CN207020259U - A kind of projection arrangement for electromagnetic compatibility test - Google Patents
A kind of projection arrangement for electromagnetic compatibility test Download PDFInfo
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- CN207020259U CN207020259U CN201720755694.9U CN201720755694U CN207020259U CN 207020259 U CN207020259 U CN 207020259U CN 201720755694 U CN201720755694 U CN 201720755694U CN 207020259 U CN207020259 U CN 207020259U
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- Prior art keywords
- projecting apparatus
- screening arrangement
- arrangement
- temperature controller
- electromagnetic compatibility
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Abstract
The utility model provides a kind of projection arrangement for electromagnetic compatibility test, including screening arrangement, projecting apparatus, printing opacity shielding panel, gauze screen, radiator fan, temperature controller, terminal plate；Wherein, the projecting apparatus is arranged in the screening arrangement, the side panel of the screening arrangement is affixed with printing opacity shielding panel, the screening arrangement is affixed with gauze screen close to the air outlet of the projecting apparatus and the both sides shielding panel of air inlet, the terminal plate is connected with power supply, a kind of projection arrangement for electromagnetic compatibility provided by the utility model can be placed in anechoic chamber, and use, easy for installation, electromagnetic interference degree is low, anti-electromagnetic interference capability is strong, heat radiation is few, simple in construction, service life length.
Description
Technical field
Electromagnetic compatibility test field is the utility model is related to, more particularly to a kind of projection for electromagnetic compatibility test fills
Put.
Background technology
Electro Magnetic Compatibility (EMC) refers to that equipment or system meet the requirements operation not in its environment in its electromagnetic environment
Any equipment produce the ability of intolerable electromagnetic interference.Therefore, EMC includes the requirement of two aspects：On the one hand refer to
Equipment is in normal course of operation to electromagnetic interference caused by the environment of place no more than certain limit value；On the other hand it is finger device
Tool has a certain degree of immunity to interference, i.e. electromagnetic susceptibility to electromagnetic interference present in the environment of place.
Anechoic chamber, is the important test site for measuring Device under test radiation interference and radiation immunity, is mainly used in reducing
Interference of the external electromagnetic ripple signal to test signal, the method for existing anechoic chamber, test electric equipment products radiation intensity
It is the precalculated position that the electric equipment products for needing to test first is placed in anechoic chamber, by tester, and adjusts test and set
Standby position and after setting test equipment parameter preset, tester leaves darkroom, and the control by being arranged on outside darkroom
Whether the data of equipment observation test equipment feedback normal, such as data exception, then may test equipment position or parameter setting
Incorrect, tester is again introduced into darkroom and is adjusted, and is repeated several times, until the data of test equipment feedback are normal, so
Darkroom debugging is passed in and out back and forth, is inconvenient.
A kind of projection arrangement being placed in anechoic chamber, thus is needed, available for the analyzing test data in darkroom, is exempted from
The problem of going to pass in and out darkroom adjusting device.And existing projecting apparatus is as large screen display instrument, by by electric energy or other set
Standby vision signal is projected on screen, will produce electromagnetic radiation in the course of the work, and Electro Magnetic Compatibility is poor, thus projecting apparatus without
Method works and projected in anechoic chamber,.It is therefore desirable to provide, a kind of electromagnetic interference is low, heat radiation is few and can be in anechoic chamber,
The projection arrangement of interior work, it can work and project in anechoic chamber,.
Utility model content
The purpose of this utility model is to overcome prior art insufficient, there is provided a kind of projection for electromagnetic compatibility test fills
Put, have the characteristics that electromagnetic interference is low, heat radiation is few, simple in construction, long lifespan and cost are low.
The utility model uses following technical scheme to achieve the above object：
A kind of projection arrangement for electromagnetic compatibility test, including screening arrangement and the projection that is arranged in screening arrangement
Instrument, printing opacity shielding panel；
The screening arrangement is the box body of a closing, including four side panels, a bottom plate and a top plate；
The projecting apparatus is fixed on the bottom plate of the screening arrangement；
The screening arrangement offers projection window, the projection window on the side panel of the camera lens direction of projecting apparatus
Light transmission screen lee-side plate is affixed with mouthful.
In the embodiment of the utility model one, the projection arrangement for electromagnetic compatibility test also includes：It is arranged on screen
Cover radiator fan, the temperature controller in device；
The screening arrangement also include gauze screen on the first ventilating opening of the first ventilating opening and paving, the second ventilating opening,
And gauze screen of the paving on second ventilating opening；
The screening arrangement offers first ventilating opening on the side panel of the projecting apparatus air inlet, described
Screening arrangement is close to the projecting apparatus air outlet towards offering second ventilating opening on the panel of side；
Radiator fan is provided with before first ventilating opening；
Temperature controller is provided with before the air outlet of the projecting apparatus；
The temperature controller is used for the temperature for detecting the projecting apparatus air outlet, when temperature controller institute detection temperature exceedes in advance
If during value, the temperature controller is additionally operable to control the radiator fan to open.
The side panel of the screening arrangement is provided with terminal plate, the terminal plate be located at terminals outside screening arrangement with
Power supply is connected, and the terminals that the terminal plate is located in screening arrangement are connected with the projecting apparatus, and the terminal plate is positioned at shielding
Terminals in device are also connected with the double-reed temperature controller.
The temperature controller includes double-reed temperature controller, specifically includes movable contact spring, static contact, movable contact, stationary contact, insulation
Post, the first terminals, the second terminals；
First terminals of the double-reed temperature controller are connected with the radiator fan, and the second terminals are located at terminal plate
Terminals in screening arrangement are connected.
The movable contact spring and the static contact are the different sheet metal of two kinds of coefficient of thermal expansions, the coefficient of thermal expansion of the movable contact spring
Much larger than the coefficient of thermal expansion of the static contact.
Further, in the utility model second embodiment, one kind provided by the utility model is used for electromagnetic compatibility
The projection arrangement of test also includes the first optical-electric module, the second optical-electric module and main control module；
Wherein, the control terminal of the projecting apparatus is connected with one end of second optical-electric module, second optical-electric module
The other end be connected with one end of first optical-electric module, the other end of first optical-electric module and the main control module phase
Even；The main control module is used to produce control instruction, to control the presentation content of projecting apparatus and/or brightness.
In the embodiment of the utility model one, the printing opacity shielding panel includes electro-conductive glass, wire glass.
In the embodiment of the utility model one, the gauze screen includes the gauze screen that mesh number is not more than 120 mesh.
Compared with prior art, the beneficial effects of the utility model are：
First, a kind of projection arrangement in anechoic chamber, provided by the utility model, passes through rational module cloth
Office and various shielding measures, ensure that projecting apparatus will not cause extra electromagnetic interference to anechoic chamber, and can bear in darkroom
The electromagnetic radiation environment of high intensity；
Second, the projection arrangement provided by the utility model in anechoic chamber, can also pass through double-reed temperature control
Device and radiator fan automatically control and adjusted temperature when projecting apparatus works in anechoic chamber, according to temperature change, it is ensured that in device
Equalized temperature, ensure the operation of each circuit module.
Brief description of the drawings
Fig. 1 is a kind of structural representation of projection arrangement for electromagnetic compatibility test of the utility model first embodiment
Figure；
Fig. 2 be the utility model first embodiment a kind of projection arrangement for electromagnetic compatibility test radiator fan with
The structural representation of double-reed temperature controller.
Wherein：(1) screening arrangement, (2) projecting apparatus, (3) printing opacity shielding panel, (4) first ventilating openings, (5) radiator fan,
(6) temperature controller, (7) terminal plate, (8) second ventilating openings
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further to the utility model, illustrative examples therein
And explanation is only used for explaining the utility model, but it is not intended as to restriction of the present utility model
It should be noted that in the utility model, term " first ", " second " are only used for describing purpose, and can not manage
Solve to indicate or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
One or more this feature can be expressed or be implicitly included to the feature of " second ".In description of the present utility model,
" multiple " are meant that two or more, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and obliquely downward, or only
Represent that fisrt feature level height is less than second feature.
In the embodiment of the utility model one, as shown in figure 1, a kind of electromagnetic compatibility that is used for provided by the utility model is surveyed
The projection arrangement of examination includes screening arrangement 1 and the projecting apparatus 2, printing opacity shielding panel 3, the radiator fan that are arranged in screening arrangement 1
5th, temperature controller 6, terminal plate 7；
Screening arrangement 1 is the box body of a closing, including four side panels, a bottom plate and a top plate；
Projecting apparatus 2 is fixed on the bottom plate of screening arrangement 1；
Screening arrangement 1 offers projection window, projection window upper berth patch on the side panel of the camera lens of projecting apparatus 2
There is printing opacity shielding panel 3；
Screening arrangement 1 also includes gauze screen on first ventilating opening 4 of the first ventilating opening 4 and paving, the second ventilation
The gauze screen of mouth 8 and paving on second ventilating opening 8；
Screening arrangement 1 offers the first ventilating opening 4 on the side panel of the air inlet of projecting apparatus 2；
Screening arrangement 1 offers the second ventilating opening 8 on the side panel of the air outlet of projecting apparatus 2；
Radiator fan 5 is provided with before first ventilating opening 4；
Temperature controller 6 is provided with before the air outlet of projecting apparatus 2, temperature controller 6 is used for the temperature for detecting the air outlet of projecting apparatus 2
Degree, when the temperature that temperature controller 6 is detected exceedes preset value, temperature controller 6 is additionally operable to control radiator fan 5 to open；
The side panel of screening arrangement 1 is provided with terminal plate 7, and terminal plate 7 is located at terminals and power supply phase outside screening arrangement 1
Even, the terminals that terminal plate 7 is located in screening arrangement 1 are connected with projecting apparatus 2, and terminal plate 7 is located at the terminals in screening arrangement 1
Also it is connected with temperature controller 6；
It is understood that the printing opacity shielding panel 3 includes electro-conductive glass, wire glass, or other art technologies
Light transmissive material that personnel commonly use, that equivalent effect can be achieved.
As shown in Fig. 2 in an embodiment of the present invention, temperature controller 6 is double-reed temperature controller, specifically include movable contact spring 61,
Static contact 62, movable contact 63, stationary contact 64, insulated column 65, the first terminals 66, the second terminals 67；
First terminals 66 of double-reed temperature controller 6 are connected with radiator fan 5, and the second terminals 67 are located at terminal plate 7
Terminals in screening arrangement 1 are connected；
Movable contact spring 61 and static contact 62 are the different sheet metal of two kinds of coefficient of thermal expansions, and the coefficient of thermal expansion of movable contact spring 61 is much larger than
The coefficient of thermal expansion of static contact 62.
Specifically, when the temperature of the air outlet of projecting apparatus 2 is increased to certain value, the expanded by heating of movable contact spring 61 is to lower swing
One larger amplitude, movable contact 63 is driven to be connected with stationary contact 64, radiator fan 5 and power circuit conducting, radiator fan 5
Open, start to radiate, after radiator fan 5 works a period of time, when the air outlet temperature of projecting apparatus 2 drops to certain value, move
Contact 61 recovers shape, and movable contact 63 disconnects with stationary contact 64, and circuit disconnects, and radiator fan 5 is stopped.
Specifically, to ensure to radiate, gauze screen 4 is the gauze screen that mesh number is not more than 120 mesh.
Further, in the utility model second embodiment, one kind provided by the utility model is used for electromagnetic compatibility
The projection arrangement of test also includes the first optical-electric module, the second optical-electric module and main control module；
Wherein, the control terminal of projecting apparatus 2 is connected with one end of second optical-electric module, second optical-electric module it is another
One end is connected by optical fiber with one end of first optical-electric module, the other end of first optical-electric module and the master control mould
Block is connected；The main control module is used to produce control instruction, to control the presentation content of projecting apparatus 2, brightness etc..
By taking the utility model second embodiment as an example, a sheet is provided with a concrete application scene, in anechoic chamber,
The projection arrangement that utility model is provided, wherein, screening arrangement 1 is the shielding case made of shielding material；First photoelectricity
Module and main control module 10 are arranged on outside anechoic chamber, and second optical-electric module is arranged in screening arrangement 1；
In projection, when needing to set presentation content and the brightness of projecting apparatus 2, projectionist passes through the main control module
Input projection instruction, the main control module are sent to first photoelectricity according to the projection instruction generation control electric signal
In module, the control electric signal is converted to control optical signal by first optical-electric module, and is sent to second photoelectricity
In module, the control optical signal received is again converted into controlling electric signal by second optical-electric module, and is sent to projection
In instrument 2, projecting apparatus 2 adjusts presentation content, brightness etc. according to the control electric signal received；
After projecting apparatus 2 works a period of time, because screening arrangement 1 is air-tight state, the leaving air temp liter of projecting apparatus 2
Height, the expanded by heating of movable contact spring 61 of double-reed temperature controller 6 drive movable contact 63 and stationary contact to one larger amplitude of lower swing
62 connection, turn on radiator fan 5 and terminal plate 7, radiator fan 5 is opened, and starts to radiate, when radiator fan 5 work one section when
Between after, when dropping to certain value at the temperature in screening arrangement 1, the leaving air temp of projecting apparatus 2 reduces, and movable contact spring 61 recovers shape,
Movable contact 63 disconnects with stationary contact 62, and circuit disconnects, and radiator fan 5 is stopped.
Obviously, above-described embodiment is used for the purpose of clearer expression technical solutions of the utility model example, and
The non-restriction to the utility model embodiment.To those skilled in the art, on the basis of the above description can be with
Make other changes in different forms, without departing from the concept of the premise utility, these belong to this practicality
New protection domain.Therefore the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
- A kind of 1. projection arrangement for electromagnetic compatibility test, it is characterised in that including：Screening arrangement and it is arranged on the screen Cover projecting apparatus, the printing opacity shielding panel in device；Wherein, the screening arrangement is the box body of a closing, including four side panels, a bottom plate and a top plate；The projecting apparatus is fixed on the bottom plate of the screening arrangement；The screening arrangement offers projection window, the projection window upper berth on the side panel of the projector lens Post printing opacity shielding panel.
- 2. a kind of projection arrangement for electromagnetic compatibility test as claimed in claim 1, it is characterised in that described to be used for electromagnetism The projection arrangement of compatibility test also includes：Radiator fan, the temperature controller being arranged in the screening arrangement；The screening arrangement also include gauze screen on first ventilating opening of the first ventilating opening and paving, the second ventilating opening, And gauze screen of the paving on second ventilating opening；The screening arrangement offers first ventilating opening on the side panel of the projecting apparatus air inlet；The screening arrangement offers second ventilating opening on the side panel of the projecting apparatus air outlet；The radiator fan is provided with before first ventilating opening；The temperature controller is provided with before the air outlet of the projecting apparatus；The temperature controller is used for the temperature for detecting the projecting apparatus air outlet, is preset when the temperature that the temperature controller is detected exceedes During value, the temperature controller is additionally operable to control the radiator fan to open.
- A kind of 3. projection arrangement for electromagnetic compatibility test as claimed in claim 2, it is characterised in that the screening arrangement Side panel be provided with terminal plate, the terminals that the terminal plate is located at outside screening arrangement are connected with power supply, the terminal plate position Be connected in the terminals in screening arrangement with the projecting apparatus, the terminal plate be located at terminals in screening arrangement also with it is described Temperature controller connects.
- A kind of 4. projection arrangement for electromagnetic compatibility test as claimed in claim 3, it is characterised in that the temperature controller bag Double-reed temperature controller is included, specifically includes movable contact spring, static contact, movable contact, stationary contact, insulated column, the first terminals, the second wiring End；First terminals of the double-reed temperature controller are connected with the radiator fan, and the second terminals are located at the terminal plate Terminals in screening arrangement are connected.
- A kind of 5. projection arrangement for electromagnetic compatibility test as claimed in claim 4, it is characterised in that the movable contact spring with The static contact is the different sheet metal of two kinds of coefficient of thermal expansions, and the coefficient of thermal expansion of the movable contact spring is much larger than the heat of the static contact Swollen coefficient.
- 6. a kind of projection arrangement for electromagnetic compatibility test as claimed in claim 2, it is characterised in that also including the first light Electric module, the second optical-electric module and main control module；The control terminal of the projecting apparatus is connected with one end of second optical-electric module, and the other end of second optical-electric module leads to One end that optical fiber is crossed with first optical-electric module is connected, the other end of first optical-electric module and the main control module phase Even；The main control module is used to produce control instruction, to control the presentation content of projecting apparatus and/or brightness.
- A kind of 7. projection arrangement for electromagnetic compatibility test as claimed in claim 2, it is characterised in that the printing opacity shielding Panel includes electro-conductive glass, wire glass.
- A kind of 8. projection arrangement for electromagnetic compatibility test as claimed in claim 2, it is characterised in that the gauze screen bag Include the gauze screen that mesh number is not more than 120 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720755694.9U CN207020259U (en) | 2017-06-27 | 2017-06-27 | A kind of projection arrangement for electromagnetic compatibility test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720755694.9U CN207020259U (en) | 2017-06-27 | 2017-06-27 | A kind of projection arrangement for electromagnetic compatibility test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207020259U true CN207020259U (en) | 2018-02-16 |
Family
ID=61486215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720755694.9U Active CN207020259U (en) | 2017-06-27 | 2017-06-27 | A kind of projection arrangement for electromagnetic compatibility test |
Country Status (1)
| Country | Link |
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| CN (1) | CN207020259U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490589A (en) * | 2018-12-29 | 2019-03-19 | 广州市诚臻电子科技有限公司 | A kind of novel shielding room |
| CN113219269A (en) * | 2021-03-30 | 2021-08-06 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility testing system and method for high-voltage PTC heating system of electric vehicle |
-
2017
- 2017-06-27 CN CN201720755694.9U patent/CN207020259U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490589A (en) * | 2018-12-29 | 2019-03-19 | 广州市诚臻电子科技有限公司 | A kind of novel shielding room |
| CN113219269A (en) * | 2021-03-30 | 2021-08-06 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility testing system and method for high-voltage PTC heating system of electric vehicle |
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