CN110661078A - Vehicle-ground high-speed laser communication device - Google Patents
Vehicle-ground high-speed laser communication device Download PDFInfo
- Publication number
- CN110661078A CN110661078A CN201910787287.XA CN201910787287A CN110661078A CN 110661078 A CN110661078 A CN 110661078A CN 201910787287 A CN201910787287 A CN 201910787287A CN 110661078 A CN110661078 A CN 110661078A
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- pitching
- azimuth
- antenna
- driving unit
- axis
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3216—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used where the road or rail vehicle is only used as transportation means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Optical Communication System (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a vehicle-ground high-speed laser communication device which comprises a two-axis stable platform and a communication antenna, wherein the two-axis stable platform comprises an azimuth axis system and a pitching axis system, electronic processing modules such as a signal processing unit, a power supply board, an optical transceiver and the like are sequentially arranged in an antenna seat, the communication antenna comprises a spherical rotating body and a support arranged in the spherical rotating body, a laser, an information source laser, a beacon emitter and a beacon receiver are sequentially arranged on the support, a pitching driving unit is arranged in the pitching ball, and the signal processing unit, the pitching driving unit and the azimuth driving unit form a servo system so as to realize the stable control of the vehicle-ground high-speed laser communication device. The invention is used for large-capacity data dump between the train and the ground, has large-capacity information transmission capability, supports the requirement of free stop of the train in a certain range by the servo follow-up system, and can overcome the influence of vehicle shaking on the system.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a train-ground high-speed laser communication device which is mainly used for dumping large-capacity data between a train and the ground.
Background
The existing train-ground communication technology applied to mobile carriers such as high-speed rails, subways and motor trains has the defect of low transmission rate, so that various data of a wireless coverage train cannot be fed back to a ground data terminal in time.
The existing manual exchange efficiency through a mobile storage medium is too low, and a rapid and automatic data exchange technology is urgently needed to realize non-stop dump and rapid exchange of train related data.
Disclosure of Invention
The invention aims to provide a vehicle-ground high-speed laser communication device which is suitable for Gb/s vehicle-ground all-optical communication technology aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-speed laser communication device of the train-ground, it is made up of two-axis stabilized platform and communication antenna, said two-axis stabilized platform and communication antenna are through the direct butt joint of the communication socket; the two-axis stable platform comprises an azimuth shafting consisting of an antenna pedestal, an antenna frame, a bearing and a bearing pressing ring, and further comprises a pitching shafting consisting of the antenna frame, a pitching ball body, a pitching shaft, the bearing and the bearing pressing ring, wherein two coplanar shaft covers are arranged at two ends of the pitching shafting, a signal processing unit for completing wide area network or local area network service data conversion, a power supply board for completing conversion from vehicle-mounted direct current (110V) or ground alternating current (220V) to a communication terminal required working voltage, an optical terminal machine for completing the function of converting network signals into optical signals and other electronic processing modules are sequentially arranged in the antenna pedestal, the bottom of the antenna pedestal is protected by a lower cover plate, a mounting hole is formed in the lower cover plate and fixedly connected with the vehicle-mounted platform, and a socket group is arranged on the side surface of the antenna pedestal; the communication antenna comprises a spherical rotating body consisting of a pitching sphere, a rear cover, a front cover and protective glass, and a support arranged in the spherical rotating body, wherein a laser, an information source transmitting and receiving system, a beacon transmitting system and a beacon receiving system are sequentially arranged on the support, and optical axes of all optical systems can be conveniently leveled to realize communication and then are fixed on the pitching sphere; a pitching driving unit and a pitching pinion connected with the pitching driving unit are arranged in the pitching ball body, the pitching pinion is fixed on the inner wall of the pitching ball body, a pitching gearwheel meshed with the pitching pinion is fixed on the pitching shaft, pitching control is realized by driving the pitching gearwheel fixed on the pitching shaft, and the pitching driving unit rotates along with the pitching ball body; an azimuth driving unit and an azimuth large gear arranged on the azimuth driving unit are further arranged between the lower cover plate and the antenna pedestal, an azimuth small gear meshed with the azimuth large gear is fixed on the antenna pedestal, and azimuth control is achieved by driving the azimuth large gear; the signal processing unit, the pitching driving unit and the azimuth driving unit form a servo system, so that the stable control of the vehicle-ground high-speed laser communication device can be realized, and information transmission can be carried out.
According to the vehicle-ground high-speed laser communication device, the azimuth axis system and the pitching axis system are limited in rotation range through the limiting rods fixed on the side wall of the antenna frame, the pitching axis system is limited in the arc-shaped grooves in the corresponding positions of the side wall of the pitching sphere, and the limiting rods are used for limiting the rotation within a range of +/-10 degrees.
A high-speed laser communication device in car ground, its every single move drive unit and position drive unit all adopt the steering wheel as execute component, every single move pinion and position pinion be connected with the steering wheel respectively, the steering wheel use 1: the reduction gear of 4 improves the control accuracy of steering wheel, realizes the accurate control to communication antenna. The requirement on the precision of the steering engine is reduced.
The high-speed laser communication device for the train and the ground has the advantages that the signal source transmitting and receiving system, the beacon transmitting system and the beacon receiving system are distributed in a finished product shape, wherein the receiving system independently uses one piece of protective glass, and the beacon transmitting system and the beacon receiving system share the same piece of protective glass. Wherein two protective glass are arranged from top to bottom, are bonded on the front cover and are aligned with the corresponding optical system, so that light shielding is avoided.
The invention has the beneficial effects that:
the communication antenna is arranged in the two-axis stable platform, so that high-reliability broadband communication and large-capacity data dump between vehicles can be realized conveniently and quickly; and by adopting a modular design, various antenna combinations can be replaced according to requirements, so that different functions are realized.
The invention adopts the Gb/s vehicle-ground all-optical communication technology, and can realize the high-reliable broadband communication and the large-capacity data dump between vehicles and grounds by the communication antenna arranged in the two-axis stable platform.
The whole device has small volume, light weight and high reliability; the cable can resist severe environment and electromagnetic interference; safe and secret, convenient to erect and quick to open. The device is suitable for being mounted on moving carriers such as high-speed rails, subways and the like.
Drawings
FIG. 1 is a profile view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of a spacing mechanism of the present invention;
FIG. 4 is a schematic view of a pitch drive unit of the present invention;
fig. 5 is a schematic view of an azimuth drive unit of the present invention.
The figures are numbered: 1-two-axis stable platform, 101-pitching sphere, 102-pitching driving unit, 103-rear cover, 104-antenna frame, 105-pitching shafting, 106-shaft cover, 107-azimuth shafting, 108-socket set, 109-antenna base, 110-signal processing unit, 111-power panel, 112-azimuth gearwheel, 113-lower cover plate, 114-optical terminal, 115-azimuth driving unit, 116-protective glass, 117-front cover, 118-limiting rod, 119-pitching pinion, 120-pitching gearwheel, 121-pitching shaft, 122-azimuth pinion, 2-communication antenna, 201-laser, 202-support, 203-source transmitting and receiving system, 204-beacon transmitting system, 205-beacon receiving system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-2, the vehicle-ground high-speed laser communication device disclosed by the invention comprises two parts, namely a two-axis stable platform 1 and a communication antenna 2, wherein the two-axis stable platform 1 and the communication antenna 2 are directly butted through a socket in a communication way and then are fixed by 4 screws; the two-axis stable platform 1 comprises an antenna pedestal 109 with threads on the surface, an antenna frame 104 arranged above the antenna pedestal 109, and an azimuth axis system 107 consisting of a bearing and a bearing pressing ring; the device also comprises a pitching shaft system 105 consisting of an antenna frame 104 and a pitching ball body 101 arranged on the antenna frame 104 through a pitching shaft 121, a bearing and a bearing pressing ring, wherein two coplanar shaft covers 106 are arranged at two ends of the pitching shaft system 105.
The rotation range of the azimuth axis system 107 and the rotation range of the pitch axis system 105 are both limited by a limiting rod 118 fixed on the side wall of the antenna frame 104, the rotation range of the pitch axis system 105 is limited in an arc-shaped groove at a corresponding position of the side wall of the pitch sphere 101, and the rotation of the pitch axis system 105 is limited within a range of +/-10 degrees by the limiting rod 118, as shown in the attached drawings 3 and 4, the pitch driving unit 102 is arranged inside the pitch sphere 101 (the pitch driving unit 102 is conventionally designed outside the pitch sphere 101 and inside the side wall of the antenna frame 104) and rotates along with the sphere, the thickness of the side wall of the antenna frame 104 can be reduced to the maximum extent, and only two supporting lugs of the antenna frame 104 need to support and route wires, so that the.
The communication antenna 2 mainly comprises a bracket 202, a laser 201, an information source transmitting and receiving system 203, a beacon transmitting system 204 and a beacon receiving system 205 which are arranged on the bracket, optical axes of all lenses can be conveniently leveled to realize communication, and then the lenses are fixed on a pitching sphere 101, wherein the pitching sphere 101, a rear cover 103, a front cover 117 and protective glass 116 form a spherical rotating body, and the laser 201, the information source transmitting and receiving system 203, the beacon transmitting system 204 and the beacon receiving system 205 are arranged in the spherical rotating body through the bracket 202; the antenna pedestal 109 is internally and sequentially provided with electronic processing modules such as a signal processing unit 110, a power supply board 111, an optical transceiver 114 and the like twice, and the bottom of the electronic processing module is protected by a lower cover plate 113; the side surface is provided with a socket group 108 which is provided with two network ports for external communication; the design of antenna pedestal 109 bottom has 6 mounting holes, and the convenience links firmly with vehicle-mounted platform.
A pitching driving unit 102 and a pitching pinion 119 connected with the pitching driving unit 102 are arranged in the pitching sphere 101, the pitching pinion 119 is fixed on the inner wall of the pitching sphere 101, and a pitching gearwheel 120 meshed with the pitching pinion 119 is fixed on the pitching shaft 121; an azimuth driving unit 115 and an azimuth bull gear 112 arranged on the azimuth driving unit 115 are further arranged between the lower cover plate 113 and the antenna pedestal 109, and an azimuth pinion 122 meshed with the azimuth bull gear 112 is fixed on the antenna pedestal 109.
As shown in fig. 5, an azimuth driving unit 115 and an azimuth large gear 112 are further disposed between the lower cover plate 113 and the antenna base 109, and the signal processing unit 110, the pitch driving unit 102 and the azimuth driving unit 115 form a servo system, which can realize stable control of the high-speed laser communication device in the vehicle and ground and perform information transmission. The pitching driving unit 102 and the azimuth driving unit 115 both adopt steering engines as executing elements, the pitching pinion gear 119 and the azimuth pinion gear 122 are respectively connected with the steering engines, and the steering engines use a 1: the reduction gear of 4 enables precise control of the communication antenna 2.
The working process of the invention is as follows:
the invention adopts a two-axis stable control platform, carries lasers with various wave bands and power according to requirements, realizes high-speed laser communication, is connected with the vehicle-mounted platform through six screw holes at the bottom of the antenna seat 109, and can realize normal installation or inversion according to the requirements of different vehicle-mounted platforms.
The finished product of the three optical systems of the vehicle-ground high-speed laser communication device is distributed in a shape of a Chinese character 'ji', wherein the beacon transmitting system 204 and the beacon receiving system 205 share one protection window, so that the problem of light shielding is avoided. The cover glass 116 is bonded to the front cover 117 and aligned with the corresponding optical system.
The invention needs two pairs of fixed receiving ends at one end and vehicle-mounted ends at the other end, realizes data exchange, can also be used in a networking way, and realizes large-scale data exchange. The invention can be used when the vehicle-mounted platform decelerates or parks, the transmission rate can reach 2.5Gbps, and the vehicle speed or parking time can be determined according to the size of the transmission data volume.
When the device works, the azimuth angle and the pitch angle of the servo system are scanned, a beacon transmitting system 204 at one end transmits laser, and a beacon receiving system 205 at the other end receives the laser, so that alignment is realized; and then data exchange is carried out through the information source transmitting and receiving system 203, so that high-speed communication is realized.
The modular laser has the advantages that the modular design is adopted, and various lasers with different wave bands and power can be replaced according to different use requirements, so that communication in different environments and different distances is realized; the communication antenna 2 is sealed in the two-axis stable platform 1, so that the azimuth and pitching motion can be realized, and the waterproof and dustproof performance is good; the train-ground high-speed laser communication device is used for large-capacity data dump between a train and the ground, has large-capacity information transmission capacity, and can overcome the influence of vehicle shaking on the system as a servo follow-up system supports the requirement that the train stops freely within a certain range.
The whole device has small volume, light weight and high reliability; the cable can resist severe environment and electromagnetic interference; safety, secrecy, convenient erection and quick opening; the method can be used for conveniently and quickly starting high-reliability broadband communication between the vehicle places, and has wide application range.
The above-described embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the inventive concept of the present invention, and these embodiments are within the scope of the present invention.
Claims (5)
1. The utility model provides a high-speed laser communication device in car ground, comprises diaxon stabilized platform (1) and communication antenna (2), its characterized in that: the two-axis stable platform (1) is directly butted with the communication antenna (2) through a communication socket;
the two-axis stable platform (1) comprises an azimuth axis system (107) consisting of an antenna pedestal (109), an antenna frame (104), a bearing and a bearing pressing ring, and further comprises a pitching axis system (105) consisting of the antenna frame (104), a pitching sphere (101), a pitching axis (121) and the bearing pressing ring, wherein two shaft covers (106) are installed at two ends of the pitching axis system (105), a signal processing unit (110) for completing wide area network or local area network service data conversion, a power panel (111) for completing working voltage conversion and an optical transceiver (114) for completing network signal to optical signal conversion are sequentially installed in the antenna pedestal (109), the bottom of the antenna pedestal (109) is protected through a lower cover plate (113), and a socket set (108) is arranged on the side surface of the antenna pedestal (109) and used for installing a network port for external communication;
the communication antenna (2) comprises a spherical rotating body consisting of a pitching sphere (101), a rear cover (103), a front cover (117) and protective glass (116) and a support (202) arranged in the spherical rotating body, wherein a laser (201), an information source transmitting and receiving system (203), a beacon transmitting system (204) and a beacon receiving system (205) are sequentially arranged on the support (202);
a pitching driving unit (102) and a pitching pinion (119) connected with the pitching driving unit (102) are arranged in the pitching sphere (101), the pitching pinion (119) is fixed on the inner wall of the pitching sphere (101), and a pitching gearwheel (120) meshed with the pitching pinion (119) is fixed on the pitching shaft (121);
an azimuth driving unit (115) and an azimuth bull gear (112) arranged on the azimuth driving unit (115) are further arranged between the lower cover plate (113) and the antenna pedestal (109), and an azimuth pinion (122) meshed with the azimuth bull gear (112) is fixed on the antenna pedestal (109);
the signal processing unit (110), the pitching driving unit (102) and the azimuth driving unit (115) form a servo system so as to realize stable control and information transmission of the device.
2. The high-speed laser communication device on the ground of the vehicle as claimed in claim 1, wherein the azimuth axis system (107) and the pitch axis system (105) are both limited in rotation range by a limit rod (118) fixed on the side wall of the antenna frame (104).
3. The high-speed laser communication device for the train-ground as claimed in claim 1, wherein the pitch drive unit (102) and the azimuth drive unit (115) both adopt a steering engine as an actuating element, the pitch pinion (119) and the azimuth pinion (122) are respectively connected with the steering engine, and the steering engine adopts a 1: the reduction gear of 4 realizes the accurate control of the communication antenna (2).
4. A laser communication device according to claim 1, wherein the source transmitting and receiving system (203), the beacon transmitting system (204) and the beacon receiving system (205) are distributed in a zigzag manner, wherein the receiving system (203) uses a piece of cover glass (116) alone, and the beacon transmitting system (204) and the beacon receiving system (205) share the same piece of cover glass (116).
5. A high-speed laser communication device on vehicle and ground as claimed in claim 1, wherein said two pieces of cover glass (116) are arranged up and down and adhered to the front cover (117).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787287.XA CN110661078B (en) | 2019-08-25 | 2019-08-25 | Vehicle-ground high-speed laser communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787287.XA CN110661078B (en) | 2019-08-25 | 2019-08-25 | Vehicle-ground high-speed laser communication device |
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| CN110661078A true CN110661078A (en) | 2020-01-07 |
| CN110661078B CN110661078B (en) | 2021-06-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525954A (en) * | 2020-05-29 | 2020-08-11 | 新疆大学 | Multi-input multi-output wireless optical communication system for rail train |
| CN115913362A (en) * | 2023-02-15 | 2023-04-04 | 慧铁科技有限公司 | System for carrying out ground data dump by using wireless optical communication |
| CN115913267A (en) * | 2023-01-04 | 2023-04-04 | 慧铁科技有限公司 | Vehicle-ground high-speed communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111525954A (en) * | 2020-05-29 | 2020-08-11 | 新疆大学 | Multi-input multi-output wireless optical communication system for rail train |
| CN115913267A (en) * | 2023-01-04 | 2023-04-04 | 慧铁科技有限公司 | Vehicle-ground high-speed communication device |
| CN115913362A (en) * | 2023-02-15 | 2023-04-04 | 慧铁科技有限公司 | System for carrying out ground data dump by using wireless optical communication |
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| Publication number | Publication date |
|---|---|
| CN110661078B (en) | 2021-06-01 |
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