CN104184525A - Digital-flight-data-acquisition-unit-based test platform and test method of signal transmission device - Google Patents
Digital-flight-data-acquisition-unit-based test platform and test method of signal transmission device Download PDFInfo
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Abstract
The invention relates to a DFDAU (digital flight data acquisition unit)-based test platform and test method of an aircraft signal transmission device. The DFDAU-based test platform of the aircraft signal transmission device includes a simulation signal generation part and a test part. The simulation signal generation part includes an input interface which receives test data; a simulation signal generation module which generates simulation signals according to the test data; and an output interface which is suitable for being connected with an end of each of one or more to-be-tested signal transmission devices to output the simulation signals. The test part includes a wiring extending device which is used for forming a gateable wiring device and suitable for being connected with the other end of each of the one or more to-be-tested signal transmission devices so as to receive the simulation signals; a DFDAU which receives the simulation signals which are from the wiring extending device; and a comparison module which compares the test data which is input to the input interface and test data which is based on the simulation signals from the wiring extending device.
Description
Technical field
The present invention relates to a kind of test platform and method of testing of aircraft devices, especially, relate to signal transmission apparatus test platform and the method for testing of a kind of digital aircraft states data acquisition component DFDAU.
Background technology
For aircraft states is monitored and analyzed, a large amount of transducers is installed on airborne vehicle.These transducers are surveyed the aircraft states data of the magnanimity such as acceleration, air speed, height above sea level, wing configuration, ambient temperature, cabin temperature and pressure, engine performance that gather airborne vehicle.These aircraft states data have very important meaning for the safe operation of airborne vehicle.
When airborne vehicle breaks down, the aircraft states data of reflection airborne vehicle running status there will be extremely.The reason that airborne vehicle breaks down is varied, therefore, for the fault location of airborne vehicle, is very difficult sometimes.Particularly, aircraft components itself may break down, and transducer itself may break down, and for the signal transmission apparatus of the measured aircraft states data of transmission sensor, also likely breaks down.
Another aspect, the control system of airborne vehicle also may break down.Airborne vehicle control system receives control command, control command is converted to control signal and control signal is transferred to all parts of airborne vehicle, by all parts of airborne vehicle, completes corresponding action.The fault location of airborne vehicle control system is also difficult.Particularly, itself may break down airborne vehicle activation part, and itself may break down control command input equipment, for transmission of control signals transmission equipment, also likely breaks down.
For the fault location of airborne vehicle, if can get rid of the possibility of signal transmission apparatus fault, speed that can very large quickening fault location.In prior art, be not exclusively used in the instrument of test signal transmission equipment.In a lot of situations, need to be by the test of ability settling signal transmission equipment after aircraft dismounting.And due to various measuring-signals on airborne vehicle and control signal type complexity, feature is different, to the test of signal transmission apparatus on airborne vehicle is also non-, correspondingly become complicated and difficult.Therefore, this area needs a kind of test platform and method of testing for airborne vehicle signal transmission apparatus itself.
Summary of the invention
For the technical problem existing in prior art, according to an aspect of the present invention, a kind of test platform of the airborne vehicle signal transmission apparatus based on DFDAU is proposed, comprising: simulate signal generation part, it comprises: input interface, it receives test data; Simulate signal generation module, it produces simulate signal according to described test data; And output interface, it is suitable for the one end being connected with one or more signal transmission apparatus to be tested, exports described simulate signal; And part of detecting, it comprises: wiring expanding unit, and it is used for forming gateable termination, is suitable for being connected with the other end of described one or more signal transmission apparatus to be tested, receives described simulate signal; DFDAU, it receives the simulate signal from described wiring expansion equipment; And comparison module, it relatively inputs to the test data of the described test data of input interface and the simulate signal based on from described wiring expansion equipment.
According to another aspect of the present invention, a kind of method of testing of airborne vehicle signal transmission apparatus is proposed, comprise: one end of one or more signal transmission apparatus to be tested is connected to the output interface that part occurs at simulate signal described in test platform as above, the other end of one or more signal transmission apparatus to be tested is connected in the wiring expansion equipment of part of detecting described in test platform as above; On test platform as above, be written into test data; According to described test data, produce simulate signal; Reception is from the simulate signal of described wiring expansion equipment; Relatively input to the test data of the described test data of input interface and the simulate signal based on from described wiring expansion equipment.
Accompanying drawing explanation
Below, in connection with accompanying drawing, the preferred embodiment of the present invention is described in more detail, wherein:
Fig. 1 is the schematic diagram of DFDAU operational environment according to an embodiment of the invention;
Fig. 2 is the test platform architecture schematic diagram for test signal transmission equipment according to an embodiment of the invention;
Fig. 3 is simulate signal generation modular structure schematic diagram according to an embodiment of the invention;
Fig. 4 is the structural representation of alternating voltage ratio signal ACVR signal generating unit according to an embodiment of the invention;
Fig. 5 is the structural representation of alternating voltage ratio signal ACVR signal generating unit according to another embodiment of the invention;
Fig. 6 is the structural representation of the synchronous SYNC signal generating unit of alternating voltage according to an embodiment of the invention;
Fig. 7 is the structural representation of the synchronous SYNC signal generating unit of alternating voltage according to another embodiment of the invention;
Fig. 8 is the structural representation of patchboard according to an embodiment of the invention;
Fig. 9 is the schematic diagram of patchboard panel according to an embodiment of the invention;
Figure 10 is the method flow diagram of test signal transmission equipment according to an embodiment of the invention; And
Figure 11 is that the test airborne vehicle message on test platform of the present invention triggers the method flow diagram of logic according to one embodiment of present invention.
Figure 12 is the method flow diagram of the test signal transmission equipment on test platform of the present invention according to one embodiment of present invention.
Embodiment
So-called " airborne vehicle signal transmission apparatus " refers on airborne vehicle for transmitting the signal transmission apparatus from the control signal of control system or other equipment from the signal of the reflection aircraft states of each transducer or other equipment and transmission.The signal of transmission includes but not limited to switching value signal, quiescent voltage signal, analog signal and/or bus signals.Airborne vehicle signal transmission apparatus includes but not limited to wire transmission equipment, as coaxial cable, telecommunication cable and composite cable.
The test platform that utilization of the present invention comprises simulate signal generator and DFDAU is realized the test of airborne vehicle signal transmission apparatus.According to one embodiment of present invention, the signal generation that comprises simulate signal generator of test platform divides and comprises the part of detecting of DFDAU.The two can be separated.Because DFDAU can record status data and the control command of all airborne vehicles, airborne vehicle signal transmission apparatus test platform based on DFDAU of the present invention can be for all airborne vehicle signal transmission apparatus, and without the airborne vehicle signal transmission apparatus for certain type, corresponding processing unit are set separately.
Fig. 1 is the schematic diagram of DFDAU operational environment according to an embodiment of the invention.The core component that carries out acquisition and processing for aircraft states data on airborne vehicle is digital aircraft states data acquisition component DFDAU(Digital Flight Data Acquisition Unit).
DFDAU is a kind of integrated on-board data acquisition and processing system.DFDAU comprises data acquisition subsystem, it is used for gathering the real-time aircraft states data from each transducer on airborne vehicle, and becomes digital signal to store aircraft states data logger QAR(Quick Access Recorder into the data transaction of obtaining) in.
DFDAU also comprises data process subsystem, for example aircraft states supervisory control system ACMS(Aircraft Condition Monitoring System).The data that ACMS can collect with real-time mode according to DFDAU realize to be monitored aircraft states.When meeting certain triggering logic, ACMS generates the message that comprises accordingly particular aircraft status data.Message can show by airborne indicator, prints, or be stored in data disks and use after airborne vehicle misses the stop or navigates for navigational matters or flight crew by airborne printing device.Message also can send to ground SITA receiving station by equipment such as very high frequency(VHF), high frequency, satellite receiver through airborne airborne vehicle communication addressing and reporting system (ACARS), is finally sent on the terminal computer of airline.
Digital flying quality securing component DFDAU(Digital Flight Data Acquisition Unit) receive the aircraft states data from airborne sensor or other equipment.The data acquisition subsystem of DFDAU is converted to digital signal by the aircraft states data of obtaining and broadcasts.Quick access recorder QAR(Quick Access Recorder) receive the aircraft states data of broadcast and store.Wherein, a part of data are stored in flight data recorder FDR(Flight Data Recorder),, in " black box ", so that after airborne vehicle generation unexpected incidents, for the relevant personnel, investigate and analyse.
Test platform of the present invention is used simulate signal to test airborne vehicle signal transmission apparatus to be tested.These simulate signals can be both the simulation status data of writing voluntarily according to airborne vehicle data standard; Also can be the true aircraft states data from quick access recorder QAR.Because the test environment on test platform of the present invention and the environment on airborne vehicle are also in full accord, so guaranteed the reliability of test.
For the test of airborne vehicle signal transmission apparatus, according to one embodiment of present invention, the simulate signal that test platform is generated accesses the input of airborne vehicle signal transmission apparatus to be tested, by in the DFDAU of the output access test platform of airborne vehicle signal transmission apparatus to be tested, the aircraft states data of simulate signal or aircraft states data or the control signal data of control signal data and DFDAU data acquisition subsystem broadcast of compare test platform for generating, just can show that whether the work of airborne vehicle signal transmission apparatus is normal.
The aircraft states supervisory control system ACMS(Aircraft Condition Monitoring System of DFDAU) also from the data acquisition subsystem of DFDAU, receive the aircraft states data of broadcast.ACMS monitors, collects, and records aircraft states data, and under certain trigger condition, exports predetermined aircraft states data, for navigational matters and the daily monitoring aircraft states of flight crew and performance.Because its data content and form can be changed by user, so be called message.
ACMS message is controlled and is produced by integrated application software.Message is by the threshold value of particular aircraft state parameter or the combinational logic of multinomial particular aircraft state parameter, and specific message triggering logic triggers.The ACMS message that manufacturer's design of ACMS and the message of test trigger logic generation is called basic message.A lot of basic messages have become civil aviation administrative department specified standard.The Boeing-737 NG aircraft of take is example, and the basic message of ACMS of its use approximately has more than 20.
By writing voluntarily ACMS message triggering logic, can produce customization message.Customization message can be so that those skilled in the art be no longer limited by the restriction of parameter in basic message, and can directly face tens thousand of aircraft states parameters.
For the test of airborne vehicle signal transmission apparatus, according to one embodiment of present invention, for airborne vehicle signal transmission apparatus to be tested, write customization message and trigger logic.After obtaining corresponding message, aircraft states data or control signal data by data acquisition subsystem broadcast in the aircraft states data in message or control signal data and DFDAU, just can show that whether the work of airborne vehicle signal transmission apparatus is normal.
Fig. 2 is according to an embodiment of the invention for testing the test platform architecture schematic diagram of airborne vehicle signal transmission apparatus.As shown in the figure, test platform comprises a digital aircraft states data acquisition component DFDAU.
According to one embodiment of present invention, the DFDAU of test platform of the present invention comprises the 2233000-8XX type that Teledyne company produces, the 967-0212-XXX type that HoneyWell company produces, or the 261303879-XXXX type of Sagem company production, wherein X.. represents concrete model.It will be appreciated by those skilled in the art that above model is only for giving an example.Test platform of the present invention also can be used other DFDAU.
In this article, " DFDAU ", except representing the DFDAU of above-mentioned concrete manufacturer production, also comprises and has device functionally similar with it.Particularly, DFDAU comprises data acquisition subsystem, and it is used for gathering real-time aircraft states data and the control signal from each transducer on airborne vehicle, and the data transaction of obtaining is become to digital signal.Alternatively, DFDAU also comprises data process subsystem, according to aircraft states data and the control signal data of data acquisition subsystem acquisition, realizes the function of specific logical process function and output.
According to one embodiment of present invention, there is part and the part of detecting that comprises DFDAU in the simulate signal that comprises of test platform.Part occurs simulate signal can be separated with the part of detecting that comprises DFDAU.
According to one embodiment of present invention, simulate signal generating unit is divided and is comprised input interface, simulate signal generation module and output interface.
The input interface that part occurs simulate signal is used for inputting aircraft states data.According to one embodiment of the present invention, input interface can be the various input equipments such as wired network interface, USB interface, radio network interface, blue tooth interface.The implementation that it will be appreciated by those skilled in the art that any data input all can be applicable to the input interface that part occurs simulate signal.
According to one embodiment of present invention, for testing the test data source of airborne vehicle signal transmission apparatus, comprise two kinds: a kind of is airborne vehicle running status emulated data or the control command data of writing according to airborne vehicle data standard, and another kind is aircraft states data or the control command data being stored on airborne quick access recorder QAR.
The generation of all kinds of events can be simulated and reproduce to the airborne vehicle running status emulated data that use is write according to airborne vehicle data standard or control command data better.Use is write emulated data voluntarily according to airborne vehicle data standard can provide any value of arbitrary signal and the combination between arbitrary signal, the generation of manual control particular event, thus improve testing efficiency.
Use is stored in the true environment that the True Data of aircraft states on airborne quick access recorder QAR or the True Data of control command can complete reproduction airborne vehicles, the situation during generation that can reproduce better fault.The situation existing in this area is that in some situation, the fault of airborne vehicle signal transmission apparatus is difficult to reproduce.While particularly testing separately each signal transmission apparatus, each signal transmission apparatus is all that work is good.But when a plurality of signal transmission apparatus are worked, owing to may having interference each other, the signal of transmission is understood distortion, thereby occurs the fault of signal transmission apparatus simultaneously.According to one embodiment of present invention, test platform of the present invention can be tested a plurality of airborne vehicle signal transmission apparatus simultaneously.Particularly in the situation that using QAR data, the signal environment of test platform of the present invention on can complete reproduction airborne vehicle, makes recurrence of failure become possibility, for location and the eliminating of fault creates favorable conditions.
According to one embodiment of present invention, from the test data of input interface by be linked into simulate signal generation module based on data highway system.These data/address buss comprise but are not limited to PXI bus, pci bus, PCIE bus, vxi bus etc.
According to one embodiment of present invention, for the signal environment on accurate reproduction airborne vehicle, the simulate signal generating unit of test platform of the present invention is divided and is comprised simulate signal generation module.Simulate signal generation module is according to the airborne vehicle running status emulated data of writing according to airborne vehicle data standard of input or control command data or the simulate signal that produces from airborne vehicle running state data or the control command data of QAR.The data that the airborne vehicle signal of the type of these simulate signals and characteristic and the collection of airborne vehicle transducer and other aircraft states assembly transmit are in full accord.
According to one embodiment of present invention, the simulate signal on test platform of the present invention relates to a plurality of systems on airborne vehicle, comprising: housing construction, engine, avionics system, Mechatronic Systems, hydraulic pressure, fuel oil, ring control, and control system etc.The signal kinds relating to is a lot, comprising: analog signal, discrete signal and aviation dedicated bus signal etc.; And these signals have the correlation on time and value.
According to one embodiment of present invention, there is the output interface of part by the simulate signal output of simulate signal generation module generation in simulate signal, and is suitable for simulate signal to be linked into airborne vehicle signal transmission apparatus.The output interface that part occurs simulate signal comprises polytype output interface, for example: switching value signal output interface, analog signal output interface, bus signals output interface etc.According to one embodiment of present invention, the output interface of every type all comprises a plurality of.Thus, test platform of the present invention can carry out the test of a plurality of airborne vehicle signal transmission apparatus simultaneously.
According to one embodiment of present invention, simulate signal generating unit is divided and is further comprised signal condition adapter.The simulate signal that signal condition adapter produces simulate signal generation module is further nursed one's health, such as means such as amplification or decay, isolation, multipath conversion, to guarantee quality and the stability of signal, meet for the high requirement of aircraft states airborne vehicle data-signal precision.
According to one embodiment of present invention, the part of detecting of test platform comprises wiring expansion equipment, DFDAU and display and/or printer.
The wiring expansion equipment of part of detecting is used for strengthening the alternative of input, forms the optional termination connecing that leads to.According to one embodiment of present invention, wiring expansion equipment comprises different subregions, and each subregion is for a kind of signal type.Thus, in wiring expansion equipment, the importing joint of various signals is very clear, and both convenient management, also conveniently realized the logical combination of various signals.
By the airborne vehicle running status emulated data of writing according to airborne vehicle data standard or control command data or the simulate signal that generates from airborne vehicle running state data or the control command data of QAR, after airborne vehicle signal transmission apparatus to be tested, be linked in wiring expansion equipment.Wiring expansion equipment is directly connected with DFDAU.On the other hand, as the airborne vehicle running status emulated data of writing according to airborne vehicle data standard of test data or control command data or from airborne vehicle running state data or the control command data of QAR, also via the input interface of DFDAU, be loaded in DFDAU.
According to one embodiment of present invention, the part of detecting of test platform comprises comparison module, its compare test platform is for aircraft states data or the control signal data of the simulate signal that generates, the test data being written into from the input interface of DFDAU, with aircraft states data or the control signal data of data acquisition subsystem broadcast in DFDAU, the test data accessing from wiring expanding unit.According to relatively whether the two unanimously just can show that whether the work of airborne vehicle signal transmission apparatus is normal.
According to one embodiment of present invention, when message triggering logic meets, the ACMS system of DFDAU can issue corresponding message.Utilize the message mechanism of DFDAU, also can determine that whether airborne vehicle signal transmission apparatus to be tested is working properly, thereby realize the test to airborne vehicle signal transmission apparatus to be tested.
According to one embodiment of present invention, the part of detecting of test platform comprises comparison module, its compare test platform is for aircraft states data or the control signal data of the simulate signal that generates, the test data being written into from the input interface of DFDAU, aircraft states data or control command data in the message producing with ACMS system, from the test data of wiring expanding unit access.According to relatively whether the two unanimously just can show that whether the work of airborne vehicle signal transmission apparatus is normal.
According to one embodiment of present invention, when existing multinomial aircraft states data or control data to compare, comparison module can automatically complete every aircraft states data or control aircraft states data corresponding in that data are broadcasted with DFDAU data acquisition subsystem or message or the comparison of control data, and the two different aircraft states data or control data is outputed to printer and/or the display of the part of detecting of test platform.
According to one embodiment of present invention, comparison module be on the part of detecting of test platform with wiring expansion equipment and the independent module of arranged side by side one of DFDAU.According to another embodiment of the invention, the function of comparison module is the software realization of the upper operation of DFDAU.
According to one embodiment of present invention, test platform comprises printer and/or display.Printer and/or display receive the output of DFDAU, by the output to DFDAU, decode, the message of DFDAU output is printed and/or is shown, for operating personnel's inspection and.According to one embodiment of present invention, the printer of test platform is virtual printer.
According to one embodiment of present invention, there is part and part of detecting and respectively comprise that a power supply is used to and provide the various piece of test platform that power supply is provided in the simulate signal of test platform.For example, 115V400Hz AC power.
Fig. 3 is simulate signal generation modular structure schematic diagram according to an embodiment of the invention.As shown in Figure 3, in the present embodiment, simulate signal generation module integration a plurality of simulate signal generating units.According to one embodiment of present invention, test data is inputted by the test data input interface of test platform, is connected to each simulate signal generating unit of simulate signal generation module under the control of bus control unit by data/address bus.
According to one embodiment of present invention, utilize the data acquisition processing system of PXI bus Open architecture, by various interface plate, on the platform of bussing technique, realize obtaining and controlling of signal.Wherein, PXI bus is opening, the modular instrument bus of a kind of high-performance low price of American National instrument company (NI) issue.It will be appreciated by those skilled in the art that PXI bus is only introduced and illustrated as an optional example.The data/address bus of other types also can be applied in the solution of the present invention.
According to one embodiment of present invention, the simulate signal generating unit of simulate signal generation module integration comprises discrete signal generating unit, voltage signal generating unit, analog signal generating unit and bus signals generating unit.
According to one embodiment of present invention, discrete signal generating unit comprises switching value signal generating unit; Analog signal generating unit comprises: alternating voltage ratio signal ACVR generating unit, and synchronizing signal SYNC generating unit; Bus signals generating unit comprises ARINC429 bus signals generating unit, and ARINC619 bus signals generating unit.
According to one embodiment of present invention, switching value generating unit comprises high density general-purpose relay matrix, and it is configured to the switching value signal of the hundreds of passages of emulation, and for example the general hilted broadsword list of high density is put relay card.According to one embodiment of present invention, switching value generating unit comprises digital switch array.
According to one embodiment of present invention, voltage signal generating unit comprises quiescent voltage output board card, emulation low-voltage direct LLDC(Low Level Direct Current) signal.According to one embodiment of present invention, the PXI-6704 multifunctional static Voltage-output board that voltage signal generating unit can WeiNI company be produced.
According to one embodiment of present invention, the substandard digital signal generating unit of ARINC429 comprises 429 bus boards.According to one embodiment of present invention, the ACX429 board that 429 bus boards can WeiAIM company be produced.
According to one embodiment of present invention, the substandard digital signal generating unit of ARINC619 comprises 619 bus boards.According to one embodiment of present invention, the ACX619 board that 619 bus boards can WeiAIM company be produced.
Fig. 4 is the structural representation of alternating voltage ratio signal ACVR signal generating unit according to an embodiment of the invention.As shown in Figure 4, ACVR signal generating unit 400 comprises ac voltage signal converting unit 401, and it is connected to power supply and the ac voltage signal of 115V400Hz is converted to the reference ac voltage signal of 26V400Hz; Digital signal branch road 402, it receives the digital signal from bus system; Modulator 403, it receives this ac voltage signal and digital signal, and this digital signal is converted to alternating voltage ratio signal; And output transformer 404, the alternating voltage ratio signal that its output generates.According to one embodiment of the present invention, ac voltage signal converting unit 401 is carried out frequency conversion and/or transformation by the ac voltage signal that power supply is provided, and produces needed with reference to ac voltage signal.According to one embodiment of present invention, ACVR signal generating unit is that a digital signal is to the D/A converting unit of alternating voltage ratio signal.
Fig. 5 is the structural representation of alternating voltage ratio signal ACVR signal generating unit according to another embodiment of the invention.As shown in Figure 5, ACVR signal generating unit 500 comprises ac voltage signal converting unit 501, and it produces 26V400Hz ac voltage signal by the ac voltage signal of power supply is carried out to frequency conversion and/or transformation.
ACVR signal generating unit 500 also comprises digital signal branch road 502, modulator 503, and output transformer 504.Digital signal branch road 502 further comprises bus adapter 5021, bus driving circuits 5022 and level shifting circuit 5023.Bus adapter 5021 is connected with external bus system, for obtaining the digital signal from external bus.Bus driving circuits 5022 is used for driving this digital signal.Level shifting circuit 5023 is adjusted into the required level of modulator 503 by the level of this digital signal.Modulator 503 receives with reference to ac voltage signal from ac voltage signal converting unit 501, according to the digital signal from data/address bus of being inputted by digital signal branch road, to carry out amplitude modulation with reference to ac voltage signal, generates corresponding alternating voltage ratio signal.
Output transformer 504 these alternating voltage ratio signals of output.
For example, on airborne vehicle redundant hydraulic force value by alternating voltage ratio signal indication.In order to realize the emulation to this signal, modulator 503 completes the modulation to reference voltage signal according to following formula:
Up（AC）=26（-0.49E-5Pressure+0.5985）；
Wherein, the effective value that Up(AC) represents ac voltage signal; Pressure represents the force value of input, and its value is 0-4000PSI.Thus, by ACVR signal generating unit 500, just can simulate redundant hydraulic force value alternating voltage ratio signal on the airborne vehicle within the scope of 0-4000PSI.
Fig. 6 is the schematic diagram of synchronous SYNC signal generating unit according to an embodiment of the invention.Synchronous SYNC signal is also referred to as shaft angle signal.As shown in Figure 6, SYNC signal generating unit comprises an ac voltage signal converting unit 601, the ac voltage signal that it is connected to power supply provides be converted to required two groups with reference to alternating voltage synchronizing signal; Digital signal branch road 602, it receives the digital signal from bus system; Modulator 603, it receives this alternating voltage synchronizing signal and digital signal, and this digital signal is converted to alternating voltage synchronizing signal; And output transformer 604, the synchronizing signal that its output generates.According to one embodiment of present invention, SYNC signal generating unit is that a digital signal is to the D/A converting unit of alternating voltage synchronizing signal.
Fig. 7 is the structural representation of the synchronous SYNC signal generating unit of alternating voltage according to another embodiment of the invention.As shown in Figure 7, SYNC signal generating unit 700 comprises ac voltage signal converting unit 701, and it is connected to power supply and the ac voltage signal of 115V400Hz is converted to the reference ac voltage signal of two groups of 28V400Hz.
SYNC signal generating unit 700 also comprises digital signal branch road 702 and modulator 703.Digital signal branch road 702 comprises bus adapter 7021, bus driving circuits 7022 and level shifting circuit 7023.Bus adapter 7021 is connected with external bus system, for obtaining the digital signal from external bus.Bus driving circuits 7022 is used for driving this digital signal.Level shifting circuit 7023 is adjusted into the required level of modulator 703 by the level of this digital signal.
The modulator 703 of SYNC signal generating unit comprises quadrant switch 7031, sin multiplier 7032 and cos multiplier 7033.Two groups of ac voltage signals enter respectively in sin multiplier 7032 and cos multiplier 7033 after quadrant switch 7031.From 2 bit representation of the digital signal of external bus the quadrant of angle, remainder represents the angle value of a 0-90 degree.Thus, the angle value that represents 0-360 degree.2 of digital signal are input in quadrant switch 7031, and remainder is input in sin multiplier 7032 and cos multiplier 7033.After sin multiplier 7032 and cos multiplier 7033, the phase difference between two groups of ac voltage signals has just represented this angle value.
SYNC signal generating unit 700 further comprises amplifier 7041 and 7042, and the output signal of sin multiplier 7032 and cos multiplier 7033 is carried out to power amplification; And output transformer 705, be used for exporting this synchronizing signal.Thus, realized the simulation of shaft angle signal.
According to one embodiment of present invention, said modulator can realize by four-quadrant multiplier.
According to one embodiment of present invention, the wiring expansion equipment of test platform part of detecting comprises patchboard.Fig. 8 is the structural representation of patchboard according to an embodiment of the invention.As shown in the figure, patchboard 800 comprises: patchboard panel 801 and a plurality of output interface 802-804 etc.According to one embodiment of present invention, patchboard 801 comprises a plurality of plug wire holes, the airborne vehicle signal transmission apparatus that each plug wire hole can certain type communication of pegging graft.Each output interface, corresponding to the signal of a type, is connected respectively to the input interface of the corresponding types of DFDAU.Each output interface comprises a plurality of lead-out terminals, and each lead-out terminal is corresponding with a plug wire hole of patchboard 801.
Fig. 9 is the schematic diagram of patchboard panel according to an embodiment of the invention.As shown in Figure 9, patchboard panel comprises a plurality of regions: aircraft type designator is selected region 901, analog signal region 902 and bus signals region 903.Alternatively, patchboard panel comprises switching value signal area.Aircraft type designator selects region 901 to be used to refer to the type of aircraft.
By dissimilar signal is placed into respectively in different regions, facilitate tester to manage test signal.And by patchboard, tester can complete the logical combination of the test signal of number of different types as required, the collection situation of aircraft states data-signal under emulation true environment.Patchboard panel further comprises power supply access region 904 and ground wire access region 905.
According to one embodiment of present invention, alternatively, patchboard comprises automatic switching module.From the input signal of patchboard panel 801, be linked into the input of automatic switching module, the output of automatic switching module is connected to a plurality of output interface 802-804.Automatic switching module is realized the automatic switchover between patchboard panel 801Ge road input signal and each lead-out terminal of a plurality of output interface 802-804.Utilize automatic switching module, the switching that operating personnel needn't be between each road signal of patchboard panel 801 manual operations, can greatly facilitate test operation.
According to another embodiment of the invention, wiring expansion equipment comprises automatic switching module, input interface and output interface.This input interface comprises a plurality of input terminals, and each input terminal can be connected communication with the airborne vehicle signal transmission apparatus of certain type.This output interface comprises a plurality of lead-out terminals, and each lead-out terminal is corresponding with an input terminal of described input interface.The automatic switching module of wiring expansion equipment, the automatic switchover being used between described patchboard panel Shang Ge road input signal and each lead-out terminal of described a plurality of output interfaces.
According to one embodiment of present invention, automatic switching module can comprise the switch matrix being arranged in rows and columns.All input signals form each row and all each row of lead-out terminal formation.A switch is set on the crosspoint of each row and row, thereby forms switch matrix.By these switches in control switch matrix, just can realize the automatic switchover between input signal and lead-out terminal.
According to one embodiment of present invention, alternatively, patchboard comprises universal instrument module and line scanning module.Because patchboard has comprised the connection line of the One's name is legion between input and output, these connection lines may lose efficacy due to a variety of causes.And be loaded down with trivial details and a require great effort job for the inspection of inefficacy circuit.Whether universal instrument module, by measuring electric current and the voltage of connection line, can check connection line to lose efficacy.Line scanning module can automatically switch between each connection line, thereby universal instrument module is connected in different connection lines.By universal instrument module and line scanning module, can realize easily " self check ", check out all inefficacy circuits.
In airborne vehicle, a lot of signal transmission apparatus are fixed on aircraft, extremely difficult dismounting, or the cost of dismounting is very high.Not after tested in the situation that, it is dismantled and may bring high cost.Test platform of the present invention can carry out miniaturization.Size after test platform miniaturization of the present invention is suitable with the volume of small handcart or suitcase.Therefore, can facilitate and on the airborne vehicle of address, complete the test to its signal transmission apparatus.
Figure 10 is the method flow diagram of test airborne vehicle signal transmission apparatus according to an embodiment of the invention.As shown in the figure, in method of testing 1000, in step 1010, for one or more signal transmission apparatus on airborne vehicle, determine signal type and quantity that these signal transmission apparatus are required.In step 1020, on test platform of the present invention, be written into the aircraft states data of writing voluntarily according to air communications standard or control command data or from aircraft states data or the control command data of QAR, wherein these aircraft states data comprise the data of all airborne vehicle signal transmission apparatus transmission to be tested; In step 1030, the output interface of test platform simulate signal radiating portion is connected to one end of one or more signal transmission apparatus to be tested, the other end of one or more signal transmission apparatus to be tested is connected in the wiring expansion equipment of test platform part of detecting; In step 1040, obtain aircraft states data or the control command data of the DFDAU broadcast of test platform part of detecting; In step 1050, determine that whether aircraft states data or the control command data of DFDAU broadcast of test platform part of detecting be consistent with the aircraft states data that are written into.If the two is consistent, in step 1060, judge that one or more signal transmission apparatus operating states are good.Otherwise, in step 1070, judge that one or more signal transmission apparatus may exist fault.
Figure 11 is the method flow diagram of test airborne vehicle signal transmission apparatus according to another embodiment of the invention.As shown in the figure, in method of testing 1100, in step 1110, for one or more signal transmission apparatus on airborne vehicle, determine that the message and this message that comprise the aircraft states data relevant with one or more signal transmission apparatus or control command data trigger logic.In step 1120, on test platform of the present invention, be written into the aircraft states data of writing voluntarily according to air communications standard or control command data or from aircraft states data or the control command data of QAR, wherein these aircraft states data comprise the data of all airborne vehicle signal transmission apparatus transmission to be tested; In step 1130, the output interface of test platform simulate signal radiating portion is connected to one end of one or more signal transmission apparatus to be tested, the other end of one or more signal transmission apparatus to be tested is connected in the wiring expansion equipment of test platform part of detecting; In step 1140, on the printer of test platform part of detecting and/or display, determine whether this message is correctly triggered and message in whether comprised required aircraft states data or control command data; In step 1150, determine that whether aircraft states data or the control command data in message, obtained be consistent with the aircraft states data that are written into or control command data.If the two is consistent, in step 1160, judge that one or more signal transmission apparatus operating states are good.Otherwise, in step 1170, judge that one or more signal transmission apparatus may exist fault.Alternatively, in step 1180, adjust this message and trigger logic, repeat above-mentioned steps.
Figure 12 is the method flow diagram of the test signal transmission equipment on test platform of the present invention according to one embodiment of present invention.As shown in figure 12, in method of testing 1200, in step 1210, on patchboard, select aircraft type designator, and determine required signal type and the quantity of one or more signal transmission apparatus to be tested.In step 1211, aircraft states data that being written into of part write voluntarily according to air communications standard or control command data occur test platform simulate signal or from aircraft states data or the control command data of QAR, wherein these aircraft states data comprise the data of all airborne vehicle signal transmission apparatus transmission to be tested.In step 1212, bus control unit reads in aircraft states data or control command data from input interface, and sends it to each signal generating unit in simulate signal generation module, produces respective switch amount signal, analog signal and/or bus signals.In step 1213, switching value signal, analog signal and/or bus signals are linked into a section of one or more airborne vehicle signal transmission apparatus to be tested; In step 1214, by the wiring expansion equipment of the signal access test platform part of detecting of airborne vehicle signal transmission apparatus output, input DFDAU.In step 1215, DFDAU receives after signal, and its inner ACMS system triggers logic according to the message that obtains particular aircraft status data or control command data, generates the message that comprises corresponding aircraft states data or control command data.In step 1216, determine that whether aircraft states data or the control command data in message, obtained be consistent with the aircraft states data that are written into or control command data.If the two is consistent, in step 1217, judge that one or more signal transmission apparatus operating states are good.Otherwise, in step 1218, judge that one or more signal transmission apparatus may exist fault.Alternatively, in step 1219, adjust this message and trigger logic, repeat above-mentioned steps.
Test platform of the present invention is complete has reproduced the data environment on airborne vehicle.On test platform of the present invention, carrying out test result is on all four with the test result of carrying out on actual airborne vehicle.Therefore, signal transmission apparatus completes after test on test platform of the present invention, can directly apply in airborne vehicle.Test platform of the present invention and method of testing have realized the test fast and accurately to signal transmission apparatus.Thus, operating personnel can monitor the state of airborne vehicle more accurately, guarantee the safety of flight.
Above-described embodiment is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill in relevant technologies field, without departing from the present invention, can also make a variety of changes and modification, therefore, all technical schemes that are equal to also should belong to category disclosed by the invention.
Claims (28)
1. a test platform for the airborne vehicle signal transmission apparatus based on DFDAU, comprising:
Simulate signal generation part, it comprises:
Input interface, it receives test data;
Simulate signal generation module, it produces simulate signal according to described test data; And
Output interface, it is suitable for the one end being connected with one or more signal transmission apparatus to be tested, exports described simulate signal; And
Part of detecting, it comprises:
Wiring expanding unit, it is used for forming gateable termination, is suitable for being connected with the other end of described one or more signal transmission apparatus to be tested, receives described simulate signal;
DFDAU, it receives the simulate signal from described wiring expansion equipment; And
Comparison module, it relatively inputs to the test data of the described test data of input interface and the simulate signal based on from described wiring expansion equipment.
2. test platform according to claim 1, wherein said test data comprises aircraft states data or the control command data of writing according to air communications standard.
3. test platform according to claim 1, wherein said test data comprises aircraft states data or the control command data from airborne vehicle quick access recorder QAR.
4. according to the test platform described in claim 2 or 3, wherein said DFDAU is converted to aircraft states data or control command data broadcast by the simulate signal from described wiring expansion equipment; Wherein said comparison module relatively inputs to the described test data of input interface and aircraft states data or the control command data of DFDAU broadcast.
5. according to the test platform described in claim 2 or 3, wherein said DFDAU is converted to the simulate signal from described wiring expansion equipment aircraft states data or control command data and triggers logic according to message and generates the message relevant with airborne vehicle signal transmission apparatus to be tested; Wherein said comparison module relatively inputs to aircraft states data or the control command data in the described test data of the input interface message relevant with airborne vehicle signal transmission apparatus described and to be tested.
6. test platform according to claim 1, wherein simulate signal generation module comprises discrete signal generating unit, voltage signal generating unit, analog signal generating unit and/or bus signals generating unit; Wherein said input interface is connected to various discrete signal generating unit, voltage signal generating unit, analog signal generating unit and/or bus signals generating unit by bus system.
7. test platform according to claim 6, wherein discrete signal generating unit comprises switching value signal generating unit; Wherein said switching value signal generating unit comprises relay array.
8. test platform according to claim 6, wherein discrete signal generating unit comprises switching value signal generating unit; Wherein said switching value signal generating unit comprises switch arrays.
9. test platform according to claim 6, wherein analog signal generating unit comprises alternating voltage ratio signal ACVR generating unit, described ACVR signal generating unit comprises ac voltage signal converting unit, and it is connected to power supply and produces the ac voltage signal with required effective value and frequency; Digital signal branch road, it receives the digital signal from described bus system; Modulator, it receives described ac voltage signal and digital signal, and described digital signal is converted to alternating voltage ratio signal; And output transformer, it exports described alternating voltage ratio signal.
10. test platform according to claim 9, wherein said digital signal branch road comprises bus adapter, it is connected with described portion bus system, for obtaining the digital signal from external bus; Bus driving circuits, it is used for driving described digital signal; And level shifting circuit, its level by this digital signal is adjusted into the required level of described modulator.
11. test platforms according to claim 9, wherein said modulator, according to the digital signal from described bus system by described digital signal branch road input, is modulated and is generated corresponding alternating voltage ratio signal the effective value of described ac voltage signal.
12. test platforms according to claim 6, wherein analog signal generating unit comprises synchronizing signal SYNC generating unit, described SYNC signal generating unit comprises ac voltage signal converting unit, and it is connected to power supply and produces the ac voltage signal of required effective value and frequency; Digital signal branch road, it receives the digital signal from bus system; Modulator, it receives this ac voltage signal and digital signal, and this digital signal is converted to alternating voltage synchronizing signal; And output transformer, it exports described alternating voltage synchronizing signal.
13. test platforms according to claim 6, wherein analog signal generating unit comprises synchronizing signal SYNC generating unit, described synchronizing signal SYNC signal generating unit comprises:
Ac voltage signal converting unit, it is connected to power supply and produces two groups of ac voltage signals;
Digital signal branch road, it comprises:
Bus adapter, it is connected with external bus system, for obtaining the digital signal from external bus;
Bus driving circuits, it is used for driving this digital signal; And
Level shifting circuit, its level by this digital signal is adjusted into required level;
Modulator, it comprises:
Quadrant switch;
Sin multiplier; And
Cos multiplier,
Wherein said two groups of ac voltage signals enter respectively described sin multiplier and described cos multiplier after described quadrant switch, and this digital signal is converted to two groups of ac voltage signals that differ a phase bit;
The first amplifier and the second amplifier, it is used for the output signal of sin multiplier and cos multiplier to carry out power amplification; And
Output transformer, it is used for exporting described two groups of ac voltage signals that differ a phase bit.
14. test platforms according to claim 6, wherein said bus signals generating unit comprises ARINC429 bus signals generating unit and ARINC629 bus signals generating unit.
15. test platforms according to claim 6, further comprise signal condition adapter, and the simulate signal that described signal generating module is produced is nursed one's health.
16. test platforms according to claim 1, described wiring expansion equipment comprises patchboard, described patchboard comprises: patchboard panel; And a plurality of output interfaces;
Wherein, patchboard panel comprises a plurality of plug wire holes, and each plug wire hole can be pegged graft and communicate by letter with described simulate signal generation module Yi road output signal;
Wherein, each output interface, corresponding to the signal of a type, is connected respectively to the input interface of the corresponding types of DFDAU;
Wherein, each output interface comprises a plurality of lead-out terminals, and each lead-out terminal is corresponding with a plug wire hole of described patchboard panel.
17. test platforms according to claim 16, described patchboard panel comprises: analog signal region, bus signals region, power supply access region and ground wire access region.
18. test platforms according to claim 16, described patchboard comprises automatic switching module, it is used for the automatic switchover between described patchboard panel Shang Ge road input signal and each lead-out terminal of described a plurality of output interfaces.
19. test platforms according to claim 1, wherein said wiring expansion equipment comprises input interface and output interface; Described input interface comprises a plurality of input terminals, and each input terminal can be pegged graft and communicate by letter with described simulate signal generation module Yi road output signal; Described output interface comprises a plurality of lead-out terminals, and each lead-out terminal is corresponding with a plug wire hole of described patchboard panel;
Described wiring expansion equipment comprises automatic switching module, and it is used for the automatic switchover between each input terminal of described input interface and each lead-out terminal of described a plurality of output interfaces.
20. according to the test platform described in claim 18 or 19, and wherein said automatic switching module comprises the switch matrix being arranged in rows and columns.
21. test platforms according to claim 1, wherein said wiring expansion equipment comprises universal instrument module and line scanning module; Whether wherein said universal instrument module, by measuring electric current and the voltage of connection line, can check connection line to lose efficacy; Wherein said line scanning module can automatically switch between each connection line, thereby universal instrument module is connected in different connection lines.
The method of testing of 22. 1 kinds of airborne vehicle signal transmission apparatus, comprising:
One end of one or more signal transmission apparatus to be tested is connected to the output interface that part occurs at simulate signal as described in the test platform as described in claim 1-21, the other end of one or more signal transmission apparatus to be tested is connected in the wiring expansion equipment of part of detecting as described in the test platform as described in claim 1-21;
On the test platform as described in claim 1-21, be written into test data;
According to described test data, produce simulate signal;
Reception is from the simulate signal of described wiring expansion equipment;
Relatively input to the test data of the described test data of input interface and the simulate signal based on from described wiring expansion equipment.
23. method of testings according to claim 22, wherein said test data comprises aircraft states data or the control command data of writing according to air communications standard.
24. method of testings according to claim 22, wherein said test data comprises aircraft states data or the control command data from airborne vehicle quick access recorder QAR.
25. according to the method for testing described in claim 23 and 24, and wherein said DFDAU is converted to aircraft states data or control command data broadcast by the simulate signal from described wiring expansion equipment; Wherein said comparison step comprises: relatively input to the described test data of input interface and aircraft states data or the control command data of DFDAU broadcast.
26. according to the method for testing described in claim 23 and 24, further comprises: wherein said DFDAU is converted to the simulate signal from described wiring expansion equipment aircraft states data or control command data and triggers logic according to message and generates the message relevant with airborne vehicle signal transmission apparatus to be tested; Wherein said comparison step comprises aircraft states data or the control command data relatively inputing in the described test data of the input interface message relevant with airborne vehicle signal transmission apparatus described and to be tested.
27. method of testings according to claim 22, further comprise: utilize bus control unit from input interface, to read in aircraft states data or control command data, and send it to each signal generating unit in described simulate signal generation module, produce respective switch amount signal, analog signal and/or bus signals.
28. method of testings according to claim 27, further comprise: switching value signal, analog signal and/or the bus signals that each signal generating unit is produced is through the conditioning of conditioning adapter.
Priority Applications (10)
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| CN201310191378.XA CN104184525B (en) | 2013-05-22 | 2013-05-22 | Digital-flight-data-acquisition-unit-based test platform and test method of signal transmission device |
| CA2852080A CA2852080C (en) | 2013-05-22 | 2014-05-21 | Test apparatus and test method based on dfdau |
| US14/284,017 US9639997B2 (en) | 2013-05-22 | 2014-05-21 | Test apparatus and test method based on DFDAU |
| SG10201402576SA SG10201402576SA (en) | 2013-05-22 | 2014-05-22 | Test Apparatus and Test Method based on DFDAU |
| AU2014202810A AU2014202810B2 (en) | 2013-05-22 | 2014-05-22 | Test apparatus and test method based on dfdau |
| JP2014106166A JP6223277B2 (en) | 2013-05-22 | 2014-05-22 | Test apparatus and test method based on DFDAU |
| TW103117845A TWI616377B (en) | 2013-05-22 | 2014-05-22 | Test appartus based on digital flight data acquisition unit (dfdau) |
| EP14169533.8A EP2818953B1 (en) | 2013-05-22 | 2014-05-22 | Test apparatus and test method based on DFDAU |
| KR1020140061831A KR102052219B1 (en) | 2013-05-22 | 2014-05-22 | Test apparatus and test method based on dfdau |
| HK15100979.8A HK1200546A1 (en) | 2013-05-22 | 2015-01-28 | Test apparatus and test method based on dfdau dfdau |
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| CN201310191378.XA CN104184525B (en) | 2013-05-22 | 2013-05-22 | Digital-flight-data-acquisition-unit-based test platform and test method of signal transmission device |
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Also Published As
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| AU2014202810B2 (en) | 2018-02-08 |
| AU2014202810A1 (en) | 2014-12-11 |
| CN104184525B (en) | 2017-04-12 |
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