Non-contact slip ring arrangement based on a series-fed antenna

Abstract

The utility model provides a non -contact type slip ring device based on series feed antenna, be equipped with at least one transmitting module on the first circuit board of first slip ring subassembly, its series feed antenna is arranged on the board surface of first circuit board and presents an arc or a ring shape, be equipped with at least one receiving module on the second circuit board of second slip ring subassembly, when the series feed antenna of transmitting module on first circuit board is arranged and presents an arc, the series feed antenna of at least one receiving module is arranged on second circuit board and presents a ring shape, when the series feed antenna of transmitting module on first circuit board is arranged and presents a ring shape, the series feed antenna of at least one receiving module is arranged on second circuit board and presents an arc or a ring shape, and the series feed antenna of transmitting module on first circuit board corresponds with the series feed antenna of receiving module on second circuit board, the utility model discloses can realize 360 degree non -polarity rotation and signal wireless high -speed transmission of slip ring with more simple configuration.

Description

Technical Field

[0001] This utility model relates to the field of slip ring technology, specifically to a non-contact slip ring device based on a series-fed antenna. Background Technology

[0002] Most existing slip ring structures are contact-type. Contact-type slip ring structures have the following significant drawbacks:

[0003] 1. Friction and wear: The mechanical contact between the brush and the slip ring leads to continuous wear, resulting in increased contact resistance and unstable signal transmission;

[0004] 2. Short lifespan and high maintenance costs: Wear and tear is irreversible, requiring frequent replacement of parts and maintenance, resulting in high maintenance costs;

[0005] 3. Operating noise: Noise generated by friction affects the equipment's quietness performance;

[0006] 4. Speed ​​limitation: Wear is accelerated under high-speed operating conditions, which limits its application range;

[0007] 5. Poor environmental adaptability: Dust, oil, and moisture can easily penetrate, leading to corrosion of the contact surface, signal interruption, or even cable burnout.

[0008] The emergence of wireless non-contact slip ring structure can specifically solve the above-mentioned defects, completely eliminate the physical friction between brush and slip ring, achieve zero wear and theoretical unlimited life; at the same time, it eliminates the need for regular maintenance, significantly reducing long-term costs; and the frictionless characteristics result in extremely low operating noise; in addition, it has stronger robustness to harsh environments such as dust, humidity, and vibration, effectively avoiding the signal interruption or component damage problems caused by contamination of traditional contact slip rings. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a non-contact slip ring device based on a series-fed antenna, which can realize 360-degree non-polar rotation of the slip ring and high-speed wireless signal transmission with a more streamlined configuration.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0011] A non-contact slip ring device based on a series-fed antenna includes: a first circuit board disposed on a first slip ring assembly, a second circuit board disposed on a second slip ring assembly, and a wireless communication component; the wireless communication component includes a transmitting module and a receiving module; the transmitting module includes a series-fed antenna and a transmitting unit connected thereto; the receiving module includes a series-fed antenna and a receiving unit connected thereto.

[0012] The first circuit board has at least one transmitting module, and the series-fed antennas of the at least one transmitting module are arranged in an arc or a ring on the surface of the first circuit board; the second circuit board has at least one receiving module; when the series-fed antennas of the transmitting module on the first circuit board are arranged in an arc, the series-fed antennas of the at least one receiving module are arranged in a ring on the second circuit board; when the series-fed antennas of the transmitting module on the first circuit board are arranged in a ring, the series-fed antennas of the at least one receiving module are arranged in an arc or a ring on the second circuit board; the series-fed antennas of the transmitting module on the first circuit board correspond to the series-fed antennas of the receiving module on the second circuit board.

[0013] Optionally, the series-fed antennas of one or more transmitting modules are arranged in an arc along the circumference on the first circuit board; the series-fed antennas of one or more receiving modules are arranged in a ring along the circumference on the second circuit board; the ring corresponds to the arc.

[0014] Optionally, the series-fed antennas of one or more transmitting modules are arranged in a ring along the circumference on the first circuit board; the series-fed antennas of one or more receiving modules are arranged in an arc along the circumference on the second circuit board; the ring corresponds to the arc.

[0015] Optionally, the series-fed antennas of one or more transmitting modules are arranged in a ring along the circumference on the first circuit board; the series-fed antennas of one or more receiving modules are arranged in a ring along the circumference on the second circuit board; the ring on the first circuit board corresponds to the ring on the second circuit board.

[0016] Optionally, the wireless communication component is a full-duplex wireless communication component, including at least two transmitting modules and at least two receiving modules;

[0017] The first circuit board is also provided with at least one receiving module, and the series-fed antenna of the at least one receiving module is arranged in an arc or a ring on the surface of the first circuit board; the series-fed antenna of the transmitting module on the first circuit board and the series-fed antenna of the receiving module on the first circuit board are nested in a non-contact relationship.

[0018] The second circuit board is also provided with at least one transmitting module. When the series-fed antenna of the receiving module on the first circuit board is arranged in an arc shape, the series-fed antenna of the at least one transmitting module is arranged in a ring shape on the second circuit board; when the series-fed antenna of the receiving module on the first circuit board is arranged in a ring shape, the series-fed antenna of the at least one transmitting module is arranged in an arc shape or a ring shape on the second circuit board; the series-fed antenna of the transmitting module on the second circuit board and the series-fed antenna of the receiving module on it are in a non-contact nested relationship.

[0019] The transmitting module on the first circuit board is configured to correspond to the receiving module on the second circuit board; the receiving module on the first circuit board is configured to correspond to the transmitting module on the second circuit board.

[0020] Optionally, the series-fed antenna can be either series-fed or parallel-fed.

[0021] A series-fed antenna with parallel feeding is composed of at least two feed microstrip lines connected in parallel, and two or more antenna elements are connected in series on one feed microstrip line; the at least two feed microstrip lines are arranged in parallel.

[0022] Optionally, the series-fed antenna is fed in parallel mode;

[0023] A series-fed antenna with parallel feeding is composed of two feed microstrip lines connected in parallel, and two or more antenna elements are connected in series on one feed microstrip line; the two feed microstrip lines are arranged in an arc or a ring.

[0024] Optionally, in a series-fed antenna, 1-20 antenna elements are connected in series on the feeding microstrip line.

[0025] Optionally, the first circuit board is provided with a transmitting module and a receiving module; the second circuit board is provided with a transmitting module and a receiving module.

[0026] The series-fed antennas of both the transmitting module and the receiving module are fed in parallel, and their two feed microstrip lines are arranged in a circular ring.

[0027] On the first circuit board, the series-fed antenna of the transmitting module and the series-fed antenna of the receiving module are in a non-overlapping inner-outer ring relationship; on the second circuit board, the series-fed antenna of the transmitting module and the series-fed antenna of the receiving module are in a non-overlapping inner-outer ring relationship.

[0028] Optionally, the first circuit board has 4-8 transmitting modules, and the series-fed antennas of the 4-8 transmitting modules are arranged in a ring on the surface of the first circuit board; the second circuit board has 4-8 receiving modules, and the series-fed antennas of the 4-8 receiving modules are arranged in a ring on the surface of the second circuit board.

[0029] The beneficial effects of this invention are as follows: The non-contact slip ring device based on a series-fed antenna provided by this invention can achieve high-speed, high-stability, and low-cost wireless data transmission between the first slip ring assembly and the second slip ring assembly, greatly improving the lifespan of the slip ring, providing stronger robustness, and reducing maintenance costs. In particular, compared to other wireless slip ring solutions that rely on redundant architectures with multiple sets of transmit / receive modules, this invention achieves a breakthrough by requiring only a minimally simplistic configuration with a minimum of only one pair of wireless transceiver modules to achieve ideal wireless slip ring performance, significantly reducing system complexity. Furthermore, this invention can also achieve 360-degree non-polar continuous rotation of the slip ring, greatly expanding the application scenarios of the slip ring device and making many applications requiring infinite rotation possible. In addition, the non-contact slip ring device of this invention can also achieve a bidirectional transmission duplex working mode, further expanding the application scenarios of the slip ring device. Attached Figure Description

[0030] Figure 1 A schematic diagram of an exemplary overall structure of a non-contact slip ring device based on a series-fed antenna provided in an embodiment of this utility model;

[0031] Figure 2a A schematic diagram of a series-fed antenna structure with series feeding method provided for a specific embodiment of this utility model;

[0032] Figure 2b A schematic diagram of a series-fed antenna structure with parallel feeding method provided for a specific embodiment of this utility model;

[0033] Figure 3a -d are schematic diagrams of four exemplary layout designs of series-fed antennas on the circuit board in the embodiments of this utility model;

[0034] Figure 4a -c are three exemplary simplified structural diagrams of the non-contact slip ring device based on a series-fed antenna provided in the embodiments of this utility model;

[0035] Figure 5 This is a graph showing the relationship between the rotation angle and the signal reception amplitude when the wireless slip ring function is implemented using a 1TX 4RX configuration in this embodiment of the present invention.

[0036] Figure 6A schematic diagram of an exemplary structure of a feed antenna in a non-contact slip ring device supporting duplex mode provided in an embodiment of this utility model;

[0037] Figure 7a -c is a simplified structural diagram of three exemplary 2RX and 2TX structures of a non-contact slip ring device supporting duplex mode provided in this embodiment of the present invention;

[0038] Figure 8 To adopt Figure 7c Experimental simulation data of signal transmission and reception performance of non-contact slip ring device in structural form.

[0039] Label Explanation:

[0040] 1A. First slip ring assembly; 2B. Second slip ring assembly;

[0041] A. First circuit board; B. Second circuit board; C. Wireless communication component;

[0042] 3. Series-fed antenna; T, transmitting unit; R, receiving unit. Detailed Implementation

[0043] To explain in detail the technical principles, implementable specific solutions, possible application scenarios, and achievable objectives and effects of this utility model, exemplary embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. It should be understood that the embodiments described herein and the embodiments shown in the accompanying drawings are only used to more clearly illustrate the technical solutions of this utility model, and are therefore only examples intended to explain this utility model, and should not be construed as limiting this utility model. It should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0044] This invention requires only a minimum of one pair of wireless transceiver modules to achieve ideal performance wireless slip ring functionality, significantly reducing system complexity; and it supports 360-degree non-polar continuous rotation of the slip ring, greatly expanding the slip ring's functionality and application range.

[0045] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0046] Please see Figure 1 , Figure 2a -b and Figures 3a-3b .

[0047] This utility model provides a non-contact slip ring device based on a series-fed antenna, comprising: a first circuit board disposed on a first slip ring assembly, a second circuit board disposed on a second slip ring assembly, and a wireless communication component.

[0048] The first slip ring assembly and the second slip ring assembly are coaxially aligned and can rotate synchronously or asynchronously along the axial direction. An exemplary basic slip ring structure is as follows: Figure 1 As shown. In this embodiment, one of the first slip ring assembly 1A and the second slip ring assembly 2B can be set as a fixed component, and the other as a rotating component, without specific limitations. Depending on the specific requirements of different application scenarios, in some specific embodiments, both of the above components can also be designed as rotating components, and the same synchronous or asynchronous rotation method can be adopted.

[0049] The first and second circuit boards typically employ a disc / ring structure design adapted to the slip ring assembly structure. However, depending on the specific application requirements, other structural designs are also possible, such as hollow / non-hollow polygonal structures. It can be understood that the first circuit board on the first slip ring assembly and the second circuit board on the second slip ring assembly are coaxially aligned. In this embodiment, using the wireless communication components on the first and second circuit boards, axial face-to-face wireless transmission (referred to as axial face-to-face transmission) can be achieved between the first and second slip ring assemblies.

[0050] The wireless communication components include a transmitting module TX and a receiving module RX; each transmitting module TX includes a series-fed antenna and a transmitting unit connected to the series-fed antenna (represented by "T" in all the figures involved); each receiving module RX includes a series-fed antenna and a receiving unit connected to the series-fed antenna (represented by "R" in all the figures involved).

[0051] The series-fed antenna, also known as a series-fed microstrip antenna, refers to an antenna system in which two or more radiating antenna elements (rectangular microstrip patch antennas, comb patch antennas, etc.) are connected in series and fed through a feed microstrip line. The signal is transmitted to each radiating antenna element via the feed network (transmitting or receiving unit) through the feed microstrip line, forming directional radiation. The feeding methods for series-fed antennas are mainly divided into parallel feeding and series feeding; such as... Figure 2a The illustrated series-fed antenna has a feed network that connects multiple radiating elements in series; that is, the feed network is connected in series with a feed microstrip line. Figure 2b The image shows a series-fed antenna using parallel feeding. Its series-fed network typically employs a T-shaped branch structure, with two or more feed microstrip lines connected to the series-fed network in parallel. Among these, Figure 2a The diagram shows a series-fed antenna structure with 8 series and 0 parallel feeds. Figure 2bThe diagram shows a series-fed antenna structure with a parallel feeding method of 4 series and 1 parallel. In fact, the series-fed antenna in this embodiment can be summarized as a structure of M series and N parallel (M≥1, N≥0).

[0052] In this embodiment, the first circuit board of the first slip ring assembly is provided with at least one transmitting module; the second circuit board of the second slip ring assembly is provided with at least one receiving module; the transmitting module on the first circuit board and the receiving module on the second circuit board are correspondingly arranged to realize wireless communication transmission between the two slip ring assemblies. Specifically, the series-fed antennas of the at least one transmitting module on the first circuit board are arranged in an arc or a ring on the surface of the first circuit board; the series-fed antennas of the at least one receiving module on the second circuit board are arranged in an arc or a ring on the surface of the second circuit board. It can be understood that the aforementioned corresponding arrangement of the transmitting and receiving modules actually refers to the corresponding arrangement of the series-fed antennas of the transmitting and receiving modules.

[0053] Optionally, the arc can be a circular arc or an elliptical arc; the ring can be a circular ring, an elliptical ring, or a polygonal ring, such as a triangular ring, a quadrilateral ring, or a hexagonal ring.

[0054] Preferably, the arc is a circular arc; the ring is a circular ring. Four exemplary layout designs for series-fed antennas on a circuit board are as follows: Figure 3a As shown in -d, where, Figure 3a and Figure 3d This illustrates a layout design where the series-fed antenna has an arc shape. Figure 3b and Figure 3c The diagram shows a circular layout design for the series-fed antenna.

[0055] Preferably, both the first and second circuit boards are designed in a circular or disk shape, and the series-fed antennas of the transmitting / receiving module are arranged in an arc shape or a ring around the circumference of the corresponding circuit board.

[0056] In particular, to ensure the continuity of signal transmission and reception, the series-fed antenna of the transmitting module on the first circuit board and the series-fed antenna of the receiving module on the second circuit board need to follow the following matching layout design requirements:

[0057] (1) When the series-fed antennas of the transmitting module on the first circuit board are arranged in an arc shape, the series-fed antennas of the receiving module on the second circuit board are arranged in a ring shape on the second circuit board, and the arc shape corresponds to the ring shape; an exemplary layout design is as follows: Figure 4a As shown.

[0058] (2) When the series-fed antennas of the transmitting module on the first circuit board are arranged in a ring, the series-fed antennas of the receiving module on the second circuit board are arranged in an arc or a ring on the second circuit board; the ring on the first circuit board corresponds to the arc or ring on the second circuit board. An exemplary layout design is as follows: Figure 4b and 4c As shown.

[0059] The corresponding settings mentioned above, combined with Figure 4a -c can be understood as follows: during the rotation of the slip ring device, if projected along the common axis of the slip ring assembly, the series-fed antennas of the transmitting module on the first circuit board and the series-fed antennas of the receiving module on the second circuit board will always have an "overlapping" portion in the projection plane. This overlapping portion is the signal radiation overlap area between the transmitting module on the first circuit board and the receiving module on the second circuit board. This ensures that signal transmission and reception between the transmitting module on the first circuit board and the receiving module on the second circuit board will not be interrupted.

[0060] Based on the above matching layout design, regardless of whether the first and second slip ring assemblies, arranged coaxially, adopt unidirectional rotation, bidirectional rotation, or dynamic rotation at any angle, uninterrupted signal transmission can be achieved between the transmitting module on the first circuit board and the receiving module on the second circuit board. This ensures the stability and continuity of signal transmission during the rotation of the slip ring device, thereby meeting the stringent requirements of high-precision equipment for real-time communication and improving the practicality of the non-contact slip ring device.

[0061] It is worth noting that the non-contact slip ring device provided in this embodiment, based on the above-described matching layout design, enables the first slip ring assembly and / or the second slip ring assembly to achieve 360-degree non-polar rotation; furthermore, the signal transmission between the two during rotation still maintains high speed, high stability, and continuity. This greatly expands the functionality and application scenarios of the slip ring device in this embodiment, making it possible to realize many applications requiring infinite rotation functionality.

[0062] For example, the slip ring device can achieve 360-degree non-polar rotation in several specific implementations:

[0063] 1. The first slip ring assembly serves as a fixed component, and the second slip ring assembly serves as a rotating component, with the distance between them being greater than the distance of the major axis of the second slip ring assembly; the second slip ring assembly can rotate around a point located on its common axis without limitation on angle and direction;

[0064] 2. The second slip ring assembly serves as a fixed component, and the first slip ring assembly serves as a rotating component. The distance between the two is greater than the distance of the major axis of the first slip ring assembly. The first slip ring assembly can rotate around a point located on its common axis without limitation in angle or direction.

[0065] 3. Both the first slip ring assembly and the second slip ring assembly are rotating components; the first slip ring assembly and the second slip ring assembly can rotate synchronously around their respective points located on a common axis without any limit on the rotation angle (during the rotation, the distance between the two remains unchanged).

[0066] Below, in conjunction with Figure 3a The following three specific implementation methods will be used to explain the three specific feasible matching layout designs of the series-fed antennas of the transmitting module on the first circuit board and the receiving module on the second circuit board.

[0067] In the first specific embodiment, a first circuit board has one or more transmitting modules, and the series-fed antennas of all the transmitting modules are arranged in a circular arc (or elliptical arc) along the circumference of the first circuit board surface; correspondingly, a second circuit board has one or more receiving modules, and the series-fed antennas of all the receiving modules are arranged in a circular ring (or elliptical ring) along the circumference of the second circuit board surface; the "circular arc" (or elliptical arc) of the first circuit board is set to correspond to the "circular ring" (or elliptical ring) on ​​the second circuit board.

[0068] In the second specific embodiment, the first circuit board has one or more transmitting modules, and the series-fed antennas of all the transmitting modules are arranged in a circular ring (or elliptical ring) along the circumference of the first circuit board surface; correspondingly, the second circuit board has one or more receiving modules, and the series-fed antennas of all the receiving modules are arranged in a circular arc (or elliptical arc) along the circumference of the second circuit board surface; the "circular ring" (or elliptical ring) of the first circuit board is set in a corresponding manner to the "circular arc" (or elliptical arc) on the second circuit board.

[0069] In the third specific embodiment, the first circuit board has one or more transmitting modules, and the series-fed antennas of all the transmitting modules are arranged in a circular ring (or elliptical ring) on ​​the surface of the first circuit board; correspondingly, the second circuit board has one or more receiving modules, and the series-fed antennas of all the receiving modules are arranged in a circular ring (or elliptical ring) on ​​the surface of the second circuit board; the "circular ring" (or elliptical ring) on ​​the first circuit board is set in a corresponding manner to the "circular ring" (or elliptical ring) on ​​the second circuit board.

[0070] As described above, the non-contact slip ring device provided in this embodiment offers highly customizable features in terms of module quantity configuration and feeder antenna matching layout design for its transmitting module on the first slip ring assembly and receiving module on the second slip ring assembly, providing diverse options. This wireless communication component design architecture for slip ring devices, through flexible module combinations and antenna array spatial arrangement schemes, can better and more accurately adapt to the differentiated needs of diverse scenarios such as industrial automation, medical equipment, and aerospace.

[0071] Please see Figure 4a -c, Figure 4a -c are three exemplary simplified structural diagrams of the non-contact slip ring device based on a series-fed antenna provided in the embodiments of this utility model.

[0072] Based on the previous embodiment, this utility model provides a simplified configuration of a non-contact slip ring device based on a series-fed antenna. It only requires a pair of wireless transceiver modules (referred to as 1RX 1TX) to achieve the ideal performance of the wireless slip ring function, significantly reducing system complexity.

[0073] The non-contact slip ring device of this embodiment, such as Figure 4a As shown in -c, only one transmitting module is provided on the first circuit board of the first slip ring assembly; only one receiving module is provided on the second circuit board of the second slip ring assembly; the transmitting module includes a transmitting unit T and a series-fed antenna connected thereto; the receiving module includes a receiving unit R and a series-fed antenna connected thereto.

[0074] In this embodiment, the series-fed antennas of a transmitting module are arranged in an arc or a ring on the surface of the first circuit board; the series-fed antennas of a receiving module are arranged in an arc or a ring on the surface of the second circuit board; the series-fed antennas of the transmitting module and the series-fed antennas of the receiving module are arranged correspondingly.

[0075] It is understandable that, in order to ensure the continuity of signal transmission and reception, the series-fed antennas of the transmitting module on the first circuit board and the receiving module on the second circuit board also need to follow the matching layout design requirements described in the previous embodiment. This will not be repeated here; please refer to the description in the previous embodiment for details.

[0076] Below, in conjunction with Figure 4a The -c approach is used to understand the three specific implementation methods, which will be used to explain in detail the three specific feasibility matching layout designs of the series-fed antenna of a transmitting module on the first circuit board and a receiving module on the second circuit board.

[0077] In the first specific implementation, such as Figure 4aAs shown, a circular arc (or elliptical arc) is arranged along the circumference on the surface of the first circuit board A through a chain-type series-fed antenna of a transmitting module; correspondingly, a circular ring (or elliptical ring) is arranged along the circumference on the surface of the second circuit board B through a chain-type series-fed antenna of a receiving module; similarly, the "circular arc" (or elliptical arc) on the first circuit board A and the "circular ring" (or elliptical ring) on ​​the second circuit board B are set to correspond to each other.

[0078] In the second specific implementation, such as Figure 4b As shown, a circular ring (or elliptical ring) is arranged along the circumference on the surface of the first circuit board A through a chain-type series-fed antenna of a transmitting module; correspondingly, a circular arc (or elliptical arc) is arranged along the circumference on the surface of the second circuit board B through a chain-type series-fed antenna of a receiving module; similarly, the "circular ring" (or elliptical ring) on ​​the first circuit board A is set to correspond with the "circular arc" (or elliptical arc) on the second circuit board B.

[0079] In the third specific implementation, such as Figure 4c As shown, a circular ring (or elliptical ring) is arranged along the circumference on the surface of the first circuit board A through a chain-type series-fed antenna of a transmitting module; correspondingly, a circular ring (or elliptical ring) is arranged along the circumference on the surface of the second circuit board B through a chain-type series-fed antenna of a receiving module; the "circular ring" (or elliptical ring) on ​​the first circuit board A and the "circular ring" (or elliptical ring) on ​​the second circuit board B are arranged correspondingly.

[0080] It is understood that, in the above specific embodiments, the number of radiating elements in the series-fed antenna, and / or the spacing between the radiating elements, and / or the radiation range of each radiating element, and / or the chain length, can be flexibly configured according to their graphic layout requirements on the circuit board. This will not be described in detail here.

[0081] As can be seen from the above, this embodiment makes full use of the chain-type antenna element array of the series-fed antenna, which supports flexible adjustment and design. In the slip ring device, only one transmitting module and one receiving module are required at a minimum. By making a specific arrangement design for its series-fed antenna, the wireless slip ring function of signal continuity, high speed and high stability transmission can be realized.

[0082] Unlike 1TX+1RX, 1TX+1RX, or 1TX+1RX configurations that require the use of OR gates in the corresponding transmit / receive units for multi-signal processing, which limits the transmission rate, this embodiment provides a simplified 1RX+1TX configuration design. While ensuring the wireless slip ring function, it saves on chips and OR gates, significantly reducing system complexity, power consumption, and cost; and simultaneously improves the wireless signal transmission rate.

[0083] In addition, although this embodiment is the simplest configuration design, it can still achieve the 360-degree non-polar rotation function described in the previous embodiment, and has broad application prospects.

[0084] Please see Figure 3a -d and Figure 5 The embodiments of this utility model are based on the first embodiment. In view of the difference in the composition of the wireless communication components, in addition to the extremely simple configuration of only one pair of wireless transceiver modules as described in the previous embodiment, a variety of configuration schemes can be further extended.

[0085] The following will describe in detail several other feasible configuration schemes for the number of transceiver modules when the wireless communication component is used to realize the wireless transmission channel from the first circuit board to the second circuit board, through the following specific implementation methods.

[0086] It is worth noting that the following scheme also needs to follow the requirements of the matching layout design of the series-fed antennas of the transmitting module on the first circuit board and the receiving module on the second circuit board in order to ensure the continuity of signal transmission and reception in the first embodiment.

[0087] In some specific implementations, a 1TX multi-RX configuration scheme is used to construct a wireless transmission channel from the first circuit board to the second circuit board. Specifically, the first circuit board of the first slip ring assembly has one transmitting module (TX); the second circuit board of the second slip ring assembly has two or more receiving modules (RX).

[0088] In this circuit board A, the series-fed antennas of a transmitting module TX are arranged in an arc or a ring on the surface of the circuit board A, as exemplified by the following layout design: Figure 3a and Figure 3b As shown. On the second circuit board B, all the series-fed antennas of two or more receiving modules RX are arranged in an arc or a ring on the surface of the second circuit board B. An exemplary layout design is as follows. Figure 3c and Figure 3d As shown.

[0089] In other corresponding embodiments, a multi-TX 1RX configuration is used to construct a wireless transmission channel from the first circuit board to the second circuit board. Specifically, the first circuit board of the first slip ring assembly has two or more transmitting modules (TX); the second circuit board of the second slip ring assembly has one receiving module (RX).

[0090] On the first circuit board A, all the series-fed antennas of two or more transmitting modules TX are arranged in an arc or a ring on the surface of the first circuit board A, as exemplified by the following layout design: Figure 3c and Figure 3dAs shown. On the second circuit board B, the series-fed antennas of one receiving module RX are arranged in an arc or a ring on the surface of the second circuit board B, as exemplarily designed as follows. Figure 3a and Figure 3b As shown.

[0091] In some specific embodiments, a multi-TX, multi-RX configuration scheme is used to construct the wireless transmission channel from the first circuit board to the second circuit board. Specifically, the first circuit board of the first slip ring assembly is provided with two or more transmitting modules (TX); the second circuit board of the second slip ring assembly is provided with two or more receiving modules (RX).

[0092] In this design, on the first circuit board A, series-fed antennas from two or more transmitting modules TX are arranged in an arc or a ring on the surface of the first circuit board A; on the second circuit board B, series-fed antennas from two or more receiving modules RX are arranged in an arc or a ring on the surface of the second circuit board B. An exemplary layout design is shown below. Figure 3c and Figure 3d As shown.

[0093] In the three specific implementation schemes described above, when configuring multiple RX or multiple TX modules, the number of transmitting TX modules or receiving RX modules can be configured to be 2-10, preferably 4-6. The specific number can be determined based on factors such as the required wireless signal coverage, communication quality, cost, and power consumption of the slip ring device.

[0094] The following will use simulation data of signal transmission and reception performance when implementing wireless slip ring function with a 1TX 4RX configuration scheme to verify the wireless signal transmission performance of the non-contact slip ring device provided in this embodiment of the invention.

[0095] When implementing a wireless slip ring function using a 1TX 4RX configuration, assuming that the first circuit board A is... Figure 3a Arranged in a certain way, the second circuit board B is... Figure 3c The arrangement is as follows. As the rotation angle of the first slip ring assembly changes, the angle of its transmitting module (labeled TX1 here) also changes accordingly; correspondingly, the signal receiving amplitude of the four receiving modules (labeled RX1 to RX4 here) on the second slip ring assembly will also change, and the relationship between the two is as follows: Figure 5 As shown.

[0096] Figure 5In the figure, the X-axis represents the rotation angle of the transmitting module; the Y-axis represents the amplitude of the received signal; S31 in the figure represents the curve of the relationship between the rotation angle of the receiving module RX3 and the transmitting module RX1 and the received amplitude; S41 represents the curve of the relationship between the rotation angle of the receiving module RX4 and the transmitting module RX1 and the received amplitude; S51 represents the curve of the relationship between the rotation angle of the receiving module RX5 and the transmitting module RX1 and the received amplitude; S21 represents the curve of the relationship between the rotation angle of the receiving module RX2 and the transmitting module RX1 and the received amplitude.

[0097] Depend on Figure 5 As can be seen from the S31 curve, when the rotation angle of the transmitting module TX1 is between 30 degrees and 60 degrees, the receiving amplitude of the receiving module RX3 remains at a high level. After that, as the rotation angle increases, the receiving amplitude decreases. When the rotation angle of the transmitting module TX1 is between 330 degrees and 360 degrees, the receiving amplitude of RX3 again remains at a high level.

[0098] Depend on Figure 5 As can be seen from the S41 curve, when the rotation angle of the transmitting module TX1 is between 60 degrees and 150 degrees, the receiving amplitude of the receiving module RX4 remains at a high level. After that, as the rotation angle increases, the receiving amplitude decreases. When the rotation angle of the transmitting module TX1 is between 90 degrees and 150 degrees, the receiving amplitude of RX3 again remains at a high level.

[0099] Depend on Figure 5 As can be seen from the S51 curve, when the rotation angle of the transmitting module TX1 is between 150 degrees and 240 degrees, the receiving amplitude of the receiving module RX5 remains at a high level. After that, as the rotation angle increases, the receiving amplitude decreases. When the rotation angle of the transmitting module RX1 is between 180 degrees and 240 degrees, the receiving amplitude of RX3 again remains at a high level.

[0100] Depend on Figure 5 As can be seen from the S21 curve, when the rotation angle of the transmitting module TX1 is between 240 degrees and 330 degrees, the receiving amplitude of the receiving module RX2 remains at a high level. After that, as the rotation angle increases, the receiving amplitude decreases. When the rotation angle of the transmitting module RX1 is between 270 degrees and 330 degrees, the receiving amplitude of RX3 again remains at a high level.

[0101] Therefore, it can be seen that the wireless slip ring function implemented by the 1TX 4RX configuration scheme, through the optimized series-fed antenna array arrangement design, ensures that the receiver maintains high receiving power throughout the 360-degree rotation range of the slip ring, achieving stable signal coverage without dead zones. Furthermore, it can be concluded that the non-contact slip ring device based on series-fed antennas provided in this embodiment of the invention can achieve high-speed, high-stability, and high-coverage wireless data transmission.

[0102] Please see Figure 4a -c、 Figure 6 as well as Figure 7a -c. This utility model further extends the above embodiments by providing a non-contact slip ring device based on a series-fed antenna that supports bidirectional data transmission.

[0103] In this embodiment, the wireless communication component is a full-duplex wireless communication component, which can be in full-duplex mode or half-duplex mode, specifically including at least two transmitting modules and at least two receiving modules.

[0104] In this embodiment, at least one receiving module is added to the first circuit board. All the series-fed antennas of the newly added receiving module are arranged in an arc or a ring on the surface of the first circuit board. On the first circuit board, the series-fed antennas of the transmitting module and the series-fed antennas of the newly added receiving module are in a non-contact nested relationship, which can be simply understood as an inner and outer ring relationship. An exemplary layout design is as follows: Figure 6 The circuit board is shown on the left side of the screen.

[0105] In this embodiment, at least one transmitting module will be added to the second circuit board. All the series-fed antennas of the newly added receiving module will be arranged in an arc or a ring on the surface of the first circuit board. On the second circuit board, the series-fed antennas of the newly added transmitting module and the series-fed antennas of the receiving module will be nested in a non-contact relationship, which can be simply understood as an inner and outer ring relationship. An exemplary layout design is as follows: Figure 6 The circuit board is shown on the right side of the screen.

[0106] To ensure reliable signal transmission and reception, the transmitting module on the second circuit board is configured to correspond to the receiving module on the first circuit board; similarly, the receiving module on the second circuit board is configured to correspond to the transmitting module on the first circuit board. For example, if the series-fed antenna of the transmitting module is arranged in the inner circle and the series-fed antenna of the receiving module is arranged in the outer circle on the first circuit board, then on the second circuit board, the series-fed antenna of the receiving module will be arranged in the inner circle, and the series-fed antenna of the transmitting module will be arranged in the outer circle.

[0107] To ensure the continuity of signal transmission and reception, the series-fed antenna of the newly added receiving module on the first circuit board and the series-fed antenna of the newly added transmitting module on the second circuit board must also follow the same layout design logic as the matching layout design requirements described in the first embodiment above. That is:

[0108] (3) When the series-fed antennas of the receiving module on the first circuit board are arranged in an arc shape, the series-fed antennas of the transmitting module on the second circuit board are arranged in a ring shape on the second circuit board, and the arc shape corresponds to the ring shape; an exemplary layout design is as follows: Figure 4a As shown.

[0109] (4) When the series-fed antennas of the receiving module on the first circuit board are arranged in a ring, the series-fed antennas of the transmitting module on the second circuit board are arranged in an arc or a ring on the second circuit board; the newly added ring on the first circuit board is correspondingly set to the newly added arc or ring on the second circuit board; an exemplary layout design is as follows: Figure 4b -c is shown.

[0110] The matching layout design described above ensures that the signal can be reliably and uninterruptedly transmitted from the second circuit board to the first circuit board.

[0111] In some specific implementations, with Figure 4a Similarly, the -c implementation can achieve ideal performance in full-duplex mode wireless slip ring function with only two pairs of wireless transceiver modules (referred to as 2RX 2TX), reducing system complexity and cost.

[0112] Specifically, the first circuit board of the first slip ring assembly has only one transmitting module TX1 and one receiving module RX2; the second circuit board of the second slip ring assembly has only one receiving module RX1 and one transmitting module TX2.

[0113] On the first circuit board, the series-fed antennas of a transmitting module TX1 are arranged in an arc or a ring on the board surface; the series-fed antennas of a receiving module RX2 are arranged in an arc or a ring on the board surface; the series-fed antennas of the transmitting module TX1 and the series-fed antennas of the receiving module RX2 are in a non-contact inner and outer ring relationship.

[0114] On the second circuit board, the series-fed antennas of a transmitting module TX2 are arranged in an arc or a ring on the board surface; the series-fed antennas of a receiving module RX1 are arranged in an arc or a ring on the board surface; the series-fed antennas of the transmitting module TX2 and the series-fed antennas of the receiving module RX1 are in an inner-outer ring relationship without contact.

[0115] The exemplary layout design of the above-mentioned 2RX 2TX minimalist structure is as follows: Figure 7a -b is shown, but is not limited to. Among them, Figure 7b The circuit board located on the left side of the screen can be either the first circuit board or the second circuit board, thus it can actually reflect two layout designs.

[0116] It is understandable that the pair of transceiver modules (RX2 TX2) newly added on the first and second circuit boards also need to comply with the following regulations regarding their series-fed antennas. Figure 4aThe -c embodiment addresses the "three specific feasible matching layout designs" required for the original pair of transceiver modules (RX1 TX1). In summary, for the transmitting and receiving modules in a pair of transceiver modules, if one of their series-fed antennas is arranged in an arc (or elliptical arc), the corresponding other module needs to be arranged in a ring (or elliptical ring); or, both their series-fed antennas can be arranged in a ring (or elliptical ring). This ensures that data transmission in both directions is uninterrupted in full-duplex mode, maintaining the continuity and reliability of bidirectional data transmission.

[0117] In some other specific embodiments, this embodiment supports a duplex mode contactless slip ring device, whose wireless communication component can also perform the above-described operation when used to implement a new wireless transmission channel (from the second circuit board to the first circuit board). Figure 4a The embodiments in -c propose several feasible transceiver module quantity configuration schemes for implementing the original wireless transmission channel (from the first circuit board to the second circuit board).

[0118] That is, a new wireless transmission channel from the second circuit board to the first circuit board can be constructed using a 1TX multi-RX configuration, a TX 1RX configuration, or a multi-TX multi-RX configuration. Specific configuration schemes will not be elaborated here; please refer to the preceding descriptions for understanding.

[0119] Similarly, when configuring multiple RX or multiple TX, the number of transmitting modules (TX) or receiving modules (RX) can be configured to be 2-10, preferably 4-6. The specific number can be determined by weighing factors such as the required wireless signal coverage, communication quality, cost, and power consumption for the new wireless transmission channel.

[0120] The wireless communication component in the non-contact slip ring device supporting duplex mode provided in this embodiment will be described in detail below through a preferred embodiment.

[0121] like Figure 6 As shown, the first circuit board has 6 transmitting modules TX and 4 receiving modules RX. All the series-fed antennas of the 6 transmitting modules TX are arranged in an outer ring along the circumference of the first circuit board, and the series-fed antennas of the 4 receiving modules RX are arranged in an inner ring along the circumference of the first circuit board. The second circuit board has 6 receiving modules RX and 4 transmitting modules TX. All the series-fed antennas of the 6 receiving modules RX are arranged in an outer ring along the circumference of the second circuit board, and the series-fed antennas of the 4 transmitting modules TX are arranged in an inner ring along the circumference of the second circuit board. At the same time, the "outer ring" on the first circuit board corresponds to the "outer ring" on the second circuit board, and the "inner ring" on the first circuit board corresponds to the "inner ring" on the second circuit board.

[0122] The aforementioned layout design of the wireless communication components on the first and second circuit boards enables a wireless transmission channel from the first circuit board to the second circuit board in the "outer ring position" and a wireless transmission channel from the second circuit board to the second circuit board in the "inner ring position." It can be understood that the overall layout design of the receiving and transmitting modules on the first circuit board can be interchanged with the overall layout design of the receiving and transmitting modules on the second circuit board, thus achieving bidirectional data transmission for the non-contact slip ring device.

[0123] Please see Figure 3a -d、 Figure 7c as well as Figure 8 Based on any of the above embodiments, this utility model provides a detailed description of the differences in the layout design on the circuit board for the two feeding methods of series-fed antennas.

[0124] When implementing a non-contact slip ring device using a series-fed antenna, each transmitting module / receiving module's series-fed antenna contains only one feed microstrip line, to which multiple radiating antenna elements, such as 1-20, are connected in series. The feed microstrip line of each series-fed antenna is linearly arranged in the same direction on the first / second circuit board, forming a single-row linear structure. An exemplary layout design is shown below. Figure 3a -d is shown.

[0125] When implementing a non-contact slip ring device using a series-fed antenna with parallel feeding, the series-fed antenna of one transmitting module / one receiving module consists of at least two feed microstrip lines connected in parallel, and multiple radiating antenna elements are connected in series on each feed microstrip line; the length of each feed microstrip line can be the same or different, depending on the number of radiating antenna elements or the spacing between the radiating antenna elements; the multiple feed microstrip lines of each series-fed antenna are arranged in parallel along the same direction on the first circuit board / second circuit board to form a multi-column parallel structure.

[0126] Specifically, when the series-fed antenna of a transmitter module / receiver module consists of only two feed microstrip lines connected in parallel, these two feed microstrip lines can be stretched out and arranged in a single chain form, forming an arc or a ring. An exemplary layout design is shown below. Figure 7c As shown.

[0127] When implementing a non-contact slip ring device using a series-fed antenna with parallel feeding, the feeding method of the series-fed antennas for each transmitting module and each receiving module (hereinafter referred to as each module) supports custom configuration. Simultaneously, the arrangement of the series-fed antennas in each module also supports custom configuration. That is, each module can be arranged linearly in a single column using series feeding, arranged in multiple columns in parallel feeding, or arranged linearly in a single column using parallel feeding. This hybrid layout strategy for series-fed antennas effectively meets the personalized and flexible requirements of antenna layout design on the circuit board.

[0128] The following is a detailed description of a non-contact slip ring device for realizing duplex mode using a series-fed antenna with parallel feeding method, through a preferred embodiment.

[0129] like Figure 7c As shown, the first circuit board A has one transmitting module TX1 and one receiving module RX2. Both modules' series-fed antennas use a parallel feeding method, comprising two parallel-connected feeding microstrip lines. Specifically, the two feeding microstrip lines of the transmitting module TX1 are extended into a single chain, arranged in an outer ring along the circumference of the first circuit board A; similarly, the two feeding microstrip lines of the receiving module RX2 are also extended into a single chain, arranged in an inner ring along the circumference of the first circuit board A. The second circuit board B has one transmitting module TX2 and one receiving module RX1. Its series-fed antenna also uses a parallel feeding method, comprising two parallel-connected feeding microstrip lines. Specifically, the two feeding microstrip lines of the receiving module RX1 are extended into a single chain, arranged in an outer ring along the circumference of the second circuit board B; similarly, the two feeding microstrip lines of the transmitting module TX2 are also extended into a single chain, arranged in an inner ring along the circumference of the second circuit board B. Meanwhile, the outer ring of the transmitting module TX1 on the first circuit board A corresponds to the inner ring of the receiving module RX1 on the second circuit board B; the inner ring of the receiving module RX2 on the first circuit board A corresponds to the inner ring of the transmitting module TX2 on the second circuit board B.

[0130] The experimental simulation data of the signal transmission and reception performance of the above preferred embodiments are as follows: Figure 8 As shown.

[0131] Figure 8In the figure, the X-axis represents the relative rotation angle between the first circuit board on the first slip ring assembly and the second circuit board on the second slip ring assembly; the Y-axis represents the signal receiving power of the receiving module. The solid black curve in the figure represents the received power intensity curve when the receiving module RX2 on the second circuit board receives the signal emitted by the transmitting module TX1 on the first circuit board; the dashed black curve represents the received power intensity curve when the receiving module RX1 on the first circuit board receives the signal emitted by the transmitting module TX2 on the second circuit board.

[0132] Depend on Figure 8 As can be seen, the relative rotation angle between the first circuit board and the second circuit board is within the range of 0-360 degrees. The receiving module RX1 on the first circuit board can always receive the signal emitted by the transmitting module TX2 on the second circuit board, and the receiving module RX2 on the second circuit board can always receive the signal emitted by the transmitting module TX1 on the first circuit board.

[0133] It is also worth noting that on the first or second circuit board, whether the series-fed antenna of a single transmitting module or a single receiving module is arranged in a 360-degree ring on the board surface using a series feeding method, or as mentioned above, the two feed microstrip lines of a series-fed antenna arranged in a 360-degree ring on the board surface using a parallel feeding method (one feed microstrip line is arranged in a 180-degree semicircle); since the feed phase difference between adjacent radiating antenna elements is usually 180 degrees, this phase difference will cause the current direction of adjacent radiating antenna elements to be opposite, thereby producing a current cancellation effect in the radiation field; thus, it has the antenna's omnidirectional radiation function and flexible switching function of directional beam, while also suppressing mutual coupling effect and improving antenna radiation efficiency and scanning accuracy.

[0134] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0135] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0136] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0137] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0138] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0139] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0140] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0141] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A non-contact slip ring device based on a series-fed antenna, characterized in that, include: A first circuit board is disposed on a first slip ring assembly, a second circuit board is disposed on a second slip ring assembly, and a wireless communication component is provided; the wireless communication component includes a transmitting module and a receiving module; the transmitting module includes a series-fed antenna and a transmitting unit connected thereto; the receiving module includes a series-fed antenna and a receiving unit connected thereto. The first circuit board has at least one transmitting module, and the series-fed antennas of the at least one transmitting module are arranged in an arc or a ring on the surface of the first circuit board; the second circuit board has at least one receiving module; when the series-fed antennas of the transmitting module on the first circuit board are arranged in an arc, the series-fed antennas of the at least one receiving module are arranged in a ring on the second circuit board; when the series-fed antennas of the transmitting module on the first circuit board are arranged in a ring, the series-fed antennas of the at least one receiving module are arranged in an arc or a ring on the second circuit board; the series-fed antennas of the transmitting module on the first circuit board correspond to the series-fed antennas of the receiving module on the second circuit board.

2. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, The series-fed antennas of one or more transmitting modules are arranged in an arc along the circumference on the first circuit board; the series-fed antennas of one or more receiving modules are arranged in a ring along the circumference on the second circuit board; the ring corresponds to the arc.

3. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, One or more transmitting modules have their series-fed antennas arranged in a ring along the circumference on the first circuit board; one or more receiving modules have their series-fed antennas arranged in an arc along the circumference on the second circuit board; the ring corresponds to the arc.

4. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, One or more transmitting modules have their series-fed antennas arranged in a ring around the circumference on the first circuit board; one or more receiving modules have their series-fed antennas arranged in a ring around the circumference on the second circuit board; the rings on the first circuit board correspond to the rings on the second circuit board.

5. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, The wireless communication component is a full-duplex wireless communication component, including at least two transmitting modules and at least two receiving modules; The first circuit board is also provided with at least one receiving module, and the series-fed antenna of the at least one receiving module is arranged in an arc or a ring on the surface of the first circuit board; the series-fed antenna of the transmitting module on the first circuit board and the series-fed antenna of the receiving module on the first circuit board are nested in a non-contact relationship. The second circuit board is also provided with at least one transmitting module. When the series-fed antenna of the receiving module on the first circuit board is arranged in an arc shape, the series-fed antenna of the at least one transmitting module is arranged in a ring shape on the second circuit board; when the series-fed antenna of the receiving module on the first circuit board is arranged in a ring shape, the series-fed antenna of the at least one transmitting module is arranged in an arc shape or a ring shape on the second circuit board; the series-fed antenna of the transmitting module on the second circuit board and the series-fed antenna of the receiving module on it are in a non-contact nested relationship. The transmitting module on the first circuit board is configured to correspond to the receiving module on the second circuit board; the receiving module on the first circuit board is configured to correspond to the transmitting module on the second circuit board.

6. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, The series-fed antenna can be either series-fed or parallel-fed. A series-fed antenna with parallel feeding is composed of at least two feed microstrip lines connected in parallel, and two or more antenna elements are connected in series on one feed microstrip line; the at least two feed microstrip lines are arranged in parallel.

7. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, The series-fed antenna is fed in parallel mode; A series-fed antenna with parallel feeding is composed of two feed microstrip lines connected in parallel, and two or more antenna elements are connected in series on one feed microstrip line; the two feed microstrip lines are arranged in an arc or a ring.

8. The non-contact slip ring device based on a series-fed antenna as described in claim 6 or 7, characterized in that, A series-fed antenna has 1-20 antenna elements connected in series on the feed microstrip line.

9. The non-contact slip ring device based on a series-fed antenna as described in claim 7, characterized in that, The first circuit board has a transmitting module and a receiving module; the second circuit board has a transmitting module and a receiving module. The series-fed antennas of both the transmitting module and the receiving module are fed in parallel, and their two feed microstrip lines are arranged in a circular ring. On the first circuit board, the series-fed antenna of the transmitting module and the series-fed antenna of the receiving module are in a non-overlapping inner-outer ring relationship; on the second circuit board, the series-fed antenna of the transmitting module and the series-fed antenna of the receiving module are in a non-overlapping inner-outer ring relationship.

10. The non-contact slip ring device based on a series-fed antenna as described in claim 1, characterized in that, The first circuit board has 4-8 transmitting modules, and the series-fed antennas of the 4-8 transmitting modules are arranged in a ring on the surface of the first circuit board; the second circuit board has 4-8 receiving modules, and the series-fed antennas of the 4-8 receiving modules are arranged in a ring on the surface of the second circuit board.

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