CN102967772B - Two-dimension full automatic electromagnetic field distribution testing system - Google Patents
Two-dimension full automatic electromagnetic field distribution testing system Download PDFInfo
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- CN102967772B CN102967772B CN201210449262.7A CN201210449262A CN102967772B CN 102967772 B CN102967772 B CN 102967772B CN 201210449262 A CN201210449262 A CN 201210449262A CN 102967772 B CN102967772 B CN 102967772B
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Abstract
The invention relates to a two-dimension full automatic electromagnetic field distribution testing system and belongs to the technical field of electromagnetic field experimental testing. The system comprises a two-dimension electric control translation platform, a vector network analyzer, a waveguide testing system and a control and data processing system, the waveguide testing system comprises a sending pole antenna, a receiving pole antenna, an upper metal plate, a lower metal plate, a wave absorbing material, a parallel waveguide testing cavity and a testing cavity opening device, and the parallel waveguide testing cavity is formed by the upper metal plate and the lower metal plate. The position of a receiving pole on the upper metal plate is changed so that the system can achieve electromagnetic field measurement of larger spacial ranges and large electromagnetic wave scanning frequencies; the moving of the receiving pole antenna in a vertical direction is controlled so that the measurement of electromagnetic fields with different heights can be achieved; and two sending modes of point sources and plane wave sources can be achieved, the electromagnetic fields in a parallel waveguide testing cavity can be rapidly, accurately and full automatically scanned and tested, and the two-dimension full automatic electromagnetic field distribution testing system has important application to the field of electromagnetic field experimental testing.
Description
Technical field
The present invention relates to a kind of two-dimentional fully automatic electric Distribution of Magnetic Field test macro, belong to electromagnetic field experiment test technical field.
Background technology
All the time, the development of electromagnetics in theory experiment and practical application is limited by the development of electromagnetic field measuring technology to a great extent.Such as in the research of zero refracting characteristic carrying out Meta Materials, need to produce comparatively stable typical electrical Distribution of Magnetic Field, and comparatively accurately realize the measurement to amplitude in field and phase angle.The test macro of such function can be realized, following characteristic should be had: 1) can plane space in a big way be measured.2) receiving pole sub antenna can move in vertical direction, makes test result can reflect electromagnetic field change in vertical direction.3) test macro can realize several different typical electrical Distribution of Magnetic Field.4) test macro can realize the robotization of higher degree in experiment test and Experiment Data Records process.
Have some experiment test platforms that can be used for electromagnetic field measurements both at home and abroad at present, but its application still has certain limitation at present, because its test specification is less, and its receiving pole sub antenna does not have the freedom of motion of in the vertical direction, make its energy extremely received by son less, test effect is poor.The shortcomings such as meanwhile, the upper metal plate of current existing test platform hoists and bracing or strutting arrangement exists complex structure, operation inconvenience.
Summary of the invention
The object of the present invention is to provide a kind of two-dimentional fully automatic electric Distribution of Magnetic Field test macro, more adequately can realize the two-dimensional measurement to external electromagnetic field in a big way, and there is the advantages such as easy to use, higher stability and rapidity.
Technical scheme of the present invention is as follows:
A kind of two-dimentional fully automatic electric Distribution of Magnetic Field test macro, comprises two-dimentional electronic control translation stage, vector network analyzer, waveguide test macro, control and data handling system and base plate; Described waveguide test macro comprises emitter sub antenna, receiving pole sub antenna, upper metal plate, lower metal plate, absorbing material, the parallel waveguide test chamber be made up of upper and lower two pieces of metal plates and test chamber opening device; Described emitter sub antenna is installed on lower metal plate, receiving pole sub antenna is installed in the mounting hole of metal plate, test chamber opening device is connected with upper metal plate, and absorbing material is positioned at the upper surface of lower metal plate, and lower metal plate is arranged on two-dimentional electronic control translation stage; Emitter sub antenna and receiving pole sub antenna are connected by coaxial waveguide conversion line with vector network analyzer, it is characterized in that: described test macro also comprises receiving pole sub antenna arrangement for adjusting height, this regulating device comprises steering wheel and fork, fork has chute, fork is connected with steering wheel output shaft, receiving pole sub antenna is provided with bearing pin, and bearing pin is installed in chute; Upper metal plate is furnished with three receiving pole sub antenna mounting holes in X direction, and receiving pole sub antenna is arranged in one of them hole.
Technical characteristic of the present invention is also: described test chamber opening device comprises four cover openers, four cover openers are arranged symmetrically on base plate, often cover comprises metal plate bracing frame, support bar and setting nut, support bar one end by upper metal plate hinge and upper metal plate hinged, the other end is hinged by bracing frame hinge and upper metal plate bracing frame, adjusting nut is arranged on support bar, and upper metal plate bracing frame is fixed on base plate; Two dimension electronic control translation stage comprises two guide rails being parallel to X-axis, X-direction screw nut driven mechanism and Y-direction screw nut driven mechanisms, wherein X-direction screw nut driven mechanism comprises X to stepper motor, X-direction leading screw and X-direction slide block, Y-direction screw nut driven mechanism comprises Y-direction stepper motor, Y-direction leading screw and Y-direction slide block; First guide rail and the second guide rail parallel are arranged on base plate, X-direction slider frame is located on Article 1 guide rail and Article 2 guide rail, and form lead screw transmission relation with X-direction leading screw, Y-direction slide block, Y-direction leading screw and Y-direction stepper motor are arranged in X-direction slide block, and Y-direction slide block and Y-direction leading screw form lead screw transmission relation.
The present invention, compared with existing electromagnetic field measurements plateform system, has the following advantages and high-lighting effect:
Owing to present invention employs receiving pole sub antenna arrangement for adjusting height, test received energy can be made adjustable in a big way, thus retrofit testing effect; By changing receiving pole sub antenna can to realize in a big way electromagnetic field measurements in the position of upper metal plate; By the motion in the vertical direction of servos control receiving pole, the sub energy received of receiving pole can be realized adjustable; Point source and plane wave source two kinds of emission modes can be realized, and the electromagnetic field in parallel waveguide test chamber can be tested by accurate automatically scanning fast.
Accompanying drawing explanation
Fig. 1 is two-dimentional fully automatic electric Distribution of Magnetic Field test system structure principle schematic.
Fig. 2 is upper metal plate schematic diagram.
Fig. 3 is receiving pole sub antenna arrangement for adjusting height schematic diagram of mechanism.
Fig. 4 is the structural representation of the two-dimentional electronic control translation stage after removing metal plate.
Fig. 5 is the test chamber opening device schematic diagram of test chamber when closing.
Test chamber opening device schematic diagram when Fig. 6 is test chamber unlatching.
Fig. 7 is the enlarged drawing of bracing frame and support bar junction in opener.
Fig. 8 is the point source type magnetic distribution schematic diagram realized in test zone.
Fig. 9 is the plane wave mode magnetic distribution schematic diagram realized in test zone.
In figure: the slide block of 1-Y direction; 2-X direction slide block; 3,4-guide rail; 5-Y is to motion leading screw; 6-X is to motion leading screw; 7-mounting hole; 8-steering wheel; 9-receiving pole sub antenna; The upper metal plate of 10-; 11-emitter sub antenna; 12-absorbing material; 13-electromagnetic wave wave front; The upper metal plate bracing frame of 14-; Metal plate under 15-; 16-Y is to stepper motor; 17-coaxial cable; 18-setting nut; 19-support bar; 20-vector network analyzer; 21-X is to stepper motor; 22-X is to alignment sensor; 23-Y is to alignment sensor; 24-two dimension electronic control translation stage; 25-parallel waveguide test chamber; 26-test chamber opening device; 27-fork; 28-bearing pin; The upper metal plate hinge of 29-; 30-computing machine; 31-bracing frame hinge; 32-base plate; 40-controller.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention, principle of work and the course of work are described further.
Fig. 1 is two-dimentional fully automatic electric Distribution of Magnetic Field test system structure principle schematic, comprises two-dimentional electronic control translation stage 24, vector network analyzer 20, waveguide test macro, control and data handling system and base plate 32; Described waveguide test macro comprises emitter sub antenna 11, receiving pole sub antenna 9, upper metal plate 10, lower metal plate 15, absorbing material 12, the parallel waveguide test chamber 25 be made up of upper and lower two pieces of metal plates and test chamber opening device 26; Described emitter sub antenna 11 is installed on lower metal plate 15, receiving pole sub antenna 9 is installed in the mounting hole 7 of metal plate 10, test chamber opening device 26 is connected with upper metal plate 10, absorbing material 12 is positioned at the upper surface of lower metal plate 15, and lower metal plate 15 is arranged on two-dimentional electronic control translation stage 24; Described control and data handling system comprise coaxial waveguide conversion line 17, vector network analyzer 20, computing machine 30, controller 40; Emitter sub antenna 11 and receiving pole sub antenna 9 are connected with vector network analyzer 20 by coaxial waveguide conversion line 17, vector network analyzer 20 is connected with computing machine 30 by netting twine, computing machine 30 is connected with controller 40 by USB line, and controller 40 is connected to stepper motor 21 and Y-direction stepper motor 16 with the X in two-dimentional electronic control translation stage 24 by cable.When system works, first two-dimentional electronic control translation stage move is sent by computing machine 30 to controller 40, instruction is delivered to X in two-dimentional electronic control translation stage 24 to stepper motor 21 and Y-direction stepper motor 16 by controller 40, makes two-dimentional electronic control translation stage 24 move to the position needing test.Computing machine 30 sends test instruction to vector network analyzer 20 subsequently, namely vector network analyzer 20 is launched needing the electromagnetic signal sent to be transported to emitter sub antenna 11 by coaxial waveguide conversion line 17, the electromagnetic signal of launching is after parallel waveguide test chamber, received by receiving pole sub antenna 9, vector network analyzer 20 is transmitted back to subsequently by coaxial waveguide conversion line 17, the signal received is flowed to computing machine 30 by vector network analyzer 20, namely completes the test of a point.Computing machine 30 sends two-dimentional electronic control translation stage move to controller 40 again subsequently, carries out the test of next position.
Fig. 2 is upper metal plate schematic diagram.Upper metal plate 10 is supported by test chamber opening device 26.Test chamber opening device 26 comprises four cover openers, four cover openers are arranged symmetrically on base plate 32, often cover comprises metal plate bracing frame 14, support bar 19 and setting nut 18, support bar 19 one end is hinged with upper metal plate 10 by upper metal plate hinge 29, the other end is hinged by bracing frame hinge 31 and upper metal plate bracing frame 14, adjusting nut 18 is arranged on support bar 19, and upper metal plate bracing frame 14 is fixed on base plate 32.Upper metal plate 10 is furnished with three receiving pole sub antenna mounting holes 7 in X direction, and receiving pole sub antenna is arranged in one of them hole.Receiving pole is arranged in different pilot holes, the function of enlarge measurement range can be realized.
Fig. 3 is receiving pole sub antenna arrangement for adjusting height schematic diagram of mechanism.This regulating device comprises steering wheel 8 and fork 27, fork 27 has chute, and fork 27 is connected with steering wheel 8 output shaft, and receiving pole sub antenna 9 is provided with bearing pin 28, bearing pin 28 is installed in chute, and receiving pole sub antenna 9 is arranged in the mounting hole 7 on metal plate 10.During the output shaft rotation of steering wheel 8, drive fork 27 to rotate, fork 27 drives receiving pole sub antenna 9 to carry out the motion of vertical direction, the rotation of steering wheel has been become the movement in vertical direction of receiving pole.The sub displacement of moving in vertical direction of receiving pole can be controlled by the anglec of rotation controlling steering wheel, thus control the height of receiving pole.
Fig. 4 is the motion sketch of the two-dimentional electronic control translation stage after removing metal plate.Two dimension electronic control translation stage comprises the guide rail that two are parallel to X-axis, and X-direction screw nut driven mechanism and Y-direction screw nut driven mechanism, wherein X-direction screw nut driven mechanism comprises X to stepper motor 21, X-direction leading screw (6) and X-direction slide block 2, and Y-direction screw nut driven mechanism comprises Y-direction stepper motor 16, Y-direction leading screw 5 and Y-direction slide block 1; First guide rail 3 and the second guide rail 4 are installed in parallel on base plate 32, X-direction slide block 2 is erected on Article 1 guide rail 3 and Article 2 guide rail 4, and form lead screw transmission with X-direction leading screw 6, Y-direction slide block 1, Y-direction leading screw 5 and Y-direction stepper motor 16 are arranged in X-direction slide block 2, and Y-direction slide block 1 and Y-direction leading screw 5 form lead screw transmission.When X-direction leading screw 6 by X to stepper motor 21 driven rotary time, X-direction slide block 2 can move in X-direction; Y-direction leading screw 5 is fixed on X-direction slide block 2, and forms lead screw transmission with Y-direction slide block 1, when Y-direction stepper motor 16 rotarily drive Y-direction leading screw 5 rotate time, Y-direction slide block 1 can move in the Y direction; By the synthesis of two motions of Y-direction and X-direction, slide block 1 can realize the random two-dimensional motion in XY plane.
Fig. 5 is the test chamber opening device schematic diagram of test chamber when closing, and Fig. 6 is the test chamber opening device schematic diagram of test chamber when opening, and Fig. 7 is the enlarged drawing of bracing frame hinge fraction.Test chamber opening device 26 comprises four cover openers, four cover openers are arranged symmetrically on base plate 32, often cover comprises metal plate bracing frame 14, support bar 19 and setting nut 18, support bar 19 one end is hinged with upper metal plate 10 by upper metal plate hinge 29, the other end is hinged by bracing frame hinge 31 and upper metal plate bracing frame 14, adjusting nut 18 is arranged on support bar 19, and upper metal plate bracing frame 14 is fixed on base plate 32.When test chamber opened by needs, metal plate 10 in promotion, support bar 19 rotates and metal plate 10 is risen, and as Fig. 6, now going up metal plate 10 can support by leaning against on bracing frame 14.By setting nut 18, the spacing between upper and lower metal plate can be regulated, thus regulate height and the depth of parallelism of parallel waveguide.
Fig. 8 is the point source type magnetic distribution schematic diagram realized in test zone, and Fig. 9 is the plane wave mode magnetic distribution schematic diagram realized in test zone.Native system can form two kinds of typical magnetic distribution by the placement of extremely sub diverse location and absorbing material: one is emitter 11 is placed in lower metal plate test zone center, absorbing material 12 is placed in complete circumference, electromagnetic wave will form circular wavefront from center outgoing, power-type magnetic distribution can be formed, as shown in Figure 8; Two is be placed in waveguide by emitter, makes its segment distance of first advancing in waveguide, enters subsequently in border circular areas.Due to the effect of waveguide, make electromagnetic wave from being no longer circular wave front during the outgoing of waveguide mouth, and define parallel wavefronts, thus define plane wave mode magnetic distribution, as shown in Figure 9.These two kinds of typical magnetic distribution have more application when experiment test.
Claims (2)
1. a two-dimentional fully automatic electric Distribution of Magnetic Field test macro, comprises two-dimentional electronic control translation stage (24), vector network analyzer (20), waveguide test macro, control and data handling system and base plate (32); Described waveguide test macro comprises emitter sub antenna (11), receiving pole sub antenna (9), upper metal plate (10), lower metal plate (15), absorbing material (12), the parallel waveguide test chamber (25) be made up of upper and lower two pieces of metal plates and test chamber opening device (26); Described emitter sub antenna (11) is installed on lower metal plate (15), receiving pole sub antenna (9) is installed in the mounting hole (7) of metal plate (10), test chamber opening device (26) is connected with upper metal plate (10), absorbing material (12) is positioned at the upper surface of lower metal plate (15), and lower metal plate (15) is arranged on two-dimentional electronic control translation stage (24); Emitter sub antenna (11) and receiving pole sub antenna (9) are connected by coaxial waveguide conversion line (17) with vector network analyzer (20), it is characterized in that: emitter sub antenna (11) is installed on the center of lower metal plate (15); Described test macro also comprises receiving pole sub antenna arrangement for adjusting height, this regulating device comprises steering wheel (8) and fork (27), fork (27) has chute, and fork (27) is connected with steering wheel (8) output shaft; Receiving pole sub antenna is provided with bearing pin (28), and bearing pin (28) is installed in described chute; Upper metal plate (10) is furnished with three receiving pole sub antenna mounting holes (7) in X direction, and receiving pole sub antenna (9) is arranged in one of them hole;
Described test chamber opening device (26) comprises four cover openers, four cover openers are arranged symmetrically on base plate (32), often cover comprises metal plate bracing frame (14), support bar (19) and setting nut (18), support bar (19) one end is hinged by upper metal plate hinge (29) and upper metal plate (10), the other end is hinged by bracing frame hinge (31) and upper metal plate bracing frame (14), adjusting nut (18) is arranged on support bar (19), upper metal plate bracing frame (14) is fixed on base plate (32).
2. two-dimentional fully automatic electric Distribution of Magnetic Field test macro according to claim 1, it is characterized in that: described two-dimentional electronic control translation stage comprises two guide rails being parallel to X-axis, X-direction screw nut driven mechanism and Y-direction screw nut driven mechanisms, wherein X-direction screw nut driven mechanism comprises X to stepper motor (21), X-direction leading screw (6) and X-direction slide block (2), and Y-direction screw nut driven mechanism comprises Y-direction stepper motor (16), Y-direction leading screw (5) and Y-direction slide block (1); Article two, the first guide rail (3) and the second guide rail (4) that are parallel to X-axis are installed in parallel on base plate (32), described X-direction slide block (2) is erected on Article 1 guide rail (3) and Article 2 guide rail (4), and form lead screw transmission relation with X-direction leading screw (6), Y-direction slide block (1), Y-direction leading screw (5) and Y-direction stepper motor (16) are arranged in X-direction slide block (2), and Y-direction slide block (1) and Y-direction leading screw (5) form lead screw transmission relation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210449262.7A CN102967772B (en) | 2012-11-09 | 2012-11-09 | Two-dimension full automatic electromagnetic field distribution testing system |
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| CN201210449262.7A CN102967772B (en) | 2012-11-09 | 2012-11-09 | Two-dimension full automatic electromagnetic field distribution testing system |
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| CN102967772A CN102967772A (en) | 2013-03-13 |
| CN102967772B true CN102967772B (en) | 2015-05-20 |
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| CN104215918A (en) * | 2014-09-25 | 2014-12-17 | 中国工程物理研究院流体物理研究所 | Chamber two-dimensional distribution measuring device |
| CN104459347B (en) * | 2014-11-24 | 2017-03-29 | 成都盛军电子设备有限公司 | A kind of equipment for being easy to electromagnetic environment monitor equipment to be monitored |
| CN108872268A (en) * | 2018-07-06 | 2018-11-23 | 深圳凌波近场科技有限公司 | Parallel flat waveguide measuring device and method |
| CN108872269B (en) * | 2018-07-06 | 2023-05-26 | 深圳凌波近场科技有限公司 | Near-field electromagnetic wave measuring system and multifunctional near-field electromagnetic wave measuring method |
| CN109342829B (en) * | 2018-10-08 | 2020-10-30 | 中国人民解放军国防科技大学 | Equivalent simulation method for motion characteristics of electromagnetic radiation source |
| CN110058090B (en) * | 2019-06-05 | 2019-12-03 | 诸暨市圣元塑胶材料有限公司 | A kind of detection device for reducing electromagnetic radiation and electromagnetic radiation being detected |
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| WO2009039481A1 (en) * | 2007-09-20 | 2009-03-26 | University Of South Florida | Reconfigurable chamber for emulating multipath fading |
| CN201262976Y (en) * | 2008-06-13 | 2009-06-24 | 厦门大学 | Fine tuning instrument for half-finished product of microwave ceramic element device |
| JP5217926B2 (en) * | 2008-11-11 | 2013-06-19 | ソニー株式会社 | Electromagnetic wave measuring device |
| JP5644997B2 (en) * | 2009-11-10 | 2014-12-24 | 独立行政法人情報通信研究機構 | Radiated power measuring device and radiated power measuring method |
| CN101713798A (en) * | 2009-11-20 | 2010-05-26 | 北京理工大学 | Device for measuring distribution of internal electric fields of composite material |
| CN201897616U (en) * | 2010-10-27 | 2011-07-13 | 西安空间无线电技术研究所 | Array antenna amplitude-phase detecting device |
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