CN114124208A - Optical fiber code identification system and method for eliminating physical point noise interference - Google Patents
Optical fiber code identification system and method for eliminating physical point noise interference Download PDFInfo
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/508—Pulse generation, e.g. generation of solitons
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0602—Systems characterised by the synchronising information used
- H04J3/0617—Systems characterised by the synchronising information used the synchronising signal being characterised by the frequency or phase
Abstract
The invention discloses an optical fiber code recognition system and method for eliminating physical point noise interference, wherein the optical fiber code recognition system comprises: a high-speed core processing module; the narrow-spectrum light source and the wide-spectrum light source are respectively electrically connected with the high-speed core processing module; the first wavelength division multiplexer is respectively connected with the narrow-spectrum light source and the wide-spectrum light source through optical fibers; a first lightwave pulse generator; the circulator is used for realizing light wave transmission according to a path, the input end of the circulator is connected with the first light wave pulse generator, and the output end of the circulator is used for connecting a light ray coding product with a physical point; a second lightwave pulse generator; a second wavelength division multiplexer; a spectrum recognition device; a photoelectric conversion module; and a high-speed acquisition module. According to the scheme, the optical fiber codes have certain difference between the time domain position and the time domain position of the physical point, noise interference caused by the physical point is eliminated, and compared with the prior art, the product operation amount can be reduced, the optical fiber code recognition efficiency is improved, the optical fiber code recognition accuracy is improved, and the like.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to an optical fiber code identification system and method for eliminating physical point noise interference.
Background
In the existing optical fiber code identification, because a plurality of optical fiber codes are connected with physical points such as physical connection points and physical tail end terminals, frequency domain spectrum waveforms generated by the physical points have certain similarity with spectrum waveforms generated by the optical fiber codes, the existing method for eliminating by using software and the method which are difficult to eliminate cause the problems of large optical fiber code identification computation amount, overlarge noise and the like, and the part of noise needs to be eliminated integrally from the aspects of the method and the system.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an optical fiber code identification system and method for eliminating physical point noise interference, which solve the problem that the existing software algorithm is difficult to eliminate the physical point noise interference.
According to an embodiment of the first aspect of the invention, an optical fiber code identification system for eliminating physical point noise interference comprises: a high-speed core processing module; the narrow-spectrum light source and the wide-spectrum light source are respectively electrically connected with the high-speed core processing module; the first wavelength division multiplexer is respectively connected with the narrow-spectrum light source and the wide-spectrum light source through optical fibers; the first optical wave pulse generator is electrically connected with the high-speed core processing module and is connected with the output end of the first wavelength division multiplexer through an optical fiber; the circulator is used for realizing light wave transmission according to a path, the input end of the circulator is connected with the first light wave pulse generator, and the output end of the circulator is used for connecting a light ray coding product with a physical point; the second light wave pulse generator is electrically connected with the high-speed core processing module and is connected with the reflection output end of the circulator through an optical fiber; the input end of the second wavelength division multiplexer is connected with the second light wave pulse generator; the spectrum identification device is connected between the first output end of the second wavelength division multiplexer and the high-speed core processing module; the input end of the photoelectric conversion module is connected with the second output end of the second wavelength division multiplexer; and the high-speed acquisition module is connected between the photoelectric conversion module and the high-speed core processing module.
The optical fiber code identification system for eliminating the noise interference of the physical point according to the embodiment of the first aspect of the invention has at least the following beneficial effects: according to the scheme, the optical fiber codes have certain difference between the time domain position and the time domain position of the physical point, noise interference caused by the physical point is eliminated, and compared with the prior art, the product operation amount can be reduced, the optical fiber code recognition efficiency is improved, the optical fiber code recognition accuracy is improved, and the like.
According to some embodiments of the first aspect of the present invention, the light-coded product is an optical fiber-coded intelligent jumper fiber, an optical fiber-coded intelligent pigtail fiber, or an optical fiber-coded fault locator.
According to some embodiments of the first aspect of the present invention, the first and second optical wave pulse generators each employ a high speed optical switch, a modem, or a semiconductor amplifier.
According to the second aspect of the invention, the optical fiber code identification system for eliminating the physical point noise interference comprises: a high-speed core processing module; the narrow-spectrum light source and the wide-spectrum light source are respectively electrically connected with the high-speed core processing module; the first wavelength division multiplexer is respectively connected with the narrow-spectrum light source and the wide-spectrum light source through optical fibers; the first optical wave pulse generator is electrically connected with the high-speed core processing module and is connected with the output end of the first wavelength division multiplexer through an optical fiber; the circulator is used for realizing the transmission of light waves according to a path, and the input end of the circulator is connected with the first light wave pulse generator; the second light wave pulse generator is electrically connected with the high-speed core processing module and is connected with the reflection output end of the circulator through an optical fiber; the first end of the second wavelength division multiplexer is connected with the circulator, and the second end of the second wavelength division multiplexer is used for connecting the light ray coding product of the physical point; the spectrum identification device is connected between the output end of the second lightwave pulse generator and the high-speed core processing module; the input end of the photoelectric conversion module is connected with the third end of the second wavelength division multiplexer; and the high-speed acquisition module is connected between the photoelectric conversion module and the high-speed core processing module.
According to the third aspect of the invention, the optical fiber code identification method for eliminating the noise interference of the physical point is characterized in that: the optical fiber code identification system comprises the following steps: the high-speed core processing module drives the narrow-spectrum light source and the wide-spectrum light source to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer; the high-speed core processing module respectively drives a first light wave pulse generator and a second light wave pulse generator according to a preset time sequence, wherein the opening time difference of the first light wave pulse generator and the second light wave pulse generator is the length of the collected optical fiber or the optical fiber coding position; the first light wave pulse generator modulates the mixed light wave into a first pulse light wave, the first pulse light wave enters an optical fiber coding product through a circulator and is reflected by optical fiber codes respectively; the circulator inputs the reflected light wave into a second light wave pulse generator to be modulated into a second pulse light wave; the second wavelength division multiplexer decomposes the second pulse light wave into light waves with different wavelengths and respectively outputs the light waves to the spectrum recognition device and the photoelectric conversion module; the photoelectric conversion module converts light waves into electric signals and transmits the electric signals to the high-speed acquisition module, the high-speed core processing module acquires the electric signal data acquired by the spectrum identification device and the high-speed acquisition module in real time and marks the acquired electric signal data, and the length of the electric signal data is the time difference of the opening of the first light wave pulse generator and the second light wave pulse generator; the energy acquired by the high-speed acquisition module signal is suddenly increased, so that the acquired electric signal data can be considered as physical point data, and the electric signal data acquired by the spectrum identification device at the acquisition time point is synchronously deleted.
According to some embodiments of the third aspect of the invention, the preset timing comprises: the time difference between the first optical wave pulse generator and the second optical wave pulse generator is n T0, and the pulse light wave width generated by the first optical wave pulse generator and the second optical wave pulse generator is k T0; the narrow-spectrum light source and the wide-spectrum light source are controlled by the high-speed core processing module, synchronously emit light for a long time, the light emitting time is longer than n T0, and the acquisition time of the spectrum identification device is longer than k T0.
According to a fourth aspect of the invention, an optical fiber code identification method for eliminating physical point noise interference is characterized in that: the optical fiber code identification system comprises the following steps: the high-speed core processing module drives the narrow-spectrum light source and the wide-spectrum light source to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer; the high-speed core processing module respectively drives a first light wave pulse generator and a second light wave pulse generator according to a preset time sequence, wherein the opening time difference of the first light wave pulse generator and the second light wave pulse generator is the length of the collected optical fiber or the optical fiber coding position; the first light wave pulse generator modulates the mixed light wave into a first pulse light wave, and the first pulse light wave enters an optical fiber coding product through the circulator and the second wavelength division multiplexer and is reflected by optical fiber codes respectively; the second wavelength division multiplexer outputs a part of the reflected light waves to the second light wave pulse generator through the circulator and modulates the reflected light waves into second pulse light waves, and the second pulse light waves are output to the spectrum identification device; the second wavelength division multiplexer outputs a part of the reflected light waves to the photoelectric conversion module; the photoelectric conversion module converts light waves into electric signals and transmits the electric signals to the high-speed acquisition module, the high-speed core processing module acquires the electric signal data acquired by the spectrum identification device and the high-speed acquisition module in real time and marks the acquired electric signal data, and the length of the electric signal data is the time difference of the opening of the first light wave pulse generator and the second light wave pulse generator; the energy acquired by the high-speed acquisition module signal is suddenly increased, so that the acquired electric signal data can be considered as physical point data, and the electric signal data acquired by the spectrum identification device at the acquisition time point is synchronously deleted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an optical fiber encoding identification system according to an embodiment of the first aspect of the present invention;
FIG. 2 is a schematic diagram of an optical fiber encoding identification system according to an embodiment of the second aspect of the present invention;
fig. 3 is a schematic diagram of a system operation timing sequence according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The physical point referred by the scheme is the position with refractive index difference between the tail end of the optical fiber medium and substances such as air, light waves can form reflection when being injected, the reflection spectrum is relatively complex, and the reflection waveform and the optical fiber code have a certain identification degree. The optical fiber adopts light sources of different light waves to emit into the optical fiber, the optical fiber reflects the light waves at the physical point, and the light waves at the time point are directly deleted in a frequency domain as the physical point, so that the aim of deleting noise is fulfilled.
Referring to fig. 1, an optical fiber coding identification system for eliminating physical point noise interference according to an embodiment of a first aspect of the present disclosure includes:
the high-speed core processing module 100 is used for controlling the narrow-spectrum light source and the wide-spectrum light source to synchronously emit light; driving two light wave pulse generators to send pulse light waves according to time sequence requirements, collecting data signals of a spectrum recognition device and a high-speed collection module in real time, analyzing optical fiber coded data and the position of a physical point, and deleting the position data of the physical point according to system setting to realize synchronous collection, analysis and processing of a time domain and a frequency domain;
the narrow-spectrum light source 210 and the wide-spectrum light source 220 are respectively electrically connected with the high-speed core processing module 100, the high-speed core processing module 100 controls the narrow-spectrum light source 210 and the wide-spectrum light source 220 to synchronously emit light, the light emitting time is longer than n x T0, wherein the central wavelength of the narrow-spectrum light source 210 is 1650 +/-1 nm preferably, and the wavelength range of the wide-spectrum light source 220 adopts 1510-1590 nm;
the first wavelength division multiplexer 310 is respectively connected with the narrow-spectrum light source 210 and the wide-spectrum light source 220 through optical fibers and used for mixing light waves with different wavelengths;
a first optical wave pulse generator 410, electrically connected to the high-speed core processing module 100, and connected to the output end of the first wavelength division multiplexer 310 through an optical fiber, for outputting a pulsed optical wave;
the circulator 500 is used for realizing light wave transmission according to a path, the input end of the circulator is connected with the first light wave pulse generator 410, the output end of the circulator is used for connecting a light ray coding product with a physical point 910, the light ray coding product is provided with an optical fiber code 920, and the optical fiber code 920 is a unique light wave wavelength sequence consisting of optical fiber gratings with different central wavelengths;
a second light wave pulse generator 420 electrically connected to the high-speed core processing module 100, and connected to the reflection output end of the circulator 500 through an optical fiber, for outputting a pulse light wave;
a second wavelength division multiplexer 320, the input end of which is connected to the second optical wave pulse generator 420, for separating the optical waves with different wavelengths;
the spectrum identification device 600 is connected between the first output end of the second wavelength division multiplexer 320 and the high-speed core processing module 100, and can realize spectrum identification of light waves and energy identification of corresponding wavelengths; because the conventional spectrum identification device 600 has a small acquisition period and cannot meet the requirement of high-speed light wave acquisition, two light wave pulse generators, namely a first light wave pulse generator 410 and a second light wave pulse generator 420, are added to generate high-speed light wave pulses so as to realize the light wave acquisition with high spatial resolution;
the input end of the photoelectric conversion module 700 is connected to the second output end of the second wavelength division multiplexer 320, and is used for realizing energy collection of light waves;
and a high-speed acquisition module 800 connected between the photoelectric conversion module 700 and the high-speed core processing module 100, for acquiring the electrical signal output by the photoelectric conversion module 700 and feeding back the electrical signal to the high-speed core processing module 100.
When the high-speed core processing module 100 works, the narrow-spectrum light source 210 and the wide-spectrum light source 220 are driven to synchronously emit light, and light waves are mixed by the first wavelength division multiplexer 310; the high-speed core processing module 100 respectively drives the first optical pulse generator 410 and the second optical pulse generator 420 according to a preset time sequence, wherein a time difference n x T0 between the first optical pulse generator 410 and the second optical pulse generator 420 is the length of the collected optical fiber or the optical fiber coding position; the first light wave pulse generator 410 modulates the mixed light wave into a first pulse light wave, and the first pulse light wave enters an optical fiber coding product through the circulator 500 and is respectively reflected by optical fiber codes; the circulator 500 inputs the reflected light wave to the second light wave pulse generator 420 to be modulated into a second pulse light wave; the second wavelength division multiplexer 320 decomposes the second pulse light wave into light waves with different wavelengths, and outputs the light waves to the spectrum identification device 600 and the photoelectric conversion module 700 respectively; the photoelectric conversion module 700 converts the light waves into electrical signals and transmits the electrical signals to the high-speed acquisition module 800, and the high-speed core processing module 100 acquires the electrical signal data acquired by the spectrum identification device 600 and the high-speed acquisition module 800 in real time and labels the acquired electrical signal data, wherein the length of the electrical signal data is the time difference between the opening of the first light wave pulse generator 410 and the opening of the second light wave pulse generator 420; when the energy acquired by the high-speed acquisition module 800 is suddenly increased, the acquired electrical signal data can be regarded as physical point data, and the electrical signal data acquired by the spectrum identification device 600 at the acquisition time point is synchronously deleted.
For example: the narrow-spectrum light source 210 is 1650nm, the wide-spectrum light source 220 is 1510-1590nm, the central wavelength of the optical fiber code 920 is 1510-1590nm, the optical fiber code 920 only reflects the light waves in the sections of 1510-1590nm, the physical point 910 can reflect the light waves in the sections of 1650nm and 1510-1590nm, the measuring point with increased energy acquired by the high-speed acquisition module 800 and the spectrum identification device 600 can be deleted, the function of directly deleting the measuring data of the physical point is achieved, and direct noise reduction is achieved.
As described above, in the present solution, by using a certain difference between the time domain position of the optical fiber code 920 and the time domain position of the physical point 910, the noise interference caused by the physical point 910 is eliminated, and compared with the prior art, the product computation amount can be reduced, the optical fiber code recognition efficiency can be improved, and the optical fiber code recognition accuracy can be improved.
In some embodiments of the first aspect of the present invention, the optical fiber coding product is an optical fiber coding intelligent jumper, an optical fiber coding intelligent pigtail or an optical fiber coding fault locator, or other existing optical fiber coding products. In order to realize the comprehensive elimination of physical point noise in time domain and frequency domain, the distance between the optical fiber code and the end of the optical fiber code product is required to be larger than T0 lambda/(r 2), wherein lambda is the optical speed, and r is the group refractive index. For example: t0-4.1667 ns, λ 299792458 m/s, r 1.4678, one T0 pulse corresponds to a fiber length of 0.4255 m, and the minimum distance from the end of the product to the fiber code is 0.4255 m.
Further, in some embodiments of the first aspect of the present invention, the first lightwave pulse generator 410 and the second lightwave pulse generator 420 both employ high-speed optical switches, modems, or semiconductor amplifiers. In view of the required spectral width of the system, which is approximately 80nm, semiconductor amplifiers are preferred for this purpose, which can be pulsed at high speed up to 1 ns.
Wherein, T00 is the waiting time after the first light wave pulse generator 410 sends the first identification light wave, and waits for the round-trip transmission time of the light wave in the optical fiber, so as to avoid the superposition of the light wave during the second collection. For example: the acquisition period of the existing optical fiber code demodulator is 15kHZ, which cannot meet the requirement of high-speed light wave acquisition, for this reason, two semiconductor amplifiers are used to generate high-speed low-pulse light waves, as shown in fig. 3, the first light wave pulse generator 410 and the second light wave pulse generator 420 generate pulse light waves of k x T0, and the acquisition time of the spectrum identification device 600 is longer than k x T0; when the first optical pulse generator 410 generates light waves of k × T0, the second optical pulse generator 420 generates light waves of k × T0 after n × T0 intervals, and the spectrum recognition device 600 collects the light waves at the position of the optical fiber at a distance of n × T0 × λ/(r 2) meters from the first optical pulse generator 410, and when n is increased from 1 to infinity, the spectrum recognition device 600 covers all the optical fibers, and when n is increased from 1 to infinity, the light waves at 1 × 0.4255 meters are collected at the first time, the light waves at 2 × 0.4255 meters are collected at the second time n 2, and the light waves at 3 × 0.4255 meters are collected at the second time n × 3, and are successively superposed, so that the optical fibers are decomposed into a plurality of small segments according to T0 × λ/(r × 2) meters (i.e., 0.4255 meters). The photoelectric conversion module 700 can achieve a high-speed acquisition state, and acquires the whole section of the optical fiber by adopting an acquisition period of T0.
As shown in fig. 2, an optical fiber code identification system for eliminating physical point noise interference according to an embodiment of the second aspect of the present invention includes: a high speed core processing module 100; a narrow-spectrum light source 210 and a wide-spectrum light source 220, which are electrically connected to the high-speed core processing module 100, respectively; a first wavelength division multiplexer 310, which is respectively connected with the narrow spectrum light source 210 and the wide spectrum light source 220 through optical fibers; a first optical wave pulse generator 410 electrically connected to the high-speed core processing module 100 and connected to the output end of the first wavelength division multiplexer 310 through an optical fiber; a circulator 500 for implementing optical wave transmission according to a path, an input end of the circulator being connected to the first optical wave pulse generator 410; a second optical pulse generator 420 electrically connected to the high-speed core processing module 100 and connected to the reflective output end of the circulator 500 through an optical fiber; a second wavelength division multiplexer 320, a first end of which is connected to the circulator 500 and a second end of which is used for connecting the light ray coding product of the physical point; the spectrum identification device 600 is connected between the output end of the second lightwave pulse generator 420 and the high-speed core processing module 100; a photoelectric conversion module 700, an input end of which is connected to a third end of the second wavelength division multiplexer 320; the high-speed acquisition module 800 is connected between the photoelectric conversion module 700 and the high-speed core processing module 100.
As can be seen from fig. 1 and fig. 2, the main difference between this embodiment and the embodiment of the first aspect of the present invention is that the photoelectric conversion module 700 is located, and the photoelectric conversion module 700 in fig. 1 is located at the rear end of the second optical wave pulse generator 420, so that the optical waves are synchronously separated after passing through the second optical wave pulse generator 420, and complete optical wave synchronous acquisition is realized; the photoelectric conversion module 700 and the second optical wave pulse generator 420 in fig. 2 are in a parallel state, and the optical wave is decomposed into two different optical waves by the second wavelength division multiplexer 320, one of the two optical waves enters the second optical wave pulse generator 420 through the circulator 500, and the other optical wave directly enters the photoelectric conversion module 700 for photoelectric conversion and collection. Both the two ways can realize the denoising of the physical point, but the second lightwave pulse generator 420 in fig. 1 increases the corresponding noise collected by the photoelectric conversion module 700, but the noise has consistency; the embodiment of fig. 2 is preferred for the reason that the synchronization inconsistency caused by the second lightwave pulse generator 420 exists in the embodiment of fig. 1.
The invention also includes a fiber code identification method for eliminating physical point noise interference of the third aspect embodiment, which is applied to the fiber code identification system of the first aspect embodiment and comprises the following steps: the high-speed core processing module 100 drives the narrow-spectrum light source 210 and the wide-spectrum light source 220 to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer 310; the high-speed core processing module 100 respectively drives the first optical wave pulse generator 410 and the second optical wave pulse generator 420 according to a preset time sequence, wherein the time difference of the opening of the first optical wave pulse generator 410 and the second optical wave pulse generator 420 is the length of the collected optical fiber or the optical fiber coding position; the first light wave pulse generator 410 modulates the mixed light wave into a first pulse light wave, and the first pulse light wave enters an optical fiber coding product through the circulator 500 and is respectively reflected by optical fiber codes; the circulator 500 inputs the reflected light wave to the second light wave pulse generator 420 to be modulated into a second pulse light wave; the second wavelength division multiplexer 320 decomposes the second pulse light wave into light waves with different wavelengths, and outputs the light waves to the spectrum identification device 600 and the photoelectric conversion module 700 respectively; the photoelectric conversion module 700 converts the light waves into electrical signals and transmits the electrical signals to the high-speed acquisition module 800, and the high-speed core processing module 100 acquires the electrical signal data acquired by the spectrum identification device 600 and the high-speed acquisition module 800 in real time and labels the acquired electrical signal data, wherein the length of the electrical signal data is the time difference between the opening of the first light wave pulse generator 410 and the opening of the second light wave pulse generator 420; when the energy acquired by the high-speed acquisition module 800 is suddenly increased, the acquired electrical signal data can be regarded as physical point data, and the electrical signal data acquired by the spectrum identification device 600 at the acquisition time point is synchronously deleted.
In some embodiments of the third aspect of the present invention, the preset timing comprises: the time difference between the first optical wave pulse generator 410 and the second optical wave pulse generator 420 is n x T0, and the pulse optical wave width generated by the first optical wave pulse generator 410 and the second optical wave pulse generator 420 is k x T0; the narrow-spectrum light source 210 and the wide-spectrum light source 220 are controlled by the high-speed core processing module 100, emit light synchronously for a long time, the light emitting time is longer than n x T0, and the collection time of the spectrum identification device 600 is longer than k x T0.
The invention also includes a fiber code identification method for eliminating physical point noise interference of the fourth aspect embodiment, which is applied to the fiber code identification system of the second aspect embodiment and comprises the following steps: the high-speed core processing module 100 drives the narrow-spectrum light source 210 and the wide-spectrum light source 220 to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer 310; the high-speed core processing module 100 respectively drives the first optical wave pulse generator 410 and the second optical wave pulse generator 420 according to a preset time sequence, wherein the time difference of the opening of the first optical wave pulse generator 410 and the second optical wave pulse generator 420 is the length of the collected optical fiber or the optical fiber coding position; the first light wave pulse generator 410 modulates the mixed light wave into a first pulse light wave, and the first pulse light wave enters an optical fiber coding product through the circulator 500 and the second wavelength division multiplexer 320 and is respectively reflected by optical fiber codes; the second wavelength division multiplexer 320 outputs a part of the reflected light waves to the second light wave pulse generator 420 through the circulator 500 and modulates the reflected light waves into second pulse light waves, and the second pulse light waves are output to the spectrum identification device 600; the second wavelength division multiplexer 320 outputs a part of the reflected light waves to the photoelectric conversion module 700; the photoelectric conversion module 700 converts the light waves into electrical signals and transmits the electrical signals to the high-speed acquisition module 800, and the high-speed core processing module 100 acquires the electrical signal data acquired by the spectrum identification device 600 and the high-speed acquisition module 800 in real time and labels the acquired electrical signal data, wherein the length of the electrical signal data is the time difference between the opening of the first light wave pulse generator 410 and the opening of the second light wave pulse generator 420; when the energy acquired by the high-speed acquisition module 800 is suddenly increased, the acquired electrical signal data can be regarded as physical point data, and the electrical signal data acquired by the spectrum identification device 600 at the acquisition time point is synchronously deleted.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An optical fiber code identification system for eliminating noise interference of a physical point, comprising:
a high-speed core processing module;
the narrow-spectrum light source and the wide-spectrum light source are respectively electrically connected with the high-speed core processing module;
the first wavelength division multiplexer is respectively connected with the narrow-spectrum light source and the wide-spectrum light source through optical fibers;
the first optical wave pulse generator is electrically connected with the high-speed core processing module and is connected with the output end of the first wavelength division multiplexer through an optical fiber;
the circulator is used for realizing light wave transmission according to a path, the input end of the circulator is connected with the first light wave pulse generator, and the output end of the circulator is used for connecting a light ray coding product with a physical point;
the second light wave pulse generator is electrically connected with the high-speed core processing module and is connected with the reflection output end of the circulator through an optical fiber;
the input end of the second wavelength division multiplexer is connected with the second light wave pulse generator;
the spectrum identification device is connected between the first output end of the second wavelength division multiplexer and the high-speed core processing module;
the input end of the photoelectric conversion module is connected with the second output end of the second wavelength division multiplexer;
and the high-speed acquisition module is connected between the photoelectric conversion module and the high-speed core processing module.
2. The optical fiber code identification system for eliminating the noise interference of the physical point as claimed in claim 1, wherein: the light coding product is an optical fiber coding intelligent jumping fiber, an optical fiber coding intelligent tail fiber or an optical fiber coding fault locator.
3. The optical fiber code identification system for eliminating the noise interference of the physical point as claimed in claim 1, wherein: the first light wave pulse generator and the second light wave pulse generator adopt a high-speed optical switch, a modem or a semiconductor amplifier.
4. An optical fiber code identification system for eliminating noise interference of a physical point, comprising:
a high-speed core processing module;
the narrow-spectrum light source and the wide-spectrum light source are respectively electrically connected with the high-speed core processing module;
the first wavelength division multiplexer is respectively connected with the narrow-spectrum light source and the wide-spectrum light source through optical fibers;
the first optical wave pulse generator is electrically connected with the high-speed core processing module and is connected with the output end of the first wavelength division multiplexer through an optical fiber;
the circulator is used for realizing the transmission of light waves according to a path, and the input end of the circulator is connected with the first light wave pulse generator;
the second light wave pulse generator is electrically connected with the high-speed core processing module and is connected with the reflection output end of the circulator through an optical fiber;
the first end of the second wavelength division multiplexer is connected with the circulator, and the second end of the second wavelength division multiplexer is used for connecting the light ray coding product of the physical point;
the spectrum identification device is connected between the output end of the second lightwave pulse generator and the high-speed core processing module;
the input end of the photoelectric conversion module is connected with the third end of the second wavelength division multiplexer;
and the high-speed acquisition module is connected between the photoelectric conversion module and the high-speed core processing module.
5. The optical fiber code identification system for eliminating the noise interference of the physical point as claimed in claim 4, wherein: the light coding product is an optical fiber coding intelligent jumping fiber, an optical fiber coding intelligent tail fiber or an optical fiber coding fault locator.
6. The optical fiber code identification system for eliminating the noise interference of the physical point as claimed in claim 4, wherein: the first light wave pulse generator and the second light wave pulse generator adopt a high-speed optical switch, a modem or a semiconductor amplifier.
7. An optical fiber code identification method for eliminating noise interference of physical points is characterized in that: the optical fiber code identification system applied to any one of claims 1 to 3, comprising the following steps:
the high-speed core processing module drives the narrow-spectrum light source and the wide-spectrum light source to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer;
the high-speed core processing module respectively drives a first light wave pulse generator and a second light wave pulse generator according to a preset time sequence, wherein the opening time difference of the first light wave pulse generator and the second light wave pulse generator is the length of the collected optical fiber or the optical fiber coding position;
the first light wave pulse generator modulates the mixed light wave into a first pulse light wave, the first pulse light wave enters an optical fiber coding product through a circulator and is reflected by optical fiber codes respectively;
the circulator inputs the reflected light wave into a second light wave pulse generator to be modulated into a second pulse light wave;
the second wavelength division multiplexer decomposes the second pulse light wave into light waves with different wavelengths and respectively outputs the light waves to the spectrum recognition device and the photoelectric conversion module;
the photoelectric conversion module converts light waves into electric signals and transmits the electric signals to the high-speed acquisition module, the high-speed core processing module acquires the electric signal data acquired by the spectrum identification device and the high-speed acquisition module in real time and marks the acquired electric signal data, and the length of the electric signal data is the time difference of the opening of the first light wave pulse generator and the second light wave pulse generator;
the energy acquired by the high-speed acquisition module signal is suddenly increased, so that the acquired electric signal data can be considered as physical point data, and the electric signal data acquired by the spectrum identification device at the acquisition time point is synchronously deleted.
8. The method for identifying an optical fiber code for eliminating noise interference of a physical point as claimed in claim 7, wherein: the preset time sequence comprises the following steps: the time difference between the first optical wave pulse generator and the second optical wave pulse generator is n T0, and the pulse light wave width generated by the first optical wave pulse generator and the second optical wave pulse generator is k T0;
the narrow-spectrum light source and the wide-spectrum light source are controlled by the high-speed core processing module, synchronously emit light for a long time, the light emitting time is longer than n T0, and the acquisition time of the spectrum identification device is longer than k T0.
9. An optical fiber code identification method for eliminating noise interference of physical points is characterized in that: the fiber-optic code identification system applied to any one of claims 4 to 6, comprising the following steps:
the high-speed core processing module drives the narrow-spectrum light source and the wide-spectrum light source to synchronously emit light, and the light waves are mixed by the first wavelength division multiplexer;
the high-speed core processing module respectively drives a first light wave pulse generator and a second light wave pulse generator according to a preset time sequence, wherein the opening time difference of the first light wave pulse generator and the second light wave pulse generator is the length of the collected optical fiber or the optical fiber coding position;
the first light wave pulse generator modulates the mixed light wave into a first pulse light wave, and the first pulse light wave enters an optical fiber coding product through the circulator and the second wavelength division multiplexer and is reflected by optical fiber codes respectively;
the second wavelength division multiplexer outputs a part of the reflected light waves to the second light wave pulse generator through the circulator and modulates the reflected light waves into second pulse light waves, and the second pulse light waves are output to the spectrum identification device;
the second wavelength division multiplexer outputs a part of the reflected light waves to the photoelectric conversion module;
the photoelectric conversion module converts light waves into electric signals and transmits the electric signals to the high-speed acquisition module, the high-speed core processing module acquires the electric signal data acquired by the spectrum identification device and the high-speed acquisition module in real time and marks the acquired electric signal data, and the length of the electric signal data is the time difference of the opening of the first light wave pulse generator and the second light wave pulse generator;
the energy acquired by the high-speed acquisition module signal is suddenly increased, so that the acquired electric signal data can be considered as physical point data, and the electric signal data acquired by the spectrum identification device at the acquisition time point is synchronously deleted.
10. The method for identifying an optical fiber code for eliminating noise interference of a physical point as claimed in claim 9, wherein: the preset time sequence comprises the following steps: the time difference between the first optical wave pulse generator and the second optical wave pulse generator is n T0, and the pulse light wave width generated by the first optical wave pulse generator and the second optical wave pulse generator is k T0;
the narrow-spectrum light source and the wide-spectrum light source are controlled by the high-speed core processing module, synchronously emit light for a long time, the light emitting time is longer than n T0, and the acquisition time of the spectrum identification device is longer than k T0.
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