Antenna frame for carrying out field voltage standing wave ratio measurement

Abstract

The utility model belongs to the technical field of metering calibration, and particularly relates to an antenna frame for carrying out field voltage standing wave ratio measurement, which comprises a base, a sliding assembly and a controller are arranged on the base, a stand column is detachably connected onto the sliding assembly and moves on the base through the sliding assembly, and the controller is connected with the stand column. A second connecting piece and a transverse rod are arranged at the end, away from the sliding assembly, of the stand column, the transverse rod is perpendicular to the stand column and detachably connected with the stand column through the second connecting piece, an antenna fixing device is fixedly installed at one end of the transverse rod, an antenna is fixed to the transverse rod through the antenna fixing device, and the controller is electrically connected with the sliding assembly. The device is easy to operate, can automatically adjust the position of an antenna measuring point, and improves the detection accuracy and efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement and calibration, in particular to an antenna stand for measuring a voltage standing wave ratio of a site. Background Art

[0002] The principle of the site voltage standing wave ratio is based on the interference phenomenon of electromagnetic waves. It is a space standing wave formed by the superposition of the direct signal emitted by the transmitting antenna and the signal reflected back in the anechoic chamber. Ideally, electromagnetic waves propagate without reflection in free space, but due to the different materials of absorbing materials and other influencing conditions, the anechoic chamber cannot be a completely reflection-free free space. According to the definition in GB / T 6113.104-2021, the standard method of antenna transmission and antenna reception is usually used to measure the site voltage standing wave ratio.

[0003] When the metrology calibration personnel carry out the calibration of the VSWR of the site, they need to determine the circular test quiet area of ​​the site, select 24 test positions in the area, determine the front (F), middle (C), left (L), and right (R) test positions on the circular surface, and determine 6 test points at each position. The test process uses a pair of omnidirectional dipole antennas (including transmitting and receiving functions). The receiving antenna is fixed at the reference point and always points to the center of the quiet area along the axis; the transmitting antenna needs to be placed at the 24 test points in the quiet area in turn, pointing to the receiving antenna. When the height of the two test antennas is h1 = 1m, record one set of data, and when h2 = 2m, record one set of data.

[0004] At present, in the daily measurement and calibration work of site voltage standing wave ratio, calibration personnel usually need to obtain level data by constantly moving the measurement position of the transmitting antenna. This repeated arrangement of the transmitting antenna is cumbersome and has a high degree of work repetition, which seriously reduces work efficiency. In addition, the artificial measurement distance inevitably leads to measurement errors, which affects the calibration accuracy and is not conducive to the calibration work. Utility Model Content

[0005] The utility model aims to provide an antenna stand for measuring voltage standing wave ratio on site, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides an antenna stand for measuring the voltage standing wave ratio of a site, comprising a base, a sliding assembly and a controller are arranged on the base, a column is detachably connected to the sliding assembly, the column moves on the base through the sliding assembly, a connecting piece 2 and a cross bar are arranged at one end of the column away from the sliding assembly, the cross bar is arranged perpendicular to the column, the cross bar is detachably connected to the column through the connecting piece 2, an antenna holder is fixedly installed on one end of the cross bar, the antenna is fixed to the cross bar through the antenna holder, and the controller is electrically connected to the sliding assembly.

[0007] Preferably, the base includes two support plates, the two support plates are arranged in parallel, a connecting rod and a connecting plate are fixedly connected between the two support plates, the connecting rod and the connecting plate are respectively located at two ends of the support plates, the bottom end of the connecting plate is flush with the bottom end of the support plate, the sliding assembly is arranged on the connecting plate, and the controller is fixedly installed on a side of the support plate away from the sliding assembly.

[0008] Preferably, the sliding assembly includes a screw rod rotatably connected between the two support plates, a slider is threadedly connected to the screw rod, a motor is fixedly mounted on the support plate, the output end of the motor is fixedly connected to the screw rod, the slider is slidably connected to the connecting plate, the column is detachably connected to the top end of the slider, the column and the slider are vertically arranged, and the controller is electrically connected to the motor.

[0009] Preferably, a guide rail is fixedly mounted on the connecting plate, and the sliding block is slidably connected to the guide rail.

[0010] Preferably, opposite sides of the two support plates are provided with slots, and both ends of the guide rail are slidably fitted in the slots respectively. The guide rail is provided with screw holes, and the guide rail is fixedly mounted on the connecting plate by screws.

[0011] Preferably, the column includes a plurality of support rods and a plurality of connecting members 1, the plurality of support rods are connected in series head to tail through the plurality of connecting members, the bottom end of the support rod located at the bottom is detachably connected to the slider, and the top end of the support rod located at the top is detachably connected to the cross bar through the connecting member 2.

[0012] Preferably, the first connector is a straight-through connector, and the second connector is an L-shaped connector.

[0013] Compared with the prior art, the utility model has the following advantages and technical effects:

[0014] The utility model provides an antenna stand for measuring voltage standing wave ratio at a development site, and a controller is provided to control the position of a sliding component moving on a base;

[0015] The antenna can be supported and fixed by the provided columns, and the provided sliding components can drive the columns and the antenna to move on the base; the provided base can ensure the stability of the columns and the antenna;

[0016] The utility model is easy to operate and can automatically adjust the position of the antenna measuring point to improve the accuracy and efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of an antenna stand for measuring voltage standing wave ratio on site proposed by the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0020] Among them: 1. support plate; 2. guide rail; 3. slider; 4. connecting rod; 5. support rod; 6. controller; 7. connecting piece 1; 8. connecting piece 2; 9. antenna holder; 10. motor; 11. screw rod; 12. cross bar; 13. connecting plate. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments can be combined with each other. The described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Reference Figure 1-Figure 2The utility model provides an antenna stand for measuring the voltage standing wave ratio of a site, including a base, a sliding assembly and a controller 6 are arranged on the base, a column is detachably connected to the sliding assembly, the column moves on the base through the sliding assembly, a connector 8 and a cross bar 12 are arranged at one end of the column away from the sliding assembly, the cross bar 12 is a round tube with a length of 0.3 meters, the cross bar 12 is vertically arranged to the column, the cross bar 12 is detachably connected to the column through the connecting piece 8, an antenna holder 9 is fixedly installed at one end of the cross bar 12, the antenna is fixed to the cross bar 12 through the antenna holder 9, and the controller 6 is electrically connected to the sliding assembly.

[0023] The position of the sliding assembly on the base can be controlled by the controller 6;

[0024] The antenna can be supported and fixed by the provided columns, and the provided sliding components can drive the columns and the antenna to move on the base; the provided base can ensure the stability of the columns and the antenna;

[0025] The utility model is easy to operate and can automatically adjust the position of the antenna measuring point to improve the accuracy and efficiency of detection.

[0026] Furthermore, the base includes two support plates 1, which are arranged in parallel. A connecting rod 4 and a connecting plate 13 are fixedly connected between the two support plates 1. The connecting rod 4 and the connecting plate 13 are respectively located at two ends of the support plates 1 to form a stable rectangular frame. The bottom end of the connecting plate 13 is flush with the bottom end of the support plate 1 to improve the stability of contact with the ground. The sliding component is arranged on the connecting plate 13, and the controller 6 is fixedly installed on the side of the support plate 1 away from the sliding component.

[0027] Furthermore, the sliding assembly includes a screw rod 11 rotatably connected between two support plates 1, a slider 3 is threadedly connected to the screw rod 11, a motor 10 is fixedly mounted on the support plate 1, an output end of the motor 10 is fixedly connected to the screw rod 11, the slider 3 is slidably connected to the connecting plate 13, a column is detachably connected to the top of the slider 3, the column and the slider 3 are vertically arranged, and the controller 6 is electrically connected to the motor 10.

[0028] The motor 10 is set to drive the screw rod 11 to rotate, and the screw rod 11 drives the slider 3 to slide on the connecting plate 13. The controller 6 is set to control the direction and number of rotations of the motor 10 according to the requirements of the test distance to control the distance moved by the slider 3 on the connecting plate 13. It should be noted that the controller 6 has a built-in battery to provide power for the motor 10. For every 5 rotations of the screw rod 11, the slider 3 can move 2 cm, thereby achieving precise control of the detection position of the antenna.

[0029] Furthermore, in order to make the sliding block 3 slide more stably on the connecting plate 13 , a guide rail 2 is fixedly mounted on the connecting plate 13 , and the sliding block 3 is slidably connected to the guide rail 2 .

[0030] Furthermore, in order to facilitate installation, the two support plates 1 are provided with slots on opposite sides, and the two ends of the guide rail 2 are respectively slidably fitted in the slots. The guide rail 2 is provided with screw holes, and the guide rail 2 is fixedly mounted on the connecting plate 13 by screws.

[0031] Furthermore, the column includes a plurality of support rods 5 and a plurality of connecting members 7. The support rod 5 is a round tube with a length of 1 meter. Support rods 5 of different lengths can also be selected for assembly as needed. The plurality of support rods 5 are connected end to end through a plurality of connecting members 7. The bottom end of the support rod 5 located at the bottom is detachably connected to the slider 3, and the top end of the support rod 5 located at the top is detachably connected to the cross bar 12 through a connecting member 8.

[0032] Furthermore, in order to facilitate assembly and connection, connector 1 7 is a straight-through connector and connector 2 8 is an L-shaped connector.

[0033] The utility model provides an antenna stand for measuring the voltage standing wave ratio of a conducting field, and its working principle is as follows: when in use, support rods 5 of different lengths are selected according to different heights of the antenna fixing, and are connected and combined through a straight-through connector to form a column, the bottom end of the column is connected to the top end of the slider 3 through a connector, and the top end of the column is fixedly connected to the cross bar 12 through an L-shaped connector, and the antenna is fixed to the cross bar 12 through an antenna holder 9, and the controller 6 is started. The controller 6 controls the motor 10 to rotate, and the motor 10 drives the screw rod 11 to rotate, and the screw rod 11 drives the slider 3 to slide on the connecting plate 13. According to the requirements of the test distance, the controller 6 controls the direction and number of rotations of the motor 10 to control the distance moved by the slider 3 on the connecting plate 13. When the slider 3 moves to a predetermined point, the motor 10 stops rotating to complete the detection of the point, and the detection of all points is repeated in this way.

[0034] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An antenna stand for measuring voltage standing wave ratio at a site, characterized in that: The invention comprises a base, on which a sliding assembly and a controller (6) are arranged, the sliding assembly is detachably connected to a column, the column moves on the base through the sliding assembly, a second connector (8) and a cross bar (12) are arranged at one end of the column away from the sliding assembly, the cross bar (12) is arranged perpendicular to the column, the cross bar (12) is detachably connected to the column through the second connector (8), an antenna holder (9) is fixedly installed at one end of the cross bar (12), the antenna is fixed to the cross bar (12) through the antenna holder (9), and the controller (6) is electrically connected to the sliding assembly.

2. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 1, characterized in that: The base comprises two support plates (1), the two support plates (1) are arranged in parallel, a connecting rod (4) and a connecting plate (13) are fixedly connected between the two support plates (1), the connecting rod (4) and the connecting plate (13) are respectively located at two ends of the support plate (1), the bottom end of the connecting plate (13) is flush with the bottom end of the support plate (1), the sliding component is arranged on the connecting plate (13), and the controller (6) is fixedly mounted on a side of the support plate (1) away from the sliding component.

3. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 2, characterized in that: The sliding assembly comprises a screw rod (11) rotatably connected between the two support plates (1), a slider (3) is threadedly connected to the screw rod (11), a motor (10) is fixedly mounted on the support plate (1), an output end of the motor (10) is fixedly connected to the screw rod (11), the slider (3) is slidably connected to the connecting plate (13), the column is detachably connected to the top end of the slider (3), the column and the slider (3) are vertically arranged, and the controller (6) is electrically connected to the motor (10).

4. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 3, characterized in that: A guide rail (2) is fixedly mounted on the connecting plate (13), and the sliding block (3) is slidably connected to the guide rail (2).

5. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 4, characterized in that: The two support plates (1) are provided with slots on opposite sides, and the two ends of the guide rail (2) are respectively slidably fitted in the slots. The guide rail (2) is provided with screw holes, and the guide rail (2) is fixedly mounted on the connecting plate (13) by means of screws.

6. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 3, characterized in that: The upright column comprises a plurality of support rods (5) and a plurality of connecting members (7); the plurality of support rods (5) are connected end to end via the plurality of connecting members (7); the bottom end of the support rod (5) located at the bottom is detachably connected to the slider (3); and the top end of the support rod (5) located at the top is detachably connected to the cross bar (12) via the connecting member (8).

7. The antenna stand for measuring voltage standing wave ratio at a development site according to claim 6, characterized in that: The first connector (7) is a straight-through connector, and the second connector (8) is an L-shaped connector.

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