Satellite rotating cabin signal transmission system and method based on photoelectric slip ring

Abstract

The invention relates to a satellite rotating cabin signal transmission system and method based on a photoelectric slip ring, and the system comprises a baseline conversion module which is located in a satellite rotating cabin and is used for converting a digital signal and an optical signal into a coupled optical signal or converting the coupled optical signal into a digital signal and an optical signal; the photoelectric slip ring is located in the rotary table, the photoelectric slip ring comprises a smooth slip ring and an electric slip ring, the photoelectric slip ring is driven by the rotary table to rotate, and the photoelectric slip ring is used for non-contact transmission of optical signals or electric signals; and the platform conversion module is located in the satellite platform cabin, and the platform conversion module is used for converting the digital signals and the optical signals into coupled optical signals or converting the coupled optical signals into the digital signals and the optical signals. According to the satellite rotating cabin signal transmission system and method based on the photoelectric slip ring, satellite-borne high-speed electric signals, digital signals and optical signals are transmitted in a rotating mode through the photoelectric slip ring, and lossless and high-speed transmission of data can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of spacecraft communication technology, and in particular to a satellite rotating cabin signal transmission system and method based on an optoelectronic slip ring. Background Art

[0002] There are a large number of spacecraft in orbit, which have developed from satellites that did not carry scientific instruments and equipment to space stations and deep space landers with complex functions. In order to adapt to complex scenes or complete specific tasks, the mechanical structure of the spacecraft needs to rotate relative to each other. In order to ensure data transmission between relatively rotating spacecraft devices, conductive slip rings are needed to establish an electrical path for data transmission between relatively moving devices.

[0003] At present, in terms of signal transmission technology for satellite-borne rotating mechanisms, considering the reliability of signal transmission, products such as conductive slip rings are mainly used. Products such as conductive slip rings mainly face the following problems:

[0004] 1. Conductive slip rings and other products mainly realize contact transmission of electrical signals through the brush wire contact of the slip ring. The signal stability during the transmission process is affected by the dynamic contact resistance of the conductive slip ring, which is prone to transmission errors;

[0005] 2. Existing conductive slip rings achieve signal transmission through friction contact, and their service life is related to the degree of wear;

[0006] 3. Common signal transmission and signal level conversion such as CAN bus, RS422 bus, LVDS, optical signal, etc. are relatively mature in the application of ground rotating mechanism equipment. In space applications such as satellites, they are limited by the life wear of the rotating mechanism and the reliability of signal transmission. The amount of data transmitted and the data rate between the existing conductive slip ring rotating parts and the fixed platform are limited.

[0007] 4. For existing conductive slip rings, the number of signal transmission paths is positively correlated with the number of loops of the conductive slip ring. As the number of signal transmission paths increases, the weight and volume of the conductive slip ring increase exponentially, which is not conducive to the lightweight and miniaturization of complex signal transmission of satellite-borne systems. Summary of the invention

[0008] In view of some or all of the problems in the prior art, the present invention provides a satellite rotating cabin signal transmission system based on an optoelectronic slip ring, the system comprising:

[0009] A baseline conversion module, which is located in the satellite rotating cabin, and is used to convert digital signals and optical signals into coupled optical signals or convert coupled optical signals into digital signals and optical signals;

[0010] An optoelectronic slip ring, which is located in the turntable, the optoelectronic slip ring comprises a smooth ring and an electric slip ring, the optoelectronic slip ring is driven to rotate by the turntable, and the optoelectronic slip ring is used for contactless transmission of optical or electrical signals; and

[0011] The platform conversion module is located in the satellite platform cabin and is used to convert digital signals and optical signals into coupled optical signals or to convert coupled optical signals into digital signals and optical signals.

[0012] Further, the smooth ring is connected in series with the electric slip ring; the smooth ring includes a smooth ring stator and a smooth ring rotor; the electric slip ring includes an electric slip ring stator and an electric slip ring rotor;

[0013] The smooth ring rotor is connected to the electric slip ring rotor through a fork mechanism, the turntable stator is connected to the smooth ring stator and the electric slip ring stator, the electric slip ring is driven to rotate by the primary fork mechanism, and the smooth ring is driven to rotate by the secondary fork mechanism; and

[0014] The smooth ring rotor is connected to the baseline conversion module, and the smooth ring stator is connected to the platform conversion module.

[0015] Further, the digital signal includes one or more of a CAN signal, an RS422 signal, or a LVDS signal; and / or

[0016] The optical signal includes one or more of a satellite rotating cabin optical signal and a satellite platform cabin optical signal.

[0017] Further, the baseline conversion module includes a digital optical module and / or a wavelength conversion module; and / or

[0018] The platform conversion module includes a digital optical module and / or a wavelength conversion module.

[0019] Further, the digital optical module includes an input digital optical module and a receiving digital optical module, the input digital optical module is used to convert the digital signal into an optical signal, and the receiving digital optical module is used to convert the optical signal into a digital signal; and / or

[0020] The wavelength conversion module includes an input wavelength conversion module and a receiving wavelength conversion module. The input wavelength conversion module and the receiving wavelength conversion module are used to convert an input optical signal into an optical signal of a specific wavelength according to requirements.

[0021] Furthermore, the baseline conversion module and the platform conversion module also include a wavelength division multiplexer;

[0022] The wavelength division multiplexer is used to couple multiple optical signals into the same optical fiber and input the coupled optical signals into the optoelectronic slip ring; the wavelength division multiplexer is also used to recover multiple optical signals from the coupled optical signals output by the optoelectronic slip ring and input the recovered multiple optical signals into the digital optical module or the wavelength conversion module.

[0023] The present invention also provides a satellite rotating cabin signal transmission method based on an optoelectronic slip ring, the method comprising the following steps:

[0024] The input digital optical module converts the input multi-channel digital signals into multi-channel optical signals, the input wavelength conversion module converts the input optical signals into optical signals of required wavelengths, and the multi-channel optical signals and the optical signals of required wavelengths are input into the optical transmission wavelength division multiplexer;

[0025] The optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring;

[0026] The optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer;

[0027] The optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into a receiving digital optical module and a receiving wavelength conversion module; and

[0028] The receiving digital optical module and the receiving wavelength conversion module convert the recovered multi-path optical signals into digital signals or optical signals, and output the converted signals.

[0029] Further, the input multi-channel signal includes one or more of a CAN signal, an RS422 signal, or a LVDS signal; and / or

[0030] The input optical signal includes one or more of a satellite rotating cabin optical signal and a satellite platform cabin optical signal.

[0031] Furthermore, the optoelectronic slip ring includes a single-channel optoelectronic slip ring or a multi-channel optoelectronic slip ring.

[0032] Furthermore, the RS422 signal or LVDS signal is converted into a multi-channel optical signal through the input digital optical module; and

[0033] The CAN signal is converted into an optical signal through the input digital optical module after the protocol conversion.

[0034] The technical solution provided by the present invention has the following beneficial effects:

[0035] 1. The satellite rotating cabin signal transmission system and method based on optoelectronic slip ring provided by the present invention can realize signal transmission of satellite-borne high-speed electrical signals, digital signals, and optical signals in the rotating mode through optoelectronic slip rings, which can achieve lossless and high-speed transmission of data. The satellite rotating cabin signal transmission system and method based on optoelectronic slip ring provided by the present invention have been successfully applied to the transmission and conversion of on-orbit optical signals, CAN signals, RS422 signals, and LVDS signals between a certain satellite rotating cabin and a platform cabin.

[0036] 2. The satellite rotating cabin signal transmission system based on optoelectronic slip ring provided by the present invention uses optoelectronic slip ring to modulate different signals to different optical wavelengths, thereby realizing single-channel or multi-channel transmission of multiple digital signals, which is beneficial to the lightweight and miniaturization of complex signal transmission of satellite-borne systems.

[0037] 3. The satellite rotating cabin signal transmission system based on optoelectronic slip ring provided by the present invention can couple optical signals to one optical fiber or multiple optical fibers through one or more wavelength division multiplexers. For important signals, they can be transmitted through multi-channel hot backup, and electrical signal conversion and optical channel transmission redundancy can be realized, which can meet the high reliability and high stability transmission requirements of aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0039] Figure 1 A schematic diagram of the satellite rotating cabin sub-cabin design according to an embodiment of the present invention is shown;

[0040] Figure 2 A schematic diagram of a satellite rotating cabin signal transmission system based on an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0041] Figure 3 A schematic diagram of the structure of an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0042] Figure 4 A schematic flow chart of a method for transmitting signals in a satellite rotating cabin based on an optoelectronic slip ring according to an embodiment of the present invention is shown;

[0043] Figure 5 A schematic diagram showing a single-channel satellite rotating cabin signal transmission method based on an optoelectronic slip ring according to an embodiment of the present invention; and

[0044] Figure 6A schematic diagram of a multi-channel satellite rotating cabin signal transmission method based on an optoelectronic slip ring according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0045] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments may be implemented without one or more specific details or with other replacement and / or additional methods or components. In other cases, well-known structures or operations are not shown or described in detail to avoid obscuring the inventive point of the present invention. Similarly, for the purpose of explanation, specific numbers and configurations are set forth to provide a comprehensive understanding of embodiments of the present invention. However, the present invention is not limited to these specific details.

[0046] In this specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily all refer to the same embodiment.

[0047] It should be noted that the embodiments of the present invention describe the method steps in a specific order, but this is only for the purpose of illustrating the specific embodiment, rather than limiting the order of the steps. On the contrary, in different embodiments of the present invention, the order of the steps can be adjusted according to actual needs.

[0048] In the present invention, each module of the system according to the present invention can be implemented using software, hardware, firmware or a combination thereof. When the module is implemented using software, the function of the module can be implemented by a computer program flow, for example, the module can be implemented by a code segment (such as a code segment of a language such as C, C++) stored in a storage device (such as a hard disk, a memory, etc.), wherein the corresponding function of the module can be implemented when the code segment is executed by a processor. When the module is implemented using hardware, the function of the module can be implemented by setting a corresponding hardware structure, for example, the function of the module can be implemented by hardware programming a programmable device such as a field programmable gate array (FPGA), or the function of the module can be implemented by designing an application-specific integrated circuit (ASIC) including electronic devices such as a plurality of transistors, resistors and capacitors. When the module is implemented using firmware, the function of the module can be written into a read-only memory such as an EPROM or EEPROM of the device in the form of a program code, and the corresponding function of the module can be implemented when the program code is executed by a processor. In addition, some functions of the module may need to be implemented by separate hardware or by collaboration with the hardware, for example, the detection function is implemented by corresponding sensors (such as proximity sensors, acceleration sensors, gyroscopes, etc.), the signal transmission function is implemented by corresponding communication devices (such as Bluetooth devices, infrared communication devices, baseband communication devices, Wi-Fi communication devices, etc.), the output function is implemented by corresponding output devices (such as displays, speakers, etc.), and so on.

[0049] The present invention mainly solves the problem of cable entanglement when digital signals are transmitted through wires and pass through a rotating cabin. Traditional electric slip rings can solve the cable entanglement problem of rotating state signal transmission, but the friction pair contact characteristics of electric slip rings will cause transmission errors and wear life, which seriously affect the signal transmission rate. In order to solve the application problems of power transmission and signal transmission in the satellite-borne rotation mode, the present invention provides a satellite rotating cabin signal transmission system and method based on photoelectric slip rings. Satellite-borne high-speed electrical signals, digital signals, and optical signals are transmitted in the rotation mode through photoelectric slip rings, which can achieve lossless and high-speed transmission of data. The satellite rotating cabin signal transmission system and method based on photoelectric slip rings provided by the present invention have been successfully applied to the transmission and conversion of on-orbit optical signals, CAN signals, RS422 signals, and LVDS signals between a certain satellite rotating cabin and a platform cabin.

[0050] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0051] Figure 1 FIG. 1 is a schematic diagram showing a satellite rotating cabin sub-cabin design according to an embodiment of the present invention. Figure 1 As shown, the satellite rotating cabin 1, namely the satellite payload cabin, rotates at an angular velocity ω, the satellite rotating cabin 1 is connected to the turntable 2, and the satellite platform cabin 3 is fixed.

[0052] Figure 2 FIG. 1 is a schematic diagram of a satellite rotating cabin signal transmission system based on an optoelectronic slip ring according to an embodiment of the present invention. Figure 2 As shown, the satellite rotating cabin signal transmission system based on the optoelectronic slip ring includes a baseline conversion module 10, an optoelectronic slip ring 20 and a platform conversion module 30. The baseline conversion module 10 is located in the satellite rotating cabin 1, and the baseline conversion module 10 is used to convert digital signals and optical signals into coupled optical signals or convert coupled optical signals into digital signals and optical signals. The optoelectronic slip ring 20 is located in the turntable 2, and the optoelectronic slip ring 20 includes a smooth ring and an electric slip ring. The optoelectronic slip ring 20 is driven to rotate by the turntable 2, and the optoelectronic slip ring 20 is used for non-contact transmission of optical signals or electric signals. The platform conversion module 30 is located in the satellite platform cabin 3, and the platform conversion module 30 is used to convert digital signals and optical signals into coupled optical signals or convert coupled optical signals into digital signals and optical signals. In one embodiment of the present invention, the digital signal includes one or more of a CAN signal, an RS422 signal or a LVDS signal; and / or the optical signal includes one or more of a satellite rotating cabin optical signal or a satellite platform cabin optical signal.

[0053] Figure 3The schematic diagram of the structure of the optoelectronic slip ring of an embodiment of the present invention is shown. As shown in the figure, the smooth ring 201 and the electric slip ring 202 are connected in series. The smooth ring 201 includes a smooth ring stator 205 and a smooth ring rotor 204; the electric slip ring 202 includes an electric slip ring stator 207 and an electric slip ring rotor 208. The smooth ring rotor 204 and the electric slip ring rotor 208 realize the transmission of driving torque through a two-stage fork mechanism. The turntable stator 203 is connected with the smooth ring stator 205 and the electric slip ring stator 207. The motor output shaft 210 drives the first-stage fork mechanism 209, and then the first-stage fork mechanism 209 drives the electric slip ring 202 to rotate, and then the second-stage fork mechanism 206 drives the smooth ring 201 to rotate. The rotation angular velocity of the motor output shaft 210 is ω. The installation steps of the smooth ring 201 and the electric slip ring 202 are as follows: first, the electric slip ring rotor 208 and the smooth ring rotor 204 are installed through the fork mechanism, and the coaxiality and verticality of the installation are adjusted to realize the synchronous rotation of the two slip rings; then the turntable stator 203 is installed with the smooth ring stator 205 and the electric slip ring stator 207, and the coaxiality and verticality of the slip ring and the turntable are adjusted, and the turntable motor rotor end is connected to the photoelectric slip ring rotor end, and the turntable fork drives the electric slip ring to rotate, and then the electric slip ring fork realizes the synchronous drive of the smooth ring; the fork mechanism adopts clearance fit, and the requirements for the shaft system installation accuracy are not high. The smooth ring rotor 204 is connected to the baseline conversion module 10, and the smooth ring stator 205 is connected to the platform conversion module 30, so as to realize the interconnection and intercommunication of the external signal channel of the smooth ring 201. The platform conversion module 30 is connected to the satellite platform cabin 3 corresponding to the single-machine power supply interface and remote control telemetry signal connection, and the baseline conversion module 10 is connected to the satellite rotating cabin 1 corresponding to the single-machine power supply interface and remote control telemetry signal connection. The signal transmission mechanism is: the satellite rotating cabin 1 sends data to the corresponding single machine, and the satellite platform cabin 3 tests the correctness of the received data to the corresponding single machine; or the satellite platform cabin 3 sends data to the corresponding single machine, and the satellite rotating cabin 1 tests the correctness of the received data to the corresponding single machine.

[0054] In one embodiment of the present invention, the baseline conversion module 10 includes a digital optical module and / or a wavelength conversion module; and / or the platform conversion module 30 includes a digital optical module and / or a wavelength conversion module. In one embodiment of the present invention, the digital optical module includes an input digital optical module and a receiving digital optical module, the input digital optical module is used to convert a digital signal into an optical signal, and the receiving digital optical module is used to convert an optical signal into a digital signal. In one embodiment of the present invention, the wavelength conversion module includes an input wavelength conversion module and a receiving wavelength conversion module, the input wavelength conversion module and the receiving wavelength conversion module are used to convert the input optical signal into an optical signal of a specific wavelength according to demand. In one embodiment of the present invention, the baseline conversion module 10 and the platform conversion module 30 may also include a wavelength division multiplexer; the wavelength division multiplexer is used to couple multiple optical signals into the same optical fiber, and input the coupled optical signals into the optoelectronic slip ring; the wavelength division multiplexer is also used to recover multiple optical signals from the coupled optical signals output by the optoelectronic slip ring, and input the recovered multiple optical signals into the digital optical module or the wavelength conversion module.

[0055] Figure 4 A schematic flow chart of a satellite rotating cabin signal transmission method based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 5 A schematic diagram of a single-channel satellite rotating cabin signal transmission method based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 6 The schematic diagram of a multi-channel satellite rotating cabin signal transmission method based on an optoelectronic slip ring according to an embodiment of the present invention is shown. Figure 4-Figure 6 The present invention provides a method for transmitting signals in a satellite rotating cabin based on an optoelectronic slip ring. The method comprises the following steps:

[0056] First, the input digital optical module converts the input multi-channel digital signal into a multi-channel optical signal, the input wavelength conversion module converts the input optical signal into an optical signal of the required wavelength, and the multi-channel optical signal and the optical signal of the required wavelength are input into the optical transmission wavelength division multiplexer. The baseline conversion module 10 is located in the satellite rotating cabin 1. In one embodiment of the present invention, the input multi-channel signal includes one or more of a CAN signal, an RS422 signal, or a LVDS signal; the input optical signal includes one or more of a satellite rotating cabin optical signal or a satellite platform cabin optical signal. As shown in the figure, the input optical signal passes through the input wavelength conversion module 112, selects a wavelength according to the demand, and is converted into an optical signal corresponding to the required wavelength. For optical signals of different wavelengths, one or more wavelength division multiplexers can be used to convert optical signals of different wavelengths into one or more optical signals. The CAN signal passes through the CAN interface chip SJA1000, and after software implementation of protocol conversion, the storage and forwarding or real-time forwarding form can be used, and then converted into optical signals of different wavelengths through the first input digital optical module 113. The LVDS signal is converted into optical signals of different wavelengths after level conversion through the second input digital optical module 114. The RS422 signal is converted into an optical signal of different wavelengths after level conversion through the third input digital optical module 115. As shown in the figure, the baseline conversion module 10 includes a first optical transmission wavelength division multiplexer 111, a second optical transmission wavelength division multiplexer 116, a third optical transmission wavelength division multiplexer 117, and a fourth optical transmission wavelength division multiplexer 118. In one embodiment of the present invention, the baseline conversion module 10 may include two or more wavelength division multiplexers.

[0057] Next, the optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring. In one embodiment of the present invention, the optoelectronic slip ring 20 includes a single-channel optoelectronic slip ring or a multi-channel optoelectronic slip ring.

[0058] Next, the optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer. As shown in the figure, the platform conversion module 30 includes a first optical receiving wavelength division multiplexer 311, a second optical receiving wavelength division multiplexer 316, a third optical receiving wavelength division multiplexer 317, and a fourth optical receiving wavelength division multiplexer 318. In one embodiment of the present invention, the baseline conversion module 30 may include two or more wavelength division multiplexers. The platform conversion module 30 is located in the satellite platform cabin 3.

[0059] Next, the optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into the receiving digital optical module and the receiving wavelength conversion module. As shown in the figure, the baseline conversion module 30 includes a receiving wavelength conversion module 312, a first receiving digital optical module 313, a second receiving digital optical module 314 and a third receiving digital optical module 315.

[0060] Finally, the receiving digital optical module and the receiving wavelength conversion module convert the recovered multi-path optical signals into digital signals or optical signals, and output the converted signals.

[0061] In one embodiment of the present invention, the transmission method uses a single-channel optoelectronic slip ring to convert the input multi-channel signals into the transmission of multi-channel optical signals; or the transmission method distributes the input signals of the same function on different optoelectronic slip ring channels, and uses multi-channel optoelectronic slip rings to convert them into the transmission of multi-channel optical signals, thereby avoiding the loss of function when one optoelectronic slip ring fails, and improving the application reliability. In one embodiment of the present invention, a wavelength division multiplexer may not be used, but one wavelength may be used to correspond to one optical channel.

[0062] The satellite rotating cabin signal transmission system based on optoelectronic slip ring provided by the present invention uses optoelectronic slip ring to modulate different signals to different optical wavelengths, realizes single-channel or multi-channel transmission of multiple digital signals, and is beneficial to the lightweight and miniaturization of complex signal transmission of satellite-borne systems; optical signals can be coupled to one optical fiber or multiple optical fibers through one or more wavelength division multiplexers, and important signals can be transmitted through multi-channel hot backup, which can realize electrical signal conversion and optical channel transmission redundancy, and can meet the high reliability and high stability transmission requirements of aerospace.

[0063] Although various embodiments of the present invention are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the technical solutions of the present invention and their equivalents.

Claims

1. A satellite rotating cabin signal transmission system based on optoelectronic slip ring, characterized in that: include: A baseline conversion module, which is located in the satellite rotating cabin, and is used to convert digital signals and optical signals into coupled optical signals or convert coupled optical signals into digital signals and optical signals; An optoelectronic slip ring is located in the turntable. The optoelectronic slip ring includes a smooth ring and an electric slip ring. The optoelectronic slip ring is driven to rotate by the turntable. The optoelectronic slip ring is used for contactless transmission of optical or electrical signals. as well as The platform conversion module is located in the satellite platform cabin and is used to convert digital signals and optical signals into coupled optical signals or to convert coupled optical signals into digital signals and optical signals.

2. The satellite rotating cabin signal transmission system based on optoelectronic slip ring according to claim 1 is characterized in that: The smooth ring is connected in series with the electric slip ring; the smooth ring comprises a smooth ring stator and a smooth ring rotor; the electric slip ring comprises an electric slip ring stator and an electric slip ring rotor; The smooth ring rotor is connected to the electric slip ring rotor through a fork mechanism, the turntable stator is connected to the smooth ring stator and the electric slip ring stator, the electric slip ring is driven to rotate by the primary fork mechanism, and the smooth ring is driven to rotate by the secondary fork mechanism; and The smooth ring rotor is connected to the baseline conversion module, and the smooth ring stator is connected to the platform conversion module.

3. The satellite rotating cabin signal transmission system based on optoelectronic slip ring according to claim 1 is characterized in that: The digital signal includes one or more of a CAN signal, an RS422 signal, or a LVDS signal; and / or The optical signal includes one or more of a satellite rotating cabin optical signal and a satellite platform cabin optical signal.

4. The satellite rotating cabin signal transmission system based on optoelectronic slip ring according to claim 1 is characterized in that: The baseline conversion module includes a digital optical module and / or a wavelength conversion module; and / or The platform conversion module includes a digital optical module and / or a wavelength conversion module.

5. The satellite rotating cabin signal transmission system based on optoelectronic slip ring according to claim 4 is characterized in that: The digital optical module comprises an input digital optical module and a receiving digital optical module, wherein the input digital optical module is used to convert a digital signal into an optical signal, and the receiving digital optical module is used to convert an optical signal into a digital signal; and / or The wavelength conversion module includes an input wavelength conversion module and a receiving wavelength conversion module. The input wavelength conversion module and the receiving wavelength conversion module are used to convert an input optical signal into an optical signal of a specific wavelength according to requirements.

6. The satellite rotating cabin signal transmission system based on optoelectronic slip ring according to claim 4 is characterized in that: The baseline conversion module and the platform conversion module also include a wavelength division multiplexer; The wavelength division multiplexer is used to couple multiple optical signals into the same optical fiber and input the coupled optical signals into the optoelectronic slip ring; the wavelength division multiplexer is also used to recover multiple optical signals from the coupled optical signals output by the optoelectronic slip ring and input the recovered multiple optical signals into the digital optical module or the wavelength conversion module.

7. A method for using the satellite rotating cabin signal transmission system based on optoelectronic slip ring according to any one of claims 1 to 6, characterized in that: The steps include: The input digital optical module converts the input multi-channel digital signals into multi-channel optical signals, the input wavelength conversion module converts the input optical signals into optical signals of required wavelengths, and inputs the multi-channel optical signals and the optical signals of required wavelengths into the optical transmission wavelength division multiplexer; The optical transmission wavelength division multiplexer couples the input optical signal into the same optical fiber, and inputs the coupled optical signal into the optoelectronic slip ring; The optoelectronic slip ring transmits the optical signal to the optical receiving wavelength division multiplexer; The optical receiving wavelength division multiplexer restores the coupled optical signal output by the optoelectronic slip ring into a multi-channel optical signal, and inputs the restored multi-channel optical signal into a receiving digital optical module and a receiving wavelength conversion module; as well as The receiving digital optical module and the receiving wavelength conversion module convert the recovered multi-path optical signals into digital signals or optical signals, and output the converted signals.

8. The method for transmitting signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 7, characterized in that: The input multi-channel signal includes one or more of a CAN signal, an RS422 signal, or a LVDS signal; and / or The input optical signal includes one or more of a satellite rotating cabin optical signal and a satellite platform cabin optical signal.

9. The method for transmitting signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 7, characterized in that: The optoelectronic slip ring includes a single-channel optoelectronic slip ring or a multi-channel optoelectronic slip ring.

10. The method for transmitting signals in a satellite rotating cabin based on an optoelectronic slip ring according to claim 8, characterized in that: The RS422 signal or LVDS signal is converted into a multi-channel optical signal by the input digital optical module; and The CAN signal is converted into an optical signal through the input digital optical module after the protocol conversion.

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