CN108289403A - A kind of high-precision laser range-finding equipment electromagnetic shielding cabin - Google Patents
A kind of high-precision laser range-finding equipment electromagnetic shielding cabin Download PDFInfo
- Publication number
- CN108289403A CN108289403A CN201810034950.4A CN201810034950A CN108289403A CN 108289403 A CN108289403 A CN 108289403A CN 201810034950 A CN201810034950 A CN 201810034950A CN 108289403 A CN108289403 A CN 108289403A
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- China
- Prior art keywords
- shell
- electromagnetic shielding
- laser range
- conductive
- precision laser
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0041—Ventilation panels having provisions for screening
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0058—Casings specially adapted for optoelectronic applications
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of high-precision laser range-finding equipment electromagnetic shielding cabins, the electromagnetic shielding cabin includes the shell that metallic plate is welded, the front side wall middle and upper part of the shell is provided with high light transmitting electro-conductive shielding case, and the high light transmitting electro-conductive shielding case is electrically connected with shell；The rear wall of shell is detachably connected with shell；The lower sidewall of shell is provided with power-supply filter and traffic filter, and side wall upper part and the lower part of shell are respectively provided with a ventilation waveguide window；The bottom of shell is provided with the fixing bolt for fixing distance-measuring equipment.The electromagnetic shielding cabin of the application has versatility, can be used as the optical measuring apparatus electromagnetic Compatibility Design for carrying out high-precision measurement with high shield effectiveness requirement or the reference of transformation.By combining metal shield and conductive light-permeable shielding material, the shield effectiveness, it can be achieved that more than 50dB is shielded to the electromagnetic interference of measuring apparatus in nacelle, to meet the requirement of the high sensitivity detections equipment such as radio astronomy.
Description
Technical field
The invention belongs to high-precision laser range-finding device mask technical fields, and in particular to a kind of high-precision laser range-finding is set
Spare electromagnetic shielding cabin.
Background technology
In radio astronomy field, it is often necessary to using high-precision Laser Distance Measuring Equipment to the reflecting surface shape of radio telescope
The position and reflecting surface of shape and feed carry out accurate and dynamic measurement due to the deformation conducted oneself with dignity with wind load.Simultaneously as high-precision
The Laser Distance Measuring Equipment of degree such as total powerstation is the synthesis being integrated by electro-optical distance measurement, electronics angle measurement, electronic compensation and MICROCOMPUTER PROCESSING
Property measuring instrument, will produce the electromagnetic radiation of wideband.Since radio astronomical telescope has the characteristics that high sensitivity, it is highly prone to
Electromagnetic interference needs to protect used Laser Distance Measuring Equipment, and main purpose is to prevent the electromagnetism of Laser Distance Measuring Equipment
Interference, impacts the detection performance and effect of radio telescope.
Invention content
For problems of the prior art, the purpose of the present invention is to provide a kind of high-precision laser range-finding equipment use
Electromagnetic shielding cabin, it is dry to the electromagnetism of measuring apparatus in nacelle by combining metal shield and conductive light-permeable shielding material
It disturbs and is shielded the shield effectiveness, it can be achieved that more than 50dB, to meet the requirement of the high sensitivity detections equipment such as radio astronomy.
To achieve the above object, the present invention uses following technical scheme：
A kind of high-precision laser range-finding equipment electromagnetic shielding cabin, the electromagnetic shielding cabin include what metallic plate was welded
The front side wall middle and upper part of shell, the shell is provided with high light transmitting electro-conductive shielding case, the high light transmitting electro-conductive shielding case and shell
Electrical connection；The rear wall of shell is detachably connected with shell；The lower sidewall of shell is provided with power-supply filter and signal filtering
Device, side wall upper part and the lower part of shell are respectively provided with a ventilation waveguide window；The bottom of shell is provided with for fixing distance-measuring equipment
Fixing bolt.
Further, the high light transmitting electro-conductive shielding case can be made of conductive polycarbonate material.
Further, the high light transmitting electro-conductive shielding case is in dome-shaped.
Further, it is carried out in such a way that screw adds conductive gasket between the high light transmitting electro-conductive shielding case and the shell
Connection.
Further, it is attached in such a way that screw adds conductive gasket between the rear wall and the shell.
Further, outwardly projecting metal cap is installed on the ventilation waveguide window, the top of the metal cap with it is described
It is attached in such a way that screw adds conductive gasket between shell, the lower part of metal cap is fixedly connected with the casing by screw.
The present invention has following advantageous effects：
The electromagnetic shielding cabin of the application has versatility, can be used as with high shield effectiveness requirement, carries out dynamic high precision
The optical measuring apparatus electromagnetic Compatibility Design of measurement or the reference of transformation.By combining metal shield and conductive light-permeable screen
Material is covered, the shield effectiveness, it can be achieved that more than 50dB is shielded to the electromagnetic interference of measuring apparatus in nacelle, is penetrated to meet
The requirement of the high sensitivity detections equipment such as electric astronomy.Since the structure can not only ensure the normal use of optical measuring apparatus,
It can realize good electromagnetic shielding and environmental protection again, so particularly suitable for working in the presence of a harsh environment, electromagnetic shielding is wanted
Ask higher situation, such as radio astronomy, national defence field.
Description of the drawings
Fig. 1 is the overall structure diagram of electromagnetic shielding cabin of the present invention；
Fig. 2 is the attachment structure schematic diagram of inventive shell and high light transmitting electro-conductive shielding case；
Fig. 3 is the attachment structure schematic diagram of rear wall of the present invention and shell；
Fig. 4 is the attachment structure schematic diagram of metal cap of the present invention and shell.
Specific implementation mode
In the following, refer to the attached drawing, makes a more thorough explanation the present invention, shown in the drawings of the exemplary implementation of the present invention
Example.However, the present invention can be presented as a variety of different forms, it is not construed as the exemplary implementation for being confined to describe here
Example.And these embodiments are to provide, it is of the invention full and complete to make, and will fully convey the scope of the invention to this
The those of ordinary skill in field.
As shown in Figure 1, the present invention provides a kind of high-precision laser range-finding equipment electromagnetic shielding cabin, the electromagnetic shielding cabin
Including the shell 1-1 that metallic plate is welded, the front side wall middle and upper part of shell 1-1 is provided with high light transmitting electro-conductive shielding case 1-2, gold
Belong to plank as main support structure, supports the measurement in cabin and auxiliary device；High light transmission shielding material and metal nacelle part
Connection, constitutes electrically continuous shield, because of the leakage or entrance without leading to electromagnetic interference, high light transmitting electro-conductive shielding case 1-2
It is electrically connected with shell 1-1；The rear wall 1-7 and shell 1-1 of shell 1-1 is detachably connected；The lower sidewall of shell 1-1 is provided with
The side wall upper part of power-supply filter 1-3 and traffic filter 1-4, shell 1-1 are respectively provided with a ventilation waveguide window 1-5 with lower part, pacify
Two ventilation waveguide windows up and down on shield take away the heat that system generates for carrying out heat exchange；Shell 1-
1 bottom is provided with the fixing bolt 1-8 for fixing distance-measuring equipment.Signal transmission is accessed by traffic filter, will not be led
It sends a telegraph magnetic disturbance and shield shell is leaked or entered from shield shell.Equipment power supply is accessed by power-supply filter, reduces edge
It power cord and travels to interference outside shield shell.
High light transmitting electro-conductive shielding case 1-2 uses are laminated, are readily bent, the high light transmission shielding material of environment resistant is made, and such as lead
Voltolisation carbonate material ensures that laser can pass through material, and provides required electromagnetic shielding.Exist according to Laser Distance Measuring Equipment
Motion range both horizontally and vertically is designed to the structure of dome, is connect with metal nacelle, when the rotation of measuring apparatus camera lens
When center is consistent with the dome centre of sphere, laser when measurement is basically perpendicular to dome, to reduce the influence to measurement accuracy.
High light transmitting electro-conductive shielding case 1-2 is in dome-shaped.
Connected in such a way that screw 2-1 adds conductive gasket 2-2 between high light transmitting electro-conductive shielding case 1-2 and shell 1-1
It connects, to ensure that connecting portion electrical contact is good, reaches shield effectiveness.
It is attached in such a way that screw 3-1 adds conductive gasket 3-2 between rear wall 1-7 and shell 1-1., rear wall
The setting of 1-7 facilitates the installation and maintaining of measuring apparatus；Using screw 3-1 connections and fixed mask cabin sheet metal cabin
Body, conductive gasket and screening cover ensure that electrically continuous.
Outwardly projecting metal cap 4-3 is installed on ventilation waveguide window 1-5, between the top and shell 1-1 of metal cap 4-3
It is attached in such a way that screw 4-1 adds conductive gasket 4-2, the lower part of metal cap 4-3 is solid by screw 4-4 and shell 1-1
Fixed connection.The setting of metal cap 4-3 reduces rainwater and penetrates into shielding cabin.Conductive gasket increases the compactness of connection, ensures electricity
Continuously.
It is described above simply to illustrate that of the invention, it is understood that the present invention is not limited to the above embodiments, meets
The various variants of inventive concept are within protection scope of the present invention.
Claims (6)
1. a kind of high-precision laser range-finding equipment electromagnetic shielding cabin, which is characterized in that the electromagnetic shielding cabin includes metallic plate
The front side wall middle and upper part of the shell being welded, the shell is provided with high light transmitting electro-conductive shielding case, the high light transmitting electro-conductive screen
Cover is covered to be electrically connected with shell；The rear wall of shell is detachably connected with shell；The lower sidewall of shell is provided with power-supply filter
And traffic filter, side wall upper part and the lower part of shell are respectively provided with a ventilation waveguide window；The bottom of shell is provided with for fixing
The fixing bolt of distance-measuring equipment.
2. high-precision laser range-finding equipment electromagnetic shielding cabin according to claim 1, which is characterized in that the high light transmission
Electrically conductive shield can be made of conductive polycarbonate material.
3. high-precision laser range-finding equipment electromagnetic shielding cabin according to claim 1, which is characterized in that the high light transmission
Electrically conductive shield is in dome-shaped.
4. high-precision laser range-finding equipment electromagnetic shielding cabin according to claim 1, which is characterized in that the high light transmission
It is attached in such a way that screw adds conductive gasket between electrically conductive shield and the shell.
5. high-precision laser range-finding equipment electromagnetic shielding cabin according to claim 1, which is characterized in that the rear wall
It is attached in such a way that screw adds conductive gasket between the shell.
6. high-precision laser range-finding equipment electromagnetic shielding cabin according to claim 1, which is characterized in that the ventilation wave
It leads and outwardly projecting metal cap is installed on window, conductive gasket is added using screw between the top of the metal cap and the shell
Mode be attached, the lower part of metal cap is fixedly connected with the casing by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034950.4A CN108289403A (en) | 2018-01-15 | 2018-01-15 | A kind of high-precision laser range-finding equipment electromagnetic shielding cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034950.4A CN108289403A (en) | 2018-01-15 | 2018-01-15 | A kind of high-precision laser range-finding equipment electromagnetic shielding cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108289403A true CN108289403A (en) | 2018-07-17 |
Family
ID=62835512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810034950.4A Pending CN108289403A (en) | 2018-01-15 | 2018-01-15 | A kind of high-precision laser range-finding equipment electromagnetic shielding cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108289403A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793509A (en) * | 2019-12-03 | 2020-02-14 | 安方高科电磁安全技术(北京)有限公司 | Total station shielding system |
| CN111442765A (en) * | 2020-01-07 | 2020-07-24 | 中国科学院国家天文台 | Total powerstation shielding device based on spherical waveguide window |
| CN112261862A (en) * | 2020-11-11 | 2021-01-22 | 中国科学院新疆天文台 | Shielding device for electromagnetic environment monitoring system |
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| CN106793735A (en) * | 2017-01-10 | 2017-05-31 | 中国科学院国家天文台 | A kind of double-deck electromagnetic armouring structure of the Complex Electronic Systems Based with motion platform |
| CN106793737A (en) * | 2017-03-15 | 2017-05-31 | 中国科学院武汉岩土力学研究所 | A kind of electromagnetic compatibility device housings under blasting environment |
| CN207692292U (en) * | 2018-01-15 | 2018-08-03 | 中国科学院国家天文台 | A kind of high-precision laser range-finding equipment electromagnetic shielding cabin |
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2018
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| CN201331931Y (en) * | 2008-12-30 | 2009-10-21 | 中国人民解放军总参谋部工程兵科研三所 | Double-cabin double-door structure shielding square cabin |
| CN202421978U (en) * | 2011-12-24 | 2012-09-05 | 天津光电通信技术有限公司 | Low-radiation leak-proof cabinet with opened-closed door structure |
| CN203145544U (en) * | 2013-03-15 | 2013-08-21 | 杨帆 | Sound insulation shielding room |
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| CN104179438A (en) * | 2014-07-28 | 2014-12-03 | 河南师范大学 | Electromagnetically-shielding sound-insulating protecting window applicable to electromagnetically-shielded room |
| CN104298325A (en) * | 2014-10-09 | 2015-01-21 | 安方高科电磁安全技术(北京)有限公司 | Low-leakage host case |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111442765A (en) * | 2020-01-07 | 2020-07-24 | 中国科学院国家天文台 | Total powerstation shielding device based on spherical waveguide window |
| CN112261862A (en) * | 2020-11-11 | 2021-01-22 | 中国科学院新疆天文台 | Shielding device for electromagnetic environment monitoring system |
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