CN107221758B - Detection device for antenna feed source position, antenna and feed source position correction method - Google Patents
Detection device for antenna feed source position, antenna and feed source position correction method Download PDFInfo
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- CN107221758B CN107221758B CN201710564958.7A CN201710564958A CN107221758B CN 107221758 B CN107221758 B CN 107221758B CN 201710564958 A CN201710564958 A CN 201710564958A CN 107221758 B CN107221758 B CN 107221758B
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005489 elastic deformation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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- General Physics & Mathematics (AREA)
- Eye Examination Apparatus (AREA)
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Abstract
The invention discloses a detection device for the feed source position of an antenna, an antenna and a feed source position correction method, wherein the detection device comprises a bracket, at least two reflectors and at least two parallel projection light sources arranged on the bracket, and each parallel projection light source is matched with one reflector; all the parallel projection light sources project towards the parabolic reflecting surface along the axis direction parallel to the parabolic reflecting surface of the antenna, a projection position is formed on the parabolic reflecting surface, and the reflecting mirror is positioned at the projection position of the matched parallel projection light sources on the parabolic reflecting surface; the light rays projected by all the parallel projection light sources are reflected by the reflecting mirror to form a light ray convergence point, wherein the light ray convergence point is a focus of the parabolic reflecting surface, and the focus of the parabolic reflecting surface is the optimal position of the antenna feed source position. The invention realizes focus detection of the antenna through the detection device, namely the optimal position of the antenna feed source, so as to adjust the current feed source position and improve the signal receiving effect of the antenna.
Description
Technical Field
The invention belongs to the field of antenna equipment, and particularly relates to a detection device for an antenna feed source position, an antenna and a feed source position correction method.
Background
The reflection surface receiving antenna is a common satellite receiving antenna, and the principle is that weak satellite signals are converged to a feed source through a reflection surface, and induced electric signals are generated in the feed source so as to realize data receiving. In order to achieve the best receiving effect of the satellite receiving antenna, the feed source of the antenna is required to be arranged at the focus of the reflecting surface of the antenna. Although the focal position of the reflecting surface of the antenna can be precisely calculated by a mathematical method in the antenna design process, errors exist in the actual manufacturing process of the antenna; during the transportation and installation of the antenna, the components are easy to deform. The accumulated errors in all links cause larger deviation between the actual position of the feed source of the finally installed antenna and the theoretical position of the focus of the reflecting surface, so that the receiving effect of the antenna is seriously reduced, however, the optimal position of the feed source of the installed satellite receiving antenna is lack of a scientific detection device and method.
Disclosure of Invention
The invention provides a detection device for the feed source position of an antenna, the antenna and a feed source position correction method, which can realize focus detection on a parabolic reflecting surface of an installed satellite receiving antenna, further obtain the optimal position of the feed source position of the antenna, so that a user can adjust the current feed source position, and the signal receiving effect of the antenna is improved.
In one aspect, the present invention provides a detection apparatus for an antenna feed source position, including: the device comprises a bracket, at least two reflectors and at least two parallel projection light sources arranged on the bracket, wherein each parallel projection light source is matched with one reflector;
all the parallel projection light sources project towards the parabolic reflecting surface along the axis direction parallel to the parabolic reflecting surface of the antenna, a projection position is formed on the parabolic reflecting surface, and the reflecting mirror is positioned at the projection position of the matched parallel projection light sources on the parabolic reflecting surface;
the light rays projected by all the parallel projection light sources are reflected by the reflecting mirror to form a light ray convergence point, wherein the light ray convergence point is a focus of the parabolic reflecting surface, and the focus of the parabolic reflecting surface is the optimal position of the antenna feed source position.
Preferably, the support is a telescopic structure with adjustable size.
The size of the support can be adjusted so that the detection device is suitable for various installed antennas with different sizes.
Preferably, the support comprises a vertical rod and a cross rod, the vertical rod is arranged on the axis of the parabolic reflecting surface, the cross rod is connected to one end of the vertical rod, which is far away from the parabolic reflecting surface, the parallel projection light source is fixed on the cross rod, and the vertical rod and the cross rod are telescopic rods or threaded rods with adjustable lengths.
Preferably, the parallel projection light source is a laser pen, the laser pen is fixed on the cross rod, and the pen body of the laser pen is parallel to the vertical rod.
The laser-based high-concentration-degree positioning device has good positioning effect, can improve the detection accuracy by adopting laser as a parallel projection light source, meanwhile, the pen body of the laser pen is kept parallel to the vertical rod, so that the axis of the laser is further parallel to the axis of the parabolic reflecting surface.
Preferably, 4 laser pens are adopted, the support comprises two cross bars, the 4 laser pens are respectively arranged at two ends of the two cross bars, the 4 laser pens are distributed around the vertical bars in a central symmetry mode, and every two laser pens are distributed at 90 degrees around the vertical bars.
The detection device is provided with 4 laser pens, so that the convergence condition of laser reflected from 4 different directions can be detected, and the accuracy of focus detection is improved.
Preferably, the bottom end of the vertical rod is provided with a sucker, and the sucker is adsorbed at the center of the bottom of the parabolic reflecting surface to fix the vertical rod on the axis of the parabolic reflecting surface.
Preferably, the ends of the cross bar are provided with corners.
The provision of corners prevents the detection means from interfering with the reflected laser light.
In another aspect, the present invention also provides an antenna, including: feed source stay bar and detection device; one end of the feed source stay bar is positioned at the feed source position of the antenna.
Preferably, the feed source stay bar comprises a first rod, a second rod and a screw rod positioned between the first rod and the second rod, and the screw rod is connected with the first rod through a first threaded tubular interface; the screw is connected to the second rod through a second threaded tubular interface.
On the other hand, the invention also provides a method for correcting the feed source position of the antenna, the antenna comprises a detection device and a feed source supporting rod, the detection device comprises a bracket, at least two reflecting mirrors and at least two laser pens arranged on the bracket, each laser pen is matched with one reflecting mirror, the bracket comprises a vertical rod and a horizontal rod, the lengths of the vertical rod and the horizontal rod can be adjusted, and the correction method comprises the following steps:
step 1: fixing the detection device on the parabolic reflecting surface of the antenna, and enabling the vertical rod to be positioned on the axis of the parabolic reflecting surface of the antenna;
step 2: the lengths of the vertical rod and the transverse rod are adjusted;
step 3: the laser pen is arranged on the cross rod, so that the laser pen is parallel to the vertical rod, and all the laser pens are opened to ensure that the laser beam is parallel to the vertical rod and projected towards the parabolic reflecting surface;
step 4: attaching a reflector to a projection position formed on a parabolic reflecting surface by laser of the matched laser pen;
step 5: detecting a light converging point of the reflected laser, wherein the light converging point is a focus of a parabolic reflecting surface;
step 6: and adjusting the feed source stay bar to enable the feed source position to be located at the light converging point.
The correction method can realize the precision adjustment of the feed source stay bar.
The beneficial effects are that:
the invention provides a detection device for the position of an antenna feed source, which is characterized in that at least two parallel projection light sources are arranged, and the parallel projection light sources are projected towards a reflecting surface in a mode of being parallel to the axial direction of a parabolic reflecting surface of an antenna, so that the focus of the reflecting surface of the antenna is obtained, and a user can adjust the position of the antenna feed source to the focus of the reflecting surface of the antenna by adjusting a feed source stay bar, thereby improving the receiving performance of antenna signals.
The invention also provides a method for correcting the feed source position of the antenna, which can directly detect the focal position of the parabolic reflecting surface of the antenna by the detection device, so that the optimal position of the feed source position, namely the focal position of the parabolic reflecting surface, can be detected without disassembling the antenna when correcting the feed source position, and the current feed source position can be adjusted to the optimal feed source position by adjusting the feed source stay bar without greatly adjusting the antenna structure.
Drawings
Fig. 1 is a schematic diagram of an antenna structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a detection device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a feed source stay bar according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of an antenna feed source position correction method according to an embodiment of the present invention.
Wherein reference numerals are described as follows:
1 detection device, 2 feed source vaulting pole, 3 parabolic reflecting surface, 5 light converging point, 11 support, 12 speculum, 13 laser pen, 111 montant, 112 horizontal pole, 14 sucking discs, 21 first pole, 22 second pole, 23 screw rods, 24 first screw thread tubular interface, 25 second screw thread tubular interface.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Referring to fig. 1, an antenna provided by an embodiment of the present invention includes a detecting device 1 for an antenna feed source position, a feed source stay bar 2, and a parabolic reflecting surface 3. One end of the feed source supporting rod 2 is fixed at the position of the antenna feed source.
Referring to fig. 1 and 2, the detection device 1 includes a bracket 11, at least two reflecting mirrors 12, and at least two parallel projection light sources provided on the bracket 11.
Wherein each parallel projection light source is matched with a reflector 12, all the parallel projection light sources project towards the parabolic reflecting surface 3 along the axis direction parallel to the parabolic reflecting surface 3, and a projection position is formed on the parabolic reflecting surface 3, and the reflector 12 is positioned at the projection position of the matched parallel projection light sources on the parabolic reflecting surface 3.
The dimensions of the mirror 12 are preferably 1cm by 1cm so that light from the parallel projection light source can be reflected on the mirror 12. The parabolic reflecting surface 3 based on the antenna has a microwave reflecting function, but does not have a light reflecting function, and the reflector 12 is arranged to effectively realize the light reflection of the parallel projection light source.
All the light rays projected by the parallel projection light sources are reflected by the reflecting mirror 12 and form a light ray converging point 5, the light ray converging point 5 is the focus of the parabolic reflecting surface 3, and the focus of the parabolic reflecting surface 3 is the optimal position of the antenna feed source position.
After the optimal position is obtained, a user can adjust the feed source stay bar 2 to adjust the feed source position of the antenna to the focus of the parabolic reflecting surface 3, so that the signal receiving performance of the antenna is improved.
Based on the characteristics of high concentration degree and good positioning effect of laser, the parallel projection light source is preferably a laser source, so that the accuracy of a detection result can be improved, and the laser source is preferably a laser pen 13.
With continued reference to fig. 1 and 2, in this embodiment, the support 11 is preferably a telescopic structure with adjustable dimensions, specifically, the support 11 includes a vertical rod 111 and a cross rod 112, the vertical rod 111 is disposed on the axis of the parabolic reflecting surface 3, the cross rod 112 is connected to one end of the vertical rod 111 far away from the parabolic reflecting surface 3, the cross rod 112 is orthogonal to the vertical rod 111, and the parallel projection light source is fixed on the cross rod 112, where the vertical rod 111 and the cross rod 112 are telescopic rods or threaded rods with adjustable lengths. When the parallel projection light source is the laser pen 13, the laser pen 13 is fixed at the end of the cross bar 112, and the pen body of the laser pen 13 is parallel to the vertical bar 111 to ensure that the laser beam of the laser pen 13 is parallel to the vertical bar 111, so as to ensure that the laser beam is parallel to the axis of the parabolic reflecting surface 3.
In other possible embodiments, the support may be of other types of telescopic construction, for example comprising a vertical rod with adjustable length and a retractable roller shutter formed by a number of short rods interlaced.
Referring to fig. 2, the preferred bracket 11 includes two cross bars 112, the two cross bars 112 are fixed on the vertical bar 111 in a staggered manner, the parallel projection light source is the laser pen 13, and 4 laser pens 13 are respectively arranged at two ends of the two cross bars 112, the 4 laser pens 13 are distributed around the vertical bar 111 in a central symmetry manner, and the two laser pens 13 are distributed in a 90-degree manner around the vertical bar 111.
It should be understood that, by arranging 4 laser pens 13, the convergence of the laser light reflected from 4 different directions can be detected, thereby improving the accuracy of focus detection. In other possible embodiments, more than 4 laser pens 13 may be provided, which is not particularly limited by the present invention.
Referring to fig. 2, it is preferable that the end of the cross bar 112 is provided with a corner, and the corner is arranged so that the reflected light reflected by the reflecting mirror 12 does not pass through the cross bar 112, thereby preventing the cross bar 112 from interfering with the reflected light to affect the accuracy of the detection result.
For example, when the frame 11 is configured as shown in fig. 2, it is preferable that each corner has the same deflection direction as compared to the cross bar and the same size.
Referring to fig. 2, the preferred detection device 1 further includes a suction cup 14 disposed at the bottom end of the vertical rod 111, where the suction cup 14 is attached to the bottom center of the parabolic reflecting surface 3 to fix the vertical rod 111 on the axis of the parabolic reflecting surface 3.
In other possible embodiments, the vertical rod 111 may be fixed on the axis of the parabolic reflecting surface 3 by using other detachable fixing methods, such as a threaded connection, a snap connection, etc.
Referring to fig. 3, a structure of a feed source stay bar is provided in an embodiment of the invention. As shown, the feed spacer 2 comprises a first rod 21, a second rod 22 and a screw 23 located between the first rod 21 and the second rod 22, the screw 23 being connected to the first rod 21 by a first threaded tubular interface 24; the screw 23 is connected to the second rod 22 by a second threaded tubular interface 25.
Specifically, the length of the feed spacer 2 is adjusted by adjusting the screw 23. One end of the feed source supporting rod 2 is used for supporting a feed source, the other end of the feed source supporting rod is fixed on the parabolic reflecting surface 3 of the antenna, and preferably, the angle between the feed source supporting rod 2 and the parabolic reflecting surface 3 is adjustable.
In other possible embodiments, the feed stay 2 is made of an elastically deformable material, and a user can directly correct the feed position of the antenna feed to the focus of the parabolic reflecting surface 3 by pulling the feed stay 2.
It should be noted that, in this embodiment, the preferred antenna includes at least two feed spacers, one ends of the two feed spacers intersect and are located in the antenna feed, and the preferred detection device is located below the feed spacers, that is, between the feed spacers and the parabolic reflecting surface.
The detection device provided by the invention can be used as independent equipment for detecting the optimal positions of the feeds of antennas with various sizes, and can also be used as a part of the antenna for detecting the optimal positions of the feeds of the antennas.
Referring to fig. 4, based on the above antenna and the detection device in the antenna, the present invention provides an antenna feed source position correction method, where the correction method is as follows:
step 1: the detection device is fixed on the parabolic reflecting surface of the antenna, so that the vertical rod is positioned on the axis of the parabolic reflecting surface of the antenna.
Specifically, if the vertical rod is fixed by adopting the suction cup structure, the vertical rod is fixed on the axis of the parabolic reflecting surface by sucking the bottom center of the parabolic reflecting surface through the suction cup.
Step 2: and adjusting the lengths of the vertical rod and the transverse rod.
Adjusting the length of the vertical and horizontal rods can provide more operating space for a user to install or detach the detection device.
Step 3: and the laser pen is arranged on the cross rod, so that the laser pen is parallel to the vertical rod, and all the laser pens are opened, so that the laser beam is ensured to be parallel to the vertical rod and projected towards the parabolic reflecting surface.
In particular, it is preferable to mount the laser pointer at the end of the cross bar, for example by a clip.
Step 4: the reflector is attached to the projection position formed on the parabolic reflecting surface by the laser of the matched laser pen.
Step 5: detecting a light converging point of the reflected laser, wherein the light converging point is a focus of a parabolic reflecting surface;
step 6: and adjusting the feed source stay bar to enable the feed source position to be located at the light converging point.
Specifically, if the feed source stay bar is in a screw connection structure as shown in fig. 3, the screw is adjusted to realize the adjustment of the length of the feed source stay bar, so that the feed source position is adjusted to the light convergence point; if the feed source stay bar adopts an elastic deformable material, the feed source stay bar can be broken off to deform, so that the feed source position is adjusted to a light converging point.
The foregoing description of the preferred embodiment of the invention is merely illustrative of the invention and is not intended to be limiting. Those skilled in the art will appreciate that many modifications may be made thereto which fall within the scope of the invention as defined by the appended claims.
Claims (7)
1. The detection device for the antenna feed source position is characterized by comprising a bracket, at least two reflectors and at least two parallel projection light sources arranged on the bracket, wherein each parallel projection light source is matched with one reflector;
all the parallel projection light sources are projected towards the parabolic reflecting surface along the axial direction parallel to the parabolic reflecting surface of the antenna, a projection position is formed on the parabolic reflecting surface, and the reflecting mirror is positioned at the projection position of the matched parallel projection light sources on the parabolic reflecting surface;
all the light rays projected by the parallel projection light sources are reflected by the reflecting mirror and form a light ray convergence point, wherein the light ray convergence point is a focus of the parabolic reflecting surface, so that focus detection is carried out on the parabolic reflecting surface of the installed satellite receiving antenna, and the focus of the parabolic reflecting surface is the optimal position of the antenna feed source position;
the support comprises a vertical rod and a cross rod, the vertical rod is arranged on the axis of the parabolic reflecting surface, the cross rod is connected to one end, far away from the parabolic reflecting surface, of the vertical rod, and the parallel projection light source is fixed on the cross rod;
the vertical rods and the transverse rods are telescopic rods or threaded rods with adjustable lengths;
the antenna feed source comprises an antenna feed source body, a feed source support rod and a feed source support rod, wherein one end of the feed source support rod is positioned at the antenna feed source position, and the other end of the feed source support rod is fixed on a parabolic reflecting surface of the antenna;
the feed source stay bar comprises a first rod, a second rod and a screw rod positioned between the first rod and the second rod, and the screw rod is connected with the first rod through a first threaded tubular interface; the screw is connected with the second rod through a second threaded tubular interface; the length of the feed source stay bar is adjusted by adjusting the screw rod;
or the feed source supporting rod is made of elastic deformation materials, and a user directly corrects the feed source position of the antenna feed source to the focus of the parabolic reflecting surface by breaking the feed source supporting rod.
2. The detection device according to claim 1, wherein the parallel projection light source is a laser pen;
the laser pen is fixed on the cross rod, and the pen body of the laser pen is parallel to the vertical rod.
3. The detecting device according to claim 2, wherein 4 laser pens are adopted, the support comprises two cross bars, the 4 laser pens are respectively arranged at two ends of the two cross bars, the 4 laser pens are distributed around the vertical bars in a central symmetry mode, and every two laser pens are distributed at 90 degrees around the vertical bars.
4. The detecting device according to claim 1, wherein a suction cup is provided at the bottom end of the vertical rod, and the suction cup is attached to the bottom center of the parabolic reflecting surface to fix the vertical rod on the axis of the parabolic reflecting surface.
5. The detection device of claim 1, wherein the end of the cross bar is provided with a corner.
6. An antenna, characterized in that it comprises a detection device according to any of the preceding claims 1-5.
7. The antenna feed source position correction method is characterized in that the antenna comprises a detection device and a feed source supporting rod, the detection device comprises a support, at least two reflecting mirrors and at least two laser pens arranged on the support, each laser pen is matched with one reflecting mirror, the support comprises a vertical rod and a transverse rod, the lengths of the vertical rod and the transverse rod are adjustable, and the correction method comprises the following steps:
step 1: fixing the detection device on the parabolic reflecting surface of the antenna, and enabling the vertical rod to be positioned on the axis of the parabolic reflecting surface of the antenna;
step 2: the lengths of the vertical rod and the transverse rod are adjusted;
step 3: the laser pen is arranged on the cross rod, so that the laser pen is parallel to the vertical rod, and all the laser pens are opened to ensure that the laser beam is parallel to the vertical rod and projected towards the parabolic reflecting surface;
step 4: attaching a reflector to a projection position formed on a parabolic reflecting surface by laser of the matched laser pen;
step 5: detecting a light converging point of the reflected laser, wherein the light converging point is a focus of the parabolic reflecting surface, and focus detection is carried out on the parabolic reflecting surface of the installed satellite receiving antenna;
step 6: and adjusting the feed source stay bar to enable the feed source position to be located at the light converging point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710564958.7A CN107221758B (en) | 2017-07-12 | 2017-07-12 | Detection device for antenna feed source position, antenna and feed source position correction method |
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| CN201710564958.7A CN107221758B (en) | 2017-07-12 | 2017-07-12 | Detection device for antenna feed source position, antenna and feed source position correction method |
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| CN107221758A CN107221758A (en) | 2017-09-29 |
| CN107221758B true CN107221758B (en) | 2024-03-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107978846B (en) * | 2017-11-21 | 2020-01-21 | 锐捷网络股份有限公司 | Antenna, microwave network bridge and antenna alignment method |
| CN108877393A (en) * | 2018-07-05 | 2018-11-23 | 中国人民解放军空军预警学院雷达士官学校 | A kind of radar directional diagram measuring method based on parabola antenna |
| JP6836565B2 (en) * | 2018-10-12 | 2021-03-03 | アンリツ株式会社 | Antenna device and measurement method |
| CN111355541A (en) * | 2020-04-02 | 2020-06-30 | Oppo广东移动通信有限公司 | Network device and method for searching network signal |
| CN113160673B (en) * | 2021-05-06 | 2022-01-21 | 华北电力大学 | Electromagnetic field and electromagnetic wave experimental device and experimental method |
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| CN107221758A (en) | 2017-09-29 |
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