Active optical communication slip ring

Abstract

The utility model relates to the technical field of optical fiber communication, and discloses an active optical communication slip ring, which comprises a stator part and a rotor part, the stator part comprises a rotor end transmitting / receiving plate, a rotor end LD transmitter and a rotor end PD detector, the rotor end LD transmitter and the rotor end PD detector are respectively and fixedly arranged on the rotor end transmitting / receiving plate, and the rotor end LD transmitter and the rotor end PD detector are fixedly arranged on the rotor end transmitting / receiving plate. The rotor part comprises a stator end transmitting / receiving plate, a stator end LD transmitter and a stator end PD detector, and the stator end LD transmitter and the stator end PD detector are fixedly arranged on the rotor end transmitting / receiving plate respectively. According to the utility model, photoelectric conversion and optical signal transmission are highly integrated, the complexity of a transmission system is reduced, batch production and cost reduction are facilitated, electric-optical-electric conversion of signals is realized in a limited space, and stable signal transmission in a 360-degree continuous or intermittent rotation process can be satisfied.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, and particularly relates to an active optical communication slip ring. Background Technique

[0002] A slip ring is an electrical component responsible for rotating and conveying energy and signals. The slip ring is usually installed at the rotation center of the device and mainly consists of two major parts: a rotating part and a stationary part. The rotating part is connected to the rotating structure of the device and rotates with it, called the "rotor", and the stationary part is connected to the fixed structure of the device, called the "stator".

[0003] An optical fiber slip ring is a product developed specifically for the rotating transmission of optical signals. However, it is a passive device and requires a dedicated optoelectronic converter (optical terminal unit) to be paired at the rotating end and the fixed end to achieve the corresponding high-speed electrical signal transmission. The structure is complex, the cost is high, and it is difficult to miniaturize. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an active optical communication slip ring, which solves the problems that the existing optical fiber slip ring is a product developed specifically for the rotating transmission of optical signals, requires a dedicated optoelectronic converter to be paired at the rotating end and the fixed end to achieve the corresponding high-speed electrical signal transmission, has a complex structure, a high cost, and is difficult to miniaturize.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: an active optical communication slip ring, including a stator part and a rotor part. The stator part includes a rotor-end transmitting / receiving board, a rotor-end LD transmitter, and a rotor-end PD detector. The rotor-end LD transmitter and the rotor-end PD detector are respectively fixedly arranged on the rotor-end transmitting / receiving board. The rotor part includes a stator-end transmitting / receiving board, a stator-end LD transmitter, and a stator-end PD detector. The stator-end LD transmitter and the stator-end PD detector are respectively fixedly arranged on the rotor-end transmitting / receiving board. During the rotation of the rotor part, the laser emitted by the rotor-end LD transmitter is always received by the stator-end PD detector, and the laser emitted by the stator-end LD transmitter is received by the rotor-end PD detector.

[0008] Preferably, bases are arranged on both the rotor-end transmitting / receiving board and the stator-end transmitting / receiving board. The rotor-end LD transmitter and the rotor-end PD detector, and the stator-end LD transmitter and the stator-end PD detector are respectively fixedly arranged in the inner cavity of the base. A 45-degree film and a 0-degree film are fixedly arranged in the inner cavity of the base.

[0009] Preferably, the laser emitted by the LD emitter at the rotor end is transmitted after passing through the 45-degree diaphragm at the rotor end, irradiated onto the 45-degree diaphragm at the stator end, reflected, and then transmitted through the 0-degree diaphragm at the stator end, and received by the PD detector at the stator end; the laser emitted by the LD emitter at the stator end is transmitted after passing through the 45-degree diaphragm, irradiated onto the 45-degree diaphragm at the rotor end, reflected, and then transmitted through the 0-degree diaphragm at the rotor end, and received by the PD detector at the rotor end.

[0010] Preferably, the LD emitter at the rotor end and the LD emitter at the stator end are coaxially installed, and the axis is the same as the rotating machine shaft.

[0011] Preferably, the PD detector at the rotor end and the PD detector at the stator end are coaxially installed, and the axis is the same as the rotating machine shaft. The laser emitted by the LD emitter at the rotor end is obliquely irradiated onto the PD detector at the stator end and received by the PD detector at the stator end; the laser emitted by the LD emitter at the stator end is obliquely irradiated onto the PD detector at the rotor end and received by the PD detector at the rotor end.

[0012] (III) Beneficial effects

[0013] The present utility model has the following beneficial effects:

[0014] This active optical communication slip ring integrates the optoelectronic conversion circuit board and the components with optical receiving and transmitting functions into one module, featuring high integration. It solves the electrical-optical-electrical transmission solution for signals between the rotating end and the fixed end within a limited space, replacing the traditional split combination solution of an optical terminal + fiber optic slip ring. During rotation, the optical axis coincides with the rotating machine shaft, ensuring the stability of bidirectional signal transmission. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0016] Figure 2 It is a schematic diagram of 0-degree optical transmission of the rotor part / stator part in Embodiment 1 of the present utility model;

[0017] Figure 3 It is a schematic diagram of optical transmission of the rotor part / stator part at a certain degree in Embodiment 1 of the present utility model;

[0018] Figure 4 It is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0019] Figure 5 It is a schematic diagram of 0-degree optical transmission of the rotor part / stator part in Embodiment 2 of the present utility model;

[0020] Figure 6 It is a schematic diagram of 180-degree optical transmission of the rotor part / stator part in Embodiment 2 of the present utility model.

[0021] In the figure: 1. Stator-end transmitting / receiving board; 11. Stator-end LD transmitter; 12. Stator-end PD detector; 2. Base; 21. 45-degree film; 22. 0-degree film; 3. Rotor-end transmitting / receiving board; 31. Rotor-end LD transmitter; 32. Rotor-end PD detector. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figure 1 , the present invention provides a technical solution: an active optical communication slip ring, including a stator part and a rotor part. The stator part includes a rotor-end transmitting / receiving board 3, a rotor-end LD transmitter, and a rotor-end PD detector 32. The rotor-end LD transmitter 31 and the rotor-end PD detector 32 are respectively fixedly arranged on the rotor-end transmitting / receiving board 3. The rotor part includes a stator-end transmitting / receiving board 1, a stator-end LD transmitter 11, and a stator-end PD detector 12. The stator-end LD transmitter 11 and the stator-end PD detector 12 are respectively fixedly arranged on the rotor-end transmitting / receiving board 3. During the rotation of the rotor part, the laser emitted by the rotor-end LD transmitter is always received by the stator-end PD detector 12, and the laser emitted by the stator-end LD transmitter 11 is received by the rotor-end PD detector 32. In the present invention, by integrating the optoelectronic conversion circuit board and the components with the functions of optical reception and optical emission into one module, it has a high degree of integration, solves the electrical-optical-electrical transmission solution of signals between the rotating end and the fixed end within a limited space, replaces the split combination solution of the traditional optical terminal + fiber optic slip ring, and the optical axis coincides with the rotating mechanical axis during rotation, ensuring the stability of bidirectional signal transmission.

[0024] Embodiment 1:

[0025] In this embodiment, bases 2 are arranged on both the rotor-end transmitting / receiving board 3 and the stator-end transmitting / receiving board 1. The rotor-end LD transmitter, the rotor-end PD detector 32, the stator-end LD transmitter 11, and the stator-end PD detector 12 are respectively fixedly arranged in the inner cavity of the base 2. A 45-degree film 21 and a 0-degree film 22 are fixedly arranged in the inner cavity of the base 2. The highly integrated solution of BOSA and the optoelectronic conversion circuit board is used to realize the high-speed electrical signal optical rotation transmission, replacing the split combination solution of the traditional optical terminal + fiber optic slip ring.

[0026] Refer to Figure 1As shown in the figure, in this embodiment, the laser emitted by the rotor-end LD transmitter is transmitted after passing through the 45-degree diaphragm 21 at the rotor end, irradiates the 45-degree diaphragm 21 at the stator end, and is reflected and transmitted through the 0-degree diaphragm 22 at the stator end, and is received by the stator-end PD detector 12; the laser emitted by the stator-end LD transmitter 11 is transmitted after passing through the 45-degree diaphragm 21, irradiates the 45-degree diaphragm 21 at the rotor end, and is reflected and transmitted through the 0-degree diaphragm 22 at the rotor end, and is received by the rotor-end PD detector 32. By setting the 45-degree diaphragm 21 and the 0-degree diaphragm 22, the 45-degree diaphragm 21 allows the transmitted light to pass through, that is, the optical signal sent by the local LD transmitter can smoothly pass through this diaphragm and be transmitted outward. When the optical signal from the opposite end arrives, the 45-degree diaphragm 21 reflects the received light, enabling the PD detector to detect these signals and perform corresponding processing or forwarding. The function of the 0-degree diaphragm 22 is mainly reflected in the selection of the wavelength of light, ensuring that only light of a specific wavelength can pass through, achieving fine control of light, and ensuring the accuracy and efficiency of optical signals during transmission and conversion.

[0027] In this embodiment, the rotor-end LD transmitter and the stator-end LD transmitter 11 are coaxially installed and the axis is the same as the rotating machine shaft. The LD transmitter base 2 is coaxially installed with the transmitting / receiving board, so that the optical axis coincides with the rotating machine shaft during rotation, improving the stability in optical signal transmission.

[0028] Embodiment 2:

[0029] Refer to Figure 3 As shown in the figure, in this embodiment, the rotor-end PD detector 32 and the stator-end PD detector 12 are coaxially installed and the axis is the same as the rotating machine shaft. The laser emitted by the rotor-end LD transmitter obliquely irradiates the stator-end PD detector 12 and is received by the stator-end PD detector 12; the laser emitted by the stator-end LD transmitter 11 obliquely irradiates the rotor-end PD detector 32 and is received by the rotor-end PD detector 32. The scheme of using the LD transmitter and the PD detector for oblique emission / reception is used to realize high-speed electrical signal optical rotation transmission, replacing the traditional split combination scheme of optical terminal + fiber optic slip ring.

[0030] It should be particularly noted that the laser wavelengths emitted by the rotor-end LD transmitter and the stator-end LD transmitter are different. Conventionally, the wavelengths of 1310 nm and 1550 nm are used, and the wavelengths of the corresponding PD detectors correspond to the wavelengths of the LD transmitters. For example, if the wavelengths of the rotor-end LD transmitter and the stator-end LD transmitter are 1310 nm and 1550 nm, then the wavelengths of the rotor-end PD detector and the stator-end PD detector should be 1550 nm and 1310 nm.

[0031] The transmitted / received electrical signals can be various types of high-speed signals, such as Ethernet signals, USB signals, HDMI signals, SDI signals, etc. Different types of signal transmissions can be achieved only by changing the hardware circuit of the transmitted / received circuit board, and the optical path transmission part has the same principle.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An active optical communication slip ring, characterized in that, It includes a stator part and a rotor part. The stator part includes a rotor-end emission / reception board, a rotor-end LD emitter, and a rotor-end PD detector. The rotor-end LD emitter and the rotor-end PD detector are respectively fixedly arranged on the rotor-end emission / reception board. The rotor part includes a stator-end emission / reception board, a stator-end LD emitter, and a stator-end PD detector. The stator-end LD emitter and the stator-end PD detector are respectively fixedly arranged on the rotor-end emission / reception board. During the rotation of the rotor part, the laser emitted by the rotor-end LD emitter is always received by the stator-end PD detector, and the laser emitted by the stator-end LD emitter is received by the rotor-end PD detector.

2. The active optical communication slip ring according to claim 1, wherein: Bases are arranged on both the rotor-end emission / reception board and the stator-end emission / reception board. The rotor-end LD emitter, the rotor-end PD detector, the stator-end LD emitter, and the stator-end PD detector are respectively fixedly arranged in the inner cavities of the bases. A 45-degree film and a 0-degree film are fixedly arranged in the inner cavities of the bases.

3. The active optical communication slip ring according to claim 2, characterized in that: The laser emitted by the rotor-end LD emitter is transmitted after passing through the rotor-end 45-degree film, irradiated on the 45-degree film at the stator end, reflected, and then transmitted through the 0-degree film at the stator end and received by the stator-end PD detector. The laser emitted by the stator-end LD emitter is transmitted after passing through the 45-degree film, irradiated on the 45-degree film at the rotor end, reflected, and then transmitted through the 0-degree film at the rotor end and received by the rotor-end PD detector.

4. The active optical communication slip ring according to claim 3, wherein: The rotor-end LD emitter and the stator-end LD emitter are coaxially installed, and the axis is the same as the rotating machine shaft.

5. The active optical communication slip ring according to claim 1, characterized in that: The rotor-end PD detector and the stator-end PD detector are coaxially installed, and the axis is the same as the rotating machine shaft. The laser emitted by the rotor-end LD emitter obliquely irradiates the stator-end PD detector and is received by the stator-end PD detector. The laser emitted by the stator-end LD emitter obliquely irradiates the rotor-end PD detector and is received by the rotor-end PD detector.

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