CN203630955U - Monitoring device for optical fiber transmission system - Google Patents
Monitoring device for optical fiber transmission system Download PDFInfo
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- CN203630955U CN203630955U CN201320565038.4U CN201320565038U CN203630955U CN 203630955 U CN203630955 U CN 203630955U CN 201320565038 U CN201320565038 U CN 201320565038U CN 203630955 U CN203630955 U CN 203630955U
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Abstract
The utility model discloses a monitoring device for an optical fiber transmission system in the technical field of optical fiber communication transmission. The monitoring device comprises an optical fiber channel data processing module, a GPS (Global Positioning System) antenna and a GPS module, wherein the GPS antenna is connected with the GPS module, and the GPS module is connected with the optical fiber channel data processing module. According to the monitoring device, immediate correction of base point data of an aircraft inertial navigation system can be realized, and the working capacity of the aircraft navigation system and the accuracy of data are improved.
Description
Technical field
The utility model relates to fiber-optic communications traffic technical field, is a kind of optical fiber communication measurement, control or signal transmitting apparatus specifically.
Background technology
From last century end, the tide of globalization have swepts the globe, and Industry globalization drives the globalization of trade, resource, personnel transfer, military affairs, and this burst of globalization trend drives aircraft industry to advance with surprising rapidity.
The fast development of aircraft industry, mainly has benefited from the develop rapidly of the avionics same period.Avionics system is the summation of all electronic systems on aircraft, and it is aircraft " brain ", and it has carried most tasks such as the communication, navigation, display management, electronic countermeasure of aircraft.Along with the raising of aircraft flying power, enter the expansion in spatial domain, the diversity of executing the task, required air environment increases, and the task items of air environment increases, and task amount strengthens, and this is just badly in need of avionics system synthesization.Synthesization is core and the soul of avionics system development, and synthesization can be compressed the volume and weight of avionics system, alleviates flight control personnel's work load, improves the reliability of system, reduces Life Cycle Cost etc.This be comprehensively not limited to unit within, maximally utilising machine external information resource will be a distinguishing feature from now on.
This avionics system that is divided into the synthesization of basic point with function, the functional areas that relate to are more, thinner, between each functional areas or subfunction district, all link.The switching requirement that all exists mass data between its each inside, functional areas and functional areas, it has high requirement in real time to transmission bandwidth, transmission reliability and transmission, and common telecommunication can not meet the demand of avionics system data communication.
Optical fiber communication, is to utilize fiber optic transmission signal, a kind of communication mode transmitting to realize information.A pair of single mode optical fibre can be opened 35000 phones simultaneously, compare with telecommunication there is transmission frequency bandwidth, loss is low, loss evenly and is not subject to the impact of temperature, antijamming capability is strong, fidelity is high, signal security degree is high, reliable operation degree high, the host-host protocol of the high speed serialization ability that it adopts, has high reliability, high bandwidth, feature that real-time is high.Along with the development of the all-wave window optical fiber of the progress of optical fiber technology, particularly anhydrous peak, within the scope of the wide optical frequency from 1280nm to 1625nm, can realize low-loss, low dispersion transmission, transmission capacity is hundred times, several thousand times of even growths of up to ten thousand times.That simultaneously optical fiber communication adopts is point-to-point, star, chain, loop network topological structure, and intermediate equipment is few, does not need to carry out complicated protocol conversion.Just so, optical fiber telecommunications system becomes the major flow communication system of avionics system.
Optical fiber telecommunications system not only comprises basic hardware system; also comprise monitoring management system; its major function is that the various airborne equipments of composition fibre-optic transmission system (FOTS) are carried out to the monitoring of performance and duty; can auto-alarming while breaking down and processed, protection exchanging system is carried out automatically and controlled.It can also realize real-time demonstration and the storage to data simultaneously, and the data of storage are carried out to instant analysis processing.Monitoring management system not only can receive the optical-fibre channel data that optical transmitter and receiver sends, can also be directly and another Optical Network Terminal interconnect.The operation of optical fiber telecommunications system and monitoring function are mainly to realize by optical-fibre channel data interface card.
Aircraft navigation system has experienced the evolution of line-of-sight navigation, instrument flight system, radio navigation system, inertial navigation system, celestial navigation system, at present main adopt take inertial navigation as main body, above other navigational system are auxiliary integrated navigation system.
The principle of work of inertial navigation system is by being arranged on inertial platform, 3 accelerometers are measured aircraft along the acceleration in mutually perpendicular 3 directions, draw speed and the displacement of aircraft along 3 directions by computing machine by computing, thereby can provide continuously the locus of aircraft.Inertial navigation system is that the data that obtain take previous calculations calculate to realize navigator fix as basic point adds data below, and it is take the accuracy of earlier data as supposed premise.If deviation appears in data above, location below also just there will be deviation, affects the accuracy of navigation data.
Utility model content
The utility model has overcome prior art at the integrated navigation system take inertial navigation system as main body, in the time that data are calculated because deviation appears in data above, cause navigator fix below also to there will be deviation, affect the accuracy of navigation data, particularly after long distance, the flight of many regions, the technological deficiency that this problem is more serious, the utility model provides a kind of fibre-optic transmission system (FOTS) supervising device.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
Fibre-optic transmission system (FOTS) supervising device, comprises optical-fibre channel data processing module, gps antenna, GPS module, and gps antenna connects GPS module, and GPS module connects optical-fibre channel data processing module; Optical-fibre channel data processing module comprises the first reference clock chip, the second reference clock chip, optical transceiver, FPGA field programmable gate array, central processing unit, Flash storer, data cache device SRAM, optical transceiver, data cache device SRAM, Flash storer are all connected with FPGA field programmable gate array, and FPGA field programmable gate array, the first reference clock chip, the second reference clock chip, GPS module are all connected with central processing unit.
When the utility model comes into operation, the first step, inspection, commissioning device: check gps antenna and GPS module, GPS module and optical-fibre channel data processing module, whether fibre-optic transmission system (FOTS) supervising device is connected normal with the hardware of aircraft inertial navigation system and other air environments, if there is extremely, corrected.Second step, adds electric test equipment: start power supply, confirm that whether fibre-optic transmission system (FOTS) supervising device, aircraft inertial navigation system and other air environment duties be normal, after equipment is normal, just come into operation, the 3rd step, carries out monitor task, and GPS module enters duty, and GPS module, by built-in ephemeris, determines that every satellite is in the position in this moment, when capturing satellite to be measured, and follows the tracks of the operation of these satellites, when GPS module captures after the satellite-signal of tracking, just can measure receiving antenna to the pseudo-distance of satellite and the rate of change of distance, demodulate the data such as satellite orbit parameter, according to these data, the core processor of GPS module just can position calculating by positioning calculation method, calculate the longitude and latitude of aircraft position, highly, speed, the information such as time, these information are passed to optical-fibre channel data processing module by GPS module, fibre-optic transmission system (FOTS) supervising device again by data by Optical Fiber Transmission to aircraft inertial navigation system, inertial navigation system is carried out basic point correction.
In the time that optical-fibre channel data processing module is worked, FPGA field programmable gate array is called in the configurator in Flash storer, to the modules of FPGA field programmable gate array and itself being configured; Optical transceiver converts the light signal receiving to electric signal, be transferred to FPGA field programmable gate array, FPGA field programmable gate array calls data cache device SRAM and coordinates data processing, whole process is carried out under the management of central processing unit, the first reference clock chip, the second reference clock chip provide work required sequential logic for central processing unit, thereby affect the frequency of operation of central processing unit.
Adopt Flash storer to carry out stored configuration program, system starts fast, data security, reliable; Adopt data cache device SRAM for FPGA provides data cache, be conducive to improve the ability of fibre-optic transmission system (FOTS) supervising device deal with data, to adapt to more high speed, more jumbo data transmission load; Adopt FPGA field programmable gate array, can be by the circuit logic of configuration FPGA field programmable gate array, increase or remove function, simultaneously fix-up logic leak or improve performance.Adopt the first reference clock chip, the second reference clock chip to provide working clock frequency for processor, carry out management function and give security for central processing unit also carries chip to FPGA field programmable gate array and other plates; Adopt optical transceiver to realize mutual conversion and the transmitting-receiving of light signal and electric signal, thus the seamless switching between the optical fiber telecommunications system of realization and electrical communication system.
Principle of work of the present utility model is exactly to utilize GPS to realize full spatial domain, round-the-clock meter level location to the object of motion or static object, thereby for aircraft inertial navigation system provides the coordinate basic point of working accurately, this basic point can dynamically be adjusted.Meter level location is very accurate to aloft aircraft.
The navigational system of aircraft is being carried out to coordinate basic point location with prior art, adopt original basic point to add that the technical scheme of inertial navigation system computational data compares, the utility model adopts gps antenna to add GPS module and carry out the precise positioning of the instantaneous static state of aircraft, thereby for aircraft provides dynamically, meter level coordinate basic point is located in real time, this locator meams is full-time sky, round-the-clock coordinate basic point location.
For further optimization, improve the aeronautical environment ability to work of GPS module, as preferentially, fibre-optic transmission system (FOTS) supervising device, the model of GPS module is MC-1612.
MC-1612 is the GPS module that aims at Aircraft Design, and core devices adopts TCXO, and under weak signal, search of satellite ability is strong; Its highest output, up to 10HZ, is supported 3 direction speed outputs, 2 meters of positioning precisioies; Have 12 passages, there is very strong anti-interference ability.
It is more than the further improvement of fibre-optic transmission system (FOTS) supervising device being obtained to gps data ability.The GPS location of the GPS contrast locating ground still life under empty day environment wants difficult a lot, is only adopted as the GPS module of empty day Environment Design, just can be more suitable for the GPS location of aircraft.
Those skilled in the art can freely select the model of GPS module according to the actual requirements.
For further optimization, improve the quality of data that GPS module receives, be convenient to GPS module and carry out signal sampling, as preferentially, fibre-optic transmission system (FOTS) supervising device, also comprises a prime amplifier, gps antenna connects prime amplifier, and prime amplifier connects GPS module.
Prime amplifier is exactly in the distortionless situation of assurance signal, and high frequency noise signal is filtered, and actual signal is amplified, and is conducive to the digital sample of subsequent conditioning circuit, thereby improves the signal quality receiving.
It is more than the further improvement of fibre-optic transmission system (FOTS) supervising device being obtained to high-quality gps signal ability.Adopt the noise signal that prime amplifier imports gps antenna into filter, thereby obtain clean gps signal, then signal is amplified, the circuit that is conducive to like this GPS module carries out signal sampling and computing, be conducive to obtain GPS information accurately, thereby improve the accurate of location.
Those skilled in the art can freely select the parameter of prime amplifier according to the actual requirements.
For further optimization, calendar is accurately provided to `GPS system, provide the time accurately to system, as preferentially, fibre-optic transmission system (FOTS) supervising device, also comprises a STC real-time clock, STC real-time clock connects optical-fibre channel data processing module.
The most important function of STC real-time clock is supplied to the calendar function in 2099, and simultaneously its precision can remain on every day error and is less than 0.50 second.
It is more than the further improvement to fibre-optic transmission system (FOTS) supervising device GPS almanac data accuracy supportability.Adopting the calendar function of STC real-time clock, can be that the ephemeris of GPS passes through calendar and time accurately, improves the ability of GPS position location satellite, thereby guarantees the accuracy of GPS location.Adopting STC real-time clock can be long distance, goes through service when the aircraft of flying for long time provides correct.
For further optimization, the functional reliability of STC real-time clock, stability and serviceable life, as preferentially, the model of STC real-time clock be in DS1302 and DS1307 any one.
DS1302 and DS1307 are the products of the DALLAS company of the U.S. of professional production manufacturer of STC real-time clock, they are high-performance, low-power consumption, real time clock circuit with RAM, they can to year, month, day, Sunday, time, minute, second carries out timing, has leap year compensate function.
It is more than the further improvement to fibre-optic transmission system (FOTS) supervising device GPS almanac data job stability supportability.Adopt the product of specialized vendor through long time running test, be conducive to the reliability and stability of safeguards system.
Those skilled in the art can freely select the model of STC real-time clock according to the actual requirements.
For further optimization, improve the circuit logic allocative abilities of PGA field programmable gate array, realize better systemic-function and circuit logic, as preferentially, FPGA field programmable gate array is Xilinx XC5VLX110T.
FPGA field programmable gate array, performance and the function of owned input-output unit able to programme, configurable logic block, digital dock administration module, embedded block RAM, interconnection resource, the embedded functional unit of bottom, the each module of embedded special stone directly depend on its acp chip.
It is more than the further improvement to the comprehensive configurable ability of fibre-optic transmission system (FOTS) supervising device.Xilinx is the technology enterprise in advance of FPGA field programmable gate array industry, Virtex-5 family chip is first 65nm FPGA product of the whole world that Xilinx company releases, use 1.0V tri-gate oxidation layer process, the ExpressFabric framework of exploitation of innovation is also realized ultimate Integrated.XC5VLX110T belongs to the LXT platform that the high performance logic of low-power consumption serial i/O is optimized.
Those skilled in the art can freely select the model of FPGA field programmable gate array according to the actual requirements.
For further optimization, improve the communication capacity of fibre-optic transmission system (FOTS) supervising device and computing machine, optical-fibre channel data processing module also comprises PCI-EXPRESS interface, PCI-EXPRESS interface connects FPGA field programmable gate array.
It is more than the further improvement to fibre-optic transmission system (FOTS) supervising device and computer data exchange capacity.PCI Express bus is point-to-point high-speed serial bus, and each PCI Express equipment has oneself independently data connection, has guaranteed the monopoly of passage, avoids the interference of other equipment.PCI Express bus is supported transmitted in both directions pattern, PCI Express bus every to data transfer bandwidth up to 4GB/s, bidirectional data transfers bandwidth has more than 8GB/s.
For further optimization, improve the fibre-optic transmission system (FOTS) supervising device managerial ability to the each module of system, as preferably, central processing unit is Cortex-M3 core ARM microprocessor LPC1769.
It is more than the further improvement of the system management ability to fibre-optic transmission system (FOTS) supervising device.Cortex-M3 core ARM microprocessor LPC1769, be the embedded market of Industry-oriented low-power consumption chip it there is JTAG interface, support JTAG debugging, special instruction tracing unit is provided.
Those skilled in the art can freely select the model of central processing unit according to the actual requirements.
For further optimization, improve light signal conversion and the transmitting-receiving ability of fibre-optic transmission system (FOTS) supervising device, as preferentially, the model of optical transceiver is FTRJ-8519-1-2.5.
More than data-signal conversion to fibre-optic transmission system (FOTS) supervising device and the further improvement of transmitting-receiving ability.Adopt the FTRJ-8519-1-2.5 of Finisar company optical transceiver, it adopts 850nm laser instrument, and 2.125Gbps transfer rate is provided, and has good shake and EMI characteristic.
Those skilled in the art's model of free selective light transceiver according to the actual requirements.
Compared with prior art, the beneficial effects of the utility model are:
1. the navigational system of aircraft is being carried out to coordinate basic point location with prior art, adopt original basic point to add that the technical scheme of inertial navigation system computational data compares, the utility model adopts gps antenna to add GPS module and carry out the precise positioning of the instantaneous static state of aircraft, thereby for aircraft provides dynamically, meter level coordinate basic point is located in real time, this locator meams is full-time sky, round-the-clock coordinate basic point location.
2. the utility model adopts the processor of ARM framework and the FPGA field programmable gate array of high allocative abilities to carry out integrated and each functional unit of management, it can be according to the fiber optic network situation of access, adjust configuration, simply, conveniently, powerful, this system can realize with low power monitoring and management of optical fibers network.
The utility model has solved the navigational system of aircraft and has carried out coordinate basic point location, adopt prior art cannot obtain dynamic basic point location, it can provide dynamically for aircraft, meter level coordinate basic point is located in real time, this locator meams is full-time sky, round-the-clock coordinate basic point location, has good industrial value.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the utility model, for a person skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, rather than all.The embodiment recording based on the utility model, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
Embodiment mono-:
As shown in Figure 1, the utility model, comprises optical-fibre channel data processing module, gps antenna, GPS module, and gps antenna connects GPS module, and GPS module connects optical-fibre channel data processing module; Optical-fibre channel data processing module comprises the first reference clock chip, the second reference clock chip, optical transceiver, FPGA field programmable gate array, central processing unit, Flash storer, data cache device SRAM, optical transceiver, data cache device SRAM, Flash storer are all connected with FPGA field programmable gate array, and FPGA field programmable gate array, the first reference clock chip, the second reference clock chip, GPS module are all connected with central processing unit.
Those skilled in the art can freely select according to the requirement of practice of construction environment and workpiece the parameter of assembly.
Embodiment bis-:
Obtain gps data ability in order to improve fibre-optic transmission system (FOTS) supervising device, the present embodiment improves further on the basis of embodiment mono-, and the model of the GPS module of the present embodiment is MC-1612.
Those skilled in the art can freely select the model of GPS module according to the actual requirements.
Embodiment tri-:
Obtain high-quality gps signal ability in order to improve fibre-optic transmission system (FOTS) supervising device, the present embodiment improves further on the basis of any one embodiment of embodiment mono-～bis-, the fibre-optic transmission system (FOTS) supervising device of the present embodiment, also comprise a prime amplifier, gps antenna connects prime amplifier, and prime amplifier connects GPS module.
Those skilled in the art can freely select the parameter of prime amplifier according to the actual requirements.
Embodiment tetra-:
In order to improve fibre-optic transmission system (FOTS) supervising device GPS almanac data accuracy supportability, the present embodiment improves further on the basis of any one embodiment of embodiment mono-～tri-, the fibre-optic transmission system (FOTS) supervising device of the present embodiment, also comprise a STC real-time clock, STC real-time clock connects optical-fibre channel data processing module.
Embodiment five:
In order to improve fibre-optic transmission system (FOTS) supervising device GPS almanac data job stability supportability, the present embodiment on the basis of embodiment tetra-further improve, the model of the STC real-time clock of the present embodiment be in DS1302 and DS1307 any one.
Those skilled in the art can freely select the model of STC real-time clock according to the actual requirements.
Embodiment six:
In order to improve the comprehensive configurable ability of fibre-optic transmission system (FOTS) supervising device, the present embodiment improves further on the basis of embodiment mono-～five, and the FPGA field programmable gate array of the present embodiment is Xilinx XC5VLX110T.
Those skilled in the art can freely select the model of FPGA field programmable gate array according to the actual requirements.
Embodiment seven:
In order to improve fibre-optic transmission system (FOTS) monitoring dress and computer data exchange capacity, the present embodiment improves further on the basis of any one embodiment of embodiment mono-～seven, the optical-fibre channel data processing module of the present embodiment also comprises PCI-EXPRESS interface, and PCI-EXPRESS interface connects FPGA field programmable gate array.
Embodiment eight:
In order to improve the system management ability of fibre-optic transmission system (FOTS) supervising device, the present embodiment improves further on the basis of any one embodiment of embodiment mono-～eight, and the central processing unit of the optical-fibre channel data processing module of the present embodiment is Cortex-M3 core ARM microprocessor LPC1769.
Those skilled in the art can freely select the model of central processing unit according to the actual requirements.
Embodiment nine:
In order to improve data-signal conversion and the transmitting-receiving ability of fibre-optic transmission system (FOTS) supervising device, the present embodiment improves further on the basis of any one embodiment of embodiment mono-～nine, and the model of the optical transceiver of the optical-fibre channel data processing module of the present embodiment is FTRJ-8519-1-2.5.
Those skilled in the art's model of free selective light transceiver according to the actual requirements.
Just can realize as mentioned above this utility model.
Claims (9)
1.
?fibre-optic transmission system (FOTS) supervising device, is characterized in that: comprise optical-fibre channel data processing module, gps antenna, and GPS module, described gps antenna connects GPS module, and described GPS module connects optical-fibre channel data processing module;
Described optical-fibre channel data processing module comprises the first reference clock chip, the second reference clock chip, optical transceiver, FPGA field programmable gate array, central processing unit, Flash storer, data cache device SRAM, described optical transceiver, data cache device SRAM, Flash storer are all connected with FPGA field programmable gate array, and described FPGA field programmable gate array, the first reference clock chip, the second reference clock chip, GPS module are all connected with central processing unit.
2. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: the model of described GPS module is MC-1612.
3. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: also comprise a prime amplifier, gps antenna connects prime amplifier, and described prime amplifier connects GPS module.
4. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: also comprise a STC real-time clock, described STC real-time clock connects optical-fibre channel data processing module.
5. fibre-optic transmission system (FOTS) supervising device according to claim 4, is characterized in that: the model of described STC real-time clock be in DS1302 and DS1307 any one.
6. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: described FPGA field programmable gate array is Xilinx XC5VLX110T.
7. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: described optical-fibre channel data processing module also comprises PCI-EXPRESS interface, and described PCI-EXPRESS interface connects FPGA field programmable gate array.
8. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: described central processing unit is Cortex-M3 core ARM microprocessor LPC1769.
9. fibre-optic transmission system (FOTS) supervising device according to claim 1, is characterized in that: the model of described optical transceiver is FTRJ-8519-1-2.5.
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| CN201320565038.4U CN203630955U (en) | 2013-09-12 | 2013-09-12 | Monitoring device for optical fiber transmission system |
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| CN201320565038.4U CN203630955U (en) | 2013-09-12 | 2013-09-12 | Monitoring device for optical fiber transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475408A (en) * | 2013-09-12 | 2013-12-25 | 成都成电光信科技有限责任公司 | Optical fiber network system monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475408A (en) * | 2013-09-12 | 2013-12-25 | 成都成电光信科技有限责任公司 | Optical fiber network system monitoring device |
| CN103475408B (en) * | 2013-09-12 | 2016-02-10 | 成都成电光信科技有限责任公司 | Optical fiber network system supervising device |
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Address after: High tech Zone Tianchen road Chengdu City, Sichuan province 610000 No. 88 Patentee after: CHENGDU UESTC OPTICAL COMMUNICATION CO.,LTD. Address before: High tech Zone Tianchen road Chengdu City, Sichuan province 610000 No. 88 Patentee before: CHENGDU CHENGDIAN GUANGXIN TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20140604 |