CN207744337U - A kind of high high radiation field safeguard structure for aviation airborne equipment - Google Patents
A kind of high high radiation field safeguard structure for aviation airborne equipment Download PDFInfo
- Publication number
- CN207744337U CN207744337U CN201721709489.5U CN201721709489U CN207744337U CN 207744337 U CN207744337 U CN 207744337U CN 201721709489 U CN201721709489 U CN 201721709489U CN 207744337 U CN207744337 U CN 207744337U
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- Prior art keywords
- metal shell
- accommodating space
- shell
- connector
- airborne equipment
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- 230000005855 radiation Effects 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model is related to a kind of high high radiation field safeguard structures for aviation airborne equipment, include metal shell, are inside formed with shell accommodating space, have on the side wall of the metal shell and penetrate interface；Electromagnetic susceptibility circuit, in the shell accommodating space；Metal shell connector, it is placed in described penetrate in interface, the first end of the metal shell connector is in outside the shell accommodating space, the second end of the metal shell connector is in the shell accommodating space, and the metal shell connector constitutes continuous Faradic electricity magnetic screen basket structure with the metal shell；The beneficial effects of the utility model are：The electronic circuit for effectivelying prevent HIRF sensitive to airborne equipment inside generates interference.
Description
Technical field
The utility model is related to a kind of high high radiation field safeguard structures for aviation airborne equipment.
Background technology
High high radiation field（HIRF）It is a kind of electromagnetic environment often met in aviation airborne equipment life-cycle processes,
Electronic circuit to effectively prevent HIRF sensitive to airborne equipment inside generates interference, carries out at electromagnetic shielding and filtering
Reason.
Previous high high radiation field protection Design is high with the specific product degree of coupling, be unfavorable for realizing the modularization of circuit with
Generalization.The present invention proposes a kind of general airborne equipment HIRF protection and can design, can use the theory of modularized design, anti-
Protect all kinds of airborne equipments.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of high high radiation field protection for aviation airborne equipment
Structure.
In order to realize the purpose, the technical solution of the utility model is as follows：It is a kind of to be used for the high-strength of aviation airborne equipment
Radiation field safeguard structure includes,
Metal shell is inside formed with shell accommodating space, has on the side wall of the metal shell and penetrate interface；
Electromagnetic susceptibility circuit, in the shell accommodating space；
Metal shell connector, be placed in it is described penetrate in interface, the first end of the metal shell connector is in
Outside the shell accommodating space, the second end of the metal shell connector is in the shell accommodating space, the metal
Cage adapter constitutes continuous Faradic electricity magnetic screen basket structure with the metal shell；
External cable, outside the shell accommodating space, the external cable is connected to the metal shell connection
The first end of device；
Enter port filter, in the shell accommodating space, it is described enter port filter first end be connected to it is described
The second end of metal shell connector, it is described enter port filter and the metal shell phase metallic bone；
Inside cable, in the shell accommodating space, the first end of the inside cable is connected to the entrance
The second end of the second end of filter, the inside cable is connected to the electromagnetic susceptibility circuit.
As a kind of preferred embodiment of the high high radiation field safeguard structure for aviation airborne equipment, it is described enter port filter
For low-pass filter.
As a kind of preferred embodiment of the high high radiation field safeguard structure for aviation airborne equipment, it is described enter port filter
Cutoff frequency be the electromagnetic susceptibility circuit 1/10th.
Compared with prior art, the beneficial effects of the utility model at least that：It effectively prevent HIRF in airborne equipment
The electronic circuit of portion's sensitivity generates interference.
The technical issues of being solved in addition to the utility model described above, constitute technical solution technical characteristic and by
Except advantageous effect caused by the technical characteristic of these technical solutions, other technologies problem that the utility model can solve,
The advantageous effect that the other technical characteristics for including in technical solution and these technical characteristics are brought will be made in conjunction with attached drawing into one
Step detailed description.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of the utility model.
Specific implementation mode
The utility model is described in further detail below by specific embodiment combination attached drawing.It needs herein
It is bright, the explanation of these embodiments is used to help to understand the utility model, but do not constitute the limit to the utility model
It is fixed.In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Conflict is constituted to can be combined with each other.
High high radiation field（High Intensity Radiated Field, HIRF）Electromagnetic environment is derived from radar, radio
Platform, broadcast and TV radiating station and other ground, ship or airborne radio frequency sending set, frequency range is from 10kHz to 40GHz, most
High electric field strength is up to several kilovolts/meter.
When airborne equipment is exposed under HIRF environment, electric current can be induced in circuit, thus to circuit element, especially
It is that those generate interference to electromagnetic interference than more sensitive digital circuits section, influences its normal work.
Fig. 1 is referred to, a kind of high high radiation field safeguard structure for aviation airborne equipment is shown in the figure.The height
High radiation field safeguard structure is mainly by metal shell 1, electromagnetic susceptibility circuit 2, metal shell connector 4, external cable 3, entrance
The components such as filter 5 and inside cable 6 form.
Shell accommodating space is formed in the metal shell 1.Have on the side wall of the metal shell 1 and penetrates interface.
The electromagnetic susceptibility circuit 2 is in the shell accommodating space.
The metal shell connector 4 is placed in described penetrate in interface.At the first end of the metal shell connector 4
In outside the shell accommodating space.The second end of the metal shell connector 4 is in the shell accommodating space.The gold
Belong to cage adapter 4 and constitutes continuous Faradic electricity magnetic screen basket structure with the metal shell 1.
The external cable 3 is in outside the shell accommodating space.The external cable 3 is connected to the metal shell and connects
Connect the first end of device 4.
It is described enter port filter 5 be in the shell accommodating space.It is described enter port filter 5 first end be connected to institute
State the second end of metal shell connector 4.It is described enter port filter 5 and 1 phase metallic bone of the metal shell.
The inside cable 6 is in the shell accommodating space.The first end of the inside cable 6 enters described in being connected to
The second end of port filter 5.The second end of the inside cable 6 is connected to the electromagnetic susceptibility circuit 2.
Operation principle：Two aspects of shielding and filtering are mainly reflected in the protection of HIRF, wherein shielding can prevent from coming
From the HIRF of space radiation, and filtering can prevent from entering the HIRF inside LRU with conduction pattern via device external cable 3.
Shielding：When there is radiation field in the outside of the metal shell 1, electric current can be induced on the metal shell 1, this
Induced current can also form a field strength, cancel out each other with original radiation field, to make the spoke in the shell accommodating space
Field strength is penetrated close to zero（The concept of Faradic electricity magnetic screen cage）, it is effectively protected electromagnetic susceptibility circuit 2.
Filtering：It is described enter port filter 5 be a low-pass filter, to consider the work of internal digital circuit in design
Frequency, can by it is described enter port filter 5 cutoff frequency be set as 1/10th of digital circuit working frequency, to filter out height
Keep pouring in the influence for leading HIRF.
The course of work：The electric signal that the external cable 3 provides enters via the metal shell connector 4 in product
Behind portion, be first connected to it is described enter port filter 5, it is described enter port filter 5 accomplished low-impedance overlap joint with the metal shell 1,
A low impedance path for reaching the metal shell 1 is provided for conduction HIRF noises, avoids conduction HIRF noises via interior
Portion's cable 6 enters the digital circuit of electromagnetic interference sensitivity.
Only express the embodiment of the utility model above, the description thereof is more specific and detailed, but and cannot therefore and
It is interpreted as the limitation to utility model patent range.It should be pointed out that for those of ordinary skill in the art, not
Under the premise of being detached from the utility model design, various modifications and improvements can be made, these belong to the guarantor of the utility model
Protect range.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (3)
1. a kind of high high radiation field safeguard structure for aviation airborne equipment, which is characterized in that include,
Metal shell is inside formed with shell accommodating space, has on the side wall of the metal shell and penetrate interface；
Electromagnetic susceptibility circuit, in the shell accommodating space；
Metal shell connector, be placed in it is described penetrate in interface, the first end of the metal shell connector is in described
Outside shell accommodating space, the second end of the metal shell connector is in the shell accommodating space, the metal shell
Connector constitutes continuous Faradic electricity magnetic screen basket structure with the metal shell；
External cable, outside the shell accommodating space, the external cable is connected to the metal shell connector
First end；
Enter port filter, in the shell accommodating space, it is described enter port filter first end be connected to the metal
The second end of cage adapter, it is described enter port filter and the metal shell phase metallic bone；
Inside cable, in the shell accommodating space, the first end of the inside cable is connected to the entrance filtering
The second end of the second end of device, the inside cable is connected to the electromagnetic susceptibility circuit.
2. a kind of high high radiation field safeguard structure for aviation airborne equipment according to claim 1, which is characterized in that
It is described enter port filter be low-pass filter.
3. a kind of high high radiation field safeguard structure for aviation airborne equipment according to claim 1, which is characterized in that
It is described enter port filter cutoff frequency be the electromagnetic susceptibility circuit 1/10th.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721709489.5U CN207744337U (en) | 2017-12-11 | 2017-12-11 | A kind of high high radiation field safeguard structure for aviation airborne equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721709489.5U CN207744337U (en) | 2017-12-11 | 2017-12-11 | A kind of high high radiation field safeguard structure for aviation airborne equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207744337U true CN207744337U (en) | 2018-08-17 |
Family
ID=63117453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721709489.5U Expired - Fee Related CN207744337U (en) | 2017-12-11 | 2017-12-11 | A kind of high high radiation field safeguard structure for aviation airborne equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207744337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687168A (en) * | 2021-08-30 | 2021-11-23 | 北京航空航天大学 | System electromagnetic compatibility index decomposition method for 10kHz-18GHz electric field radiation emission |
-
2017
- 2017-12-11 CN CN201721709489.5U patent/CN207744337U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687168A (en) * | 2021-08-30 | 2021-11-23 | 北京航空航天大学 | System electromagnetic compatibility index decomposition method for 10kHz-18GHz electric field radiation emission |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20180817 |