CN104360209A - Electromagnetic compatibility monitoring system - Google Patents
Electromagnetic compatibility monitoring system Download PDFInfo
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- CN104360209A CN104360209A CN201410735752.2A CN201410735752A CN104360209A CN 104360209 A CN104360209 A CN 104360209A CN 201410735752 A CN201410735752 A CN 201410735752A CN 104360209 A CN104360209 A CN 104360209A
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- anechoic chamber
- absorption layer
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- turntable
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Abstract
The invention discloses an electromagnetic compatibility monitoring system which comprises an anechoic chamber, wherein a metal plate for shielding electromagnetic waves is wrapped outside the anechoic chamber, and is grounded; an absorption layer for absorbing the electromagnetic waves is attached to the inner surface of the anechoic chamber; a plurality of pyramidal sponges are distributed on the surface of the absorption layer and the heights of the pyramidal sponges are gradually increased from the corner of the absorption layer to the middle part of the absorption layer sequentially; the anechoic chamber is internally provided with a turntable for carrying a to-be-tested product, a permanent table which is rotationally connected with the turntable, and an antenna which is separated from the turntable by a certain distance and is used for receiving the electromagnetic waves emitted by the test product; an arc-shaped track which takes the antenna as a center is paved in the anechoic chamber, the permanent table is connected with the arc-shaped track in a sliding manner, and an amplifier and a receiver are arranged outside the anechoic chamber; the amplifier is connected with the antenna and the receiver respectively by virtue of a coaxial cable. The system disclosed by the invention can be used for testing the product in a moving state and acquiring an accurate test result.
Description
Technical field
The present invention relates to electromagnetic compatibility test field, particularly relate to a kind of Electro Magnetic Compatibility supervisory system.
Background technology
Electro Magnetic Compatibility (EMC, Electromagnetic Compatibility) refers to that equipment or system can normally be run in its electromagnetic environment, any equipment in this environment is not produced to the ability of intolerable electromagnetic interference (EMI).Electro Magnetic Compatibility refers to that equipment can not exceed certain limit value to the electromagnetic interference (EMI) that place environment produces in normal course of operation on the one hand; Refer to that equipment has immunity to interference to a certain degree to the electromagnetic interference (EMI) existed in the environment on the other hand.
When utilizing anechoic chamber, to carry out testing research work to the Electro Magnetic Compatibility of test product, the electromagnetic signal to product to be measured sends is needed to detect, in order to judge whether the function of product to be measured meets designing requirement.Traditional anechoic chamber, is when testing product to be measured, and product to be measured is positioned on rotatable platform, can test in fixed position to the Electro Magnetic Compatibility of product to be measured, but cannot test the product to be measured be spatially kept in motion.Because some product to be measured also may be moved while use procedure, the electromagnetic wave sent may change, and therefore the Electro Magnetic Compatibility of the product to be measured be kept in motion is tested to also can not be ignored.Treat.
On the other hand, the effectiveness of anechoic chamber, is also the key factor of restriction emc testing result accuracy, and the effectiveness how improving anechoic chamber, is the primary study direction of industry.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of Electro Magnetic Compatibility supervisory system, can test, and obtain test result accurately to the product be kept in motion.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of Electro Magnetic Compatibility supervisory system, described Electro Magnetic Compatibility supervisory system comprises anechoic chamber, the outside surface of described anechoic chamber, is coated with for shielding electromagnetic sheet metal, described sheet metal ground connection, the inside surface of described anechoic chamber, is pasted with the absorption layer for electromagnetic wave absorption, the surface distributed of described absorption layer has multiple pyramid cavernous body, and the middle part of the height of described pyramid cavernous body from the corner of described absorption layer to absorption layer increases progressively successively, the turntable carrying product to be measured is provided with in described anechoic chamber, the fixed station be rotationally connected with described turntable, with described turntable separated by a distance for receiving the electromagnetic antenna that test products sends, the arc-shaped rail centered by described antenna is equipped with in described anechoic chamber, described fixed station and described arc-shaped rail are slidably connected, amplifier and receiver is provided with outside described anechoic chamber, described amplifier is connected by concentric cable with described receiver with described antenna respectively.
Preferably, described fixed station is provided with pulley and stepper motor, and described pulley and described arc-shaped rail are slidably connected, and described in described driving stepper motor, pulley reciprocatingly slides on described arc-shaped rail with setting speed.
Preferably, described anechoic chamber, is also provided with rejection filter outward, and described rejection filter is connected between described antenna and described amplifier, for filtering out the noise in band resistance frequency range.
The invention has the beneficial effects as follows: the situation being different from prior art, the pyramid cavernous body that anechoic chamber, in Electro Magnetic Compatibility supervisory system of the present invention adopts increases progressively from corner successively to middle part, effectiveness can be strengthened, lay the arc-shaped rail centered by antenna simultaneously, product to be measured slidably connects on arc-shaped rail, thus can the product be kept in motion be tested, and obtain test result accurately, the emc testing requirement of most of product, particularly mobile terminal can be met.
Accompanying drawing explanation
Fig. 1 is the front view of embodiment of the present invention Electro Magnetic Compatibility supervisory system.
Fig. 2 is the vertical view of embodiment of the present invention Electro Magnetic Compatibility supervisory system.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this instructions, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Consult Fig. 1 and Fig. 2, the Electro Magnetic Compatibility supervisory system of the embodiment of the present invention comprises anechoic chamber, 1, the outside surface of anechoic chamber, 1 is coated with for shielding electromagnetic sheet metal 11, sheet metal 11 ground connection, the inside surface of anechoic chamber, 1 is pasted with the absorption layer 12 for electromagnetic wave absorption, the surface distributed of absorption layer 12 has multiple pyramid cavernous body 13, and the middle part of the height of pyramid cavernous body 13 from the corner of absorption layer 12 to absorption layer 12 increases progressively successively, the turntable 2 carrying product to be measured is provided with in anechoic chamber, 1, the fixed station 3 be rotationally connected with turntable 2, with turntable 2 separated by a distance for receiving the electromagnetic antenna 4 that test products sends, the arc-shaped rail 5 centered by antenna 4 is equipped with in anechoic chamber, 1, fixed station 3 and arc-shaped rail 5 are slidably connected, amplifier 6 and receiver 7 is provided with outside anechoic chamber, 1, amplifier 6 is connected by concentric cable with receiver 7 with antenna 4 respectively.Amplifier 6 transfers to receiver 7 after amplifying for the electromagnetic wave received by antenna 4 and processes, and receiver 7 obtains emc testing result after processing.
Specifically, fixed station 3 is provided with pulley 31 and stepper motor (not shown), pulley 31 and arc-shaped rail 5 are slidably connected, and driving stepper motor pulley 31 reciprocatingly slides on arc-shaped rail 5 with setting speed, thus can test the product be kept in motion.Such as, when product to be measured is mobile phone, the speed of travel that setting speed is behaved.
Wherein, sheet metal 11 is iron, aluminium or copper coin.Absorption layer 12 adopts Ferrite Material, and pyramid cavernous body 13 is conductive sponge.The height of pyramid cavernous body 13 middle part from the corner of absorption layer 12 to absorption layer 12 increases progressively successively, effectively can improve the electro-magnetic wave absorption performance of anechoic chamber, 1, can obtain test result accurately after test terminates.
In the present embodiment, anechoic chamber, 1 is outer is also provided with rejection filter 8, and rejection filter 8 is connected between antenna 4 and amplifier 6, for filtering out the noise in band resistance frequency range.
By the way, the pyramid cavernous body that anechoic chamber, in Electro Magnetic Compatibility supervisory system of the present invention adopts increases progressively from corner successively to middle part, effectiveness can be strengthened, lay the arc-shaped rail centered by antenna simultaneously, product to be measured slidably connects on arc-shaped rail, thus can test the product be kept in motion, and obtains test result accurately, the emc testing requirement of most of product, particularly mobile terminal can be met.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. an Electro Magnetic Compatibility supervisory system, it is characterized in that, described Electro Magnetic Compatibility supervisory system comprises anechoic chamber, the outside surface of described anechoic chamber, is coated with for shielding electromagnetic sheet metal, described sheet metal ground connection, the inside surface of described anechoic chamber, is pasted with the absorption layer for electromagnetic wave absorption, the surface distributed of described absorption layer has multiple pyramid cavernous body, and the middle part of the height of described pyramid cavernous body from the corner of described absorption layer to absorption layer increases progressively successively, the turntable carrying product to be measured is provided with in described anechoic chamber, the fixed station be rotationally connected with described turntable, with described turntable separated by a distance for receiving the electromagnetic antenna that test products sends, the arc-shaped rail centered by described antenna is equipped with in described anechoic chamber, described fixed station and described arc-shaped rail are slidably connected, amplifier and receiver is provided with outside described anechoic chamber, described amplifier is connected by concentric cable with described receiver with described antenna respectively.
2. Electro Magnetic Compatibility supervisory system according to claim 1, it is characterized in that, described fixed station is provided with pulley and stepper motor, and described pulley and described arc-shaped rail are slidably connected, and described in described driving stepper motor, pulley reciprocatingly slides on described arc-shaped rail with setting speed.
3. Electro Magnetic Compatibility supervisory system according to claim 1, it is characterized in that, described anechoic chamber, is also provided with rejection filter outward, and described rejection filter adopts concentric cable to be connected between described antenna and described amplifier, for filtering out the noise in band resistance frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735752.2A CN104360209A (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735752.2A CN104360209A (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility monitoring system |
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| CN104360209A true CN104360209A (en) | 2015-02-18 |
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| CN201410735752.2A Pending CN104360209A (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086377A (en) * | 2017-04-21 | 2017-08-22 | 北京航空航天大学 | The suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom |
| CN107607796A (en) * | 2017-09-12 | 2018-01-19 | 中国电子科技集团公司第四十研究所 | A kind of track-type facilities for microwave dark room antenna measurement |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| CN110389244A (en) * | 2018-04-17 | 2019-10-29 | 罗德施瓦兹两合股份有限公司 | Measuring system and method for operating measuring system |
| WO2020061747A1 (en) * | 2018-09-25 | 2020-04-02 | 深圳市中承科技有限公司 | Shielding device for wireless testing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086377A (en) * | 2017-04-21 | 2017-08-22 | 北京航空航天大学 | The suction wave reflection battle array control device of feed mirror image beam in a kind of Compact Range darkroom |
| CN107086377B (en) * | 2017-04-21 | 2020-07-03 | 北京航空航天大学 | Wave-absorbing reflective array control device for feed mirror beam in compact field darkroom |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| CN107607796A (en) * | 2017-09-12 | 2018-01-19 | 中国电子科技集团公司第四十研究所 | A kind of track-type facilities for microwave dark room antenna measurement |
| CN107607796B (en) * | 2017-09-12 | 2019-12-03 | 中国电子科技集团公司第四十一研究所 | A kind of track-type facilities for microwave dark room antenna measurement |
| CN110389244A (en) * | 2018-04-17 | 2019-10-29 | 罗德施瓦兹两合股份有限公司 | Measuring system and method for operating measuring system |
| WO2020061747A1 (en) * | 2018-09-25 | 2020-04-02 | 深圳市中承科技有限公司 | Shielding device for wireless testing |
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Application publication date: 20150218 |