Rectangular antenna squareness detection device

Abstract

A rectangular antenna squareness detection device comprises a right-angle block and a pressing mechanism. A cavity is formed in the bottom face of the right-angle block, a controller and thin film pressure sensors are arranged in the cavity, one side of the controller is connected with a pair of thin film pressure sensors, and part of the outer side face of a sensing thin film of each thin film pressure sensor protrudes out of the two inner side faces of the right-angle block respectively. The pressing mechanism is arranged on one side of the right-angle block, a first pressing block is arranged at one end of an output shaft of the first linear mechanism, a first right-angle opening is formed in one face of the first pressing block, a second pressing block is arranged at one end of an output shaft of the second linear mechanism, and a second right-angle opening is formed in one face of the second pressing block. When the same inner side face of the right-angle block is parallel to the short edge of the antenna, the second right-angle opening is used for clamping one side edge of the antenna. The rectangular antenna squareness detection device is simple in structure, and squareness detection of a rectangular waveguide slot antenna is relatively convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of rectangular workpiece edge right angle detection, in particular to a rectangular antenna right angle detection device. Background Art

[0002] Waveguide slot antennas generate electromagnetic radiation by creating narrow slits in a waveguide wall at a specific pattern. Common waveguide slot antennas come in circular and rectangular shapes. Rectangular waveguide slot antennas are typically not square. This is because creating a radiating slot in a rectangular waveguide wall requires cutting off the high-frequency wall current path, redirecting the current at the slot edge. Most of this wall current is transmitted across the slot as displacement current. Non-square rectangular waveguides make it easier to control and optimize the slot's radiation characteristics.

[0003] After the waveguide slot antenna is produced and processed, it is necessary to perform a squareness test on the two intersecting surfaces at its four side edges. That is, to test whether the angle between the two side surfaces is within the allowable error range of about 90°. Because if the squareness is poor, the beam shape will change, the cross-polarization level will increase, and the antenna's anti-interference ability will be reduced. It will also affect the spacing between the waveguide slots, causing the electromagnetic waves in the working frequency band to resonate, resulting in a large amount of electromagnetic wave reflection. In extreme cases, the excitation source may be damaged.

[0004] However, there is currently no equipment specifically designed for detecting the right angle of rectangular waveguide crack antennas. If methods such as laser angle measurement are used, the equipment used is relatively complex and difficult to operate. Utility Model Content

[0005] In view of the above-mentioned defects, the present invention provides a rectangular antenna right angle detection device, which has a simple structure and is convenient for detecting the right angle of a rectangular waveguide crack antenna.

[0006] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0007] A rectangular antenna right angle detection device, comprising:

[0008] A right-angle block, wherein a cavity is formed on the bottom surface of the right-angle block, wherein a controller and a thin film pressure sensor are disposed in the cavity, and a pair of thin film pressure sensors are connected to one side of the controller, wherein a portion of the outer surface of the sensing film of each thin film pressure sensor protrudes beyond the two inner surfaces of the right-angle block;

[0009] The clamping mechanism is provided on one side of the right-angle block and includes a first linear mechanism and a second linear mechanism. A first clamping block is provided at one end of the output shaft of the first linear mechanism, and a first right-angle opening is opened on one side of the first clamping block. A second clamping block is provided at one end of the output shaft of the second linear mechanism, and a second right-angle opening is opened on one side of the second clamping block. During testing, when an inner side surface of the right-angle block is parallel to the long side of the antenna, the first right-angle opening is used to clamp one side edge of the antenna; when the same inner side surface of the right-angle block is parallel to the short side of the antenna, the second right-angle opening is used to clamp one side edge of the antenna.

[0010] Furthermore, a pair of curved grooves are provided on the bottom surface of the right-angle block, and parts of the curved grooves extend to the outside of the inner side surface of the right-angle block. The sensing film is arranged in the curved groove. A rectangular groove and a pair of straight grooves are also provided on the bottom surface of the right-angle block. The two ends of each straight groove extend to the rectangular groove and the other end of a curved groove respectively. The controller is arranged in the rectangular groove, and the lead part is arranged in the straight groove.

[0011] Furthermore, the distance between one end of the curved groove and the intersection line of the two inner side surfaces of the right-angle block is 5 mm to 15 mm.

[0012] Furthermore, a portion of the outer side surface of the sensing film of the thin film pressure sensor protrudes beyond the inner side surface of the right-angle block by a distance of 1 mm to 5 mm.

[0013] Furthermore, during testing, if the long side of the antenna moves toward one inner side of the right-angle block and the short side moves toward the other inner side of the right-angle block, the first pressing block is used to press the antenna.

[0014] Furthermore, during testing, if the short side of the antenna moves toward one inner side of the right-angle block and the long side moves toward the other inner side of the right-angle block, the second pressing block is used to press the antenna.

[0015] The beneficial effects of this technical solution are:

[0016] The rectangular antenna right angle detection device of the present application has a relatively simple structure. According to the different placement methods of the antenna, it can be stably pressed from two directions respectively. During the test, two thin film pressure sensors located on both sides of the intersection line of the two inner side surfaces of the right-angle block can be used to conveniently test whether the angle between the two side surfaces of the side edge of the rectangular waveguide crack antenna meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is an overall stereoscopic view of an embodiment of the present application.

[0018] Figure 2 The working state of the embodiment of the present application is shown in three dimensions. Figure 1 .

[0019] Figure 3 The working state of the embodiment of the present application is shown in three dimensions. Figure 2 .

[0020] Figure 4 A stereoscopic view of a controller and two thin film pressure sensors according to an embodiment of the present application is shown.

[0021] Figure 5 A partial view of a right-angle block according to an embodiment of the present application as viewed from the side and below is shown. DETAILED DESCRIPTION

[0022] The technical solution of the present application is further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 The rectangular antenna right angle detection device shown in FIG. 1 includes a right angle block 1 and a pressing mechanism 2. Figure 1 As shown, the rectangular antenna right angle detection device can be fixed on the workbench 3 by welding or other methods.

[0024] The right-angle block 1 is made of a material with relatively high hardness, such as a tungsten block, a chromium block, etc. The inner angle of the right-angle block 1 is 90° and has passed the right angle test with higher error requirements. A pair of curved grooves 11 are provided on the bottom surface of the right-angle block 1. Part of the curved groove 11 passes through the outside of the inner side of the right-angle block 1, and one end of the curved groove 11 is close to the intersection of the two inner sides of the right-angle block 1. The specific distance is 5mm~15mm. A rectangular groove 13 and a pair of straight grooves 12 are also provided on the bottom surface of the right-angle block 1. The two ends of each straight groove 12 pass through the rectangular groove 1 3 and the other end of the curved groove 11, a controller 14 is provided in the rectangular groove 13. The controller 14 includes a single-chip microcomputer and a communication module. The communication module is used to communicate with the detection computer of the detection personnel. A thin film pressure sensor is connected to one side of the controller 14. The sensing film 15 of the thin film pressure sensor is provided in the curved groove 11. Part of the outer surface of the sensing film 15 protrudes beyond the inner surface of the right-angle block 1 by a predetermined distance, specifically 1 mm to 5 mm. Several lead portions 16 of the thin film pressure sensor are provided in the straight groove 12.

[0025] The clamping mechanism 2 is provided on one side of the right-angle block 1 and includes a first linear mechanism 21 and a second linear mechanism 22. In this embodiment, both use single-axis linear cylinders. A first clamping block 23 is provided at one end of the output shaft of the first linear mechanism 21, and a first right-angle opening is opened on one side of the first clamping block 23. A second clamping block 24 is provided at one end of the output shaft of the second linear mechanism 22, and a second right-angle opening is opened on one side of the second clamping block 24. Figure 2 As shown, during the test, if the long side of the antenna 4 moves toward one inner side of the right-angle block 1 and the short side moves toward the other inner side of the right-angle block 1, the first pressing block 23 is used to press the antenna 4. When pressing, the straight line where the output axis of the first linear mechanism 21 is located intersects with the inner surface intersection line of the first right-angle opening and the two inner surface intersection lines of the right-angle block 1, as shown in FIG. Figure 3As shown, during the test, if the short side of the antenna 4 moves toward one inner side surface of the right-angle block 1 and the long side moves toward the other inner side surface of the right-angle block 1, the second pressing block 24 is used to press the antenna 4. When pressing, the straight line where the output axis of the second linear mechanism 22 is located intersects with the inner surface intersection line of the second right-angle opening and the two inner surface intersection lines of the right-angle block 1 respectively.

[0026] Working method:

[0027] Taking the workbench 3 as an example, no matter how the antenna 4 is placed, during testing, the antenna 4 is first placed so that one edge thereof is close to the intersection of the two inner side surfaces of the right-angle block 1, and then pushed and pressed by the pressing mechanism 2.

[0028] In the first case, if the angle between the two side surfaces of the measured part of the antenna 4 is exactly 90°, or the angle is within the allowable error range of about 90°, then when the antenna 4 is pressed, it can obviously press the sensing films 15 of the two thin film pressure sensors at the same time, and the signal is transmitted to the controller 14 and then sent to the tester. That is to say, only when both thin film pressure sensors receive the pressure signal, the measured part is considered to have passed the right angle detection.

[0029] Next, the angles mentioned below all refer to the angles between the two side surfaces inside the antenna 4 .

[0030] In the second case, if the angle between the two side surfaces of the measured part of the antenna 4 is acute, and the angle smaller than 90° exceeds the error range, then when one side surface of the antenna 4 presses against the sensing film 15 of a thin film pressure sensor, it is obvious that the other side surface of the antenna 4 cannot press against the sensing film 15 of another thin film pressure sensor.

[0031] In the third case, if the angle between the two side surfaces of the measured part of the antenna 4 is an obtuse angle, and the angle greater than 90° exceeds the error range, the side edge of the measured part of the antenna 4 cannot approach the intersection of the two inner side surfaces of the right-angle block 1. If the angle exceeds the error range by a small amount, then one side of the antenna 4 can still press onto the sensing film 15 of a thin film pressure sensor, but the other side cannot press onto the sensing film 15 of another thin film pressure sensor. If the angle exceeds the error range by a large amount, then both side surfaces of the antenna 4 cannot press onto the sensing film 15 of the thin film pressure sensor.

[0032] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A rectangular antenna right angle detection device, characterized in that: include: A right-angle block (1), wherein a cavity is provided on the bottom surface of the right-angle block (1), a controller (14) and a thin film pressure sensor are provided in the cavity, a pair of thin film pressure sensors are connected to one side of the controller (14), and a portion of the outer side surface of the sensing film (15) of each thin film pressure sensor protrudes beyond the two inner side surfaces of the right-angle block (1); The clamping mechanism (2) is provided on one side of the right-angle block (1), and includes a first straight-line mechanism (21) and a second straight-line mechanism (22). A first clamping block (23) is provided at one end of the output shaft of the first straight-line mechanism (21), and a first right-angle opening is provided on one side of the first clamping block (23). A second clamping block (24) is provided at one end of the output shaft of the second straight-line mechanism (22), and a second right-angle opening is provided on one side of the second clamping block (24). During testing, when an inner side surface of the right-angle block (1) is parallel to the long side of the antenna (4), the first right-angle opening is used to clamp one side edge of the antenna (4); when the same inner side surface of the right-angle block (1) is parallel to the short side of the antenna (4), the second right-angle opening is used to clamp one side edge of the antenna (4).

2. The rectangular antenna right angle detection device according to claim 1, characterized in that: A pair of curved grooves (11) are provided on the bottom surface of the right-angle block (1), and parts of the curved grooves (11) extend to the outside of the inner side surface of the right-angle block (1). The sensing film (15) is provided in the curved groove (11). A rectangular groove (13) and a pair of straight grooves (12) are also provided on the bottom surface of the right-angle block (1). Two ends of each straight groove (12) extend to the other end of the rectangular groove (13) and a curved groove (11), respectively. The controller (14) is provided in the rectangular groove (13), and the lead portion (16) is provided in the straight groove (12).

3. The rectangular antenna right angle detection device according to claim 2, characterized in that: The distance between one end of the curved groove (11) and the intersection line of the two inner side surfaces of the right-angle block (1) is 5 mm to 15 mm.

4. The rectangular antenna right angle detection device according to claim 1, characterized in that: The outer side surface of a portion of the sensing film (15) of the thin film pressure sensor protrudes beyond the inner side surface of the right-angle block (1) by a distance of 1 mm to 5 mm.

5. The rectangular antenna right angle detection device according to claim 1, characterized in that: During testing, if the long side of the antenna (4) moves toward one inner side of the right-angle block (1) and the short side moves toward the other inner side of the right-angle block (1), the first pressing block (23) is used to press the antenna (4).

6. The rectangular antenna right angle detection device according to claim 1, characterized in that: During testing, if the short side of the antenna (4) moves toward one inner side of the right-angle block (1) and the long side moves toward the other inner side of the right-angle block (1), the second pressing block (24) is used to press the antenna (4).

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