CN106501650A - The method and its system of detection electromagnetic interference - Google Patents
The method and its system of detection electromagnetic interference Download PDFInfo
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- CN106501650A CN106501650A CN201611051284.2A CN201611051284A CN106501650A CN 106501650 A CN106501650 A CN 106501650A CN 201611051284 A CN201611051284 A CN 201611051284A CN 106501650 A CN106501650 A CN 106501650A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
Abstract
Present disclose provides a kind of test system of detection civil aircraft portable electric appts electromagnetic interference, including：Control unit, is configured to control unit in the system to implement the test of electromagnetic interference；Transmitter unit, is configured to respond to described control unit, generates and launches test signal；And receiving unit, described control unit is configured to respond to, the test signal is measured；Wherein described control unit is additionally configured to process the data that measurement is obtained and analyzed.Additionally, the method that the disclosure additionally provides detection civil aircraft portable electric appts electromagnetic interference.
Description
Technical field
Embodiment of the disclosure relates generally to Electro Magnetic Compatibility (EMC) technical field of measurement and test in aircraft, specifically, relates to
And a kind of method and its system for detecting the electromagnetic interference of portable electric appts in civil aircraft.
Background technology
2007, RTCA (Radio Technical Commission for
Aeronautics, RTCA) promulgate standard DO-307《Aircraft Design and Certification for
Portable Electronic Device(PED)Tolerance》, it is proposed that civil aircraft allows to set using portable electronic
Qianmen coupling (Front-door Coupling) machine upper ground surface test of standby (Portable Electronic Device, PED)
Verification method, carries out Electromagnetic Interference Test to the communications such as MB, VHF, VOR, LOC, TCAS, GPS, navigation system.The method is to adopt
In the machine of being used in, diverse location is placed transmitting antenna to simulate unintentional emission (the Non Intentional Radiated of PED
Emissions, NIRE), transmitting antenna is obtained to the interference path loss between communication, navigation neceiver prevention at radio-frequency port by measurement
(Interfere Path Loss, IPL), determines the potential electromagnetic interference that PED brings to airborne communication, navigation system with this,
That is Qianmen coupled interference.In the standard, it is proposed that the IPL method of testings (shown in Fig. 1) of recommendation, including to test equipment/instrument
The requirement of device, but these equipment/instruments are only capable of realizing simplest test function, and be manual test, it is difficult to meet substantial amounts of
Testing requirement.For especially for the civil aircraft for newly grinding, manual test at least needs 3 time-of-weeks just complete all of survey
Examination and analysis work, waste time and energy, while being likely to produce impact to the seaworthiness checking progress of aircraft.
2010, European civil aviation equipment organized (European Organization for Civil Aviation
Equipment, EUROCAE) promulgate standard ED-130《Guidance for The Use of Portable
Electronic Devices(PEDS)on Board Aircraft》, it is proposed that civil aircraft allows the back door coupling using PED
(Back-door Coupling) machine upper ground surface verification experimental verification method is closed, the method is utilized in diverse location in machine and places transmitting
Antenna is simulating the intentional emission (Intentional Radiated Emissions, IRE) of PED, qualitative examination airborne equipment
Working condition.In the standard, the requirement to test equipment/instrument when testing on machine, but these equipment/instrument are also proposed
Device is only capable of completing qualitatively test mission.For the civil aircraft for newly grinding, before the test method is more suitable for Airworthiness Certification
Airworthiness compliance test because the method is by directly checking the working condition of mobile system/equipment judging whether to deposit
In electromagnetic interference, the realization of system/device function is depended on, but in the development process of aircraft, in most cases these are
The function of system/equipment is simultaneously imperfect, and the continuous upgrading for software and hardware will be continued for the latter stage that develops, if at this moment
It was found that electromagnetic interference problem, just may require that the plenty of time is rectified and improved, so as to affect the Airworthiness Certification progress of aircraft.
Need a kind of efficient test system to detect the electromagnetic interference of portable electric appts in civil aircraft for this.
Content of the invention
Generally, embodiment of the disclosure proposes the system and method for detection electromagnetic interference.
The first aspect of the disclosure provides a kind of system of detection civil aircraft portable electric appts electromagnetic interference, bag
Include：Control unit, is configured to control unit in the system to implement the test of electromagnetic interference；Transmitter unit, quilt
It is configured in response to described control unit, generates and launch test signal；And receiving unit, it is configured to respond to the control
Unit processed, measures the test signal；Wherein described control unit be additionally configured to the data that obtain of measurement are carried out processing and
Analysis.
In certain embodiments, the transmitter unit includes：Signal generator, is configured to respond to the control single
Unit, generates the test signal with specific waveforms and frequency；Power amplifier, is configured to respond to described control unit, right
The test signal implements power amplification；And transmitting antenna, it is configured to launch the test signal.
In certain embodiments, the receiving unit includes：Spectrum analyzer, is configured in test lead measurement test
Value；At least one of and following module：- interference path loss (IPL) test module；- Intended radiation launches direct-coupling
Interference airborne equipment (IRU) test module；- Intended radiation is emitted through hole coupling interference airborne equipment (IRC) test module.
In certain embodiments, the IPL tests module includes：Multiple airborne antennas, are configured to receive the test
Signal；Multichannel time-division band filter, the test signal difference for being configured to receive on the plurality of airborne antenna are defeated
Enter to the spectrum analyzer；Wherein, the test value includes the work(of the test signal that the airborne antenna termination is received
Rate value.
In certain embodiments, the IRU tests module includes：At least one field intensity probe, each described field intensity probe
It is configured to measure the field intensity in a space；Field intensity agitator, is configured to stir residing for each described field intensity probe
Magnetic distribution in space；Processor unit, is configured to the measured value and is input into the spectrum analyzer；Wherein,
The test value includes the maximum field intensity values that each described field intensity probe is measured.
In certain embodiments, the IRC tests module includes：At least one current probe, each described current probe
It is configured to measure the faradic current in a cable；Variable connector, is configured at least one current probe
The faradic current for measuring is separately input into the spectrum analyzer；Wherein, the test value includes what the current probe was measured
Faradism flow valuve.
In certain embodiments, described control unit includes：The control program of control computer integrated system, by described
Control program is done either automatically or manually the test of every electromagnetic interference；Hub, is connected to the transmitter unit and the reception
Unit, to realize control and communication between described control unit and the transmitter unit and the receiving unit.
The second aspect of the disclosure provides a kind of method of detection IPL, including：Test signal is generated and amplifies, wherein
The test signal is the continuous wave signal with characteristic frequency；The test signal is launched by transmitting antenna；By airborne
Antenna receives the test signal；By multichannel time-division band filter, the test letter received on the airborne antenna
Number it is conducted on spectrum analyzer, to obtain the power level of the test signal received on the airborne antenna；Based on described
The power level of the test signal received on airborne antenna launches the difference of the power level of the test signal with transmitting antenna
Value, obtains IPL.
The third aspect of the disclosure provides a kind of method of detection IRU, including：Field intensity probe is respectively placed in sky to be measured
In；Test signal is generated and amplifies, wherein described test signal is continuous wave signal and the pulse signal with characteristic frequency；
The test signal is launched by transmitting antenna；The electromagnetic field point in space residing for field intensity probe is stirred by field intensity agitator
Cloth；By the maximum field strength in the field intensity probe measurement space and it is input into spectrum analyzer；Test described in normalized
Signal and the maximum field strength, then the maximum field strength ratio such as is carried out by portable electric appts Intended radiation actual strength put
Greatly, analysis produces the probability of electromagnetic interference.
The fourth aspect of the disclosure provides a kind of method of detection IRC, including：Current probe is placed in cable under test
On；Test signal is generated and amplifies, wherein described test signal is continuous wave signal and the pulse signal with characteristic frequency；Logical
Cross transmitting antenna and launch the test signal；The sense generated by test signal described in current probe measurement cable induction
Induced current；Spectrum analyzer is separately input into the faradic current that each current probe is measured by variable connector；At normalization
The test signal and the faradism flow valuve is managed, then the faradism flow valuve is pressed portable electric appts Intended radiation reality
Intensity carries out waiting than amplifying, and analysis produces the probability of electromagnetic interference.
A kind of method of detection civil aircraft portable electric appts electromagnetic interference, bag is provided in terms of the 5th of the disclosure
Include according at least one in arbitrary methods described in the second to fourth aspect.
In certain embodiments, the amplification test signal includes：Based on the reflection power measured at directional coupler end
With the value of output, determine that the test signal needs the degree being exaggerated.
It should be appreciated that the content described in Summary is not intended to limit the crucial of the embodiment of the present disclosure or weight
Feature is wanted, also non-for limiting the scope of the present disclosure.The further feature of the disclosure will be easy to understand by description below.
Description of the drawings
By reading the detailed description made by non-limiting example made with reference to the following drawings, the disclosure other
Feature, objects and advantages will become more apparent：
Fig. 1 shows a kind of IPL test schematic diagrams；
Fig. 2 shows the schematic diagram according to the IPL of disclosure definition；
Fig. 3 shows the system schematic of the detection electromagnetic interference of some embodiments according to the disclosure；
Fig. 4 shows the module diagram of the transmitter unit of some embodiments according to the disclosure；
Fig. 5 shows that the IPL of some embodiments according to the disclosure tests the module diagram of receiving portion；
Fig. 6 gives the multichannel time-division band filter with 16 passages of some embodiments according to the disclosure and penetrates
The theory diagram of frequency channel module；
Fig. 7 gives the single receiving channel theory diagram of some embodiments according to the disclosure；
Fig. 8 shows that the IRU of some embodiments according to the disclosure tests the module diagram of receiving portion；
Fig. 9 shows the schematic diagram of the field intensity agitator of some embodiments according to the disclosure；
Figure 10 shows the motor of some embodiments according to the disclosure and its principle schematic of control system；
Figure 11 shows that the IRC of some embodiments according to the disclosure tests the module diagram of receiving portion；
Figure 12 shows the schematic diagram of the variable connector of some embodiments according to the disclosure；
Figure 13 shows the system connection diagram of the IPL tests of some embodiments according to the disclosure；
Figure 14 shows the system connection diagram of the IRU tests of some embodiments according to the disclosure；And
Figure 15 shows the system connection diagram of the IRC tests of some embodiments according to the disclosure.
In all of the figs, same or similar reference number represents same or similar element.
Specific embodiment
In the specific descriptions of following preferred embodiment, reference is constituted the accompanying drawing appended by a disclosure part.Institute
Attached accompanying drawing has been illustrated by way of example the specific embodiment that can realize the disclosure.The embodiment of example is not intended as
All embodiments of the limit according to the disclosure.It is appreciated that on the premise of without departing from the scope of the present disclosure, it is possible to use other
Embodiment, it is also possible to carry out the modification of structural or logicality.Therefore, specific descriptions below are simultaneously nonrestrictive, and this
Scope of disclosure is defined by the claims appended hereto.Although additionally, describing the step of method in description in a particular order
Suddenly, but this does not require that or implies and must execute these operations according to the particular order, or have to carry out whole institutes
The operation that shows could realize desired result, conversely, the step of describing can change execution sequence.Additionally or alternatively, may be used
To omit some steps, multiple steps are merged into a step and is executed, and/or a step is decomposed into multiple steps and held
OK.
It relates to a kind of system and method for detection electromagnetic interference aim to solve the problem that above-mentioned weak point.By automatic
Work efficiency of the detection mode of change to improve Qianmen coupled interference test and analyze；Detection by quantitative test and automatization
Mode, can analyze potential back door coupled interference in aircraft development initial stage, and improve the work efficiency of test and analysis.
The technical scheme in the disclosure is understood for the ease of reader, and first following term is explained：
Portable electric appts (Portable Electronic Device, PED)：Refer to and taken by passenger or crew
The portable electronic devices of band, these equipment are operated by carrier, to realize communicating, entertain, data processing and other application, such as
Mobile phone, CD player, notebook computer, Pad etc..
Intentional emission (Intentional Radiated Emissions, IRE)：Refer to that the radiation of PED operating frequencies is sent out
Penetrate, such as WIFI signal of the working signal of mobile phone, notebook computer etc..
Unintentional emission (Non Intentional Radiated Emissions, NIRE)：Refer to outside PED operating frequencies
Radiation-emitting.It is characterized in that radiant power is low, bandwidth.Due to having very high sensitivity in operation of receiver frequency band, because
This is although its power is very low, but still can interfere with airboarne receiver.
Qianmen couples (Front-door Coupling)：Refer to that the radio-frequency (RF) energy of PED unintentional emissions passes through aircraft cabin crack between a door and its frame
The perforates such as gap, porthole enter receiver around airborne antenna is incident upon by airborne antenna, when the energy exceedes receiver susceptivity thresholding
When, interference will be produced to receiver.These airboarne receivers include beacon (MB), VOR/LOC, VHF communication, TCAS, GPS
Deng.
Back door couples (Back-door Coupling)：Refer to the radio-frequency (RF) energy direct-coupling jammer of PED intentional emissions
Load equipment is coupled to airborne equipment interconnection cable, so as to disturb airborne equipment.
Interference path is lost (Interfere Path Loss, IPL)：As shown in Fig. 2 referring to transmitter terminal to receiver
The power attenuation at end：
IPL computing formula are：IPL=PTr(A)-PRec(B)
In formula,
PTr(A)For the transmission power of A points, unit dBm；
PRec(B)For the receiving power of B points, unit dBm.
IPL computing formula with gain antenna are：IPL=PTr(A)-PRec(c)+GAmp
In formula,
PRec(C)For the receiving power at C points, unit dBm；
Power gains of the G for active antenna, unit dBm.
IRU(Intentional Radiated emissions direct coupling to equipment
Unit)：Intended radiation transmitting direct-coupling interference airborne equipment.
IRC(Intentional Radiated emissions coupling to equipment input and
Cable)：Intended radiation is emitted through hole coupling interference airborne equipment.
The system and corresponding detection electromagnetism that below will be described in detail a kind of detection electromagnetic interference that the disclosure is proposed is done
The method that disturbs.
A kind of system of detection electromagnetic interference that the disclosure is proposed can complete the coupled interference test of PED Qianmens and T-
PED (Transmitting Portable Electronic Device) back door coupled interference quantitative test.This test system reality
Existing PED Qianmens coupled interference test can complete the content of the test described in RTCA DO-307, i.e. IPL is tested, its method with
It is consistent but in hgher efficiency that standard DO-307 is described；And coupled interference test in T-PED back doors is then based on ED-130 and SAE
ARP5583, using the method for radiation level contracting ratio, on the premise of measuring accuracy is guaranteed, reduces power of the test to power amplifier
Require, also reduce the gain requirement to active antenna.Meanwhile, by the multichannel time-division band filter newly developed, multichannel
Switch and field intensity agitator, it is achieved that the Aulomatizeted Detect of detecting system, reduce detection workload, improve detection efficiency.
Test system composition schematic diagram is as shown in Figure 3.
As shown in figure 3, the system 300 of detection electromagnetic interference includes：Control unit 302, transmitter unit 304, receiving unit
306.
Control unit 302 includes：Control computer and hub, hub is by general purpose interface bus (GPIB) or netting twine
(LAN) respectively with power amplifier, signal generator, control computer, processor unit, field intensity agitator, multichannel time-division
The connection of band filter, variable connector and spectrum analyzer.The software of whole control system is integrated with control unit 302,
Collection, storage, Treatment Analysis and the output that automatic test and test data are realized by the software and control computer.
Mainly constituted with general test instrunment in transmitter unit 304, including：Signal generator, power amplifier, send out
Antenna and radio-frequency cable etc. is penetrated, its intermediate power amplifier is connected with signal generator and transmitting antenna by radio-frequency cable respectively.
Can selectively be included according to the difference for realizing function in receiving unit 306 again：IPL part of detecting 306-1,
IRU part of detecting 306-2 and IRC part of detecting 306-3, wherein field intensity agitator, multichannel time-division band filter and multichannel
Switch as newly grinding equipment.
In IPL part of detecting 306-1, multichannel time-division band filter by radio-frequency cable be connected to airborne antenna and
Spectrum analyzer.In IRU part of detecting 306-2, field intensity probe is connected to processor unit, and processor list by optical cable
Unit is connected to spectrum analyzer by radio-frequency cable.In IRC part of detecting 306-3, variable connector is connected by radio-frequency cable
To current probe and spectrum analyzer.
We introduce the concrete composition of unit respectively below.
Fig. 4 shows the module map of the transmitter unit of some embodiments according to the disclosure.As shown in figure 4, transmitter unit
304 include transmitting antenna, power amplifier, signal generator, directional coupler, energy meter and radio-frequency cable.
The system integration of transmitter unit requires that covering PED Qianmen coupling measurements and T-PED back doors couples low level test
Frequency range (50MHz-6GHz), and need considering power amplifier operation frequency range and amplifying power, transmitting antenna
Working frequency range and gain, and the attenuation compared with long RF cable.Consider that test frequency range is wider, single set signal source, power amplifier and
Antenna can not be covered, and therefore can adopt many sets in some schemes, to realize the test of different frequency range.Tool is shown in Fig. 4
There is the example of two sets of signal sources, power amplifier and antennas, it is possible to understand that more set signal sources, power amplifier and antenna can also be included.
Signal generator is connected with control unit by GPIB/LAN, so as to give birth in response to control computer in control unit
Into instruction, generate the test signal with specific waveforms and frequency.Power amplifier is connected with control unit by GPIB/LAN
Connect, so as to the instruction generated in response to control computer in control unit, power amplification is implemented to test signal.Signal generator
Test signal is sent to power amplifier by radio-frequency cable, amplified test signal again by radio-frequency cable be input into
Directional coupler, then directional coupler test signal is sent to transmitting antenna by radio-frequency cable.Set on directional coupler
There is energy meter, with the reflection power that confirms to measure on directional coupler and output.The energy meter passes through data wire (for example
USB connecting lines) it is connected with control computer, so as to the reflection power and output that measure are input into control computer.Control
Computer processed needs the desired value of transmission power to correct work(according to the reflection power and output and transmitting antenna that measure
The degree that rate amplifier amplifies to measurement signal, so that the test signal that launches on transmitting antenna meets test request.
Receiving unit 306 in the system 300 of detection electromagnetic interference includes IPL test receiving portion 306-1, IRU tests
Receiving portion 306-2 and IRC test receiving portions 306-3, are respectively described as follows：
Fig. 5 shows that IPL tests the schematic diagram of receiving portion 306-1.
IPL tests receiving portion 306-1 includes multichannel time-division band filter and multiple airborne antennas.The multichannel time-division
The test signal received on the airborne antenna that band filter is configured in multiple airborne antennas is input into frequency spectrum
Analyser.Airborne antenna is configured to receive the test signal that transmitting antenna sends.Control computer by GPIB/HUB with many
Passage time-division band filter connects, and chooses the signal input received in different airborne antennas to frequency spectrum point to control wave filter
Analyzer.The performance number of the test signal that spectrum analyzer is received the airborne antenna termination being selected by GPIB/HUB feeds back to
Control computer.IPL test receiving portion 306-1 can complete to airborne antenna MB, VOR/LOC, VHF Com, GS, DME,
The path loss test of ATC, TCAS, GPS and SATCOM.
Multichannel time-division band filter is that the disclosure newly grinds equipment.Multichannel time-division band filter possesses machine to be measured
The automatic switching function of antenna is carried, each passage can be divided into band gain again and without two subchannels of gain.Multichannel time-division band
The function of bandpass filter is the test signal for receiving different airborne antennas, and frequency spectrum is sent in timesharing under the control of control computer
Instrument is tested.Channelizing reception is carried out using corresponding wave filter in each receiving channel, can suppress to disturb, improved and receive
Sensitivity.In order to reduce the noise coefficient of multi-channel filter, each passage has preamplifier.In order to avoid big signal hinders
Plug, preamplifier access passage by switching.
Fig. 6 exemplarily gives the original in the multichannel time-division band filter radio-frequency channel module with 16 passages
Reason block diagram, wherein 16 passages correspond respectively to 16 airborne receiving antennas, and 16 passages switch cascade using two-stage SP4T
Scheme.In a specific embodiment, the incoming frequency characteristic of each passage is designed as shown in Table-1.
Table -1
| Channel number | Reception antenna | Receive signal frequency |
| Passage 1 | MB | 75MHz |
| Passage 2 | ILS Localizer | 108.1-111.95MHz |
| Passage 3 | VOR | 108-117.95MHz |
| Passage 4 | VHF1 | 118-137MHz |
| Passage 5 | VHF2 | 118-137MHz |
| Passage 6 | VHF3 | 118-137MHz |
| Passage 7 | ILS Glide Slope | 328.6-335.4MHz |
| Passage 8 | DME1 | 962-1213MHz |
| Passage 9 | DME2 | 962-1213MHz |
| Passage 10 | ATC1 | 1030MHz |
| Passage 11 | ATC2 | 1030MHz |
| Passage 12 | TCAS | 1090MHz |
| Passage 13 | GNSS L5/E5 | 1164-1215MHz |
| Passage 14 | SATCOM | 1530-1559MHz |
| Passage 15 | GNSS L1 | 1559-1610MHz |
| Passage 16 | Standby | Broadband |
In each receiving channel, preposition low-noise amplifier (LNA) is accessed by one group of SP2T (SPDT) switch, is such as schemed
Shown in 7.In a specific embodiment, HMC284AMS8G chip of the SP2T switches from Hittite companies.Preamplifier
RAM-8A+ and PMA-545G1+ from MINI companies is covered each by the low side of working frequency range and high-end.Filter in each passage
Ripple device is the core devices of this equipment, determines the selection characteristic of each passage.Passage 1-7 is relatively low due to operating frequency, wave filter
Designed using lumped circuit；Passage 8-13 is of a relatively high due to operating frequency, and wave filter adopts micro-strip form design；Passage
The 14 and 15 SAW filter chip B69812N1587A436 for selecting EPCOS companies；Passage 16 does not design wave filter.
In a specific embodiment, HMC241ALP3E of the SP4T switches from Hittite companies.
Additionally, when accessed antenna is active antenna, in addition it is also necessary to increase Bias T circuits in input and power to antenna.
Fig. 8 shows that IRU tests the schematic diagram of receiving portion 306-2.
IRU tests receiving portion 306-2 includes：Processor unit, spectrum analyzer (or have identical with spectrum analyzer
The field intensity monitor of effect), field intensity probe, field intensity agitator.Field intensity agitator is connected with control computer through GPIB/LAN, from
And the magnetic distribution in each space residing for the field intensity probe is stirred in the instruction in response to control computer.Field intensity probe quilt
It is configured to measure the field intensity in a space respectively, measurement result is sent to processor unit by optical cable, and processor unit can
To realize opto-electronic conversion and measurement result is sent field intensity monitor by data wire, field intensity monitor can be by multichannel field intensity value
By data line transfer to control computer.IRU tests receiving portion 306-2 can complete many cabin electric field intensity on machine and survey
Examination, the test system easy to use of field intensity agitator catch maximum field intensity signal.
Field intensity agitator is that the disclosure newly grinds equipment.Fig. 9 is the whole machine outward appearance of an agitator, the metallic plate of top bending
It is mixing arm.Vane struts pass through the connecting hole in mixing arm, so as to support the mixing arm.Vane struts
Under connect detachable pole.Arrange in lower part box motor, electric machine controller, GPIB/LAN communication modules, power supply
24V lithium batteries and turn die block.There are GPIB COM1s, LAN communication port (RJ45), battery recharger port and power supply on cabinet
Switch.The vane struts can be axially rotated in response to the driving of motor, and drive mixing arm also around leaf
Piece pole axially rotates, so that mixing arm can be with the magnetic distribution in stirring space.In one embodiment,
Mixing arm is processed by 60 degree of the bending of aluminium sheet 5 times of one piece of 0.96m*0.4m, the blade of shaping high 0.48m, wide 0.4m.
Motor intends digital two using Lei Sai companies using 57 serial two-phase hybrid stepping motor of Lei Sai companies, Motor drive
Phase step actuator.GPIB/LAN communication modules are identical with the model of aforementioned selection with the 24V lithium batteries of power supply.
The working method that field agitator is required slowly is rotated for step-by-step movement.The principle of motor and its control system is as schemed
Shown in 10.Host computer writes control program by LabVIEW, sends commands to an agitator by LAN port or GPIB ports
Communication module.The motor control program write by C language of burning in single-chip microcomputer in GPIB/LAN communication modules, by monolithic
Machine distributes pulse to motor driver, and motor driver is operated controlled motor after pulse amplifying again by set working method.
Figure 11 shows that IRC tests the schematic diagram of receiving portion 306-3.
IRC tests receiving portion 306-3 includes：Variable connector and at least one current probe.Each described current probe
It is configured to measure the faradic current in a cable.Variable connector by radio-frequency cable respectively with current probe and frequency spectrum
Analyser connects.Variable connector is connected with control computer through GPIB/HUB, and the instruction in response to control computer, multiple
Switch in current probe, the faradic current that a current probe so as to control computer is specified is measured is input into spectrum analyses
Instrument.Last spectrum analyzer sends measurement result to control computer through GPIB/HUB.IRC tests receiving portion can be completed
The faradic current of multi beam cable is tested.
Variable connector is that the disclosure newly grinds equipment.Variable connector completes for the input of multichannel current probe to be switched to audiofrequency spectrometer
The function of input.Variable connector each path is broadband, needs to cover whole working frequency range (50MHz～400MHz).By
There is no wave filter and amplifier in passage, the design of variable connector is relatively easy, its design principle is as shown in figure 12, using SP2T
(SPDT) and SP4T switch cascade scheme.In a specific embodiment, SP2T and SP4T switches are respectively from more with aforementioned
The passage time-division band filter identical Hittite company HMC284AMS8G and HMC241ALP3E.
Control unit 302 in the system 300 of detection electromagnetic interference is mainly based upon PC platform, by gpib interface or
LAN interface, with the synchronization that networking controls transmitter unit 304 and receiving unit 306.Control unit can be according to testing requirement, certainly
Filter-divider setting, multichannel when dynamic control signal source setting, spectrum analyzer setting, the stepping setting of field agitator, multichannel
The functions such as switch switching is arranged, the monitoring of power amplifier output.Integrated control software can coordinate detection system in a control unit
The work of each instrument and equipment in system, completes Qianmen coupled interference and back door coupled interference is manually or automatically tested.
The process of the detection electromagnetic interference that implements according to the disclosure is introduced below by way of specific embodiment.
Test for IPL：
In a specific embodiment, the test frequency scope of IPL can be set to 75MHz～1610MHz (specifically need to be according to
Operating frequency according to airboarne receiver).
Set up as shown in figure 13 control unit, control unit include being integrated with control software control computer (E1),
GPIB/LAN (E2) etc., wherein K1, K2, K3, K4, K5, K6, K9 are GPIB connecting lines or netting twine.
Set up as shown in figure 13 transmitter unit, transmitter unit include two signal sources (E3 operating frequencies be 75MHz～
1GHz, E4 are 1GHZ～6GHz), two power amplifiers (E5 operating frequencies are 75MHz～1GHz, and E6 is 1GHZ～6GHz), two send out
It is radio-frequency (RF) coaxial feeder line to penetrate antenna (E7 operating frequencies are 75MHz～1GHz, and E8 is 1GHZ～6GHz), R1～R4.
Receiving unit is set up as shown in figure 13, and receiving unit includes spectrum analyzer (E9) and band filter (E10).R5
It is radio-frequency (RF) coaxial feeder line with R6.R6 is made up of 16 radio-frequency (RF) coaxial feeder lines altogether, and 15 therein with airboarne receiver radio frequency feed line
Connection, remaining 1 standby.
Before test, the insertion loss of all radio-frequency cables for using is measured；
Before test, the transmitting antenna in transmitter unit is placed in aircraft passenger compartment, driving cabin etc. needs the specified location of test；
Band filter is positioned over aircraft E/E cabins, near cargo hold airboarne receiver installation site, by Figure 13 connect each test equipment and
Airborne cable；
During test, by control computer control transmitter unit in signal source produce continuous wave (CW) signal, its frequency with
The operating frequency of airborne antenna is identical.The continuous wave signal (S1) that signal source is produced is transmitted to power amplifier, amplified defeated
Go out to transmitting antenna.The Effective Radiated Power (P1) of transmitting antenna needs calculating for efficiency and input power by antenna
Arrive.
During test, the power of the S1 received by airborne antenna by spectrum analyzer measurement, it is contemplated that R5, R6 and E10
Insertion loss, calculate the input power (P2) of airboarne receiver input port position.
IPL=P2-P1
For the receiver of non-single frequency work, such as VHF communication system, frequency sweep need to be carried out in its working band
Test.During test, need to formulate suitable frequency interval, the method for referring to the 21st chapter in DO-160G is configured.Now,
The IPL for obtaining is the curve changed with frequency, and IPL now is the minima in curve.
Test for IRU：
In a specific embodiment, the test frequency scope of IRU can be set as 100MHz～6GHz, specifically need to be according to
(referring to ED-130) is determined according to the Intended radiation frequency of PED.
Set up as shown in figure 14 control unit, control unit include being integrated with control software control computer (E1),
GPIB adapters or hub (E2) etc., wherein K1, K2, K3, K4, K5, K7, K9, K10 are GPIB connecting lines or netting twine.
Set up as shown in figure 14 transmitter unit, transmitter unit include two signal sources (E3 operating frequencies be 100MHz～
1GHz, E4 are 1GHZ～6GHz), two power amplifiers (E5 operating frequencies are 100MHz～1GHz, and E6 is 1GHZ～6GHz), two send out
It is radio-frequency (RF) coaxial feeder line to penetrate antenna (E7 operating frequencies are 100MHz～1GHz, and E8 is 1GHZ～6GHz), R1～R4.
Receiving unit is set up as shown in figure 14, and receiving unit includes that spectrum analyzer (E9), field intensity probe (E10) and field are stirred
Mix device.R9 is radio-frequency (RF) coaxial feeder line.
Before test, the insertion loss of all radio-frequency cables for using is measured；
Before test, the transmitting antenna in transmitter unit is placed in the specified locations such as aircraft passenger compartment, driving cabin and (refers to DO-
307、ED-130)；Field intensity probe and long agitator are positioned over airborne equipment master cabin to be mounted, such as aircraft E/E cabins, driving
Cabin, cargo hold and main cabin etc., connect each test equipment and airborne cable by Figure 14；
During test, the signal source in transmitter unit is controlled by control computer and produces continuous wave (CW) signal and pulse respectively
(PW) signal, its frequency are identical with PED Intended radiation frequencies (referring to ED-130).Continuous wave signal or pulse that signal source is produced
Signal (S2) is transmitted to power amplifier, and amplified output is to transmitting antenna, it is desirable to which its radiation field intensity is 1V/m (normalization sides
Method).
During test, the power of the S2 received by field intensity probe by spectrum analyzer measurement, it is contemplated that the insertion of R9 is damaged
Consumption, calculates electric field intensity V1 of measurement position.
For newly aircraft is ground, any PED Intended radiations pair can be assessed in 100MHz～6GHz in the development stage
The probability of airborne equipment radiation interference.
Test for IRC：
In a specific embodiment, the test frequency scope of IRC can be set as 75MHz～400MHz, specifically need
(referring to ED-130) is determined according to the Intended radiation frequency of PED.
Control unit is set up as shown in figure 15, including being integrated with control computer (E1), the GPIB adapters of control software
Or hub (E2) etc., wherein K1, K2, K3, K4, K8, K9 are GPIB connecting lines or netting twine.
Transmitter unit is set up as shown in figure 15, including 1 signal source (E3 operating frequencies are 75MHz～400MHz), 1 work(
Put (E5 operating frequencies are 75MHz～400MHz), (E7 operating frequencies are 75MHz～400MHz to 1 transmitting antenna, R1, R3 are to penetrate
Frequency coaxial feeder.
Receiving unit is set up as shown in figure 15, including spectrum analyzer (E9), variable connector (E12) and current probe
(E13).R7, R8 are radio frequency coaxial-cable.
Before test, the insertion loss of all radio-frequency cables for using is measured；
Before test, the transmitting antenna in transmitter unit is placed in the specified locations such as aircraft passenger compartment, driving cabin and (refers to DO-
307)；Variable connector is positioned over wireline test region on machine, such as E/E cabins, driving cabin, main cabin and cargo hold etc..Simultaneously in difference
Cable to be measured on install current probe, 8 current probes can be installed simultaneously, these probes are connected by radio-frequency (RF) coaxial feeder line
To variable connector；
During test, the signal source in transmitter unit is controlled by control computer and produces continuous wave (CW) signal and pulse respectively
(PW) signal, its frequency are identical with PED Intended radiation frequencies (referring to ED-130).Continuous wave signal or pulse that signal source is produced
Signal (S3) is transmitted to power amplifier, and amplified output is to transmitting antenna, it is desirable to which its radiation field intensity is 1V/m (normalization sides
Method).
During test, the current value of the S3 received by current probe by spectrum analyzer measurement, it is contemplated that R7, R8, E12
Insertion loss, calculate the faradic current A1 on cable to be measured.
For newly aircraft is ground, any PED Intended radiations pair can be assessed in 75MHz～400MHz in the development stage
The probability of airborne equipment Conduction Interference.
In general, the various example embodiments of the disclosure can in hardware or special circuit, software, logic, or its
What is implemented in combining.Can implement within hardware in terms of some, and in terms of other can by controller, microprocessor or
Implement in the firmware or software of other computing devices.When each side of embodiment of the disclosure are illustrated or described as frame
Figure, flow chart or when being represented using some other figures, it will be understood that square frame described herein, device, system, techniques or methods can
Using in terms of as nonrestrictive example in hardware, software, firmware, special circuit or logic, common hardware or controller or other
Implement in calculation equipment, or its some combination.
In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this generic operation to illustrate
Particular order is completed with sequential order, or executes the operation of all diagrams to obtain expected result.In some cases, many
Task or parallel processing can be beneficial.Similarly, although discussed above contain some specific implementation details, this is not
The scope for limiting any invention or claim is should be interpreted that, and should be interpreted that the specific embodiment to specific invention can be directed to
Description.Some features in this specification described in the context of separate embodiment can also combined implementation in single reality
Apply in example.Conversely, various features described in the context of single embodiment can also discretely multiple embodiments or
Implement in any appropriate sub-portfolio.
Although describing theme with the language specific to architectural feature and/or method action, but it is to be understood that institute
The theme limited in attached claim is not limited to above-described special characteristic or action.Conversely, above-described specific spy
Action of seeking peace is disclosed as the exemplary forms for realizing claim.
Claims (12)
1. a kind of detection civil aircraft portable electric appts electromagnetic interference system, including：
Control unit, is configured to control unit in the system to implement the test of electromagnetic interference；
Transmitter unit, is configured to respond to described control unit, generates and launches test signal；And
Receiving unit, is configured to respond to described control unit, measures the test signal；
Wherein described control unit is additionally configured to process the data that measurement is obtained and analyzed.
2. system according to claim 1, wherein described transmitter unit include：
Signal generator, is configured to respond to described control unit, generates the test signal with specific waveforms and frequency；
Power amplifier, is configured to respond to described control unit, implements power amplification to the test signal；And
Transmitting antenna, is configured to launch the test signal.
3. system according to claim 1, wherein described receiving unit include：
Spectrum analyzer, is configured to measure test value in test lead；And
At least one of following module：
- interference path loss (IPL) test module；
- Intended radiation transmitting direct-coupling interference airborne equipment (IRU) test module；
- Intended radiation is emitted through hole coupling interference airborne equipment (IRC) test module.
4. system according to claim 3, wherein described IPL tests module include：
Multiple airborne antennas, are configured to receive the test signal；
Multichannel time-division band filter, the test signal for being configured to receive on the plurality of airborne antenna are input into respectively
To the spectrum analyzer；
Wherein, the test value includes the performance number of the test signal that the airborne antenna termination is received.
5. system according to claim 3, wherein described IRU tests module include：
At least one field intensity probe, each described field intensity probe are configured to measure the field intensity in a space；
Field intensity agitator, is configured to stir the magnetic distribution in each space residing for the field intensity probe；
Processor unit, is configured to the measured value and is input into the spectrum analyzer；
Wherein, the test value includes the maximum field intensity values that each described field intensity probe is measured.
6. system according to claim 3, wherein described IRC tests module include：
At least one current probe, each described current probe are configured to measure the faradic current on a cable；
Variable connector, is configured to the faradic current that at least one current probe measures and is separately input into the frequency spectrum point
Analyzer；
Wherein, the test value includes the faradism flow valuve that the current probe is measured.
7. system according to claim 1, wherein described control unit include：
Control computer, the control program of integrated system are done either automatically or manually every electromagnetic interference by the control program
Test；
Hub, is connected to the transmitter unit and the receiving unit, to realize described control unit with the transmitter unit
And the control and communication between the receiving unit.
8. a kind of method of detection IPL, including：
Test signal is generated and amplifies, wherein described test signal is the continuous wave signal with characteristic frequency；
The test signal is launched by transmitting antenna；
The test signal is received by airborne antenna；
By multichannel time-division band filter, the test signal received on the airborne antenna is conducted to spectrum analyzer
On, to obtain the power level of the test signal received on the airborne antenna；
Power level based on the test signal received on the airborne antenna launches the test signal with transmitting antenna
The difference of power level, obtains IPL.
9. a kind of method of detection IRU, including：
Field intensity probe is respectively placed in space to be measured；
Test signal is generated and amplifies, wherein described test signal is continuous wave signal and the pulse signal with characteristic frequency；
The test signal is launched by transmitting antenna；
Magnetic distribution in space residing for field intensity probe is stirred by field intensity agitator；
By the maximum field strength in the field intensity probe measurement space and it is input into spectrum analyzer.
Test signal described in normalized and the maximum field strength, then it is intentional that the maximum field strength is pressed portable electric appts
Radiation actual strength carries out waiting than amplifying, and analysis produces the probability of electromagnetic interference.
10. a kind of method of detection IRC, including：
Current probe is placed on cable under test；
Test signal is generated and amplifies, wherein described test signal is continuous wave signal and the pulse signal with characteristic frequency；
The test signal is launched by transmitting antenna；
The faradic current generated by test signal described in current probe measurement cable induction；
Spectrum analyzer is separately input into the faradic current that each current probe is measured by variable connector.
Test signal described in normalized and the faradism flow valuve, then the faradism flow valuve is pressed portable electric appts
Intended radiation actual strength carries out waiting than amplifying, and analysis produces the probability of electromagnetic interference.
A kind of 11. methods of detection civil aircraft portable electric appts electromagnetic interference, including appointing according in claim 8 to 11
At least one in one methods described.
12. methods according to claim 11, wherein described amplification test signal include：
Based on the value of the reflection power and output measured at directional coupler end, determine that the test signal needs to be exaggerated
Degree.
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| CN107462814A (en) * | 2017-06-16 | 2017-12-12 | 北京交通大学 | Additional electromagnetic field induces dielectric-slab creeping discharge device under vacuum environment |
| CN107861105A (en) * | 2017-10-24 | 2018-03-30 | 中国电力科学研究院有限公司 | A kind of test system and method for detecting transmission line of electricity and being influenceed on radar passive jamming |
| CN107860989A (en) * | 2017-10-11 | 2018-03-30 | 上海无线电设备研究所 | Mancarried electronic aid electromagnetic interference aircraft coupling path loss test method |
| CN109100752A (en) * | 2018-08-29 | 2018-12-28 | 广州市泺立能源科技有限公司 | Electromagnetic interference detection system and method based on Beidou positioning |
| CN109412715A (en) * | 2018-09-06 | 2019-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | Airborne communication radio frequency reception equipment quantizating index electromagnetic interference test system and method |
| CN109444615A (en) * | 2018-12-25 | 2019-03-08 | 北京无线电计量测试研究所 | A kind of bunch of cables Conduction Interference field diagnostic and test device and method |
| CN110501667A (en) * | 2019-08-02 | 2019-11-26 | 西安飞机工业（集团）有限责任公司 | A kind of test macro and ground experiment method of ultrashort wave direction finder |
| CN112213617A (en) * | 2020-09-15 | 2021-01-12 | 国网江苏省电力有限公司常州供电分公司 | IC chip electromagnetic compatibility testing method and device and readable storage medium |
| CN112505464A (en) * | 2020-12-21 | 2021-03-16 | 广州广电计量检测股份有限公司 | Simulation test method and device for antenna induction strong electromagnetic pulse coupling effect |
| CN112649681A (en) * | 2020-08-18 | 2021-04-13 | 合肥恒烁半导体有限公司 | MCU chip electromagnetic compatibility test circuit |
| CN114499559A (en) * | 2022-04-18 | 2022-05-13 | 湖南雷远电子科技有限公司 | Electromagnetic energy protection module and radio frequency transceiving link based on same |
| CN116008713A (en) * | 2023-02-22 | 2023-04-25 | 中国人民解放军陆军工程大学 | Electromagnetic interference detection system of unmanned aerial vehicle flight control system |
| CN116953639A (en) * | 2023-07-25 | 2023-10-27 | 中国人民解放军陆军工程大学 | Automatic test system and method for anti-electromagnetic interference capability of TR (transmitter-receiver) component |
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| CN107462814A (en) * | 2017-06-16 | 2017-12-12 | 北京交通大学 | Additional electromagnetic field induces dielectric-slab creeping discharge device under vacuum environment |
| CN107860989A (en) * | 2017-10-11 | 2018-03-30 | 上海无线电设备研究所 | Mancarried electronic aid electromagnetic interference aircraft coupling path loss test method |
| CN107861105A (en) * | 2017-10-24 | 2018-03-30 | 中国电力科学研究院有限公司 | A kind of test system and method for detecting transmission line of electricity and being influenceed on radar passive jamming |
| CN109100752B (en) * | 2018-08-29 | 2023-02-17 | 广州市泺立能源科技有限公司 | Electromagnetic interference detection system and method based on Beidou positioning |
| CN109100752A (en) * | 2018-08-29 | 2018-12-28 | 广州市泺立能源科技有限公司 | Electromagnetic interference detection system and method based on Beidou positioning |
| CN109412715A (en) * | 2018-09-06 | 2019-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | Airborne communication radio frequency reception equipment quantizating index electromagnetic interference test system and method |
| CN109412715B (en) * | 2018-09-06 | 2021-06-08 | 中国航空工业集团公司沈阳飞机设计研究所 | System and method for testing electromagnetic interference of quantization index of airborne communication radio frequency receiving equipment |
| CN109444615A (en) * | 2018-12-25 | 2019-03-08 | 北京无线电计量测试研究所 | A kind of bunch of cables Conduction Interference field diagnostic and test device and method |
| CN110501667A (en) * | 2019-08-02 | 2019-11-26 | 西安飞机工业（集团）有限责任公司 | A kind of test macro and ground experiment method of ultrashort wave direction finder |
| CN112649681A (en) * | 2020-08-18 | 2021-04-13 | 合肥恒烁半导体有限公司 | MCU chip electromagnetic compatibility test circuit |
| CN112213617A (en) * | 2020-09-15 | 2021-01-12 | 国网江苏省电力有限公司常州供电分公司 | IC chip electromagnetic compatibility testing method and device and readable storage medium |
| CN112505464A (en) * | 2020-12-21 | 2021-03-16 | 广州广电计量检测股份有限公司 | Simulation test method and device for antenna induction strong electromagnetic pulse coupling effect |
| CN114499559A (en) * | 2022-04-18 | 2022-05-13 | 湖南雷远电子科技有限公司 | Electromagnetic energy protection module and radio frequency transceiving link based on same |
| CN116008713A (en) * | 2023-02-22 | 2023-04-25 | 中国人民解放军陆军工程大学 | Electromagnetic interference detection system of unmanned aerial vehicle flight control system |
| CN116953639A (en) * | 2023-07-25 | 2023-10-27 | 中国人民解放军陆军工程大学 | Automatic test system and method for anti-electromagnetic interference capability of TR (transmitter-receiver) component |
| CN116953639B (en) * | 2023-07-25 | 2024-03-19 | 中国人民解放军陆军工程大学 | Automatic test system and method for anti-electromagnetic interference capability of TR (transmitter-receiver) component |
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