CN103363402A - Lighting device for anechoic chamber - Google Patents
Lighting device for anechoic chamber Download PDFInfo
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- CN103363402A CN103363402A CN2013103026920A CN201310302692A CN103363402A CN 103363402 A CN103363402 A CN 103363402A CN 2013103026920 A CN2013103026920 A CN 2013103026920A CN 201310302692 A CN201310302692 A CN 201310302692A CN 103363402 A CN103363402 A CN 103363402A
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- anechoic chamber
- light source
- led light
- power supply
- lighting device
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Abstract
The invention discloses a lighting device for an anechoic chamber. A direct-current drive power supply arranged outside the anechoic chamber supplies electricity to an LED (Light Emitting Diode) light source, and a direct current filter and an EMC (Electro Magnetic Compatibility) inhibition unit are reasonably arranged on a power supply circuit, so that not only the self electromagnetic interference of the lighting device is avoided effectively, but also the electromagnetic interference in the power supply circuit is blocked effectively; in addition, through the reasonable arrangement of the LED light source in the anechoic chamber, the condition that a plurality of large-size holes are formed in the anechoic chamber is avoided, the microwave absorbing property of the anechoic chamber is improved considerably, the electromagnetic interference problem of the lighting device and a power supplying device is solved effectively, and favorable effects of less interference introduced from the exterior of the anechoic chamber, good microwave absorbing property, low cost, long service life of the lighting device and the like can be achieved.
Description
[technical field]
The invention belongs to electromagnetic compatibility (EMC) field tests, be specifically related to a kind of lighting device.
[background technology]
Anechoic chamber, is the important test site of measuring tested radiation of equipment interference and radiation immunity, is mainly used in reducing external electromagnetic ripple signal to the interference of test signal, therefore, the caused electromagnetic interference such as its lighting device and electric supply installation is had relatively high expectations.At present, most anechoic chamber,s adopt HID lamps (such as Metal halogen lamp etc.) as lighting, but owing to need to adopt Alternating Current Power Supply, introduce larger electromagnetic interference; Although existing anechoic chamber, also is provided with alternating current filter, the minority electromagnetic interference of alternating current filter in only can the filtering electrical network, most electromagnetic interference still remain in the anechoic chamber; And the Metal halogen lamp built-in ballasts is lighted the Instantaneous high-pressure pulse that moment produces at lamp will produce stronger electromagnetic interference, and this part electromagnetic interference causes great impact far above the electromagnetic interference in the electrical network to test result.
Secondly, the HID lamp life-span is shorter, changes comparatively frequent.Consider heat dissipation problem, the HID lamp can only be installed in the top, darkroom, and the height in general 3m method darkroom just has 6m, and the height in 10m method darkroom has 9m, so lowering or hoisting gear must be installed to install, to dismantle and maintenance HID lamp.The power inverter of lowering or hoisting gear and electric-motor drive unit all can be introduced considerable electromagnetic interference, moreover, the volume of HID lamp and lowering or hoisting gear is relatively large, anechoic chamber, need to be offered a plurality of larger-size holes usually as lamp box on the top, place HID lamp and lowering or hoisting gear, perforate causes absorbing material can't lay in light box part, affects the anechoic chamber, performance, as shown in Figure 1.In addition, the HID lamp also exists and starts the problems such as time-delay is long, heating is large, and the ventilation and heat of anechoic chamber, has been proposed more harsh requirement.
Although also occurred minority at present in the hope of reducing the technical scheme of electromagnetic interference, raising anechoic chamber, performance, be " a kind of illuminator of the anechoic chamber, " patent of " CN201636771U " such as publication number, but this technical scheme is except electric supply installation, lighting device only, just need a plurality of devices such as configuration light source, photophore, optical fiber, connector, diffuser, complex structure and cost are expensive, and domestic consumer often is difficult to bear.
[summary of the invention]
For above-mentioned the deficiencies in the prior art, the present invention aims to provide a kind of anechoic chamber, lighting device that adopts the led light source of direct current supply, has that the electromagnetic interference degree is low, heat radiation is few, simple in structure, characteristics such as the life-span is long and cost is low.
A kind of lighting device for anechoic chamber, of the present invention is achieved through the following technical solutions.A kind of lighting device for anechoic chamber,, it is characterized in that comprise led light source and the direct drive power supply of powering to led light source, described led light source is arranged on anechoic chamber, inside, the direct drive power supply is arranged on the anechoic chamber, outside, and the direct drive power supply is electrically connected with led light source.
Among the present invention, the lighting device of anechoic chamber, adopts the LED of direct current supply as lighting source, and the direct drive power supply of led light source is arranged on the anechoic chamber, outside, avoided the electromagnetic interference that power supply waits equipment to bring to anechoic chamber, in the lighting device, and can not introduce the electromagnetic interference such as instantaneous pressure pulse that similar HID lamp built-in ballasts is brought, significantly improve the performance of anechoic chamber.In addition, with respect to the HID lamp, the led light source life-span is long, efficiency is high, the light quality is good, heat radiation is few, environmental protection and energy saving, need not the frequent light fixture in the use procedure of darkroom, also relatively low for the designing requirement of anechoic chamber, ventilation and heat, be the anechoic chamber, lighting device of desirable built-in light-source, effectively reduced construction difficulty and the cost of anechoic chamber.
The present invention can also further improve and optimize by the following technical programs:
As preferably, comprise the DC filter that is arranged on the anechoic chamber, outside, described direct drive power supply is electrically connected with DC filter, and DC filter is electrically connected with led light source.But the electromagnetic interference of DC filter filtering direct drive power supply dc output end, and DC filter is arranged on the anechoic chamber, outside, can avoid himself to the electromagnetic interference that anechoic chamber, produces, and further improves the performance of anechoic chamber.
As preferably, comprise that EMC suppresses the unit, described DC filter suppresses the unit with EMC and is electrically connected, and EMC suppresses the unit and is electrically connected with led light source.EMC suppresses the unit in order to residual electromagnetic interference in the further inhibition supply line; It can adopt the ferrite bead group, and the inwall of next-door neighbour's anechoic chamber, shield is enclosed within on the output line of wave filter.
As a kind of technical scheme, comprise plural led light source, the distributed setting of described led light source or directed the setting.The quantity of light source and set-up mode can be according to concrete needs flexible choices, for example, for the larger anechoic chamber, of some volume, a led light source may be not enough to satisfy the illumination needs, and can distribute in anechoic chamber, arranges a plurality of led light sources to satisfy the lighting requirement of test; Perhaps when test, only need to shine tested equipment, the orientable light source that the tested equipment of irradiation is set.It is pointed out that between two above led light sources in the technical program and can connect/parallel connection, and can be distributed in according to the illumination needs top, sidewall even the bottom of anechoic chamber.
As a kind of technical scheme, described led light source is one or more packaged LED/LED module or for the LED light fixture or for LED lamp band.The abundant species of led light source, structural design is flexible, and the lighting device of anechoic chamber, can be selected according to its unitary construction the led light source of corresponding kind.For example can select LED lamp band, LED lamp band can be embedded in the gap of anechoic chamber, absorbing material, and the perforate that led light source is installed need to be set on anechoic chamber, in addition, therefore, absorbing material can be laid complete, further improves the performance of anechoic chamber,, makes measurement result more accurate.
As preferably, described led light source is arranged on the sidewall of anechoic chamber.As described in the background section, the volume of HID lamp is large (Metal halogen lamp of 70W is long 15cm generally) generally, and because heat radiation needs, must be installed in the top of anechoic chamber,, therefore lowering or hoisting gear need to be set, yet not only lowering or hoisting gear self is introduced larger electromagnetic interference, and causes anechoic chamber, open top size larger, affects the performance of anechoic chamber.Than the HID lamp, the volume of led light source little (the common LED diameter is only about 10mm), quality are light, such as LED lamp band etc., can be set directly in the gap of anechoic chamber, absorbing material; Perhaps offer groove at the anechoic chamber, sidewall, led light source is embedded in the groove, EMC suppresses the sidewall that the unit also can be arranged near led light source anechoic chamber.So just need not to arrange lowering or hoisting gear, the anechoic chamber, top also need not to offer large-sized hole, not only can reduce the electromagnetic interference that lowering or hoisting gear brings, and can increase the laying integrality of absorbing material in anechoic chamber,, fully ensure the superperformance of anechoic chamber.
As a kind of technical scheme, described led light source is the light source that luminosity is adjustable and/or color is adjustable.For example, for some the photosensitive tested equipment with certain spectral selection, its spectrum sensitivity to different-waveband is different, thereby can regulate the spectrum of led light source according to concrete needs, satisfies the test needs of all kinds of tested equipment.
As a kind of technical scheme, described direct drive power supply is single channel or the multichannel DC source of regulating, and the direct drive power supply is electrically connected with led light source; Perhaps comprise the light modulating device that is arranged on direct drive power supply outside, described direct drive power supply is electrically connected with light modulating device, and light modulating device is electrically connected with led light source.The direct drive power supply is single channel or the multichannel DC source of regulating.If led light source is single led whole lamp or light fixture, then can utilize single channel direct drive Power supply, regulate its luminosity by regulating power supply output; If yet led light source is the array that a plurality of LED form, utilize the power supply of multi-channel DC driving power, by regulating the power supply output of each passage, realize the luminosity of led light source and/or the adjusting of color.In addition, light modulating device can be absolute construction, is connected between direct drive power supply and the led light source; It is inner also can be built in the direct drive power supply, with the design of direct drive power supply integration, as required flexible choice.
As a kind of technical scheme, the supply lines between described led light source and the direct drive power supply is side by side parallel wire or multiple twin type wire.The electromagnetic interference that supply lines produces can be effectively offset in the parallel or multiple twin setting of supply lines, improves the darkroom performance.
As preferably, comprise lamp box, described lamp box protrudes from the surface of anechoic chamber,, and the opening of lamp box contacts with the surface of anechoic chamber,, and described led light source is arranged in the lamp box.Than HID lamps such as Metal halogen lamps, the volume of led light source is little, and corresponding lamp box size is also less, thereby the opening that need to arrange on the anechoic chamber, surface is also less, and is also less to the performance impact of anechoic chamber.In addition, also can be provided for installing, safeguarding the lowering or hoisting gear of light source in lamp box, because the small volume of led light source, the size of required lowering or hoisting gear is also less, and the electromagnetic interference of its introducing is also less; In addition, at the outer setting alternating current filter of anechoic chamber,, its inside arranges EMC and suppresses the unit, and alternating current filter suppresses the unit with EMC and is electrically connected, and EMC suppresses the unit and is electrically connected with lowering or hoisting gear, and lowering or hoisting gear is fixedly connected with led light source.Alternating current filter and EMC suppress the unit and are respectively applied to the electromagnetic interference that suppresses residual in electrical network ac output end and the supply line, to improve the performance of anechoic chamber.During test, lowering or hoisting gear does not use, and the alternating current of electrical network is through the electromagnetic interference of alternating current filter filtering electrical network ac output end, and EMC suppresses the unit in order to suppress electromagnetic interference residual in the supply line, reduce lowering or hoisting gear and the caused electromagnetic interference of powering thereof, make measuring-signal more accurate.
As preferably, the shell of described led light source adopts high dielectric material to make.Led light source can be the LED light fixture, and its shell is lampshade, and this lampshade can adopt the higher material of dielectric constant (dielectric constant＞6), to reduce the reflection of electromagnetic wave on lampshade.
In sum, the present invention powers to led light source by the direct drive power supply that employing is placed on anechoic chamber,, and DC filter and EMC rationally are set in supply line suppress the unit, not only effectively avoid the electromagnetic interference of self, and effectively stopped the electromagnetic interference in the supply line; In addition, by the reasonable setting of led light source in anechoic chamber,, avoided offering a plurality of large scale perforates at anechoic chamber,, significantly improved the absorbing property of anechoic chamber,, efficiently solve the electromagnetic interference problem of lighting device and electric supply installation, can realize that outside introducing of anechoic chamber, disturb the good results such as little, that absorbing property good, cost is low and the lighting device life-span is long.
[description of drawings]
Accompanying drawing 1 is the structure chart of existing anechoic chamber;
Accompanying drawing 2 is electrical connection figure of embodiment 1;
Accompanying drawing 4 is anechoic chamber, inwall partial enlarged drawings of embodiment 1.
The 1-LED light source; 2-direct drive power supply; The 3-anechoic chamber; The 4-DC filter; 5-EMC suppresses the unit; The 6-lamp box.
[specific embodiment]
Shown in Fig. 2 and 3, present embodiment discloses a kind of lighting device for anechoic chamber,, comprise that led light source 1, direct drive power supply 2, DC filter 4, EMC suppress unit 5, led light source 1 and EMC suppress unit 5 and are arranged on anechoic chamber, 3 inside, and direct drive power supply 2 and DC filter 4 are arranged on anechoic chamber, 3 outsides.The led light source 1 here is LED lamp band.
Direct drive power supply 2 is electrically connected with DC filter 4, and DC filter 4 suppresses unit 5 with EMC and is electrically connected, and EMC suppresses unit 5 and is electrically connected with led light source 1; Anechoic chamber, 3 comprises three layers, is followed successively by from outside to inside screen layer, ferrite, wedge, and LED lamp band is embedded in the gap of wedge, as shown in Figure 4.
During real work, be arranged on outer direct drive power supply 2 output DCs of anechoic chamber, 3, suppress the residual electromagnetic interference of unit 5 filtering direct currents by DC filter 4 and EMC first after, be input in the led light source 1, farthest to avoid electromagnetic interference problem.Because led light source 1 adopts direct current supply, can not introduce the electromagnetic interference that instantaneous pressure pulse that similar HID lamp built-in ballasts brings etc. causes; Direct drive power supply 2 and DC filter 4 are arranged on outside the anechoic chamber, 3 simultaneously, can not produce extra electromagnetic interference, accuracy of measurement height and cost are low, in addition, LED lamp band has also that volume is little, the life-span is long, the light quality is high, heat radiation is few, health environment-friendly, need not the frequent light fixture, to characteristics such as anechoic chamber, 3 ventilation and heat designing requirements are relatively low.
Claims (9)
1. lighting device that is used for anechoic chamber,, it is characterized in that, comprise led light source (1) and the direct drive power supply (2) of powering to led light source (1), described led light source (1) is arranged on anechoic chamber, (3) inside, direct drive power supply (2) is arranged on anechoic chamber, (3) outside, and direct drive power supply (2) is electrically connected with led light source (1).
2. a kind of lighting device for anechoic chamber, as claimed in claim 1, it is characterized in that, comprise and be arranged on the outside DC filter (4) of anechoic chamber, (3), described direct drive power supply (2) is electrically connected with DC filter (4), and DC filter (4) is electrically connected with led light source (1).
3. a kind of lighting device for anechoic chamber, as claimed in claim 2, it is characterized in that, comprise that EMC suppresses unit (5), described DC filter (4) suppresses unit (5) with EMC and is electrically connected, and EMC suppresses unit (5) and is electrically connected with led light source (1).
4. a kind of lighting device for anechoic chamber, as claimed in claim 1 is characterized in that, comprises plural led light source (1), the distributed setting of described led light source (1) or directed the setting.
5. a kind of lighting device for anechoic chamber, as claimed in claim 1 is characterized in that, described led light source (1) is one or more packaged LED/LED module or for the LED light fixture or for LED lamp band.
6. such as claim 1 or 4 or 5 described a kind of lighting devices for anechoic chamber,, it is characterized in that described led light source (1) is arranged on the sidewall of anechoic chamber, (3).
7. such as claim 1 or 4 or 5 described a kind of lighting devices for anechoic chamber,, it is characterized in that described led light source (1) is luminosity and/or the adjustable light source of color.
8. a kind of lighting device for anechoic chamber, as claimed in claim 7, it is characterized in that, described direct drive power supply (2) is single channel or the multichannel DC source of regulating, and direct drive power supply (2) is electrically connected with led light source (1); Perhaps comprise being arranged on the outside light modulating device of direct drive power supply (2), described direct drive power supply (2) is electrically connected with light modulating device, and light modulating device is electrically connected with led light source (1).
9. a kind of lighting device for anechoic chamber, as claimed in claim 1 is characterized in that, the supply lines between described led light source (1) and the direct drive power supply (2) is for parallel wire side by side or be the multiple twin type wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302692.0A CN103363402B (en) | 2013-07-16 | 2013-07-16 | Lighting device for anechoic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310302692.0A CN103363402B (en) | 2013-07-16 | 2013-07-16 | Lighting device for anechoic chamber |
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| Publication Number | Publication Date |
|---|---|
| CN103363402A true CN103363402A (en) | 2013-10-23 |
| CN103363402B CN103363402B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310302692.0A Active CN103363402B (en) | 2013-07-16 | 2013-07-16 | Lighting device for anechoic chamber |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247231A (en) * | 2016-10-26 | 2016-12-21 | 广州市诚臻电子科技有限公司 | A kind of illuminator for anechoic chamber, |
| CN111988890A (en) * | 2020-10-26 | 2020-11-24 | 南京容测检测技术有限公司 | Light emitting diode lighting equipment power supply for electromagnetic compatibility test |
| CN113589193A (en) * | 2021-07-05 | 2021-11-02 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility test system and test method for front and rear combination lamps of automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201636771U (en) * | 2009-11-26 | 2010-11-17 | 英业达股份有限公司 | Illumination system for anechoic chamber |
| CN102227644A (en) * | 2008-11-27 | 2011-10-26 | 住友大阪水泥股份有限公司 | Electric field measuring device |
| CN203336380U (en) * | 2013-07-16 | 2013-12-11 | 杭州远方仪器有限公司 | Illumination device for anechoic chamber |
-
2013
- 2013-07-16 CN CN201310302692.0A patent/CN103363402B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227644A (en) * | 2008-11-27 | 2011-10-26 | 住友大阪水泥股份有限公司 | Electric field measuring device |
| CN201636771U (en) * | 2009-11-26 | 2010-11-17 | 英业达股份有限公司 | Illumination system for anechoic chamber |
| CN203336380U (en) * | 2013-07-16 | 2013-12-11 | 杭州远方仪器有限公司 | Illumination device for anechoic chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247231A (en) * | 2016-10-26 | 2016-12-21 | 广州市诚臻电子科技有限公司 | A kind of illuminator for anechoic chamber, |
| CN111988890A (en) * | 2020-10-26 | 2020-11-24 | 南京容测检测技术有限公司 | Light emitting diode lighting equipment power supply for electromagnetic compatibility test |
| CN113589193A (en) * | 2021-07-05 | 2021-11-02 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility test system and test method for front and rear combination lamps of automobile |
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| Publication number | Publication date |
|---|---|
| CN103363402B (en) | 2015-04-22 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180328 Address after: 310053 room 2006B, 2 Building 2, Hangzhou, Binjiang District, Binjiang District, Zhejiang Patentee after: Hangzhou far side Electromagnetic Compatibility Technology Co., Ltd. Address before: 310053 Binjiang District, Zhejiang Province, Hangzhou Road, No. 669 Patentee before: Hangzhou Everfine Instrument Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131023 Assignee: EVERFINE PHOTO-E-INFORMATION Co.,Ltd. Assignor: Hangzhou far side Electromagnetic Compatibility Technology Co.,Ltd. Contract record no.: X2021330000756 Denomination of invention: A lighting device for anechoic chamber Granted publication date: 20150422 License type: Common License Record date: 20211117 |
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| EE01 | Entry into force of recordation of patent licensing contract |