CN204228869U - Electromagnetic compatibility detection system - Google Patents
Electromagnetic compatibility detection system Download PDFInfo
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- CN204228869U CN204228869U CN201420760965.6U CN201420760965U CN204228869U CN 204228869 U CN204228869 U CN 204228869U CN 201420760965 U CN201420760965 U CN 201420760965U CN 204228869 U CN204228869 U CN 204228869U
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- anechoic chamber
- photoelectric commutator
- absorption layer
- electromagnetic
- arc
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- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model discloses a kind of electromagnetic compatibility detection system.It comprises anechoic chamber, the outside surface of anechoic chamber, is coated with the electromagnetic sheet metal of shielding, the inside surface of anechoic chamber, is pasted with the absorption layer of electromagnetic wave absorption, the surface distributed of absorption layer has multiple pyramid cavernous body, and the middle part of the height of pyramid cavernous body from the corner of absorption layer to absorption layer increases progressively successively, the turntable carrying product to be measured is provided with in anechoic chamber, the fixed station be rotationally connected with turntable, the multi-path antenna separated by a distance with turntable and the first photoelectric commutator be connected with multi-path antenna, the arc-shaped rail centered by antenna is equipped with in anechoic chamber, fixed station and arc-shaped rail are slidably connected, amplifier is provided with outside anechoic chamber, second photoelectric commutator and receiver, second photoelectric commutator is connected with receiver.The utility model can be tested the product be kept in motion, and utilizes the multiple electromagnetic wave of single-path optical fiber parallel transmission simultaneously, and obtains test result accurately.
Description
Technical field
The utility model relates to electromagnetic compatibility test field, particularly relates to a kind of electromagnetic compatibility detection 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, the electromagnetic wave of product to be measured is inputed to outside through photoelectric commutator by usual employing optical fiber, but when product to be measured sends multiple electromagnetic wave, the quantity of photoelectric commutator can the corresponding increase along with the increase of electromagnetic wave quantity, and product to be measured is positioned on rotatable platform, can test the Electro Magnetic Compatibility of product to be measured in fixed position, but cannot the product to be measured be spatially kept in motion be tested.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.
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.
Utility model content
The technical matters that the utility model mainly solves is to provide a kind of electromagnetic compatibility detection system, can test the product be kept in motion, and utilizes the multiple electromagnetic wave of single-path optical fiber parallel transmission simultaneously, and obtains test result accurately.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of electromagnetic compatibility detection system, described electromagnetic compatibility detection 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 multiple electromagnetic multi-path antenna that described product to be measured sends and the first photoelectric commutator be connected with described multi-path antenna respectively, 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, the second photoelectric commutator is provided with outside described anechoic chamber, amplifier and receiver, described second photoelectric commutator is connected with described receiver, described amplifier is connected by optical fiber with described second photoelectric commutator with described first photoelectric commutator 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 adopts Fiber connection between described second photoelectric commutator and described amplifier, for filtering out the noise in band resistance frequency range.
The beneficial effects of the utility model are: the situation being different from prior art, the pyramid cavernous body that anechoic chamber, in electromagnetic compatibility detection system of the present utility model 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, and rely on multi-path antenna and photoelectric commutator coordinate to come the multiple electromagnetic wave of parallel transmission, thus can the product be kept in motion be tested, utilize the multiple electromagnetic wave of single-path optical fiber parallel transmission simultaneously, and obtain test result accurately, most of product can be met, the particularly emc testing requirement of mobile terminal.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model embodiment electromagnetic compatibility detection system.
Fig. 2 is the vertical view of the utility model embodiment electromagnetic compatibility detection 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 electromagnetic compatibility detection system of the utility model embodiment 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 multiple electromagnetic multi-path antenna 4 that product to be measured sends and the first photoelectric commutator 5 be connected with multi-path antenna 4 respectively, the arc-shaped rail 6 centered by antenna 4 is equipped with in anechoic chamber, 1, fixed station 3 and arc-shaped rail 6 are slidably connected, amplifier 7 is provided with outside anechoic chamber, 1, second photoelectric commutator 8 and receiver 9, second photoelectric commutator 8 is connected with receiver 9, amplifier 7 is connected by optical fiber with the second photoelectric commutator 8 with the first photoelectric commutator 5 respectively.First photoelectric commutator 5 is converted to light signal for the electromagnetic wave received by multi-path antenna 4, amplifier 6 is for transferring to the second photoelectric commutator 8 after optical signal amplification, second photoelectric commutator 8 is for being reduced to multiple electromagnetic wave by light signal, and multiple electromagnetic wave is sent to receiver 9 processes, receiver 9 obtains emc testing result after processing.The multiple electromagnetic waves received due to multi-path antenna 4 are converted to light signal by the first photoelectric commutator 5, thus can realize multiple electromagnetic wave parallel transmission.
Specifically, fixed station 3 is provided with pulley 31 and stepper motor (not shown), pulley 31 and arc-shaped rail 6 are slidably connected, and driving stepper motor pulley 31 reciprocatingly slides on arc-shaped rail 6 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 10, and rejection filter 10 is connected between the second photoelectric commutator 8 and amplifier 7, for filtering out the noise in band resistance frequency range.
By the way, the pyramid cavernous body that anechoic chamber, in electromagnetic compatibility detection system of the present utility model 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, and rely on multi-path antenna and photoelectric commutator coordinate to come the multiple electromagnetic wave of parallel transmission, thus can the product be kept in motion be tested, utilize the multiple electromagnetic wave of single-path optical fiber parallel transmission simultaneously, and obtain test result accurately, most of product can be met, the particularly emc testing requirement of mobile terminal.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions 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 utility model.
Claims (3)
1. an electromagnetic compatibility detection system, it is characterized in that, described electromagnetic compatibility detection 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 multiple electromagnetic multi-path antenna that described product to be measured sends and the first photoelectric commutator be connected with described multi-path antenna respectively, 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, the second photoelectric commutator is provided with outside described anechoic chamber, amplifier and receiver, described second photoelectric commutator is connected with described receiver, described amplifier is connected by optical fiber with described second photoelectric commutator with described first photoelectric commutator respectively.
2. electromagnetic compatibility detection 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. electromagnetic compatibility detection 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 Fiber connection between described second photoelectric commutator and described amplifier, for filtering out the noise in band resistance frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760965.6U CN204228869U (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420760965.6U CN204228869U (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility detection system |
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| Publication Number | Publication Date |
|---|---|
| CN204228869U true CN204228869U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420760965.6U Expired - Fee Related CN204228869U (en) | 2014-12-04 | 2014-12-04 | Electromagnetic compatibility detection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407257A (en) * | 2014-12-04 | 2015-03-11 | 成都思邦力克科技有限公司 | Electromagnetic compatibility detecting system |
| CN106646045A (en) * | 2016-12-21 | 2017-05-10 | 工业和信息化部电信研究院 | System for high-frequency and low-frequency radiation disturbance test of semi-anechoic chamber through 10-meter method |
| CN106771673A (en) * | 2017-03-07 | 2017-05-31 | 安徽江淮汽车集团股份有限公司 | A kind of gps antenna directionality method of testing and system |
| CN110542809A (en) * | 2019-08-19 | 2019-12-06 | 深圳立讯检测股份有限公司 | Method for testing radiation immunity of radio frequency electromagnetic field of transmission type electronic equipment |
-
2014
- 2014-12-04 CN CN201420760965.6U patent/CN204228869U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407257A (en) * | 2014-12-04 | 2015-03-11 | 成都思邦力克科技有限公司 | Electromagnetic compatibility detecting system |
| CN106646045A (en) * | 2016-12-21 | 2017-05-10 | 工业和信息化部电信研究院 | System for high-frequency and low-frequency radiation disturbance test of semi-anechoic chamber through 10-meter method |
| CN106771673A (en) * | 2017-03-07 | 2017-05-31 | 安徽江淮汽车集团股份有限公司 | A kind of gps antenna directionality method of testing and system |
| CN106771673B (en) * | 2017-03-07 | 2019-08-06 | 安徽江淮汽车集团股份有限公司 | A kind of GPS antenna directionality test method and system |
| CN110542809A (en) * | 2019-08-19 | 2019-12-06 | 深圳立讯检测股份有限公司 | Method for testing radiation immunity of radio frequency electromagnetic field of transmission type electronic equipment |
| CN110542809B (en) * | 2019-08-19 | 2021-05-28 | 深圳立讯检测股份有限公司 | Method for testing radiation immunity of radio frequency electromagnetic field of transmission type electronic equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151204 |
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| EXPY | Termination of patent right or utility model |