CN106134522B - A kind of one-way data transmission method and device based on wireless laser - Google Patents
A kind of one-way data transmission method and device based on wireless laserInfo
- Publication number
- CN106134522B CN106134522B CN201218002353.7A CN201218002353A CN106134522B CN 106134522 B CN106134522 B CN 106134522B CN 201218002353 A CN201218002353 A CN 201218002353A CN 106134522 B CN106134522 B CN 106134522B
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- data
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Abstract
The invention discloses a kind of for non-relating computer to relating computer carry out unidirectional, without the one-way data transmission method based on wireless laser and the device of feedback data transmission. It relates to for security requirement, and the flow direction of data can only be unidirectional, is transmitted the data transmission applications of data by non-concerning security matters machine to concerning security matters machine. It is made up of data transmission applications software, transmission adapter, laser optical path part, reception adapter, data receiver application software, can complete point-to-point data-transformation facility. Between adapter, use laser to carry out transfer of data, laser link is unidirectional, adopts self-defining data transportation protocol. The present invention has good confidentiality, easy to use, transfer rate compared with the feature such as high, device therefor volume is little, lightweight, and the equipment that is applicable to transmit data by non-concerning security matters machine to concerning security matters machine is applied.
Description
Technical field
A kind of one-way data based on wireless laser the present invention relates in data transfer of computer security fields passesTransmission method and device thereof, be applicable to be carried out to the computer in concerning security matters network by the computer in non-concerning security matters networkUnidirectional, safe, transfer of data easily.
Background technology
In recent years, informatization develops rapidly, and between outer net, Intranet, private network, exchange message is basicRequirement. How to ensure that, under the prerequisite of Intranet and private network resource security, the transfer of data realizing between net is informationThe problem that must solve in system Construction.
Network vulnerable is to various security threats, as the stealing, distort, destroy of data, and the oozing of computer virusThoroughly and attack etc., confidentiality, integrality, availability and the authenticity of data are had a strong impact on. To netThe information security of network has many kinds of measures, for example, network is carried out to intrusion detection and vulnerability scanning etc. Due to theseExtreme complexity and the finiteness of technology, cannot provide altitude information safety requirements for network. Because this type of baseA kind of logic mechanism in the protection of software. This is very easily handled for logic entity. Therefore,Concerning security matters network can not be placed the safety of private data in the protection of doing to judge with probability on, must have peace oneFull gate, ensures that the information of concerning security matters network is not leaked and destroyed, and on concerning security matters network, realizes physicsIsolation. Adopt hardware physical isolation scheme, by inner concerning security matters network and outer net up hill and dale physical isolation open, do not haveThere is any connection. Can ensure that so inner concerning security matters network data can not reveal, there is high security.
In addition, infrared data transmission mode also should in the transfer of data of the equipment such as Laptop & DesktopWith. In Wireless Data Transmission, radio and infrared ray are two kinds of transmission mediums that complement each other, and are applicable toDifferent occasions. Radio is applicable to grow the occasion of Distance Transmission, and infrared ray is adapted to short-range occasion.The IrDA Infrared Data Association that set up in June, 1993 has formulated a series of IrDA protocol. No matter wirelessElectricity or infrared ray, be still a kind of two-way data transfer mode, is not physically-isolated. Therefore, canThe data security that ensures Intranet, private network, can make again outside data enter Intranet, uses by oneself, and be currentThe requirement of application.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide a kind of based on wireless laser transmission technology, can be byComputer in non-concerning security matters network carries out unidirectional, transfer of data that nothing is fed back to the computer in concerning security matters networkMethod and apparatus. For security requirement, the data flow of transmitting in the present invention can only be unidirectional, by non-Concerning security matters machine transmits the data transmission applications of data to concerning security matters machine.
For achieving the above object, technical scheme of the present invention is:
1) open the power supply that sends adapter and receive adapter, transmitting indicating lamp is bright, and diversing lens is sentLaser beam aim at receiver lens, in the time of beam alignment, receive the codan lamp of adapter bright;
2) the data receiver application software of log-on data receiving terminal, sets receive mode;
3) the data transmission applications software of log-on data transmitting terminal, selects send mode, and data are sent into transmissionAdapter, transmission adapter sends to generating laser data after data are processed;
4) generating laser completes the light modulation of data-signal, and the signal of telecommunication is changed into optical signal, through diversing lensLaunch, optical signal is transferred to laser pickoff through receiver lens;
5) laser pickoff completes reception and the demodulation of optical signal, and the optical signal receiving is transferred to after the signal of telecommunicationBe transferred to reception adapter;
6) after reception adapter is processed the data that receive, data are sent into data receiver, data connectReceipts application software completes reception and the storage of data.
The technical scheme of device that realizes said method is as follows:
This device comprises data transmission blocks, transmission adapter, laser optical path part, receives adapter, numberAccording to receiver module, wherein: laser optical path part comprises: generating laser, optical fiber and diversing lens, receptionLens, laser pickoff, is characterized in that:
Data transmission blocks and transmission adapter are deployed on data sending terminal, the two electrical connection, and data sendModule deploy data transmission applications software, completes data sending function;
Data reception module and reception adapter are deployed on data receiver, the two electrical connection, data receiverModule deploy data receiver application software, completes data receiver function;
Sending adapter is electrically connected with generating laser;
Generating laser is connected with diversing lens by optical fiber;
Receiver lens is connected with laser pickoff by optical fiber;
Laser pickoff is electrically connected with reception adapter.
Laser that generating laser sends is collimated by diversing lens, carries out, after light path aligning, being transmitted into and connecingReceiving end receives on the laser pickoff of adapter, and laser pickoff completes reception and the demodulation of optical signal, connecingThe optical signal of receiving transfers the signal of telecommunication to, sends in FPGA, and FPGA receives the data that laser pickoff recovers, soTo receiving, data are gone here and there and conversion, 8B/10B decoding afterwards, after error-correcting decodings etc. are processed, then decodedValid data write in FIFO, transfer to the processing of hardware ICP/IP protocol stack; Finally, protocol stack chip will receiveThe data composition IP bag arriving, uses ICP/IP protocol that packet is sent into receiving end computer, and receiving terminal calculatesData receiver application software on machine receives data and stores this locality into.
The present invention has the following advantage that has compared with background technology:
(1) wireless laser data transmission technology is applied to data transfer of computer by this method, the directionality of laserGood, in conjunction with forward error correction technique, transmission error rates is low, is suitable for unidirectional data transmission applications.
(2) non-concerning security matters machine is unidirectional to the data link between concerning security matters machine. First, on transmitting adapter, only haveGenerating laser, receives on adapter and only has laser pickoff, ensures that from device capabilities it is unidirectional numberReportedly defeated; Secondly, on transmission adapter, a configuration data sending module in FPGA, receives FPGA on adapterIn a configuration data receiver module, ensure that from link layer it is unidirectional. Again, in application layer, apply softPart is divided into data transmission applications software and data receiver application software, and on concerning security matters machine, only arrange and receive software, andThe type that can dock message in-coming part is controlled, and can set and receive catalogue monitoring.
(3) non-concerning security matters machine is unidirectional to the data link between concerning security matters machine, does not have reverse physical link,Therefore by concerning security matters machine to non-concerning security matters machine, or concerning security matters network is physically-isolated to being still between non-concerning security matters network. ReallyProtect the data security of Intranet.
(4) this method can realize outer network data can be to the real-time Transmission of Intranet, meet situation, video etc. real-timeInformation is the requirement to classified network transmission by non-close net.
(5) method that the present invention proposes has good confidentiality, the feature that easy to use, transfer rate is higher, instituteLittle by equipment volume, be convenient to dispose, be suitable for there is security requirement, by non-concerning security matters machine to concerning security matters machine transmit numberAccording to application.
Brief description of the drawings
Accompanying drawing of the present invention is as follows:
Fig. 1 is functional-block diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
With reference to Fig. 1, non-concerning security matters machine A is data sending terminal, and concerning security matters machine B is data receiver. Mainly comprise: numberAccording to sending module, transmission adapter, laser optical path part, reception adapter, data reception module.
(1) main composition of the present invention
1) data transmission blocks
Data transmission blocks deploy data transmission applications software, is configured in the computer of transmitting terminal, is numberProvide human-computer interaction interface according to transmit operation, startup file sends and real time data information sends service, can be rightFile and the data type transmitted are controlled, and complete data framing and the transmission of application layer.
2) data reception module
Data reception module deploy data receiver application software, is configured in the computer of receiving terminal, is receivingEnd startup file receives service and real time data information receives service. Receiving terminal software can add switch control and selectReceiving real-time data, file or real time data add file; Can add received file type, as txt, doc, tiffDeng control selector switch, the data that enter inner net computer are selected, prevent the malicious data such as wooden horseIntrusion. Can set the file reception under catalogue or adopt manual mode to receive by automatic monitoring.
The support of application layer information protocol is all completed in data input and data output software, and application software completes rightThe parsing of agreement, has certain protocol extension ability.
3) send adapter
Send adapter and be connected through network interface with transmitting terminal computer, the network interface that transmission adapter is connected with computer is insertedHead uses plug special, to avoid mispluging into receiving end computer; Send adapter receiving end/sending end computerData, carry out the processing such as Error Correction of Coding, framing, 8B/10B coding, parallel-serial conversion, make to send data and existOn coding, meet the requirement of laser link transmission, and given generating laser. Sending adapter only possessesData sending function.
4) laser optical path part
Laser optical path part comprises: generating laser, optical fiber and diversing lens, receiver lens, laser pickoff.Generating laser completes the light modulation of base-band data signal, and the signal of telecommunication is changed into optical signal, sends out through diversing lensBe shot out, optical signal, through receiver lens, is completed reception and the demodulation of optical signal, connecing by laser pickoffThe optical signal of receiving transfers the signal of telecommunication again to.
5) receive adapter
Receive adapter and be connected through network interface with receiving end computer, the network interface that reception adapter is connected with computer is insertedHead uses the RJ45 connector of standard, receives adapter and receives the data from laser pickoff, goes here and there alsoConversion, 8B/10B decoding, after error-correcting decoding etc. are processed, hardware ICP/IP protocol stack is by the data group receivingBecome IP bag, use ICP/IP protocol that packet is sent into receiving end computer, receive adapter and only possess numberAccording to receiving function.
(2) the concrete course of work of the present invention
Send adapter and be connected with the network interface of transmitting terminal and receiving end computer respectively with reception adapter, suitableOrchestration powers on, and configuration adapters IP address makes the IP address of itself and computer within a network segment.
1), before carrying out transfer of data, first set up laser link. Open and send adapter and receive adapterPower supply, transmitting indicating lamp is bright. Make the laser beam that diversing lens sends aim at receiver lens, when light beam pairOn time, the codan lamp that receives adapter is bright, represents that signal receives stable. Fixed transmission lens and receptionLens, and light path cover protection light path is installed.
2) the data receiver application software of startup receiving terminal, sets the switch control of receiving real-time data, fileSelect; Set and allow to receive file type; Set and receive catalogue monitoring and receive mode.
3) the data transmission applications software of startup transmitting terminal, select File or real time data information send.Data are sent into transmission adapter in the mode of IP packet by network interface, and send adapter and resolve IP packet,After data being carried out to the processing such as buffer memory, Error Correction of Coding, framing, 8B/10B coding, parallel-serial conversion, make itIn the encoding and decoding of data, meet the requirement of laser link transmission, through high-speed differential interface, serial data is spreadBeing defeated by generating laser modulates. While not sending data, it sends verification sequence to generating laser, withStandby recipient carries out verification.
4) generating laser completes the light modulation of base-band data signal, and the signal of telecommunication is changed into optical signal, through transmittingLens are launched, and optical signal is transferred to laser pickoff through receiver lens.
5) laser pickoff completes reception and the demodulation of optical signal, and the optical signal receiving is transferred to after the signal of telecommunicationBe transferred to reception adapter.
6) receive adapter and the data that receive are gone here and there and conversion, 8B/10B decoding, the processing such as error-correcting decodingAfter, by the data composition IP bag receiving, use ICP/IP protocol that packet is sent into receiving end computer,Data receiver application software on receiving end computer is carried out verification and stores this locality into the data that receive.
Data transmitting equipment is by 100M Ethernet PHY, hardware ICP/IP protocol stack, FPGA, FIFOBuffer memory FIFO, configuration FLASH, generating laser form. Data receiver by 100M Ethernet PHY,Hardware ICP/IP protocol stack, FPGA, FIFO buffer memory FIFO, configuration FLASH, laser pickoff form.Ethernet PHY is used for setting up the Ethernet connection of 100 BASE-T; Hardware ICP/IP protocol stack is realizedICP/IP protocol transmission-receiving function, completes the function of carrying out data interaction with computer terminal through network interface. Send and connectReceiving unit has an IP address configuration port, can be configured its IP address, make its can with upper calculatingMachine communicates. Storage device configurations information in Flash, configuration information support imports and derives with file mode.
In data transmission procedure, the pushup storage FIFO in transceiver sends and number as dataAccording to the buffer memory receiving. The FIFO finite capacity of FPGA inside, the therefore external FIFO of larger capacity. LogicalCross FIFO control module, just can make external FIFO carry out buffer memory to data. In one-way transmission, large Capacity FIFOVery necessary, because unidirectional device cannot be carried out real-time Flow Control, in the time that transmission medium-rate has fluctuating, can logarithmAccording to carrying out buffer memory so as not to lose.
So just form the one-way passage of a transfer of data. Due to only exist non-concerning security matters machine A to concerning security matters machine B itBetween one way link, ensured that concerning security matters machine is to non-concerning security matters machine, or concerning security matters network is to the thing between non-concerning security matters networkReason isolation.
Through investigation demonstration and practical application, the one-way data transmission method based on wireless laser of the present inventionFeasible with device, in engineering, be attainable. In the situation that not deviating from spirit of the present invention and essence thereof,Person of ordinary skill in the field can make according to the present invention various corresponding variations and correction, but these changesChange and correction all should belong to the protection domain of claim of the present invention.
Claims (3)
1. the one-way data transmission method based on wireless laser, is characterized in that comprising the following steps:
1) open the power supply that sends adapter and receive adapter, the transmitting indicating lamp that sends adapter is bright, makesThe laser beam that diversing lens sends is aimed at receiver lens, and in the time of beam alignment, the reception that receives adapter refers toShow that lamp is bright;
2) the data receiver application software of log-on data receiving terminal, sets receive mode;
3) the data transmission applications software of log-on data transmitting terminal, selects send mode, and data are sent into transmissionAdapter, transmission adapter sends to Laser emission its data after treatment after data are processedDevice;
4) generating laser completes the light modulation of data-signal, and the signal of telecommunication is changed into optical signal, through diversing lensLaunch, optical signal is transferred to laser pickoff through receiver lens;
5) laser pickoff completes reception and the demodulation of optical signal, and the optical signal receiving is transferred to after the signal of telecommunicationBe transferred to reception adapter;
6) after reception adapter is processed the data that receive, its data after treatment are sent into data receiverEnd, data receiver application software completes reception and the storage of data.
2. realize a device for the one-way data transmission method based on wireless laser claimed in claim 1,This device comprises that data transmission blocks, transmission adapter, laser optical path part, reception adapter, data connectReceive module, wherein: laser optical path part comprises: generating laser, optical fiber and diversing lens, receiver lens,Laser pickoff, is characterized in that:
Data transmission blocks and transmission adapter are deployed on data sending terminal, the two electrical connection;
Data reception module and reception adapter are deployed on data receiver, the two electrical connection;
Sending adapter is electrically connected with generating laser;
Generating laser is connected with diversing lens by optical fiber;
Receiver lens is connected with laser pickoff by optical fiber;
Laser pickoff is electrically connected with reception adapter.
3. device as claimed in claim 2, is characterized in that: also comprise diversing lens and receiver lensFixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218002353.7A CN106134522B (en) | 2012-07-05 | 2012-07-05 | A kind of one-way data transmission method and device based on wireless laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218002353.7A CN106134522B (en) | 2012-07-05 | 2012-07-05 | A kind of one-way data transmission method and device based on wireless laser |
Publications (1)
| Publication Number | Publication Date |
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| CN106134522B true CN106134522B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201218002353.7A Expired - Fee Related CN106134522B (en) | 2012-07-05 | 2012-07-05 | A kind of one-way data transmission method and device based on wireless laser |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106203188A (en) * | 2016-06-24 | 2016-12-07 | 天津光电聚能专用通信设备有限公司 | A kind of Unilateral Data Transferring System and method thereof adding MAC based on dual processors |
| CN106375013A (en) * | 2016-09-22 | 2017-02-01 | 深圳市中锐源科技有限公司 | Non-feedback unidirectional data transmission device based on USB interface and transmission method |
| CN106411669A (en) * | 2016-09-28 | 2017-02-15 | 阳光凯讯(北京)科技有限公司 | Ethernet connecting line transformation and one-way data transmission method and system |
| CN106788718A (en) * | 2017-03-17 | 2017-05-31 | 河南省中远科技有限公司 | A kind of one-way safety transmitting device, system and method based on VLC |
| CN109587453A (en) * | 2018-11-22 | 2019-04-05 | 北京遥感设备研究所 | A kind of FPGA data correction recognition methods based on optical fiber image transmission |
| CN113381811A (en) * | 2021-04-14 | 2021-09-10 | 西安理工大学 | Method for safely transmitting information by adopting wireless laser |
| CN114706807A (en) * | 2022-04-28 | 2022-07-05 | 天津光电聚能专用通信设备有限公司 | High-speed volatile expandable storage device and storage method thereof |
-
2012
- 2012-07-05 CN CN201218002353.7A patent/CN106134522B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106203188A (en) * | 2016-06-24 | 2016-12-07 | 天津光电聚能专用通信设备有限公司 | A kind of Unilateral Data Transferring System and method thereof adding MAC based on dual processors |
| CN106203188B (en) * | 2016-06-24 | 2018-11-27 | 天津光电聚能专用通信设备有限公司 | A kind of Unilateral Data Transferring System and its method adding MAC based on dual processors |
| CN106375013A (en) * | 2016-09-22 | 2017-02-01 | 深圳市中锐源科技有限公司 | Non-feedback unidirectional data transmission device based on USB interface and transmission method |
| CN106411669A (en) * | 2016-09-28 | 2017-02-15 | 阳光凯讯(北京)科技有限公司 | Ethernet connecting line transformation and one-way data transmission method and system |
| CN106788718A (en) * | 2017-03-17 | 2017-05-31 | 河南省中远科技有限公司 | A kind of one-way safety transmitting device, system and method based on VLC |
| CN109587453A (en) * | 2018-11-22 | 2019-04-05 | 北京遥感设备研究所 | A kind of FPGA data correction recognition methods based on optical fiber image transmission |
| CN113381811A (en) * | 2021-04-14 | 2021-09-10 | 西安理工大学 | Method for safely transmitting information by adopting wireless laser |
| CN114706807A (en) * | 2022-04-28 | 2022-07-05 | 天津光电聚能专用通信设备有限公司 | High-speed volatile expandable storage device and storage method thereof |
| CN114706807B (en) * | 2022-04-28 | 2024-06-04 | 天津光电聚能通信股份有限公司 | High-speed volatile expandable storage device and storage method thereof |
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| Date | Code | Title | Description |
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| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DCSP | Declassification of secret patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20180705 |