CN102158281A - High-speed omni-directional wireless laser communication equipment - Google Patents
High-speed omni-directional wireless laser communication equipment Download PDFInfo
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- CN102158281A CN102158281A CN2011100301113A CN201110030111A CN102158281A CN 102158281 A CN102158281 A CN 102158281A CN 2011100301113 A CN2011100301113 A CN 2011100301113A CN 201110030111 A CN201110030111 A CN 201110030111A CN 102158281 A CN102158281 A CN 102158281A
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Abstract
The invention discloses high-speed omni-directional wireless laser communication equipment. The equipment mainly comprises a shell, wherein, the shell is internally equipped with an MCU (micro control unit) modular circuit, a wireless encoding-decoding and modulation-demodulation modular circuit, an operational amplifier modular circuit, a filter modular circuit, an omni-directional optical antenna modular circuit, a signal processing modular circuit, a control signal interface circuit and a power supply modular circuit; and an omni-directional optical antenna, a communication interface, a control signal interface and a power interface are arranged on the shell. By utilizing the high-speed omni-directional wireless laser communication equipment, certain mobile communication equipment, terminals and electronic equipment in an aircraft and a cabin can be interlinked together so as to realize high-speed omni-directional simultaneous two-way transmission of data signals such as a speech signal, an image signal, a network signal and the like; and trivial cabling is avoided, and weight and power consumption of a system are reduced.
Description
Technical field
The invention belongs to laser communications equipment, be specifically related to a kind of high speed omnidirectional wireless laser communication equipment that is used for communication in aircraft and the cabin.
Background technology
Communication in current spacecraft and the cabin all is that the wire communication mode that adopts cable to connect is carried out, this mode has not only increased the overall weight of system, but also must consider how to solve the problem of phase mutual interference between each communication equipment, this has brought complicated problems just for the internal system cable distribution.Fast development along with science and technology, following aircraft and cabin internal information transmission system will be to networking, miniaturization, intelligent direction development, the communication bandwidth of its intercom system, traffic rate will further increase, must set up fast, efficient, safe, the stable communication link of networking, just can meet the demands.Along with the rapid growth of data volume, the traffic and the variation of communication form, existing microwave communication and wire cable communication can't satisfy the demands, simultaneously various electronic equipments produce a large amount of electromagnetic radiation, the transmission of signal under the traditional approach are produced have a strong impact on.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high speed omnidirectional wireless laser communication equipment, it can link some mobile communication equipments, terminal and electronic equipment in aircraft and the cabin, realizes data-signals such as high speed omnidirectional voice, image, network transmitted in both directions simultaneously; Exempt loaded down with trivial details cable distribution, reduce system weight and power consumption.
For addressing the above problem, a kind of high speed omnidirectional wireless laser communication equipment that the present invention is designed, it is mainly by housing, the MCU modular circuit that is provided with in the housing, wireless coding and decoding and modulation modular circuit, amplifier modular circuit, filtration module circuit, omnidirectional optical Anneta module circuit, signal processing module circuit, control signal interface circuit, power module circuitry, and omnidirectional optical antenna, communication interface, control signal interface, power interface that housing is provided with are formed; The MCU modular circuit connects wireless coding and decoding and modulation modular circuit, signal processing module circuit and control signal interface circuit respectively; Wireless coding and decoding and modulation modular circuit are connected to omnidirectional optical Anneta module circuit through amplifier modular circuit and filtration module circuit successively, and omnidirectional optical Anneta module circuit links to each other with the omnidirectional optical antenna; The signal processing module circuit connects communication interface; Control signal interface circuit connection control signal interface; The input of power module circuitry is connection control signal interface circuit and power interface respectively.
In order to realize omnidirectional's wireless laser communication function, such scheme omnidirectional optical antenna comprises base and is fixed at least 1 laser detector and generating laser on the base, above-mentioned laser detector is around shape and is evenly distributed on the base, and each laser detector around all be provided with generating laser more than 3 or 3 around ground.
It is planar that the described base of such scheme preferably is hemisphere, and generating laser and laser detector are distributed on the convex surface of the planar base of this hemisphere.
The outer surface of the described omnidirectional optical antenna of such scheme is that the front end of generating laser and laser detector preferably is covered with a filter.
The described omnidirectional optical Anneta module of such scheme circuit mainly is made up of power amplifier, automatic power control circuitry, impedance matching circuit, trans-impedance amplifier, resistance, limiting amplifier, automatic gain control circuit and equalizer; The input of power amplifier links to each other with the filtration module circuit, and automatic power control circuitry is connected across on power amplifier output and the feedback end, and the output of power amplifier links to each other with impedance matching circuit, and the output of impedance matching circuit connects generating laser; Laser detector is connected on the input of trans-impedance amplifier, cross-over connection resistance on the input of trans-impedance amplifier and the output, the output of trans-impedance amplifier links to each other with the input of limiting amplifier, automatic gain control circuit is connected across on limiting amplifier output and the feedback end, and the output of limiting amplifier is connected with the filtration module circuit through equalizer.
Further improvement as such scheme, also be connected to wired encoding and decoding and modulation modular circuit on the described MCU modular circuit of such scheme, these wired encoding and decoding are connected with the optical cable interface that housing is provided with through the optical interface modular circuit with the modulation modular circuit.Satisfy the big traffic between some permanent plants and the requirement of high bandwidth in aircraft and the cabin by additional above-mentioned wire transmission module.
Compared with prior art, the present invention has following characteristics:
1, the invention provides a kind of novel laser communication gear, can set up a wireless laser communication link by this equipment and realize that data-signal such as 100Mbps omnidirectional high-speed bidirectional voice, image, network is communicated by letter between equipment and the equipment in aircraft and the cabin, thereby avoided mobile device in aircraft and the cabin when communicating, the telecommunication cable that links to each other can be made troubles to mobile communication, and communication makes mobile device to shift one's position freely in limited space and needn't worry the problem that communication can be interrupted;
2, generating laser in the omnidirectional optical antenna of the present invention and laser detector adopt around distributing and realize isotropic communication function, and the omnidirectional optical antenna adopts diversity receiving technology to avoid system because the multipath that light diffusion causes disturbs simultaneously;
3, can set up the data communication that a wired laser communication link is realized 1Gbps two-forty between equipment in aircraft and the cabin and the equipment by equipment, thereby guarantee the requirement that the jumbo high bandwidth of some stationary electronic devices links in aircraft and the cabin;
4, by the present invention link that the system that forms has that message capacity is big, information privacy is strong, fail safe is good, antijamming capability is strong, volume little in light weight, compatible good, support mobile communication, the characteristics that message transmission and exchange can inside, leak free physically closed area be carried out.
Description of drawings
Fig. 1 is the theory diagram of a kind of high speed of the present invention omnidirectional wireless laser communication equipment;
Fig. 2 is a kind of structural representation of omnidirectional optical antenna;
Fig. 3 is the theory diagram of a kind of omnidirectional optical Anneta module of the present invention circuit;
Fig. 4 uses connection diagram for the present invention.
Embodiment
A kind of high speed of the present invention omnidirectional wireless laser communication equipment as shown in Figure 1, it is mainly by housing, the MCU modular circuit that is provided with in the housing, wireless coding and decoding and modulation modular circuit, amplifier modular circuit, filtration module circuit, omnidirectional optical Anneta module circuit, signal processing module circuit, control signal interface circuit, power module circuitry, and omnidirectional optical antenna, communication interface, control signal interface, power interface that housing is provided with are formed.The MCU modular circuit connects wireless coding and decoding and modulation modular circuit, signal processing module circuit and control signal interface circuit respectively.Wireless coding and decoding and modulation modular circuit are connected to omnidirectional optical Anneta module circuit through amplifier modular circuit and filtration module circuit successively, and omnidirectional optical Anneta module circuit links to each other with the omnidirectional optical antenna.The signal processing module circuit connects communication interface.Control signal interface circuit connection control signal interface.The input of power module circuitry is connection control signal interface circuit and power interface respectively.In addition, in order to satisfy between the external equipment demand of big capacity and high bandwidth, also be connected to wired encoding and decoding and modulation modular circuit on the MCU modular circuit of the present invention, these wired encoding and decoding are connected with the optical cable interface that housing is provided with through the optical interface modular circuit with the modulation modular circuit.
Above-mentioned high speed omnidirectional wireless laser communication equipment is realized omnidirectional's wireless laser communication function by the omnidirectional optical antenna.Omnidirectional optical antenna of the present invention as shown in Figure 2, and comprise base and be fixed at least 1 laser detector and generating laser on the base, above-mentioned laser detector is around shape and is evenly distributed on the base, and each laser detector around all be provided with generating laser more than 3 or 3 around ground.In the preferred embodiment of the present invention, include 6 laser detectors, 1 center that is positioned at base in these 6 laser detectors, all the other 5 then are around the laser detector at center and are equally distributed on the base.Respectively be surrounded with 3 generating lasers around above-mentioned each laser detector.The electrical signal conversion that generating laser will send be laser signal and be transmitted into atmosphere or free space in so that mobile device can receive, laser detector receives laser signal that mobile device emits and it is converted to the signal of telecommunication that to give the internal host of high speed omnidirectional wireless laser communication equipment be that the MCU modular circuit is handled.ISI, the receiver location that different paths cause changes in order to overcome, the shadow of object effect is to the influence of communication system, and the present invention proposes the light diversity receiving technology.By a plurality of omnidirectional optical antennas are installed on the different directions of receiving equipment, the generating laser of omnidirectional optical antenna inside, particularly laser detector are evenly distributed on the same hemispherical convex surface simultaneously, same signal is received respectively, each tributary signal that receives is separate, and before diversity merges, all tributary signals are carried out similitude relatively, choose the merging that gains of signal similar is maximum in all branch roads branch road, cast out the less tributary signal of other similitudes.The characteristics of this receive mode are before diversity merges all tributary signals to be screened, and have avoided the bigger branch road of probable bit error.In addition, the outer surface of omnidirectional optical antenna of the present invention is that the front end of generating laser and laser detector is covered with a filter, by this filter incoherent stray light target signal filter is fallen, with the composition of noise in the signal that reduces the laser detector reception.
Omnidirectional optical Anneta module circuit of the present invention as shown in Figure 3, it mainly is made up of power amplifier, automatic power control circuitry, impedance matching circuit, trans-impedance amplifier, resistance, limiting amplifier, automatic gain control circuit and equalizer; The input of power amplifier links to each other with the filtration module circuit, and automatic power control circuitry is connected across on power amplifier output and the feedback end, and the output of power amplifier links to each other with impedance matching circuit, and the output of impedance matching circuit connects generating laser; Laser detector is connected on the input of trans-impedance amplifier, cross-over connection resistance on the input of trans-impedance amplifier and the output, the output of trans-impedance amplifier links to each other with the input of limiting amplifier, automatic gain control circuit is connected across on limiting amplifier output and the feedback end, and the output of limiting amplifier is connected with the filtration module circuit through equalizer.The modular circuit of omnidirectional optical antenna is exactly that the signal of telecommunication that will send is carried out power amplification, and power amplification circuit will add automated power control, otherwise can cause damage to generating laser.The signal of telecommunication carries out impedance matching by impedance matching circuit again through after the power amplification, the laser signal of last driving laser reflector output same frequency.Laser detector receives laser signal and light signal is converted to the signal of telecommunication, because the laser signal that laser detector receives may be more weak, the electrical signal amplitude of output is also smaller, so the signal of telecommunication must pass through amplification could be by the next stage processing of circuit, therefore the amplifying circuit of the amplifying circuit that adopts and wired laser communication is identical.In addition, the omnidirectional optical Anneta module also includes a direct current biasing circuit, and this dc bias circuit connects generating laser, guarantees that the generating laser bias voltage reaches threshold voltage rapidly, thereby realizes higher transmission rate.
Realize the wireless or wired connection of the communication link between each external equipment in aircraft and the cabin by the high speed omnidirectional wireless laser communication equipment of said structure.Referring to Fig. 4, be a kind of application example of the present invention.When needing to communicate between the mobile device in aircraft and the cabin, can be in aircraft and cabin be equipped with 1 high speed omnidirectional wireless laser communication equipment on the mobile device, be about to mobile device and link to each other with the communication interface of high speed omnidirectional wireless laser communication equipment.If the space is big in aircraft and the cabin, structure is comparatively during complexity, can also in aircraft and cabin, additionally lay 1 or even a plurality of high speed omnidirectional wireless laser communication equipment as terminal, so just can allow mobile device in aircraft and the cabin in limited space, shift one's position freely and needn't worry the problem that communication can be interrupted.Traffic rate by omnidirectional's wireless laser communication that the present invention realized can reach 100Mbps, and the communication error rate reaches 10
-9, can satisfy the communication requirement of mobile device fully.When needing to communicate by letter between each permanent plant in aircraft and the cabin, only need permanent plant is connected on the communication interface of high speed omnidirectional wireless laser communication equipment nearby, the conversion of signals that will be needed to transmit by high speed omnidirectional wireless laser communication equipment is light signal and is sent on the optical fiber by the optical cable interface then, omnidirectional's wireless laser communication equipment of the other end receives the light signal that sends on the optical fiber by the optical cable interface again, and light signal is converted to the signal of telecommunication, be transferred to the permanent plant that is connected with it by communication interface at last, wired laser communication speed of omnidirectional's wireless laser communication equipment can reach more than the 1Gbps.
Signal that above-mentioned high speed omnidirectional wireless laser communication equipment transmits into external equipment and the signal that will send external equipment to are handled, such as mould/number conversion, level conversion, Ethernet protocol conversion etc., the MCU modular circuit is the core of entire equipment, it finishes the multiplexing and demultiplexing to transmission signals, and the distribution of clock signal and the synchronization process of signal etc. are crucial to be handled.The effect of control signal interface circuit is exactly the conversion (or level conversion) of control signal being differentiated and carried out signal format.Power module circuitry is exactly that the power supply that power interface is imported is carried out voltage transitions, is about to the operating voltage that voltage transitions becomes to be fit to each module.Wired encoding and decoding and modulation modular circuit or wireless coding and decoding and modulation modular circuit are exactly that the transmission signals modulating/demodulating is handled, so that signal is adapted at transmitting in wireless laser communication channel or the wired laser communication channel.The effect of optical interface modular circuit is that signal is carried out level conversion and opto-electronic conversion.Amplifier modular circuit and filtration module circuit amplify and Filtering Processing the signal that will send or receive.Omnidirectional optical Anneta module circuit and omnidirectional optical antenna are the ends that transmits and receives of omnidirectional's wireless laser communication equipment, need of the electricity/light transformation of the signal of transmission through these two modular circuits, be light signal with electrical signal conversion and send into the space by generating laser emission and transmit, the laser detector of omnidirectional optical antenna inside is surveyed and is received laser signal useful in the space and pass through filter filtering interfering light signal, useful laser signal is converted to the signal of telecommunication offers the next stage processing of circuit.
Claims (6)
1. high speed omnidirectional wireless laser communication equipment, it is characterized in that: it is mainly by housing, the MCU modular circuit that is provided with in the housing, wireless coding and decoding and modulation modular circuit, amplifier modular circuit, filtration module circuit, omnidirectional optical Anneta module circuit, signal processing module circuit, power module circuitry, and omnidirectional optical antenna, communication interface, control signal interface, power interface that housing is provided with are formed; The MCU modular circuit connects wireless coding and decoding and modulation modular circuit, signal processing module circuit and control signal interface circuit respectively; Wireless coding and decoding and modulation modular circuit are connected to omnidirectional optical Anneta module circuit through amplifier modular circuit and filtration module circuit successively, and omnidirectional optical Anneta module circuit links to each other with the omnidirectional optical antenna; The signal processing module circuit connects communication interface; Control signal interface circuit connection control signal interface; The input of power module circuitry is connection control signal interface circuit and power interface respectively.
2. high speed according to claim 1 omnidirectional wireless laser communication equipment, it is characterized in that: also be connected to wired encoding and decoding and modulation modular circuit on the MCU modular circuit, these wired encoding and decoding are connected with the optical cable interface that housing is provided with through the optical interface modular circuit with the modulation modular circuit.
3. high speed according to claim 1 and 2 omnidirectional wireless laser communication equipment, it is characterized in that: the omnidirectional optical antenna comprises base and is fixed at least 1 laser detector and generating laser on the base, above-mentioned laser detector is around shape and is evenly distributed on the base, and each laser detector around all be provided with generating laser more than 3 or 3 around ground.
4. high speed according to claim 3 omnidirectional wireless laser communication equipment, it is characterized in that: it is planar that described base is hemisphere, and generating laser and laser detector are distributed on the convex surface of the planar base of this hemisphere.
5. high speed according to claim 3 omnidirectional wireless laser communication equipment, it is characterized in that: the outer surface of omnidirectional optical antenna is that the front end of generating laser and laser detector is covered with a filter.
6. high speed according to claim 3 omnidirectional wireless laser communication equipment, it is characterized in that: omnidirectional optical Anneta module circuit mainly is made up of power amplifier, automatic power control circuitry, impedance matching circuit, trans-impedance amplifier, resistance, limiting amplifier, automatic gain control circuit and equalizer; The input of power amplifier links to each other with the filtration module circuit, and automatic power control circuitry is connected across on power amplifier output and the feedback end, and the output of power amplifier links to each other with impedance matching circuit, and the output of impedance matching circuit connects generating laser; Laser detector is connected on the input of trans-impedance amplifier, cross-over connection resistance on the input of trans-impedance amplifier and the output, the output of trans-impedance amplifier links to each other with the input of limiting amplifier, automatic gain control circuit is connected across on limiting amplifier output and the feedback end, and the output of limiting amplifier is connected with the filtration module circuit through equalizer.
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| CN2011100301113A CN102158281A (en) | 2011-01-27 | 2011-01-27 | High-speed omni-directional wireless laser communication equipment |
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| CN107896128A (en) * | 2017-12-13 | 2018-04-10 | 福建晶彩光电科技股份有限公司 | A kind of indoor LED screen real-time display system based on wireless light communication |
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| CN109257095A (en) * | 2018-10-30 | 2019-01-22 | 宁波光舟通信技术有限公司 | The transmission method and device of Communication ray |
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| CN111447012A (en) * | 2020-03-18 | 2020-07-24 | 长春理工大学 | Ad-hoc network formation airplane group laser omnidirectional communication optical system and communication method thereof |
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Cited By (8)
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| CN107819521A (en) * | 2017-11-03 | 2018-03-20 | 广州通导信息技术服务有限公司 | Can auxiliary positioning be highly sensitive and the visible laser equipment of jamproof multi-to-multi communication |
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| CN109257095A (en) * | 2018-10-30 | 2019-01-22 | 宁波光舟通信技术有限公司 | The transmission method and device of Communication ray |
| CN110061772A (en) * | 2019-05-07 | 2019-07-26 | 中国人民解放军军事科学院国防科技创新研究院 | A kind of aircraft cluster self-organizing network construction method based on photoelectricity compounded link |
| CN110061772B (en) * | 2019-05-07 | 2020-11-10 | 中国人民解放军军事科学院国防科技创新研究院 | Aircraft cluster self-organizing network construction method based on photoelectric hybrid link |
| CN111447012A (en) * | 2020-03-18 | 2020-07-24 | 长春理工大学 | Ad-hoc network formation airplane group laser omnidirectional communication optical system and communication method thereof |
| CN111447012B (en) * | 2020-03-18 | 2023-05-26 | 长春理工大学 | Ad hoc network formation aircraft group laser omnidirectional communication optical system and communication method thereof |
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Application publication date: 20110817 |