CN204439727U - A kind of shield effectiveness test macro - Google Patents
A kind of shield effectiveness test macro Download PDFInfo
- Publication number
- CN204439727U CN204439727U CN201520108754.9U CN201520108754U CN204439727U CN 204439727 U CN204439727 U CN 204439727U CN 201520108754 U CN201520108754 U CN 201520108754U CN 204439727 U CN204439727 U CN 204439727U
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- shield
- antenna
- test macro
- signal generator
- signal receiver
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Abstract
The utility model relates to electromangnetic spectrum field, particularly a kind of electromagnet shield effect test macro.Its technical scheme is: a kind of shield effectiveness test macro, is characterized in that: comprise emitting antenna (1), signal generator (2), receiving antenna (3), attenuator (4), signal receiver (5) and connection cable; Described emitting antenna (1) is at least 3 of orthogonal laying common insulated conductor rings on three-dimensional outside shield; Described signal generator (2) is for generation of Injection Current signal; Described receiving antenna (3) is toroidal magnetic field antenna; Described signal receiver (5) is for receiving the field signal being leaked to shield inside; Described connection cable for connecting described signal generator (2) and emitting antenna (1), and connects described signal receiver (5), attenuator (4) and receiving antenna (3).The shield effectiveness that the utility model is applicable to the narrow and small wall-attaching type shield of shield outer space detects.
Description
Technical field
The utility model relates to electromangnetic spectrum field, particularly a kind of electromagnet shield effect test macro.
Background technology
In the tunnel type protection works such as people's air defense, generally on coating inwall, shield (being called " wall-attaching type shield ") made by direct adherent installation sheet steel, and carries out corresponding shielding processing to the hole seam on crossline and housing.
The electromagnet shield effect detection of shield is the important step of protection works quality control.Therefore, detect the shield effectiveness of screened room strictly to follow the measuring method that standard specifies and carry out.For detection and the computing method of the middle-size and small-size screened room shield effectiveness in ground, can according to existing GB/T 12190-2006 " measuring method of electromagnetic shielding chamber shield effectiveness ", but for " wall-attaching type shield ", directly be connected with massif or ground outside barrier shield, there is no required detection space, and volume is large, shape is irregular polyhedron with plane figure, none is applicable for existing test macro.
Utility model content
The purpose of this utility model is: provide a kind of shield effectiveness test macro being applicable to wall-attaching type shield.
The technical solution of the utility model is: a kind of shield effectiveness test macro, is characterized in that: comprise emitting antenna, signal generator, receiving antenna, attenuator, signal receiver and connection cable;
Described emitting antenna is at least 3 of orthogonal laying common insulated conductor rings on three-dimensional outside shield;
Described signal generator is for generation of Injection Current signal;
Described receiving antenna is toroidal magnetic field antenna;
Described signal receiver is leaked to the field signal of shield inside for receiving;
Described connection cable for connecting described signal generator and emitting antenna, and connects described signal receiver, attenuator and receiving antenna.
Described shield effectiveness test macro also comprises power amplifier, prime amplifier.
The equipment that the present invention is directed to coil antenna in existing shield effectiveness test macro or whip antenna and connection thereof cannot be placed on small space problem, in advance the common insulated conductor ring of orthogonal laying on three-dimensional outside shield.Because shield shell is normally spliced with the rectangle steel plate of 1.0 ~ 2.0m, seam in length and breadth (weld seam or the seam that presses) on it is then the seamed edge being parallel to screened room (body), the direction of seam lays respectively on three orthogonal directions, therefore, insulated conductor ring should arranged respectively on three directions of shield shell, and it is mutually orthogonal, like this, insulated conductor ring is vertical with the weld seam of shield shell, after powering up to insulated conductor ring, the flow direction of electric current is vertical with seam, the magnetic field of current excitation is parallel with seam, shield inside is coupled to by seam by there being stronger magnetic field, and received equipment Inspection is arrived, the finally webbed current flow path of shape around shield shell.Conductor loop in each direction at least lay 1, quantity number depend primarily on the size of shield and the size of signal generator power, shield is larger, and signal generator power is less, and the quantity of conductor loop is more.Mutually orthogonal on three-dimensional, be in the same direction parallel to each other lay conductor loop, as emitting antenna, signal generator is placed in the massif of shield outside or the wall hole of blindage, be energized to the conductor loop preset by signal generator during test, then conductor loop produces Magnetic Field Source outward at shield, simultaneously at the inner electromagnetic field being leaked into shield inside by receiving antenna and signal receiver detection of shield.
The shield effectiveness that the utility model is applicable to the narrow and small wall-attaching type shield of shield outer space detects.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model formation schematic diagram.
Embodiment
Embodiment 1: see accompanying drawing 1, a kind of shield effectiveness test macro, is characterized in that: comprise emitting antenna 1, signal generator 2, receiving antenna 3 attenuator 4, signal receiver 5 and connection cable thereof;
Described emitting antenna 1 is at least 3 of orthogonal laying common insulated conductor rings on three-dimensional outside shield;
Described signal generator 2 is for generation of Injection Current signal;
Described receiving antenna 3 is toroidal magnetic field antenna;
Described signal receiver 5 is for receiving the field signal being leaked to shield inside;
Described connection cable for connecting described signal generator 2 and emitting antenna 1, and connects described signal receiver 5, attenuator 4 and receiving antenna 3.
Embodiment 2: a kind of shield effectiveness test macro as described in Example 1, is characterized in that: also comprise power amplifier, prime amplifier.
Claims (2)
1. a shield effectiveness test macro, is characterized in that: comprise emitting antenna (1), signal generator (2), receiving antenna (3), attenuator (4), signal receiver (5) and connection cable;
Described emitting antenna (1) is at least 3 of orthogonal laying common insulated conductor rings on three-dimensional outside shield;
Described signal generator (2) is for generation of Injection Current signal;
Described receiving antenna (3) is toroidal magnetic field antenna;
Described signal receiver (5) is for receiving the field signal being leaked to shield inside;
Described connection cable for connecting described signal generator (2) and emitting antenna (1), and connects described signal receiver (5), attenuator (4) and receiving antenna (3).
2. a shield effectiveness test macro as claimed in claim 1, is characterized in that: also comprise power amplifier, prime amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108754.9U CN204439727U (en) | 2015-02-16 | 2015-02-16 | A kind of shield effectiveness test macro |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108754.9U CN204439727U (en) | 2015-02-16 | 2015-02-16 | A kind of shield effectiveness test macro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204439727U true CN204439727U (en) | 2015-07-01 |
Family
ID=53607577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520108754.9U Expired - Fee Related CN204439727U (en) | 2015-02-16 | 2015-02-16 | A kind of shield effectiveness test macro |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204439727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678190A (en) * | 2015-02-16 | 2015-06-03 | 第二炮兵工程设计研究院 | System and method for testing shielding efficacy |
| CN105301549A (en) * | 2015-11-25 | 2016-02-03 | 广西电网有限责任公司电力科学研究院 | Method and system for testing magnetic shielding of current transformer by using three-dimensional magnetic field |
| CN109239624A (en) * | 2018-08-30 | 2019-01-18 | 江苏赛诺格兰医疗科技有限公司 | A kind of test macro and test method detecting magnetic shielding material magnetic shield performance |
-
2015
- 2015-02-16 CN CN201520108754.9U patent/CN204439727U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678190A (en) * | 2015-02-16 | 2015-06-03 | 第二炮兵工程设计研究院 | System and method for testing shielding efficacy |
| CN104678190B (en) * | 2015-02-16 | 2024-02-09 | 第二炮兵工程设计研究院 | Shielding efficiency test method |
| CN105301549A (en) * | 2015-11-25 | 2016-02-03 | 广西电网有限责任公司电力科学研究院 | Method and system for testing magnetic shielding of current transformer by using three-dimensional magnetic field |
| CN105301549B (en) * | 2015-11-25 | 2018-10-12 | 广西电网有限责任公司电力科学研究院 | A kind of method and system for testing current transformer magnetic screen using three-dimensional magnetic field |
| CN109239624A (en) * | 2018-08-30 | 2019-01-18 | 江苏赛诺格兰医疗科技有限公司 | A kind of test macro and test method detecting magnetic shielding material magnetic shield performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20190216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |