A magnetic field loop antenna support capable of high-precision rotation adjustment

Abstract

This utility model relates to the field of magnetic field loop antenna technology, specifically to a magnetic field loop antenna bracket with high-precision rotatable adjustment. This utility model provides such a magnetic field loop antenna bracket with high-precision rotatable adjustment, including a base, a support rod, a support plate, a first motor, a rotating base, a second motor, and an antenna mounting backplate. The support rod is fixedly connected to the top of the base, and the support plate is slidably connected to the upper part of the support rod. The first motor is fixedly connected to the front middle of the support plate. The output shaft of the first motor is vertically upward and connected to the rotating base. The second motor is fixedly connected to the right side of the rotating base, and the output shaft of the second motor passes to the left through the rotating base and connects to the antenna mounting backplate. This utility model drives the rotating base to rotate around a vertical axis through the output shaft of the first motor, achieving continuous azimuth angle adjustment. Combined with an acrylic scale and pointer, it enables intuitive angle reading and precise feedback.

Description

Technical Field

[0001] This utility model relates to the field of magnetic field loop antenna technology, and in particular to a magnetic field loop antenna support that can be rotated and adjusted with high precision. Background Technology

[0002] As an important near-field electromagnetic measurement device, the magnetic loop antenna is widely used in electromagnetic compatibility testing, wireless communication system debugging, radio frequency identification (RFID) performance evaluation, and scientific research and teaching. Its main function is to receive or transmit signals by sensing alternating magnetic fields in space. It has good directivity and anti-electric field interference capabilities, especially in the low and mid frequency bands. To ensure the accuracy and repeatability of measurement results, the magnetic loop antenna needs to be precisely controlled in its spatial attitude during use, including parameters such as azimuth, elevation, and installation height. Therefore, the supporting support system not only needs to provide stable support, but also needs to have multi-dimensional high-precision adjustment capabilities to adapt to complex and ever-changing test environments and refined experimental requirements.

[0003] Currently, most common antenna brackets adopt fixed structures or simple pan-tilt units, and the adjustment method is mainly manual coarse adjustment. They usually do not have precise angle indication functions and lack automated control capabilities. In practical applications, these structures generally suffer from problems such as limited rotational freedom, large adjustment hysteresis, and low positioning accuracy. They also lack an intuitive angle feedback mechanism. In addition, operators rely on visual alignment, making it difficult to achieve stable and repeatable fine adjustments, which seriously affects the testing accuracy and restricts the improvement of the system's automation level.

[0004] Therefore, it is necessary to design a magnetic loop antenna support that can be rotated and adjusted with high precision to solve the above-mentioned technical problems. Utility Model Content

[0005] To overcome the shortcomings of existing antenna supports, which are mostly fixed or simple structures, require manual coarse adjustment, lack precise indication and automatic control, have inaccurate positioning and lack feedback, rely on visual alignment, are difficult to fine-tune, and affect testing accuracy and automation level, this utility model provides a magnetic field loop antenna support that can be rotated and adjusted with high precision.

[0006] The technical implementation scheme of this utility model is as follows: a magnetic field loop antenna bracket with high-precision rotational adjustment, including a base, a support rod, a support plate, a first motor, a rotating base, a second motor, an antenna mounting back plate, a scale, and a pointer. The support rod is fixedly connected to the top of the base, and the support plate is slidably connected to the upper part of the support rod. The first motor is fixedly connected to the front middle part of the support plate. The output shaft of the first motor is vertically connected to the rotating base. The second motor is fixedly connected to the right side of the rotating base. The output shaft of the second motor passes through the rotating base to the left and is connected to the antenna mounting back plate. A scale is installed on the left side of the rotating base. The left end of the output shaft of the second motor also passes through the rotating base and is connected to the pointer. The pointer rotates and contacts the surface of the scale.

[0007] Furthermore, it also includes a fixing rod, a drill bit, and a support rod. The fixing rod is installed at the bottom of the base, the drill bit is located at the bottom of the fixing rod, and multiple downward-sloping support rods are evenly distributed along the circumference of the upper part of the fixing rod.

[0008] Furthermore, it also includes foot pads, with each support rod having a foot pad at its bottom.

[0009] Furthermore, it also includes a third motor and a screw. The third motor is fixedly connected to the rear side of the top of the support rod, and the output shaft of the third motor is vertically connected to the screw. The rear part of the support plate is threadedly connected to the screw.

[0010] Furthermore, it also includes a buzzer and a control module. The buzzer is installed on the left side of the top rear part of the support plate, and the control module is installed on the right side of the top rear part of the support plate. The control module is electrically connected to the first motor, the second motor, the third motor and the buzzer respectively.

[0011] Furthermore, the dial is made of acrylic glass with high-contrast angle markings engraved on its surface.

[0012] The present invention has the following advantages: 1. The present invention drives the rotating base to rotate around the vertical axis by the output shaft of the first motor, so as to achieve the effect of continuous adjustment of the azimuth angle. Combined with the acrylic scale and pointer, the angle can be read intuitively and accurately.

[0013] 2. This utility model drives the antenna mounting backplate to rotate around the horizontal axis by the output shaft of the second motor, achieving the effect of precise adjustment of the elevation angle. This allows the magnetic field loop antenna to flexibly adjust its attitude in three-dimensional space, adapting to the test requirements of different polarization directions and signal receiving angles, ensuring the stability of the antenna during the adjustment process, and reducing external vibration interference.

[0014] 3. This utility model uses a third motor to drive the screw to rotate, which in turn causes the support plate to move up and down along the support rod in a straight line, achieving an adjustable height. This meets the adaptability requirements of different testing scenarios for antenna installation height and improves the versatility and operational flexibility of the equipment.

[0015] 4. This utility model achieves stable support under different ground conditions through the cooperation of a fixed rod, a drill bit, and circumferentially distributed support rods and foot pads. Whether it is inserted and fixed on soft ground or relies on multi-point support for anti-slip on hard ground, it effectively improves the device's anti-overturning ability and operational stability, and solves the problem that traditional supports are prone to displacement or tilting in complex environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the rear structure.

[0018] Figure 3 This is a structural schematic diagram of the support plate, the first motor, and the rotating base of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the second motor, buzzer, and control module of this utility model.

[0020] In the above attached diagram: 1: base, 2: support rod, 3: support plate, 4: first motor, 5: rotating base, 6: second motor, 7: antenna mounting backplate, 8: dial, 9: pointer, 10: fixing rod, 11: drill bit, 12: support rod, 13: foot pad, 14: third motor, 15: screw, 16: buzzer, 17: control module. Detailed Implementation

[0021] Example: A magnetic field loop antenna support that can be rotated and adjusted with high precision, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a base 1, a support rod 2, a support plate 3, a first motor 4, a rotating base 5, a second motor 6, an antenna mounting backplate 7, a dial 8, and a pointer 9. The support rod 2 is bolted to the top of the base 1. The support plate 3 is slidably connected to the upper part of the support rod 2. The first motor 4 is bolted to the front middle of the support plate 3. The output shaft of the first motor 4 is vertically connected to the rotating base 5. The second motor 6 is bolted to the right side of the rotating base 5. The output shaft of the second motor 6 passes to the left through the rotating base 5 and is connected to the antenna mounting backplate 7. The dial 8 is mounted on the left side of the rotating base 5. The left end of the output shaft of the second motor 6 also passes through the rotating base 5 and is connected to the pointer 9. The pointer 9 rotates and contacts the surface of the dial 8. The dial 8 is made of plexiglass and has high-contrast angle markings engraved on its surface.

[0022] like Figure 1 and Figure 2As shown, it also includes a fixing rod 10, a drill bit 11, a support rod 12 and a foot pad 13. The fixing rod 10 is installed at the bottom of the base 1. The drill bit 11 is provided at the bottom of the fixing rod 10. Multiple downward-sloping support rods 12 are evenly arranged along the circumference of the upper part of the fixing rod 10. Each support rod 12 is provided with a foot pad 13 at its bottom.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, it also includes a third motor 14 and a screw 15. The third motor 14 is bolted to the rear top of the support rod 2. The output shaft of the third motor 14 is vertically connected to the screw 15. The rear part of the support plate 3 is threadedly connected to the screw 15.

[0024] like Figure 4 As shown, it also includes a buzzer 16 and a control module 17. The buzzer 16 is installed on the left side of the top rear part of the support plate 3, and the control module 17 is installed on the right side of the top rear part of the support plate 3. The control module 17 is electrically connected to the first motor 4, the second motor 6, the third motor 14 and the buzzer 16 respectively.

[0025] When this device is needed, first, place the base 1 stably on the test site. The bracket can be inserted into the soft ground by means of the fixing rod 10 installed at the bottom of the base 1 and the drill bit 11 at the bottom, so as to achieve quick fixation and prevent displacement during the test. When used on a hard surface, the support rod 12 and the foot pad 13 together form a stable triangular support structure, which effectively distributes the load and improves the overall device's anti-overturning ability and operational stability.

[0026] Next, the third motor 14 is started, and the screw 15 connected vertically downward to its output shaft rotates accordingly. Since the rear of the support plate 3 is threadedly connected to the screw 15, the support plate 3 moves up and down in a straight line along the support rod 2 under the drive of the screw 15, thereby achieving height adjustment. This process is precisely controlled by the control module 17 to start, stop and speed of the third motor 14, ensuring that the support plate 3 is accurately positioned and meets the requirements for antenna installation height under different test scenarios.

[0027] Once the support plate 3 is adjusted to the appropriate height, the first motor 4 is started. Its output shaft moves vertically upward to drive the rotating base 5 to rotate horizontally, thereby achieving continuous adjustment of the azimuth angle. A scale 8 made of plexiglass is installed on the left side of the rotating base 5. The surface is engraved with high-contrast angle markings for easy reading. The pointer 9 rotates synchronously with the rotating base 5, indicating the current azimuth angle on the surface of the scale 8, thus achieving intuitive and accurate angle feedback. The control module 17 controls the rotation angle and speed of the first motor 4 according to a preset program or external command to ensure the repeatability and consistency of the azimuth adjustment.

[0028] After the azimuth angle is adjusted to the correct position, the second motor 6 is started. Its output axis passes through the rotating base 5 to the left and connects to the antenna mounting backplate 7, driving the antenna mounting backplate 7 to rotate around the horizontal axis, thereby achieving precise adjustment of the elevation angle. This structure allows the magnetic loop antenna to flexibly adjust its attitude in three-dimensional space to adapt to the test requirements of different polarization directions and signal receiving angles. The antenna is mounted on the antenna mounting backplate 7 to ensure that it remains stable during the adjustment process and is not affected by mechanical vibration.

[0029] Throughout the adjustment process, the control module 17 monitors the operating status of the first motor 4, the second motor 6, and the third motor 14 in real time. When the adjustment is completed or an abnormality occurs, the buzzer 16 will sound a prompt to remind the operator to confirm or intervene in time. The control module 17 is electrically connected to each motor and the buzzer 16 to form a complete closed-loop control system, which improves the automation level and operational safety of the device.

Claims

1. A magnetic loop antenna support that can be adjusted in rotation with high precision, characterized in that: It includes a base (1), a support rod (2), a support plate (3), a first motor (4), a rotating base (5), a second motor (6), an antenna mounting backplate (7), a dial (8), and a pointer (9). The top of the base (1) is fixedly connected to the support rod (2), and the upper part of the support rod (2) is slidably connected to the support plate (3). The front middle part of the support plate (3) is fixedly connected to the first motor (4). The output shaft of the first motor (4) is vertically connected to the rotating base (5). The right side of the rotating base (5) is fixedly connected to the second motor (6). The output shaft of the second motor (6) passes through the rotating base (5) to the left and is connected to the antenna mounting backplate (7). The left side of the rotating base (5) is mounted on the dial (8). The left end of the output shaft of the second motor (6) also passes through the rotating base (5) and is connected to the pointer (9). The pointer (9) rotates and contacts the surface of the dial (8).

2. A high precision rotationally adjustable magnetic loop antenna support according to claim 1, characterized in that: It also includes a fixing rod (10), a drill bit (11) and a support rod (12). The fixing rod (10) is installed at the bottom of the base (1), the drill bit (11) is provided at the bottom of the fixing rod (10), and multiple downward-sloping support rods (12) are evenly provided on the upper part of the fixing rod (10) along the circumference.

3. A high precision rotationally adjustable magnetic loop antenna support according to claim 2, characterized in that: It also includes foot pads (13), with each support rod (12) having a foot pad (13) at its bottom.

4. A high precision rotationally adjustable magnetic loop antenna support according to claim 3, characterized in that: It also includes a third motor (14) and a screw (15). The third motor (14) is fixedly connected to the rear side of the top of the support rod (2). The output shaft of the third motor (14) is vertically connected to the screw (15). The rear part of the support plate (3) is threadedly connected to the screw (15).

5. A high precision rotationally adjustable magnetic loop antenna support according to claim 4, characterized in that: It also includes a buzzer (16) and a control module (17). The buzzer (16) is installed on the left side of the top rear part of the support plate (3), and the control module (17) is installed on the right side of the top rear part of the support plate (3). The control module (17) is electrically connected to the first motor (4), the second motor (6), the third motor (14) and the buzzer (16) respectively.

6. A high precision rotationally adjustable magnetic loop antenna support according to claim 5, characterized in that: The dial (8) is made of acrylic glass and has high-contrast angle markings on its surface.

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