CN106645875B - The test macro of field wire coupled level under wide-band stationary field - Google Patents
The test macro of field wire coupled level under wide-band stationary field Download PDFInfo
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- CN106645875B CN106645875B CN201611240071.4A CN201611240071A CN106645875B CN 106645875 B CN106645875 B CN 106645875B CN 201611240071 A CN201611240071 A CN 201611240071A CN 106645875 B CN106645875 B CN 106645875B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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Abstract
The invention discloses a kind of test macros of field wire coupled level under wide-band stationary field, comprising: for generating the signal generation apparatus of wide-band stationary field；Both ends connect loaded tested cable, and the tested cable surface is provided with the electric field probe for detecting electric field strength at the tested cable different location；With the optical fiber level measurement device of the load connection, the field wire coupled level generated under wide-band stationary field for measuring the tested cable.Electric field probe is arranged in tested cable surface in the present invention, current probe in the prior art is substituted, interference level can effectively be shielded, and when antenna emits a certain fixed field strong electromagnetic wave, electric field strength incident at tested cable different location can be obtained, the measuring accuracy of the test macro of field wire coupled level under wide-band stationary field is effectively improved.
Description
Technical field
The present invention relates to electronics technology, in particular to the test of field wire coupled level under a kind of wide-band stationary field
System.
Background technique
In the case where shielding good situation, the field wire coupling under electromagnetic irradiation become the main influence of installation electromagnetical susceptibility because
Element, the field wire coupled level tested under wide-band stationary field are capable of the electromagnetic susceptibility of assessment equipment, are the electromagnetic compatibility of equipment
Rectification provides important evidence.
In the prior art, the test method of the field wire coupled level under wide-band stationary field is current probe method of testing, should
Method is to generate standard sinusoidal signal of steady state under semi-anechoic chamber environment using signal generator, pass through the function of corresponding frequency band
After rate amplifier carries out signal amplification, it is fed into the feed end of transmitting antenna, generates radiated electric field, then by all types of tested cables
It is arranged on the good standard testing table of ground connection, two termination conventional, electric-resistances or patch type precision resistance, finally by contactless electricity
Probe clip is flowed in tested cable different location, and current probe output end terminates measuring receiver or spectrum analyzer, connects with measurement
The measurement result of receipts machine or spectrum analyzer is final field wire coupled level test result.The defect of this method is: field
Under irradiation, current probe sheet can couple substantial portion of interference level as loop construction, which is introduced into measurement knot
In fruit, the field wire coupled interference level finally obtained can be made to generate biggish deviation；The conventional, electric-resistance or patch type essence of two terminations
Cipher telegram resistance will be unable to be described with lumped parameter in radio frequency, microwave band, it is necessary to distributed model be used, to make field on the other hand
Line coupled interference level generates biggish deviation.In addition, the data that this method obtains are frequency domain data, numeric field data when needed
In application scenarios, complexity is calculated, and time domain detailed information can not be restored completely.
Therefore, how to improve the measuring accuracy of the test macro of field wire coupled level under wide-band stationary field is this field skill
Art personnel's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide a kind of test macros of field wire coupled level under wide-band stationary field, effectively improve width
The measuring accuracy of the test macro of field wire coupled level under frequency range stationary field.
In order to solve the above technical problems, the present invention provides a kind of test system of field wire coupled level under wide-band stationary field
System, comprising:
For generating the signal generation apparatus of wide-band stationary field；
Both ends connect loaded tested cable, and the tested cable surface is provided with for detecting the tested cable not
With the electric field probe of electric field strength at position；
The optical fiber level measurement device connected with the load, for measuring the tested cable under wide-band stationary field
The field wire coupled level of generation.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the signal generation apparatus
Include:
For generating the signal generator of the wide-band stationary field；
It is connected with the signal generator, for amplifying the power amplifier of the wide-band stationary field；
It is connected with the power amplifier, for emitting the transmitting antenna of amplified wide-band stationary field.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the load includes first
Coaxial load and the second coaxial load, first coaxial load are connected with described tested cable one end, and described second is coaxial negative
It carries and is connected by coaxial connector with the other end of the tested cable.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the optical fiber level measurement
Device includes:
It is connected with the vacant end of the coaxial connector as signal output end, for being generated according to the tested cable
Level output time-domain signal or frequency-region signal oscillograph；
It is connected with the oscillograph, is used for transmission the optic module of the time-domain signal or frequency-region signal to computer；
It is connected with the optic module, for carrying out data processing output coupling electricity to the time-domain signal or frequency-region signal
The computer of level values.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the oscillograph with it is described
Optic module is connected by cable, and the optic module is connect with the computer by optical fiber.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the optic module setting
In shield.
Preferably, under above-mentioned wide-band stationary field in the test macro of field wire coupled level, the load and the light
Fine level measurement device shields p-wire connection by BNC high.
It preferably, further include for carrying under above-mentioned wide-band stationary field in the test macro of field wire coupled level
The insulator of tested cable is stated, the insulation thickness range is 5cm-10cm.
The test macro of field wire coupled level under a kind of wide-band stationary field provided by the present invention, comprising: for generating width
The signal generation apparatus of frequency range stationary field；Both ends connect loaded tested cable, and the tested cable surface, which is provided with, to be used for
Detect the electric field probe of electric field strength at the tested cable different location；Optical fiber level measurement with the load connection fills
It sets, the field wire coupled level generated under wide-band stationary field for measuring the tested cable.
Due to the coupled level that current probe in the prior art detects, current probe sheet as loop construction, with by
Examination cable generated under wide-band stationary field level coupling when by interference level after couple, lead to finally obtained coupling
Level is inaccurate, and current probe detection method can not directly obtain the vector field source incidence for having different distance with cable system
To the incident field intensity of cable different location.Electric field probe is arranged in tested cable surface in the present invention, and the structure of electric field probe is by three
Part forms: probe unit (usually dipole antenna or small loop antenna), transmission unit (optical fiber) and measuring unit.Due to visiting
The signal that head detects is smaller, while requiring probe as small as possible to measurement environmental perturbation, therefore will be detected by electro-optic conversion
Signal be converted to optical signal, and transmitted by optical fiber, and use photoelectric conversion in receiving end, realize that electric field strength is surveyed
Amount.Electric field probe combines optical fiber level measurement device, and current probe in the prior art is substituted, and can effectively shield interference electricity
It is flat, effectively improve the measuring accuracy of the test macro of field wire coupled level under wide-band stationary field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 illustrates for the test macro of field wire coupled level under a kind of wide-band stationary field provided by the embodiment of the present invention
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 1, survey of the Fig. 1 for field wire coupled level under a kind of wide-band stationary field provided by the embodiment of the present invention
Test system schematic diagram.
In a specific embodiment, a kind of test macro of field wire coupled level under wide-band stationary field, packet are provided
It includes:
For generating the signal generation apparatus of wide-band stationary field；
Both ends are connected with the tested cable of load 05, and the tested cable surface is provided with for detecting the tested cable
The electric field probe 04 of electric field strength at 06 different location；
The optical fiber level measurement device being connect with the load 05, for measuring the tested cable in wide-band stationary field
The field wire coupled level of lower generation.
Wherein, in semi-anechoic chamber environment, the main composed structure of anechoic chamber, is mainly screened room and inhales whole system
Wave material.Controller control signal generating device transmitting antenna generates required frequency point, frequency range and field strength.Tested cable is placed
On insulator 08, precision load 05 is installed at tested cable both ends, connect optical fiber level measurement dress with one of load 05
It sets, the field wire coupled level generated under wide-band stationary field for measuring the tested cable.Place electric field induction probe in
At tested cable, for monitoring the electric field strength at tested cable, the field intensity value of monitoring is carried out by optical fiber level measurement device
Level measurement, and transmit the result in field strength monitor and monitored, whole system is installed on earthing test table, is carried out
Test.
It should be pointed out that the tested cable is the tested cable 06 of the profiled shapes such as bending intersection, electric field probe 04
It is all the same in the field strength that any position of tested cable 06 detects.In the present embodiment, electric field probe 04 uses ETS
The electric field probe 04 of HI6153FM model can also be other types of electric field probe 04, in protection scope.
Due to the electric field strength that current probe in the prior art detects, current probe sheet as loop construction, with by
Examination cable generated under wide-band stationary field level coupling when by interference level after couple, lead to finally obtained coupling
Level is inaccurate, and electric field probe 04 is arranged in tested cable surface in the present invention, and current probe in the prior art, energy is substituted
Enough effectively shielding interference levels, effectively improve the measuring accuracy of the test macro of field wire coupled level under wide-band stationary field.
Under above-mentioned wide-band stationary field on the basis of the test macro of field wire coupled level, the signal generation apparatus packet
It includes:
For generating the signal generator 01 of the wide-band stationary field；
It is connected with the signal generator 01, for amplifying the power amplifier 02 of the wide-band stationary field；
It is connected with the power amplifier 02, for emitting the transmitting antenna of amplified wide-band stationary field.
Specifically, the output end of signal generator 01 is connected to the input terminal of power amplifier 02, power amplifier 02
Output end connection transmitting antenna feed end, connection type is GPIB connection, and controller control signal generator 01 generates surely
Fixed wide-band stationary field, provides magnetic field environment.
In the present embodiment, signal generator 01 uses Agilent 5183A, and power amplifier 02 uses BONN low-frequency range
Power amplifier 02 and AR microwave band power amplifier 02, transmitting antenna using AATP10K100MM2, ETS 3109PX,
Schwarzbecks 9128E,AR ATH800M5GA,AR ATH2G8A,AR ATH7G18M1.Signal generator 01, power are put
Big device 02 and transmitting antenna include but is not limited to the above-mentioned type, can also be other types, in protection scope.
Under above-mentioned wide-band stationary field on the basis of the test macro of field wire coupled level, the load 05 includes first
Coaxial load 05 and the second coaxial load 05, first coaxial load 05 are connected with described tested cable one end, and described second
Coaxial load 05 is connected by coaxial connector 07 with the other end of the tested cable.
Wherein, the terminating load 05 using coaxial precision resistance as tested cable 06 effectively avoids high frequency field spoke
According to Distribution Effect offset issue caused by measurement result of lower resistance.One terminated coaxial precision load 05 of tested cable 06,
The other end connects coaxial precision load 05 by coaxial connector 07, and coaxial connector 07 includes but is not limited to the coaxial adapter of T-type,
It can also be other connectors for having multiple terminals, in protection scope, the remaining one end of the coaxial adapter of T-type is as field
Line coupled flutter output end is connect with optical fiber level measurement device.
In the present embodiment, coaxial load 05 uses 50 Ω coaxial load 05 of Schwarzbeck, can also be other classes
The load 05 of type, in protection scope.
Under above-mentioned wide-band stationary field on the basis of the test macro of field wire coupled level, the optical fiber level measurement dress
It sets and includes:
It is connected with the vacant end of the coaxial connector 07 as signal output end, for according to the tested cable 06
The level output time-domain signal of generation or the oscillograph 09 of frequency-region signal；
It is connected with the oscillograph 09, is used for transmission the optic module of the time-domain signal or frequency-region signal to computer 11
10；
It is connected with the optic module 10, for carrying out data processing output coupling to the time-domain signal or frequency-region signal
The computer 11 of level value.
Wherein, oscillograph 09 switches to the level that Fast Fourier Transform (FFT) FFT mode is generated according to the tested cable 06
Output time-domain signal or frequency-region signal, the oscillograph 09 with FFT function can obtain the time domain letter of field wire coupled level simultaneously
Breath and time-domain information, have expanded the systematic difference scene.In the present embodiment, the preferred Agilent DSOX3102A of oscillograph 09
Optic module 10 uses EMCT photoelectric converter.
Further, in order to accelerate signaling rate, the test of field wire coupled level under above-mentioned wide-band stationary field
In system, the oscillograph 09 is connected with the optic module 10 by cable, the optic module 10 and the computer 11
It is connected by optical fiber.
Under above-mentioned wide-band stationary field on the basis of the test macro of field wire coupled level, the optic module 10 is arranged
In shield.
Specifically, placing a shield with threading waveguide at earthing test table feet, light is placed in shield
The LAN mouth of fiber module 10, oscillograph 09 is connect with the LAN of optic module 10 mouth by cable.
Further, in order to avoid the interference level that test macro itself couples to the greatest extent, in above-mentioned wide-band
Under stationary field in the test macro of field wire coupled level, the load 05 passes through BNC Gao Ping with the optical fiber level measurement device
Cover p-wire connection.Wherein, it is that coaxial cable height shields p-wire that BNC high, which shields p-wire, can effectively shield interference level.
Further, in order not to making in the test macro of field wire coupled level, to further include under above-mentioned wide-band stationary field
For carrying the insulator 08 of the tested cable, 08 thickness range of insulator is 5cm-10cm.
Wherein, the thickness of insulator 08 includes but is not limited to 5cm-10cm, and the material of insulator 08 can be timber, plastics
Etc. the material that can effectively insulate.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the ordinary skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for personnel, these improvement
It is also fallen within the protection scope of the claims of the present invention with modification.
Claims (6)
1. the test macro of field wire coupled level under a kind of wide-band stationary field characterized by comprising
For generating the signal generation apparatus of wide-band stationary field；
Both ends connect loaded tested cable, and the tested cable surface is provided with for detecting the tested cable difference position
Set the electric field probe of place's electric field strength；
With the optical fiber level measurement device of the load connection, generated under wide-band stationary field for measuring the tested cable
Field wire coupled level；
The signal generation apparatus includes:
For generating the signal generator of the wide-band stationary field；
It is connected with the signal generator, for amplifying the power amplifier of the wide-band stationary field；
It is connected with the power amplifier, for emitting the transmitting antenna of amplified wide-band stationary field；
The load includes the first coaxial load and the second coaxial load, first coaxial load and described tested cable one end
It is connected, second coaxial load is connected by coaxial connector with the other end of the tested cable.
2. the test macro of field wire coupled level under wide-band stationary field as described in claim 1, which is characterized in that the light
Fine level measurement device includes:
It is connected with the vacant end of the coaxial connector as signal output end, the electricity for being generated according to the tested cable
The oscillograph of flat output time-domain signal or frequency-region signal；
It is connected with the oscillograph, is used for transmission the optic module of the time-domain signal or frequency-region signal to computer；
It is connected with the optic module, for carrying out data processing output coupling level value to the time-domain signal or frequency-region signal
The computer.
3. the test macro of field wire coupled level under wide-band stationary field as claimed in claim 2, which is characterized in that described to show
Wave device is connected with the optic module by cable, and the optic module is connect with the computer by optical fiber.
4. the test macro of field wire coupled level under wide-band stationary field as claimed in claim 3, which is characterized in that the light
Fiber module is set in shield.
5. such as the test macro of field wire coupled level under the described in any item wide-band stationary fields of Claims 1-4, feature exists
In the load shields p-wire by BNC high with the optical fiber level measurement device and connect.
6. the test macro of field wire coupled level under wide-band stationary field as claimed in claim 5, which is characterized in that further include
For carrying the insulator of the tested cable, the insulation thickness range is 5cm-10cm.
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| CN101344557A (en) * | 2008-09-04 | 2009-01-14 | 北京航空航天大学 | Radiation sensitivity test method of protection power amplifier |
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