CN115371972B

CN115371972B - Light path function detection method, device, equipment and storage medium

Info

Publication number: CN115371972B
Application number: CN202211309048.1A
Authority: CN
Inventors: 陈雄颖; 蔡俊; 罗丁元; 李卫卫; 魏伯凡; 梁钢兴; 方晓莉; 郑林贤; 唐根
Original assignee: Qualsen International Technologies Co Ltd
Current assignee: Qualsen International Technologies Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2022-12-23
Anticipated expiration: 2042-10-25
Also published as: CN115371972A

Abstract

The application relates to the field of optical cable detection, and discloses a method, a device, equipment and a storage medium for detecting optical path functions. The method comprises the following steps: acquiring a target detection optical fiber; displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment; respectively calling each optical fiber detection device to detect the target detection optical fiber section; calling upper computer equipment to receive and display a waveform detection result of each optical fiber detection equipment on a target detection optical fiber section at the position of a tail fiber melting point on each optical cable detection optical path; and determining the optical path function state of the optical cable detection device according to the received and displayed waveform detection result. The invention respectively executes various optical path function tests on the optical fiber and acquires the detection waveform result at the tail fiber melting point position on each detection optical path to determine whether each optical path function is abnormal, thereby being convenient for determining the abnormal optical path function.

Description

Light path function detection method, device, equipment and storage medium

Technical Field

The present disclosure relates to the field of optical cable detection, and in particular, to a method, an apparatus, a device, and a storage medium for detecting optical path functions.

Background

In an optical transmission system, the performance of a transmission cable directly affects the reliability of the communication system, and the transmission cable is prone to various failure problems, so that the performance of the transmission cable needs to be tested before the transmission cable is used. The performance test of the transmission optical cable depends on an optical cable detection device, the optical cable detection device generally consists of a plurality of optical cable detection optical paths which are connected in parallel, each optical cable detection optical path is connected with a plurality of optical detection elements in series through fusion fibers to perform optical path function detection, and different optical paths are coupled through optical switch control to perform different optical path function detection. Because the number of the fiber melting points on each optical path is large, if any fiber melting point occurs, the corresponding detection optical path is abnormal, so that the performance test result of the optical cable detection device on the transmission optical cable is influenced, and therefore, the optical path function detection of the optical cable detection device is necessary in advance.

In the conventional technology, the optical path function detection of the optical cable detection device usually uses the whole device as a clamp, displays the whole optical path waveform through a connection detection upper computer, can detect whether a fault exists, but cannot detect whether the functional state of each optical path function in the optical cable detection device is normal.

Disclosure of Invention

The embodiment of the application provides a method for detecting optical path functions, which respectively executes various optical path function tests on a selected optical fiber detection road section and acquires detection waveform results at tail fiber melting points on various detection optical paths to determine whether functions of various optical paths are abnormal. Furthermore, the problem that whether the function state of each optical path function in the optical cable detection device is normal or not cannot be detected by the conventional method is solved.

In a first aspect, an embodiment of the present application provides an optical path function detecting method, which is applied to an optical cable detecting device, where the optical cable detecting device includes at least one optical cable detecting optical path, each optical cable detecting optical path is provided with a plurality of optical detecting elements connected in series in sequence, two adjacent optical detecting elements are connected by a fiber melting point, and the optical detecting element on each optical cable detecting optical path at least includes an optical fiber detecting device, and the optical path function detecting method includes: acquiring a target detection optical fiber to be detected; displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber; respectively calling each optical fiber detection device to detect a target detection optical fiber section, wherein each optical fiber detection device corresponds to one optical path function of the detection optical cable detection device; calling upper computer equipment to receive and display a waveform detection result of each optical fiber detection equipment on a target detection optical fiber section at the position of a tail fiber melting point on each optical cable detection optical path; and determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer equipment at the position of the tail fiber melting point on each optical cable detection optical path.

Based on the method provided by the embodiment of the application, various optical path function tests are respectively executed on the selected optical fiber detection road section, and the detection waveform result is obtained at the tail fiber melting point position on each detection optical path, so that whether each optical path function of the optical cable detection device is abnormal or not can be determined according to each waveform detection result.

In a possible implementation manner, the optical cable detection apparatus further includes an optical switch, the optical cable detection apparatus includes two optical cable detection optical paths, optical fiber detection devices on the two optical cable detection optical paths are respectively an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, and respectively invoking each optical fiber detection device to detect the target detection optical fiber segment includes: calling an Optical Time Domain Reflectometer (OTDR) to emit first detection light, and switching an optical switch to a first connection point to input the first detection light to a target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light; calling an OTDR (optical time domain reflectometer) to receive the first reflected light, and performing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light; drawing a first waveform detection result according to the electric signal corresponding to the first reflected light; calling a phase-sensitive optical time domain reflectometer phi-OTDR (optical time domain reflectometer) to transmit second detection light, and switching an optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflected light; calling a phase-sensitive optical time domain reflectometer phi-OTDR (optical time domain reflectometer) to receive second reflected light, and performing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light; and drawing a second waveform detection result according to the electric signal corresponding to the second reflected light.

In a possible implementation manner, the determining the optical path function state of the optical cable detection apparatus according to the waveform detection result received and displayed by the upper computer device at the position of the last fiber melting point on each optical cable detection optical path includes: if the waveform detection result of the target detection optical fiber section under the phase sensitive optical time domain reflectometer phi-OTDR in the waveform detection result is a waveform, applying a vibration signal to the target detection optical fiber section; detecting whether the waveform vibrates after applying a vibration signal, and if the waveform does not vibrate, determining that the phi-OTDR optical path function of the optical cable detection device is abnormal; and if the waveform detection result of the target detection optical fiber section under the phase-sensitive optical time domain reflectometer phi-OTDR is non-waveform, determining that the phi-OTDR optical path function of the optical cable detection device is abnormal.

In this way, the optical time domain reflectometer OTDR and the phase-sensitive optical time domain reflectometer phi-OTDR respectively emit two functional optical paths of the optical fiber after the corresponding detection light detects the molten fiber, an optical signal returned by the detection light is converted through a photoelectric effect to obtain an electric signal, and a waveform diagram result corresponding to the electric signal is visualized based on an upper computer, so that the functional characteristics of the optical cable detection device are accurately judged according to the waveform diagram result.

In a possible implementation manner, after determining the optical path function state of the optical cable detection apparatus according to a waveform detection result received and displayed by the upper computer device at a position where the last fiber melting point on each optical cable detection optical path is located, the method further includes: if the optical cable detection device is determined to have an abnormal detection optical path with abnormal function, the detection point position of the abnormal detection optical path is moved forwards in sequence from the tail fiber melting point, and the optical path function state of the abnormal detection optical path is detected after each forward movement, so that the position of the abnormal fiber melting point of the abnormal detection optical path is determined.

In this way, if no waveform is detected at the end fusible fiber point position, the detection point position is sequentially moved forward and detected, and the abnormal fusible fiber point position is accurately positioned to be repaired.

In a possible implementation manner, determining the optical path function state of the optical cable detection apparatus according to a waveform detection result received and displayed by the upper computer device at a position where the last fiber melting point on each optical cable detection optical path is located includes: acquiring a oscillogram of a target detection optical fiber section under each optical fiber detection device in the waveform detection result, wherein the oscillogram is an image of the waveform detection result; performing feature extraction on each oscillogram to obtain a corresponding oscillogram feature of each oscillogram; based on the data statistical characteristics, performing classification calculation on the waveform image characteristics corresponding to each oscillogram to obtain the waveform classification corresponding to each oscillogram; and determining the optical path function state of the optical cable detection device according to the correspondence between the waveform classification and the optical path function state counted in advance and the waveform classification corresponding to each oscillogram.

Therefore, the waveform representation detection light return signal in the oscillogram corresponds to the electric analog signal, the waveform image characteristics under different optical path function states are determined in advance based on data statistics, image classification is carried out on the oscillogram displayed in the upper computer to realize waveform identification, the optical path function state is directly determined, a user does not need to read and identify the waveform, and the overall efficiency and accuracy of optical path function detection are improved.

In a possible implementation manner, after determining the optical path functional state of the optical cable detection apparatus according to the correspondence between the waveform classification and the optical path functional state counted in advance and the waveform classification corresponding to each waveform diagram, the method further includes: based on data statistical characteristics, performing regression calculation on waveform image characteristics corresponding to each waveform map to obtain a coordinate position of an abnormal attenuation point in each waveform map, wherein the waveform maps are used for indicating that the attenuation value of detection light in the propagation process of the optical fiber changes along with the change of the length value of the optical fiber, the coordinate position comprises an abscissa and an ordinate, the abscissa represents the length value of the optical fiber, and the ordinate represents the attenuation value of the detection light; and determining the abnormal loss position of the target detection optical fiber section according to the abscissa position of the abnormal attenuation point.

Therefore, based on the target detection and data statistical characteristics, the abnormal attenuation point in the analog signal is directly positioned, and the specific abnormal position in the optical fiber detection section is determined according to the optical fiber length value corresponding to the abnormal attenuation point, so that the abnormal position in the target optical fiber detection section is positioned while the optical cable detection device is detecting.

In a possible implementation manner, before invoking each optical fiber detection device to detect the target detection optical fiber segment, the method further includes: receiving equipment test parameters input by a user in the upper computer equipment; and configuring equipment parameters for each optical fiber detection equipment according to the equipment test parameters, wherein the equipment test parameters at least comprise pulse width and measurement distance of the detection light.

Therefore, the detection light parameters can be flexibly adjusted according to requirements, and then the detection laser pulses of corresponding types are transmitted to the optical fiber section to be detected based on the detection light parameters so as to detect the optical fiber section to be detected, so that the flexibility of optical path function detection is improved.

In a second aspect, an embodiment of the present application provides an optical path function detecting device, which is applied to an optical cable detecting device, where the optical cable detecting device includes at least one optical cable detecting optical path, each optical cable detecting optical path is provided with a plurality of optical detecting elements connected in series in sequence, two adjacent optical detecting elements are connected through a fiber melting point, the optical detecting element on each optical cable detecting optical path at least includes an optical fiber detecting device, and the optical path function detecting device includes: the detection optical fiber acquisition module is used for acquiring a target detection optical fiber to be detected; the detection section selection module is used for displaying the target detection optical fiber based on preset upper computer equipment and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber; the laser pulse detection module is used for respectively calling each optical fiber detection device to detect a target detection optical fiber section, wherein each optical fiber detection device corresponds to one optical path function of the detection optical cable detection device; the detection signal display module is used for calling the upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path; and the detection result judging module is used for determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer equipment at the position of the tail fiber melting point on each optical cable detection optical path.

In a possible implementation manner, the optical path function detection apparatus further includes: the device parameter receiving module is used for receiving device testing parameters input by a user in the upper computer device; and the equipment parameter configuration module is used for configuring equipment parameters for each optical fiber detection equipment according to the equipment test parameters, wherein the equipment test parameters at least comprise the pulse width and the measurement distance of the detection light.

In a possible implementation manner, the waveform detection result includes a waveform and no waveform, and the optical cable detection apparatus further includes: and the abnormity positioning module is used for sequentially moving forward the detection point position of the abnormity detection optical path from the tail fiber melting point if the abnormity detection optical path with abnormal functions of the optical cable detection device is determined, and detecting the optical path function state of the abnormity detection optical path after each forward movement so as to determine the position of the abnormal fiber melting point of the abnormity detection optical path.

In a possible implementation manner, the optical cable detection apparatus further includes an optical switch, the optical cable detection apparatus includes two optical cable detection optical paths, optical fiber detection devices on the two optical cable detection optical paths are respectively an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, and the laser pulse detection module specifically includes: the first detection light input unit is used for calling an Optical Time Domain Reflectometer (OTDR) to emit first detection light, and switching the optical switch to a first connecting point to input the first detection light to the target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light; the first reflected light analysis unit is used for calling an OTDR (optical time domain reflectometer) to receive the first reflected light and executing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light; a first waveform drawing unit for drawing a first waveform detection result based on the electric signal corresponding to the first reflected light; the second detection light input unit is used for calling the phase-sensitive optical time domain reflectometer phi-OTDR to emit second detection light, and switching the optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflected light; the second reflected light analysis unit is used for calling the phase-sensitive optical time domain reflectometer phi-OTDR to receive second reflected light and executing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light; and the second waveform drawing unit is used for drawing a second waveform detection result according to the electric signal corresponding to the second reflected light.

In a possible implementation manner, the waveform detection result includes a waveform and no waveform, and the detection result determining module specifically includes: the vibration signal application unit is used for applying a vibration signal to the target detection optical fiber section if the waveform detection result of the target detection optical fiber section under the phase-sensitive optical time domain reflectometer phi-OTDR in the waveform detection result is a waveform; the first judging unit is used for detecting whether the waveform vibrates after the vibration signal is applied, and if the waveform does not vibrate, determining that the phi-OTDR optical path function of the optical cable detection device is abnormal; and the second judgment unit is used for determining that the phi-OTDR optical path function of the optical cable detection device is abnormal if the waveform detection result of the target detection optical fiber section under the phase sensitive optical time domain reflectometer phi-OTDR is non-waveform.

In a possible implementation manner, the detection result determining module specifically includes: the waveform image acquisition unit is used for acquiring a waveform image of the target detection optical fiber section under each optical fiber detection device in the waveform detection result, wherein the waveform image is an image of the waveform detection result; the characteristic extraction unit is used for performing characteristic extraction on each oscillogram to obtain the characteristic of the oscillogram corresponding to each oscillogram; the classification calculation unit is used for performing classification calculation on the waveform image characteristics corresponding to each oscillogram based on the data statistical characteristics to obtain the waveform classification corresponding to each oscillogram; and the state determining unit is used for determining the optical path function state of the optical cable detection device according to the correspondence between the waveform classification and the optical path function state counted in advance and the waveform classification corresponding to each oscillogram.

In a possible implementation manner, the detection result determining module specifically includes: the waveform image acquisition unit is used for acquiring a waveform image of the target detection optical fiber section under each optical fiber detection device in the waveform detection result, wherein the waveform image is an image of the waveform detection result; the characteristic extraction unit is used for performing characteristic extraction on each oscillogram to obtain the corresponding waveform image characteristic of each oscillogram; the classification calculation unit is used for performing classification calculation on the waveform image characteristics corresponding to each oscillogram based on the data statistical characteristics to obtain the waveform classification corresponding to each oscillogram; the state determining unit is used for determining the optical path function state of the optical cable detection device according to the correspondence between the pre-counted waveform classification and the optical path function state and the waveform classification corresponding to each oscillogram; the regression calculation unit is used for performing regression calculation on waveform image features corresponding to each waveform map based on data statistical characteristics to obtain a coordinate position of an abnormal attenuation point in each waveform map, wherein the waveform maps are used for indicating that the attenuation value of detection light in the propagation process of the optical fiber changes along with the change of the length value of the optical fiber, the coordinate position comprises an abscissa and an ordinate, the abscissa represents the length value of the optical fiber, and the ordinate represents the attenuation value of the detection light; and the abnormal position determining unit is used for determining the abnormal loss position of the target detection optical fiber section according to the abscissa position of the abnormal attenuation point.

The technical effects of the second aspect and its various possible implementations are similar to those of the first aspect and its various possible implementations, and are not described here again.

In a third aspect, an embodiment of the present application provides an optical path function detection apparatus, including: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the optical path function detection apparatus to perform the steps of the optical path function detection method described above.

In a fourth aspect, the present application provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the steps of the above-mentioned optical path function detection method.

Drawings

Fig. 1 is a flowchart of an embodiment of a method for detecting a function of an optical path provided in an embodiment of the present application;

fig. 2 is a flowchart of an embodiment of a second method for detecting a function of an optical path provided in an embodiment of the present application;

fig. 3 is a flowchart of an embodiment of a third method for detecting a function of an optical path provided in an embodiment of the present application;

fig. 4 is a flowchart of an embodiment of a fourth method for detecting a function of an optical path provided in an embodiment of the present application;

fig. 5 is a flowchart of an embodiment of a fifth method for detecting a function of an optical path provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of an optical path function detecting device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another optical path function detection apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an optical path function detection apparatus according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a method for detecting optical path functions, which respectively executes various optical path function tests on a selected optical fiber detection road section and acquires detection waveform results at tail fiber melting points on various detection optical paths to determine whether functions of various optical paths are abnormal. Furthermore, the problem that the function state of each optical path function in the optical cable detection device cannot be detected to be normal by the existing method is solved.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Where the terms "first," "second," "third," "fourth," and the like (if any) in the description and claims of this application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It can be understood that the executing body of the present application may be a light path function detecting device, and may also be a terminal, a server, or a controller, which is not limited herein.

For convenience of understanding, in the embodiment of the present application, a server is taken as an execution main body to describe the optical path function detection method, and a specific flow of the embodiment of the present application is described below, referring to fig. 1, the embodiment of the present application provides an optical path function detection method, which is applied to an optical cable detection apparatus, where the optical cable detection apparatus includes at least one optical cable detection optical path, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point, and an optical detection element on each optical cable detection optical path at least includes an optical fiber detection apparatus, including:

101. acquiring a target detection optical fiber to be detected;

it can be understood that, the optical cable detection device includes at least one optical cable detection optical path, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point (i.e. optical fiber fusion), and optical fiber fusion means that two optical fibers are fused end to end into a whole by an optical fiber fusion splicer. In a specific implementation, the fusion-spliced ends of two optical fibers need to be aligned before fusion splicing, so that fusion splicing is performed after alignment. In the embodiment of the present application, the alignment method of the optical fibers before fusion splicing and the specific method of fusion splicing are not particularly limited.

For example, the server may perform image processing on the side surface image of the optical fiber based on a side-to-side imaging axis method, and find a characteristic value related to the position or the azimuth of the optical fiber, thereby calculating the position or the azimuth information of the optical fiber, and then invoking the controller to control the translation and the rotation of the optical fiber, thereby aligning the welding ends of the two optical fibers;

for example, the server may weld two optical fibers based on a preheating welding mode, perform dust removal treatment on the end faces of the optical fibers through cleaning discharge, perform preheating shaping on the end faces of the optical fibers through the pre-discharge, and control one of the optical fibers to move axially to complete welding of the two optical fibers in a main discharge environment, where a welding position between the two optical fibers is an optical fiber welding point.

102. Displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

it can be understood that the upper computer device is connected to the target detection optical fiber, and displays a visual interface of the target detection optical fiber through upper computer software, so that a user can select a target detection optical fiber section that needs to be detected in the target detection optical fiber, and the user interacts with a graphical interface in the upper computer device to select the target detection optical fiber section that needs to be detected, for example, touch screen selection, mouse control selection, and the like.

103. Respectively calling each optical fiber detection device to detect a target detection optical fiber section, wherein each optical fiber detection device corresponds to one optical path function of the detection optical cable detection device;

the optical fiber detection device is based on an optical signal detection technology to detect the functional characteristics of an optical fiber and generally comprises a light source emitting unit, a reflected light receiving unit and a signal detection unit, wherein laser is emitted to a target detection optical fiber section to be detected through the light source emitting unit, then the laser is continuously reflected and attenuated in the target detection optical fiber section, the reflected light receiving unit detects the reflected light, and the signal detection unit detects the signal of the reflected light and carries out photoelectric conversion to obtain a detection signal curve. Attenuation is the reduction in optical power of light during transmission, with losses proportional to the length of the fiber.

In the embodiment of the present application, the Optical fiber detection device includes, but is not limited to, an Optical Time-Domain Reflectometer (OTDR), a Phase Sensitive Optical Time Domain Reflectometer (phi-OTDR), a distributed temperature sensor (ROTDR), and the like, and the embodiment of the present application does not specifically limit the Optical Time-Domain Reflectometer.

In a possible design, before each optical fiber detection device detection target detection optical fiber section is called respectively, the server further receives device test parameters input by a user in the host computer device, so that the device parameters are configured for each optical fiber detection device according to the device test parameters, and detection light is generated, wherein the device test parameters at least comprise the pulse width and the measurement distance of the detection light, and optionally further comprise the refractive index, the wavelength of the detection light and the like. Because the refractive index of the manufactured optical fiber is basically unchanged, the propagation speed of light in the optical fiber is unchanged, and the test distance is the propagation speed of the light in the optical fiber multiplied by the propagation time, the selection of the test distance is the selection of the start time and the end time of test sampling, and a relatively comprehensive wave form diagram can be generated by selecting a proper test distance; the refractive index is the actual refractive index of the fiber to be measured, for example, the refractive index of a single mode silica fiber is between about 1.4 and 1.6. The wavelength of the detection light is the wavelength of the laser light emitted by the optical time domain reflectometer laser, and for example, 1310nm or 1550nm can be used.

104. Calling upper computer equipment to receive and display a waveform detection result of each optical fiber detection equipment on a target detection optical fiber section at the position of a tail fiber melting point on each optical cable detection optical path;

it can be understood that the upper computer device is further configured to output and display a signal, and is connected to the upper computer device through an APC interface preset at a position of a last fiber melting point (i.e., a last fiber melting point, an arrangement direction of the fiber melting points is the same as a light transmission direction of the optical fiber detection device) on each optical cable detection optical path, so as to receive and display a waveform detection result on each optical cable detection optical path.

105. And determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer equipment at the position of the tail fiber melting point on each optical cable detection optical path.

It can be understood that each optical fiber detection device detects an optical path functional characteristic of the optical cable detection device according to a waveform detection result output correspondingly, in a general case, a waveform of the waveform detection result indicates that a corresponding optical path function is normal, and no waveform indicates that a corresponding optical path function is abnormal, for example, a waveform detection result of an optical time domain reflectometer OTDR on a target detection optical fiber section is no waveform output, which indicates that an OTDR optical path function of the optical cable detection device is abnormal, and conversely, a waveform output indicates that an OTDR optical path function of the optical cable detection device is normal. In specific implementation, the server can also perform waveform signal detection on the waveform detection result with the waveform, so as to further locate the abnormality.

In one possible design, the waveform detection result comprises a waveform and a non-waveform, and if the waveform detection result of the target detection optical fiber section under the phase sensitive optical time domain reflectometer phi-OTDR in the waveform detection result is a waveform, a vibration signal is applied to the target detection optical fiber section; detecting whether the waveform vibrates after applying a vibration signal, and if the waveform does not vibrate, determining that the phi-OTDR optical path function of the optical cable detection device is abnormal; and if the waveform detection result of the target detection optical fiber section under the phase-sensitive optical time domain reflectometer phi-OTDR is non-waveform, determining that the phi-OTDR optical path function of the optical cable detection device is abnormal.

In a possible design, after determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer device at the position of the last fiber melting point on each optical cable detection optical path, the method further comprises the following steps: if the optical cable detection device is determined to have an abnormal detection optical path with abnormal function, the detection point position of the abnormal detection optical path is moved forwards in sequence from the tail fiber melting point, and the optical path function state of the abnormal detection optical path is detected after each forward movement, so that the position of the abnormal fiber melting point of the abnormal detection optical path is determined.

Based on the method provided by the embodiment of the application, various optical path function tests are respectively executed on the selected optical fiber detection road section, and the detection waveform result is obtained at the tail fusion fiber point position on each detection optical path, so that whether each optical path function of the optical cable detection device is abnormal can be determined according to each waveform detection result.

Referring to fig. 2, an embodiment of the present application provides a second optical path function detection method, which is applied to an optical cable detection device, where the optical cable detection device includes two optical cable detection optical paths, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point, optical fiber detection devices on the two optical cable detection optical paths are an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, respectively, and the optical cable detection device further includes an optical switch, and the optical path function detection method includes:

201. acquiring a target detection optical fiber to be detected;

202. displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

the steps 201 to 202 are similar to the steps 101 to 102, and are not described herein again.

203. Calling an Optical Time Domain Reflectometer (OTDR) to emit first detection light, and switching an optical switch to a first connection point to input the first detection light to a target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light;

it can be understood that the optical switch is used for controlling and switching the detection light emitted by different optical fiber detection devices to be driven into the target detection optical fiber section, so that the target detection optical fiber section can be independently detected by each optical fiber detection device.

204. Calling an optical time domain reflectometer OTDR (optical time Domain reflectometer) to receive the first reflected light, and performing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light;

the optical time domain reflectometer OTDR is mainly based on rayleigh scattering, generated by elastic collision of its incident photons with the media molecules. For detection light of the optical time domain reflectometer OTDR, the detection light has the same wavelength as the scattered light (reflected light), and the optical power of the scattered light is inversely proportional to the fourth power of the wavelength of the input detection light. The OTDR is configured to inject a laser pulse into a target detection optical fiber segment, and determine a spatial position according to a time difference between a reflected signal and an incident pulse, that is, Z = C × T/2, where Z is a spatial distance, C is an optical speed, and T is an optical transmission time.

205. Drawing a first waveform detection result according to the electric signal corresponding to the first reflected light;

206. calling a phase-sensitive optical time domain reflectometer (phi-OTDR) to emit second detection light, and switching an optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflected light;

207. calling a phase-sensitive optical time domain reflectometer phi-OTDR (optical time domain reflectometer) to receive second reflected light, and performing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light;

208. drawing a second waveform detection result according to the electric signal corresponding to the second reflected light;

different from a broadband light source emitted by an Optical Time Domain Reflectometer (OTDR), the phase-sensitive OTDR (optical time domain reflectometer) uses an ultra-narrow line width laser as a light source emitting device, emits continuous light which is modulated into pulse light through an optical pulse modulator, is amplified through an erbium-doped optical fiber amplifier and then is injected into the target detection optical fiber section, generates backward scattering light after scattering in the optical fiber section, is received by a detector and subjected to photoelectric conversion, is collected by a data acquisition card and then is transmitted to an upper computer device, and the detection curves at adjacent moments are subjected to subtraction operation to obtain disturbance position information.

209. Calling upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path;

210. and determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer equipment at the position of the tail fiber melting point on each optical cable detection optical path.

Steps 209-210 are similar to the steps 104-105 described above, and are not described here again.

Based on the method provided by the embodiment of the application, the optical time domain reflectometer OTDR and the phase-sensitive optical time domain reflectometer phi-OTDR respectively emit two functional light paths of the optical fiber after the corresponding detection light detects the fused fiber, the optical signal returned by the detection light is converted through a photoelectric effect to obtain an electric signal, and the waveform diagram corresponding to the electric signal is visualized based on the upper computer, so that the functional characteristics of the optical cable detection device are accurately judged according to the waveform diagram.

Referring to fig. 3, an embodiment of the present application provides a third optical path function detecting method, which is applied to an optical cable detecting device, where the optical cable detecting device includes at least one optical cable detecting optical path, each optical cable detecting optical path is provided with a plurality of optical detecting elements connected in series in sequence, two adjacent optical detecting elements are connected by a fiber melting point, and the optical detecting element on each optical cable detecting optical path includes at least one optical fiber detecting device, where the optical path function detecting method includes:

301. acquiring a target detection optical fiber to be detected;

302. displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

303. respectively calling each optical fiber detection device to detect a target detection optical fiber section, wherein each optical fiber detection device corresponds to one optical path function of the detection optical cable detection device;

304. calling upper computer equipment to receive and display a waveform detection result of each optical fiber detection equipment on a target detection optical fiber section at the position of a tail fiber melting point on each optical cable detection optical path;

the steps 301 to 304 are similar to the steps 101 to 104, and are not described herein again.

305. Acquiring a oscillogram of a target detection optical fiber section under each optical fiber detection device in the waveform detection result, wherein the oscillogram is an image of the waveform detection result;

306. performing feature extraction on each oscillogram to obtain a corresponding oscillogram feature of each oscillogram;

307. based on the data statistical characteristics, performing classification calculation on the waveform image characteristics corresponding to each oscillogram to obtain the waveform classification corresponding to each oscillogram;

in specific implementation, waveform images of each optical fiber detection device in a normal optical path functional state or an abnormal optical path functional state may be collected and counted in advance, and corresponding image categories are labeled, for example, the collected and counted waveform images include an image corresponding to the abnormal optical path function and an image corresponding to the normal optical path function. The method comprises the steps of inputting each waveform image into a preset convolutional neural network model to execute two classification training (namely, two classifications including a normal waveform image and an abnormal waveform image) so as to obtain an abnormal waveform image recognition model, wherein the abnormal waveform image recognition model can recognize a given input image and output the probability value that a waveform in the image is an abnormal waveform.

308. And determining the optical path function state of the optical cable detection device according to the corresponding relation between the pre-counted waveform classification and the optical path function state and the waveform classification corresponding to each oscillogram.

Illustratively, the waveform classification includes two classifications, which respectively correspond to a waveform diagram of an abnormal light path function and a waveform diagram of a normal light path function, and the server classifies waveforms corresponding to each output waveform diagram, thereby determining whether the light path functions of the optical cable detection device are normal or abnormal.

Based on the method provided by the embodiment of the application, the waveform representation in the oscillogram detects the electrical analog signals corresponding to the optical return signals, and the waveform image characteristics under different optical path function states are determined in advance based on data statistics, so that the oscillogram displayed in the upper computer is subjected to image classification to realize waveform identification, the optical path function states are directly determined, a user does not need to read and identify the waveforms, and the overall efficiency and accuracy of optical path function detection are improved.

Referring to fig. 4, a fourth optical path function detection method is provided in this embodiment, and is applied to an optical cable detection apparatus, where the optical cable detection apparatus includes two optical cable detection optical paths, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point, optical fiber detection devices on the two optical cable detection optical paths are an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, respectively, and the optical cable detection apparatus further includes an optical switch, and the optical path function detection method includes:

401. acquiring a target detection optical fiber to be detected;

402. displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

403. calling an Optical Time Domain Reflectometer (OTDR) to emit first detection light, and switching an optical switch to a first connection point to input the first detection light to a target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light;

404. calling an OTDR (optical time domain reflectometer) to receive the first reflected light, and performing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light;

405. drawing a first waveform detection result according to the electric signal corresponding to the first reflected light;

406. calling a phase-sensitive optical time domain reflectometer phi-OTDR (optical time domain reflectometer) to transmit second detection light, and switching an optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflected light;

407. calling a phase-sensitive optical time domain reflectometer phi-OTDR to receive second reflected light, and performing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light;

408. drawing a second waveform detection result according to the electric signal corresponding to the second reflected light;

409. calling upper computer equipment to receive and display a waveform detection result of each optical fiber detection equipment on a target detection optical fiber section at the position of a tail fiber melting point on each optical cable detection optical path;

steps 301 to 309 are similar to the steps 201 to 209 described above, and are not described here again.

410. Respectively obtaining waveform diagrams of a target detection optical fiber section in the waveform detection result under an Optical Time Domain Reflectometer (OTDR) and a phase-sensitive optical time domain reflectometer (phi-OTDR), wherein the waveform diagrams are images of the waveform detection result;

it can be understood that the detection light source signal output by the optical time domain reflectometer OTDR is a broadband light source signal, and the detection light source signal output by the phase sensitive optical time domain reflectometer phi-OTDR is a narrowband light source signal, and the two signals detect the target detection optical fiber section from different functional characteristics, so as to obtain different signal waveform diagrams.

411. Performing feature extraction on each oscillogram to obtain a corresponding oscillogram feature of each oscillogram;

in specific implementation, the server can perform multilayer convolution on a first waveform diagram of a target detection optical fiber section under an Optical Time Domain Reflectometer (OTDR) and a second waveform diagram under a phase-sensitive optical time domain reflectometer (phi-OTDR) respectively based on a preset convolution neural network, and perform nonlinear activation on convolution results of the first waveform diagram and the second waveform diagram through an activation function, so as to extract waveform image characteristics of a waveform image (namely a signal wave image).

412. Based on the data statistical characteristics, performing classification calculation on the waveform image characteristics corresponding to each oscillogram to obtain the waveform classification corresponding to each oscillogram;

in the specific implementation, waveform images corresponding to each optical path function detection device can be collected and counted in advance, and corresponding image categories are labeled, for example, the collected and counted waveform images include a common signal waveform image of the OTDR optical path function in an abnormal state and a common signal waveform image of the OTDR optical path function in a normal state, each signal waveform image is input into a preset convolutional neural network model to perform binary training, so that an abnormal recognition model of the OTDR optical path function is obtained, then the waveform image features of the target detection optical fiber section under the OTDR of the optical time domain reflectometer are input into the abnormal recognition model of the OTDR optical path function by the server to be recognized, and a probability value that the waveform in the first waveform image corresponds to the OTDR optical path function and is abnormal is output. Similarly, a common signal waveform image of the phi-OTDR optical path function in an abnormal state and a common signal waveform image of the phi-OTDR optical path function in a normal state can be collected and counted, so that an abnormal recognition model of the phi-OTDR optical path function is trained and generated, the waveform image characteristics of the target detection optical fiber section under the phase sensitive optical time domain reflectometer phi-OTDR are input into the abnormal recognition model of the phi-OTDR optical path function for recognition, and the probability value that the waveform in the second waveform image corresponds to the abnormal phi-OTDR optical path function is output. The training processes of the abnormal recognition models of the two light path functions are similar, and the difference is in the difference of waveform image training samples.

413. And determining the optical path function state of the optical cable detection device according to the corresponding relation between the pre-counted waveform classification and the optical path function state and the waveform classification corresponding to each oscillogram.

In this embodiment of the present application, the number of the waveform classifications is not specifically limited, for example, the waveform classifications of the OTDR optical path function and the phi-OTDR optical path function both include only two classifications, that is, a type a waveform and a type B waveform, and the difference between the two waveform classifications includes, but is not limited to, a waveform, a characteristic peak, and the like, where the optical path function state corresponding to the type a waveform includes normal OTDR optical path function or normal phi-OTDR optical path function, and the optical path function state corresponding to the type B waveform includes abnormal OTDR optical path function or abnormal phi-OTDR optical path function.

Referring to fig. 5, an embodiment of the present application provides a fifth optical path function detection method, which is applied to an optical cable detection device, where the optical cable detection device includes two optical cable detection optical paths, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point, optical fiber detection devices on the two optical cable detection optical paths are an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, respectively, and the optical cable detection device further includes an optical switch, and the optical path function detection method includes:

501. acquiring a target detection optical fiber to be detected;

502. displaying a target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

503. calling an Optical Time Domain Reflectometer (OTDR) to emit first detection light, and switching an optical switch to a first connection point to input the first detection light to a target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light;

504. calling an OTDR (optical time domain reflectometer) to receive the first reflected light, and performing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light;

505. drawing a first waveform detection result according to the electric signal corresponding to the first reflected light;

506. calling a phase-sensitive optical time domain reflectometer phi-OTDR (optical time domain reflectometer) to transmit second detection light, and switching an optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflected light;

507. calling a phase-sensitive optical time domain reflectometer phi-OTDR to receive second reflected light, and performing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light;

508. drawing a second waveform detection result according to the electric signal corresponding to the second reflected light;

509. calling upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path;

510. respectively obtaining waveform diagrams of a target detection optical fiber section under an optical time domain reflectometer OTDR and a phase sensitive optical time domain reflectometer phi-OTDR in a waveform detection result, wherein the waveform diagrams are images of the waveform detection result;

511. performing feature extraction on each oscillogram to obtain a corresponding oscillogram feature of each oscillogram;

512. based on the data statistical characteristics, performing classification calculation on the waveform image characteristics corresponding to each oscillogram to obtain the waveform classification corresponding to each oscillogram;

513. determining the optical path function state of the optical cable detection device according to the corresponding relation between the pre-counted waveform classification and the optical path function state and the waveform classification corresponding to each oscillogram;

steps 501 to 513 are similar to the steps 401 to 413 described above, and detailed description thereof is omitted here.

514. Based on data statistical characteristics, performing regression calculation on waveform image characteristics corresponding to each waveform map to obtain a coordinate position of an abnormal attenuation point in each waveform map, wherein the waveform maps are used for indicating that the attenuation value of detection light in the propagation process of the optical fiber changes along with the change of the length value of the optical fiber, the coordinate position comprises an abscissa and an ordinate, the abscissa represents the length value of the optical fiber, and the ordinate represents the attenuation value of the detection light;

515. and determining the abnormal loss position of the target detection optical fiber section according to the abscissa position of the abnormal attenuation point.

In the specific implementation, a server acquires common waveform images of the optical cable detection device under the condition of abnormal OTDR optical path functions in advance from a data set, marks coordinate positions of abnormal attenuation points in the images, then executes regression training on a convolutional neural network model based on the waveform images and the marked coordinate positions of the abnormal attenuation points, namely predicts the coordinate positions of the abnormal attenuation points based on an cross-over comparison algorithm, judges whether the prediction is correct according to a marking result, adjusts network parameters until the prediction is correct, and obtains an abnormal loss position prediction model corresponding to the OTDR optical path functions; similarly, the server acquires a common waveform image of the optical cable detection device under the condition of phi-OTDR optical path function abnormality from the data set in advance, and marks the coordinate position of an abnormal attenuation point, so as to train and generate an abnormal loss position prediction model of the phi-OTDR optical path function, the server inputs the waveform image characteristics of the target detection optical fiber section under the phase sensitive optical time domain reflectometer phi-OTDR into the abnormal loss position prediction model corresponding to the phi-OTDR optical path function for regression calculation, so that the position coordinates of the abnormal attenuation point of the target detection optical fiber section in the waveform image under the phase sensitive optical time domain reflectometer phi-OTDR are obtained, and a second abnormal loss position in the target detection optical fiber section is determined.

Based on the method provided by the embodiment of the application, the abnormal attenuation point in the analog signal is directly positioned based on the target detection and the data statistical characteristics, and the specific abnormal position in the optical fiber detection road section is determined according to the optical fiber length value corresponding to the abnormal attenuation point, so that the abnormal position in the target optical fiber detection road section is positioned while the optical cable detection device is used for detecting.

The above method for detecting optical path functions in the embodiment of the present application is described, and the following method for detecting optical path functions in the embodiment of the present application is described with reference to fig. 6, where the embodiment of the present application provides an optical path function detection apparatus, and is applied to an optical cable detection apparatus, the optical cable detection apparatus includes at least one optical cable detection optical path, each optical cable detection optical path is provided with a plurality of optical detection elements connected in series in sequence, two adjacent optical detection elements are connected by a fiber melting point, and the optical detection element on each optical cable detection optical path at least includes an optical fiber detection device, and the optical path function detection apparatus includes: a detection optical fiber obtaining module 601, configured to obtain a target detection optical fiber to be detected; the detection section selection module 602 is configured to display a target detection optical fiber based on preset upper computer equipment, and receive a target detection optical fiber section selected by a user in the upper computer equipment, where the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber; the laser pulse detection module 603 is configured to respectively call each optical fiber detection device to detect a target detection optical fiber section, where each optical fiber detection device corresponds to one optical path function of the detection optical cable detection device; the detection signal display module 604 is used for calling the upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path; and a detection result determining module 605, configured to determine a light path function state of the optical cable detection apparatus according to a waveform detection result received and displayed at a position where a last fiber melting point on each optical cable detection light path of the upper computer device is located.

Based on the device provided by the embodiment of the application, various optical path function tests are respectively executed on the selected optical fiber detection road section, and the detection waveform result is obtained at the tail fiber melting point position on each detection optical path, so that whether each optical path function of the optical cable detection device is abnormal or not can be determined according to each waveform detection result.

Referring to fig. 7, another optical path function detecting device provided in an embodiment of the present application is applied to an optical cable detecting device, where the optical cable detecting device includes at least one optical cable detecting optical path, each optical cable detecting optical path is provided with a plurality of optical detecting elements connected in series in sequence, two adjacent optical detecting elements are connected by a fiber melting point, each optical detecting element on the optical cable detecting optical path includes at least one optical fiber detecting device, and the optical path function detecting device includes: a detection optical fiber obtaining module 601, configured to obtain a target detection optical fiber to be detected; the detection section selection module 602 is configured to display a target detection optical fiber based on preset upper computer equipment, and receive a target detection optical fiber section selected by a user in the upper computer equipment, where the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber; the laser pulse detection module 603 is configured to call each optical fiber detection device to detect a target detection optical fiber segment, where each optical fiber detection device corresponds to a light path function of the optical cable detection device; the detection signal display module 604 is used for calling the upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path; and a detection result determining module 605, configured to determine a light path function state of the optical cable detection apparatus according to a waveform detection result received and displayed at a position where a last fiber melting point on each optical cable detection light path of the upper computer device is located.

In one possible design, the optical path function detection apparatus further includes: the device parameter receiving module 606 is used for receiving device test parameters input by a user in the upper computer device; and an apparatus parameter configuration module 607, configured to configure apparatus parameters for each optical fiber detection apparatus according to the apparatus test parameters, where the apparatus test parameters at least include a pulse width and a measurement distance of the detection light.

In one possible design, the waveform detection result includes a waveform and no waveform, and the optical cable detection apparatus further includes: the abnormal positioning module 608 is configured to, if it is determined that the optical cable detection apparatus has an abnormal detection optical path with an abnormal function, sequentially move forward a detection point position of the abnormal detection optical path from a last fiber fusing point, and detect an optical path function state of the abnormal detection optical path after each forward movement, so as to determine an abnormal fiber fusing point position of the abnormal detection optical path.

In a possible design, the optical cable detection apparatus further includes an optical switch, the optical cable detection apparatus includes two optical cable detection optical paths, optical fiber detection devices on the two optical cable detection optical paths are respectively an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer phi-OTDR, and the laser pulse detection module 603 specifically includes: a first detection light input unit 6031, configured to invoke an optical time domain reflectometer OTDR to emit first detection light, and switch an optical switch to a first connection point to input the first detection light to a target detection optical fiber segment, where the first detection light is continuously attenuated and reflected in the target detection optical fiber segment to obtain first reflected light; a first reflected light analyzing unit 6032, configured to invoke an optical time domain reflectometer OTDR to receive first reflected light, and perform photoelectric signal conversion on the first reflected light, so as to obtain an electrical signal corresponding to the first reflected light; a first waveform drawing unit 6033 for drawing a first waveform detection result from an electric signal corresponding to the first reflected light; a second detection light input unit 6034, configured to invoke the phase-sensitive optical time domain reflectometer phi-OTDR to emit second detection light, and switch the optical switch to a second connection point to input the second detection light to the target detection optical fiber segment, where the second detection light is continuously attenuated and reflected in the target detection optical fiber segment to obtain second reflected light; a second reflected light analyzing unit 6035, configured to invoke the phase-sensitive optical time domain reflectometer phi-OTDR to receive second reflected light, and perform photoelectric signal conversion on the second reflected light to obtain an electrical signal corresponding to the second reflected light; a second waveform drawing unit 6036 that draws a second waveform detection result from the electric signal corresponding to the second reflected light.

In a possible design, the detection result determining module 605 specifically includes: a waveform image acquisition unit 6051, configured to acquire a waveform diagram of the target detection optical fiber segment in the waveform detection result under each optical fiber detection device, where the waveform diagram is an image of the waveform detection result; a feature extraction unit 6052 configured to perform feature extraction on each waveform map to obtain a waveform image feature corresponding to each waveform map; a classification calculation unit 6053, configured to perform classification calculation on the waveform image features corresponding to each waveform diagram based on the data statistical characteristics, so as to obtain a waveform classification corresponding to each waveform diagram; a state determination unit 6054 configured to determine the optical path functional state of the optical cable detection apparatus according to the correspondence between the waveform classification and the optical path functional state counted in advance and the waveform classification corresponding to each waveform diagram.

Based on the device that this application embodiment provided, the modularized design lets the hardware of each position of light path function detection device be absorbed in the realization of a certain function, and the maximize has realized the performance of hardware, and the modularized design has also reduced the coupling nature between the module of device simultaneously, and is convenient more maintain.

The optical path function detection apparatus in the embodiment of the present application is described in detail in terms of the modular functional entity in fig. 6 to 7, and the optical path function detection apparatus in the embodiment of the present application is described in detail in terms of the hardware processing.

Fig. 8 is a schematic structural diagram of an optical circuit function detection apparatus provided in an embodiment of the present application, where the optical circuit function detection apparatus 800 may have a relatively large difference due to different configurations or performances, and may include one or more processors 810 (e.g., one or more processors) and a memory 820, and one or more storage media 830 (e.g., one or more mass storage devices) storing an application 833 or data 832. Memory 820 and storage medium 830 may be, among other things, transitory or persistent storage. The program stored in the storage medium 830 may include one or more modules (not shown), each of which may include a series of instruction operations in the optical path function detection apparatus 800. Further, the processor 810 may be configured to communicate with the storage medium 830 and execute a series of instruction operations in the storage medium 830 on the optical path function detection apparatus 800.

The optical-path functionality detection apparatus 800 may also include one or more power supplies 840, one or more wired or wireless network interfaces 850, one or more input-output interfaces 860, and/or one or more operating systems 831, such as Windows service, mac OS X, unix, linux, freeBSD, and so forth. It will be understood by those skilled in the art that the optical path function detection apparatus configuration shown in fig. 8 does not constitute a limitation of the optical path function detection apparatus, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.

The present application further provides an optical path function detection apparatus, where the computer apparatus includes a memory and a processor, where the memory stores computer-readable instructions, and the computer-readable instructions, when executed by the processor, cause the processor to perform the steps of the optical path function detection method in the foregoing embodiments.

The present application also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium, and may also be a volatile computer-readable storage medium, having stored therein instructions, which, when executed on a computer, cause the computer to perform the steps of the optical path function detection method.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, or all or part of the technical solutions, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims

1. The utility model provides a light path function detection method, is applied to optical cable detection device, optical cable detection device includes at least one optical cable detection light path, is equipped with a plurality of light detection element that establish ties in proper order on every optical cable detection light path, connects through a melting fiber point between two adjacent light detection element, and light detection element on every optical cable detection light path includes an optical fiber detection equipment at least, its characterized in that, light path function detection method includes:

acquiring a target detection optical fiber to be detected;

displaying the target detection optical fiber based on preset upper computer equipment, and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

respectively calling each optical fiber detection device to detect the target detection optical fiber section, wherein each optical fiber detection device correspondingly detects one optical path function of the optical cable detection device;

calling the upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path;

and determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed by the upper computer equipment at the position of the tail fiber melting point on each optical cable detection optical path.

2. The method according to claim 1, wherein the optical cable detection apparatus further includes an optical switch, the optical cable detection apparatus includes two optical cable detection optical paths, the optical fiber detection devices on the two optical cable detection optical paths are an optical time domain reflectometer OTDR and a phase-sensitive optical time domain reflectometer Φ -OTDR, respectively, and the respectively invoking each optical fiber detection device to detect the target detection optical fiber segment includes:

calling the OTDR to emit first detection light, and switching the optical switch to a first connection point to input the first detection light into the target detection optical fiber section, wherein the first detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain first reflection light;

calling the OTDR to receive the first reflected light, and performing photoelectric signal conversion on the first reflected light to obtain an electric signal corresponding to the first reflected light;

drawing a first waveform detection result according to the electric signal corresponding to the first reflected light;

calling the phase-sensitive optical time domain reflectometer phi-OTDR to emit second detection light, and switching the optical switch to a second connection point to input the second detection light to the target detection optical fiber section, wherein the second detection light is continuously attenuated and reflected in the target detection optical fiber section to obtain second reflection light;

calling the phase-sensitive optical time domain reflectometer phi-OTDR to receive the second reflected light, and performing photoelectric signal conversion on the second reflected light to obtain an electric signal corresponding to the second reflected light;

and drawing a second waveform detection result according to the electric signal corresponding to the second reflected light.

3. The optical path function detection method according to claim 2, wherein the waveform detection result includes a waveform and no waveform, and determining the optical path function state of the optical cable detection apparatus according to the waveform detection result received and displayed by the upper computer device at the position of the last fiber melting point on each optical cable detection optical path includes:

if the waveform detection result of the target detection optical fiber section under the phase-sensitive optical time domain reflectometer phi-OTDR in the waveform detection result is a waveform, applying a vibration signal to the target detection optical fiber section;

detecting whether the waveform vibrates after applying a vibration signal, and if not, determining that the phi-OTDR optical path of the optical cable detection device is abnormal;

and if the waveform detection result of the target detection optical fiber section under the phase-sensitive optical time domain reflectometer phi-OTDR is non-waveform, determining that the function of the phi-OTDR optical path of the optical cable detection device is abnormal.

4. The optical path function detection method according to claim 1, wherein after determining the optical path function state of the optical cable detection apparatus according to the waveform detection result received and displayed by the upper computer device at the position of the last fiber melting point on each optical cable detection optical path, the method further comprises:

if the optical cable detection device is determined to have an abnormal detection optical path with abnormal function, the detection point position of the abnormal detection optical path is moved forwards from the tail fiber melting point in sequence, and the optical path function state of the abnormal detection optical path is detected after each forward movement, so that the position of the abnormal fiber melting point of the abnormal detection optical path is determined.

5. The optical path function detection method according to claim 1, wherein the determining the optical path function state of the optical cable detection apparatus according to the waveform detection result received and displayed by the upper computer device at the position of the last fiber melting point on each optical cable detection optical path includes:

acquiring a oscillogram of the target detection optical fiber section under each optical fiber detection device in the waveform detection result, wherein the oscillogram is an image of the waveform detection result;

performing feature extraction on each oscillogram to obtain a corresponding oscillogram feature of each oscillogram;

based on the data statistical characteristics, performing classification calculation on the waveform image characteristics corresponding to each oscillogram to obtain the waveform classification corresponding to each oscillogram;

and determining the optical path function state of the optical cable detection device according to the corresponding relation between the pre-counted waveform classification and the optical path function state and the waveform classification corresponding to each oscillogram.

6. The optical path function detecting method according to claim 5, wherein after determining the optical path function state of the optical cable detecting apparatus according to the pre-counted correspondence between the waveform classification and the optical path function state and the waveform classification corresponding to each waveform diagram, the method further comprises:

based on data statistical characteristics, performing regression calculation on waveform image features corresponding to each waveform map to obtain a coordinate position of an abnormal attenuation point in each waveform map, wherein the waveform maps are used for indicating that the attenuation value of detection light in the propagation process of an optical fiber changes along with the change of the length value of the optical fiber, the coordinate position comprises an abscissa and an ordinate, the abscissa represents the length value of the optical fiber, and the ordinate represents the attenuation value of the detection light;

and determining the abnormal loss position of the target detection optical fiber section according to the abscissa position of the abnormal attenuation point.

7. The optical path function detection method according to any one of claims 1 to 6, wherein before the separately invoking each optical fiber detection device to detect the target detection optical fiber segment, further comprises:

receiving equipment test parameters input by a user in the upper computer equipment;

and configuring equipment parameters for each optical fiber detection equipment according to the equipment test parameters, wherein the equipment test parameters at least comprise pulse width and measurement distance of the detection light.

8. The utility model provides a light path function detection device, is applied to optical cable detection device, including at least one optical cable detection light path in the optical cable detection device, every optical cable detects and is equipped with a plurality of light detection element who establishes ties in proper order on the light path, connects through a melting fiber point between two adjacent light detection element, and light detection element on every optical cable detection light path includes an optical fiber detection equipment at least, its characterized in that, light path function detection device includes:

the detection optical fiber acquisition module is used for acquiring a target detection optical fiber to be detected;

the detection section selection module is used for displaying the target detection optical fiber based on preset upper computer equipment and receiving a target detection optical fiber section selected by a user in the upper computer equipment, wherein the target detection optical fiber section is an optical fiber section to be tested in the target detection optical fiber;

the laser pulse detection module is used for respectively calling each optical fiber detection device to detect the target detection optical fiber section, wherein each optical fiber detection device correspondingly detects one optical path function of the optical cable detection device;

the detection signal display module is used for calling the upper computer equipment to receive and display the waveform detection result of each optical fiber detection equipment on the target detection optical fiber section at the position of the tail fiber melting point on each optical cable detection optical path;

and the detection result judging module is used for determining the optical path function state of the optical cable detection device according to the waveform detection result received and displayed at the position of the last fiber melting point of the upper computer equipment on each optical cable detection optical path.

9. An optical path function detection apparatus characterized by comprising: a memory and at least one processor, the memory having instructions stored therein;

the at least one processor invoking the instructions in the memory to cause the optical path function detection apparatus to perform the steps of the optical path function detection method of any one of claims 1-7.

10. A computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor, implement the steps of the optical path function detection method according to any one of claims 1-7.