CN107528630B - Dual-mode optical fiber monitoring system and method with protected optical path and self-healable faults - Google Patents
Dual-mode optical fiber monitoring system and method with protected optical path and self-healable faults Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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Abstract
A dual-mode optical fiber monitoring system with a protection optical path and capable of self-healing faults relates to the field of optical fiber communication of a power system, and solves the problems that the existing power optical fiber monitoring equipment is single in monitoring mode, and long-time optical fiber communication is interrupted due to untimely manual switching of fault lines; each monitoring unit consists of an originating monitoring subunit and a receiving monitoring subunit, wherein the originating monitoring subunits share an originating light path switching module, and the receiving monitoring subunits share a control processor, a data acquisition module, an optical power monitoring module, an optical detection module, a non-working fiber core monitoring module, a receiving light path switching module, an OTDR (optical time domain reflectometer), a vibration warning module, an optical warning module, a sixth optical switch and a seventh optical switch.
Description
Technical Field
The invention relates to the field of optical fiber communication of power systems, in particular to a dual-mode optical fiber monitoring system and method with a protection optical path and capable of self-healing faults.
Background
Because the optical fiber communication has the characteristics of large capacity, low loss and high speed, the optical fiber communication special network has been widely applied to the communication of the power system, the power optical fiber communication special network can transmit more information with more categories and more complex information, and the reliability and the availability of the operation of the power optical fiber communication network are important guarantees for the safe production and the efficient operation of the power system.
Because the power optical fiber communication network has the characteristics of high coverage rate, dense network, difficult maintenance and large fault influence, especially the urban power system optical fiber laying environment is more complex and is easily influenced by construction and the like, once an optical fiber line in the power optical fiber transmission network breaks down, the caused communication interruption can influence the safe operation of a power enterprise, and great economic loss is brought to the power enterprise. Therefore, the optical fiber communication monitoring of the power system needs to improve the automation degree and the intelligent degree. Most of the existing optical fiber monitoring devices only provide a single function of optical power monitoring or fault detection, and the cost of the devices is high. In order to improve the operation level of the optical fiber line, the on-line monitoring of the working fiber core is abandoned, the non-working fiber core is used for monitoring the optical fiber line, and at the moment, the on-line monitoring equipment of the working fiber core cannot meet the requirement. Once the power fiber communication system needs to change the non-working fiber core to the working fiber core due to the increase of the traffic, the non-working fiber core monitoring equipment cannot operate. Meanwhile, when the existing optical fiber monitoring equipment monitors the optical fiber line fault, the connection and configuration related to the fault optical fiber line switching are needed to be manually implemented on site from a worker to an electric power communication machine room, so that not only is the manual labor wasted, but also the loss of communication such as long-time interruption and the like caused by untimely fault line switching is likely to be caused, the requirements of optical fiber monitoring automation and fault automatic cutting are difficult to meet, and meanwhile, the reliability is also difficult to meet the requirements of certain special fields.
Disclosure of Invention
The invention provides a dual-mode optical fiber monitoring system and a method with a protection optical path and capable of self-healing faults, which are used for solving the problems that the existing power optical fiber monitoring equipment is single in monitoring mode, only monitors optical power of optical fibers or monitors an exclusive optical fiber core, can not realize automatic free switching of working modes, wastes optical fiber resources and manual labor, is high in equipment cost due to low sharing degree of elements in the equipment, and is interrupted in long-time optical fiber communication due to untimely manual switching of fault lines.
The dual-mode optical fiber monitoring system with the protection optical path and the fault self-healing function comprises at least one monitoring unit, wherein each monitoring unit monitors one optical fiber line and can realize the free switching of the monitoring modes of the working fiber core and the non-working fiber core, the vibration monitoring of the protection fiber core of the working fiber core and the self-healing automatic switching of the fault fiber core optical path;
each monitoring unit consists of an originating monitoring subunit and a receiving monitoring subunit, wherein the originating monitoring subunits share an originating light path switching module, and each originating monitoring subunit comprises a first wavelength division multiplexer and a first optical switch;
the receiving end monitoring subunits share a control processor, a data acquisition module, an optical power monitoring module, an optical detection module, a non-working fiber core monitoring module, a receiving end optical path switching module, an OTDR, a vibration alarm module, an optical alarm module, a sixth optical switch and a seventh optical switch; each receiving end monitoring subunit comprises an optical fiber vibration monitoring module, a second optical switch, a third optical switch, a fourth optical switch, a fifth optical switch, a second wavelength division multiplexer and an optical splitter;
the control processor is respectively connected with the data acquisition module, the optical power monitoring module, the non-working fiber core monitoring module, the optical detection module, the optical fiber vibration monitoring module, the receiving end optical path switching module, the optical alarm module and the vibration alarm module through electrical interfaces;
the control processor is connected with the originating light path switching module through an RJ45 network port to realize remote control of the originating light path switching module; the remote control is realized by connecting the remote control server with an application server and a data server;
the data acquisition module is connected with the optical power monitoring module, the optical fiber vibration monitoring module and the OTDR through the electric interfaces; the method comprises the steps of realizing acquisition of working fiber core optical power monitoring data, working fiber core protection fiber core vibration monitoring data and non-working fiber core monitoring data;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize monitoring of optical path fault alarm of the fiber core; the vibration alarm module is connected with the data acquisition module through an electric interface to realize the protection fiber core vibration fault alarm of the working fiber core;
the optical power monitoring module is connected with a seventh optical switch through an optical interface, and the seventh optical switch is connected with the optical splitter to realize optical power monitoring of the working fiber core;
the non-working fiber core monitoring module is connected with the OTDR through an electric interface to realize the monitoring of the non-working fiber core;
the optical fiber vibration monitoring module is connected with the fifth optical switch through an optical interface to realize vibration monitoring of a protection fiber core of the working fiber cores in the fiber core group;
the optical detection module is connected with the OTDR through an electrical interface, and realizes fault detection of the working fiber core through control of the OTDR;
the receiving end optical path switching module is connected with the second optical switch, the third optical switch, the fourth optical switch, the sixth optical switch and the seventh optical switch through the electric interfaces to realize monitoring mode switching selection;
the receiving end optical path switching module is connected with the fifth optical switch through an electric interface to realize the selection of a protection fiber core vibration monitoring mode of the working fiber core;
the receiving end optical path switching module is connected with the second optical switch and the fifth optical switch through the electric interface, so that the self-healing automatic switching of the fault working fiber core circuit to the protection circuit is realized;
the method realizes the free switching of the monitoring modes of the working fiber core and the non-working fiber core, the vibration monitoring of the protecting fiber core of the working fiber core and the self-healing automatic switching of the optical path of the fault fiber core;
the application server enables the receiving end optical path switching module to control the second optical switch to select an optical path f, the third optical switch to select an optical path g, the fourth optical switch to select an optical path i and the sixth optical switch to select an optical path a1 through the control processor, and enables the transmitting end optical path switching module to control the first optical switch to select an optical path a through the control processor, and the monitoring unit works in a non-working fiber core monitoring mode;
the non-working fiber core from the optical distribution frame is connected to the optical fiber monitoring system through an optical interface, and the fiber core is connected with a first wavelength division multiplexer; the control processor controls the non-working fiber core monitoring module to start the OTDR, the second wavelength division multiplexer multiplexes the OTDR monitoring light into the non-working fiber core, and the first wavelength division multiplexer demultiplexes the OTDR monitoring light to realize the monitoring of the non-working fiber core; the data acquisition module uploads the acquired OTDR monitoring data to the data server through the control processor; the optical alarm module performs fault identification processing on the OTDR monitoring data acquired by the data acquisition module to realize fault alarm; uploading the alarm information to a data server through a control processor; realizing remote monitoring of the state of the optical fiber line in a non-working fiber core monitoring mode;
the application server controls the receiving end optical path switching module to control the second optical switch to select an optical path f, the third optical switch to select an optical path h, the fourth optical switch to select an optical path j, the fifth optical switch to select an optical path c, the sixth optical switch to select an optical path a1, the seventh optical switch to select an optical path b1 through the control processor, and the transmitting end optical path switching module controls the first optical switch to select an optical path a through the control processor, and the optical fiber monitoring system monitoring unit works in a protected working fiber core monitoring mode;
the optical fiber monitoring system monitoring unit works in a working fiber core monitoring mode with protection, a working fiber core containing power system service data from an optical transceiver is accessed into the optical fiber monitoring system monitoring unit through an optical interface, and the working fiber core is connected with a first wavelength division multiplexer; dividing a working fiber core optical path into a communication optical path and a monitoring optical path through a beam splitter;
the control processor controls the optical power monitoring module to monitor a monitoring optical path of the working fiber core through a seventh optical switch and controls the data acquisition module to acquire optical power data; the optical fiber vibration monitoring module is used for monitoring the vibration of the protection fiber cores of the working fiber cores in the fiber core group through a fifth optical switch, and collecting optical fiber vibration data through the data collecting module; the data acquisition module uploads the acquired optical power data and vibration data to the data server through the control processor;
the optical alarm module performs fault identification processing on the optical power data acquired by the data acquisition module to realize fault alarm of the working optical fiber line; the alarm information is transmitted to a receiving end optical path switching module through a control processor, and an optical path e is selected through a second optical switch and an optical path d is selected through a fifth optical switch; the alarm information is transmitted to an originating light path switching module through a control processor by using an information interaction bus, and the originating light path switching module controls a first optical switch to select a light path a; the automatic self-healing switching of the fault light path of the working fiber core to the protection fiber core light path is realized; the alarm information is uploaded to a data server through a control processor;
the optical detection module starts the OTDR, the second wavelength division multiplexer multiplexes the OTDR detection light into the working fiber core to perform fault detection of the working fiber core, and the first wavelength division multiplexer demultiplexes the OTDR detection light to realize remote monitoring of the state of the working fiber core in a working fiber core monitoring mode;
the vibration alarm module performs fault identification processing on the vibration data acquired by the data acquisition module to realize fault alarm of a protection fiber core of working fiber cores in the fiber core group; and the alarm information is uploaded to the data server through the control processor, so that the state of the protection fiber core for the working fiber core is remotely monitored in the working fiber core monitoring mode, and the reliability of the protection fiber core is improved.
The invention has the beneficial effects that: the optical fiber monitoring system provides optical fiber line monitoring equipment which has two monitoring modes, namely working fiber core monitoring and non-working fiber core monitoring with protection and can self-heal working fiber core faults for optical fiber communication of a power system, realizes the remote free automatic switching of a monitoring equipment detection unit between the two monitoring modes, realizes the automatic self-healing switching of a fault line and the automatic detection of the optical fiber core faults under the condition that the working fiber line faults occur, and performs vibration monitoring on the protection fiber core of the working fiber core, thereby improving the reliability of the protection line, improving the sharing degree of elements in the equipment on the basis of ensuring the functions, reducing the equipment cost, overcoming the defects that the existing equipment monitoring mode is single, the detection needs manual field work, solving the problems of communication interruption and the like caused by untimely recovery of the fault line, ensuring the normal operation of the communication of the power fiber line and meeting the requirements of various monitoring in the field.
Drawings
FIG. 1 is a schematic diagram of a dual-mode optical fiber monitoring system with a protected optical path and capable of self-healing faults according to the present invention.
FIG. 2 is a schematic diagram of the relationship between the modules in the dual-mode optical fiber monitoring system with a protected optical path and a self-healing fault according to the present invention.
Detailed Description
The first embodiment is described with reference to fig. 1 and fig. 2, and the dual-mode optical fiber monitoring system with a protection optical path and capable of self-healing faults includes at least one monitoring unit, where each monitoring unit includes a transmitting end monitoring subunit and a receiving end monitoring subunit, the transmitting end monitoring subunit includes a first optical switch and a first wavelength division multiplexer, the receiving end monitoring subunit includes an optical fiber vibration monitoring module, a second optical switch, a third optical switch, a fourth optical switch, a fifth optical switch, a second wavelength division multiplexer and an optical splitter, and each unit shares a control processor, a data acquisition module, an optical power monitoring module, a non-working fiber core monitoring module, an optical detection module, a transmitting end optical path switching module, a receiving end optical path switching module, an optical alarm module, a vibration alarm module, a sixth optical switch, a seventh optical switch and an OTDR. Wherein:
the control processor is respectively connected with the data acquisition module, the optical power monitoring module, the non-working fiber core monitoring module, the optical fiber vibration monitoring module, the optical detection module, the receiving end optical path switching module, the optical alarm module and the vibration alarm module through the electric interfaces, is connected with the transmitting end optical path switching module through the information interaction bus, jointly realizes the control of each sub-module, and then is connected with the application server and the data server through the RJ45 network port to realize remote control; the data acquisition module is connected with the non-working fiber core monitoring module, the optical power monitoring module and the OTDR through the electric interface to acquire non-working fiber core monitoring data, optical power data and non-working fiber core monitoring data; the optical power monitoring module is connected with the seventh optical switch through an optical interface and realizes the optical power monitoring of the working fiber core through a connecting beam splitter; the non-working fiber core monitoring module is connected with the OTDR through an electrical interface and realizes monitoring of the non-working fiber core through a sixth optical switch; the optical fiber vibration monitoring module is connected with the fifth optical switch through an optical interface to realize vibration monitoring of a protection fiber core of the working fiber cores in the fiber core group; the optical detection module is connected with the OTDR through an electrical interface, and realizes fault detection of the working fiber core through control of the OTDR;
the receiving end optical path switching module is connected with the second optical switch, the third optical switch, the fourth optical switch, the sixth optical switch and the seventh optical switch through the electric interfaces, so that switching selection of equipment monitoring modes is realized; the receiving end optical path switching module is connected with the fifth optical switch through an electric interface to realize the selection of a protection fiber core vibration monitoring mode of the working fiber core;
the receiving end optical path switching module is connected with the second optical switch and the fifth optical switch through the electric interface, so that the self-healing automatic switching of the working fiber core fault line to the protection fiber core line is realized;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize fault alarm of the monitoring optical path; the vibration alarm module is connected with the data acquisition module through an electric interface to realize the protection fiber core vibration fault alarm of the working fiber core;
the dual-mode optical fiber monitoring system with the protection optical path and the fault self-healing function according to the embodiment can refer to the free switching between two monitoring modes, namely the working fiber core monitoring with protection and the vibration monitoring of the protection fiber core and the non-working fiber core monitoring. When the communication traffic of the power system is increased and the idle non-working fiber core is required to be changed into the working fiber core, the monitoring system can remotely complete the switching of the corresponding unit of the monitoring equipment from the non-working fiber core monitoring mode to the working fiber monitoring mode; the system can remotely switch from the protected active core monitoring mode to the inactive core monitoring mode while ensuring communication accuracy of the active cores for improved monitoring independence.
The first wavelength division multiplexer described in this embodiment is a demultiplexer. The first optical switch is a1×2 optical switch, and the second optical switch is a1×2 optical switch. The second wavelength division multiplexer is a combiner, the third optical switch is a1×2 optical switch, and the optical splitter is a1×2 optical splitter. The fourth optical switch is a1×2 optical switch. The fifth optical switch is a1×2 optical switch. The sixth optical switch is a1×n optical switch. The seventh optical switch is a1×n optical switch.
The control processor adopts a singlechip with the model of STM32F205, the data acquisition module adopts a chip with the model of LTC2348-18, the optical fiber vibration monitoring module adopts an optical fiber vibration detector with an RJ45 interface, the optical detection module adopts a singlechip with the model of STM8S105 series, the non-working fiber core monitoring module adopts a singlechip with the model of STM8S105 series, the optical power monitoring module is an RS232 interface optical power meter, the receiving end optical path switching module adopts a singlechip with the model of STM8S103 series, the optical alarm module adopts a singlechip with any model and an MDZ12 series chip to form together, and the vibration alarm module adopts a singlechip with any model and an MDZ12 series chip to form together. The transmitting end light path switching module adopts a singlechip with the model of STM8S103 series.
In a second embodiment, a dual-mode optical fiber monitoring method with a protection optical path and capable of self-healing faults according to the first embodiment is described with reference to fig. 1 and 2, in which, in fig. 1, a black thick connection line represents a fiber core and an optical path, and a black thin connection line represents a data connection line. The system equipment is divided into n monitoring units, wherein the monitoring unit i comprises an originating monitoring subunit i_1 and a receiving monitoring subunit i_2, i is greater than or equal to 1 and less than or equal to n, the originating monitoring subunit comprises a first wavelength division multiplexer and a first optical switch, and the originating monitoring subunit 1_1 and the subunit 2_1 … share an originating light path switching module; the receiving end monitoring subunit comprises an optical fiber vibration monitoring module, a second optical switch, a second wavelength division multiplexer, a third optical switch, an optical splitter, a fourth optical switch and a fifth optical switch, wherein the receiving end monitoring subunit 1_2, the subunit 2_ … subunit n_2 share a control processor, a data acquisition module, an optical power monitoring module, an inactive fiber core monitoring module, an optical detection module, a receiving end optical path switching module, an optical alarm module, a vibration alarm module, a sixth optical switch, a seventh optical switch and an OTDR, and each monitoring unit can realize two working mode monitoring of one optical fiber core and a working fiber core fault optical path self-healing switching function.
The application server controls the light path switching module at the transmitting end through the control processor to enable the first optical switch to select the fiber core group monitoring fiber core light path b, and controls the light path switching module at the receiving end through the control processor to enable the second optical switch to select the fiber core group monitoring fiber core light path f, the third optical switch to select the light path g, the fourth optical switch to select the light path i, the fifth optical switch to select the light path b, the sixth optical switch to select the light path a1 and the seventh optical switch to select the light path b1, and at the moment, the monitoring unit 1 of the monitoring equipment is in the working mode 1; the application server controls the light path switching module at the transmitting end through the control processor to enable the first optical switch to select the fiber core group to monitor the fiber core light path a, and controls the light path switching module at the receiving end through the control processor to enable the second optical switch to select the fiber core group to monitor the fiber core light path c, the third optical switch to select the light path h, the fourth optical switch to select the light path j and the sixth optical switch to select the light path a1, so that the monitoring unit 1 of the monitoring equipment is in the working mode 2. According to the optical fiber communication monitoring requirement of the power system, different monitoring modes of the equipment can be independently selected by different monitoring units, and two monitoring working modes of each monitoring unit can be mutually switched, so that the optical fiber line monitoring of the remote free switching working modes is realized.
When the monitoring unit 1 of the monitoring device is in the working mode 2, the application server controls the transmitting end optical path switching module through the control processor to enable the first optical switch to select the core group protection core optical path b, and controls the receiving end optical path switching module through the control processor to enable the second optical switch to select the core group protection core optical path f and the fifth optical switch to select the optical path d, at the moment, the monitoring unit 1 of the monitoring device achieves self-healing switching of a working core fault optical path, continuous communication of an optical fiber circuit is achieved, and communication reliability and usability of the optical fiber circuit are improved.
The working mode 1 is a non-working fiber core monitoring mode, and the working mode monitoring principle is as follows: in fig. 1, a non-working fiber core from an optical distribution frame is connected to a monitoring unit 1 of the device through an optical interface and is connected with a first wavelength division multiplexer; multiplexing the OTDR monitoring light into the fiber-free core by the second wavelength division multiplexer for monitoring, and demultiplexing the OTDR monitoring light by the first wavelength division multiplexer; the control processor controls the non-working fiber core monitoring module to start the OTDR to monitor the non-working fiber cores, and controls the data acquisition module to acquire OTDR monitoring data; the data acquisition module uploads the acquired OTDR monitoring data to the data server through the control processor; the optical alarm module performs fault identification and alarm processing on the OTDR monitoring data acquired by the data acquisition module to realize the fault alarm of the non-working fiber core; the optical alarm module uploads alarm information to the data server through the control processor, so that the monitoring equipment monitoring unit 1 can remotely monitor the optical fiber line of the power system in the working mode 1.
The working mode 2 is a working fiber core monitoring mode with protection, and the working mode monitoring principle is as follows: in fig. 1, a working fiber core containing service data from an optical transceiver is connected to a monitoring unit 1 of the device through an optical interface and is connected to a first wavelength division multiplexer; dividing a working fiber core optical path into a communication optical path and a monitoring optical path through a beam splitter; the control processor controls the optical power monitoring module to monitor a monitoring optical path of the working fiber core through a seventh optical switch and controls the data acquisition module to acquire optical power data; the optical fiber vibration monitoring module is used for monitoring the vibration of the protection fiber cores of the working fiber cores in the fiber core group through a fifth optical switch, and collecting optical fiber vibration data through the data collecting module; the data acquisition module uploads the acquired optical power data and vibration data to the data server through the control processor;
the optical alarm module performs fault identification processing on the optical power data acquired by the data acquisition module to realize fault alarm of the working optical fiber line; uploading the optical alarm information to an application server and a data server through a control processor; the control processor controls the second optical switch to select an optical path e and the fifth optical switch to select an optical path d through the receiving end optical path switching module; the control processor realizes that the first optical switch selects the optical path a through the light-emitting end optical path switching module; the fault light path of the working fiber core is automatically switched to the protection fiber core; the optical detection module starts the OTDR, the second wavelength division multiplexer multiplexes the OTDR detection light into the working fiber core to perform fault detection of the working fiber core, and the first wavelength division multiplexer demultiplexes the OTDR detection light, so that the working of the optical transmitter-receiver is not affected; and the fault detection result data is uploaded to a data server through a control processor, so that the monitoring unit 1 can remotely monitor the state of the optical fiber line of the power system in the working mode 2.
The control processor controls the transmitting-end light path switching module through the information interaction bus, and the transmitting-end light path switching module can be directly controlled by an application server through the information interaction bus.
Claims (3)
1. The dual-mode optical fiber monitoring system with the protection optical path and the fault self-healing function comprises at least one monitoring unit, wherein each monitoring unit monitors one optical fiber line to realize the free switching of the monitoring modes of the working fiber core and the non-working fiber core, the vibration monitoring of the protection fiber core of the working fiber core and the self-healing automatic switching of the fault fiber core optical path; the method is characterized in that;
each monitoring unit consists of an originating monitoring subunit and a receiving monitoring subunit, wherein the originating monitoring subunits share an originating light path switching module, and each originating monitoring subunit comprises a first wavelength division multiplexer and a first optical switch;
the receiving end monitoring subunits share a control processor, a data acquisition module, an optical power monitoring module, an optical detection module, a non-working fiber core monitoring module, a receiving end optical path switching module, an OTDR, a vibration alarm module, an optical alarm module, a sixth optical switch and a seventh optical switch; each receiving end monitoring subunit comprises an optical fiber vibration monitoring module, a second optical switch, a third optical switch, a fourth optical switch, a fifth optical switch, a second wavelength division multiplexer and an optical splitter;
the control processor is respectively connected with the data acquisition module, the optical power monitoring module, the non-working fiber core monitoring module, the optical detection module, the optical fiber vibration monitoring module, the receiving end optical path switching module, the optical alarm module and the vibration alarm module through electrical interfaces;
the control processor is connected with the originating light path switching module through an RJ45 network port to realize remote control of the originating light path switching module; the remote control is realized by connecting the remote control server with an application server and a data server;
the data acquisition module is connected with the optical power monitoring module, the optical fiber vibration monitoring module and the OTDR through the electric interfaces; the method comprises the steps of realizing acquisition of working fiber core optical power monitoring data, working fiber core protection fiber core vibration monitoring data and non-working fiber core monitoring data;
the optical alarm module is connected with the data acquisition module through an electrical interface to realize monitoring of optical path fault alarm of the fiber core; the vibration alarm module is connected with the data acquisition module through an electric interface to realize the protection fiber core vibration fault alarm of the working fiber core;
the optical power monitoring module is connected with a seventh optical switch through an optical interface, and the seventh optical switch is connected with the optical splitter to realize optical power monitoring of the working fiber core;
the non-working fiber core monitoring module is connected with the OTDR through an electric interface to realize the monitoring of the non-working fiber core;
the optical fiber vibration monitoring module is connected with the fifth optical switch through an optical interface to realize vibration monitoring of a protection fiber core of the working fiber cores in the fiber core group;
the optical detection module is connected with the OTDR through an electrical interface, and realizes fault detection of the working fiber core through control of the OTDR;
the receiving end optical path switching module is connected with the second optical switch, the third optical switch, the fourth optical switch, the sixth optical switch and the seventh optical switch through the electric interfaces to realize monitoring mode switching selection;
the receiving end optical path switching module is connected with the fifth optical switch through an electric interface to realize the selection of a protection fiber core vibration monitoring mode of the working fiber core;
the receiving end optical path switching module is connected with the second optical switch and the fifth optical switch through the electric interface, so that the self-healing automatic switching of the fault working fiber core circuit to the protection circuit is realized;
the method for realizing monitoring by adopting the optical fiber monitoring system comprises the following steps:
the method realizes the free switching of the on-line monitoring mode and the non-working fiber core monitoring mode of the working fiber core, the vibration monitoring of the protection fiber core of the working fiber core and the self-healing automatic switching of the optical path of the fault fiber core; the specific implementation process is as follows:
the application server enables the receiving end optical path switching module to control the second optical switch to select an optical path e, the third optical switch to select an optical path g, the fourth optical switch to select an optical path i and the sixth optical switch to select an optical path a1 through the control processor, and enables the transmitting end optical path switching module to control the first optical switch to select an optical path a through the control processor, and the monitoring unit works in a non-working fiber core monitoring mode;
the non-working fiber core from the optical distribution frame is connected to the optical fiber monitoring system through an optical interface, and the fiber core is connected with a first wavelength division multiplexer; the control processor controls the non-working fiber core monitoring module to start the OTDR, the second wavelength division multiplexer multiplexes the OTDR monitoring light into the non-working fiber core, and the first wavelength division multiplexer demultiplexes the OTDR monitoring light to realize the monitoring of the non-working fiber core; the data acquisition module uploads the acquired OTDR monitoring data to the data server through the control processor; the optical alarm module performs fault identification processing on the OTDR monitoring data acquired by the data acquisition module to realize fault alarm; uploading the alarm information to a data server through a control processor; realizing remote monitoring of the state of the optical fiber line in a non-working fiber core monitoring mode;
the application server controls the receiving end optical path switching module to control the second optical switch to select an optical path f, the third optical switch to select an optical path h, the fourth optical switch to select an optical path j, the fifth optical switch to select an optical path c, the sixth optical switch to select an optical path a1, the seventh optical switch to select an optical path b1 through the control processor, and the transmitting end optical path switching module controls the first optical switch to select an optical path a through the control processor, and the optical fiber monitoring system monitoring unit works in a protected working fiber core monitoring mode;
the optical fiber monitoring system monitoring unit works in a working fiber core monitoring mode with protection, a working fiber core containing power system service data from an optical transceiver is accessed into the optical fiber monitoring system monitoring unit through an optical interface, and the working fiber core is connected with a first wavelength division multiplexer; dividing a working fiber core optical path into a communication optical path and a monitoring optical path through a beam splitter;
the control processor controls the optical power monitoring module to monitor a monitoring optical path of the working fiber core through a seventh optical switch and controls the data acquisition module to acquire optical power data; the optical fiber vibration monitoring module is used for monitoring the vibration of the protection fiber cores of the working fiber cores in the fiber core group through a fifth optical switch, and collecting optical fiber vibration data through the data collecting module; the data acquisition module uploads the acquired optical power data and vibration data to the data server through the control processor;
the optical alarm module performs fault identification processing on the optical power data acquired by the data acquisition module to realize fault alarm of the working optical fiber line; the alarm information is transmitted to a receiving end optical path switching module through a control processor, and an optical path e is selected through a second optical switch and an optical path d is selected through a fifth optical switch; the alarm information is transmitted to an originating light path switching module through a control processor by using an information interaction bus, and the originating light path switching module controls a first optical switch to select a light path a; the automatic self-healing switching of the fault light path of the working fiber core to the protection fiber core light path is realized; the alarm information is uploaded to a data server through a control processor;
the optical detection module starts the OTDR, the second wavelength division multiplexer multiplexes the OTDR detection light into the working fiber core to perform fault detection of the working fiber core, and the first wavelength division multiplexer demultiplexes the OTDR detection light to realize remote monitoring of the state of the working fiber core in a working fiber core monitoring mode;
the vibration alarm module performs fault identification processing on the vibration data acquired by the data acquisition module to realize fault alarm of a protection fiber core of working fiber cores in the fiber core group; and the alarm information is uploaded to the data server through the control processor, so that the state of the protection fiber core for the working fiber core is remotely monitored in the working fiber core monitoring mode, and the reliability of the protection fiber core is improved.
2. The dual mode fiber optic monitoring system with protected optical path and self-healing fault of claim 1, wherein; the optical alarm module performs fault identification processing on the optical power data acquired by the data acquisition module to realize fault alarm of the working optical fiber line;
uploading the alarm information to an application server and a data server through a control processor; the application server controls the light path switching module at the transmitting end through the controller to enable the first optical switch to select the light path b, and controls the light path switching module at the receiving end through the control processor to enable the second optical switch to select the light path f and the fifth optical switch to select the light path d, so that automatic self-healing switching of the fault light path of the working fiber core is realized.
3. The dual mode fiber optic monitoring system with protected optical path and self-healing fault of claim 1, wherein;
the control processor controls the transmitting-end light path switching module through the information interaction bus, and the transmitting-end light path switching module can be directly controlled by an application server through the information interaction bus.
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