CN113890599B - Optical path protection device, optical path protection method, electronic equipment and storage medium - Google Patents
Optical path protection device, optical path protection method, electronic equipment and storage medium Download PDFInfo
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- CN113890599B CN113890599B CN202111136963.0A CN202111136963A CN113890599B CN 113890599 B CN113890599 B CN 113890599B CN 202111136963 A CN202111136963 A CN 202111136963A CN 113890599 B CN113890599 B CN 113890599B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
Abstract
The invention provides an optical path protection device, an optical path protection method, electronic equipment and a storage medium; the device comprises: the control module and the multipath protection module comprise a plurality of controlled optical switch assemblies; the controlled optical switch component is connected with the control module; the controlled optical switch assembly comprises a first input end, a second input end and an output end, wherein the first input end is connected with first equipment through a first transmission line; the second input end is connected with the first equipment through a second transmission line; the output end is connected with the second equipment; the first equipment corresponds to the second equipment one by one; the control module is used for acquiring the power parameters of the first input end and the second input end, and generating a control signal under the condition that the power parameters meet the preset switching conditions; and the multipath protection module is used for changing the connection conduction state between the first input end and the second input end of the corresponding controlled optical switch assembly and the output end according to the control signal.
Description
Technical Field
The present invention relates to the field of optical fiber automatic switching protection systems, and in particular, to an optical path protection device, an optical path protection method, an electronic device, and a storage medium.
Background
The optical fiber automatic switching protection system (Optical Fiber Line Auto Switch Protection Equipment, OLP) is used as a system on an optical cable link, has the characteristics of independent and transparent data transmission, high safety and quick fault recovery, and can be matched with equipment or devices in other optical networks to construct an optical communication network system with no blocking, high reliability, safety, flexibility and strong disaster resistance.
OLP has two types of transmission links, a primary link and a backup link. OLP can use at least one of these two transmission links for the transmission of optical signals.
Because the stability of the optical network directly affects the design and construction of the network, and the protection and recovery of the optical path layer have great influence on the safety and stability of the whole optical network. The optical path automatic switching protection system can effectively prevent and compress faults of the optical cable transmission system and improve the anti-blocking and disaster-resistant capacities of the optical communication network. Therefore, the optical path automatic switching protection system is widely applied to the existing network of a DCI machine room of an Internet manufacturer.
At present, with the rapid growth of DCI data service and the appearance of novel high-capacity comprehensive data bearing network, scheduling data network and the like, new requirements are put forward for backbone transmission network; conventional optical fiber automatic switching protection systems have failed to meet the rapidly growing business demands.
Disclosure of Invention
The embodiment of the invention provides an optical path protection device, an optical path protection method, electronic equipment and a storage medium. The technical scheme of the embodiment of the invention is realized as follows: the embodiment of the invention also provides a light path protection device, which comprises: a control module and a multi-path protection module;
the multi-path protection module comprises a plurality of controlled optical switch assemblies, and the controlled optical switch assemblies are connected with the control module; the controlled optical switch assembly comprises a first input end, a second input end and an output end, wherein the first input end is connected with first equipment through a first transmission line; the second input end is connected with the first equipment through a second transmission line; the output end is connected with second equipment; the first equipment corresponds to the second equipment one by one; the controlled optical switch assembly is used for switching a conduction path between the first equipment and the second equipment;
the control module is used for acquiring the power parameters of the first input end and the second input end, judging whether the power parameters meet preset switching conditions, and generating a control signal under the condition that the power parameters meet the preset switching conditions;
The multi-path protection module is used for changing the connection conduction state between the first input end and the second input end of the corresponding controlled optical switch assembly and the output end according to the control signal.
In the above scheme, the control module includes: the sampling assembly, the filtering assembly and the switching assembly; the sampling component is connected with the plurality of controlled optical switch components, and the filtering component is respectively connected with the sampling component and the switching component;
the sampling component is used for collecting power data of the first transmission route and the second transmission route in real time;
the filtering component is used for carrying out filtering processing on the power data to obtain the power parameters;
and the switching component is used for sending the control signal to the multi-path protection module when the power parameter meets a preset switching condition.
In the above scheme, the device further includes: the parameter configuration module is connected with the control module;
the parameter configuration module is used for determining a switching mode and a switching threshold value of the controlled optical switch assembly;
the control module is further configured to determine the preset switching condition according to the switching mode and the switching threshold.
In the above scheme, the parameter configuration module is further configured to: according to the power parameters at the power points before and after the multipath protection module switches the conducting path, graphically displaying the change of the power parameters at the power points before and after switching; wherein the power point comprises: the first input, the second input and the output of the controlled optical switch assembly.
In the above scheme, the control module is further used for: and when the switching mode is a forced switching mode, sending a switching instruction to the multipath protection module according to the switching information output by the parameter configuration module, and controlling the corresponding controlled optical switch module to switch the conducting path.
In the scheme, the control module is connected with the plurality of circuit board cards;
the control module is also used for obtaining the light path alarm information output by the circuit board card and controlling the corresponding controlled optical switch assembly to switch the conduction path based on the light path alarm information.
An embodiment of the present invention provides a light path protection method, which is applied to the light path protection device provided in the foregoing embodiment, including: acquiring power parameters of a first transmission line and a second transmission line of each first device;
Judging whether the power parameter meets a preset switching condition, and switching the conduction paths between the first equipment and the second equipment corresponding to the first equipment under the condition that the power parameter meets the preset switching condition.
In the above scheme, the method further comprises:
responding to a setting operation, determining a switching mode and the preset switching condition corresponding to the switching mode; wherein the switching mode includes: forced switching mode, manual switching mode, and automatic switching mode.
In the above scheme, the method further comprises:
determining a switching mode and a switching threshold of the controlled optical switch assembly in response to a setting operation;
and determining the preset switching condition according to the switching mode and the switching threshold value.
In the above scheme, the method further comprises:
and acquiring optical path alarm information output by the circuit board card, and switching the conduction paths between the first equipment and the second equipment corresponding to the first equipment based on the optical path alarm information.
The embodiment of the invention also provides electronic equipment, which at least comprises: a processor and a storage medium configured to store executable instructions, wherein: the processor is configured to execute stored executable instructions configured to perform the optical path protection method provided by the above embodiments.
The embodiment of the invention also provides a computer readable storage medium which stores executable instructions, and when the executable instructions are executed by a processor, the optical path protection method provided by the embodiment of the invention is realized.
According to the embodiment of the invention, the optical path protection device with a plurality of controlled optical switch components and one control component is adopted to independently monitor the power parameters of the optical channels (the first transmission line and the second transmission line) of the optical path, and the corresponding optical channels are automatically switched according to the power parameters, so that the protection switching of multiple paths of optical signals is realized, and meanwhile, the influence of the optical channel switching of the optical paths is reduced, thereby meeting the rapidly-growing service requirement.
Drawings
Fig. 1 is a schematic structural diagram of an optical path protection device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a light path protection method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a multi-path OLP protection device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a multi-path OLP protection optical path connection provided in an embodiment of the present invention;
FIG. 5 is a flow chart of a multi-path OLP protection method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be further described in detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, and the described embodiments should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
In the following description, the terms "first", "second", "third" and the like are merely used to distinguish similar objects and do not represent a specific ordering of the objects, it being understood that the "first", "second", "third" may be interchanged with a specific order or sequence, as permitted, to enable embodiments of the invention described herein to be practiced otherwise than as illustrated or described herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.
The following describes an optical path protection device provided by the embodiment of the present invention. Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical path protection device according to an embodiment of the present invention; in some embodiments, the optical path protection device may be applied to an optical fiber automatic switching protection system, and the optical path protection device 1000 provided in the embodiments of the present invention includes: a control module 110 and a multi-path protection module 120;
the multi-path protection module 120 includes a plurality of controlled optical switch assemblies 130, and the controlled optical switch assemblies are connected with the control module 120; the controlled optical switch assembly comprises a first input 1301, a second input 1302 and an output 1303, wherein the first input 1301 is connected with a first device through a first transmission line; the second input 1302 is connected to the first device through a second transmission line; the output end 1303 is connected with a second device; the first equipment corresponds to the second equipment one by one; the controlled optical switch assembly is used for switching a conduction path between the first equipment and the second equipment;
the control module 120 is configured to obtain power parameters of the first input end 1301 and the second input end 1302, determine whether the power parameters meet a preset switching condition, and generate a control signal when the power parameters meet the preset switching condition;
The multi-path protection module is used for changing the connection conduction state between the first input end and the second input end of the corresponding controlled optical switch assembly and the output end according to the control signal.
In an embodiment, the first device and the second device are an optical transmitting device and an optical receiving device, respectively, and a transmission path of an optical signal between the first device and the second device is an optical path corresponding to the optical signal.
In one embodiment, a controlled switch in the multi-path protection module may be used to protect an optical path. The control module can independently control the controlled switches respectively.
In one embodiment, the controlled optical switch assembly includes a plurality of input terminals and an output terminal, wherein the plurality of input terminals are respectively connected with a plurality of cables carrying optical signals output by the first device, the output terminal is connected with the second device, and the controlled optical switch assembly switches the optical signal transmission path between the first device and the second device by conducting the connection between the selected input terminal and the output terminal. Wherein the controlled optical switch assembly includes, but is not limited to, a controllable multi-way optical switch.
In an embodiment, an output signal of the first device is subjected to optical splitting processing by an optical splitter to obtain a first optical signal and a second optical signal, where the first transmission line and the second transmission line are cables for transmitting the first optical signal and the second optical signal, respectively. In one embodiment, the cable comprises an optical fiber.
In an embodiment, the controlled optical switch assembly further comprises a controlled end for receiving the control signal. The control module is connected with the first input end, the second input end and the controlled end of the controlled optical switch assemblies and used for acquiring the optical power of the first transmission line and the second transmission line. The preset switching conditions can be set by a user or can be preset fixed switching conditions. In some embodiments, the preset switching condition is a constraint condition set according to an actual requirement.
In an embodiment, when the optical power of the first input terminal and the second input terminal of the controlled optical switch assembly meets a preset switching condition, the controlled optical switch assembly switches the conducting state of the connection between the first input terminal and the second input terminal thereof and the output terminal respectively. For example: if the connection between the first input end and the output end of the current controlled optical switch assembly is in a conducting state, and the connection between the second input end and the output end is in a disconnecting state, when the optical power of the first input end and the second input end of the controlled optical switch assembly meets the preset switching condition, the connection between the first input end and the output end of the controlled optical switch assembly is automatically disconnected, and the connection between the second input end and the output end is automatically conducted. Also for example: if the connection between the first input end and the output end of the current controlled optical switch assembly is in a disconnection state, and the connection between the second input end and the output end is in a conduction state, when the optical power of the first input end and the second input end of the controlled optical switch assembly meets the preset switching condition, the connection between the first input end and the output end of the controlled optical switch assembly is automatically conducted, and the connection between the second input end and the output end is automatically disconnected.
In one embodiment, the connections between more than two inputs and outputs of the controlled optical switch assembly cannot be simultaneously conducted among the inputs.
According to the embodiment of the invention, the optical path protection device with a plurality of controlled optical switch components and one control component is adopted to independently monitor the power parameters of the optical channels (the first transmission line and the second transmission line) of the optical path, and the corresponding optical channels are automatically switched according to the power parameters, so that the protection switching of multiple paths of optical signals is realized, and meanwhile, the influence of the optical channel switching of the optical paths is reduced, thereby meeting the rapidly-growing service requirement.
In some embodiments, the control module comprises: the sampling assembly, the filtering assembly and the switching assembly; the sampling component is connected with the plurality of controlled optical switch components, and the filtering component is respectively connected with the sampling component and the switching component;
the sampling component is used for collecting power data of the first transmission route and the second transmission route in real time;
the filtering component is used for carrying out filtering processing on the power data to obtain the power parameters;
and the switching component is used for sending the control signal to the multi-path protection module when the power parameter meets a preset switching condition.
In one embodiment, the control module includes, but is not limited to, a processor with parallel processing functions, such as a programmable device: a field programmable gate array (Field Programmable Gate Array, FP GA).
In an embodiment, the control module further includes a storage component, where the storage component is connected to the acquisition component and is configured to store the power data. The filtering unit carries out weighted averaging on the power data and outputs the processed data to the switching component. The storage component includes, but is not limited to, a power register.
In an embodiment, the collecting component continuously collects the power data of the first transmission line and the second transmission line, the filtering component filters the power data, the power parameters are output to the storage component, and the storage component refreshes the stored power parameters in real time based on the power parameters.
In one embodiment, the multi-way protection device is mounted on a chassis and can share a chassis with a plurality of circuit board cards.
In some embodiments, the apparatus further comprises: the parameter configuration module is connected with the control module;
the parameter configuration module is used for determining a switching mode and a switching threshold value of the controlled optical switch assembly;
The control module is further configured to determine the preset switching condition according to the switching mode and the switching threshold.
In one embodiment, the switching modes include an absolute switching mode and a relative switching mode. The absolute switching mode and the relative switching mode both comprise: forced switching, manual switching, automatic switching 3 kinds of modes. The absolute switching mode and the relative switching mode correspond to different switching thresholds respectively.
In another embodiment, the switching modes include a forced switching mode, a manual switching mode, and an automatic switching mode, each switching mode corresponding to a different switching threshold.
In an embodiment, the parameter configuration module is further configured to send the determined switching mode and/or switching threshold to the control module.
In an embodiment, the control module stores a preset switching condition corresponding to the switching mode, and when the control module receives the switching mode sent by the parameter configuration module, the control module can determine the preset switching condition corresponding to the switching mode and update a switching threshold parameter in the preset switching condition according to the switching threshold.
Specifically, in an embodiment, when the switching mode is the forced switching mode, the parameter configuration module directly sends the switching information input by the user to the control module, and the control module directly sends a control signal corresponding to the switching information to the controlled optical switch assembly of the multi-path protection module according to the switching information, so as to control the controlled optical switch assembly to perform the switching operation, and connect the first transmission line with the second device or connect the second transmission line with the second device. In an embodiment, the switching information is used to indicate a switching line selected by a user.
In an embodiment, when the switching mode is manual inversion, the control module determines whether the power parameter of the transmission line to be switched is greater than a switching threshold, and if the power parameter of the transmission line to be switched is greater than the switching threshold, the control module controls the controlled optical switch module to perform the switching operation.
In an embodiment, when the switching mode is automatic switching, the power parameters of the first transmission line and the second transmission line are compared with a switching threshold, and when the power parameter of the first transmission line is greater than or equal to the switching threshold and the power parameter of the second transmission line is less than the switching threshold, the controlled optical switch assembly switches on the connection between the first input end and the output end to connect the first transmission line with the second device. When the power parameter of the first transmission line is smaller than the switching threshold value and the power parameter of the second transmission line is larger than or equal to the switching threshold value, the controlled optical switch assembly conducts the connection between the second input end and the output end and connects the second transmission line with the second equipment.
In an embodiment, the parameter configuration module is configured to determine a switching mode and a switching threshold of the controlled optical switch assembly in response to the user operation. In another embodiment, the parameter configuration module may set the switching mode and the switching threshold of each controlled optical switch assembly separately.
In another embodiment, the parameter configuration module is further configured to determine a switching condition of the controlled optical switch assembly in response to a setting operation by a user, and send the switching condition to the control module. The control module can control the switching operation of the corresponding controlled optical switch assembly in the multi-path protection module according to the received switching condition.
In an embodiment, the parameter configuration module is further configured to determine a switching mode of the controlled optical switch assembly and a switching condition corresponding to the switching mode in response to a setting operation of a user, and send the switching mode and the switching condition to the control module. And the control module updates the stored switching conditions corresponding to the switching modes according to the received switching modes, stores the received switching modes and the corresponding switching conditions if the switching modes do not exist in the control module, and controls the controlled optical switch assembly according to the switching conditions.
In one embodiment, the parameter configuration module at least includes: an operation panel for configuring the switching mode, the switching threshold and the switching condition by the user and a communication module. The parameter configuration module includes, but is not limited to: and a computer.
In some embodiments, the control module is further configured to: and when the switching mode is a forced switching mode, sending a switching instruction to the multipath protection module according to the switching information output by the parameter configuration module, and controlling the corresponding controlled optical switch module to switch the conducting path. In an embodiment, the handover information includes at least one of: switching mode, switching threshold, switching condition.
In some embodiments, the parameter configuration module is further configured to: according to the power parameters at the power points before and after the multipath protection module switches the conducting path, graphically displaying the change of the power parameters at the power points before and after switching; wherein the power point comprises: the first input, the second input and the output of the controlled optical switch assembly.
In an embodiment, the control module collects power parameters of the power points in a preset time period before and after the controlled optical switch performs the switching operation in real time, and sends collected data to the parameter configuration module, and the parameter configuration module graphically displays the power parameter changes of the power points. The preset time period is typically set to 80ms.
In an embodiment, graphically displaying the change of the power parameter at the power point before and after the switching includes: and drawing a change curve of the power parameters of the power points before and after switching in real time.
According to the embodiment, the normal transmission of the problem-protection optical signal can be conveniently found in time by the maintainer through the display of the power parameters of the power point before and after the controlled optical switch assembly is switched.
In some embodiments, the parameter configuration module further comprises: and the display component is used for displaying data. Display components include, but are not limited to, liquid crystal displays.
In some embodiments, the control module is connected to a plurality of circuit board cards;
the control module is also used for obtaining the light path alarm information output by the circuit board card and controlling the corresponding controlled optical switch assembly to switch the conduction path based on the light path alarm information.
In one embodiment, when the circuit board card monitors that the signal transmission of the optical cable has faults such as instantaneous interruption, the circuit board card outputs the optical path alarm information, wherein the optical path alarm information is used for indicating that the optical path protected by the optical path protection device is abnormal. After receiving the light path alarm information, the control module controls the corresponding controlled optical switch assembly to switch the transmission route of the optical signal according to the light path alarm information.
According to the embodiment, whether the current optical path has faults or not is determined through the optical path alarm information output by the electric plate card, and the optical path is switched when the optical path has faults, so that compared with the judgment of the optical power value of a single passing optical path, the safety of the optical path is further improved, and the protection performance of the optical path protection device is improved.
In one embodiment, the apparatus further comprises a plurality of laminate cards coupled to the control module.
In some embodiments, the optical path protection device provided by the embodiment of the invention can be applied to an optical fiber automatic switching protection system OLP, and in another embodiment, the optical path protection device provided by the embodiment of the invention can also be applied to an och1+1 scene to realize multi-path OLP line protection.
The following continues to describe the optical path protection method provided by the embodiment of the invention. Referring to fig. 2, fig. 2 is a schematic flow chart of an optical path protection method according to an embodiment of the present invention; in some embodiments, the optical path protection method may be applied to the optical path protection device, where the optical path protection method provided by the embodiment of the present invention includes:
s210: acquiring power parameters of a first transmission line and a second transmission line of each first device;
s220: judging whether the power parameter meets a preset switching condition, and switching the conduction paths between the first equipment and the second equipment corresponding to the first equipment under the condition that the power parameter meets the preset switching condition.
In some embodiments, the method further comprises:
determining a switching mode and a switching threshold value in response to the setting operation;
and determining the preset switching condition according to the switching mode and the switching threshold.
In an embodiment, the switching mode includes: forced switching mode, manual switching mode, and automatic switching mode.
In some embodiments, the setting operation includes at least one of: selecting a switching mode; setting a switching threshold; the operation of the optical signal transmission line is switched.
In an embodiment, the method further comprises: and responding to the setting operation, determining a switching mode and the preset switching condition corresponding to the switching mode.
In some embodiments, the method further comprises:
and acquiring optical path alarm information output by the circuit board card, and switching the conduction paths between the first equipment and the second equipment corresponding to the first equipment based on the optical path alarm information.
In some embodiments, the method further comprises: and acquiring power parameters of the first transmission line, the second transmission line and the input end of the second equipment, and graphically displaying the change of the power parameters before and after switching.
In an embodiment, the method further comprises: and analyzing the power parameters of the first transmission line, the second transmission line and the signal receiving end of the second equipment to determine the stability of the switched optical signals.
In an embodiment, when the difference between the power value of the first transmission line or the second transmission line and the power value of the signal receiving end of the second device is smaller than the preset insertion loss threshold, it is determined that the optical signal is in a stable state after switching.
The following are specific examples provided in connection with the above embodiments:
The traditional line side protection is that an OLP board card protects an optical fiber line side, and cannot meet the rapidly-increasing service demand.
Based on this, the present invention provides a method and apparatus for protecting multiple OLP circuits, which can perform protection switching on multiple OLP circuits. The multi-path OLP protection device provided by the example is a high-density protection board card in an OCH1+1 scene, is applied to an optical fiber automatic switching protection system, is independent in multi-path OLP, and the switching of any one of the multi-path OLP lines does not affect the work of other OLP lines, for example, 6 paths can be simultaneously switched, and the switching time cannot be mutually affected. The multi-way OLP protection device provided by the example is installed on a chassis and a plurality of circuit board cards share one chassis.
In the optical fiber automatic switching protection system, an OLP device transmitting end divides service light 1 into 2 and respectively transmits the 2 into a main working route and a standby working route, a receiving end of the OLP compares optical signals of the main working route (main route) and the standby working route (standby route) and selects an available one-way receiving and preferential double-transmitting-receiving-end single-ended switching hot backup mechanism. Two OLP devices are connected using optical fibers, which are called "cables" in OLP routing.
The multi-way OLP protection apparatus of this example includes: the system comprises a plurality of optical switches, a programmable device connected with the optical switches and an upper computer connected with the programmable device. The structure of the multi-path OLP protection device is shown in fig. 3.
The optical switch is used for switching the main and standby paths of the OLP channel.
Each pair of optical ports (a transmitting end and a receiving end of the optical signal) at the line side is provided with an optical switch for switching the main path and the standby path. The plurality of optical switches respectively correspond to different OLP channels.
The programmable device can monitor and protect multiple OLP channels in real time. Programmable devices include, but are not limited to: an FPGA device.
In this example, the programmable device may employ the altera's max10 chip to achieve protection of the OLP channel. An Analog-to-Digital Converter (ADC) IP (Intell ectual Property ) core and a flash memory (flash) are integrated in the max10, so that the complexity of external hardware of the FPGA is reduced, the monitoring protection of multiple OLP channels is well realized by utilizing the parallel processing capability of the FPGA, and the protection switching of each channel is independent and does not influence each other; the protection function can realize protection switching in one OLP board card, thereby being convenient for finding out problems, controlling problems and solving problems.
An exemplary multi-way OLP protection optical path connection schematic is shown in fig. 4. Taking 3-way OLP protection switching as an example for illustration: the programmable device may use an altera FPGA max10, which has 9 channels in its own Analog-to-Digital (AD) module, and may sample the main and standby channels of the 3-channel OLP channel and the power after passing through the optical switch, for example, channel 1-3 AD samples the main and standby channel powers R11 and R12 before the optical switch of the first-channel OLP channel and outputs the power R1x after passing through the optical switch; the channels 4-6 AD sample the main and standby channel powers R21 and R22 before the optical switch of the second OLP channel and output the power R2x after the optical switch; the channels 7-9 AD sample the main and standby channel powers R31 and R32 before the third-channel OLP channel optical switch and output power R3x after the third-channel OLP channel optical switch passes through the optical switch.
Specifically, a programmable device (FPGA) includes: the device comprises an OLP acquisition unit, an OLP average filtering unit and an OLP switching unit.
Under normal conditions, the OLP acquisition unit continuously acquires power of a main path, a standby path and the power after passing through the optical switch, refreshes a power register, and the sampling value is subjected to accumulation and average value solving on each path of AD value through the OLP average value filtering unit and then is output to the OLP switching unit.
When the line side is broken instantaneously, the OLP switching unit performs OLP protection switching according to the main and standby power collected in real time and the OLP protection switching condition determined according to the OLP protection switching mode and the switching threshold value issued by the upper computer, and finally, the optical switch is controlled to realize the switching of the main and standby paths. Specifically, the OLP switching unit compares the real-time collected active/standby power value with the switching threshold, and when the OLP protection switching condition is established, sends a switching instruction to the optical switch.
The upper computer is connected with the programmable device in a wired mode such as a network port or a serial port. The upper computer sends the determined OLP protection switching mode and switching threshold value to the programmable device in a wired mode, wherein the OLP protection switching mode can be divided into absolute mode switching and relative mode switching, the switching threshold value is divided into an absolute switching threshold value and a relative switching threshold value, and the absolute switching threshold value is used for the switching threshold value in the absolute switching mode; in the relative switching mode, the switching threshold value uses a relative switching threshold value.
When the main road or the standby road of the OLP channel is instantaneously disconnected, the programmable device controls the corresponding optical switch to switch the OLP channel according to the power values of the main road and the standby road acquired in real time and the OLP protection switching condition determined based on the OLP protection switching mode and the switching threshold value issued by the upper computer; and when the switching is completed, the power values of the power points before and after the switching are refreshed and reported to the upper computer. The upper computer can draw the change curve of the power points of the optical switch before and after switching in real time, so that maintenance personnel can find problems in time. The power points are the input and output of the optical switch.
In this example, according to the number of optical paths output by the circuit board card in the chassis, a control program can be specifically customized in the programmable device, that is, according to the number of line sides that need to be protected by the circuit board card in the chassis, the number of main and standby paths that need to be protected by the multi-path OLP protection device can be specifically customized.
In the multi-path OLP protection method provided by the present example, the multi-path power detection points are sampled to obtain the power value of each optical path, and according to the OLP protection switching mode and the switching threshold, whether the protection switching condition of each path OLP is satisfied is determined, if so, the optical switch is switched, otherwise, the optical switch is not switched.
Fig. 5 is a schematic flow chart of a multi-path OLP protection method according to an embodiment of the invention. The method comprises the following steps:
in step S501, the upper computer configures an OLP protection switching mode and a switching threshold.
In step S502, the programmable device determines OLP protection switching conditions according to the OLP protection switching mode and the switching threshold.
Step S503, obtaining the power value of each optical path, determining whether the OLP protection switching condition is satisfied, and executing the switching optical switch when the OLP protection switching condition is satisfied.
As shown in fig. 4, after the optical path 1 transmitting device transmits one path of optical signal and outputs two paths of optical signals, which are respectively a main path of optical signal and a standby path of optical signal, the two paths of optical signals are transmitted to the far-end device through two cables, the programmable device samples the main path of optical signal and the standby path of optical signal and compares the sampled main path of optical signal and the standby path of optical signal with a switching threshold value, when the OLP protection switching condition is met, switching optical switching is performed to select one path with better optical path signal quality to the optical path 1 receiving device, so that the protection of the optical link of the optical path 1 is realized; the same protection scheme is performed for optical path 2 and optical path x by the same programmable device. The programmable device can perform parallel protection switching on multiple OLP channels, and each protection switching is independent.
OLP protection switching mode: the method comprises two main types of absolute switching mode and relative switching mode; the absolute switching mode and the relative switching mode comprise a forced switching mode, a manual switching mode and an automatic switching mode, wherein the forced switching mode and the manual switching mode are realized by a user sending a command through an upper computer, and the switching of the optical switch in the automatic switching mode is determined by the judgment result of the switching condition of a programmable device.
The OLP switching threshold includes an absolute switching threshold abs_thd and a relative switching threshold rela_thd.
Judging whether the OLP protection switching condition meets the method: according to the OLP protection switching mode, the comparison between the main and standby power values and the switching threshold value is realized:
the absolute switching mode includes a forced switching mode, a manual switching mode and an automatic switching mode of 3 types.
Forced switching (forced switching to the main or standby) then the switching of the optical switch is directly performed.
Manual switching: judging whether the power value of the current optical path needing to be switched is larger than an absolute switching threshold value, if yes, switching the optical switch, otherwise, not switching.
Automatic switching: comparing the power value of the main and standby paths with an absolute threshold, and when the power value R1 of the main path is not less than the absolute switching threshold abs_thd1 of the main path, namely R1> =abs_thd1, the power value R2 of the standby path is less than the absolute switching threshold abs_thd2 of the standby path, namely R2< abs_thd2; when the two conditions are met simultaneously, the condition that the standby path optical signal is abnormal and the main path optical signal is normal is indicated, and the optical switch is switched to the main path; when the main power value R1 is smaller than the main absolute switching threshold abs_thd1, i.e., r1< abs_thd1, the standby power value R2 is not smaller than the standby absolute switching threshold abs_thd2, i.e., r2> =abs_thd2; when the two conditions are met simultaneously, the main path optical signal is abnormal, the standby path optical signal is normal, and the optical switch is switched to the standby path.
The relative switching mode includes a forced switching mode, a manual switching mode and an automatic switching mode of 3 types.
Forced switching (forced switching to the main or standby) then the switching of the optical switch is directly performed.
Manual switching: judging whether the power value of the current optical path needing to be switched is larger than the relative switching threshold value, if yes, switching the optical switch, otherwise, not switching.
Automatic switching: comparing the power value of the main and standby paths with a relative threshold value, and executing optical switch switching to the main path when the difference value between the power value R1 of the main path and the power value R2 of the standby path is not smaller than the relative switching threshold value rela_thd, namely R1-R2> =rela_thd; when the difference between the standby power value R2 and the main power value R1 is not less than the relative switching threshold value rela_thd, i.e., R2-R1> =rela_thd, the optical switch is executed to switch to the standby.
The multi-path OLP protection method and the device provided by the example can perform protection switching on multi-path OLP lines; as the high-density protection board card in the OCH1+1 scene, multiple OLPs are independent, wherein 1-way switching does not affect other ways of work, for example, 6 ways may have switching at the same time, and switching time cannot affect each other.
The embodiment of the invention also provides electronic equipment, which at least comprises: a processor and a storage medium configured to store executable instructions, wherein:
The processor is configured to execute stored executable instructions configured to perform the optical path protection method provided by the embodiment of the present invention.
It should be noted that fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 6, the device 600 at least includes: a processor 610, a communication interface 620, and a memory 630, wherein:
the processor 610 generally controls the overall operation of the device 600.
The memory 630 is configured to store instructions and applications executable by the processor 610, and may also cache data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or processed by various modules in the processor 610 and the device 600, which may be implemented by a FLASH memory (FLASH) or a random access memory (Random Access Memory, RAM).
It should be noted that, in the embodiment of the present application, if the optical path protection method is implemented in the form of a software functional module, and sold or used as a separate product, the optical path protection method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partly contributing to the prior art, embodied in the form of a software product stored in a storage medium, including several instructions for causing a server to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Correspondingly, the embodiment of the application provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, implements the steps in the optical path protection method provided in the above embodiment.
It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, please refer to the description of the method embodiments of the present application for understanding.
Of course, the device in the embodiments of the present application may also have other similar protocol interaction implementation cases, and those skilled in the art may make various corresponding changes and modifications according to the embodiments of the present application without departing from the spirit and essence of the present application, and these corresponding changes and modifications should fall within the protection scope of the claims attached to the method of the present application.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the modules is only one logical function division, and there may be other divisions in practice, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or modules, whether electrically, mechanically, or otherwise.
The modules described above as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules; can be located in one place or distributed to a plurality of network modules; some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. An optical path protection device, the device comprising: a control module and a multi-path protection module;
the multi-path protection module comprises a plurality of controlled optical switch assemblies, and the controlled optical switch assemblies are connected with the control module; the controlled optical switch assembly comprises a first input end, a second input end and an output end, wherein the first input end is connected with first equipment through a first transmission line; the second input end is connected with the first equipment through a second transmission line; the output end is connected with second equipment; the first equipment corresponds to the second equipment one by one; the controlled optical switch assembly is used for switching a conduction path between the first equipment and the second equipment;
The control module is used for acquiring the power parameters of the first input end and the second input end, judging whether the power parameters meet preset switching conditions, and generating a control signal under the condition that the power parameters meet the preset switching conditions;
the multi-path protection module is used for changing the connection conduction state between the first input end and the second input end of the corresponding controlled optical switch assembly and the output end according to the control signal;
wherein the apparatus further comprises: the parameter configuration module is connected with the control module;
the parameter configuration module is used for determining a switching mode and a switching threshold value of the controlled optical switch assembly;
the control module is further configured to determine the preset switching condition according to the switching mode and the switching threshold.
2. The apparatus of claim 1, wherein the control module comprises: the sampling assembly, the filtering assembly and the switching assembly; the sampling component is connected with the plurality of controlled optical switch components, and the filtering component is respectively connected with the sampling component and the switching component;
the sampling assembly is used for collecting power data of the first transmission line and the second transmission line in real time;
The filtering component is used for carrying out filtering processing on the power data to obtain the power parameters;
and the switching component is used for sending the control signal to the multi-path protection module when the power parameter meets a preset switching condition.
3. The apparatus of claim 1, wherein the parameter configuration module is further configured to: according to the power parameters at the power points before and after the multipath protection module switches the conducting path, graphically displaying the change of the power parameters at the power points before and after switching; wherein the power point comprises: the first input, the second input and the output of the controlled optical switch assembly.
4. The apparatus of claim 1, wherein the control module is further configured to: and when the switching mode is a forced switching mode, sending a switching instruction to the multipath protection module according to the switching information output by the parameter configuration module, and controlling the corresponding controlled optical switch module to switch the conducting path.
5. The apparatus of claim 1, wherein the control module is coupled to a plurality of circuit board cards;
The control module is also used for obtaining the light path alarm information output by the circuit board card and controlling the corresponding controlled optical switch assembly to switch the conduction path based on the light path alarm information.
6. An optical path protection method applied to an optical path protection device, comprising the following steps:
acquiring power parameters of a first transmission line and a second transmission line of each first device;
judging whether the power parameter meets a preset switching condition, and switching a conduction path between each first device and a second device corresponding to the first device under the condition that the power parameter meets the preset switching condition;
wherein the method further comprises:
determining a switching mode and a switching threshold value in response to the setting operation;
and determining the preset switching condition according to the switching mode and the switching threshold.
7. The method of claim 6, wherein the method further comprises:
and acquiring optical path alarm information output by the circuit board card, and switching the conduction paths between the first equipment and the second equipment corresponding to the first equipment based on the optical path alarm information.
8. An electronic device, the device comprising at least: a processor and a storage medium configured to store executable instructions, wherein:
the processor is configured to execute stored executable instructions configured to perform the optical path protection method provided in any one of the preceding claims 6 to 7.
9. A computer-readable storage medium having stored therein computer-executable instructions configured to perform the optical path protection method provided in any one of the preceding claims 6 to 7.
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| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN111917462A (en) * | 2020-06-23 | 2020-11-10 | 深圳震有科技股份有限公司 | Protection control method and device for 5G forward transmission equipment and computer equipment medium |
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| CN112953641B (en) * | 2021-02-09 | 2022-03-18 | 长飞光纤光缆股份有限公司 | OPEN-WDM device and control method |
| CN113098597A (en) * | 2021-03-31 | 2021-07-09 | 北京百度网讯科技有限公司 | Optical protection device and optical power detection method |
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| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN111917462A (en) * | 2020-06-23 | 2020-11-10 | 深圳震有科技股份有限公司 | Protection control method and device for 5G forward transmission equipment and computer equipment medium |
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