CN-122027027-A - Non-contact slip ring optical communication system and analysis method

Abstract

According to an embodiment of the present disclosure, a non-contact slip ring optical communication system and an analysis method are provided. The system includes a stator, a rotor, and a communication unit. The communication unit includes at least one transmitter disposed on one of the stator and the rotor and at least one receiver disposed on the other of the stator and the rotor, the at least one transmitter configured to convert the driving electrical signal into an optical signal and transmit the optical signal to free space, the at least one receiver configured to collect the optical signal from free space and obtain a photo-generated electrical signal based on the optical signal to form an optical communication link in free space between the at least one transmitter and the at least one receiver, wherein the communication unit is configured to bring a first index of the photo-generated electrical signal within a predetermined index range.

Inventors

• LUO YINGXIAN
• ZHAO HONG
• LI BING

Assignees

• 陕西旋星电子科技有限公司

Dates

Publication Date

20260512

Application Date

20260409

Claims (20)

1. 1. A non-contact slip ring optical communication system, comprising: a stator and a rotor configured to be rotatable with respect to the stator, and a free space is defined between the stator and the rotor; A communication unit comprising at least one transmitter disposed on one of the stator and the rotor and at least one receiver disposed on the other of the stator and the rotor, the at least one transmitter configured to convert a driving electrical signal into an optical signal and transmit the optical signal to the free space, the at least one receiver configured to collect the optical signal from the free space and derive a photo-generated electrical signal based on the optical signal to form an optical communication link in the free space between the at least one transmitter and the at least one receiver, Wherein the communication unit is configured to bring a first index of the photo-generated electrical signal, which indicates a degree of stability of the photo-generated electrical signal during rotation of the rotor, within a predetermined index range, the first index being determined based on a ratio between a fluctuation range of a signal intensity of the photo-generated electrical signal, which indicates a difference between a maximum signal intensity and a minimum signal intensity of the photo-generated electrical signal, and an average value, and the predetermined index range being related to a rated data transmission rate of the communication unit.
2. 2. The system of claim 1, wherein a second indicator of the photo-generated electrical signal exceeds an indicator threshold, the second indicator indicating a ratio between a minimum signal strength of the photo-generated electrical signal and an average of signal strengths.
3. 3. The system of claim 2, wherein the average value is a time average value of the photogenerated electrical signal.
4. 4. The system of claim 1, wherein an upper limit of the predetermined index range is associated with the nominal data transmission rate.
5. 5. The system of claim 4, wherein an upper limit of the predetermined range of metrics falls between a first value and a second value.
6. 6. The system of claim 5, wherein the first value is 0 and/or the second value is 1.
7. 7. The system of claim 4, wherein the nominal data transmission rate is inversely related to the upper limit.
8. 8. The system of claim 7, wherein the nominal data transmission rate And the upper limit value alpha accords with at least one of the following corresponding relations: When 0< Alpha is less than or equal to 1.00 when less than or equal to 9.6 kilobits per second, When 9.6 kbits per second < Alpha is less than or equal to 0.80 when less than or equal to 115.2 kilobits per second, When 115.2 kilobits per second < Alpha is less than or equal to 0.60 when less than or equal to 500 kilobits per second, When 500 kilobits per second < Alpha is less than or equal to 0.50 when less than or equal to 1 megabit per second, When 1 megabit per second < Alpha is less than or equal to 0.40 when less than or equal to 12 megabits per second, When 12 megabits per second < Alpha is less than or equal to 0.20 at less than or equal to 100 megabits per second, or When 100 megabits per second < Alpha is less than or equal to 0.08 when less than or equal to 1 gigabit per second.
9. 9. The system of claim 1, wherein the at least one receiver is configured to convert the optical signal to an original electrical signal, the photo-generated electrical signal being formed based on processing the original electrical signal.
10. 10. The system of claim 9, wherein the photo-generated electrical signal corresponds to at least one of: based on the low pass filtering or integral conversion performed on the original electrical signal, Formed based on the processing of the raw electrical signal generated by the at least one receiver during one revolution of the rotor, Based on the raw electrical signal processing generated by the at least one receiver in a state in which the communication unit is at the nominal data transmission rate, A node before an amplifying circuit or a judging circuit in the signal conditioning circuit, or Monotonically corresponding to the optical signal collected by the at least one receiver.
11. 11. The system of claim 9, wherein the at least one receiver comprises a plurality of receivers, the photogenerated electrical signal being formed based on processing of a plurality of raw electrical signals generated by the plurality of receivers.
12. 12. The system of claim 1, wherein the at least one emitter comprises a plurality of emitters that are equiangularly or non-equiangularly arranged about a rotational centerline of the rotor.
13. 13. The system of claim 12, wherein two adjacent emitters of the plurality of emitters have an overlap region therebetween, wherein the optical signals from the two adjacent emitters overlap in the overlap region to form an overlapped optical signal, and wherein the generated optical signal comprises an electrical signal converted by the at least one receiver based on the overlapped optical signal.
14. 14. The system of claim 1, wherein the stator comprises a first plate having a first surface and the rotor comprises a second plate having a second surface, the first surface being opposite the second surface, the at least one transmitter being disposed on one of the first surface and the second surface, the at least one receiver being disposed on the other of the first surface and the second surface.
15. 15. The system of claim 1, wherein one of the stator and the rotor is implemented as an inner sleeve, the other of the stator and the rotor is implemented as an outer sleeve, the inner sleeve is disposed within the outer sleeve, the at least one transmitter is disposed on one of an outer circumferential surface of the inner sleeve or an inner circumferential surface of the outer sleeve, and the at least one receiver is disposed on the other of the outer circumferential surface and the inner circumferential surface.
16. 16. The system of claim 1, further comprising a housing, wherein the stator, the rotor, and the communication unit are all disposed within the housing.
17. 17. The system of claim 1, further comprising: a detector configured to determine whether the first index is within the predetermined index range, and And a prompter configured to perform a prompting operation in response to the first indicator being outside the predetermined indicator range.
18. 18. An analysis method for a non-contact slip ring optical communication system, comprising: Obtaining an optical generated electrical signal from the non-contact slip ring optical communication system, wherein the non-contact slip ring optical communication system comprises a stator, a rotor, and a communication unit defining a free space between the stator and the rotor, the communication unit comprising at least one transmitter disposed on one of the stator and the rotor and at least one receiver disposed on the other of the stator and the rotor, the at least one transmitter configured to convert a driving electrical signal into an optical signal and transmit the optical signal to the free space, the at least one receiver configured to collect the optical signal from the free space and derive an optical generated electrical signal based on the optical signal to form a free space optical communication link between the at least one transmitter and the at least one receiver; Determining a first index of the photo-generated electrical signal based on a ratio between a fluctuation range and an average value of signal intensities of the photo-generated electrical signal, the first index indicating a degree of stability of the photo-generated electrical signal during the rotor non-contact slip ring and the fluctuation range indicating a difference between a maximum signal intensity and a minimum signal intensity of the photo-generated electrical signal, and And generating a first detection result in response to the first index being in a preset index range, wherein the first detection result indicates that the layout scheme of the non-contact slip ring optical communication system is in a qualified state, and the preset index range is related to the rated data transmission rate of the communication unit.
19. 19. The method as recited in claim 18, further comprising: Acquiring rated data transmission rate of the non-contact slip ring optical communication system, and The topology scheme of the contactless slip ring optical communication system is determined based on the nominal data transmission rate.
20. 20. The method as recited in claim 18, further comprising: and generating a second detection result in response to the first index falling outside the preset index range, wherein the second detection result indicates that the layout scheme is in a disqualified state.

Description

Non-contact slip ring optical communication system and analysis method Technical Field Example embodiments of the present disclosure relate generally to the field of communications technology, and in particular, relate to a contactless slip ring optical communications system, an analysis method, an apparatus, a device, a computer-readable storage medium, and a computer program product for a contactless slip ring optical communications system. Background The non-contact slip ring optical communication system is used for data transmission between the fixed component and the rotating component. Compared with contact type data transmission equipment such as conductive slip rings, the non-contact slip ring optical communication system has the advantages of no abrasion, strong electromagnetic interference resistance, high data transmission rate and the like. The non-contact slip ring optical communication system can be applied to various application scenes such as a rotary table, medical equipment, a robot, a generator, a rotary joint and the like. Conventional contactless slip ring optical communication systems typically include a plurality of transmitters that may be arranged around the rotational centerline of the rotor. By increasing the number of emitters, the uniformity of the optical signal can be improved and the occurrence of dead zones can be avoided. However, as the number of transmitters increases, the power consumption, heat generation, and cost of the non-contact slip ring optical communication system also increase. Therefore, how to reduce the number of transmitters and/or receivers based on meeting the data transmission rate requirements becomes a concern. Disclosure of Invention In a first aspect of the present disclosure, a non-contact slip ring optical communication system is provided. The system includes a stator and a rotor configured to be rotatable relative to the stator and defining a free space therebetween, and a communication unit including at least one transmitter disposed on one of the stator and the rotor and at least one receiver disposed on the other of the stator and the rotor, the at least one transmitter configured to convert a driving electrical signal into an optical signal and transmit the optical signal to the free space, the at least one receiver configured to collect the optical signal from the free space and obtain the optical generated electrical signal based on the optical signal to form an optical communication link in the free space between the at least one transmitter and the at least one receiver, wherein a first indicator of the optical generated electrical signal is within a predetermined indicator range, the first indicator indicating a degree of stability of the optical generated electrical signal during rotation of the rotor, the first indicator being determined based on a ratio between a fluctuation range of a signal strength of the optical generated electrical signal and a minimum signal strength, the fluctuation range indicating a difference between the maximum signal strength and the minimum signal strength of the optical generated electrical signal, and the predetermined indicator range being related to a rated data transmission rate of the communication unit. In a second aspect of the present disclosure, an analysis method for a non-contact slip ring optical communication system is provided. The method includes obtaining an optical generated electrical signal from a non-contact slip ring optical communication system, wherein the non-contact slip ring optical communication system includes a stator, a rotor, and a communication unit defining a free space between the stator and the rotor, the communication unit including at least one transmitter disposed on one of the stator and the rotor and at least one receiver disposed on the other of the stator and the rotor, the at least one transmitter configured to convert the driving electrical signal into an optical signal and transmit the optical signal to the free space, the at least one receiver configured to collect the optical signal from the free space and obtain the optical generated electrical signal based on the optical signal to form an optical communication link in the free space between the at least one transmitter and the at least one receiver, determining a first indicator of the optical generated electrical signal based on a ratio between a fluctuation range and an average value of signal strengths of the optical generated electrical signal, the first indicator indicating a degree of stability of the optical generated electrical signal during rotation of the rotor and the fluctuation range indicating a difference between a maximum signal strength and a minimum signal strength of the optical generated electrical signal, and generating a first indicator in response to the first indicator being within a predetermined range, detecting result, the first indicator being a predetermined data transmission ra