancing the signal coverage ability. The combined design of the extending portion and the expanding portion helps to optimize the impedance matching of the antenna, which is crucial for the electrical signal transmission efficiency between the RFID chip and the antenna. Good impedance matching can reduce signal reflection and power loss, ensuring that more signal energy is used for effective communication and improving the overall performance of the RFID system. Since the expanding portion increases the radiation surface and the emission efficiency of the electromagnetic field, the power required by the RFID layer during operation is reduced, which is particularly critical for passive RFID systems. The reduced power consumption means that the RFID tag can operate in a lower energy environment, extending its service life and improving the energy utilization efficiency. The design of the expanding portion increases the sensing area and sensitivity of the antenna to signals in different directions, enabling it to better capture electromagnetic waves incident from various angles. Due to the larger area and enhanced structure of the expanding portion of the antenna, it can better resist external physical stress and mechanical damage, improving the durability and reliability of the RFID tag. The combined design of the expanding portion and the extending portion enables the antenna to operate in a wider frequency band range, supporting multi-band operation. This is particularly important for multi-functional RFID systems that need to operate at different frequency bands, as it can adapt to more application scenarios and reader configurations, improving the flexibility and adaptability of the system. The addition of the expanding portion provides a larger signal transmission and reception surface, making the signal intensity of the antenna more consistent in all directions. This reduces the volatility of the signal intensity, helping to maintain stable RFID communication under various operating conditions and improving the reliability of the system.

[0013] In some embodiments, the extension portion has at least one bending structure. In this way, the bending structure can enable the extension portion of the antenna to be more compactly arranged in the bottom plate or composite material layer of the table tennis racket, making full use of the limited space, ensuring an increase in the length of the antenna within the limited physical area of the bottom plate, improving the working efficiency of the antenna without increasing the volume of the device. It can help optimize the electromagnetic field distribution of the antenna, making the signal reception and transmission of the antenna more sensitive in a specific direction. This design can improve the reading distance and accuracy of the RFID system in a specific direction, and is particularly suitable for precise item identification and positioning in specific application scenarios. The bending structure design can reduce the mutual coupling interference between the antenna extension portions, avoid signal overlap and phase misalignment, contribute to improving the signal clarity and stability of the RFID antenna, reduce misreading and signal attenuation, and improve the overall performance of the system. By introducing the bending structure, the electrical length of the antenna can be precisely adjusted, thereby changing the resonant frequency and frequency response characteristics of the antenna. This design allows for optimizing the performance of the antenna under different operating frequency bands and enhancing the applicability of the RFID tag under various frequency conditions. The antenna extension portion with the bending structure can provide better elasticity and deformation ability when subjected to external impacts or mechanical stresses, reducing the risk of damage to the antenna when it is physically squeezed, bent or impacted, and improving the durability and lifespan of the antenna.

[0014] In some more preferred embodiments, the number of the extension parts is two, and they are arranged near the side edges of the bottom plate. In these embodiments, the two extension parts are symmetrically arranged on the side edges of the bottom plate, which can balance the electromagnetic field distribution of the antenna and improve the signal uniformity. The symmetrical design helps to reduce the signal asymmetry problem that may occur in the single-sided antenna design, ensuring that the signal intensity of the RFID tag is more uniform in all directions and improving the signal detection ability of the reader. The arrangement of the two extension parts near the side edges of the bottom plate can make the signal transmission path more direct, reduce the reflection and attenuation of the signal when passing through the material layer, help to reduce internal interference and signal loss, thereby improving the signal transmission efficiency and reading accuracy. The extension parts are arranged at the side edges of the bottom plate, which can utilize the structural strength of the edges to protect the antenna and reduce the damage that may be caused by the impact or bending of the central area. The antenna at the edge position is less likely to be directly impacted externally, extending the service life of the RFID tag and improving the durability of the product. The two extension parts are located at the side edges of the bottom plate, making the signal coverage range of the antenna wider in multiple directions. This arrangement helps to improve the sensitivity and detection ability of the RFID system in different directions, especially when the racket moves quickly or is placed at multiple angles, and can provide a more reliable signal reading effect. The design of the antenna extension parts at the side edges reduces the possible electromagnetic interference from the middle part and the handle part of the racket, and also reduces the interference from the user's palm and other devices. This design helps to maintain the stability and clarity of the RFID signal, especially when used in a noisy electromagnetic environment. The extension parts are arranged at the side edges of the bottom plate, allowing for a more flexible antenna layout design and manufacturing process. Such an arrangement does not require a large-scale modification of the core structure of the bottom plate, helps to simplify the manufacturing process, reduce the production complexity and cost, and is suitable for mass production and the design of different models of table tennis rackets.

[0015] Furthermore, the chip is disposed at a position on the bottom plate close to the handle, and the antennas are symmetrically arranged on both sides of the chip. In this way, the coverage range and transmission efficiency of the RFID signal are significantly improved. The symmetrically arranged antennas can transmit and receive signals more evenly, reducing signal dead zones and blind spots, thereby improving the reading accuracy and distance of the RFID system. This is particularly important for quickly reading RFID information in a dynamic environment, such as when quickly picking up and placing a table tennis racket. The antennas being symmetrically arranged on both sides of the chip can effectively reduce electromagnetic interference from different directions because the antennas can form a more uniform electromagnetic field distribution around the chip. This layout reduces the self-interference effect between the antennas, thereby enhancing the signal strength and stability and improving the reading reliability of the RFID tag under various environmental conditions. The antennas being symmetrically arranged on both sides of the chip can reduce the length and complexity of the antenna wiring, thereby reducing the total resistance and power consumption of the circuit. The simplified circuit design not only helps reduce costs during the manufacturing process but also can extend the working life of the RFID tag, especially in the case of passive RFID tags with limited energy.

[0016] Different from the prior art, the above technical solution can avoid the problem of signal occlusion caused by holding the handle when taking out or putting in a table tennis racket from an intelligent rental or storage cabinet by setting the RFID layer on the bottom plate of the table tennis racket. The RFID layer is set on the bottom plate of the table tennis racket and is not affected by being held, and can transmit and receive signals more freely, ensuring the stability and strength of the RFID signal. Integrating the RFID layer into the bottom plate can make the position of the RFID layer closer to the RFID reader of the intelligent storage cabinet, effectively expanding the reading range and distance of the RFID tag, improving the reading efficiency and accuracy of the reader. Especially when the racket is stored, the position of the bottom plate is more conducive to being detected by the reader. At the same time, the bottom plate is not easily blocked by the hand and the position is fixed, which can provide a more accurate reading result, reducing the probability of misreading or failure to read, thereby improving the accuracy of the intelligent storage cabinet in identifying the table tennis racket. Integrating the RFID layer into the wood layer or composite material layer of the bottom plate can better protect the RFID tag from the external environment due to multi-layer lamination, thereby extending the service life of the RFID tag and improving its industrial practicability. At the same time, placing the RFID layer inside the internal structure of the bottom plate will not change the shape, feel, weight distribution and overall performance of the racket, and the automatic identification function can be realized without sacrificing the original performance of the racket. The user experience is not affected, and the comfort and controllability of the racket are maintained. In addition, presetting the RFID layer in the bottom plate can be achieved through a standardized process, without the need for complex handle modification or customized design, simplifying the manufacturing process and reducing the production cost. If maintenance or replacement of the RFID tag is required, the design of the bottom plate position is easier to operate and replace. This design is more suitable for application scenarios of various intelligent sports equipment storage or rental devices, including intelligent storage, automated data collection, etc., expanding the application scope of RFID technology in the field of sports equipment and improving the industrial practicability and market competitiveness of table tennis rackets.

[0017] The above relevant description of the utility model content is only an overview of the technical solution of this application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of this application, and then can be implemented according to the content recorded in the description and the drawings, and in order to make the above objects, other objects, features and advantages of this application more easily understood, the following will be described in conjunction with the specific implementation manners and drawings of this application. Brief Description of the Drawings

[0018] The drawings are only used to illustrate the principles, implementation manners, applications, features and effects of the specific implementation manners and other related contents of this application, and should not be considered as a limitation to this application.

[0019] In the accompanying drawings of the specification:

[0020] Figure 1Schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0021] Figure 2 Another schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0022] Figure 3 Another schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0023] Figure 4 Another schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0024] Figure 5 Another schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0025] Figure 6 Another schematic diagram of a table tennis racket structure that can be automatically recognized provided by the present utility model;

[0026] Figure 7 Schematic diagram of the structure layer of the RFID layer provided by the present utility model;

[0027] Figure 8 Three-dimensional diagram of a table tennis racket that can be automatically recognized and is laminated by multiple wood layers and composite material layers provided by the present utility model.

[0028] The descriptions of the reference numerals involved in the above-mentioned various drawings are as follows:

[0029] 1. Bottom plate; 11. Wood layer; 12. Composite material layer; 111. First limiting groove; 121. Second limiting groove; 2. Handle; 3. RFID layer; 31. Antenna; 311. Joint part; 312. Extension part; 3121. Bending structure; 313. Expansion part; 32. Chip. Detailed implementation manners

[0030] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects, etc. of the present application, the following is described in detail in conjunction with the listed specific embodiments and with reference to the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0031] References to "embodiments" in this specification mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The term "embodiment" as it appears at various places in the specification does not necessarily refer to the same embodiment, nor does it specifically limit the independence or relevance between other embodiments. In principle, in the present application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0032] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0033] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships, for example, A and / or B, which means: A exists, B exists, and both A and B exist simultaneously. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0034] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationship between these entities or operations.

[0035] Without further limitation, in this application, the use of the terms "comprising", "including", "having", or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the recited elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such process, method, or product.

[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the recited number; expressions such as "above", "below", "within", etc. are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0037] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiments or drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0038] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "joined", "fixed", "set", etc. used shall be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0039] Please refer to Figures 1-8 , this embodiment provides a table tennis racket that can be automatically recognized, and its design aims to achieve the automatic recognition function when the table tennis racket is deposited or taken out from an intelligent sharing device such as an intelligent storage cabinet / renting and selling cabinet. The structure of the table tennis racket and the connection relationship of each part are as follows:

[0040] 1. Structure of the bottom plate

[0041] The bottom plate 1 of the table tennis racket is composed of multiple layers of materials, specifically including at least one layer of wood layer 11. The wood layer 11 selects high-quality and lightweight wood, such as hinoki, ayous, walnut, etc. These woods are usually used in the manufacture of table tennis rackets to provide good elasticity and touch. 5 to 7 layers of wood layers (as Figure 8 shown) are joined and pressed with other layer materials by gluing to form the basic structure of the bottom plate 1. On the basis of the wood layer 11, the bottom plate 1 further includes at least one layer of composite material layer 12, such as carbon fiber, glass fiber or aramid fiber. These composite materials provide additional strength and rigidity, improving the durability and performance of the racket. The composite material layer 12 is joined with the wood layer through resin or adhesive to form a more stable multi-layer structure to improve the elasticity and stability of the racket.

[0042] 2. Setting of the RFID layer 3

[0043] Composition of the RFID layer 3: The RFID layer 3 is provided on the bottom plate. The RFID layer 3 includes a chip 32 and a pair of antennas 31. The chip 32 is used for storing and transmitting identification information, and the antennas 31 are used for transmitting and receiving radio frequency signals.

[0044] Position of the RFID layer 3: The RFID layer can be provided on the wood layer 11 or the composite material layer 12 of the bottom plate. In a preferred embodiment, the RFID layer 3 is provided on the wood layer ( Figure 1 , Figure 2 , Figure 3 ). A first limiting groove 111 matching the shape and size of the RFID layer 3 is designed on the wood layer. The RFID layer 3 is embedded in this limiting groove to ensure the fixed positions of the RFID chip 32 and the antennas 31 and prevent displacement or damage during use.

[0045] Alternatively, in other different embodiments, the RFID layer 3 can be provided on the composite material layer 12 ( Figure 4 , Figure 5 , Figure 6 ). A second limiting groove 121 matching the RFID layer 3 is provided on the composite material layer 12, and the RFID layer 3 is also embedded therein.

[0046] Please refer to Figure 7 , Design and connection of the antenna 31: The RFID antenna 31 includes a joint portion 311, two extension portions 312 extending from the joint portion 311, and an extension portion 313 connected to the end of the extension portion 312. The joint portion 311 is directly electrically connected to the RFID chip 322 to ensure the effectiveness of signal transmission. The design of the extension portions 312 and the extension portion 313 enables the antenna 31 to have a larger electromagnetic radiation area, improving the signal transmission and reception efficiency. The extension portion 312 can be designed to have at least one bending structure 3121 to enhance the signal reception ability in different directions and the anti-interference performance. The two extension portions 312 are symmetrically arranged on the side edges of the bottom plate 1 to optimize the signal coverage range and directivity.

[0047] 3. A sponge layer (not shown) is located between the bottom plate 1 and the rubber sheet (not shown), usually made of foamed rubber. Finally, there is the rubber sheet of the table tennis racket, which is usually divided into several types such as positive rubber, backspin rubber, long pimples rubber, and sandwich rubber.

[0048] 4. The handle of the table tennis racket

[0049] Connection of the handle 2: The handle 2 is fixed to the bottom plate 1 by an adhesive or a mechanical connection method, usually located at the tail end of the bottom plate. The handle 2 is made of materials that conform to ergonomic design, such as cork, rubber, or polyurethane, to provide a comfortable grip.

[0050] 5. The working principle of the table tennis racket

[0051] The industrial control computer of the vending machine with a rental function is connected to the RFID reader, used to receive the rental request message triggered by the user terminal from the system server, and according to the instruction of the rental request message, instruct the lock control board to open the corresponding rental box, and after the rental box is closed, instruct the RFID reader to read the information of the RFID tag on the automatically identifiable table tennis racket with the RFID layer in the vending machine.

[0052] When the selection information included in the rental request message triggered when renting an automatically identifiable table tennis racket is to specifically select a certain automatically identifiable table tennis racket, the industrial control computer can identify the rental box where the automatically identifiable table tennis racket selected by the user terminal is located according to the corresponding relationship established between the rental box and the automatically identifiable table tennis racket it rents, and instruct the lock control board to control the corresponding lock structure to open the rental box for the user to take away the shared item selected for rental.

[0053] In another preferred embodiment, the RFID layer 3 is embedded in the first limiting groove 111 and fixed in the groove by means of adhesive, adhesive or hot melt process. The size of the limiting groove is precisely controlled to make the RFID layer 3 fit tightly, preventing it from loosening or shifting during use. At the same time, the wood layer 11 provides a certain buffering and protection effect, reducing the risk of damage to the RFID layer 3 caused by impact or vibration. The antennas 31 are symmetrically arranged on both sides of the RFID chip 32, ensuring uniform signal coverage and stability. The joint of the antenna 31 is electrically connected to the chip 32, and the extension part 312 extends from the joint part 311 and forms a bending structure 3121 at an appropriate position to improve the signal reception effect.

[0054] Preferably, the RFID layer 3 is arranged on the composite material layer 12 of the table tennis racket bottom plate 1. A second limiting groove 121 is formed on the composite material layer 12, and its depth and shape are adapted to the RFID layer 3. The RFID layer 3 is embedded in the second limiting groove 121 and fixed by epoxy resin or other suitable adhesive materials. Since the composite material layer 12 usually has higher rigidity and durability, the RFID layer 3 can obtain better protection at this position, especially in high-intensity use scenarios, reducing the wear and damage of the RFID layer 3.

[0055] Both the first limiting groove 111 and the second limiting groove 121 are formed by laser engraving process, ensuring the accuracy and neatness of the groove opening. Laser engraving provides a high-precision processing method, reducing material waste and ensuring the precise installation position of the RFID layer 3.

[0056] Preferably, the RFID chip 32 is disposed at a position on the bottom plate 1 close to the handle 2, and the antennas 31 are symmetrically placed on both sides of the chip 32. By placing the chip 32 in the area close to the handle 2, the antennas 31 can better extend to a larger area of the entire table tennis racket bottom plate 1, ensuring that RFID signals can be effectively received and transmitted at any operating position. This design is particularly suitable for intelligent storage cabinet systems that require fast and multi-angle identification. The position close to the handle 2 is usually less stressed, and placing the chip 32 here can reduce the probability of its being stressed and impacted, improving the anti-damage ability of the chip 32.

[0057] Preferably, referring again to Figure 7 , the design of the RFID antenna 31 is further optimized. The number of the extension parts 312 is 2, and each extension part 312 has at least one bending structure 3121, which is arranged close to the side edge of the bottom plate 1. The bending structure 3121 of the extension part 312 can optimize the directionality of the electromagnetic field, enabling the antenna 31 to have a strong signal receiving ability at multiple angles. This is very beneficial for application scenarios that require multi-directional reading, reducing signal dead zones and weak areas. The number of the extension parts 312 is 2, and they are arranged close to the side edge of the bottom plate 1, which can expand the coverage area and signal transmission intensity of the RFID antenna 31, improving the reliability and reading range of the signal.

[0058] There are also some preferred embodiments with an optimized design of the extension part 313. The area of the extension part 313 of the antenna is larger than that of the extension part 312, and its shape is optimized to adapt to the design of the bottom plate of the table tennis racket. The design of the extension part 313 increases the effective radiation area of the antenna 31, reducing the loss of RFID signals during transmission and making the energy utilization rate higher. The shape of the extension part 313 can be customized according to the actual shape of the bottom plate to maximize the coverage area and signal strength. Since the extension part 313 increases the effective area for signal transmission and reception, the power required for the RFID tag to work is reduced. This is particularly important for passive RFID systems, which can extend the service life and effective working time of the device.

[0059] In some other preferred embodiments, the design of the RFID antenna supports multi-band operation. By adjusting the shapes and lengths of the extension part 312 and the extension part 313, optimization of signals with different frequencies is achieved. The multi-band antenna design allows the RFID system to switch between different frequency bands in different environments, such as using the high-frequency band for close-range high-precision identification and the low-frequency band for long-range wide-coverage scanning. This design enhances the adaptability and flexibility of the RFID system. The multi-band design can also effectively reduce signal interference between different frequency bands. Through frequency band selection and optimization, the clarity and stability of the signal are ensured.

[0060] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structural or equivalent process substitutions or modifications based on the substantial concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. An automatically recognizable table tennis racket, characterized in that, The table tennis racket includes a bottom plate (1) and a handle (2) connected thereto. The bottom plate (1) includes at least one wood layer (11) and at least one composite material layer (12) that are joined to each other. Among them, an RFID layer (3) is provided on the bottom plate. The RFID layer (3) includes an antenna (31) and a chip (32), and the antenna (31) is electrically connected to the chip (32).

2. The table tennis racket according to claim 1, characterized in that, The RFID layer (3) is provided on the wood layer (11).

3. The table tennis racket according to claim 2, characterized in that, A first limiting groove (111) is provided on the wood layer (11). The depth and shape of the first limiting groove (111) are adapted to the RFID layer (3), and the RFID layer (3) is fixed in the first limiting groove (111).

4. The table tennis racket according to claim 1, characterized in that, The RFID layer (3) is provided on the composite material layer (12).

5. The table tennis racket according to claim 4, characterized in that, A second limiting groove (121) is provided on the composite material layer (12). The depth and shape of the second limiting groove (121) are adapted to the RFID layer (3), and the RFID layer (3) is fixed in the second limiting groove (121).

6. The table tennis racket according to claim 1, characterized in that, The chip (32) is provided at a position on the bottom plate (1) close to the handle (2), and the antennas (31) are symmetrically arranged on both sides of the chip (32).

7. The table tennis racket according to claim 6, characterized in that, The antenna (31) includes a joining portion (311), an extending portion (312), and an expanding portion (313). The joining portion (311) is connected to the chip (32), and at least one extending portion (312) extends from the joining portion (311). The expanding portion (313) is connected to the extending portion (312), and the area of the expanding portion (313) is larger than that of the extending portion (312).

8. The table tennis racket according to claim 7, characterized in that, The extending portion (312) has at least one bending structure (3121).

9. The table tennis racket according to claim 7 or 8, characterized in that, The number of the extending portions (312) is 2, and they are arranged at positions close to the side edges of the bottom plate (1).

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