CN110711756B - Optical antenna dustproof mechanism for laser communication - Google Patents
Optical antenna dustproof mechanism for laser communication Download PDFInfo
- Publication number
- CN110711756B CN110711756B CN201910910571.1A CN201910910571A CN110711756B CN 110711756 B CN110711756 B CN 110711756B CN 201910910571 A CN201910910571 A CN 201910910571A CN 110711756 B CN110711756 B CN 110711756B
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- dustproof
- light shield
- optical antenna
- component
- assembly
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- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 238000004891 communication Methods 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000004677 Nylon Substances 0.000 claims abstract description 12
- 229920001778 nylon Polymers 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 6
- 231100000719 pollutant Toxicity 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
An optical antenna dustproof mechanism for laser communication is applied to a laser communication optical transceiver, and in order to effectively prevent external impurities from invading an optical antenna of a laser communication system during satellite transmission, one end of a dustproof component is connected with a rotating shaft, and the dustproof component is connected with a pin hole at one end of a positioning component; the other end of the positioning component is fixedly connected with the mounting substrate of the optical antenna; the rotating shaft is fixedly connected with the mounting substrate, a torsion spring is arranged on the rotating shaft, one end of the nylon buffer piece is fixedly connected with the mounting substrate, the optical antenna is fixed on the mounting substrate through the turntable, one end of the light shield is arranged at the front end of the optical antenna, the other end of the light shield is designed into an arc shape along the rotation direction of the pitching axis of the turntable, and the arc center of the light shield is overlapped with the rotation center of the turntable; when the satellite is transmitted, the turntable is fixed at the locking position and the dust cover is positioned at the dust-proof position, and at the moment, the dust-proof assembly is positioned in front of the light shield, so that the light-transmitting aperture of the light shield is completely covered, and pollutants can be prevented from entering the optical antenna at the rear end of the light shield.
Description
Technical Field
The invention is applied to a laser communication optical transceiver, and relates to an optical antenna dustproof mechanism for laser communication.
Background
With the development of space information acquisition and sensing technology, the amount of information required to be transmitted by a satellite grows exponentially, and laser communication has the advantages of high communication rate, large information capacity and the like, and becomes an important satellite communication means. The laser communication optical transceiver is used as a core unit of a space laser communication technology, and the optical performance of the laser communication optical transceiver directly influences the laser communication capability. The laser communication optical transceiver is generally arranged outside a satellite body, an optical window of a main optical antenna is open, a rocket fairing is separated in the launching process, and generated pollutants such as scraps easily enter the optical antenna and are attached to the surface of an optical lens. When the laser is reflected, the laser is affected by the attached pollutant, after the backward reflection generated by the laser emitted by the own party is directly reflected back to the optical system, the laser is received by the own receiving system together with the communication laser emitted by the other party, which leads to the reduction of the isolation of the optical system of the laser communication terminal, causes the reduction of the signal-to-noise ratio of the communication light emitted by the other party received by the receiving system, causes the reduction of the communication performance and even seriously affects the service life of the system. In order to improve the communication efficiency of a space laser communication system and ensure the isolation of an optical system, the invention provides an optical antenna dustproof mechanism for laser communication, which is necessary to effectively avoid the pollution of an optical antenna in the transmitting process according to the working characteristics of a laser communication optical transceiver.
Disclosure of Invention
The invention provides an optical antenna dustproof mechanism for laser communication, which aims to effectively prevent external impurities from invading an optical antenna of a laser communication system during satellite transmission.
The technical scheme of the invention is as follows:
the dustproof mechanism of the optical antenna for laser communication is characterized by comprising a dustproof assembly, a positioning assembly, a rotating shaft, a torsion spring, a nylon buffer piece and a light shield; one end of the dustproof component is connected with the rotating shaft, and the dustproof component can rotate around the rotating shaft; the dustproof assembly is connected with one end of the positioning assembly through a pin hole; the other end of the positioning component is fixedly connected with the mounting substrate of the optical antenna; the rotary shaft is fixedly connected with the mounting substrate, a torsion spring is arranged on the rotary shaft, when the dustproof component is positioned at the dustproof position, the torsion spring has restoring torsion, and when the dustproof component is positioned at the collecting position, the restoring force of the torsion spring is zero; one end of the nylon buffer piece is fixedly connected with the mounting substrate, when the dust cover is in a storage state, the other end of the nylon buffer piece just contacts with the dust-proof component, so that the dust-proof component is positioned on one hand, and meanwhile, a buffer effect is achieved when the dust-proof component is stored; the optical antenna is fixed on the mounting substrate through the turntable, and the turntable can drive the optical antenna to rotate in two dimensions; one end of the light shield is arranged at the front end of the optical antenna, the other end of the light shield is designed into an arc shape along the rotation direction of the pitching axis of the turntable, and the arc center of the light shield is overlapped with the rotation center of the turntable; the dustproof component is in an arc shape, and the arc parameters of the dustproof component are consistent with those of the light shield; when the satellite is transmitted, the turntable is fixed at the locking position and the dust cover is positioned at the dust-proof position, and at the moment, the dust-proof assembly is positioned in front of the light shield, so that the light-transmitting aperture of the light shield is completely covered, and pollutants can be prevented from entering the optical antenna at the rear end of the light shield.
The beneficial effects of the invention are as follows:
1. the invention adopts the dustproof component to protect the optical system in the satellite transmitting stage, and can effectively avoid the pollution of the optical antenna in the satellite transmitting process.
2. The dustproof assembly and the light shield are both in an arc-shaped design, the dustproof buckle plate of the light shield can completely cover the dustproof cover, and the dustproof assembly has a rubber pad, so that a better sealing effect can be achieved.
3. The positioning component can realize automatic positioning through the interaction among the spring, the memory alloy wire and the heating component.
4. The nylon buffer piece not only can prevent the dust-proof component from rigidly colliding with the mounting substrate, but also can play a role in positioning the dust-proof component, and is favorable for accurate matching of pin holes at the storage position.
5. After satellite emission, the dustproof mechanism is retracted, and the system outer envelope size is not additionally increased while the normal operation of the laser communication terminal is not influenced. The dustproof mechanism is simple and portable in structure, easy to process and widely applicable to optical antenna dustproof.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an optical antenna dust-proof mechanism for laser communication. The figures are taken as illustrative abstract drawings.
Fig. 2 is a schematic structural diagram of the dustproof assembly according to the invention.
FIG. 3 is a schematic view of the structure of the positioning assembly according to the present invention.
Fig. 4 is a schematic diagram of the structure of the light shield according to the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawings:
an optical antenna dustproof mechanism for laser communication comprises a dustproof assembly 1, a positioning assembly 2, a rotating shaft 3, a torsion spring 4, a nylon buffer piece 5 and a light shield 6. One end of the dustproof component 1 is connected with the rotating shaft 3, and the dustproof component 1 can rotate around the rotating shaft 3. The dustproof assembly 1 is connected with one end of the positioning assembly 2 through a pin hole. The other end of the positioning component 2 is fixedly connected with a mounting substrate 9 of the optical antenna. The rotation axis 3 links firmly with mounting substrate 9, installs torsional spring 4 on the rotation axis 3, and when dustproof subassembly 1 was in dustproof position, torsional spring 4 had the restoring torsion, and when dustproof subassembly 1 was in the collection position, torsional spring 4 restoring force was zero. One end of the nylon buffer piece 5 is fixedly connected with the mounting substrate 9, when the dust cover 1 is in a storage state, the other end of the nylon buffer piece 5 just contacts with the dust-proof component 1, so that the dust-proof component 1 is positioned on one hand, and meanwhile, a buffer effect is achieved when the dust-proof component 1 is stored.
The optical antenna 7 is fixed on the mounting substrate 9 through the turntable 8, and the turntable 8 can drive the optical antenna 7 to rotate in two dimensions.
One end of the light shield 6 is arranged at the front end of the optical antenna 7, and the other end of the light shield is designed into an arc shape along the rotation direction of the pitching axis of the turntable 8, and the arc center of the light shield is overlapped with the rotation center of the turntable 8. The dust-proof component 1 is also designed into a circular arc shape, and the circular arc parameters of the dust-proof component are consistent with those of the light shield 6. When the satellite is transmitted, the turntable 8 is fixed to the locking position and is fixed, the dust cover 1 is positioned at the dust-proof position, and the dust-proof assembly 1 is positioned in front of the light shield 6, so that the light-transmitting aperture of the light shield 6 is completely covered, and pollutants can be prevented from entering the optical antenna 7 at the rear end of the light shield 6.
The dustproof assembly 1 consists of a cover plate 1-1, a rubber pad 1-2, a buckle plate 1-3, a supporting rod 1-4, a dustproof positioning pin hole 1-5, a rotating shaft 1-6 and a locking positioning pin hole 1-7; the pinch plate 1-3 is arranged at the lower half part of the cover plate 1-1 and is of an integrated structure; the rubber pad 1-2 is arranged at the upper edge of the pinch plate 1-3; the support rod 1-4 is L-shaped, and one end is fixedly connected with the cover plate 1-1. The support rod 1-4 is provided with a rotary shaft 1-6, and the rotary shaft 1-6 is sleeved on the rotary shaft 3 and can rotate around the rotary shaft 3. The support rod 1-4 is provided with a dustproof positioning pin hole 1-5 and a locking positioning pin hole 1-7 respectively, the two holes are of conical structures, and when the dustproof cover 1 is positioned at a dustproof position and a storage position respectively, the positions of the dustproof positioning pin hole 1-5 and the locking positioning pin hole 1-7 are the same, and the dustproof positioning pin hole and the locking positioning pin hole can be matched with the pin body 2-2.
The positioning component 2 consists of a supporting plate 2-1, a pin body 2-2, a spring 2-3, a memory alloy wire 2-4 and a heating component 2-5. The supporting plate 2-1 is fixedly connected with the mounting substrate 9, one end of the pin body 2-2 is designed into a conical structure, and the pin body can slide back and forth in the positioning hole of the supporting plate 2-1. The positioning hole of the supporting plate 2-1 is designed into a stepped hole type, and plays a role in guiding the pin body 2-2. One end of the spring 2-3 is fixedly connected with the pin body 2-2, and the other end is fixedly connected with the supporting plate 2-1 to provide forward restoring force for the pin body 2-2. One end of the memory alloy wire 2-4 is fixedly connected with the pin body 2-2, the other end of the memory alloy wire is fixedly connected with the supporting plate 2-1, the heating component 2-5 is coated outside the memory alloy wire 2-4, and after the heating component 2-5 heats the memory alloy wire 2-4, the memory alloy wire 2-4 contracts to pull the pin body 2-2 to slide backwards; after the heating component 2-5 stops heating, the temperature of the memory alloy wire 2-4 is reduced, and the pin body 2-2 slides forwards under the pushing of the spring 2-3 to return to the locking position.
The light shield 6 consists of a dustproof buckle plate 6-1 and a shield body 6-2, and the dustproof buckle plate 6-1 and the shield body 6-2 are of an integrated structure. The dustproof buckle plate 6-1 of the light shield 6 and the buckle plate 1-3 of the dustproof assembly 1 can be matched with each other, the width of the dustproof buckle plate 6-1 is equal to the total width of the cover plate 1-1 and the buckle plate 1-3, a rubber pad 1-2 is arranged between the edge connecting gaps of the cover plate 1-1 and the dustproof buckle plate 6-1, and under the action of the rubber pad 1-2 of the dustproof assembly 1, a dustproof state with excellent sealing performance can be formed, so that impurities are effectively prevented from entering the light shield 6. The cover body 6-2 of the light shield 6 and the cover plate 1-1 of the dustproof assembly 1 are designed to have the same arc parameters.
The system comprises the following specific implementation steps of:
step 1: before satellite emission, the dustproof assembly 1 is positioned at a dustproof position, the turntable 8 is positioned at a locking position, the cover plate 1-1 and the buckle plate 1-3 of the dustproof assembly 1 are mutually matched with the dustproof buckle plate 6-1 of the light shield 6 to play a dustproof role, and the pin body 2-2 in the positioning assembly 2 is matched with the taper hole of the dustproof positioning pin hole 1-5 in the dustproof assembly 1 to keep the dustproof assembly 1 at the dustproof position;
step 2: after the satellite enters the orbit, the dustproof requirement is not met, the turntable 8 is unlocked to drive the light shield 6 to rotate anticlockwise around the pitching direction, and after the light shield 6 rotates out of the structural work envelope space required by the dust-proof assembly 1 for storage, the turntable 8 stops rotating and keeps still;
step 3: the heating component 2-5 in the positioning component 2 is electrified to heat the memory alloy wire 2-4, the memory alloy wire 2-4 is heated to shrink to drive the pin body 2-2 to move backwards, and the pin body 2-2 is disengaged from the dustproof positioning pin hole 1-5 of the dustproof component 1;
step 4: the dustproof component 1 rotates anticlockwise around the rotating shaft 3 under the action of the restoring force of the torsion spring 4, and stops at the storage position after being buffered and positioned by the nylon buffer piece 5;
step 5: the heating component 2-5 in the positioning component 2 stops heating, the memory alloy wire 2-4 stretches after the temperature is reduced, and the pin body 2-2 slides forwards under the pushing of the restoring force of the spring 2-3, so that the pin body 2-2 returns to the locking position;
step 6: the pin body 2-2 in the positioning assembly 2 is inserted into the locking positioning pin hole 1-7 of the dust cover 1 to form pin hole matching with the pin hole, so that the dust cover 1 is locked, and the dust cover is ensured to be motionless in the storage position;
at this time, the turntable 8 rotates arbitrarily within the operating range, and operates.
Claims (3)
1. The optical antenna dustproof mechanism for laser communication is characterized by comprising a dustproof assembly (1), a positioning assembly (2), a rotating shaft (3), a torsion spring (4), a nylon buffer piece (5) and a light shield (6); one end of the dustproof component (1) is connected with the rotating shaft (3), and the dustproof component (1) can rotate around the rotating shaft (3); the dustproof assembly (1) is connected with one end of the positioning assembly (2) through a pin hole; the other end of the positioning component (2) is fixedly connected with a mounting substrate (9) of the optical antenna; the rotary shaft (3) is fixedly connected with the mounting substrate (9), the torsional spring (4) is arranged on the rotary shaft (3), when the dustproof component (1) is positioned at the dustproof position, the torsional spring (4) has a restoring torsion, and when the dustproof component (1) is positioned at the collecting position, the restoring force of the torsional spring (4) is zero; one end of the nylon buffer piece (5) is fixedly connected with the mounting substrate (9), when the dustproof assembly (1) is in a collection state, the other end of the nylon buffer piece (5) is just contacted with the dustproof assembly (1), on one hand, the dustproof assembly (1) is positioned, and meanwhile, a buffer effect is achieved when the dustproof assembly (1) is collected;
the optical antenna (7) is fixed on the mounting substrate (9) through the turntable (8), and the turntable (8) can drive the optical antenna (7) to rotate in two dimensions;
one end of the light shield (6) is arranged at the front end of the optical antenna (7), the other end of the light shield is designed into an arc shape along the rotation direction of the pitching axis of the turntable (8), and the arc center of the light shield is overlapped with the rotation center of the turntable (8); the dustproof component (1) is in an arc shape, and the arc parameters of the dustproof component are consistent with those of the light shield (6); when the satellite is transmitted, the turntable (8) is fixed at the locking position, the dustproof assembly (1) is positioned at the dustproof position, and at the moment, the dustproof assembly (1) is positioned in front of the light shield (6) to completely cover the light transmission aperture of the light shield (6), so that pollutants can be prevented from entering the optical antenna (7) at the rear end of the light shield (6);
the dustproof assembly (1) consists of a cover plate (1-1), a rubber pad (1-2), a buckle plate (1-3), a supporting rod (1-4), a dustproof positioning pin hole (1-5), a rotating shaft (1-6) and a locking positioning pin hole (1-7); the pinch plate (1-3) is arranged at the lower half part of the cover plate (1-1) and is of an integrated structure; the rubber pad (1-2) is arranged on the upper edge of the pinch plate (1-3); the support rod (1-4) is of an L-shaped structure, and one end of the support rod is fixedly connected with the cover plate (1-1); the support rod (1-4) is provided with a rotary shaft (1-6), and the rotary shaft (1-6) is sleeved on the rotary shaft (3) and can rotate around the rotary shaft (3); a dustproof positioning pin hole (1-5) and a locking positioning pin hole (1-7) are respectively arranged on the supporting rod (1-4).
2. An optical antenna dust prevention mechanism for laser communication according to claim 1, wherein,
the positioning component (2) consists of a supporting plate (2-1), a pin body (2-2), a spring (2-3), a memory alloy wire (2-4) and a heating component (2-5); the support plate (2-1) is fixedly connected with the mounting substrate (9), one end of the pin body (2-2) is designed into a conical structure, the pin body can slide back and forth in the positioning hole of the support plate (2-1), and when the dustproof assembly (1) is respectively positioned at a dustproof position and a storage position, the positions of the dustproof positioning pin hole (1-5) and the locking positioning pin hole (1-7) are the same, and the two positioning pin holes are of conical structures and can be matched with the pin body (2-2); the positioning hole of the supporting plate (2-1) is designed into a stepped hole type, and plays a role in guiding the pin body (2-2); one end of the spring (2-3) is fixedly connected with the pin body (2-2), and the other end of the spring is fixedly connected with the supporting plate (2-1) to provide forward restoring force for the pin body (2-2); one end of the memory alloy wire (2-4) is fixedly connected with the pin body (2-2), the other end of the memory alloy wire is fixedly connected with the supporting plate (2-1), the memory alloy wire (2-4) is externally coated with the heating component (2-5), and after the heating component (2-5) heats the memory alloy wire (2-4), the memory alloy wire (2-4) contracts to pull the pin body (2-2) to slide backwards; after the heating component (2-5) stops heating, the temperature of the memory alloy wire (2-4) is reduced, and the pin body (2-2) slides forwards under the pushing of the spring (2-3) to return to the locking position.
3. The optical antenna dustproof mechanism for laser communication according to claim 2, wherein the light shield (6) is composed of a dustproof buckle plate (6-1) and a shield body (6-2), the dustproof buckle plate (6-1) and the shield body (6-2) are of an integrated structure, the dustproof buckle plate (6-1) and the buckle plate (1-3) of the dustproof assembly (1) can be mutually matched, the width of the dustproof buckle plate (6-1) is equal to the total width of the cover plate (1-1) and the buckle plate (1-3), and a rubber pad (1-2) is arranged between the edge connecting gaps of the cover plate (1-1) and the dustproof buckle plate (6-1), so that impurities are effectively prevented from entering the light shield (6); the shape of the cover body (6-2) is consistent with the arc parameters of the cover plate (1-1) of the dustproof assembly (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910571.1A CN110711756B (en) | 2019-09-25 | 2019-09-25 | Optical antenna dustproof mechanism for laser communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910571.1A CN110711756B (en) | 2019-09-25 | 2019-09-25 | Optical antenna dustproof mechanism for laser communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110711756A CN110711756A (en) | 2020-01-21 |
| CN110711756B true CN110711756B (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910571.1A Active CN110711756B (en) | 2019-09-25 | 2019-09-25 | Optical antenna dustproof mechanism for laser communication |
Country Status (1)
| Country | Link |
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| CN (1) | CN110711756B (en) |
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| CN110711756A (en) | 2020-01-21 |
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