CN219201375U - Electromagnetic backscattering coefficient measuring device for materials - Google Patents
Electromagnetic backscattering coefficient measuring device for materials Download PDFInfo
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- CN219201375U CN219201375U CN202222974144.XU CN202222974144U CN219201375U CN 219201375 U CN219201375 U CN 219201375U CN 202222974144 U CN202222974144 U CN 202222974144U CN 219201375 U CN219201375 U CN 219201375U
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Abstract
The utility model discloses a device for measuring an electromagnetic backscatter coefficient of a material, which comprises a working platform, a directional antenna, a focusing lens antenna and a vector network analyzer which are arranged on the working platform, and also comprises a to-be-measured material fixing mechanism, wherein the to-be-measured material fixing mechanism is arranged on the working platform through a height adjusting component, and a clamping fixing component is arranged on the to-be-measured material fixing mechanism and is matched with the to-be-measured material; the device can fix the material to be measured according to the thickness and the volume of different materials to be measured when in use through the height adjusting assembly, the material fixing mechanism to be measured and the clamping fixing assembly, and can adjust the position of the material to be measured according to the requirement, so that the focus of the focusing lens wire is beaten on the surface of the material, the measurement precision of the electromagnetic backscatter coefficient of the material to be measured in the measurement process is improved, and the device has the characteristics of simple structure, convenience in use and adjustment and high measurement precision.
Description
Technical Field
The utility model belongs to the technical field of material electromagnetic reflection coefficient measuring equipment, and particularly relates to a device for measuring material electromagnetic reflection coefficient.
Background
In the process of wireless channel simulation and modeling, the backscattering coefficient of the material in the simulation environment has important significance for the simulation, and the accuracy of the material parameter is directly related to the accuracy of the simulation;
the current method for measuring the backscatter coefficient of a material is: after the material is fixed on a working platform, a vector network analyzer is utilized, a lens antenna with a focusing function is connected to a port of the vector network analyzer to be used as a transmitter to emit electromagnetic waves, a directional antenna is connected to the other port of the vector network analyzer to be used as a receiver to receive the electromagnetic waves, under the condition that the receiver and the surface of the material to be tested are scanned for half a circumference in the process of scanning the surface of the receiver and the surface of the material to be tested at a certain angle, the transmitter is enabled to rotate and scan for half a circumference in a horizontal plane perpendicular to the material to be tested, electromagnetic backscattering parameters are recorded, and finally the electromagnetic backscattering parameters are analyzed through software to obtain the backscattering coefficient of the material;
in the above measurement method, the focal point of the focusing lens antenna is required to be exactly located on the surface of the material to be measured, and the angles between the focusing lens antenna and the directional antenna and the surface of the material to be measured must be accurate, which requires that the distance between the material and the lens antenna and the angles between the focusing lens antenna and the directional antenna and the material must be accurately positioned in the measurement; but since in different measurement experiments:
1. the size and thickness of the materials to be measured are different, and the materials to be measured manually placed on the working platform are difficult to accurately enable the focal point of the focusing lens wire to be hit on the surface of the materials, so that the measurement accuracy in the electromagnetic backscattering coefficient measurement process of the materials is reduced;
2. meanwhile, the position of a material to be measured mounting mechanism on the existing working platform is fixed on the working platform, and the material cannot move during use, so that the included angles of the focusing lens antenna and the directional antenna and the material are adjusted to meet the measurement standard, and the measurement accuracy is affected;
therefore, there is a need to design a new measuring device for electromagnetic backscatter coefficients of materials to solve the above-mentioned problems of the prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the electromagnetic backscatter coefficient measuring device for the material, and the device can fix the material to be measured according to the thickness and the volume of different materials to be measured when in use through the arrangement of the height adjusting component, the material fixing mechanism to be measured and the clamping fixing component, and can adjust the position of the material to be measured according to the requirement, so that the focus of the focusing lens wire is beaten on the surface of the material, the measurement precision of the electromagnetic backscatter coefficient of the material to be measured in the measurement process is improved, and the device has the characteristics of simple structure, convenience in use and adjustment and high measurement precision.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a be used for material electromagnetism anti-scattering coefficient measuring device, includes work platform to and directional antenna, focusing lens antenna and the vector network analyzer of setting on work platform, directional antenna and focusing lens antenna coaxial arrangement, and directional antenna and vector network analyzer's electromagnetic wave access port are connected, and focusing lens antenna and vector network analyzer's electromagnetic wave transmitting end are connected, still include the material fixed establishment that awaits measuring, the material fixed establishment that awaits measuring passes through the altitude mixture control subassembly setting on work platform, and is provided with the tight fixed subassembly of clamp on the material fixed establishment that awaits measuring, the tight fixed subassembly of clamp is used with the material cooperation that awaits measuring.
Preferably, the material to be measured fixing mechanism comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate,
the first mounting plate is arranged on the working platform through the height adjusting assembly, and a first radial adjusting guide rail is arranged on the first mounting plate;
the second mounting plate is mounted on the first mounting plate, and a first guide groove is formed in the lower side of the second mounting plate and matched with the first radial adjusting guide rail for use;
the fourth mounting plate is arranged on the second mounting plate, a second guide groove is formed in the fourth mounting plate and is matched with a second horizontal adjusting guide rail arranged on the second mounting plate, and a connecting column is further arranged on the fourth mounting plate;
the third mounting plate is arranged on the fourth mounting plate through the connecting column, and the clamping and fixing assembly is arranged on the third mounting plate and is matched with the material to be tested.
Preferably, the second mounting plate and the fourth mounting plate are provided with positioning holes, the positioning holes are matched with the positioning pieces, and the positioning pieces are matched with the first radial adjusting guide rail and the second horizontal adjusting guide rail.
Preferably, the center of the third mounting plate is also provided with a mounting hole, a bearing is arranged in the mounting hole, the bearing is matched with the connecting column for use, the third mounting plate is also provided with a motor, the driving end of the motor is provided with a gear, and the gear is matched with a gear ring arranged on the third mounting plate for use.
Preferably, the clamping and fixing assembly is arranged on the upper side of the third mounting plate and comprises a bidirectional screw rod, a clamping piece and a first adjusting hand shaft,
the bidirectional screw rod is arranged on the third mounting plate through a screw rod mounting seat;
the clamping pieces are symmetrically arranged on the bidirectional screw rod and are matched with the material to be tested for use;
the first adjusting hand shaft is arranged at one end of the bidirectional screw rod and is fixedly connected with the bidirectional screw rod.
Preferably, the height adjusting component comprises an inclined stay bar, a connecting rod, a second adjusting threaded shaft and a push rod,
the diagonal braces are arranged in pairs to form a pair of scissors-type connecting rod assemblies which are symmetrically arranged;
the connecting rods are arranged between two groups of scissor-type connecting rod assemblies which are symmetrically arranged;
the push rod is arranged at the bottom of the free end of the inclined stay rod, the free ends of the inclined stay rods of two adjacent groups of scissor-type connecting rod assemblies are connected, and a connecting piece is arranged on the push rod;
the second adjusting threaded shaft is connected with the push rod through a connecting piece, and external threads are arranged on the second adjusting threaded shaft to be matched with a threaded seat arranged on the working platform.
The beneficial effects of the utility model are as follows: the utility model discloses a device for measuring electromagnetic backscatter coefficients of materials, which is improved compared with the prior art in that:
1. the utility model designs a device for measuring an electromagnetic backscatter coefficient of a material, which comprises a working platform, a directional antenna, a focusing lens antenna, a material to be measured fixing mechanism and a vector network analyzer, wherein the directional antenna, the focusing lens antenna, the material to be measured and the vector network analyzer are arranged on the working platform;
2. meanwhile, the device is characterized in that the to-be-measured material fixing mechanism is arranged on the working platform through the height adjusting assembly, and the position of the to-be-measured material fixing mechanism can be adjusted according to the measurement requirement and the position of the to-be-measured material when in use; and meanwhile, the clamping and fixing assembly arranged on the material fixing mechanism to be measured is used for fixing the material to be measured, the electromagnetic reflection coefficient of the surface of the material to be measured is measured, and the fixing of the material to be measured with different volumes and the position adjustment of the material to be measured at different positions can be realized, so that the focus of the focusing lens wire is beaten on the surface of the material, the measurement precision of the electromagnetic backscattering coefficient of the material to be measured in the measurement process is improved, and the device has the advantages of simple structure, convenience in use and adjustment and high measurement precision.
Drawings
FIG. 1 is a schematic diagram of a device for measuring electromagnetic backscatter coefficients of materials according to the present utility model.
Fig. 2 is a view showing the installation effect of the fixing mechanism for the material to be tested according to the present utility model.
FIG. 3 is a schematic structural view of a fixing mechanism for a material to be tested according to the present utility model.
Fig. 4 is a schematic view of the structure of the height adjusting assembly of the present utility model.
Fig. 5 is a front view of the holding mechanism for a material to be measured according to the present utility model.
Fig. 6 is a partial enlarged view of the material to be measured fixing mechanism a of the present utility model.
Fig. 7 is a schematic structural view of the clamping member of the present utility model.
Fig. 8 is a bottom view of a third mounting plate of the present utility model.
Fig. 9 is a front view of the connector of the present utility model.
Wherein: 1. the device comprises a platform, 11, a clamping groove part, 111, a lateral limiting groove, 12, a hinging seat, 13, a screw seat, 2, a directional antenna, 3, a focusing lens antenna, 4, a height adjusting component, 41, an inclined supporting rod, 42, a connecting rod, 43, a second adjusting screw shaft, 44, a push rod, 45, a piece, 5, a material fixing mechanism to be tested, 51, a first mounting plate, 511, a first radial adjusting guide rail, 52, a second mounting plate, 521, a second horizontal adjusting guide rail, 522, a first guide groove, 53, a third mounting plate, 531, a screw mounting seat, 532, a gear ring, 54, a fourth mounting plate, 541, a connecting column, 542, a second guide groove, 55, a motor, 56, a gear, 57, a bearing, 6, a material to be tested, 7, a clamping fixing component, 71, a bidirectional screw rod, 72, a clamping piece, 721, a screw seat, 722, 73, a first adjusting hand shaft, 8, a vector network analyzer and 9.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to the accompanying drawings and examples.
Example 1: an electromagnetic backscattering coefficient measuring apparatus for a material is shown with reference to fig. 1 to 9, comprising a working platform 1, and a directional antenna 2, a focusing lens antenna 3, a material to be measured fixing mechanism 5 and a vector network analyzer 8 which are arranged on the working platform 1, wherein
The directional antenna 2 and the focusing lens antenna 3 are coaxially arranged;
the directional antenna 2 is connected with an electromagnetic wave access port of the vector network analyzer 8 through a wire, and is used as a receiver of the vector network analyzer 8 to receive electromagnetic waves, and under the condition that the directional antenna 2 and the surface of the material 6 to be measured are at a certain angle in the process of scanning half a circumference on the surfaces of the directional antenna 2 and the material 6 to be measured, the focusing lens antenna 3 is enabled to rotate and scan half a circumference on a horizontal plane perpendicular to the material to be measured, and electromagnetic backscattering parameters are recorded;
the focusing lens antenna 3 is connected with an electromagnetic wave transmitting end of the vector network analyzer 8 through a wire and is used as a transmitter of the vector network analyzer 8 to transmit electromagnetic waves;
the material to be measured 6 is fixed on the working platform 1 through the material to be measured fixing mechanism 5, the material to be measured fixing mechanism 5 is arranged on the working platform 1 through the height adjusting component 4, and the clamping fixing component 7 is arranged on the material to be measured fixing mechanism 5 to be matched with the material to be measured 6 for use, and the material to be measured 6 is clamped by the clamping fixing component 7 during use, so that the electromagnetic reflection coefficient of the surface of the material to be measured 6 is measured.
Preferably, in order to facilitate fixing the material to be tested 6 and fine-tuning the position of the material to be tested 6 in use, the fixing mechanism 5 for material to be tested is designed to include a first mounting plate 51, a second mounting plate 52, a third mounting plate 53 and a fourth mounting plate 54, wherein
The first mounting plate 51 is mounted on the working platform 1 through the height adjusting assembly 4, and first radial adjusting guide rails 511 are symmetrically arranged on the upper side surface of the first mounting plate 51;
the second mounting plate 52 is mounted on the first mounting plate 51, a first guide groove 522 is formed in the lower side of the second mounting plate 52, the first guide groove 522 is matched with the first radial adjusting guide rail 511 for use, the second mounting plate 52 is movably mounted on the upper side of the first mounting plate 51, and when in use, the position of the second mounting plate 52 on the first mounting plate 51 can be adjusted by adjusting the relative position of the first guide groove 522 and the first radial adjusting guide rail 511, so that the radial adjusting effect of the material 6 to be measured in the mounting process is realized;
the fourth mounting plate 54 is mounted on the second mounting plate 52, and a second guide groove 542 is disposed at the lower side of the fourth mounting plate 54, the second guide groove 542 is used in cooperation with a second horizontal adjustment rail 521 disposed on the second mounting plate 52, the fourth mounting plate 54 is mounted on the upper side of the second mounting plate 52, and when in use, the position of the fourth mounting plate 54 mounted on the second mounting plate 52 can be adjusted by adjusting the relative position of the second guide groove 542 and the second horizontal adjustment rail 521, so as to realize the horizontal adjustment function of the material 6 to be measured in the mounting process; and a connection column 541 integrally formed at the center of the fourth mounting plate 54;
the third mounting plate 53 is rotatably mounted on the upper side of the fourth mounting plate 54 through a connection column 541, and the clamping and fixing assembly 7 is disposed on the third mounting plate 53 and is used in cooperation with the material 6 to be tested.
Preferably, in order to facilitate fixing the relative positions of the first mounting plate 51, the second mounting plate 52 and the fourth mounting plate 54 after adjusting the relative positions of the first mounting plate 51, the second mounting plate 52 and the fourth mounting plate 54, positioning holes are formed in the second mounting plate 52 and the fourth mounting plate 54 and are matched with the positioning piece 9, and the positioning piece 9 is matched with the first radial adjusting rail 511 and the second horizontal adjusting rail 521 for use, that is, the lower end of the positioning piece 9 is propped against the first radial adjusting rail 511 or the second horizontal adjusting rail 521 by using the mutual screwing effect of the positioning piece 9 and the positioning holes when in use, so that the positions of the second mounting plate 52 and the fourth mounting plate 54 are fixed.
Preferably, in order to facilitate the installation of the third installation plate 53 above the fourth installation plate 54, an installation hole is further provided at the center of the third installation plate 53, a bearing 57 is provided in the installation hole, and the bearing 57 is matched with the connection column 541 to realize the rotational connection between the third installation plate 53 and the fourth installation plate 54.
Preferably, in order to facilitate rotating the third mounting plate 53 according to the measurement requirement when in use, a motor 55 is fixedly mounted on the third mounting plate 53, a gear 56 is mounted at the driving end of the motor 55, the gear is matched with a gear ring 532 disposed at the lower side of the third mounting plate 53, and when in use, the motor 55 works to drive the third mounting plate 53 to rotate, so as to adjust the direction of the material 6 to be measured, and facilitate measurement of the electromagnetic reflection coefficient of the material 6 to be measured.
Preferably, in order to effectively clamp the material 6 to be tested in use and avoid the position of the material 6 from being fixed, the clamping and fixing assembly 7 is arranged on the upper side of the third mounting plate 53 and comprises a bidirectional screw rod 71, a clamping piece 72 and a first adjusting hand shaft 73, wherein
The bidirectional screw rod 71 is rotatably mounted on the third mounting plate 53 through a screw rod mounting seat 531, and two sections of wire segments with opposite directions are symmetrically arranged on the bidirectional screw rod 71;
the clamping pieces 72 are symmetrically arranged on the bidirectional screw rod 71 and are matched with the material 6 to be tested for use to clamp the material 6 to be tested;
the first adjusting hand shaft 73 is disposed at one end of the bi-directional screw rod 71 and is fixedly connected with the bi-directional screw rod 71, that is, when in use, the relative distance between the two clamping members 72 is adjusted by rotating the first adjusting hand shaft 73, so as to clamp the material 6 to be tested.
Preferably, the clamping member 72 includes an integrally formed screw seat 721 and a supporting plate 722, the screw seat 721 is in screw connection with the bidirectional screw rod 71, and the supporting plate 722 is disposed between two symmetrically disposed screw seats 721 for fixing the bottom of the material 6 to be tested.
Example 2: unlike embodiment 1, in order to adjust the overall height of the material to be measured fixing mechanism 5 during use to adapt it to the installation of different volume sizes of the material to be measured 6 and to align it with the focusing lens antenna 3, the height adjusting assembly 4 is designed to include a diagonal brace 41, a link 42, a second adjusting screw shaft 43 and a push rod 44, wherein
The diagonal braces 41 are arranged in pairs to form a pair of symmetrically arranged scissor-type connecting rod assemblies;
the connecting rod 42 is arranged between two groups of scissors-type connecting rod assemblies which are symmetrically arranged and connects the two groups of scissors-type connecting rod assemblies;
the push rod 44 is arranged at the bottom of the free end of the inclined strut 41, the free ends of the inclined struts 41 of two adjacent scissor type connecting rod assemblies are connected, and a connecting piece 45 is arranged in the middle of the push rod 44;
the second adjusting threaded shaft 43 is connected with the push rod 44 through a connecting piece 45, and external threads are arranged on the second adjusting threaded shaft 43 to be matched with the threaded seat 13 arranged on the working platform 1, namely, the push rod 44 is driven to move in the horizontal direction by rotating the second adjusting threaded shaft 43 when the device is used, so that the free end of the push rod 44 is rotated, and the height of the first mounting plate 51 is adjusted.
Preferably, for easy installation, the scissors-type link assembly comprises 2 inclined supporting rods 41 with the same structure, wherein one end hinged end of one inclined supporting rod 41 is connected with a hinged seat 12 arranged on the working platform 1, the other end free end is connected with a clamping groove piece arranged at the bottom of the first mounting plate 51, one end hinged end of the other inclined supporting rod 41 is connected with a hinged seat arranged at the bottom of the first mounting plate 51, the other end free end is connected with a clamping groove piece 11 arranged on the working platform 1, and a lateral limiting groove 111 is further arranged on the clamping groove piece 11 and matched with a push rod 44 for use, namely, when the scissors-type link assembly is used, the end part of the push rod 44 sequentially penetrates through the free end part of the inclined supporting rod 41 and the lateral limiting groove 111, and horizontally moves along the lateral limiting groove 111 under the adjusting action of the second adjusting threaded shaft 43.
The use process and the use principle of the device for measuring the electromagnetic backscatter coefficient of the material in the embodiment comprise:
first, the material 6 to be measured is fixedly installed between the two clamping members 72 by rotating the first regulating hand shaft 73; then, according to the alignment requirement, sequentially adjusting the height of the material to be measured fixing mechanism 5, the radial position of the second mounting plate 52 and the horizontal position of the third mounting plate 53 so that the material to be measured 6 can be aligned with the directional antenna 2 and the focusing lens antenna 3; finally, the directional antenna 2 and the focusing lens antenna 3 are opened, and the electromagnetic backscatter parameters are analyzed by software of the vector network analyzer 8 to obtain the backscatter coefficient of the material.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a be used for material electromagnetism anti-scattering coefficient measuring device, includes work platform to and directional antenna, focusing lens antenna and the vector network analyzer of setting on work platform, directional antenna and focusing lens antenna coaxial arrangement, and directional antenna is connected with the electromagnetic wave access port of vector network analyzer, and focusing lens antenna is connected with the electromagnetic wave transmitting end of vector network analyzer, its characterized in that: the device comprises a working platform, and is characterized by further comprising a material fixing mechanism to be measured, wherein the material fixing mechanism to be measured is arranged on the working platform through a height adjusting assembly, and a clamping fixing assembly is arranged on the material fixing mechanism to be measured and is matched with the material to be measured.
2. An electromagnetic backscatter coefficient measurement apparatus for materials according to claim 1, wherein: the material fixing mechanism to be tested comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate,
the first mounting plate is arranged on the working platform through the height adjusting assembly, and a first radial adjusting guide rail is arranged on the first mounting plate;
the second mounting plate is mounted on the first mounting plate, and a first guide groove is formed in the lower side of the second mounting plate and matched with the first radial adjusting guide rail for use;
the fourth mounting plate is arranged on the second mounting plate, a second guide groove is formed in the fourth mounting plate and is matched with a second horizontal adjusting guide rail arranged on the second mounting plate, and a connecting column is further arranged on the fourth mounting plate;
the third mounting plate is arranged on the fourth mounting plate through the connecting column, and the clamping and fixing assembly is arranged on the third mounting plate and is matched with the material to be tested.
3. An electromagnetic backscatter coefficient measurement apparatus for materials according to claim 2, wherein: the second mounting plate and the fourth mounting plate are respectively provided with a positioning hole, the positioning holes are matched with the positioning piece for use, and the positioning piece is matched with the first radial adjusting guide rail and the second horizontal adjusting guide rail for use.
4. An electromagnetic backscatter coefficient measurement apparatus for materials according to claim 2, wherein: the center department of third mounting panel still be provided with the mounting hole, be provided with the bearing in the mounting hole, the bearing uses with the spliced pole cooperation, and still be provided with the motor on the third mounting panel, the driving end of motor is provided with the gear, the gear uses with the ring gear cooperation that sets up on the third mounting panel.
5. An electromagnetic backscatter coefficient measurement apparatus for materials according to claim 2, wherein: the clamping and fixing assembly is arranged on the upper side of the third mounting plate and comprises a bidirectional screw rod, a clamping piece and a first adjusting hand shaft,
the bidirectional screw rod is arranged on the third mounting plate through a screw rod mounting seat;
the clamping pieces are symmetrically arranged on the bidirectional screw rod and are matched with the material to be tested for use;
the first adjusting hand shaft is arranged at one end of the bidirectional screw rod and is fixedly connected with the bidirectional screw rod.
6. An electromagnetic backscatter coefficient measurement apparatus for materials according to claim 2, wherein: the height adjusting component comprises an inclined stay bar, a connecting rod, a second adjusting threaded shaft and a push rod,
the diagonal braces are arranged in pairs to form a pair of scissors-type connecting rod assemblies which are symmetrically arranged;
the connecting rods are arranged between two groups of scissor-type connecting rod assemblies which are symmetrically arranged;
the push rod is arranged at the bottom of the free end of the inclined stay rod, the free ends of the inclined stay rods of two adjacent groups of scissor-type connecting rod assemblies are connected, and a connecting piece is arranged on the push rod;
the second adjusting threaded shaft is connected with the push rod through a connecting piece, and external threads are arranged on the second adjusting threaded shaft to be matched with a threaded seat arranged on the working platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222974144.XU CN219201375U (en) | 2022-11-08 | 2022-11-08 | Electromagnetic backscattering coefficient measuring device for materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222974144.XU CN219201375U (en) | 2022-11-08 | 2022-11-08 | Electromagnetic backscattering coefficient measuring device for materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219201375U true CN219201375U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222974144.XU Active CN219201375U (en) | 2022-11-08 | 2022-11-08 | Electromagnetic backscattering coefficient measuring device for materials |
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| Country | Link |
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| CN (1) | CN219201375U (en) |
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- 2022-11-08 CN CN202222974144.XU patent/CN219201375U/en active Active
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