CN109342851A - A kind of darkroom analogy method of complex electromagnetic environment - Google Patents
A kind of darkroom analogy method of complex electromagnetic environment Download PDFInfo
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- CN109342851A CN109342851A CN201811203048.7A CN201811203048A CN109342851A CN 109342851 A CN109342851 A CN 109342851A CN 201811203048 A CN201811203048 A CN 201811203048A CN 109342851 A CN109342851 A CN 109342851A
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- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 39
- 238000012360 testing method Methods 0.000 claims description 7
- 230000010287 polarization Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims 1
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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
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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
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
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- Monitoring And Testing Of Transmission In General (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention provides a kind of darkroom analogy method of complex electromagnetic environment, the acquisition including complex electromagnetic environment: acquisition is scanned to different regions environmental signal, and is recorded in a manner of scene signals；The radiofrequency field in environment electric signal is converted to using EMF antenna first to be input in spectrum analyzer, further spectrum analyzer is sampled by quadrature sampling mode, and I, Q two paths of data that sampling obtains are output to IQR data logger and kept records of；A kind of darkroom analogy method of complex electromagnetic environment of the present invention is simulated with the use of the acquisition of complex electromagnetic environment, the calibration of continuous wave signal field strength, the calibration of actual scene signal strength and darkroom, and the darkroom simulation to complex electromagnetic environment may be implemented.It is abundant with simulation electromagnetic environment, the small feature of simulation space occupied.
Description
Technical field
The invention belongs to electromagnetic compatibility test fields, more particularly, to a kind of darkroom analogy method of complex electromagnetic environment.
Background technique
The concept of complex electromagnetic environment is originally derived from battlefield, it refers to close by being distributed on time domain, energy domain, frequency domain and airspace
Collection, quantity is various, pattern is complicated, the multi-signal of dynamic random is overlapped and formed, and centainly influences on equipment, fuel oil and personnel component
Battle Field Electromagnetic.With the development of urban construction and automobile industry, various transmitters, high power transformation are set in surroundings
Standby and television broadcasting communication base station etc. is more and more, and electromagnetic environment also becomes increasingly complex, due to there is a large amount of electronic equipments on vehicle,
Complicated electromagnetic environment may interfere with the normal work of equipment, threaten to the functionality of vehicle and safety.Although state
The inside and outside relevant criterion having for the test of vehicle radiation immunity, but occurred at present multiple in radiation immunity testing experiment
The vehicle that there is no problem, and the case to break down in actual environment traveling, it can be seen that, complex electromagnetic environment is studied to vehicle
Influence be of great significance.
Under prior art conditions, there are two types of modes for influence of the research complex electromagnetic environment to vehicle: first is that outer field
Verifying；Second is that darkroom simplation verification；First method realize it is relatively simple, but with high costs, inefficiency, personnel risk compared with
Height, in contrast, in dark indoor simulation complex electromagnetic environment, study the adaptability of vehicle in the present context have it is true, can weigh
Multiple, test condition editable and it is at low cost the advantages that.
Darkroom simplation verification can substantially be divided into two class of in-kind simulation and semi-physical object simulating.In-kind simulation is by true
Electronics generate complicated electromagnetism threatening environment, and semi-physical object simulating is to generate complicated electromagnetism by a large amount of simulator to threaten
Environment.Under prior art conditions, since the development and change of road electromagnetic environment are fast, interference source category is more, either in-kind simulation
Method or semi-physical object simulating method, electronic equipment or simulator position will affect electromagnetic signal distribution, and different roads
Environment needs different electronic equipment or simulator, and it is more huge to will lead to electromagnetic environment generation system.Therefore market in urgent need one
The darkroom analogy method that kind can simulate complex electromagnetic environment, while not limited by space constraints.
Summary of the invention
In view of this, the present invention is directed to propose a kind of darkroom analogy method of complex electromagnetic environment, electric with the use of complexity
Acquisition, the calibration of continuous wave signal field strength, the calibration of actual scene signal strength and the darkroom simulation of magnetic environment, may be implemented to complexity
It simulates in the darkroom of electromagnetic environment.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of darkroom analogy method of complex electromagnetic environment, comprising:
Step 1: the acquisition of complex electromagnetic environment: acquisition being scanned to different regions environmental signal, and is believed with scene
Number mode recorded；The radiofrequency field in environment is converted to electric signal using EMF antenna first and is input to spectrum analyzer
In, further spectrum analyzer is sampled by quadrature sampling mode, and I, Q two paths of data that sampling obtains are output to
IQR data logger is kept records of；
Step 2: the calibration of continuous wave signal field strength: field generating device and Field probe are set in darkroom；Generating device according to
Secondary connection wall connector for substrate, directional coupler, power amplifier and vector signal generator；Vector signal generator is arranged to export
Continuous wave signal adjusts continuous wave signal size, while using the field intensity value of field monitor observation Field probe, when field strength reaches step
When the actual scene signal strength that spectrum analyzer records in rapid 1, the output power A and day of vector signal generator at this time are recorded
Linear polarization direction；
Step 3: actual scene signal strength calibration: in darkroom be arranged field reception device, the position of field generating device and
Highly constant, field generating device is identical as field reception device polarization direction, adjusts field generating device towards field reception device；Field connects
Receiving apparatus is sequentially connected siding connector and measuring receiver；Vector signal generator is set and exports continuous wave signal, output work
Rate size is A, and measuring receiver measures power to record at this time is B；Further connection IQR data logger occurs to vector signal
Device, field generating device exports the scene signals recorded in step 1 at this time, and record uses the mould of band power when measuring receiver
When the power measured under formula is B, the corresponding output power C of vector signal generator；
Step 4: darkroom simulation: being restored to equipment and location status in step 2, the instant vehicle testing reference in Field probe position
Point position, vector signal generator export the scene signals of IQR data logger record, and output power is C.
Further, vector signal generator is SMW200A type vector signal generator.
Further, in step 2: Field probe is demarcated in 30MHz to 2000MHz frequency range using four probe methods,
The reading average value of four probes is as calibration value；Field probe is demarcated in 2000MHz to 6000MHz using single probe.
Further, in step 2: distance of the field generating device antenna oscillator apart from ground is greater than 0.25m, antenna phase
Centre distance Field probe horizontal distance is not less than 2m.
Further, in step 2: when using single probe method calibration field strength, popping one's head in apart from ground level (1 ± 0.05)
M, when being demarcated using four probe methods, the extended line alignment of field generating device antenna phase center is popped one's head in for second from top to bottom,
The probe is apart from ground level (1 ± 0.05) m.
Compared with the existing technology, a kind of darkroom analogy method of complex electromagnetic environment of the present invention, has the advantage that
A kind of darkroom analogy method of complex electromagnetic environment of the present invention, with the use of the acquisition, continuous of complex electromagnetic environment
The calibration of wave signal strength, the calibration of actual scene signal strength and darkroom simulation, may be implemented the darkroom mould to complex electromagnetic environment
It is quasi-.It is abundant with simulation electromagnetic environment, the small feature of simulation space occupied.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
In the accompanying drawings:
Fig. 1 is that a kind of darkroom analogy method of complex electromagnetic environment of the embodiment of the present invention acquires schematic diagram；
Fig. 2 is a kind of darkroom analogy method continuous wave signal field strength calibration first of complex electromagnetic environment of the embodiment of the present invention
Schematic diagram；
Fig. 3 is a kind of darkroom analogy method continuous wave signal field strength calibration second of complex electromagnetic environment of the embodiment of the present invention
Schematic diagram；
Fig. 4 is that a kind of darkroom analogy method actual scene signal strength calibration of complex electromagnetic environment of the embodiment of the present invention is shown
It is intended to.
Description of symbols:
1-EMF antenna；2-IQR data logger；3- spectrum analyzer；21- Field probe；31- generating devices；32-
Reception device；4- vector signal generator；5- power amplifier；6- directional coupler；7- power meter；8- siding connector；9-
Measuring receiver.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of darkroom analogy method of complex electromagnetic environment, comprising:
As shown in Figure 1, step 1: the acquisition of complex electromagnetic environment: being scanned acquisition to different regions environmental signal,
And it is recorded in a manner of scene signals；The radiofrequency field in environment electric signal is converted to using EMF antenna 1 first to be input to
In spectrum analyzer 3, further spectrum analyzer 3 is sampled by quadrature sampling mode, and I, Q two-way that sampling is obtained
Data are output to IQR data logger 2 and are kept records of；
As shown in Figure 1-3, step 2: field generating device 31 and Field probe the calibration of continuous wave signal field strength: being arranged in darkroom
21；Field generating device 31 is sequentially connected siding connector 8, directional coupler 6, power amplifier 5 and vector signal generator 4；
Vector signal generator 4 is set and exports continuous wave signal, adjusts continuous wave signal size, while visiting using field monitor observation field
First 21 field intensity value, when field strength reaches the actual scene signal strength that spectrum analyzer 3 records in step 1, record is sweared at this time
Measure output power A and the antenna polarization direction of signal generator 4；
As shown in Figs 1-4, step 3: the calibration of actual scene signal strength: field reception device 32, field hair are set in darkroom
The position of generating apparatus 31 and height are constant, and field generating device 31 is identical as 32 polarization direction of field reception device, and adjustment field fills
31 are set towards field reception device 32；Field reception device 32 is sequentially connected siding connector 8 and measuring receiver 9；Vector is arranged to believe
Number generator 4 exports continuous wave signal, and output power size is A, and measuring receiver 9 measures power to record at this time is B；Further
It connects IQR data logger 2 and arrives vector signal generator 4, field generating device 31 exports the scene letter recorded in step 1 at this time
Number, when the power that record measures under measuring receiver 9 is using the mode of band power is B, vector signal generator 4 is corresponding
Output power C；
As shown in Figs 1-4, step 4: darkroom simulation: being restored to equipment and location status in step 2,21 position of Field probe is
When vehicle testing reference point locations, vector signal generator 4 export IQR data logger 2 record scene signals, output power
It is C.
Vector signal generator 4 is SMW200A type vector signal generator.
In step 2: Field probe 21 is demarcated in 30MHz to 2000MHz frequency range using four probe methods, four probes
Reading average value as calibration value；Field probe 21 is demarcated in 2000MHz to 6000MHz using single probe.
As Figure 2-3, in step 2: distance of generating device 31 antenna oscillator in field apart from ground is greater than 0.25m, day
21 horizontal distance of phase of line centre distance Field probe is not less than 2m.
As Figure 2-3, in step 2: using single probe method calibration field strength when, probe apart from ground level (1 ±
0.05m), when being demarcated using four probe methods, the extended line alignment from top to bottom second of 31 antenna phase center of field generating device
A probe, the probe is apart from ground level (1 ± 0.05m).
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of darkroom analogy method of complex electromagnetic environment, it is characterised in that: include:
Step 1: the acquisition of complex electromagnetic environment: acquisition being scanned to different regions environmental signal, and with scene signals
Mode is recorded；The radiofrequency field in environment is converted to electric signal using EMF antenna (1) first and is input to spectrum analyzer
(3) in, spectrum analyzer (3) described further is sampled by quadrature sampling mode, and two number of I, Q that sampling is obtained
It is kept records of according to IQR data logger (2) is output to；
Step 2: the calibration of continuous wave signal field strength: field generating device (31) and Field probe (21) are set in darkroom；The field hair
Generating apparatus (31) is sequentially connected siding connector (8), directional coupler (6), power amplifier (5) and vector signal generator
(4)；The vector signal generator (4) output continuous wave signal is set, adjusts continuous wave signal size, while monitoring using field
Device observes the field intensity value of the Field probe (21), when field strength reaches the actual scene of spectrum analyzer described in step 1 (3) record
When signal strength, the output power A of the vector signal generator (4) and antenna polarization direction at this time are recorded；
Step 3: the calibration of actual scene signal strength: field reception device (32) being set in darkroom, the field generating device (31)
Position and height it is constant, the field generating device (31) is identical as field reception device (32) polarization direction, described in adjustment
Generating device (31) is towards the field reception device (32)；The field reception device (32) is sequentially connected siding connector (8)
And measuring receiver (9)；The vector signal generator (4) output continuous wave signal is set, and output power size is A, record
It is B that the measuring receiver (9), which measures power, at this time；The IQR data logger (2) is further connected to the vector signal
Generator (4), the scene signals recorded in field generating device (31) the output step 1 at this time, record are received when the measurement
When the power that machine (9) measures under the mode using band power is B, the corresponding output work of the vector signal generator (4)
Rate C；
Step 4: darkroom simulation: being restored to equipment and location status in step 2, the instant vehicle testing in Field probe (21) position
Reference point locations, the vector signal generator (4) export the scene signals of IQR data logger (2) record, output work
Rate is C.
2. a kind of darkroom analogy method of complex electromagnetic environment according to claim 1, it is characterised in that: the vector letter
Number generator (4) is SMW200A type vector signal generator.
3. a kind of darkroom analogy method of complex electromagnetic environment according to claim 2, it is characterised in that: in step 2:
The Field probe (21) is demarcated in 30MHz to 2000MHz frequency range using four probe methods, the reading average value of four probes
As calibration value；The Field probe (21) is demarcated in 2000MHz to 6000MHz using single probe.
4. a kind of darkroom analogy method of complex electromagnetic environment according to claim 3, it is characterised in that: in step 2:
Distance of field generating device (31) antenna oscillator apart from ground is greater than 0.25m, and antenna phase center is apart from the Field probe
(21) horizontal distance is not less than 2m.
5. a kind of darkroom analogy method of complex electromagnetic environment according to claim 4, it is characterised in that: in step 2:
When using single probe method calibration field strength, probe is described when being demarcated using four probe methods apart from ground level (1 ± 0.05) m
The extended line alignment of field generating device (31) antenna phase center is popped one's head in for second from top to bottom, and the probe is apart from ground level (1
±0.05)m。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111460900A (en) * | 2020-03-04 | 2020-07-28 | 中国工程物理研究院应用电子学研究所 | Method for quantitative evaluation of equivalence of complex electromagnetic environment construction |
| CN111458577A (en) * | 2020-03-04 | 2020-07-28 | 中国工程物理研究院应用电子学研究所 | Complex electromagnetic environment construction method |
| CN112763809A (en) * | 2020-12-21 | 2021-05-07 | 北京无线电计量测试研究所 | Electromagnetic environment signal dynamic simulation device and method |
| CN113325253A (en) * | 2021-05-17 | 2021-08-31 | 一汽奔腾轿车有限公司 | Automobile complex electromagnetic environment anti-interference test system and method |
| CN113406369A (en) * | 2021-06-17 | 2021-09-17 | 中国人民解放军63892部队 | Ultra-wideband time-varying motion multi-system multi-signal generation method |
| CN113433401A (en) * | 2021-06-01 | 2021-09-24 | 中国舰船研究设计中心 | Multi-source multi-channel complex electromagnetic environment simulation generation method |
| CN114355093A (en) * | 2022-03-18 | 2022-04-15 | 中汽研新能源汽车检验中心(天津)有限公司 | System and method for evaluating and improving reproduction effectiveness of electromagnetic environment of laboratory |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111460900A (en) * | 2020-03-04 | 2020-07-28 | 中国工程物理研究院应用电子学研究所 | Method for quantitative evaluation of equivalence of complex electromagnetic environment construction |
| CN111458577A (en) * | 2020-03-04 | 2020-07-28 | 中国工程物理研究院应用电子学研究所 | Complex electromagnetic environment construction method |
| CN111460900B (en) * | 2020-03-04 | 2023-04-28 | 中国工程物理研究院应用电子学研究所 | Complex electromagnetic environment construction equivalence quantitative evaluation method |
| CN112763809A (en) * | 2020-12-21 | 2021-05-07 | 北京无线电计量测试研究所 | Electromagnetic environment signal dynamic simulation device and method |
| CN112763809B (en) * | 2020-12-21 | 2023-07-25 | 北京无线电计量测试研究所 | Electromagnetic environment signal dynamic simulation device and method |
| CN113325253A (en) * | 2021-05-17 | 2021-08-31 | 一汽奔腾轿车有限公司 | Automobile complex electromagnetic environment anti-interference test system and method |
| CN113433401A (en) * | 2021-06-01 | 2021-09-24 | 中国舰船研究设计中心 | Multi-source multi-channel complex electromagnetic environment simulation generation method |
| CN113406369A (en) * | 2021-06-17 | 2021-09-17 | 中国人民解放军63892部队 | Ultra-wideband time-varying motion multi-system multi-signal generation method |
| CN113406369B (en) * | 2021-06-17 | 2024-04-30 | 中国人民解放军63892部队 | Ultra-wideband time-varying motion multi-system multi-signal generation method |
| CN114355093A (en) * | 2022-03-18 | 2022-04-15 | 中汽研新能源汽车检验中心(天津)有限公司 | System and method for evaluating and improving reproduction effectiveness of electromagnetic environment of laboratory |
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