阅读说明：本技术 同波长编码识别系统、方法、装置及存储介质 (Same wavelength code identification system, method, device and storage medium ) 是由 朱惠君 薛鹏 白金刚 毛志松 邬耀华 于 2020-06-22 设计创作，主要内容包括：本发明公开了同波长编码识别系统、方法、装置及存储介质,其中同波长编码识别系统,包括主控模块、窄带光源、滤波器、环形器、同波长光纤反射编码组和光电探测器,所述环形器包括第一端、第二端和第三端,所述窄带光源、所述滤波器与所述环形器的第一端依次连接,所述同波长光纤反射编码组通过光纤与所述环形器的第二端连接,所述光电探测器的输入端与所述环形器的第三端连接,所述光电探测器和所述窄带光源分别与所述主控模块电连接。本发明利用加工难度较低的同波长光纤反射编码组,并通过在窄带光源增加滤波器辅助精确测量,能够有效降低识别和生产成本。(The invention discloses a same-wavelength coding identification system, a method, a device and a storage medium, wherein the same-wavelength coding identification system comprises a main control module, a narrow-band light source, a filter, a circulator, a same-wavelength optical fiber reflection coding group and a photoelectric detector, the circulator comprises a first end, a second end and a third end, the narrow-band light source, the filter and the first end of the circulator are sequentially connected, the same-wavelength optical fiber reflection coding group is connected with the second end of the circulator through an optical fiber, the input end of the photoelectric detector is connected with the third end of the circulator, and the photoelectric detector and the narrow-band light source are respectively and electrically connected with the main control module. The invention utilizes the same-wavelength optical fiber reflection coding group with lower processing difficulty and adds a filter to a narrow-band light source to assist accurate measurement, thereby effectively reducing the identification and production cost.)

1. A co-wavelength coded identification system, comprising: the optical fiber reflection coding device comprises a main control module, a narrow-band light source, a filter, a circulator, a same-wavelength optical fiber reflection coding group and a photoelectric detector, wherein the circulator comprises a first end, a second end and a third end, the narrow-band light source, the filter and the first end of the circulator are connected in sequence, the same-wavelength optical fiber reflection coding group is connected with the second end of the circulator through optical fibers, the input end of the photoelectric detector is connected with the third end of the circulator, and the photoelectric detector and the narrow-band light source are respectively electrically connected with the main control module.

2. The identification system according to claim 1, wherein the optical fiber reflection encoding set includes at least two optical fiber gratings with the same wavelength, and the distance between two adjacent optical fiber gratings is an integer multiple of the reference pitch.

3. The co-wavelength coded identification system according to claim 1 or 2, wherein the narrowband light source is a pulsed narrowband light source, and the pulse frequency of the pulsed narrowband light source is greater than or equal to 10 GHz.

4. A co-wavelength coded identification system according to claim 3 wherein said filter is a high pass narrow band filter.

5. The co-wavelength coded identification system of claim 4, wherein the detection frequency of said photodetector is equal to the pulse frequency of said pulsed narrowband optical source.

6. The same-wavelength code identification method is characterized by being applied to a same-wavelength code identification system, wherein the same-wavelength code identification system comprises: the optical fiber reflection coding set with the same wavelength is connected with the second end of the circulator through an optical fiber, the input end of the photoelectric detector is connected with the third end of the circulator, and the photoelectric detector and the narrow-band light source are respectively and electrically connected with the main control module;

the same wavelength code identification method comprises the following steps:

the main control module controls the narrow-band light source to output light waves;

the main control module controls the photoelectric detector to detect the reflected light intensity of the filtered light wave emitted back by the same-wavelength optical fiber reflection coding group;

and the main control module obtains the sequence characteristics and the position information of the optical fiber reflection coding group with the same wavelength according to the reflection light intensity and the reflection time of the optical wave.

7. The method according to claim 6, wherein the identical-wavelength fiber-optic reflection code group includes two or more fiber gratings, and the time difference between the reflected lights of the fiber gratings reflected by the light waves outputted from the narrow-band light source is an integer multiple of a unit interval time, and the unit interval time is the time difference between the reflected lights of the two closest fiber gratings.

8. An identification control device comprising: memory, a control processor and a computer program stored on the memory and executable on the control processor, characterized in that the control processor implements the co-wavelength code identification method according to any one of claims 6 to 7 when executing the computer program.

9. Computer-readable storage media, characterized in that it stores computer-executable instructions for causing a computer to perform the co-wavelength coded identification method according to any one of claims 6 to 7.

Technical Field

The invention relates to the field of optical fibers, in particular to a same-wavelength code identification system, method, device and storage medium.

Background

At present, the existing same-wavelength coding identification system can only judge by means of light emission of equipment on two sides, and cannot uniquely identify an optical fiber link.

Disclosure of Invention

In order to solve the above problems, the present invention provides a system, a method, a device and a storage medium for identifying a co-wavelength code, which can realize unique identification, diagnosis and automatic switching of an optical fiber link.

The technical scheme adopted by the invention for solving the problems is as follows:

in a first aspect, an embodiment of the present invention provides a same-wavelength encoding and identifying system, including a main control module, a narrowband light source, a filter, a circulator, a same-wavelength optical fiber reflection encoding group, and a photodetector, where the circulator includes a first end, a second end, and a third end, the narrowband light source, the filter, and the first end of the circulator are sequentially connected, the same-wavelength optical fiber reflection encoding group is connected to the second end of the circulator through an optical fiber, an input end of the photodetector is connected to the third end of the circulator, and the photodetector and the narrowband light source are respectively electrically connected to the main control module.

The technical scheme of the invention at least has one of the following advantages or beneficial effects: the optical spectrum emitted by the narrow-band light source can be narrower by using the filter, so that the light waves emitted by the narrow-band light source to the same-wavelength optical fiber reflection coding group are more accurate, and clutter interference can be effectively avoided. When light waves irradiate the same-wavelength optical fiber reflection coding group, reflected light can be generated and can be transmitted to the input end of the photoelectric detector through the circulator, the photoelectric detector can be controlled to measure the reflection light intensity of the reflected light, and the main control module can obtain the sequence characteristics and the position information of the same-wavelength optical fiber reflection coding group according to the reflection light intensity and the reflection time of the light waves.

Further, the same-wavelength optical fiber reflection encoding group comprises at least two optical fiber gratings with the same wavelength, and the distance between every two adjacent optical fiber gratings is an integral multiple of the reference distance.

Furthermore, the narrow-band light source is a pulse narrow-band light source, the pulse frequency of the pulse narrow-band light source is greater than or equal to 10GHz, and the measurement precision of 10 mm can be achieved.

Further, the filter is a high-pass narrow-band filter.

Further, the detection frequency of the photoelectric detector is equal to the pulse frequency of the pulse narrow-band light source.

In a second aspect, an embodiment of the present invention provides a same-wavelength code identification method, which is applied to a same-wavelength code identification system, where the same-wavelength code identification system includes: the optical fiber reflection coding set with the same wavelength is connected with the second end of the circulator through an optical fiber, the input end of the photoelectric detector is connected with the third end of the circulator, and the photoelectric detector and the narrow-band light source are respectively and electrically connected with the main control module;

the same wavelength code identification method comprises the following steps:

the main control module controls the narrow-band light source to output light waves;

the main control module controls the photoelectric detector to detect the reflected light intensity of the filtered light wave emitted back by the same-wavelength optical fiber reflection coding group;

and the main control module obtains the sequence characteristics and the position information of the optical fiber reflection coding group with the same wavelength according to the reflection light intensity and the reflection time of the optical wave.

The technical scheme of the invention at least has one of the following advantages or beneficial effects: the narrow-band light source can be controlled to output light waves, the light spectrum emitted by the narrow-band light source can be narrower by using the filter, the light waves emitted by the narrow-band light source to the same-wavelength optical fiber reflection coding group are more accurate, and clutter interference can be effectively avoided. When light waves irradiate the same-wavelength optical fiber reflection coding group, reflected light can be generated and can be transmitted to the input end of the photoelectric detector through the circulator, the photoelectric detector can be controlled to measure the reflection light intensity of the reflected light, and the main control module can obtain the sequence characteristics and the position information of the same-wavelength optical fiber reflection coding group according to the reflection light intensity and the reflection time of the light waves.

Furthermore, the same-wavelength optical fiber reflection encoding group comprises more than two optical fiber gratings, the time difference between reflected lights obtained by reflecting light waves output by the narrow-band light source by the optical fiber gratings is integral multiple of unit interval time, and the unit interval time is the time difference between the reflected lights of two optical fiber gratings which are closest to each other.

In a third aspect, an embodiment of the present invention provides an identification control apparatus, including: a memory, a control processor and a computer program stored on the memory and executable on the control processor, the control processor implementing the co-wavelength code identification method according to the second aspect when executing the computer program.

The technical scheme of the invention at least has one of the following advantages or beneficial effects: the identification control device can control the narrow-band light source to output light waves, the filter can be used for narrowing the light spectrum emitted by the narrow-band light source, the light waves emitted by the narrow-band light source to the same-wavelength optical fiber reflection coding group are more accurate, and clutter interference can be effectively avoided. When light waves irradiate the same-wavelength optical fiber reflection coding group, reflected light can be generated and can be transmitted to the input end of the photoelectric detector through the circulator, the photoelectric detector can be controlled to measure the reflection light intensity of the reflected light, and the main control module can obtain the sequence characteristics and the position information of the same-wavelength optical fiber reflection coding group according to the reflection light intensity and the reflection time of the light waves.

In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the co-wavelength coded identification method according to the second aspect.

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 invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of a co-wavelength coded identification system according to one embodiment of the invention;

FIG. 2 is a schematic diagram of a co-wavelength fiber reflection encoding set of a co-wavelength encoded identification system according to an embodiment of the present invention;

FIG. 3 is a flow chart of a co-wavelength coded identification method of one embodiment of the present invention;

fig. 4 is a schematic diagram of an identification control device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that although functional block divisions are provided in the system drawings and logical orders are shown in the flowcharts, in some cases, the steps shown and described may be performed in different orders than the block divisions in the systems or in the flowcharts. The terms first, second and the like in the description and in the claims, and the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

With wavelength code identification system, including host system, narrowband light source, wave filter, circulator, with wavelength optical fiber reflection coding group and photoelectric detector, the circulator includes first end, second end and third end, narrowband light source the wave filter with the first end of circulator connects gradually, with wavelength optical fiber reflection coding group pass through optic fibre with the second end of circulator is connected, photoelectric detector's input with the third end of circulator is connected, photoelectric detector with narrowband light source respectively with the host system electricity is connected. The invention utilizes the same-wavelength optical fiber reflection coding group with lower processing difficulty and adds a filter to a narrow-band light source to assist accurate measurement, thereby effectively reducing the identification and production cost.

The embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1, an embodiment of the present invention provides a narrow-spectrum optical wave filtering and same-wavelength encoding identification system, including: the optical fiber reflection coding device comprises a main control module 110, a narrow-band light source 120, a filter 130, a circulator 140, a same-wavelength optical fiber reflection coding group 150 and a photoelectric detector 160, wherein the circulator 140 comprises a first end, a second end and a third end, the narrow-band light source 120, the filter 130 and the first end of the circulator 140 are sequentially connected, the same-wavelength optical fiber reflection coding group 150 is connected with the second end of the circulator 140 through an optical fiber, the input end of the photoelectric detector 160 is connected with the third end of the circulator 140, and the photoelectric detector 160 and the narrow-band light source 120 are respectively electrically connected with the main control module 110.

In an embodiment, the filter 130 may be used to make the spectrum of the light emitted from the narrowband light source 120 narrower, so that the light wave emitted from the narrowband light source 120 to the same-wavelength optical fiber reflective coding group 150 is more accurate, and clutter interference can be effectively avoided. When light waves irradiate to the same-wavelength optical fiber reflection coding group 150, reflected light can be generated, and the reflected light can be transmitted to the input end of the photoelectric detector 160 through the circulator 140, at the moment, the photoelectric detector 160 can accurately obtain the sequence characteristics and the position information of the same-wavelength optical fiber reflection coding group 150.

It should be noted that the first end, the second end and the third end of the circulator 130 in this embodiment are arranged in sequence and the unidirectional passing directions of the three ports are the same; since the overall structure involves multiple optical components, the loss in the fiber should be minimized to ensure the accuracy of the measurement.

In one embodiment, the narrow-band light source is a pulsed narrow-band light source, and the pulse frequency of the pulsed narrow-band light source is greater than or equal to 10GHz, so that the measurement accuracy of 10 mm can be achieved.

The pulse frequency of the pulsed narrowband light source is not limited, and may be set according to actual needs.

In one embodiment, the photo detector 160 is a photo detector, the detection frequency of the photo detector is equal to the pulse frequency of the pulsed narrowband light source, and the detection frequency of the photo detector is equal to the pulse frequency of the pulsed narrowband light source, so as to detect the light intensity, and the detection sensitivity of the photo detector can reach 10 mm intervals by adopting at least 10G frequency.

The detection frequency of the photodetector 160 is not limited, and may be set according to the pulse frequency of the pulsed narrowband light source.

In one embodiment, the filter 130 is a high-pass narrow-band filter 130, and the narrow-band light source 120 can emit a narrower light spectrum through the high-pass narrow-band filter 130, so as to avoid clutter interference.

Referring to fig. 2, the same-wavelength optical fiber reflective coding group 150 includes at least two optical fiber gratings 210 with the same wavelength, a distance between two adjacent gratings is an integer multiple of a reference pitch L, and the reference pitch L is a shortest distance between two adjacent gratings. Since the same-wavelength fiber-optic reflective coding group 150 includes a plurality of same-wavelength fiber gratings 210, if the distance between two same-wavelength fiber gratings 210 is too close, energy loss may occur, and therefore, the arrangement of the gratings needs to be greater than or equal to the reference pitch L.

It should be noted that the grating interval of each two adjacent fiber gratings 210 may not be an integral multiple of the reference pitch, or may be a different distance value greater than or equal to the reference pitch, and the present invention is not limited thereto.

In one embodiment, several fiber gratings 210 with the same wavelength may be combined at a certain pitch, the reference pitch L may be set to be 2mm, and the pitches of the other fiber gratings 210 connected thereto may be set to be N × 2mm and M × 2mm, so that the fiber reflection code group 150 with the same wavelength is [ 1, N, M ]. The setting of the reference pitch L is not limited to the only setting in practical use.

In one embodiment, the narrowband light source 120 is a pulsed narrowband light source 120, the pulse frequency of the pulsed narrowband light source 120 is greater than or equal to 10GHz, the photodetector 160 is a photodetector 160, the detection frequency of the photodetector 160 is equal to the pulse frequency of the pulsed narrowband light source 120, and the pulsed narrowband light source 120 can achieve a measurement accuracy of 10 mm by calculating the formula Lu ═ Tu (c/(n × 2)), where Lu is the measurement accuracy, Tu is the detection frequency, c is the speed of light, and n is the refractive index.

In one embodiment, since the same-wavelength optical fiber reflective coding set 150 generates a wavelength error during the processing, the spectral bandwidth of the filter 130 can be calculated by the following formula: f0/3, where f is the spectral bandwidth of the filter 130 and f0 wavelength error.

Referring to fig. 3, the method for identifying a co-wavelength code applied to the co-wavelength code identification system in the above embodiment of the present invention includes the following steps:

s310, the main control module controls the narrow-band light source to output light waves;

s320, the main control module controls the photoelectric detector to detect the reflected light intensity of the filtered light wave emitted back by the same-wavelength optical fiber reflection coding group;

and S330, the main control module obtains sequence characteristics and position information of the optical fiber reflection coding group with the same wavelength according to the reflection light intensity and the reflection time of the optical wave.

In an embodiment, the narrow-band light source can be controlled to output light waves, and the filter can be used for making the light spectrum emitted by the narrow-band light source narrower, so that the light waves emitted by the narrow-band light source to the same-wavelength optical fiber reflection coding group are more accurate, and clutter interference can be effectively avoided. When light waves irradiate to the optical fiber reflection coding group with the same wavelength, reflected light can be generated and can be transmitted to the input end of the photoelectric detector through the circulator, the photoelectric detector can be controlled to measure the reflection light intensity of the reflected light, the main control module can obtain the sequence characteristics and the position information of the optical fiber reflection coding group with the same wavelength according to the reflection light intensity and the reflection time of the light waves, the optical fiber reflection coding group with the same wavelength and low processing difficulty is utilized, and a filter is added in a narrow-band light source to assist in accurate measurement, so that the identification and production cost can be effectively reduced.

In an embodiment, the main control module may obtain data collected by the photodetector to generate a graph, where the graph uses time as an abscissa and data energy collected by the photodetector as an ordinate, perform fitting peak searching on the graph, uses a distance between peaks as an array, deletes peaks whose distance exceeds a threshold, and combines peaks satisfying the number and the distance to obtain the code, the distance, and the reflection energy of the same-wavelength optical fiber code array. Because certain measurement errors exist during distance ranging, the error range of the distance ranging is within the detection precision range of the photoelectric detector, and the optical fiber coding distance can be set by adopting 2 times. The same-wavelength optical fiber reflection coding group with low processing difficulty is utilized, and a filter is added in a narrow-band light source to assist in accurate measurement, so that the identification and production cost can be effectively reduced.

As can be seen from the structure of the same-wavelength fiber reflection encoding group in the above embodiment of the same-wavelength encoding and recognizing system, the same-wavelength fiber reflection encoding group includes two or more fiber gratings, the time difference between the reflected lights obtained by reflecting the light wave output by the narrow-band light source by the fiber gratings is an integral multiple of the unit interval time, and the unit interval time is the time difference between the reflected lights of two nearest fiber gratings. The regular fiber grating arrangement structure can facilitate the calculation of the distance and the code element composition.

Referring to fig. 4, fig. 4 is a schematic diagram of an identification control apparatus 400 according to an embodiment of the present invention. The recognition control device 400 according to the embodiment of the present invention is built in the recognition system, and includes one or more control processors 410 and a memory 420, and fig. 4 illustrates one control processor 410 and one memory 420 as an example.

The control processor 410 and the memory 420 may be connected by a bus or other means, such as by a bus in fig. 4.

The memory 420, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, memory 420 may include random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 420 may optionally include memory 420 located remotely from the control processor 410, and these remote memories 420 may be connected to the identification control device 400 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Those skilled in the art will appreciate that the configuration of the apparatus shown in FIG. 4 does not constitute a limitation of the identification control apparatus 400, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.

The non-transitory software program and instructions required to implement the co-wavelength code identification method applied to the identification control device 400 in the above-described embodiment are stored in the memory 420, and when executed by the control processor 410, perform the co-wavelength code identification method applied to the identification control device 400 in the above-described embodiment, for example, perform the above-described method steps S310 to S330 in fig. 3.

The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, which stores computer-executable instructions, which are executed by one or more control processors, for example, by one of the control processors 410 in fig. 4, and can cause the one or more control processors 410 to execute the co-wavelength code identification method in the above-described method embodiment, for example, execute the above-described method steps S310 to S330 in fig. 3.

One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.