A hybrid slip ring combining electrical and laser slip rings

Abstract

This utility model discloses a hybrid slip ring combining an electric slip ring and a laser slip ring, relating to the field of slip ring technology. It includes an electric slip ring and a laser slip ring. The laser slip ring comprises a slip ring rotor and a slip ring stator coaxially arranged with the rotor. The electric slip ring is fixedly connected to the rotor. The electric slip ring and the laser slip ring of this utility model are connected to achieve synchronous rotation. During operation, power is transmitted through the electric slip ring, and high-speed signals such as 100Mbps or 1Gbps are transmitted through the laser slip ring. The laser slip ring is a non-contact slip ring, meaning the rotor and stator do not contact each other. High-speed communication is achieved through a laser between them, avoiding signal interference and wear problems associated with contact transmission and ensuring the stability of high-speed signals. Furthermore, because power transmission places lower requirements on the slip ring, the electric slip ring solution is low-cost and technologically mature, and can meet the requirements for stable power transmission, enabling the hybrid slip ring to provide stable power and signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of slip ring technology, specifically to a hybrid slip ring that combines an electric slip ring and a laser slip ring. Background Technology

[0002] In numerous industrial applications involving high-speed data transmission between rotating and stationary components, such as industrial automated production lines, wind power generation equipment, radar systems, and aerospace equipment, achieving stable and efficient high-speed communication between these components is crucial. This not only affects the normal operation of the equipment but also directly impacts the performance, reliability, and efficiency of the entire system. Currently, the industry primarily employs two technical approaches to meet this high-speed communication requirement: electrical slip rings or fiber optic slip rings, supporting various communication protocols such as CANBUS, PROFI BUSDP, 100Mbps Ethernet, and Gigabit Ethernet.

[0003] As a traditional rotary electrical connection device, the slip ring transmits electrical signals through the sliding contact between a brush and a conductive ring. In high-speed communication, slip rings offer advantages such as relatively simple structure and convenient installation, meeting certain communication requirements to some extent. However, with the continuous increase in communication speed requirements, the limitations of slip rings have become increasingly apparent. Because they rely on sliding contact for signal transmission, friction between the brush and the conductive ring during high-speed rotation leads to unstable contact resistance, causing signal attenuation and distortion, resulting in poor stability in high-speed communication. Furthermore, long-term high-speed friction accelerates the wear of the brush and conductive ring, shortening the slip ring's lifespan, increasing equipment maintenance costs and downtime, and affecting the reliability and economy of the entire system.

[0004] Fiber optic slip rings utilize optical fiber as the signal transmission medium to achieve high-speed communication between rotating and stationary components through optical signal transmission. Optical fiber offers significant advantages such as high bandwidth, low transmission loss, and strong resistance to electromagnetic interference, effectively meeting the demands of high-speed communication. However, the application of fiber optic slip rings also faces some challenges. First, the manufacturing cost of fiber optic slip rings is relatively high, primarily due to the precision machining of the optical fiber, the complex internal optical structure design of the slip ring, and the high-precision assembly process. This high cost limits its widespread application in cost-sensitive scenarios. Second, fiber optic slip rings require photoelectric conversion modules at both ends of the transmission line to convert electrical signals into optical signals for transmission, and then convert the optical signals back to electrical signals at the receiving end. This not only increases the complexity and cost of the system but may also introduce additional signal conversion delays and potential points of failure, placing higher demands on the system's reliability and maintainability.

[0005] Therefore, although existing electrical slip ring and fiber optic slip ring technologies have played an important role in realizing high-speed communication between rotating and stationary components, their poor stability, short lifespan, high cost, and system complexity have limited their application in a wider range of fields.

[0006] Therefore, developing a new high-speed communication slip ring technology that can balance stability, lifespan, cost, and system complexity has significant practical implications and application value. Utility Model Content

[0007] The purpose of this invention is to provide a hybrid slip ring that combines electrical and laser slip rings, thereby solving the following technical problems:

[0008] How to improve the stability of high-speed slip ring communication at low cost.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] A hybrid slip ring combining an electric slip ring and a laser slip ring includes an electric slip ring and a laser slip ring. The laser slip ring includes a slip ring rotor and a slip ring stator coaxially arranged with the slip ring rotor. The electric slip ring is fixedly connected to the slip ring rotor.

[0011] In a further embodiment of this utility model: the slip ring rotor includes multiple coaxially arranged circuit boards, which are connected as a whole by pins; the slip ring stator includes multiple circuit boards, and a laser with communication connection is respectively provided on the side of the circuit board of the slip ring rotor that is close to the slip ring stator and the side of the circuit board of the slip ring stator that is close to each other.

[0012] In a further embodiment of this invention, the slip ring rotor comprises three coaxially arranged circuit boards.

[0013] In a further embodiment of this invention, the slip ring stator includes a circuit board.

[0014] In a further embodiment of this utility model: one end of the electric slip ring is fixedly connected to a connecting sleeve one, and the other end is fixedly connected to a connecting sleeve two. A copper sleeve is installed at the center of a circuit board near the electric slip ring in the slip ring rotor, and the copper sleeve is fixedly inserted into the connecting sleeve two.

[0015] In a further embodiment of this utility model: the hybrid slip ring is disposed in a mounting housing, the mounting housing comprising a small-diameter cylindrical housing and a large-diameter cylindrical housing coaxially connected, the electric slip ring and slip ring rotor being disposed in the small-diameter cylindrical housing, and the slip ring stator being disposed in the large-diameter cylindrical housing.

[0016] In a further embodiment of this utility model: the first connecting sleeve and the second connecting sleeve are respectively rotatably mounted in the small-diameter cylindrical shell through bearings, and the first connecting sleeve is located at the end of the small-diameter cylindrical shell away from the large-diameter cylindrical shell.

[0017] In a further embodiment of this invention, the circuit board of the slip ring stator is fixedly installed inside a large-diameter cylindrical housing.

[0018] In a further embodiment of this utility model: a network cable is provided in the central hole of the slip ring, and one end of the network cable passes through a copper sleeve and is connected to a circuit board that connects to the copper sleeve.

[0019] In a further embodiment of this invention, the laser is a BOSA laser with wavelengths of 1550nm / 1310nm, 1490 / 1310nm, 1270 / 1330nm, or 1270 / 1577nm.

[0020] The beneficial effects of this utility model are:

[0021] This invention connects the slip ring rotor in an electric slip ring and a laser slip ring to achieve synchronous rotation. During operation, power is transmitted through the electric slip ring, and high-speed signals such as 100 Mbps or 1 Gbps are transmitted through the laser slip ring. The laser slip ring is a non-contact slip ring, meaning that the slip ring rotor and the slip ring stator do not contact each other. High-speed communication can be achieved through the laser between the two, avoiding signal interference and wear problems of contact transmission and ensuring the stability of high-speed signals. At the same time, because the requirements for slip rings in power transmission are low, the electric slip ring solution is low-cost and technologically mature, and can meet the requirements for stable power transmission, enabling the hybrid slip ring to have stable power and signal transmission. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the hybrid slip ring of the present invention, which combines an electric slip ring and a laser slip ring, according to Embodiment 1.

[0024] Figure 2 This is a side view of the hybrid slip ring of the electric slip ring and the laser slip ring of Embodiment 1 of this utility model;

[0025] Figure 3 This is a cross-sectional perspective view of the hybrid slip ring of the electric slip ring and the laser slip ring of Embodiment 1 of this utility model;

[0026] Figure 4 This is a schematic diagram of the hybrid slip ring of the electric slip ring and the laser slip ring in Embodiment 2 of this utility model;

[0027] Figure 5This is a cross-sectional view of the hybrid slip ring of the electric slip ring and the laser slip ring of Embodiment 2 of this utility model;

[0028] Figure 6 This is a cross-sectional perspective view of the hybrid slip ring of the electric slip ring and the laser slip ring of Embodiment 2 of this utility model.

[0029] In the diagram: 100, electric slip ring; 101, connecting sleeve one; 102, connecting sleeve two; 200, slip ring rotor; 201, copper sleeve; 300, slip ring stator; 400, laser; 501, small diameter cylindrical shell; 502, large diameter cylindrical shell; 600, network cable. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1 This embodiment discloses a hybrid slip ring of electric slip ring and laser slip ring, including an electric slip ring 100 and a laser slip ring. The electric slip ring 100 is located to the left of the laser slip ring. The electric slip ring 100 is prior art, and its specific structure and working principle will not be described in detail. For example, in this embodiment, the electric slip ring 100 used is a cap-shaped slip ring.

[0033] Please see Figure 2 The laser slip ring includes a slip ring rotor 200 and a slip ring stator 300 coaxially arranged with the slip ring rotor 200. The slip ring rotor 200 is located to the left of the slip ring stator 300. The slip ring rotor 200 includes three coaxially arranged circuit boards, which are connected as a whole by pins (pins are not shown in the figure). The three circuit boards are referred to as circuit board 1, circuit board 2, and circuit board 3 from left to right. The slip ring stator 300 includes one circuit board, referred to as circuit board 4. A laser 400 with communication connection is respectively arranged on the side of the circuit board 3 (circuit board 3) of the slip ring rotor 200 and the circuit board 4 (circuit board 4) of the slip ring stator 300. Through laser communication technology, a free space communication link is constructed to realize non-contact high-speed communication.

[0034] It should be noted that the number of circuit boards in the slip ring rotor 200 is not limited to the three in this embodiment, and the number of circuit boards in the slip ring stator 300 is not limited to the one in this embodiment. In other embodiments, the number of circuit boards can be determined to be multiple according to actual application requirements. Meanwhile, the laser 400 is a BOSA laser with a wavelength of 1310nm / 1550nm. In other embodiments, its wavelength can also be 1490 / 1310nm, 1270 / 1330nm, or 1270 / 1577nm.

[0035] Please see Figure 3 The left end of the electric slip ring 100 is fixedly connected to a connecting sleeve 101, and the right end is fixedly connected to a connecting sleeve 202. A copper sleeve 201 is installed at the center of a circuit board (circuit board 1) near the electric slip ring 100 in the slip ring rotor 200. The copper sleeve 201 is fixedly inserted into the connecting sleeve 202, thereby indirectly and fixedly connected to the electric slip ring 100. Therefore, when the electric slip ring 100 rotates, it will drive the slip ring rotor 200 to rotate synchronously.

[0036] A through-hole is formed in the connecting sleeve 101, the slip ring 100, the connecting sleeve 102, and the copper sleeve 200, through which a network cable 600 is installed. The right end of the network cable 600 is connected to the circuit board 1, thereby realizing the conversion between optical signals and network signals.

[0037] The working principle of this embodiment is as follows:

[0038] In this embodiment, the electric slip ring 100 is connected to the slip ring rotor 200 in the laser slip ring to achieve synchronous rotation. During operation, power is transmitted through the electric slip ring 100, and high-speed signals such as 100 Mbps or 1 Gbps are transmitted through the laser slip ring. The laser slip ring is a non-contact slip ring, meaning that the slip ring rotor 200 and the slip ring stator 100 do not contact each other. High-speed communication can be achieved through the laser 400 between them, avoiding signal interference and wear problems of contact transmission and ensuring the stability of high-speed signals. At the same time, because the requirements for the slip ring are low for power transmission, the electric slip ring solution is low in cost and mature in technology, and can meet the requirements for stable power transmission, enabling the hybrid slip ring to have stable power and signal transmission.

[0039] Example 2

[0040] Please see Figure 4 This embodiment discloses a hybrid slip ring that combines an electric slip ring and a laser slip ring. The only difference from Embodiment 1 is that a mounting housing is added, and the hybrid slip ring that combines an electric slip ring and a laser slip ring from Embodiment 1 is placed in the mounting housing.

[0041] Please see Figure 5-6The mounting housing includes a small-diameter cylindrical housing 501 and a large-diameter cylindrical housing 502 coaxially connected. The electric slip ring 100 and the slip ring rotor 200 are disposed in the small-diameter cylindrical housing 501. Specifically, the connecting sleeve 101 and the connecting sleeve 202 are respectively rotatably mounted in the small-diameter cylindrical housing through bearings, and the connecting sleeve 101 is located at the end of the small-diameter cylindrical housing 501 away from the large-diameter cylindrical housing 502.

[0042] The slip ring stator 300 is disposed in the large-diameter cylindrical housing 502. Specifically, the circuit board (circuit board 4) of the slip ring stator 300 is fixedly installed inside the large-diameter cylindrical housing 502.

[0043] This embodiment incorporates a hybrid slip ring, combining the electric slip ring and laser slip ring from Embodiment 1, into the mounting housing. This results in a compact product structure, high space utilization, small size, and significantly reduced manufacturing costs.

[0044] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A hybrid slip ring of an electrical slip ring and a laser slip ring, characterized in that, It includes an electric slip ring (100) and a laser slip ring, wherein the laser slip ring includes a slip ring rotor (200) and a slip ring stator (300) coaxially arranged with the slip ring rotor (200), and the electric slip ring is fixedly connected to the slip ring rotor (200); The slip ring rotor (200) includes multiple coaxially arranged circuit boards, which are connected as a whole by pins; the slip ring stator (300) includes multiple circuit boards, and a laser (400) with communication connection is respectively provided on the side of the slip ring rotor (200) near the slip ring stator (300) and the side of the circuit board in the slip ring stator (300) that is close to each other. One end of the electric slip ring (100) is fixedly connected to a connecting sleeve one (101), and the other end is fixedly connected to a connecting sleeve two (102). A copper sleeve (201) is installed at the center of one side of a circuit board near the electric slip ring (100) in the slip ring rotor (200), and the copper sleeve (201) is fixedly inserted into the connecting sleeve two (102).

2. The hybrid slip ring of electrical slip ring and laser slip ring according to claim 1, characterized in that, The slip ring rotor (200) includes three coaxially arranged circuit boards.

3. The hybrid slip ring of electrical slip ring and laser slip ring according to claim 1, characterized in that, The slip ring stator (300) includes a circuit board.

4. The hybrid electrical and laser slip ring of claim 1, wherein, The hybrid slip ring is disposed in the mounting housing, which includes a small-diameter cylindrical housing (501) and a large-diameter cylindrical housing (502) coaxially connected. The electric slip ring (100) and the slip ring rotor (200) are disposed in the small-diameter cylindrical housing (501), and the slip ring stator (300) is disposed in the large-diameter cylindrical housing (502).

5. The hybrid electrical and laser slip ring of claim 4, wherein, The first connecting sleeve (101) and the second connecting sleeve (102) are respectively rotatably installed in the small-diameter cylindrical shell through bearings, and the first connecting sleeve (101) is located at the end of the small-diameter cylindrical shell (501) away from the large-diameter cylindrical shell (502).

6. The hybrid electrical and laser slip ring of claim 4, wherein, The circuit board of the slip ring stator (300) is fixedly installed inside the large-diameter cylindrical housing (502).

7. The hybrid electrical and laser slip ring of claim 1, wherein, Several network cables (600) are installed in the central hole of the slip ring (100). One end of the network cable (600) is inserted into the copper sleeve (201) and connected to the circuit board that connects the copper sleeve (201).

8. The hybrid electrical and laser slip ring of claim 1, wherein, The laser (400) is a BOSA laser with wavelengths of 1550nm / 1310nm, 1490 / 1310nm, 1270 / 1330nm or 1270 / 1577nm.

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