A kind of airborne inquisitor digital signal processing module detection methodTechnical field
The present invention relates to a kind of airborne inquisitor digital signal processing module detection method, it is applied to more particularly to one kindSpace industry, the special detector and its detection method of airborne inquisitor internal digital signal processing module.
Background technology
Airborne inquisitor is one of important composition of airborne inquiry response system, and another important composition is then airborne responseMachine.After inquisitor is inquired by regulation coded format and requirement, wait to be received coming from airborne answering machine（It is absolutely empty）Or warshipThe answer signal of answering machine (vacant lot) is carried, detects and translates this answer signal, to identify the identity of the carrier aircraft of the answering machine, bePilot or automatic monitoring system respond offer foundation corresponding to making.These information include the identification of aircraft identity code, positionConfidence ceases and the specific position recall signal of friendly machine, answer information etc. of meeting an urgent need.
So far, it there is no on domestic and international market and carry out function, performance specifically for airborne inquisitor digital signal processing moduleDeng the automation special inspecting equipment of test, the positioning of component level faults.
But existing means of testing mainly carries out building test environment using special and common hardware functional module, then lead toThe means for crossing bus marco are tested automatically.The big cost of the more volumes of tester quantity is high, and part instrumentation is bought againLimitation；The positioning of component level faults is limited to module to be measured and reserves the few situation of test point, and many characteristic signals are needed in corePiece pin direct measurement there is no method to accomplish automatically, it is necessary to tester progressively carries out troubleshooting manually according to software prompt.
PXI technologies have open and scalability well, can realize different Functional Designs according to demand.Coordinate spiritSoftware living, various automatic test work can be completed.PXI technologies are built test environment from former a lot of variousThe set of various kinds test equipment is reduced to a cabinet and adds corresponding hardware function and display control device.
PXI technological innovations traditional complexity cumbersome test job, has carried out the new situation of portable test.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of small volume, cost are low, airborne inquisitor numeral can be directed toProcessing module carries out the airborne inquisitor digital signal processing module inspection of the tests such as function, performance, the positioning of component level faultsSurvey method.
The technical solution adopted by the present invention is as follows：A kind of airborne inquisitor digital signal processing module detector, including surveyMain frame is tried, test main frame is connected using each hardware function of standard PXI EBIs by PXI case back plates；It is describedEach hardware function includes main control computer, bus card, 1553B cards, Complex interface card, universal meter card and oscillograph card；It is characterized in that：Also include test fixture, including power module, bottom plate pinboard and structural cavity body, structural cavity body plays support and madeWith power module provides the power supply of need of work to part to be measured and exported by bottom plate pinboard；Also include and the master control meterThe connected keyboard display module of calculation machine；Part to be measured is loaded on test fixture to be connected by cable with main frame.
Preferably, each connecting cable between part and main frame to be measured is special test cable.
Airborne inquisitor digital signal processing module detection method based on above-mentioned detector, the detection of Target dots processing moduleMethod is：The RS422 data A for the Target dots processing module that prestored in Complex interface card；In detection before electricity, Target dots processing module is enteredRow short circuit and voltage tester, it is ensured that occur without short circuit and each road operating voltage is normal；In detection after electricity, aobvious control interface passes through comprehensiveClose interface card and send read bus data command to Target dots processing module；Target dots processing module is stored in comprehensive by the reading of AT96 busesThe AT96 bus control commands on Target dots processing module in interface card RAM are closed, and pass through bus card analysis site mark processing moduleRS422 data B；Bus card compares the RS422 data A with the RS422 data B, and it is correct to provide RS422 data BWhether judgement, display is over the display；Test point test is carried out to the respective lines of output signal error, it is special according to test pointProperty positioning failure component.
Preferably, the detection method of decoding module is：Prestore the decoding data A of decoding module in Complex interface card；In detection before electricity, short circuit and voltage tester are carried out to decoding module, it is ensured that occur without short circuit and each road operating voltage is normal；InspectionIn survey after electricity, show control interface and read bus data command is sent to decoding module by Complex interface card；Decoding module passes through AT96Bus reads the AT96 bus control commands being stored in Complex interface card RAM on decoding module, and is analyzed by bus cardThe decoding data B of decoding module；Bus card compares the decoding data A with the decoding data B, provides decoding data BThe judgement of correctness, display is over the display.
Preferably, the decoding data includes and video signal data, poor video signal data, Sin phase demodulations video letterNumber and Cos phase demodulation video signal datas.
Preferably, addressable port module detection method is：The biography down for the addressable port module that prestored in Complex interface cardControl data A；In detection before electricity, short circuit and voltage tester are carried out to addressable port module, it is ensured that without short circuit generation and each roadOperating voltage is normal；In detection after electricity, show control interface and read bus data life is sent to addressable port module by Complex interface cardOrder；1553B cards send down-transmitting data and give addressable port module；Complex interface clamping receives the down-transmitting data and draws addressable port mouldThe biography control data B down of block；Complex interface card compares the control data A that passes down with the control data B that passes down, providesThe judgement for passing control data B correctness down of addressable port module, display is over the display.
Preferably, the addressable port module detection method also includes, prestore addressable port module in 1553B cardsUpload state of a control data A；Complex interface card sends upload data by AT96 buses and gives addressable port module；Addressable port mouldThe upload status data B that the upload data are drawn is sent to 1553B cards by block；1553B cards upload state of a control number by describedAccording to A compared with the upload state of a control data B, the upload state of a control data B correctness of addressable port module is providedJudgement, display over the display.
Preferably, the upload state of a control data include coding-control data and discrete control data.
Preferably, the method for testing of the test point is：Add the survey of all test point positions of the test objectTry pictorial information；Contrasted after the measured value of practical test points is converted into waveform or data with its reference value and provide judgement knotFruit；The test pictures information includes test point position, signal type and test point reference waveform or data.
Compared with prior art, the beneficial effects of the invention are as follows：Small volume, cost are low, can be directed to airborne inquisitor numberWord processing module carries out the test such as function, performance, can realize that component level faults position.
Brief description of the drawings
Fig. 1 is a wherein embodiment midpoint mark processing module detection method schematic diagram of the invention.
Fig. 2 is decoding module detection method schematic diagram in a wherein embodiment of the invention.
Fig. 3 is addressable port module detection method schematic diagram in a wherein embodiment of the invention.
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 ExamplesThe present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, notFor limiting the present invention.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, except non-specifically chattingState, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each featureA simply example in a series of equivalent or similar characteristics.
A kind of airborne inquisitor digital signal processing module detector, including test main frame, test main frame use standard PXIEach hardware function of EBI is connected by PXI case back plates；Each hardware function includes master control meterCalculation machine, bus card, 1553B cards, Complex interface card, universal meter card and oscillograph card；It is characterized in that：Also include test fixture,Played a supportive role including power module, bottom plate pinboard and structural cavity body, structural cavity body, power module provides work to part to be measuredThe power supply that needs simultaneously is exported by bottom plate pinboard；Also include the keyboard display module being connected with the main control computer；It is to be measuredPart is loaded on test fixture to be connected by cable with main frame.
According to the detection device internal field production line requirement, during design in view of it is compact it is portable, be easy to extensionCharacteristic, built using general module, convenient use and maintenance.Host machine part all hardware module uses PXI standard interfaces, leads toThe PXI buses for crossing the backboard of cabinet carry out data transmission, and complete observing and controlling and display function.
Each connecting cable between part and main frame to be measured is special test cable.
In view of the portable design of equipment, so equipped with special test cable between main frame and Special-purpose testing jigAnti-misplug designs.Test cable is easy to install, dismantle and transport.Settled at one go in test process, without changing connecting cable.
Airborne inquisitor digital signal processing module detection method based on above-mentioned detector, as shown in figure 1, Target dots processingThe detection method of module is：The RS422 data A for the Target dots processing module that prestored in Complex interface card；In detection before electricity, to a markProcessing module carries out short circuit and voltage tester, it is ensured that occurs without short circuit and each road operating voltage is normal；In detection after electricity, show controlInterface sends read bus data command by Complex interface card to Target dots processing module；Target dots processing module is read by AT96 busesTake and be stored in AT96 bus control commands in Complex interface card RAM on Target dots processing module, and pass through bus card analysis siteThe RS422 data B of mark processing module；Bus card compares the RS422 data A with the RS422 data B, provides RS422The judgement of data B correctness, display is over the display；Test point test, root are carried out to the respective lines of output signal errorAccording to test dot characteristics positioning failure component.
As shown in Fig. 2 the detection method of decoding module is：Prestore the decoding data A of decoding module in Complex interface card；In detection before electricity, short circuit and voltage tester are carried out to decoding module, it is ensured that occur without short circuit and each road operating voltage is normal；InspectionIn survey after electricity, show control interface and read bus data command is sent to decoding module by Complex interface card；Decoding module passes through AT96Bus reads the AT96 bus control commands being stored in Complex interface card RAM on decoding module, and is analyzed by bus cardThe decoding data B of decoding module；Bus card compares the decoding data A with the decoding data B, provides decoding data BThe judgement of correctness, display is over the display.
The decoding data include and video signal data, poor video signal data, Sin phase demodulations video signal data andCos phase demodulation video signal datas.The special vision signal of part " decoding module " to be measured is produced by Complex interface card, and analyzes decodingThe professional format decoding data of module output.
As shown in figure 3, addressable port module detection method is：The biography down for the addressable port module that prestored in Complex interface cardControl data A；In detection before electricity, short circuit and voltage tester are carried out to addressable port module, it is ensured that without short circuit generation and each roadOperating voltage is normal；In detection after electricity, show control interface and read bus data life is sent to addressable port module by Complex interface cardOrder；1553B cards send down-transmitting data and give addressable port module；Complex interface clamping receives the down-transmitting data and draws addressable port mouldThe biography control data B down of block；Complex interface card compares the control data A that passes down with the control data B that passes down, providesThe judgement for passing control data B correctness down of addressable port module, display is over the display.
The addressable port module detection method also includes, the upload control for the addressable port module that prestored in 1553B cardsStatus data A；Complex interface card sends upload data by AT96 buses and gives addressable port module；Addressable port module is by described inUpload the upload status data B that data are drawn and be sent to 1553B cards；1553B cards by the upload state of a control data A with it is describedUpload state of a control data B to compare, provide the judgement of the upload state of a control data B correctness of addressable port module, showShow over the display.
Due to the particularity for the signal that addressable port module is received and sent, can only use our special 1553B cards withComplex interface card is analyzed.
The upload state of a control data include coding-control data and discrete control data.
The method of testing of the test point is：Add the test pictures letter of all test point positions of the test objectBreath；Contrasted after the measured value of practical test points is converted into waveform or data with its reference value and provide judged result；The surveyAttempting piece information includes test point position, signal type and test point reference waveform or data.The test pictures information is also wrappedInclude the probe tested the point and should used, test cable annexation and test points for attention.
If detect that measurand has failure, first the basic test point to measurand（Power supply, input signalAnd programming device）Tested, then the output signal test point of failure is tested, can not partly use instrumentIn the case of detection, test system provides accurate result and judged by operating personnel with reference to accurate result to mistake.
In most cases according to the measured waveform or data of test point, compared with the reference waveform or data of collectionIt is right, you can to diagnose the component that is out of order.When test point receives external interference, measured result can not reflect tested moduleTime of day.,, may when testing certain test point due to the influence of space radiation so that radio-frequency module is tested as an exampleBecause operating environment is different cause test result different, in this case, cannot be sentenced with certain measured value of test pointDisconnected component quality, but certain component is judged according to a series of changing rule of test point measured values of this manual testQuality.