CN106932764A - The index test of radar HF receiving subsystem module and fault location system and its method - Google Patents
The index test of radar HF receiving subsystem module and fault location system and its method Download PDFInfo
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- CN106932764A CN106932764A CN201710213165.0A CN201710213165A CN106932764A CN 106932764 A CN106932764 A CN 106932764A CN 201710213165 A CN201710213165 A CN 201710213165A CN 106932764 A CN106932764 A CN 106932764A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
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- Radar, Positioning & Navigation (AREA)
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- Computer Networks & Wireless Communication (AREA)
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- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses the index test and fault location system and its method of radar HF receiving subsystem module.The system is including carrying out the test cabinet of index test and fault location to various types of radar HF receiving subsystem modules, controlling processor, the blind various adapters matched one by one with interface and various types of radar HF receiving subsystem modules on the test cabinet of test cabinet operation.The blind blindmate operation for connecting the existing adapter of cause for gossip, test fixture of the measured piece adapter comprising measured piece, the physical connection of measured piece and test cabinet is realized, RF switch network can switch radio-frequency channel, and sequence generation module produces measured piece work schedule and measured piece adapter unique identification code.The present invention is realized when measured piece index is tested, and can be automatically performed fault location in combination with module principle, and breaching conventional radar index testing system can not take into account the limitation of fault location.
Description
Technical field
The present invention relates to a kind of index test in radar automatic test technology field and fault location system and its index
Test and Fault Locating Method, more particularly to a kind of index test of radar HF receiving subsystem module and fault location system and its
Index test and Fault Locating Method.
Background technology
With the development of Radar Technology, radar HF receiving subsystem is presented the spies such as multichannel, integrated, digitlization and modularization
(usual a set of radar HF receiving subsystem receives class mould comprising hundreds and thousands of for point, its module number for including and numerous types
Block), and each module needs many kinds of parameters of test, and the measuring method of each parameter is also far from each other, thus how quick,
The test for accurately and comprehensively completing HF receiving subsystem module performance index is the key technology that Large Radar system engineeringization is developed
One of.
Test performance index is needed to a certain module or is broken down when needing repairing, common method is：
1. module working environment is built, the instrument instrument such as including power supply, clock, excitation, frequency spectrograph, vector network analyzer
Table；
2. module interface definitions are directed to, patchcord is made temporarily, input/output interface is accessed into instrument and meter；
3. certain module is needed to increase sequential or external parameter is encouraged；
4. meter parameter is set, measurement result is observed.
, there is time-consuming, low precision, be difficult the limitation such as extension in this manual testing's method, and to index analysis and event
Barrier is excluded needs tester with professional skill higher, and the result of measurement can be influenceed by human factor, can not
The demand of actual test is adapted to, this also turns into the bottleneck of restriction radar test technology development.
At present, in radar test field, existing correlative study achievement, China Electronic Science and Technology Corporation the 38th is studied
Disclosed patent《A kind of multi-channel wide tape pulse power detection device, publication number： 205665391U》, China Electronics's science and technology collection
Company the 41st of group research institute's publication《A kind of digital array module transmitter channels phase equalization method of testing and dress
Put, publication number：103592637A》, CAS Electronics Research Institute's publication《UWB SARt receiver down coversion connects
Receive passage magnitude-phase characteristics method of testing, publication number：103138845B》.Above-mentioned method of testing or device, primarily directed to certain model
Radar fixation kit or module testing, autgmentability are poor, and do not possess fault location function.
The content of the invention
To meet the research and development of modern radar equipment, batch product and the demand of basic unit's maintenance and repair, the present invention proposes that a kind of radar connects
The index test of contracture system module and fault location system and its index test and Fault Locating Method, are used to solve to test thunder
Low up to HF receiving subsystem module efficiency, ease for use is poor, is difficult extension and cannot carry out the technical problem such as be automatically positioned of failure.
In order to realize foregoing invention purpose, the present invention uses following technical scheme：A kind of radar HF receiving subsystem module
Index test and fault location system, it includes carrying out index test and failure to various types of radar HF receiving subsystem modules
The test cabinet of positioning, the processor for controlling test cabinet operation；Wherein：It also includes：
Blind with interface, it is arranged on the test cabinet, and is received with the various types of radars on the test cabinet
Various tests needed for subsystem module are electrically connected with instrument；
The various adapters matched one by one with various types of radar HF receiving subsystem modules, every kind of adapter includes carrying
Body and on this carrier blind with pinboard, test fixture, sequence generation module and RF switch network is installed；This it is blind with turn
Fishplate bar is electrically used for blind with the electrical grafting of interface with this, and the test fixture is used for the clamping of corresponding radar HF receiving subsystem module
It is forwarded on this carrier and electrically the sequence generation module；The sequence generation module is produced and corresponding radar HF receiving subsystem mould
The corresponding work schedule of block, the RF switch network is constituted and corresponding radar HF receiving subsystem module phase according to the work schedule
Corresponding radio-frequency channel：It is blind blind with interface with this with pinboard by electrical grafting this, those are electrically gated with corresponding radar
The corresponding test instrument of HF receiving subsystem module.
Used as the further improvement of such scheme, the sequence generation module is according to radar HF receiving subsystem module in figure number
Module figure number in table, solidifies the unique identifier of corresponding radar HF receiving subsystem module.
Further, the processor has carries out index test and failure to various types of radar HF receiving subsystem modules
The automatic testing software of positioning：Instrument general switching software, database and testing process control software；The instrument general switching software passes through
The all test instrument of gpib bus Interface Controller, realize that Meter Test parameter setting, measurement result read and meter status are anti-
Feedback；The database comprising radar, measured piece figure number and adapter identification code three mapping relations, instrument and meter parameter setting values,
Index test step, the reasonable bound of desired value and fault location step, the testing process control software are selected comprising measured piece
Select, instrument self-inspection, test index output, fault location indicate and maintenance suggestion function, realize the automatic fortune of whole testing process
OK.
Yet further, the automatic testing software uses fault tree system, and measured piece failure is judged for analyzing, and according to
The reason for accident analysis failure occurs, the method for then proposing diagnosis finally realizes the positioning of failure, and fault tree system is included most
Annexation figure, cell failure description and four basic elements of failure priority tree between I positioning unit, unit.
Used as the further improvement of such scheme, each electrical part on the test cabinet passes through gpib bus interface and is somebody's turn to do
Processor reaches information communication.
As the further improvement of such scheme, it is provided with the test cabinet and Ethernet interface is converted into RS422 standards
The serial server of the EBI, the serial server is connected with the processor using Ethernet, with radar HF receiving subsystem
The adapter of module is connected using RS422 IEEEs.
As the further improvement of such scheme, the sequence generation module with Large Copacity fpga chip as core, for not
The radar HF receiving subsystem module of same type, writes firmware program, produces the radar HF receiving subsystem module work of respective type
Sequential, controls respective radio-frequency switching network.
The present invention also provides a kind of index test and Fault Locating Method of radar HF receiving subsystem module, and it is applied to
In stating the index test of radar HF receiving subsystem module and fault location system, the index test and Fault Locating Method include with
Lower step：
Step one, automatic testing software are to whole index test and the instrument of the various test instrument of fault location system
State, communication link carry out self-inspection, confirm fault-free；
Step 2, input need the module figure number of test, and automatic testing software points out corresponding adapter code；
Step 3, the adapter corresponding with adapter code is accessed into Auto-Test System, this adapter can be to automatic
Test software sends corresponding unique identifier, automatic testing software can identification adapter type, and with database in target
Identification code is compared；
After step 4, the confirmation of corresponding adapter are errorless, the user installation radar corresponding with this adapter is pointed out to receive
Subsystem module；
Step 5, the corresponding radar HF receiving subsystem module of installation, index test detect this first with fault location system
The impedance of the power input of radar HF receiving subsystem module, or if there is short circuit open circuit phenomenon, user malfunction can be pointed out
Information and method for diagnosing faults, if failure can not be excluded, then index test can stop test with fault location system,
Ensure that this radar HF receiving subsystem module or index test and fault location system can not be damaged；
After step 6, completion above step, automatic testing software starts auto test flow, while monitoring power supply electricity
Pressure, electric current, can immediately close power supply, and point out failure and method for diagnosing faults if there is abnormal；
Step 7, the performance indications result of automatic test submits to test software carries out display analysis；If test result
Index is normal, then index test can terminate testing process with fault location system, generates test result form, and write data
Storehouse；
Step 8, in step 7, if test result shows that this radar HF receiving subsystem module has failure, then from
Dynamic test software points out user further to test according to fault type, and provides method for diagnosing faults and correlative measurement pilot,
Fault location is realized using fault tree system.
Used as the further improvement of such scheme, fault tree system employs the mode of failure priority, 0 grade of table of priority
Show fault-free, the bigger relative importance value of numerical priority value is smaller, that is, representing must exclude upper level failure, can just carry out this grade of failure
Measurement and judgement；Fault tree system is mainly made up of four basic elements：Annexation figure most between I positioning unit, unit,
Cell failure is described and failure priority tree；Most I positioning unit refer to being completed in fault tree system one or
The separate building blocks of person's multiple function；Unit piece annexation figure be exist between unit in fault tree system physics or
Person's annexation in logic；Cell failure description contains a strict logical relation --- event is found by phenomenon of the failure
Barrier may the reason for, then verified with diagnostic method, it was therefore concluded that after processed；Failure priority tree is according to event
The relation of barrier necessary condition and adequate condition is set up.
Used as the further improvement of such scheme, in step 4, after corresponding adapter confirmation is errorless, not only prompting is used
The radar HF receiving subsystem module corresponding with this adapter is installed at family, also shows the pictorial diagram of this radar HF receiving subsystem module
Piece, allows user to further confirm that measured piece.
The invention has the advantages that：Easy to operate, index test is automatically performed with fault location；Easily extension, radar is received
All modules of subsystem can be tested；Test coverage is high, and all replaceable devices can realize fault location in module；
Have a wide range of application, can be applied to HF receiving subsystem module and develop, criticize and produce and maintenance phase；Possess short circuit, open circuit, excessively stream, overvoltage
And Adapter ID identification protecting function.
Brief description of the drawings
Fig. 1 is the structured flowchart of the index test with fault location system of radar HF receiving subsystem module of the invention.
Fig. 2 is the schematic diagram in kind of index test and fault location system in Fig. 1.
Fig. 3 is the signal flow graph of index test and fault location system in Fig. 1.
Fig. 4 is the structured flowchart of the adapter of index test and fault location system in Fig. 1.
Fig. 5 is the auto test flow of the index test with Fault Locating Method of radar HF receiving subsystem module of the invention
Figure.
Fig. 6 is the failure priority division figure of index test and Fault Locating Method in Fig. 5.
Fig. 7 is the fault tree system schematic diagram of index test and Fault Locating Method in Fig. 5.
Fig. 8 is the graph of a relation between test event and failure in whole test system i.e. index test and fault location system.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Also referring to Fig. 1, Fig. 2 and Fig. 3, index test of the invention is mainly used in testing thunder with fault location system
Up to HF receiving subsystem module, radar HF receiving subsystem module is measured piece 16.Index test includes test with fault location system
It is rack 1, processor 13, blind with interface 17, various adapters 15.To various types of measured pieces 16, (i.e. radar connects test cabinet 1
Contracture system module) index test and fault location are carried out, processor controls the operation of test cabinet 1.In order to prevent falling suddenly
Damage of the electricity to system, system can also install uninterrupted power source 12.
Various test instrument needed for various types of radar HF receiving subsystem modules are mounted with test cabinet 1 and
Additional device, in the present embodiment, test cabinet 1 is standard cabinet, installs power module 10, frequency spectrograph 6, signal source 3, oscillography
Device 5, digital multimeter 4, serial server 9, AWG 8, total power switch 2, cable interface 11, wherein, frequency spectrum
Instrument 6, signal source 3, oscillograph 5, digital multimeter 4, AWG 8 are test instrument, power module 10, serial ports clothes
Business device 9, total power switch 2, cable interface 11 are additional device.Ethernet interface is converted to RS422 standards by serial server 9 should
EBI, serial server 9 is connected with processor 13 using Ethernet, and the adapter with measured piece 16 uses RS422 standards
EBI is connected.Each electrical part on test cabinet 1 can reach information and lead to by gpib bus interface 25 and processor 13
News.The top of test cabinet 1 can install radiator fan, be equipped with total power switch 2.
Test cabinet 1 can be 19 inches of racks of standard, and all instrument for testing instrument are arranged on the support of test cabinet 1
On, in the cabling channel that all internal electric sources and holding wire are fixed according to specification.Processor 13 (such as computer) passes through cable interface
11 are connected to serial server 9 using netting twine 23.The input of uninterrupted power source 12 is 220V civil powers, and output is connected to computer all the way,
Another road is connected to test cabinet 1.Test cabinet 1 closes this total power switch 2 equipped with total power switch 2 at the end of test.
Processor 13 can be computer, and convenient installation carries out index test to various types of radar HF receiving subsystem modules
With the automatic testing software of fault location, it is also convenient for that printer 24 is installed.Certainly, processor 13 can also be other main control chips
Or CPU, as long as the automatic testing software that various types of measured pieces 16 are carried out with index test and fault location can be installed.Automatically
Test software is mainly：Instrument general switching software, database and testing process control software.The instrument general switching software is total by GPIB
Line interface 25 controls all test instrument, realizes that Meter Test parameter setting, measurement result read and meter status feedback；It is
All instrument bsp driver interface functions are integrated, calling interface function is capable of achieving all by gpib bus Interface Controller
Test instrumentation, realizes that Meter Test parameter setting, measurement result read and meter status feedback.The database includes radar, quilt
Survey part figure number and adapter identification code three mapping relations, instrument and meter parameter setting values, index test step, the conjunction of desired value
Reason bound and fault location step.Database can be edited by the designer for being familiar with measured piece principle, be independent of Software for Design teacher.
The testing process control software is indicated and maintenance suggestion comprising measured piece selection, instrument self-inspection, test index output, fault location
Function, realizes the automatic running of whole testing process.
All test instrumentations and computer can be linked together by gpib interface 25 (the GPIB cards in such as Fig. 1), be calculated
Machine can carry out parameter setting and reading meter status to instrument according to testing requirement.Serial server 9 and Computer IP address
In the same network segment, connected using netting twine 23 by cable interface 11.In order to increase antijamming capability, serial server 9 with it is tested
Connected by RS422 buses 22 between the adapter 15 of part 16, transmitting-receiving is independent.So, computer passes through serial server 9, with
The adapter 15 of measured piece 16 sets up communication link.The link is easy to use, it is to avoid adapter 15 designs other complicated interfaces,
Simplify its design.
It is blind to be arranged on test cabinet 1 with interface 17, because therefore the inside in test cabinet 1 do not show in Fig. 1
Show.Various test instrument needed for blind various types of radar HF receiving subsystem modules with interface 17 and test cabinet 1
Table is electrically connected with.Blind is unique interface that test cabinet 1 is connected with the adapter 15 of measured piece 16 with interface 17, is realized blind
Insert, it is blind with interface 17 by power module 10, frequency spectrograph 6, signal source 3, oscillograph 5, the power supply of serial server 9, clock, radio frequency
Input, radio frequency output and communication link are integrated, and all different types of adapters 15 have identical blind with interface 17.
Therefore, in the present invention, blind is constant, only one of which with interface 17, and adapter 15 can be with the class of measured piece 16
Type is different and different.
The species of adapter 15 is consistent with the species of measured piece 16, and the number of species of measured piece 16 determines adapter 15
Quantity.As long as ensureing that the species of adapter 15 is identical with the species of measured piece 16, same type of measured piece 16 can be with same
Individual adapter 15.Therefore, index test has each with what various types of measured pieces 16 matched one by one with fault location system
Plant adapter 15.In Fig. 2, for simplicity accompanying drawing, the adapter 15 needed during system operation is only depicted.
Incorporated by reference to Fig. 4, every kind of adapter 15 includes carrier (can be box body) and installation on this carrier blind with switching
Plate 18, test fixture 21, sequence generation module 19 and RF switch network 20.It is blind to be electrically used for blind with interface with pinboard 18
17 electrical grafting.The test fixture 21 is used to that corresponding measured piece 16 to be clamped on this carrier and is electrically forwarded to sequential generation
Module 19, sequence generation module 19 produces the work schedule corresponding with corresponding measured piece 16, and RF switch network 20 is according to this
Work schedule constitutes the radio-frequency channel corresponding with corresponding measured piece 16：Blind by electrical grafting with pinboard 18 and blind is connected
Mouth 17, electrically gates those test instrument corresponding with corresponding measured piece 16.Blind is test cabinet 1 and quilt with pinboard 18
The interface of the adapter 15 of part 16 is surveyed, is that adapter 15 provides power supply, clock, signal and communication link.
Sequence generation module 19 can write firmware program with Large Copacity fpga chip as core, for different measured pieces, produce
Raw measured piece work schedule, controlling switch network.Sequence generation module 19 can be according to radar HF receiving subsystem module in figure number table
In module figure number, solidify the unique identifier of corresponding radar HF receiving subsystem module.RF switch network 20 is produced by sequential
Module 19 is controlled, and different radio-frequency channels are constituted as needed.Sequence generation module 19 using RS422 communication interfaces with it is blind with turn
Fishplate bar 18 is connected, and can receive the instruction of computer transmission, and to computer status data.Sequence generation module 19 is built-in
Crystal oscillator, while also supporting external clock input.Sequence generation module 19 is equipped with external sync input port, supports outside same
Step trigger signal.Sequence generation module 19 supports TTL/COMS, RS422 difference and LVDS logical signal input and output, is suitable for
Polytype radar HF receiving subsystem module.Sequence generation module 19 solidifies unique identification code, and test software thus can be certainly
The type of the adapter 15 of dynamic identification measured piece 16.For the radar HF receiving subsystem mould for having multi input or multi output radio frequency interface
Block, sequence generation module 19 according to demand, can switch the radio-frequency channel of RF switch network 20, realize that the timesharing of multichannel is surveyed
Examination.
The typically no particular/special requirement of test fixture 21, as long as measured piece 16 can be clamped in into the carrier in mechanical structure
On, measured piece 16 electrically can be forwarded to sequence generation module 19 on electrical structure.Test fixture 21 provide structure and
Telecommunication is connected, and is installed preferably with the positive and negative both direction of achievable measured piece 16, and the device of the tow sides of measured piece 16 all may be used
Realize the test fixture of detection manually.
Automatic testing software uses fault tree system, and measured piece failure is judged for analyzing, and according to accident analysis failure
The reason for generation, the method for then proposing diagnosis finally realizes the positioning of failure, and it is single that fault tree system includes that most I is positioned
Annexation figure, cell failure description and four basic elements of failure priority tree between unit, unit.The sequence generation module 19
With Large Copacity fpga chip as core, for different types of radar HF receiving subsystem module, firmware program is write, produced corresponding
The radar HF receiving subsystem module work schedule of type, control respective radio-frequency switching network 20.
Auto-Test System can also be positioned except user can be helped fast and accurately to test the project indicator of measured piece
Trouble point, helps test and maintenance personnel to complete failture evacuation.Fault tree system is used to analyze and judges measured piece failure, and according to
The reason for accident analysis failure occurs, the method for then proposing diagnosis, finally realizes the positioning of failure.The failure of this test system
Tree system employs the mode of failure priority, and 0 grade of expression fault-free of priority, the bigger relative importance value of numerical priority value is smaller, i.e.,
Expression must exclude upper level failure, can just carry out this grade of measurement and judgement of failure.The mode for employing this classification can be with
Software is facilitated to guide operator's analyzing and positioning failure.
Fault tree system constitutes annexation figure, cell failure most between I positioning unit, unit by four basic elements
Description and failure priority tree.Most I positioning unit refers to that the only of one or more function can be completed in systems
Vertical construction unit, the unit can physically make a distinction.The most I positioning unit of the system mainly for it is replaceable
Module, some one integral piece can be otherwise varied.Unit piece annexation figure is there is physics or logic between unit in one integral piece
On annexation, this relation directly influenced the formation of failure priority tree.Cell failure description is fault tree system
Important content, failure-description contains phenomenon of the failure, failure reason analysis, method for diagnosing faults and solution.It is this to retouch
State and contain a strict logical relation --- the reason for failure possibility is found by phenomenon of the failure, then entered with diagnostic method
Row checking, it was therefore concluded that after processed.Failure priority tree is the core of fault tree system, and the design of priority tree must be tight
The principle of the tested one integral piece of close combination, otherwise will be unable to obtain an effective Fault Locating Method.Failure priority tree be according to
What the relation of failure necessary condition and adequate condition was set up, be also the difficult point of design with strict logical relation.
In the present embodiment, test cabinet 1 carries various testing meter and instruments, is index test and fault location system
Test hardware platform, power module 10 be measured piece 16 provide plurality of specifications power supply output, frequency spectrograph 6 measurement measured piece 16
The power or frequency of output signal, signal source 3 are exported and meet the normal work of measured piece 16 according to the demand of different measured pieces 16
Clock signal or radio-frequency input signals, the observation time domain waveform of oscillograph 5, digital multimeter 4 measurement voltage or electric current, computer peace
Dress host computer test software (i.e. the automatic testing software of index test and fault location), the connection computer of serial server 9 with
The adapter 15 of measured piece 16, builds communication link.
Incorporated by reference to Fig. 5, index test with fault location system in index test and fault location, its index test with therefore
Barrier localization method may include following steps.
After step one, test system start, automatic testing software is carried out to whole test system meter status, communication link
Self-inspection, confirms fault-free.
Step 2, input need the module figure number of test, and automatic testing software is pointed out corresponding adapter code and deposited
Put casing numbering and position.
Step 3, adapter access Auto-Test System, and adapter can send identification code to automatic testing software, automatic to survey
Examination software meeting identification adapter type, and compare with the identification code in database.
After step 4, adapter confirmation are errorless, the corresponding measured piece of user installation is pointed out, and show measured piece pictorial diagram
Piece, allows user to further confirm that measured piece.
Step 5, installation measured piece, system detect the impedance of measured piece power input first, or if there is short circuit
Open circuit phenomenon, can point out user malfunction information and method for diagnosing faults, if failure can not be excluded, then system can stop
Test, it is ensured that measured piece or test system can not be damaged.
After step 6, completion above step, automatic testing software starts auto test flow, while monitoring power supply electricity
Pressure, electric current, can immediately close power supply, and point out failure and method for diagnosing faults if there is abnormal.
Step 7, the performance indications result of automatic test submits to test software carries out display analysis.If test result
Index is normal, then test system can terminate testing process, generates test result form, and write into Databasce.
Step 8, in step 7, if test result shows that measured piece has failure, then automatic testing software meeting
Point out user further to test according to fault type, and provide method for diagnosing faults and correlative measurement pilot, using fault tree
Test system realizes fault location.
Receiver module test system employs fault tree system, and fault tree is typical tree structure, as shown in fig. 6, Fig. 6
In illustrate a simple three-level fault tree, failure priority is determined according to the relation between measured piece each functional module
's.
The test event management for receiving module test system is based on fault tree system.Test event is equally divided into some etc.
Level, if test system finds that measured piece does not have failure, then system can forbid carrying out the test of inferior grade test event.As schemed
Shown in 7, test event can trigger corresponding failure, and in order to tracing trouble can initiate corresponding test event.Must
Must measured piece break down can just cause respective level fault diagnosis test.Auto-Test System is by fault type and test event
According to priority it is ranked up.
The content of two previous section, in elaborating test system, the relation between test event and failure；In whole test system
Relation such as Fig. 8 in system between test event and failure.
As can be seen from Figure 8, each test event may be found that a kind of or multiple phenomena of the failure, but failure is existing
The reason for as failure can not be illustrated, therefore, it is necessary to mutually deserved test event validation fault is existing after certain phenomenon of the failure occurs
As the reason for, therefore phenomenon of the failure can trigger the measurement of multiple test events.Fault tree system exactly this system.When
Test system can point out necessary test event measurement with tracing trouble when certain phenomenon of the failure is found in test process
True cause.The annexation figure set up between fault type and test event.Measured piece is abnormal to survey when a certain project is tested
Test result can be produced by N number of failure cause, for a certain failure cause, need to carry out n test event again, then survey item by item successively
Examination, until fault location.
Above content is to combine the detailed description made for the present invention of specific preferred embodiment, it is impossible to assert the present invention
Specific implementation is only limitted to these explanations.For those skilled in the art, structure of the present invention is not being departed from
On the premise of think of, some simple deduction or replace can also be made, should all be considered as belonging to right of the present invention by being submitted to will
The invention protection domain for asking book to determine.
Claims (10)
1. a kind of index test and fault location system of radar HF receiving subsystem module, it includes connecing various types of radars
Test cabinet that contracture system module carries out index test and fault location, the processor for controlling the test cabinet to run；It is special
Levy and be：It also includes：
Blind with interface, it is arranged on the test cabinet, and is with the various types of radars receptions point on the test cabinet
Various tests needed for system module are electrically connected with instrument；
The various adapters matched one by one with various types of radar HF receiving subsystem modules, every kind of adapter include carrier with
And on this carrier blind with pinboard, test fixture, sequence generation module and RF switch network is installed；This is blind with pinboard
Electrically it is used for blind with the electrical grafting of interface with this, the test fixture is used to for corresponding radar HF receiving subsystem module to be clamped in this
It is forwarded on carrier and electrically the sequence generation module；The sequence generation module is produced and corresponding radar HF receiving subsystem module phase
Corresponding work schedule, the RF switch network constitutes corresponding with corresponding radar HF receiving subsystem module according to the work schedule
Radio-frequency channel：It is blind blind with interface with this with pinboard by electrical grafting this, electrically gate those and received with corresponding radar
The corresponding test instrument of subsystem module.
2. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 1, it is characterised in that：
Module figure number of the sequence generation module according to radar HF receiving subsystem module in figure number table, solidifying corresponding radar reception point is
The unique identifier of module of uniting.
3. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 2, it is characterised in that：
The processor is soft with the test automatically of fault location with index test is carried out to various types of radar HF receiving subsystem modules
Part：Instrument general switching software, database and testing process control software；The instrument general switching software passes through gpib bus Interface Controller institute
There is test instrument, realize that Meter Test parameter setting, measurement result read and meter status feedback；The database includes thunder
Up to, measured piece figure number and adapter identification code three mapping relations, instrument and meter parameter setting values, index test step, index
The reasonable bound and fault location step of value, the testing process control software refer to comprising measured piece selection, instrument self-inspection, test
Mark output, fault location are indicated and maintenance suggestion function, realize the automatic running of whole testing process.
4. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 3, it is characterised in that：
The automatic testing software uses fault tree system, and measured piece failure is judged for analyzing, and occurred according to accident analysis failure
Reason, the method for then proposing diagnosis finally realizes the positioning of failure, and fault tree system includes most I positioning unit, unit
Between annexation figure, cell failure description and four basic elements of failure priority tree.
5. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 1, it is characterised in that：
Each electrical part on the test cabinet reaches information communication by gpib bus interface and the processor.
6. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 1, it is characterised in that：
The serial server that Ethernet interface is converted to the RS422 standards EBI, the serial port service are provided with the test cabinet
Device is connected with the processor using Ethernet, and the adapter with radar HF receiving subsystem module uses RS422 IEEEs
Connection.
7. the index test and fault location system of radar HF receiving subsystem module as claimed in claim 1, it is characterised in that：
The sequence generation module, for different types of radar HF receiving subsystem module, writes solid with Large Copacity fpga chip as core
Part program, produces the radar HF receiving subsystem module work schedule of respective type, controls respective radio-frequency switching network.
8. a kind of index test and Fault Locating Method of radar HF receiving subsystem module, it is applied to as in claim 1 to 7
In the index test and fault location system of the radar HF receiving subsystem module described in any one, it is characterised in that：The index
Test is comprised the following steps with Fault Locating Method：
Step one, automatic testing software are to whole index test and the instrument shape of the various test instrument of fault location system
State, communication link carry out self-inspection, confirm fault-free；
Step 2, input need the module figure number of test, and automatic testing software points out corresponding adapter code；
Step 3, the adapter corresponding with adapter code is accessed Auto-Test System, this adapter can be to automatic test
Software sends corresponding unique identifier, automatic testing software can identification adapter type, and with database in target identification
Code is compared；
After step 4, the confirmation of corresponding adapter are errorless, the radar reception point for pointing out user installation corresponding with this adapter is
System module；
Step 5, the corresponding radar HF receiving subsystem module of installation, index test detect this radar first with fault location system
The impedance of the power input of HF receiving subsystem module, or if there is short circuit open circuit phenomenon, user malfunction information can be pointed out
And method for diagnosing faults, if failure can not be excluded, then index test can stop test with fault location system, it is ensured that
This radar HF receiving subsystem module or index test and fault location system can not be damaged；
After step 6, completion above step, automatic testing software starts auto test flow, while monitoring supply voltage,
Electric current, can immediately close power supply, and point out failure and method for diagnosing faults if there is abnormal；
Step 7, the performance indications result of automatic test submits to test software carries out display analysis；If test result index
Normally, then index test can terminate testing process with fault location system, test result form, and write into Databasce are generated；
Step 8, in step 7, if test result shows that this radar HF receiving subsystem module has failure, then automatic to survey
Examination software points out user further to test according to fault type, and provides method for diagnosing faults and correlative measurement pilot, uses
Fault tree system realizes fault location.
9. the index test and Fault Locating Method of radar HF receiving subsystem module as claimed in claim 8, it is characterised in that：
Fault tree system employs the mode of failure priority, and 0 grade of priority represents fault-free, and the bigger relative importance value of numerical priority value is more
Small, that is, representing must exclude upper level failure, can just carry out this grade of measurement and judgement of failure；Fault tree system is main by four
Basic element is constituted：Annexation figure, cell failure description and failure priority tree most between I positioning unit, unit；Most
I positioning unit refers to be completed in fault tree system the separate building blocks of one or more function；Unit piece
Annexation figure is there is physics or annexation in logic between unit in fault tree system；Cell failure is described
Contain a strict logical relation --- the reason for failure possibility is found by phenomenon of the failure, then carried out with diagnostic method
Checking, it was therefore concluded that after processed；Failure priority tree is set up according to the relation of failure necessary condition and adequate condition.
10. the index test and Fault Locating Method of radar HF receiving subsystem module as claimed in claim 8, its feature exists
In：In step 4, after corresponding adapter confirmation is errorless, the radar for not only pointing out user installation corresponding with this adapter connects
Contracture system module, also shows the picture in kind of this radar HF receiving subsystem module, allows user to further confirm that measured piece.
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