CN109347548B - Optical path integration test platform - Google Patents
Optical path integration test platform Download PDFInfo
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- CN109347548B CN109347548B CN201711118447.9A CN201711118447A CN109347548B CN 109347548 B CN109347548 B CN 109347548B CN 201711118447 A CN201711118447 A CN 201711118447A CN 109347548 B CN109347548 B CN 109347548B
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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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- 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
- H04B10/07—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
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional 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
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Abstract
The invention discloses an optical path integration test platform and an optical channel integration test method based on the same, and belongs to the technical field of optical fiber interface test of a comprehensive processing platform. The method comprises three functions of FC simulation card communication test, optical channel physical layer signal quality test and test circuit self-detection function. FC emulation card communication test: the communication test of all optical channels is realized through an FC simulation card; optical channel physical layer signal quality test: the optical power test of all the optical channel transmitting ports and the optical sensitivity test of the receiving ports are realized; the self-detection function of the test circuit is as follows: the method has certain initial self-diagnosis capability of the FC simulation card and the optical attenuator. The invention is based on the intelligent control platform of the optical switch, carries out comprehensive and necessary tests on the interface from the signal quality of the optical path and the practical application of the optical path, and solves a series of problems of simple integrated test content, single test method, complex test process operation and the like of a large-scale optical channel of a comprehensive processing platform.
Description
Technical Field
The invention discloses an optical path integration test platform and an optical channel integration test method based on the same, and belongs to the technical field of optical fiber interface test of a comprehensive processing platform.
Background
The integrated avionics system core processing platform adopts a star topology network based on exchange, all functional modules and avionics equipment realize internal interconnection and external communication through optical fiber channels, and the optical fiber channels are not only the most main channels for transmitting protocol data of each internal module, but also the main channels for processing the communication between the platform and the avionics equipment; test verification of the optical channel is therefore essential. Because the comprehensive treatment platform has high degree of integration, the number of optical channels of the comprehensive treatment platform is up to 40, and the current domestic common test means comprises: 1) connecting all the optical channels with the simulation card one by adopting a manual traversal method, and carrying out communication test; 2) and connecting the transmitting ports of all the optical channels with an optical power meter one by adopting a manual traversal method, and carrying out optical power test. The test process is complex in operation and low in test efficiency, so that a comprehensive test method for the integrated processing platform optical channel integration is designed, the communication function test of all optical channels is realized based on a flexible and changeable full-automatic optical switching network, the optical signal quality in each optical channel is enhanced and tested, namely the optical power of a transmitting optical path and the sensitivity of a receiving optical path are tested, and an optimal solution is provided for the integrated test verification of the optical channels.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve a series of problems of simple content of integrated test, single test method, complex operation of test process and the like of a large-scale optical channel of an integrated processing platform, the invention carries out comprehensive and necessary test on an interface from the signal quality of an optical path and the practical application of the optical path based on an optical switch intelligent control platform.
The technical scheme of the invention is as follows:
an optical circuit integrated test platform, the platform comprises an optical switch network, an optical power meter, an optical attenuator, an FC simulation card and a computer system:
optical switch network: the optical power meter, the optical attenuator and the FC simulation card can be remotely controlled to provide an optical path, and the communication function of measuring all optical channels is supported;
an optical power meter: the optical switch is connected with the optical switch network and used for measuring the light intensity of the measured optical channel;
an optical attenuator: the optical attenuator provides various optical signals with different set powers for the tested optical channel, and then the optical path integrated test platform tests the change of the tested optical channel along with the optical signals with different set powers through the FC simulation card to determine the sensitivity of the tested optical channel;
FC emulation card: the method is used for simulation, test, data acquisition and analysis of an FC system environment;
a computer system: respectively connected with the optical switch network, the optical power meter, the optical attenuator and the FC simulation card and controlling the same;
FC emulation card communication test: the communication test of all optical channels is realized through an FC simulation card;
optical channel physical layer signal quality test: the optical power test of all the optical channel transmitting ports and the optical sensitivity test of the receiving ports are realized;
the self-detection function of the test circuit is as follows: the method has certain initial self-diagnosis capability of the FC simulation card and the optical attenuator.
The FC emulation card communication test comprises the following steps:
1) selecting an FC simulation card communication test in a main test program;
2) initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
3) the physical link is established by the tested optical channel: switching an optical switch according to the current configuration, and establishing the physical connection between the jth tested optical channel and the FC simulation card through the optical switch;
4) communication initialization: initializing a jth tested optical channel and an FC simulation card, and enabling the jth tested optical channel to enter a communication state;
5) and (3) communication testing: the jth tested optical channel and the FC simulation card are transmitted according to a pre-configured data packet format to realize FC communication test of the tested optical channel;
6) judging whether the communication tests of all the optical channels are finished, if the tests are not finished, making j equal to j +1, namely configuring a j + 1-th tested optical channel, and then jumping to the step 3 to carry out the communication test of the j + 1-th optical channel; if the test is finished, ending the FC simulation card communication test and entering a main test program;
the optical channel physical layer signal quality test adopts the following steps:
1) selecting an optical channel physical layer signal quality test in a main test program;
2) selecting test contents: selecting the content of a physical layer to be tested currently, and entering step 3 if selecting the optical power test of an optical channel transmitting end; if the optical channel receiving end optical sensitivity test is selected, entering the step 4;
3) the optical power test flow of the optical channel transmitting end is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
the physical link is established for the tested optical channel: switching the optical switches according to the configuration of the current jth optical switch; establishing physical connection between a transmitting end of a jth tested optical channel and an optical power meter through an optical switch;
measuring the light intensity of a jth path of sending port by using an optical power meter, and recording the light intensity;
judging whether optical power tests of all optical channel transmitting ends are finished, if the tests are not finished, enabling j to be j +1, namely configuring a j + 1-th path of tested optical channels, and then jumping to the step ii to carry out communication tests of the j + 1-th path of optical channels; if the test is finished, the optical power test of the optical channel sending end is finished, and a main test program is entered.
4) The optical channel receiving end optical sensitivity test flow is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
establishing an input excitation signal physical connection: selecting an input excitation signal, and realizing the physical connection between a transmitting end of the input excitation signal and the optical attenuator by switching the optical switch; an FC emulation card or other external optical path can be used as an input excitation signal;
the physical link is established by the tested optical channel: switching an optical switch according to the current configuration, establishing physical connection between a jth tested optical channel receiving end and an optical attenuator through the optical switch, and forming a physical link among an input excitation signal, the optical attenuator and the tested optical channel receiving end;
initializing a communication link: setting the optical attenuator to be in an inoperative state, and establishing a communication link between an input excitation signal and a measured optical channel;
v. adjusting the light attenuation parameter: measuring the optical power of the current input excitation signal through an optical power meter, enabling the tested optical channel to be in a critical state of frame loss and normal communication, and recording the light intensity of the input excitation signal sent to the tested optical channel by the current optical attenuator;
vi, judging whether the optical sensitivity test of all the optical channel receiving ends is finished, if the test is not finished, making j equal to j +1, namely configuring a j + 1-th path of tested optical channel, and then jumping to step iii to perform the communication test of the j + 1-th path of optical channel; if the test is finished, the optical channel receiving end optical sensitivity test is finished, and a main test program is entered.
The self-detection of the test circuit takes the following steps:
1) selecting a test circuit for self-detection in a main test program;
2) selecting test contents: selecting FC emulation card sending end optical power self-detection, then entering step 3; selecting one optical attenuator or two-to-one comparison self-detection of the optical attenuator, and entering the step 4;
3) the optical power self-detection flow of the FC emulation card sending end is as follows:
i. the physical connection from the sending end of the FC simulation card to the first optical attenuator and the optical power meter is realized through the switching of the optical switch;
measuring the light intensity of the transmitting end of the simulation card, and comparing, analyzing and recording the light intensity with a standard value;
4) the self-detection flow of the optical attenuator is as follows:
i. the physical connection from the sending end of the FC simulation card to the first optical attenuator and the optical power meter is realized through the switching of the optical switch;
adjusting the attenuation parameter of the first optical attenuator, measuring the optical power of the current input excitation through an optical power meter and recording;
iii, realizing physical connection from a sending end of the FC simulation card to the second optical attenuator and the optical power meter by switching the optical switch;
iv, adjusting the attenuation parameters of the second optical attenuator, keeping the attenuation parameters consistent with the attenuation parameters of the first optical attenuator in the step ii, measuring the optical power of the current input excitation through an optical power meter and recording the optical power;
and v, comparing the two measurement results measured by the optical power meter, and comparing and analyzing the two measurement results with the attenuation parameters of the optical attenuator to realize the self-detection of the first optical attenuator and the second optical attenuator.
The invention has the advantages that: the core technology of the comprehensive test for the integrated optical channel of the comprehensive processing platform mainly solves the difficult problem of the large-scale integrated optical channel test by constructing a flexible and changeable full-automatic optical switching network and combining a test method of practical application, and has the following advantages:
a) the test content is comprehensive, the test method is flexible and changeable, and comprehensive and necessary optical channel comprehensive test is realized: the method comprises the steps of testing a communication function, testing the optical power of a transmitting optical path and testing the sensitivity of a receiving optical path;
b) the complexity of optical channel test operation is reduced by adopting an intelligent optical switch switching network, and the test efficiency of an optical channel is greatly improved;
c) the circuit self-detection capability has certain self-diagnosis capability of a test environment, and the health and reliability of the test environment are ensured;
d) all optical channels can be subjected to automatic closed-loop test, so that loss caused by interconnection change of the optical channels is effectively controlled;
e) the functional circuit has high reuse rate, flexible use, strong testing capability, high reliability and low cost;
drawings
FIG. 1 is a block diagram of a test function;
FIG. 3 is a schematic view of a test flow;
fig. 2 is a block diagram of hardware functional circuit interconnection.
Detailed Description
An optical path integration test platform, the platform comprises an optical switch network, an optical power meter, an optical attenuator, an FC simulation card and a computer system:
optical switch network: the optical power meter, the optical attenuator and the FC simulation card can be remotely controlled to provide an optical path, and the communication function of measuring all optical channels is supported;
an optical power meter: the optical switch is connected with the optical switch network and used for measuring the light intensity of the measured optical channel;
an optical attenuator: the optical attenuator provides various optical signals with different set powers for the tested optical channel, and then the optical path integrated test platform tests the change of the tested optical channel along with the optical signals with different set powers through the FC simulation card to determine the sensitivity of the tested optical channel;
FC emulation card: the method is used for simulation, test, data acquisition and analysis of an FC system environment;
a computer system: respectively connected with the optical switch network, the optical power meter, the optical attenuator and the FC simulation card and controlling the same;
FC emulation card communication test: the communication test of all optical channels is realized through an FC simulation card;
optical channel physical layer signal quality test: the optical power test of all the optical channel transmitting ports and the optical sensitivity test of the receiving ports are realized;
the self-detection function of the test circuit is as follows: the method has certain initial self-diagnosis capability of the FC simulation card and the optical attenuator.
The FC emulation card communication test comprises the following steps:
1) selecting an FC simulation card communication test in a main test program;
2) initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
3) the physical link is established by the tested optical channel: switching an optical switch according to the current configuration, and establishing the physical connection between the jth tested optical channel and the FC simulation card through the optical switch;
4) communication initialization: initializing a jth tested optical channel and an FC simulation card, and enabling the jth tested optical channel to enter a communication state;
5) and (3) communication testing: the jth tested optical channel and the FC simulation card are transmitted according to a pre-configured data packet format to realize FC communication test of the tested optical channel;
6) judging whether the communication tests of all the optical channels are finished, if the tests are not finished, making j equal to j +1, namely configuring a j + 1-th tested optical channel, and then jumping to the step 3 to carry out the communication test of the j + 1-th optical channel; if the test is finished, ending the FC simulation card communication test and entering a main test program;
the optical channel physical layer signal quality test adopts the following steps:
1) selecting an optical channel physical layer signal quality test in a main test program;
2) selecting test contents: selecting the content of a physical layer to be tested currently, and entering step 3 if selecting the optical power test of an optical channel transmitting end; if the optical channel receiving end optical sensitivity test is selected, entering the step 4;
3) the optical power test flow of the optical channel transmitting end is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
the physical link is established for the tested optical channel: switching the optical switches according to the configuration of the current jth optical switch; establishing physical connection between a transmitting end of a jth tested optical channel and an optical power meter through an optical switch;
measuring the light intensity of a jth path of sending port by using an optical power meter, and recording the light intensity;
judging whether optical power tests of all optical channel transmitting ends are finished, if the tests are not finished, enabling j to be j +1, namely configuring a j + 1-th path of tested optical channels, and then jumping to the step ii to carry out communication tests of the j + 1-th path of optical channels; if the test is finished, the optical power test of the optical channel sending end is finished, and a main test program is entered.
4) The optical channel receiving end optical sensitivity test flow is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
establishing an input excitation signal physical connection: selecting an input excitation signal, and realizing the physical connection between a transmitting end of the input excitation signal and the optical attenuator by switching the optical switch; an FC emulation card or other external optical path can be used as an input excitation signal;
the physical link is established for the tested optical channel: switching an optical switch according to the current configuration, establishing physical connection between a jth tested optical channel receiving end and an optical attenuator through the optical switch, and forming a physical link among an input excitation signal, the optical attenuator and the tested optical channel receiving end;
initializing a communication link: setting the optical attenuator to be in an inoperative state, and establishing a communication link between an input excitation signal and a measured optical channel;
v. adjusting the light attenuation parameter: measuring the optical power of the current input excitation signal through an optical power meter, enabling the tested optical channel to be in a critical state of frame loss and normal communication, and recording the light intensity of the input excitation signal sent to the tested optical channel by the current optical attenuator;
vi, judging whether the optical sensitivity test of all the optical channel receiving ends is finished, if the test is not finished, making j equal to j +1, namely configuring a j + 1-th path of tested optical channel, and then jumping to step iii to perform the communication test of the j + 1-th path of optical channel; if the test is finished, the optical channel receiving end optical sensitivity test is finished, and a main test program is entered.
The self-detection of the test circuit takes the following steps:
1) selecting a test circuit for self-detection in a main test program;
2) selecting test contents: selecting FC emulation card sending end optical power self-detection, then entering step 3; selecting one optical attenuator or two-to-one comparison self-detection of the optical attenuator, and entering the step 4;
3) the optical power self-detection flow of the FC emulation card sending end is as follows:
i. the physical connection from the sending end of the FC simulation card to the first optical attenuator and the optical power meter is realized through the switching of the optical switch;
measuring the light intensity of the transmitting end of the simulation card, and comparing, analyzing and recording the light intensity with a standard value;
4) the self-detection flow of the optical attenuator is as follows:
i. the physical connection from the sending end of the FC simulation card to the first optical attenuator and the optical power meter is realized through the switching of the optical switch;
adjusting the attenuation parameter of the first optical attenuator, measuring the optical power of the current input excitation through an optical power meter and recording;
iii, realizing physical connection from a sending end of the FC simulation card to the second optical attenuator and the optical power meter by switching the optical switch;
iv, adjusting the attenuation parameters of the second optical attenuator, keeping the attenuation parameters consistent with the attenuation parameters of the first optical attenuator in the step ii, measuring the optical power of the current input excitation through an optical power meter and recording the optical power;
v, comparing the two measurement results measured by the optical power meter, and comparing and analyzing the two measurement results with the attenuation parameters of the optical attenuator to realize the self-detection of the first optical attenuator and the second optical attenuator.
The present invention will be described in further detail with reference to the accompanying drawings.
The optical path integrated test platform mainly comprises an optical switch network, an optical power meter, an optical attenuator and an FC simulation card, and is shown as a hardware functional circuit interconnection block diagram in FIG. 2. The specific functions are as follows:
a) the optical switch network provides a basic path for communication or test from all optical channels to the optical power meter, the optical attenuator and the FC simulation card, and realizes flexible and changeable seamless switching through remote control.
b) The optical power meter provides an industry leading solution for device connectivity, high-speed measurement data acquisition and rapid data transmission of post-processing. By combining with an optical switch network, a fast measurement solution is provided.
c) The optical attenuator is used for flexibly controlling the power of the optical signal in the testing device. By monitoring the output power, accurate and stable power settings can be achieved at any input power. The sensitivity of the optical channel path is determined by measuring the variation of BER with the input signal power by combining with the optical switch network, the optical power and.
d) And the FC simulation card is used for simulation, test, data acquisition and analysis of an FC system environment.
The main functions of the optical channel integration test implementation include: the test flow of three parts, FC emulation card communication test, optical channel physical layer signal quality test and test circuit self-detection, is shown in fig. 3, and the following will describe the three main functional modules.
b) As shown in the "FC emulation card communication test" block on the left side of fig. 3, the operation flow of the FC emulation card communication test is specifically tested according to the following flow after the test mode is selected:
1) initializing the optical switch: i.e. the starting channel number of the configured measured optical channel, such as j ═ 1;
2) the physical link is established by the tested optical channel: switching an optical switch according to the current configuration, and establishing the physical connection between a measured optical channel (jth path) and an FC simulation card through the optical switch;
3) communication initialization: initializing a tested optical channel (i.e. the jth path) and enabling an FC simulation card to enter a communication state;
4) and (3) communication testing: the tested optical channel (i.e. the jth path) and the FC simulation card are transmitted according to a data packet format approved by a user to realize communication test;
5) judging whether the communication test of all optical channels is finished, if not, configuring the next optical channel as a channel to be tested (i.e. j is j +1), and then jumping to the 2 nd step to perform the communication test of the next optical channel; if the communication test is finished, the communication test flow is ended;
c) as shown in the "optical channel physical layer signal quality test" block in the middle of fig. 3, when the test mode is selected, the optical channel physical layer signal quality test process performs a specific test according to the following process:
1) selecting test contents: firstly, testing the optical power of an optical channel sending end by automatically configuring or manually selecting the content of a physical layer to be tested at present, and entering the step 2; secondly, testing the optical sensitivity of the optical channel receiving end, and entering the step 3;
2) the optical power test flow of the optical channel transmitting end is as follows:
i. initializing the optical switch: i.e. the starting channel number of the configured measured optical channel, such as j ═ 1;
the physical link is established for the tested optical channel: switching an optical switch according to the current configuration, and establishing physical connection between a transmitting end of a measured optical channel (jth path) and an optical power meter through the optical switch;
measuring and recording the light intensity of the current sending port;
judging whether the communication test of all the optical channels is finished, if not, configuring the next optical channel as a channel to be tested (namely j is j +1), and then jumping to the jj step to carry out the communication test of the next optical channel; if the communication test is finished, the communication test flow is ended;
3) the optical channel receiving end optical sensitivity test flow is as follows:
i. initializing the optical switch: i.e. the starting channel number of the configured light channel, such as j ═ 1;
establishing an input-stimulated physical connection: there are two types of input stimuli, one being FC emulation cards, the other being other optical paths. After input excitation is determined, physical connection from a sending end of the input excitation simulation card to the optical attenuator is realized through optical switch switching;
the physical link is established for the tested optical channel: switching an optical switch according to the current configuration, and establishing physical connection between a receiving end of a measured optical channel (jth path) and an optical attenuator through the optical switch; namely, a physical link is formed at the receiving end of an input excitation optical attenuator and a measured optical channel;
initializing a communication link: the optical attenuator is set to 0 at the moment, namely the optical attenuator does not work, and a communication link between input excitation and a measured optical channel is established;
v, adjusting light attenuation parameters, measuring the current input excited light power through an optical power meter, enabling the measured optical channel to be in a critical state of frame loss and normal communication, recording the light intensity sent to the optical channel to be measured after current attenuation and recording the light intensity;
judging whether the communication test of all the optical channels is finished, if not, configuring the next optical channel as a channel to be tested (namely j is j +1), and then jumping to the jjjj step to carry out the communication test of the next optical channel; if the communication test is finished, the communication test flow is ended;
d) the self-test flow of the test circuit is as follows:
1) selecting test contents: firstly, the optical power self-detection of the FC emulation card sending end enters the step 2; secondly, comparing the first optical attenuator with the second optical attenuator for self-detection, and entering the step 3;
2) the optical power self-detection flow of the FC emulation card sending end is as follows:
i. the physical connection from the sending end of the input excitation simulation card to the optical attenuator-optical power meter is realized through the switching of an optical switch;
ii, measuring the light intensity of the transmitting end of the simulation card, comparing with a standard value, analyzing and recording;
3) the self-detection flow of the optical attenuator is as follows:
i. the physical connection from the transmitting end of the input excitation simulation card to the optical attenuator I-optical power meter is realized through the switching of an optical switch;
adjusting the attenuation parameter of the first optical attenuator, measuring the optical power of the current input excitation through an optical power meter and recording;
iii, realizing physical connection from a sending end of the input excitation simulation card to the optical attenuator II-optical power meter through optical switch switching;
iv, adjusting the attenuation parameter of the second optical attenuator (keeping the same as the attenuation parameter of the first optical attenuator), measuring the optical power of the current input excitation through an optical power meter and recording the optical power;
and v, comparing the two measurement results measured by the optical power meter, and comparing and analyzing the two measurement results with the attenuation parameters of the optical attenuator to realize the self-detection of the first optical attenuator and the second optical attenuator.
Claims (1)
1. An optical circuit integrated test platform, characterized in that the platform comprises an optical switch network, an optical power meter, an optical attenuator, an FC simulation card, and a computer system:
optical switch network: the optical power meter, the optical attenuator and the FC simulation card can be remotely controlled to provide an optical path, and the communication function of measuring all optical channels is supported; the optical switch network consists of a plurality of optical path gating switches, optical path physical connection is established among all the tested optical channels, the optical power meter, the optical attenuator and the FC simulation card, and all the tested optical channels are respectively communicated with the optical power meter, the optical attenuator and the FC simulation card by remotely controlling the optical path gating switches in the optical switch network, so that communication test and optical channel physical layer signal quality test of all the optical channels are realized;
an optical power meter: the optical switch is connected with the optical switch network and used for measuring the light intensity of the measured optical channel;
an optical attenuator: the optical attenuator provides various optical signals with different set powers for the tested optical channel, and then the optical path integrated test platform tests the change of the tested optical channel along with the optical signals with different set powers through the FC simulation card to determine the sensitivity of the tested optical channel;
FC emulation card: the method is used for simulation, test, data acquisition and analysis of an FC system environment;
a computer system: respectively connected with the optical switch network, the optical power meter, the optical attenuator and the FC simulation card and controlling the same;
FC emulation card communication test: the communication test of all optical channels is realized through an FC simulation card;
optical channel physical layer signal quality test: the optical power test of all the optical channel transmitting ports and the optical sensitivity test of the receiving ports are realized;
the self-detection function of the test circuit is as follows: realizing the self-detection of the optical power of the sending channel of the FC simulation card and the self-detection of the optical attenuator;
the test method based on the optical path integrated test platform comprises the following steps of:
1) selecting an FC simulation card communication test in a main test program;
2) initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
3) the physical link is established by the tested optical channel: switching an optical switch according to the current configuration, and establishing the physical connection between the jth tested optical channel and the FC simulation card through the optical switch;
4) communication initialization: initializing a jth tested optical channel and an FC simulation card, and enabling the jth tested optical channel to enter a communication state;
5) and (3) communication testing: the jth tested optical channel and the FC simulation card are transmitted according to a pre-configured data packet format, so that the FC communication test of the tested optical channel is realized;
6) judging whether the communication tests of all the optical channels are finished, if the tests are not finished, making j equal to j +1, namely configuring a j + 1-th tested optical channel, and then jumping to the step 3 to carry out the communication test of the j + 1-th optical channel; if the test is finished, ending the FC simulation card communication test and entering a main test program;
the optical channel physical layer signal quality test method based on the optical path integrated test platform comprises the following steps:
1) selecting an optical channel physical layer signal quality test in a main test program;
2) selecting test contents: selecting the content of a physical layer to be tested currently, and entering step 3 if selecting the optical power test of an optical channel transmitting end; if the optical channel receiving end optical sensitivity test is selected, entering the step 4;
3) the optical power test flow at the optical channel transmitting end is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
the physical link is established for the tested optical channel: switching the optical switches according to the current j path of optical switch configuration; establishing physical connection between a transmitting end of a jth tested optical channel and an optical power meter through an optical switch;
measuring the light intensity of a jth path of sending port by using an optical power meter, and recording the light intensity;
judging whether optical power tests of all optical channel transmitting ends are finished, if the tests are not finished, enabling j to be j +1, namely configuring a j + 1-th path of tested optical channels, and then jumping to the step ii to carry out communication tests of the j + 1-th path of optical channels; if the test is finished, ending the optical power test of the optical channel sending end, and entering a main test program;
4) the optical channel receiving end optical sensitivity test flow is as follows:
i. initializing the optical switch: configuring the initial channel number of the jth tested optical channel, wherein j is a natural number;
establishing an input excitation signal physical connection: selecting an input excitation signal, and realizing the physical connection between a transmitting end of the input excitation signal and the optical attenuator by switching the optical switch; an FC emulation card or other external optical path can be used as an input excitation signal;
the physical link is established for the tested optical channel: switching an optical switch according to the current configuration, establishing physical connection between a jth tested optical channel receiving end and an optical attenuator through the optical switch, and forming a physical link among an input excitation signal, the optical attenuator and the tested optical channel receiving end;
initializing a communication link: setting the optical attenuator to be in an inoperative state, and establishing a communication link between an input excitation signal and a measured optical channel;
v. adjusting the light attenuation parameter: measuring the optical power of the current input excitation signal through an optical power meter, enabling the tested optical channel to be in a critical state of frame loss and normal communication, and recording the light intensity of the input excitation signal sent to the tested optical channel by the current optical attenuator;
vi, judging whether the optical sensitivity test of all the optical channel receiving ends is finished, if the test is not finished, making j equal to j +1, namely configuring a j + 1-th path of tested optical channel, and then jumping to step iii to perform the communication test of the j + 1-th path of optical channel; if the test is finished, ending the optical sensitivity test of the optical channel receiving end and entering a main test program;
the self-detection method of the test circuit based on the optical path integrated test platform comprises the following steps:
1) selecting a test circuit for self-detection in a main test program;
2) selecting test contents: selecting FC emulation card sending end optical power self-detection, then entering step 3; selecting one optical attenuator or two-to-one comparison self-detection of the optical attenuator, and entering the step 4;
3) the optical power self-detection flow of the FC emulation card sending end is as follows:
i. through the switching of the optical switch, the physical connection from the sending end of the FC emulation card to the first optical attenuator and the optical power meter is realized;
measuring the light intensity of the transmitting end of the simulation card, and comparing, analyzing and recording the light intensity with a standard value;
4) the self-detection flow of the optical attenuator is as follows:
i. the physical connection from the sending end of the FC simulation card to the first optical attenuator and the optical power meter is realized through the switching of the optical switch;
adjusting the attenuation parameter of the first optical attenuator, measuring the optical power of the current input excitation through an optical power meter and recording;
the physical connection from the sending end of the FC simulation card to the second optical attenuator and the optical power meter is realized through the switching of the optical switch;
iv, adjusting the attenuation parameter of the second optical attenuator, keeping the attenuation parameter consistent with the attenuation parameter of the first optical attenuator in the step ii, measuring the optical power of the current input excitation through an optical power meter and recording;
and v, comparing the two measurement results measured by the optical power meter, and comparing and analyzing the two measurement results with the attenuation parameters of the optical attenuator to realize the self-detection of the first optical attenuator and the second optical attenuator.
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