CN2532627Y - Radio laser communication device - Google Patents
Radio laser communication device Download PDFInfo
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- CN2532627Y CN2532627Y CN02222188U CN02222188U CN2532627Y CN 2532627 Y CN2532627 Y CN 2532627Y CN 02222188 U CN02222188 U CN 02222188U CN 02222188 U CN02222188 U CN 02222188U CN 2532627 Y CN2532627 Y CN 2532627Y
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Abstract
The utility model is a wireless laser communication device composed of at least three identical wireless laser communication units with the same performance and structure. Each unit contain a frame and a shell supported by the frame; a laser transmitting device, a laser receiving device and an optical telescope are arranged inside the shell; a plurality of beam splitting prisms are arranged between every two wireless laser communication units to realize multi channel communication. A high, low and level angle regulating device is arranged at the position where the frame is connected with the shell to automatically regulate the high, low and level angle between the laser transmitting device and the laser receiving device. The utility model has the duplex communication functions of transmitting and receiving optical signals and electric signals with one transmitting source corresponding to a plurality of receiving units, thus realizing multi channel communication, mobility, and big capacity. With wide application range, the utility model can be directly connected with optical fiber communication networks and microwave communication networks.
Description
Technical field
The utility model relates to wireless communication field, more particularly, relates to and utilizes the transmission wireless communication device of laser signal at free space.
Background technology
What be of long duration in the prior art, is to use the radio communication of electromagnetic wave as signal vehicle, the still extensive use so far of its intermediate waves, microwave, millimeter wave radio communication.But all there is fatal defective in they: confidentiality is poor, message capacity is low, the wave band resource is restricted etc.Optical fiber communication be with light as carrier, with optical fiber as transmission medium.Because the band resource of light is very abundant, so message capacity is huge, has become the main body of modern communications.But Networks of Fiber Communications, the construction that comprises the communications infrastructures such as optical transceiver, optical cable are advance plannings, fixing, can occur the region that optical cable does not have arrival or optical cable inconvenience to arrive like this, and this provides the space of development just for laser wireless communication.As far back as the seventies, people are with regard to the problem of the laser atmospheric communication that begins one's study, but since the success of optical fiber communication fully do not paid attention to.In recent years, because the needs of mobile communication and the bandwidth constraints of microwave communication, space optical communication obtains very big progress.Lucent adopts the semiconductor laser of 1.55 mu m wavebands to add fiber amplifier (EDFA) as transmitting illuminant, and adopts WDM structure, realizes the space optical communication of the capacity of 10Gbit/s.Countries such as Japan, Europe have also reported several laser space communication devices.China University of Electronic Science and Technology adopts carbon dioxide laser (10.6 mum wavelengths, intracavity), realizes the atmospheric communication (technological achievement numbering 88210414) of duplexing four-wire system No. three phones of fixed point; Zhongshan University's laser and spectroscopy research institute adopt the amplitude modulation laser standard work of audio frequency or digital signal to realize atmospheric communication transmission (technological achievement numbering 89209283).But they exist message capacity low, and on the structure of communication system, not with other communications facilitys interface of (comprising optical fiber communication, microwave communication), historical facts or anecdotes is little with being worth.For addressing the above problem, Shanghai Optics and Precision Mechanics institute, Chinese Academy of Sciences has reported a kind of wireless laser communication terminal machine and has realized interface (patent No. 00217069.8) with other communications facilitys, but can not realize multichannel communication, fails to be used widely.
In order to overcome the deficiency of above-mentioned existence, the utility model provides a kind of duplex communication function of sending out the receipts light signal and the signal of telecommunication that has with facility, emission source can corresponding a plurality of receiving elements, realize multichannel communication, and removable, the portable wireless laser communication device with practicability function that big capacity, direct same optical fiber communication, microwave communication network be incorporated into the power networks.
Summary of the invention
A kind of wireless laser communication device, constitute by at least three performances and identical in structure wireless laser communication unit, each unit all includes support and by the shell of sole plate supports, laser beam emitting device, laser receiver and optical telescope are set in the shell, in order to realize multichannel communication, between per two wireless laser communication unit, a plurality of beam splitters are set.The junction of support and shell is equipped with height, level angle adjusting mechanism, is used for adjusting automatically the height and the level angle of laser beam emitting device and laser receiver.
Wherein, the structure of laser beam emitting device is: the transmitting terminal coaxial cable joins by high frequency cable and transmitter code code converter; Fiber adapter links by optical fiber and transmitter optical-electrical converter; Code pattern converter and optical-electrical converter all link with the standard selector switch, carry out processing such as shaping, amplification, Clock Extraction then through signal processing module, the input laser driver orders about the laser beam that laser assembly produces modulation, by the laser transmitting antenna orientation to spatial emission.The structure of laser receiver is: the modulated laser signal of collecting through light receiver aerial taps into detector, convert signal of telecommunication input signal processing module to, divide two-way after tapping into the standard selector switch again, the one tunnel is connected in laser driver, connects optical fiber telecommunications line through fiber adapter; Another Lu Zeyu code pattern converter joins, and incoming coaxial cable is to the electrical transmission circuit again.In signal processing module, adopted advanced DSP technology and chip, improved the reliability and the cost of system widely; In code pattern converter, adopted advanced PWM technology, used that integrated circuit makes that this device structure is succinct, excellent working performance, improved the antijamming capability of equipment, the laser of modulation and can directly pass through Optical Fiber Transmission.
The advantage of utility model:
(1) of the present utility model both having can be used as sent out the receipts light signal, can launch the signal of telecommunication again, has the double function;
(2) this device can be realized single to many multichannel communications;
(3) this device has adopted electrical micro-machine mechanism, is directly controlled by microcomputer, by the situation that aligns between optical telescope detection emitter and the receiving system, directly carries out height, level angle adjustment by micom drives mechanism;
(2) this system configuration is simple, directly adopts the PWM modulation system, and volume is little, is a kind of portable system;
(3) this device disposes interfaces such as same optical fiber communication, microwave communication, and the scope of application is wider.
(4) this systematic function is good, and transmission rate is 155Mb/s, and the error rate is lower than 10
-8, look squarely communication distance and be not less than 5 kilometers (5 kilometers of visibility).
The main application fields of this device comprises: the mutual connection between the mobile communication base station, user's access, local area network (LAN), internet access, reserve link, field operations are disposed and calamity emergency fast, be particularly useful for the occasion that to lay optical cable part, inconvenience and can not add microwave antenna (as between the high building, between the opposite, two rivers, high mountain), compare with microwave communication, it need not the frequency occupancy permit.
Description of drawings
Fig. 1 is a general layout structural representation of the present utility model;
Fig. 2 is the structural representation of wireless laser communication of the present utility model unit;
Fig. 3 is the concrete structure schematic diagram of the utility model laser beam emitting device and laser receiver;
Fig. 4 is smooth system of transmit antennas figure of the present utility model;
Fig. 5 is a light receiver aerial system diagram of the present utility model;
Embodiment
Referring to Fig. 1, the wireless laser communication device by
5Individual performance and identical in structure wireless laser communication unit A, B, C, D, E constitute, between per two wireless laser communication unit, a plurality of beam splitter BS1, BS2, BS3 are set, realization is transmitted to a plurality of receivers by an emission source, and signal has homogeneity.As long as select the appropriate beam splitter splitting ratio R and the light intensity of emission source in the practical application for use, just can guarantee that each receiver can receive enough signals.Splitting ratio R can select as required, and at present general have a R=5%, 10%, 50% etc. several.
The structure of each wireless laser communication unit is installed shell 6 by uneven angle-adjusting mechanism 2 referring to Fig. 2 on the support 1, and laser beam emitting device 4, laser receiver 3 and optical telescope 5 are set in the shell 6.
The concrete structure of the utility model laser beam emitting device and laser receiver is referring to Fig. 3, wherein, laser beam emitting device 4 includes: transmitting terminal coaxial fitting, fiber adapter, optical-electrical converter, code pattern converter, signal processing module, laser driver, laser assembly, light transmitting antenna.The transmitting terminal coaxial cable joins by high frequency cable and transmitter code code converter; Fiber adapter links by optical fiber and transmitter optical-electrical converter; Code pattern converter and optical-electrical converter all link with the standard selector switch, carry out processing such as shaping, amplification, Clock Extraction then through signal processing module, the input laser driver orders about the laser beam that laser assembly produces modulation, by the laser transmitting antenna orientation to spatial emission.Laser receiver 3 mainly comprises light receiver aerial, photo-detector, signal processing module, standard selector switch, code pattern converter, laser driver, laser assembly, fiber adapter, coaxial fitting.The laser signal of the modulation of collecting through light receiver aerial converts the signal of telecommunication to by detector, and the input signal processing module is carried out processing such as shaping and clock recovery, divides the two-way transmission through the standard selector switch again.Wherein, the one tunnel is connected in laser driver, makes laser produce the laser beam of modulation, connects optical fiber telecommunications line through fiber adapter; Another Lu Zeyu code pattern converter joins, and incoming coaxial cable is to the electrical transmission circuit again.
Smooth system of transmit antennas figure of the present utility model sees Fig. 4, is made of semiconductor laser 7 and the transmitting mirror 8 that is arranged on its light path.
Fig. 5 sees in the light receiver aerial system, sets gradually corrective lens (eye protection) 9, corrective lens (eye protection) 2 secondary mirrors gummed mirror 10, primary mirror 11, filter 12, condenser gummed mirror 13 and filter condenser 14 on the light path, and last light is transferred to detector 15.
Claims (5)
1, a kind of wireless laser communication device, at least three performances and identical in structure wireless laser communication unit are arranged, each unit all includes support and by the shell of sole plate supports, laser beam emitting device, laser receiver and optical telescope are set in the shell, it is characterized in that between two wireless laser communication unit, a plurality of beam splitters being set.
2, wireless laser communication device according to claim 1 is characterized in that the junction of support and shell is equipped with height, level angle adjusting mechanism.
3, wireless laser communication device according to claim 1 and 2, it is characterized in that the structure of laser beam emitting device is: the transmitting terminal coaxial cable joins by high frequency cable and transmitter code code converter; Fiber adapter links by optical fiber and transmitter optical-electrical converter; Code pattern converter and optical-electrical converter all link with the standard selector switch, carry out processing such as shaping, amplification, Clock Extraction then through signal processing module, the input laser driver orders about the laser beam that laser assembly produces modulation, by light transmitting antenna orientation to spatial emission; The structure of laser receiver is: the modulated laser signal of collecting through light receiver aerial taps into detector, convert signal of telecommunication input signal processing module to, divide two-way after tapping into the standard selector switch again, the one tunnel connects laser driver, connects optical fiber telecommunications line through fiber adapter; Another Lu Zeyu code pattern converter joins, and incoming coaxial cable is to the electrical transmission circuit again.
4, wireless laser communication device according to claim 3 is characterized in that the light transmitting antenna is made of semiconductor laser and the transmitting mirror that is arranged on its light path; The light receiver aerial structure is for setting gradually corrective lens (eye protection), corrective lens (eye protection) 2 secondary mirrors gummed mirror, primary mirror, filter, condenser gummed mirror and filter condenser on light path, last light is transferred to detector.
5, wireless laser communication device according to claim 4 is characterized in that disposing same optical fiber communication, microwave communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02222188U CN2532627Y (en) | 2002-04-09 | 2002-04-09 | Radio laser communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02222188U CN2532627Y (en) | 2002-04-09 | 2002-04-09 | Radio laser communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2532627Y true CN2532627Y (en) | 2003-01-22 |
Family
ID=33700151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02222188U Expired - Fee Related CN2532627Y (en) | 2002-04-09 | 2002-04-09 | Radio laser communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2532627Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684587A (en) * | 2013-11-21 | 2014-03-26 | 华东师范大学 | Multipath wireless laser communication method and device based on digital micro-mirror device |
| CN104169681A (en) * | 2012-03-15 | 2014-11-26 | 莱卡地球系统公开股份有限公司 | Laser system with a laser receiver capable to detect its own movements |
| CN108512602A (en) * | 2018-04-17 | 2018-09-07 | 渤海大学 | A kind of wireless laser communication equipment |
| CN113037373A (en) * | 2019-12-25 | 2021-06-25 | 深圳市招华智能股份有限公司 | Large-area APD space laser regeneration device |
-
2002
- 2002-04-09 CN CN02222188U patent/CN2532627Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104169681A (en) * | 2012-03-15 | 2014-11-26 | 莱卡地球系统公开股份有限公司 | Laser system with a laser receiver capable to detect its own movements |
| US9846029B2 (en) | 2012-03-15 | 2017-12-19 | Leica Geosystems Ag | Laser system with a laser receiver capable to detect its own movements |
| CN103684587A (en) * | 2013-11-21 | 2014-03-26 | 华东师范大学 | Multipath wireless laser communication method and device based on digital micro-mirror device |
| CN103684587B (en) * | 2013-11-21 | 2016-06-29 | 华东师范大学 | A kind of channel wireless radio multi laser communication method based on DMD and device |
| CN108512602A (en) * | 2018-04-17 | 2018-09-07 | 渤海大学 | A kind of wireless laser communication equipment |
| CN108512602B (en) * | 2018-04-17 | 2021-05-14 | 渤海大学 | Wireless laser communication equipment |
| CN113037373A (en) * | 2019-12-25 | 2021-06-25 | 深圳市招华智能股份有限公司 | Large-area APD space laser regeneration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |