CN206671428U - A kind of micro-wave screening takes shield effectiveness test system - Google Patents
A kind of micro-wave screening takes shield effectiveness test system Download PDFInfo
- Publication number
- CN206671428U CN206671428U CN201720302176.1U CN201720302176U CN206671428U CN 206671428 U CN206671428 U CN 206671428U CN 201720302176 U CN201720302176 U CN 201720302176U CN 206671428 U CN206671428 U CN 206671428U
- Authority
- CN
- China
- Prior art keywords
- shield effectiveness
- micro
- wave screening
- test system
- reverberation chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model belongs to micro-wave screening and takes shield effectiveness detection field, more particularly to a kind of micro-wave screening takes shield effectiveness test system.To solve the problems, such as under resonance condition to take micro-wave screening the data inaccuracy of shield effectiveness test, the utility model provides a kind of micro-wave screening and takes shield effectiveness test system.A kind of micro-wave screening takes shield effectiveness test system, including reverberation chamber, signal generator, transmitting antenna, manikin and receiving transducer.The utility model is by building a new controllable electromagnetic environment --- and reverberation chamber takes shield effectiveness test to carry out micro-wave screening, and the test system does not need absorbing material and big power amplifier, saved testing cost.In addition, the device efficiently avoid the influence to bearing shield effectiveness caused by test result under resonance condition, the shield effectiveness of Scientific evaluation shield microwaves screening clothing, the assessment that shield effectiveness is taken for micro-wave screening provides reasonable, science data.
Description
Technical field
The utility model belongs to micro-wave screening and takes shield effectiveness detection field, more particularly to a kind of micro-wave screening clothes shielding effect
Can test system.
Background technology
The effect of micro-wave screening clothes mainly reduces external electromagnetic ripple to the human body in screening clothing and the influence of equipment.It is existing
Micro-wave screening clothes shielding method of testing Main Basiss《GB/T 23463-2009 protective clothes microwave radiation protecting takes》, test
Specific method be in anechoic chamber, or open area construction one electromagnetic environment, body model is placed in the environment,
And a field intensity probe is placed inside body model, in the case where test field strength keeps constant, by comparing body model
Before and after wearing screening clothing, the field strength size ratio come detected by its internal field intensity probe is imitated to calculate the shielding of the screening clothing
Energy.But prior art exist one it is fatal the defects of, i.e., it is difficult to ensure that the repeatability of experiment, a large amount of tests and emulate tables of data
Bright, mould when wearing that field strength is not than wearing screening clothing inside model's model of screening clothing is occurring in this method of testing on many frequencies
The bigger phenomenon of field strength inside special model.This phenomenon Producing reason is due to have different degrees of gap, hole on clothes
Hole and opening, the electromagnetic wave into screening clothing constantly reflect in screening clothing, are overlapped mutually, and form standing wave harmonic, cause to shield
It is extremely complex to cover electromagnetic environment in clothes, the slightly change of screening clothing wearing effect, when can cause field intensity probe position and
Be caused by standing wave field strength offset, when but caused by resonance field strength increase severely, test data change greatly, poor repeatability, test number
According to the design and application that can not instruct screening clothing.
According to the calculation formula of shield effectiveness：Shield effectiveness SE=20Log (E1/E2), wherein E1 are not wear screening clothing feelings
The electric field intensity values measured under condition, E2 are the electric field intensity values measured in the case where wearing screening clothing.In the ideal situation, E2<
E1, shield effectiveness for just, but due to inside screening clothing electromagnetic environment it is complicated, in the conventional method, when test point position produce it is humorous
It is the field intensity value under resonant condition due to E2 after shaking, E1 is the field intensity value under non-resonant condition, can cause E2>E1, shield effectiveness
It is negative, the field strength for the wearing screening clothing wrong conclusion bigger than the field strength for not wearing screening clothing is drawn, so as to cause measured value and screening clothing
Actual shield effectiveness is not consistent, therefore the data of test are inaccurate obtained by existing method.
The method of the present invention uses Reverberation room method, and the field strength that can make test point by reverberation chamber is not being worn screening clothing and worn
Resonant condition is can reach in the case of screening clothing, so that the E1 and E2 that measure are the test value of resonant condition, two humorous
Value of shaking is compared, and method of testing is more scientific, avoids test data poor repeatability and test result and actual shield effectiveness not phase
The problem of symbol, so as to preferably instruct the design improvement of screening clothing and effect assessment work.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of micro-wave screening to take shield effectiveness test system, resonance shape is avoided
State is on influence caused by test result.A kind of micro-wave screening, which takes shield effectiveness test system, includes reverberation chamber, signal generator, hair
Penetrate antenna, manikin and receiving transducer；The receiving transducer is placed on inside manikin, and transmitting antenna is put with manikin
In reverberation chamber, signal generator is connected by coaxial cable with transmitting antenna, and signal generator can be both placed on outside reverberation chamber,
Also can be placed on inside reverberation chamber.
The reverberation chamber is the screened room built by high reflection material.
The receiving transducer includes field intensity probe or reception antenna.
The reverberation chamber can select mechanical stirring or frequency stirred type, for the reverberation chamber of mechanical stirring, need to pacify
Fill special-purpose machinery agitating device.
The beneficial effects of the utility model are：
1) device efficiently avoid the influence to bearing shield effectiveness caused by test result under resonance condition, avoid
The influence of standing wave harmonic, test data repeatability is high, is advantageous to the ratio of data between the popularization of method of testing and laboratory
It is right.
2) test of screening clothing shield effectiveness is more accurate, takes the assessment of shield effectiveness for micro-wave screening and improvement provides conjunction
Reason, the data of science simultaneously provide accurate data support.
3) absorbing material and big power amplifier are not needed when testing, has saved testing cost, relative to anechoic chamber, reverberation chamber
Cost is lower, and test dynamic range is bigger.
Brief description of the drawings
Accompanying drawing 1 is that micro-wave screening takes shield effectiveness test system structure schematic diagram.
Embodiment
To avoid under resonance condition, the influence to bearing shield effectiveness caused by test result, the utility model provide one
Kind micro-wave screening takes shield effectiveness test system, and the utility model is described in detail below in conjunction with the accompanying drawings.
Accompanying drawing 1 is that micro-wave screening takes shield effectiveness test system structure schematic diagram, as shown in figure 1, the system includes reverberation
Room, signal generator, transmitting antenna, manikin and receiving transducer；The reverberation chamber is the screen built by high reflection material
Room is covered, the luminance factor of inner surface is typically higher than screened room.The receiving transducer is placed on inside manikin, transmitting antenna and people
Body Model is placed in reverberation chamber, and signal generator is connected by coaxial cable with transmitting antenna, and signal generator can both be placed on mixed
Outdoor is rung, can be also placed on inside reverberation chamber.Receiving transducer can be field intensity probe or reception antenna.In order to allow receiving transducer
Measured position reaches resonant condition, there is two kinds of embodiments, and one kind is mechanical agitation type test, and one kind is that frequency stirring-type is surveyed
Examination, for the reverberation chamber of mechanical stirring, need to install special-purpose machinery agitating device.
This embodiment is only the preferable embodiment of the utility model, but the scope of protection of the utility model not office
It is limited to this, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with
Scope of the claims is defined.
Claims (4)
1. a kind of micro-wave screening takes shield effectiveness test system, it is characterised in that including reverberation chamber, signal generator, transmitting day
Line, manikin and receiving transducer；The receiving transducer is placed on inside manikin, and transmitting antenna is placed on mixed with manikin
Interior is rung, signal generator is connected by coaxial cable with transmitting antenna, and signal generator can be both placed on outside reverberation chamber, also may be used
It is placed on inside reverberation chamber.
2. a kind of micro-wave screening takes shield effectiveness test system according to claim 1, it is characterised in that the reverberation chamber is
The screened room built by high reflection material.
3. a kind of micro-wave screening takes shield effectiveness test system according to claim 1, it is characterised in that the receiving transducer
Including field intensity probe or reception antenna.
4. a kind of micro-wave screening takes shield effectiveness test system according to claim 1, it is characterised in that the reverberation chamber can
To select mechanical stirring or frequency stirred type, the reverberation chamber for mechanical stirring is, it is necessary to install special-purpose machinery agitating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302176.1U CN206671428U (en) | 2017-03-24 | 2017-03-24 | A kind of micro-wave screening takes shield effectiveness test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302176.1U CN206671428U (en) | 2017-03-24 | 2017-03-24 | A kind of micro-wave screening takes shield effectiveness test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671428U true CN206671428U (en) | 2017-11-24 |
Family
ID=60373465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720302176.1U Expired - Fee Related CN206671428U (en) | 2017-03-24 | 2017-03-24 | A kind of micro-wave screening takes shield effectiveness test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206671428U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940405A (en) * | 2017-03-24 | 2017-07-11 | 华北电力大学 | A kind of micro-wave screening takes shield effectiveness test system |
| CN108776266A (en) * | 2018-07-19 | 2018-11-09 | 西安工程大学 | A kind of electromagnetic shielding dark room and its detection method for the detection of clothes shield effectiveness |
-
2017
- 2017-03-24 CN CN201720302176.1U patent/CN206671428U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940405A (en) * | 2017-03-24 | 2017-07-11 | 华北电力大学 | A kind of micro-wave screening takes shield effectiveness test system |
| CN108776266A (en) * | 2018-07-19 | 2018-11-09 | 西安工程大学 | A kind of electromagnetic shielding dark room and its detection method for the detection of clothes shield effectiveness |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103308798B (en) | Method for testing shielding effectiveness of electromagnetic shielding material | |
| CN106940405A (en) | A kind of micro-wave screening takes shield effectiveness test system | |
| CN102981086B (en) | Analysis and measurement method for electromagnetic radiation of voltage driven radiation source | |
| CN103543342A (en) | Method and system for testing shielding performance of cable | |
| CN207650157U (en) | A kind of detection device for door and window sound insulation property | |
| CN202837416U (en) | System for testing shielding performance of cables | |
| CN104849592B (en) | A kind of radio telescope wideband electromagnetic shield effectiveness detection system and detection method | |
| CN207623415U (en) | 5G multiple antennas complete machine antenna measurement platforms | |
| CN206671428U (en) | A kind of micro-wave screening takes shield effectiveness test system | |
| CN106443208A (en) | Shielding effectiveness measuring method, measuring system and calibration system of shielding material | |
| CN103777099B (en) | A kind of based on reverberation chamber when textile material shield effectiveness method of testing | |
| CN205157664U (en) | Multi -functional electro magnetic compatibility test laboratory | |
| CN111929510A (en) | Power equipment electromagnetic radiation detection system | |
| CN102955091B (en) | Shielding shelter low frequency shield effectiveness test and evaluation method under the condition of whole cabin | |
| CN105162929A (en) | Test system and test device used by the same | |
| CN203772976U (en) | Flange coaxial testing device for shielding effectiveness of planar electromagnetic shielding material | |
| CN109839553A (en) | A kind of EMC Design of Automatic Test System based on virtual instrument | |
| CN209030274U (en) | A kind of test box for mobile phone electromagnetic compatibility test | |
| CN109884412B (en) | Ultra-wideband electric field probe adopting U-shaped structure | |
| CN206743253U (en) | A kind of wireless test and the device for being easy to convert built-in aerial | |
| CN209387884U (en) | The test device of shielding property | |
| CN205643425U (en) | A conduction screened room for electromagnetic compatibility test | |
| Leferink et al. | Shielding effectiveness measurements using a reverberation chamber | |
| Cordill et al. | Shielding effectiveness of composite and aluminum aircraft, model and measurement comparison | |
| Leferink et al. | Microwave-range shielding effectiveness measurements using a dual vibrating intrinsic reverberation chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20190324 |