Non-contact multichannel photoelectric device slip ring

Abstract

The invention discloses a non-contact multi-channel photoelectric device slip ring, and relates to the technical field of slip rings, the non-contact multi-channel photoelectric device slip ring comprises a slip ring stator and a slip ring rotor which are not in contact with each other, and through the specific design of a multi-channel photoelectric device, the multi-channel photoelectric device is set as an outer ring channel and an inner ring channel; the distance between the slip ring stator and the slip ring rotor is determined according to the included angle formed by the light of the laser transmitter, so that the laser receiver can stably receive laser signals, and the inner ring passage and the outer ring passage can be ensured not to interfere with each other; the slip ring stator and the slip ring rotor are not in contact, so that the service life of the slip ring can be prolonged, transmission signal damage caused by abrasion is avoided, and the stability of signal transmission is ensured; the slip ring rotor and the slip ring stator are completely identical in overall structure, so that the production process is simplified, and batch production is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of slip rings, and in particular to a non-contact multi-channel optoelectronic device slip ring. Background Art

[0002] Slip rings are the most widely used of all slip rings, also known as brushes, carbon brushes, collector rings, current collectors, slip rings, swivels, or rotary electrical joints. They are designed to transmit power and signal power during unlimited continuous rotation. Slip rings consist of a stator and a rotor. Wires extend from the stator and rotor, connecting the fixed and rotating structures to the power supply and terminal devices, respectively, and rotate with them.

[0003] The existing electric slip ring is a contact slip ring. Long-term rotational friction will cause wear on the brush and conductive ring surface, generate wear debris, lead to poor contact, noise interference, etc., which will affect high-speed communication and reduce service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-contact multi-channel optoelectronic device slip ring to solve the following technical problems:

[0005] How to improve the service life of electric slip rings and the stability of electrical signals.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A non-contact multi-channel photoelectric device slip ring includes a fixed slip ring stator and a slip ring rotor coaxial with the slip ring stator and rotatably arranged. The slip ring rotor is provided with a multi-channel photoelectric device on one side opposite to the slip ring stator. The multi-channel photoelectric device includes an outer ring path and a first inner ring path provided within the outer ring path.

[0008] The outer ring path includes two groups of laser receivers and n+1 groups of laser transmitters distributed circumferentially. The two groups of laser receivers are symmetrically distributed around the center, and the n+1 groups of laser transmitters are equidistantly arranged. The n groups of laser transmitters are symmetrically distributed between the two groups of laser receivers on the same side, and the one group of laser transmitters is located on the other side of one of the groups of laser receivers. The minimum angle formed between the lasers emitted by two adjacent laser transmitters is a, and the vertical distance between the angle a and the surface of the slip ring rotor is h1.

[0009] The first inner ring path includes a group of laser receivers arranged at the center of the slip ring rotor and m groups of laser transmitters equidistantly arranged outside the laser receivers in the circumferential direction; the minimum angle formed between the laser transmitters on the first inner ring path and the laser transmitters on the outer ring path is b, and the vertical distance between the angle b and the surface of the slip ring rotor is h2;

[0010] The slip ring stator is provided with a multi-channel photoelectric device with the same distribution structure as the slip ring rotor surface on one side of the slip ring stator relative to the slip ring rotor. The distance between the slip ring rotor and the slip ring stator is s, and h1<s<h2.

[0011] In a further embodiment of the present invention: the first inner ring passage is replaced by a second inner ring passage; the distribution type of the second inner ring passage is the same as that of the outer ring passage; in the second inner ring passage, the minimum angle formed between the lasers emitted by two adjacent laser emitters is c, and the vertical distance between the angle c and the surface of the slip ring rotor is h3, s>h1 and s>h3.

[0012] In a further embodiment of the present invention, the slip ring rotor 100 is rotated by an outer ring drive.

[0013] In a further embodiment of the present invention, the slip ring stator is fixedly mounted on the inner wall of the first housing, the slip ring rotor is fixedly mounted on the inner wall of the second housing, and the outer wall of one end of the second housing where the slip ring rotor is mounted is rotatably mounted on one end of the first housing where the slip ring stator is mounted.

[0014] In a further embodiment of the present invention, the outer wall of one end of the housing 2 where the slip ring rotor is mounted is rotatably mounted on one end of the housing 1 where the slip ring stator is mounted via a bearing.

[0015] In a further embodiment of the present invention, the slip ring rotor is driven by a central shaft to achieve rotation.

[0016] In a further embodiment of the present invention, the center of the slip ring rotor is fixedly mounted on the central shaft, and one end of the central shaft is connected to a driving mechanism for driving the central shaft to rotate.

[0017] In a further embodiment of the present invention, the outer loop passage and the first inner loop passage are independent passages that do not interfere with each other.

[0018] In a further embodiment of the present invention, n=4.

[0019] In a further embodiment of the present invention: m=4.

[0020] Beneficial effects of the present invention:

[0021] The non-contact multi-channel photoelectric device slip ring of the present invention has a slip ring stator and a slip ring rotor that do not contact each other. After the design of a specific multi-channel photoelectric device, the multi-channel photoelectric device is set as an outer ring path and an inner ring path (a first inner ring path or a second inner ring path). The distance between the slip ring stator and the slip ring rotor is determined according to the angle formed by the light of the laser transmitter, which ensures that the laser receiver can stably receive the laser signal while ensuring that the inner ring path and the outer ring path do not interfere with each other. Since there is no friction between the slip ring stator and the slip ring rotor, the service life of the pulley can be extended, and at the same time, the damage of the laser signal caused by wear is avoided, thereby ensuring the stability of signal transmission. The overall structure of the slip ring rotor and the slip ring stator are exactly the same, which is conducive to simplifying the production process and facilitating mass production. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 2 is a schematic structural diagram of a non-contact multi-channel optoelectronic device slip ring according to embodiment 1 of the present invention;

[0024] Figure 2 1 is a side view of a non-contact multi-channel optoelectronic device slip ring according to embodiment 1 of the present invention;

[0025] Figure 3 1 is a schematic diagram of the working principle of the outer ring path of the non-contact multi-path optoelectronic device slip ring of Example 1 of the present invention;

[0026] Figure 4 It is a schematic diagram of the installation structure of the slip ring stator and the slip ring rotor in the non-contact multi-channel optoelectronic device slip ring of Example 1 of the present invention.

[0027] In the figure: 100, slip ring rotor; 200, slip ring stator; 300, laser receiver; 400, laser transmitter. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1This embodiment discloses a non-contact multi-channel optoelectronic device slip ring, including a fixed slip ring stator 200, a slip ring rotor 100 coaxially arranged and rotatable with the slip ring stator 200, and a multi-channel optoelectronic device is arranged on one side of the slip ring rotor 100 relative to the slip ring stator 200. The multi-channel optoelectronic device includes outer ring paths that are independently arranged and do not interfere with each other, and a first inner ring path arranged within the outer ring path.

[0031] See also Figure 2 A multi-channel optoelectronic device having the same distribution structure as that on the surface of the slip-ring rotor 100 is provided on one side of the slip-ring stator 200 relative to the slip-ring rotor 100 .

[0032] Taking the outer ring passage on the slip ring rotor 100 as an example, the outer ring passage includes two groups of laser receivers 300 and five groups of laser transmitters 400 distributed circumferentially. The distribution of the two groups of laser receivers 300 and the five groups of laser transmitters 400 forms a loop line. The two groups of laser receivers 300 are distributed symmetrically on the loop line. The five groups of laser transmitters 400 are arranged at equal distances, and four groups of laser transmitters 400 are symmetrically distributed on the same side between the two groups of laser receivers 300, that is, located within half a circle of the loop line; one group of laser transmitters 400 is located on the other side of one group of laser receivers 300; please refer to Figure 3 The minimum angle formed between the lasers emitted by two adjacent laser emitters 400 is a, and the vertical distance between the angle a and the surface of the slip ring rotor 100 is h1.

[0033] It should be noted that in the outer loop, the number of laser emitters 400 is not limited to 5 as in this embodiment. In other embodiments, the number of laser emitters 400 can be set to n+1 as required, wherein n groups of laser emitters 400 are symmetrically distributed between the same side of two groups of laser receivers 300, that is, located within a half circle of the loop; and one group of laser emitters 400 is located on the other side of one group of laser receivers 300. For example, in this embodiment, n=4; in other embodiments, the value of n can also be 2, 3, 5, etc.

[0034] Taking the first inner ring passage on the slip-ring rotor 100 as an example, the first inner ring passage includes a group of laser receivers 300 arranged at the center of the slip-ring rotor 100 and four groups of laser emitters 400 circumferentially equidistantly arranged outside the laser receiver 300; the minimum angle formed between the laser emitters 400 on the first inner ring passage and the laser emitters 400 on the outer ring passage is b, and the vertical distance of the angle b from the surface of the slip-ring rotor 100 is h2; the distance between the slip-ring rotor 100 and the slip-ring stator 200 is s, and h1<s<h2.

[0035] It should be noted that in the first inner loop, the number of laser emitters 400 is not limited to 4 as in this embodiment. In other embodiments, the number of laser emitters 400 can be m as required. For example, in this embodiment, m=4. In other embodiments, the value of m can also be 2, 3, 5, etc.

[0036] Specifically, the outer ring passage and the first inner ring passage on the slip-ring rotor 100 correspond one-to-one to the outer ring passage and the first inner ring passage on the slip-ring stator 200 respectively. The laser transmitter 400 in the outer ring passage on the slip-ring rotor 100 transmits a laser signal to the laser receiver 300 in the outer ring passage on the slip-ring stator 200. Conversely, the laser transmitter 400 in the outer ring passage on the slip-ring stator 200 transmits a laser signal to the laser receiver 300 in the outer ring passage on the slip-ring rotor 100; the laser transmitter 400 in the first inner ring passage on the slip-ring rotor 100 transmits a laser signal to the laser receiver 300 in the first inner ring passage on the slip-ring stator 200. Conversely, the laser transmitter 400 in the first inner ring passage on the slip-ring stator 200 transmits a laser signal to the laser receiver 300 in the first inner ring passage on the slip-ring rotor 100.

[0037] To elaborate, in the outer ring passage of the slip-ring stator 200, the minimum angle formed between the lasers emitted by two adjacent laser emitters 400 is a, and the vertical distance between the angle a and the surface of the slip-ring rotor 100 is h1. According to the principle of light emission, the area formed within the diagonal range of the angle a is formed by the intersection and convergence of the two lasers to form a laser receivable range, while the area formed within the range of the angle a is an area that the laser cannot reach, and therefore cannot receive laser signals; based on this, the corresponding laser receiver 300 is set within the diagonal range of the angle a, which can ensure that the laser receiver 300 in the outer ring passage of the slip-ring rotor 100 can receive the signal emitted by the laser emitter 400 in the outer ring passage of the slip-ring stator 200. If this condition is to be met, the distance s between the slip-ring rotor 100 and the slip-ring stator 200 needs to be set to be greater than h1, so s>h1.

[0038] Similarly, when s>h1, it can also be ensured that the laser receiver 300 in the outer ring path of the slip-ring stator 200 receives the laser signal emitted by the laser transmitter 400 in the outer ring path of the slip-ring rotor 100.

[0039] Since the outer ring path and the first inner ring path are independent signal paths, the laser signal emitted by the laser transmitter 400 in the outer ring path should be prevented from affecting the laser receiver 300 in the inner ring path. That is to say, the laser receiver 300 in the inner ring path needs to be within the area formed by the angle b. If this condition is to be met, the distance s between the slip ring rotor 100 and the slip ring stator 200 needs to be set to be less than h2, so s<h2.

[0040] Based on this, h1<s<h2, the purpose of the laser receiver 300 in the outer loop path to stably receive the laser signal can be achieved, while avoiding the mutual interference of the laser signals emitted by the outer loop path and the first inner loop path, meeting the independent working performance of the outer loop path and the first inner loop path, and can respectively perform data transmission according to RS232, PROF I BUSDP, CANBUS, RS422 and other protocols, and there is no need to use an isolation ring for isolation between the outer loop path and the first inner loop path, further simplifying the production steps.

[0041] At the same time, the laser emitters 400 in the outer ring path are set in n+1 form, so that laser emitters 400 are set on both sides of one of the laser receivers 300, so that the laser receiver 300 corresponding to the receiving signal can receive lasers on both sides, so that the received laser signal is at a stable level. Since the slip ring rotor 100 is in a rotating state, it is only necessary to set laser emitters 300 on both sides of one of the laser receivers 400. This design method saves the number of laser emitters 400 and laser receivers 300, which can save production costs. In addition, the structures of the slip ring rotor 100 and the slip ring stator 200 are exactly the same, so the production process is simplified and convenient for mass production.

[0042] See also Figure 4 The slip-ring rotor 100 is rotated by the outer ring drive mode, the slip-ring stator 200 is fixedly mounted on the inner wall of the shell one, the slip-ring rotor 100 is fixedly mounted on the inner wall of the shell two, and the outer wall of the end of the shell two where the slip-ring rotor 100 is mounted is rotatably mounted on the end of the shell one where the slip-ring stator 200 is mounted through a bearing; there is no need for contact between the slip-ring stator 200 and the slip-ring rotor 100, so no mutual friction is generated, which can extend the service life. While the slip-ring rotor 100 is rotating at high speed, the laser receiver 300 stably receives the laser signal emitted by the corresponding laser transmitter 400 and transmits data according to the set protocol.

[0043] The laser receiver 300 is a device for receiving laser signals. In this embodiment, the laser receiver 300 is a PIN tube. In other embodiments, the laser receiver 300 may also be replaced by other devices with the same functions.

[0044] Example 2

[0045] This embodiment discloses a non-contact multi-channel optoelectronic device slip ring. Compared with Example 1, the only difference is that a second inner ring channel is used instead of the first inner ring channel in Example 1; the distribution type of the second inner ring channel is the same as that of the outer ring channel; in the second inner ring channel, the minimum angle formed between the lasers emitted by two adjacent laser emitters 400 is c, and the vertical distance between the angle c and the surface of the slip ring rotor 100 is h3, s>h1 and s>h3.

[0046] The working principle of the second inner loop passage in this embodiment is the same as the working principle of the outer loop passage in embodiment 1.

[0047] In this embodiment, the center of the slip ring rotor 100 is fixedly mounted on the central shaft, and one end of the central shaft is connected to a driving mechanism for driving the central shaft to rotate, so that the slip ring rotor 100 can rotate.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0050] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A non-contact multi-channel optoelectronic device slip ring, characterized in that: The invention comprises a fixed slip ring stator (200), a slip ring rotor (100) coaxial with the slip ring stator (200) and rotatably arranged, wherein a multi-channel photoelectric device is provided on one side of the slip ring rotor (100) relative to the slip ring stator (200), and the multi-channel photoelectric device comprises an outer ring channel and a first inner ring channel arranged in the outer ring channel; The outer ring passage comprises two groups of laser receivers (300) and n+1 groups of laser transmitters (400) distributed circumferentially, the two groups of laser receivers (300) are symmetrically distributed around the center, the n+1 groups of laser transmitters (400) are equidistantly arranged, and the n groups of laser transmitters (400) are symmetrically distributed between the same side of the two groups of laser receivers (300), and one group of laser transmitters (400) is located on the other side of one group of laser receivers (300); the minimum angle formed between the lasers emitted by two adjacent laser transmitters (400) is a, and the vertical distance between the angle a and the surface of the slip ring rotor (100) is h1; The first inner ring passage comprises a group of laser receivers (300) arranged at the center of the slip ring rotor (100) and m groups of laser transmitters (400) equidistantly arranged outside the laser receivers (300) in the circumferential direction; the minimum angle formed between the laser transmitters (400) on the first inner ring passage and the laser transmitters (400) on the outer ring passage is b, and the vertical distance between the angle b and the surface of the slip ring rotor (100) is h2; A multi-channel photoelectric device having the same surface distribution structure as the slip ring rotor (100) is provided on one side of the slip ring stator (200) relative to the slip ring rotor (100); the distance between the slip ring rotor (100) and the slip ring stator (200) is s, and h1<s<h2.

2. The non-contact multi-channel optoelectronic device slip ring according to claim 1, characterized in that: The first inner ring passage is replaced by a second inner ring passage; the distribution type of the second inner ring passage is the same as that of the outer ring passage; in the second inner ring passage, the minimum angle formed between the lasers emitted by two adjacent laser emitters (400) is c, and the vertical distance between the angle c and the surface of the slip ring rotor (100) is h3, s>h1 and s>h3.

3. The non-contact multi-channel optoelectronic device slip ring according to claim 1, characterized in that: The slip ring rotor (100) is rotated by an outer ring drive.

4. The non-contact multi-channel optoelectronic device slip ring according to claim 3, characterized in that: The slip ring stator (200) is fixedly mounted on the inner wall of the first shell, the slip ring rotor (100) is fixedly mounted on the inner wall of the second shell, and the outer wall of one end of the second shell where the slip ring rotor (100) is mounted is rotatably mounted on one end of the first shell where the slip ring stator (200) is mounted.

5. The non-contact multi-channel optoelectronic device slip ring according to claim 4, characterized in that: The outer wall of one end of the housing 2, on which the slip ring rotor (100) is installed, is rotatably installed on one end of the housing 1, on which the slip ring stator (200) is installed, via a bearing.

6. The non-contact multi-channel optoelectronic device slip ring according to claim 2, characterized in that: The slip ring rotor (100) is driven by a central shaft to achieve rotation.

7. The non-contact multi-channel optoelectronic device slip ring according to claim 6, characterized in that: The center of the slip ring rotor (100) is fixedly mounted on a central shaft, and one end of the central shaft is connected to a driving mechanism for driving the central shaft to rotate.

8. The non-contact multi-channel optoelectronic device slip ring according to claim 1, characterized in that: The outer loop passage and the first inner loop passage are independent passages that do not interfere with each other.

9. The non-contact multi-channel optoelectronic device slip ring according to claim 1, characterized in that: Said n=4.

10. The non-contact multi-channel optoelectronic device slip ring according to claim 1, characterized in that: The m=4.

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