CN108170954A - A kind of simulating analysis of signal equipment electric field radiation transmitting - Google Patents
A kind of simulating analysis of signal equipment electric field radiation transmitting Download PDFInfo
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- CN108170954A CN108170954A CN201711452714.6A CN201711452714A CN108170954A CN 108170954 A CN108170954 A CN 108170954A CN 201711452714 A CN201711452714 A CN 201711452714A CN 108170954 A CN108170954 A CN 108170954A
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Abstract
The present invention provides a kind of simulating analysis of signal equipment electric field radiation transmitting, modeling and simulation analysis is carried out by minimum modeling unit of internal module to signal equipment using the thinking of System Level Electromagnetic Compatibility emulation, test empirical data based on each module establishes the electromagnetic simulation model of each module, it extracts interconnection cable, the external cable of equipment and equipment cover board gap, connector gap, ring flange gap, want electromagnetic coupling emulation element, and simplified based on ventilation and heat slit.Present invention firstly provides the RE102 emulation modes of signal equipment, solve the problems, such as that signal equipment interference source and coupling path modeling are difficult, can fill up the blank of the domestic area research.
Description
Technical field
The invention belongs to technical field of electromagnetic compatibility, are related to the simulating analysis of signal equipment electric field radiation transmitting, especially
It is related to a kind of simulating analysis of RE102 pilot projects in signal equipment GJB151B-2013.
Background technology
Important equipment/subsystem of the signal equipment as system-level weaponrys such as aircraft, surface vessel, ground plate armours,
Its Electro Magnetic Compatibility directly affects the tactical qualities such as communication, commander, the navigation of system-level weaponry or even equipment safety.Mesh
The Electro Magnetic Compatibility control of preceding home communications equipment relies primarily on the rectification before sizing, difficult with orientation problem because finding, often consumes
Take a large amount of manpower and materials, even result in the delay of equipment preparation progress.Electro Magnetic Compatibility emulation is carried out to signal equipment, with emulation
As a result electromagnetic Compatibility Design and experiment are instructed, can find early and evades the potential emc issue of equipment, is solution
The certainly most effective means of signal equipment emc issue.Signal equipment emc issue is concentrated mainly on GJB151B-
2013 RE102：10kHz~18GHz electric field radiation emission test projects study the RE102 simulating analysis of signal equipment,
It is of great significance to solving signal equipment emc issue.
The RE102 simulation analysis of signal equipment mainly faces following difficulty：1) signal equipment belongs to multi-layer composite equipment
System includes multiple levels such as component, pcb board, module, cabinet, system, it is difficult to the electromagnetic compatibility analysis of single level
Method analyzes signal equipment.2) electromagnetic interference Source Type is various inside signal equipment, large number of, frequency coverage
Extensively, electromagnetic interference source characterization and modeling are difficult.Existing power of alterating and direct current, chip, radio-frequency module etc. are primary dry inside signal equipment
Source is disturbed, further includes the secondary interference sources such as Switching Power Supply, PCB circuits, RF Amplifier Module；Existing frequency domain Static disturbance source, also has
Time domain transient interference source, also prompt frequency hopping interference source；Not only wide variety, quantity are also numerous for interference source；Interference source frequency range
It is covered by 50Hz harmonic waves to several GHz, above-mentioned various interference source situations, characterization and modeling to interference source bring very big be stranded
It is difficult.3) signal equipment electromagnetic coupling path is difficult to accurately obtain and model.Signal equipment intraconnection cable type and number are many
More, cable bundle is tied up at random, and cable radiation modeling is difficult；Between signal equipment chassis cover and apparatus casing, connector and equipment
The gap position that is formed between housing by tolerance is random, gap size is difficult to determine.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of simulation analysis side of signal equipment electric field radiation transmitting
Method in the schematic design phase of new equipment, using the 3 d structure model of equipment and the assessment test data of existing module, is realized
The RE102 simulation analysis of equipment, suitable for signal equipments such as airborne terminal, vehicle-mounted terminal, carrier-borne terminals.
The technical solution adopted by the present invention to solve the technical problems includes the following steps：
1) it establishes the simplification 3 d structure model of signal equipment, models unit, module by minimum of internal module during modeling
Inside is without modeling；Ignore the hardware that out to out is less than λ/4, λ is the minimum operation wavelength of signal equipment；To shadow
The nonmetal structure part of shielding properties is rung so that scales slit structure to be waited to be substituted；
2) in common mode current to module on external cable under the premise of module works independently and the near field at module gap
Electric field is tested, by the use of the common mode current that measurement obtains as the excitation of each module cable model, the seam obtained using measurement
Surface electromagnetic current at gap electric Field Calculation gap, and as the excitation of fissures model, establish the slit of each module and cable emulation
Model；
3) 3 d structure model based on equipment extracts and equips external cable and equipment cover board gap, connector gap, method
Blue disk gap, ventilation and heat slit are element；The voltage of cable or current excitation model are initially set up, i.e., in cable and equipment shell
Body junction applies excitation, and establishes different cable types, section form, canoe and difference using Electromagnetic Simulation tool
Cable model under the conditions of load impedance realizes the change of cable wiring mode using D modeling function；Utilize Electromagnetic Simulation
Tool establish different gap positions, gap length, gap width simulation model, slot leakage result is emulated；It determines
It is most suitable for the electromagnetic coupling model of equipment；
4) according to the slit and cable model of the internal each module of equipment, with reference to equipment electromagnetic coupling model, to equipment
RE102 radiation characteristics carry out whole emulation, are compared with result of the test, with the correction of test result model.
The beneficial effects of the invention are as follows：The thinking emulated using System Level Electromagnetic Compatibility, to signal equipment with internal mode
Block carries out modeling and simulation analysis for minimum modeling unit, solves the electromagnetic compatibility analysis method pair being difficult to single level
The problem that signal equipment is analyzed.The inheritance of each module inside signal equipment is made full use of, in the conceptual design rank of equipment
Section can build prototyping system with existing module, and the test empirical data based on each module establishes the Electromagnetic Simulation of each module
Model solves the problems, such as that signal equipment interference source characterization and modeling are difficult.Extract interconnection cable, the external cable of equipment and equipment
Cover board gap, connector gap, ring flange gap, the various gaps of ventilation and heat slit emulate element for main electromagnetic coupling, and
It carries out necessity to simplify, solves the problems, such as that signal equipment electromagnetic coupling path is difficult to accurately acquisition and modeling.The present invention carries for the first time
Go out the RE102 emulation modes of signal equipment, solved the problems, such as that signal equipment interference source and coupling path modeling are difficult, it can be with
Fill up the blank of the domestic area research.
Description of the drawings
Fig. 1 is a kind of composition frame chart of typical signal equipment.
Fig. 2 is the flow chart of the method for the invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples, and the present invention includes but are not limited to following implementations
Example.
The present invention includes the following steps：
1) the simplification 3 d structure model of signal equipment is established.Mainly simplification principle is：It is modeled by minimum of internal module
Unit, inside modules are without modeling；Ignore metal structure of the out to out less than λ/4 (λ is the minimum operation wavelength of equipment)
Part；The nonmetal structure part for influencing shielding properties is substituted with grade scales slit structure.
2) slit+cable electromagnetic simulation model of the internal each module of equipment is established.Using inheritance of the module on equipment,
Experimental prototype system of knowing the real situation is built based on existing module, the common mode under the premise of module works independently to module on external cable
Near field electric field at electric current and module gap is tested, by the use of measuring obtained common mode current as each module cable model
Excitation is combined using the gap electric field that measurement obtainsTo calculate the surface electromagnetic current at gap, and as gap
Slit+cable simulation model of each module is established in the excitation of model.
3) electromagnetic coupling model of equipment is established.3 d structure model based on equipment extracts and equips external cable and dress
Standby cover board gap, connector gap, ring flange gap, the various gaps of ventilation and heat slit are element.Initially set up the electricity of cable
Pressure or current excitation model apply in cable and apparatus casing junction and encourage, and it is different that Electromagnetic Simulation tool is utilized to establish
Cable model under cable type, section form, canoe and different loads impedance conditions utilizes D modeling function reality
The change of existing cable wiring mode, analyzes the affecting laws that these factors radiate low frequency cable.It is built using Electromagnetic Simulation tool
Stand different gap positions, gap length, gap width simulation model, slot leakage result is emulated, analyze these because
Element is to the affecting laws of connector gap radiation.Electromagnetic coupling rule is obtained on this basis, determines to be most suitable for the electromagnetism of equipment
Coupling model.
4) according to slit+cable model of the internal each module of equipment, with reference to equipment electromagnetic coupling model, to equipment
RE102 radiation characteristics carry out whole emulation, are compared with result of the test, with the correction of test result model.
The technical scheme is that a kind of signal equipment electric field radiation launching simulation analysis method, with certain is small shown in Fig. 1
Description of specific embodiments of the present invention for type communication equipment.The communication equipment by a cube metal shell and
Four power supply, radio frequency, data processing, display and control internal modules form, intermodule by radio frequency coaxial-cable and signal/
Controlling cable connects, and device external is powered it by a 220V power supply line, and other external cables include 1 connection
The cable and a mouse lines of the RF coaxial line of coaxial load, 1 connection computer.Refering to what is shown in Fig. 2, specific implementation
Step is as follows：
1) the simplification 3 d structure model of equipment is established
(1) unit, module are modeled as minimum with four modules of control using equipment internal electric source, radio frequency, data processing, display
Inside is without modeling.
(2) the inside and outside interconnection cable of equipment does not consider thickness, is modeled using cable architecture.Interconnection cable Shu Caiyong is permanent
Determine the bend pipe structure modeling of cross section.
(3) the nonmetal structure part of equipment inside and equipment surface is deleted or is replaced.Wherein corner bracket, nameplate,
The structural members such as hand directly delete processing, and indicator light, fuse need to be substituted with equivalent slit structure.
(4) equipment and internal module are simplified and is reconstructed, ignoring apparatus casing surface influences less simulation result
Concaveconvex structure, and be smoothed.
2) slit+cable electromagnetic simulation model of each module inside equipment is established
Using the result of the test of module each inside equipment, slit+cable Electromagnetic Simulation mould of each module inside equipment is established
Type, key step are as follows：
(1) build experimental prototype system using the housing for having module and existing equipment, by power supply, radio frequency, data processing,
Display is denoted as module 1, module 2, module 3, module 4 respectively with control module.For ease of emulation, prototyping system intraconnection cable
It is laid in strict accordance with Electro Magnetic Compatibility principle.
(2) using current sensor cooperation special measurement equipment, in external interconnection cable when measurement module 1 works independently
Common mode current I1(fm,pn), m=1,2 ..., M, n=1,2 ... N.Wherein, fmRepresent the Frequency point measured, M is what is measured
Frequency point sum, f1:fMCover the RE102 partial test frequency ranges of 10kHz~450MHz；pnRepresent position of the measurement point on cable,
N is that the location point measured is total, p1:pNCover the whole length of cable.
(3) step (2) is performed to module 2 to module 4, measures the common mode in interconnection cable when each module works independently respectively
Electric current Ii(fm,pn), m=1,2 ..., M, n=1,2 ... N, i=2,3 ..., S.
(4) coordinate special measurement equipment using near field electric-field sensor, when measurement module 1 works independently at each gap in surface
Electric field E1(fm, n), m=1,2 ..., M, n=1,2 ... N.Wherein, fmRepresent the Frequency point measured, M is the frequency point measured
Sum, f1:fMCover the RE102 partial test frequency ranges of 10kHz~18GHz；N is the number of 1 surface gaps of module, and N is total for gap
Number.
(5) step (4) is performed to module 2 to module 4, measures the electricity at each gap in surface when each module works independently respectively
Field Ei(fm,pn), m=1,2 ..., M, n=1,2 ... N, i=2,3 ..., S.
(6) by the use of the common mode current that measurement obtains as the excitation of each module cable model, the gap obtained using measurement
Electric field combinesTo calculate the surface electromagnetic current at gap, and as the excitation of fissures model, establish each module
Slit+cable simulation model.
3) electromagnetic coupling model of equipment is established
Equipment is abstracted, extracts external cable, housing cover gap, three, connector gap principal element establish it
Simulation model.
(1) voltage of cable or current excitation model are established according to the 3 d structure model of equipment, i.e., in cable and equipment
Housing junction applies excitation, and establishes different cable types, section form, canoe and not using Electromagnetic Simulation tool
With the cable model under the conditions of load impedance, the change of cable wiring mode is realized using D modeling function, analyze these because
The affecting laws that element radiates low frequency cable.
(2) it for the external interconnection cable of every beam of equipment, according to the rule of (1), determines to be most suitable for the beam interconnection cable
Simulation parameter.
(3) it for the housing cover gap of equipment, first according to 3 d structure model, is established not using Electromagnetic Simulation tool
Simulation model under the conditions of same gap position, gap direction, gap length, gap width, emulates slot leakage result,
Analyze affecting laws of these factors to gap radiation.
(4) it for the possible cover board gap of equipment, according to the rule of (3), determines to be most suitable for the simulation parameter in the gap.
(5) it for the connector gap of equipment, first according to 3 d structure model, is established using Electromagnetic Simulation tool different
Simulation model under the conditions of gap position, gap length, gap width emulates slot leakage result, analyze these because
Element is to the affecting laws of connector gap radiation.
(6) it for the possible connector gap of equipment, according to the rule of (5), determines to be most suitable for the simulation parameter in the gap.
4) according to slit+cable model of module each inside equipment, bonding apparatus electromagnetic coupling model, to equipment
RE102 radiation characteristics carry out whole emulation, are compared with result of the test, model is modified with result of the test.
The above is only a specific embodiment of the present invention, and those skilled in the art can carry out the present invention each
Kind modification and variation is without departing from the spirit and scope of the present invention.In this way, if these modifications and changes of the present invention belongs to this
Invention claim record technical solution and its equivalent technologies within the scope of, then the present invention be also intended to comprising these change and
Including modification, these modifications and changes based on inventive concept are still within the claims of the present invention.
Claims (1)
1. a kind of simulating analysis of signal equipment electric field radiation transmitting, it is characterised in that include the following steps：
1) it establishes the simplification 3 d structure model of signal equipment, models unit, inside modules by minimum of internal module during modeling
Without modeling；Ignore the hardware that out to out is less than λ/4, λ is the minimum operation wavelength of signal equipment；To influencing to shield
The nonmetal structure part of performance is covered so that scales slit structure to be waited to be substituted；
2) in common mode current to module on external cable under the premise of module works independently and the near field electric field at module gap
It is tested, by the use of the common mode current that measurement obtains as the excitation of each module cable model, the gap electricity obtained using measurement
Surface electromagnetic current at field computation gap, and as the excitation of fissures model, establish the slit of each module and cable simulation model；
3) 3 d structure model based on equipment extracts and equips external cable and equipment cover board gap, connector gap, ring flange
Gap, ventilation and heat slit are element；The voltage of cable or current excitation model are initially set up, i.e., is connected in cable and apparatus casing
It meets place and applies excitation, and different cable types, section form, canoe and different loads are established using Electromagnetic Simulation tool
Cable model under impedance conditions realizes the change of cable wiring mode using D modeling function；Utilize Electromagnetic Simulation tool
Establish different gap positions, gap length, gap width simulation model, slot leakage result is emulated；It determines most suitable
Attach together standby electromagnetic coupling model；
4) according to the slit and cable model of the internal each module of equipment, with reference to equipment electromagnetic coupling model, to the RE102 spokes of equipment
It penetrates characteristic and carries out whole emulation, compared with result of the test, with the correction of test result model.
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| CN201711452714.6A CN108170954A (en) | 2017-12-28 | 2017-12-28 | A kind of simulating analysis of signal equipment electric field radiation transmitting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109598060A (en) * | 2018-12-03 | 2019-04-09 | 北京遥感设备研究所 | A kind of circuit board level product radiation-emitting Emulation of EMC method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901286A (en) * | 2010-07-09 | 2010-12-01 | 北京航空航天大学 | Modeling method for leading cable and chassis to be equivalent to interference sources under complex electromagnetic environment |
| CN105302958A (en) * | 2015-10-28 | 2016-02-03 | 北京交通大学 | Method for establishing high-speed train system-level electromagnetic compatibility model |
| US9417275B2 (en) * | 2014-03-20 | 2016-08-16 | Beta Lasermike | Cable measuring device and method |
| CN106202684A (en) * | 2016-07-01 | 2016-12-07 | 江苏科技大学 | Electromagnetic wave is complicated transmission line coupling Forecasting Methodology with in slit cavity |
-
2017
- 2017-12-28 CN CN201711452714.6A patent/CN108170954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901286A (en) * | 2010-07-09 | 2010-12-01 | 北京航空航天大学 | Modeling method for leading cable and chassis to be equivalent to interference sources under complex electromagnetic environment |
| US9417275B2 (en) * | 2014-03-20 | 2016-08-16 | Beta Lasermike | Cable measuring device and method |
| CN105302958A (en) * | 2015-10-28 | 2016-02-03 | 北京交通大学 | Method for establishing high-speed train system-level electromagnetic compatibility model |
| CN106202684A (en) * | 2016-07-01 | 2016-12-07 | 江苏科技大学 | Electromagnetic wave is complicated transmission line coupling Forecasting Methodology with in slit cavity |
Non-Patent Citations (3)
| Title |
|---|
| ARKINE: ""丛书15-算例13：分系统设备GJB151-RE102仿真"", 《豆丁，链接：HTTP://WWW.DOCIN.COM/P-1800305322.HTML》 * |
| 卢育中: ""小型飞行器复杂电磁环境下的电磁干扰耦合及防护研究"", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 聂宝林: ""电子设备电磁屏蔽特性分析与设计方法研究"", 《中国博士学位论文全文数据库信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109598060A (en) * | 2018-12-03 | 2019-04-09 | 北京遥感设备研究所 | A kind of circuit board level product radiation-emitting Emulation of EMC method |
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