Wireless optical communication structure for duplex communication

Abstract

The utility model discloses a wireless optical communication structure for duplex communication, and belongs to the technical field of optical communication. A wireless optical communication structure for duplex communication comprises a transmitting end and a receiving end. The transmitting end is provided with a first light path transmission channel, and the first light path transmission channel is sequentially provided with a laser reflecting mirror, a laser dichroscope and a collimating lens which are used for intercepting the first light path transmission channel from inside to outside; the transmitting end is provided with a photoelectric detector and a laser which correspond to the mirror surfaces, facing the first light path transmission channel, of the laser reflecting mirror and the laser dichroscope in position respectively; the receiving end is provided with a second light path transmission channel, and the second light path transmission channel is sequentially provided with a laser reflecting mirror, a laser dichroscope and a collimating lens which are used for intercepting the second light path transmission channel from inside to outside; and the receiving end is provided with a photoelectric detector and a laser which correspond to the mirror surfaces, facing the second light path transmission channel, of the laser reflecting mirror and the laser dichroscope in position.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless optical communication, in particular to a wireless optical communication structure for duplex communication. Background Art

[0002] The rotors of motors, wind turbines, gas turbines and other equipment usually work at high speed for a long time, and it is easy to have faults such as overheating, which seriously threatens the safe operation of the unit. In order to ensure the safe operation of these rotating parts, the monitoring of their status is extremely important for fault diagnosis and prediction. Traditional methods for monitoring the status of rotating parts mainly rely on wired data transmission systems to transmit data such as temperature collected by sensors to the host computer. Optical communication is a data transmission method that can overcome electromagnetic interference. For optical communication of rotating equipment, researchers have proposed methods such as optical fiber slip rings. However, the slip ring system has some limitations. As the use time increases, the stability will be greatly reduced, and the risk of cable wear and breakage will increase.

[0003] Therefore, in order to solve these problems of traditional wired transmission systems, the applicant has proposed Chinese patent document 202420152233.2 - a rotor dual-channel wireless optical communication structure, wherein a laser is provided at the transmitting end and a photodetector is provided at the receiving end. However, in this structural design, the transmitting end can only transmit signals but not receive signals, and the receiving end can only receive signals but not transmit signals. Utility Model Content

[0004] The utility model aims to provide a wireless optical communication structure for duplex communication, in which both the transmitting end and the receiving end can receive signals and send signals, and the laser wavelengths of the transmitting and receiving ends are different, so duplex communication can be realized.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A wireless optical communication structure for duplex communication, comprising a transmitting end and a receiving end;

[0007] The transmitting end is provided with a first optical transmission channel, and the first optical transmission channel is provided with a laser reflector, a laser dichroic mirror, and a collimating lens from the inside to the outside to intercept the first optical transmission channel; the transmitting end is provided with positions for placing a laser and a photodetector, and the two are coupled to the first optical transmission channel after the laser reflector and the dichroic mirror respectively; the laser dichroic mirror and the laser reflector are both tilted, and the tilt angle makes them form an angle of 45° with the first laser optical path;

[0008] The receiving end is provided with a second optical transmission channel, and the second optical transmission channel is provided with a laser reflector, a laser dichroic mirror, and a collimating lens from the inside to the outside to intercept the second optical transmission channel; the transmitting end is provided with positions for placing a photodetector and a laser, and the two are coupled to the second optical transmission channel after the laser reflector and the dichroic mirror respectively; the laser dichroic mirror and the laser reflector are both tilted, and the tilt angle makes them form a 45° angle with the laser optical path. As a preferred technical solution, both the transmitting end and the receiving end are provided with mounting ear plates.

[0009] As a preferred technical solution, the wavelength of the laser at the transmitting end is 1310 nm, and the wavelength of the laser at the receiving end is 1550 nm.

[0010] As a preferred technical solution, the parameters of the laser dichroic mirror at the transmitting end are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm; the parameters of the laser dichroic mirror at the receiving end are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, since both the transmitting end and the receiving end include a laser, a detector and corresponding optical devices, the transmitting end and the receiving end can both receive signals and send signals, thereby realizing duplex communication.

[0013] In the utility model, the wireless optical communication structure has the advantages of compact structure, stability and good optical transmission characteristics, and can effectively realize the state monitoring and prediction of rotating parts, thereby improving the safety, reliability and life of rotating equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Among them, the figure numbers are as follows: 1-transmitting end, 2-first optical path transmission channel, 3-laser reflector, 4-laser dichroic mirror, 5-collimating lens, 6-laser, 7-photodetector, 8-receiving end. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0017] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.

[0018] Example

[0019] like Figure 1 As shown, a wireless optical communication structure for duplex communication includes a receiving end 8 and a transmitting end 1.

[0020] The transmitting end 1 comprises a cylindrical transmitting end housing, and a mounting ear plate is coaxially arranged on the end surface of the transmitting end housing facing the receiving end 8, and the mounting ear plate is provided with four screw holes evenly distributed around the axis for mounting the transmitting end 1;

[0021] The transmitting end housing is coaxially provided with a first optical path transmission channel 2 , and the transmitting end housing is radially provided with a first mounting hole, a second mounting hole, a third mounting hole, and a fourth mounting hole which are connected with the first optical path transmission channel 2 .

[0022] The first mounting hole and the second mounting hole are circular holes, and a laser 6 and a photoelectric detector 7 are respectively mounted in the first mounting hole and the second mounting hole.

[0023] The third mounting hole and the fourth mounting hole are square holes, and the third mounting hole and the fourth mounting hole are installed with a laser dichroic mirror 4 and a laser reflector 3. The laser dichroic mirror 4 and the laser reflector 3 intercept the first optical path transmission channel 2 at a setting requirement of 45° with the laser optical path; wherein the laser dichroic mirror 4 is located between the laser reflector 3 and the mounting ear plate.

[0024] In the transmitting end 1, the laser 6 and the photodetector 7 correspond to the mirror positions of the laser reflector 3 and the laser dichroic mirror 4 facing the first optical path transmission channel 2. The first optical path transmission channel 2 of the transmitting end 1 is also provided with a collimating lens 5 for expanding the light of the first optical path transmission channel 2; the laser reflector 3, the laser dichroic mirror 4, and the collimating lens 5 are sequentially arranged in the first optical path transmission channel 2 from the inside to the outside.

[0025] The receiving end 8 comprises a cylindrical receiving end housing, and a mounting ear plate is coaxially arranged on the end surface of the receiving end housing facing the transmitting end 1, and the mounting ear plate is provided with four screw holes evenly distributed around the axis for mounting the receiving end 8;

[0026] The receiving end shell is coaxially provided with a second optical path transmission channel, and the receiving end shell is radially provided with a fifth mounting hole, a sixth mounting hole, a seventh mounting hole, and an eighth mounting hole which are connected with the second optical path transmission channel.

[0027] The fifth mounting hole and the sixth mounting hole are circular holes, and a laser 6 and a photoelectric detector 7 are respectively mounted in the fifth mounting hole and the sixth mounting hole.

[0028] The seventh mounting hole and the eighth mounting hole are square holes, and the seventh mounting hole and the eighth mounting hole are installed with a laser dichroic mirror 4 and a laser reflector 3. The laser dichroic mirror 4 and the laser reflector 3 are arranged at a 45° angle with the laser optical path to intercept the second optical path transmission channel; wherein the laser dichroic mirror 4 is located between the laser reflector 3 and the mounting ear plate.

[0029] In the receiving end 8, the laser 6 and the photodetector 7 correspond to the mirror positions of the laser dichroic mirror 4 and the laser reflector 3 facing the second optical path transmission channel. The second optical path transmission channel of the receiving end 8 is also provided with a collimating lens 5 for expanding the light of the second optical path transmission channel; the laser reflector 3, the laser dichroic mirror 4, and the collimating lens 5 are sequentially arranged in the second optical path transmission channel from the inside to the outside.

[0030] The wavelength of the laser 6 at the transmitting end 1 is 1310 nm, and the wavelength of the laser 6 at the receiving end 8 is 1550 nm.

[0031] The parameters of the laser dichroic mirror 4 at the transmitting end 1 are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm; the parameters of the laser dichroic mirror 4 at the receiving end 8 are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm.

[0032] The working process of the utility model is as follows:

[0033] Transmitter 1: The state parameters of the rotating parts collected during work are collected by sensors, and then converted into TTL signals after being collected by the single-chip microcomputer. The TTL signal drives the 1310nm laser 6 to emit light through current control and is converted into an optical signal. The signal enters the first optical path transmission channel 2 and is emitted through the laser reflector 3, laser dichroic mirror 4 and collimating lens 5 of the transmitter 1.

[0034] The second optical transmission channel of the receiving end 8 receives the optical signal, and the optical signal enters the photodetector 7 after being reflected by the collimating lens 5, the laser dichroic mirror 4, and the laser reflector 3, and is converted into an electrical signal by the photodetector 7 for signal demodulation. After receiving the instruction of the host computer to retrieve the temperature information, the receiving end 8 transmits the state parameter information of the rotating component through the laser 6 on this side. The receiving end 8 emits a 1550nm laser, which enters the collimating lens 5 after being reflected by the dichroic mirror, is collimated by the collimating lens 5 of the transmitting end 1, and is reflected by the dichroic mirror into the photodetector 7. The temperature information can be obtained after decoding.

[0035] In this embodiment, since both the transmitting end 1 and the receiving end 8 include a laser 6, a detector and corresponding optical devices, the transmitting end 1 and the receiving end 8 can both receive signals and send signals, thereby realizing duplex communication. When used to measure rotating parts, the transmitting end 1 is installed on the rotor and the receiving end 8 is installed on the stator.

[0036] In this embodiment, the wireless optical communication structure has the advantages of compact structure, stability, and good optical transmission characteristics, and can effectively realize the state monitoring and prediction of rotating parts, thereby improving the safety, reliability, and life of rotating equipment.

[0037] It is worth noting that, based on the above structural design, in order to solve the same technical problem, even if some insubstantial improvements are made on the present invention, they also fall within the protection scope of the present invention.

Claims

1. A wireless optical communication structure for duplex communication, characterized in that: Includes a transmitter and a receiver; The transmitting end is provided with a first optical transmission channel, and the first optical transmission channel is provided with a laser reflector, a laser dichroic mirror, and a collimating lens from the inside to the outside to intercept the first optical transmission channel; the transmitting end is provided with positions for placing a laser and a photoelectric detector, and the laser and the photoelectric detector are coupled to the first optical transmission channel after passing through the laser reflector and the dichroic mirror respectively; the laser dichroic mirror and the laser reflector are both tilted, and the tilt angle makes them form an angle of 45° with the first laser optical path; The receiving end is provided with a second optical path transmission channel, and the second optical path transmission channel is provided with a laser reflector, a laser dichroic mirror, and a collimating lens from the inside to the outside to intercept the second optical path transmission channel; the transmitting end is provided with positions for placing a photoelectric detector and a laser, and the photoelectric detector and the laser are coupled to the second optical path transmission channel after the laser reflector and the dichroic mirror respectively; the laser dichroic mirror and the laser reflector are both tilted, and the tilt angle makes them form an angle of 45° with the laser optical path.

2. A wireless optical communication structure for duplex communication according to claim 1, characterized in that: Both the transmitter and receiver are equipped with mounting ears.

3. A wireless optical communication structure for duplex communication according to claim 1, characterized in that: The wavelength of the laser at the transmitting end is 1310nm, and the wavelength of the laser at the receiving end is 1550nm.

4. A wireless optical communication structure for duplex communication according to claim 3, characterized in that: The parameters of the laser dichroic mirror at the transmitting end are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm; the parameters of the laser dichroic mirror at the receiving end are a transmission wavelength of 1310 nm and a reflection wavelength of 1550 nm.

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