Active optical communication slip ring

Abstract

The invention 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 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 invention, 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 met.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber communication, in particular to an active optical communication slip ring. Background Art

[0002] Slip rings are electrical components that are responsible for the transmission of energy and signals for rotating circulation. Slip rings are usually installed at the rotating center of the equipment and are mainly composed of two parts: rotating and stationary. The rotating part is connected to the rotating structure of the equipment and rotates with it, which is called the "rotor", and the stationary part is connected to the fixed structure of the equipment, which is called the "stator".

[0003] Fiber optic slip ring is a product specially developed for the rotational transmission of optical signals. However, it is a passive device that requires dedicated photoelectric converters (optical terminals) at the rotating and fixed ends to achieve the corresponding high-speed electrical signal transmission. It has a complex structure, high cost, and is difficult to miniaturize. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an active optical communication slip ring, which solves the problem that the existing optical fiber slip ring is a product specially developed for the rotational transmission of optical signals, requires dedicated optoelectronic converters at the rotating end and the fixed end to achieve corresponding high-speed electrical signal transmission, has a complex structure, high cost, and is difficult to miniaturize.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an active optical communication slip ring, comprising a stator part and a rotor part, the stator part comprising 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 comprises 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, a base is provided on both the rotor-end transmitting / receiving board and the stator-end transmitting / receiving board, and 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 provided in the inner cavity of the base, and a 45-degree diaphragm and a 0-degree diaphragm are fixedly provided in the inner cavity of the base.

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

[0010] Preferably, the rotor-end LD transmitter and the stator-end LD transmitter are coaxially installed and the axis is the same as the rotating mechanical axis.

[0011] Preferably, the rotor-end PD detector is coaxially installed with the stator-end PD detector and the axis is the same as the rotating mechanical axis; the laser emitted by the rotor-end LD transmitter obliquely illuminates the stator-end PD detector and is received by the stator-end PD detector; the laser emitted by the stator-end LD transmitter obliquely illuminates the rotor-end PD detector and is received by the rotor-end PD detector.

[0012] (III) Beneficial effects

[0013] The present invention has the following beneficial effects:

[0014] The active optical communication slip ring is highly integrated by integrating the optoelectronic conversion circuit board with the components of optical receiving and optical transmitting functions into one module. It solves the electrical-optical-electrical transmission scheme of signals between the rotating end and the fixed end in a limited space, replacing the traditional split combination scheme of optical terminal + optical fiber slip ring. During the rotation process, the optical axis coincides with the rotating mechanical axis, ensuring the stability of bidirectional signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic diagram of 0-degree optical transmission of the rotor part / stator part in the first embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of optical transmission between the rotor part and the stator part in the first embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0019] Figure 5 This is a schematic diagram of 0-degree optical transmission of the rotor part / stator part in the second embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of 180-degree optical transmission between the rotor part and the stator part in the second embodiment of the present invention.

[0021] In the figure: 1. transmitting / receiving board at the stator end; 11. LD transmitter at the stator end; 12. PD detector at the stator end; 2. base; 21. 45 degree diaphragm; 22. 0 degree diaphragm; 3. transmitting / receiving board at the rotor end; 31. LD transmitter at the rotor end; 32. PD detector at the rotor end. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0023] See also 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. The present invention integrates the photoelectric conversion circuit board and the components with light receiving and light emitting functions into one module, which is highly integrated and solves the electric-optical-electrical transmission scheme of the signal between the rotating end and the fixed end in a limited space, replacing the traditional split combination scheme of optical terminal + optical fiber slip ring. During the rotation process, the optical axis coincides with the rotating mechanical axis, thereby ensuring the stability of the two-way transmission of the signal.

[0024] Embodiment 1:

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

[0026] Reference Figure 1As shown, in this embodiment, the laser emitted by the rotor-end LD transmitter is transmitted through the 45-degree diaphragm 21 at the rotor end, and is reflected after being irradiated to the 45-degree diaphragm 21 at the stator end, and is 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 through the 45-degree diaphragm 21, and is reflected after being irradiated to the 45-degree diaphragm 21 at the rotor end, and is transmitted through the 0-degree diaphragm 22 at the rotor end, and is received by the rotor-end PD detector 32. Through the provision of the 45-degree diaphragm 21 and the 0-degree diaphragm 22, the 45-degree diaphragm 21 allows the transmission of the emitted light, that is, the optical signal sent by the local LD ​​transmitter can smoothly pass through the diaphragm and be transmitted outward. When the optical signal from the opposite end arrives, the 45-degree diaphragm 21 reflects the received light, so that the PD detector can detect these signals and perform corresponding processing or forwarding. The function of the 0-degree diaphragm 22 is mainly to select the wavelength of light, ensuring that only light of a specific wavelength can pass through, thereby 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 is coaxially installed with the stator end LD transmitter 11 and the axis is the same as the rotating mechanical axis. The LD transmitter base 2 is coaxially installed with the transmitting / receiving board, so that the optical axis coincides with the rotating mechanical axis during rotation, improving the stability of optical signal transmission.

[0028] Embodiment 2:

[0029] Reference Figure 3 As shown, in this embodiment, the rotor-end PD detector 32 is coaxially installed with the stator-end PD detector 12, and the axis is the same as the rotating mechanical axis. 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 solution of oblique transmission / reception of the LD transmitter and the PD detector is used to realize high-speed electrical signal optical rotation transmission, replacing the traditional split combination solution of optical terminal + optical fiber slip ring.

[0030] It is particularly important to note that the wavelengths of the lasers emitted by the rotor-end LD emitter and the stator-end LD emitter are different. Conventionally, 1310nm and 1550nm wavelengths are used. The wavelength of the corresponding PD detector corresponds to the wavelength of the LD emitter. For example, if the wavelengths of the rotor-end LD emitter and the stator-end LD emitter are 1310nm and 1550nm, respectively, then the wavelengths of the rotor-end PD detector and the stator-end PD detector should be 1550nm and 1310nm, respectively.

[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. The transmission of different types of signals can be achieved by simply changing the hardware circuit of the transmitting / receiving circuit board. The principle of the optical transmission part is the same.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 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.

2. An active optical communication slip ring according to claim 1, characterized in that: The rotor-end transmitting / receiving board and the stator-end transmitting / receiving board are both provided with a base, and the rotor-end LD transmitter and the rotor-end PD detector, the stator-end LD transmitter and the stator-end PD detector are respectively fixedly arranged in the inner cavity of the base, and a 45-degree diaphragm and a 0-degree diaphragm are fixedly arranged in the inner cavity of the base.

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

4. An active optical communication slip ring according to claim 3, characterized in that: The rotor-end LD transmitter is coaxially installed with the stator-end LD transmitter, and the axis is the same as the rotating mechanical axis.

5. The active optical communication slip ring according to claim 1, characterized in that: The rotor-end PD detector is coaxially installed with the stator-end PD detector and the axis is the same as the rotating mechanical axis. The laser emitted by the rotor-end LD transmitter obliquely illuminates the stator-end PD detector and is received by the stator-end PD detector; the laser emitted by the stator-end LD transmitter obliquely illuminates the rotor-end PD detector and is received by the rotor-end PD detector.

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